/**
* plotly.js (gl2d) v1.31.2
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
* Licensed under the MIT license
*/
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Plotly = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';

var Lib = require('../src/lib');
var rules = {
    "X,X div": "font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;",
    "X input,X button": "font-family:'Open Sans', verdana, arial, sans-serif;",
    "X input:focus,X button:focus": "outline:none;",
    "X a": "text-decoration:none;",
    "X a:hover": "text-decoration:none;",
    "X .crisp": "shape-rendering:crispEdges;",
    "X .user-select-none": "-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;-o-user-select:none;user-select:none;",
    "X svg": "overflow:hidden;",
    "X svg a": "fill:#447adb;",
    "X svg a:hover": "fill:#3c6dc5;",
    "X .main-svg": "position:absolute;top:0;left:0;pointer-events:none;",
    "X .main-svg .draglayer": "pointer-events:all;",
    "X .cursor-default": "cursor:default;",
    "X .cursor-pointer": "cursor:pointer;",
    "X .cursor-crosshair": "cursor:crosshair;",
    "X .cursor-move": "cursor:move;",
    "X .cursor-col-resize": "cursor:col-resize;",
    "X .cursor-row-resize": "cursor:row-resize;",
    "X .cursor-ns-resize": "cursor:ns-resize;",
    "X .cursor-ew-resize": "cursor:ew-resize;",
    "X .cursor-sw-resize": "cursor:sw-resize;",
    "X .cursor-s-resize": "cursor:s-resize;",
    "X .cursor-se-resize": "cursor:se-resize;",
    "X .cursor-w-resize": "cursor:w-resize;",
    "X .cursor-e-resize": "cursor:e-resize;",
    "X .cursor-nw-resize": "cursor:nw-resize;",
    "X .cursor-n-resize": "cursor:n-resize;",
    "X .cursor-ne-resize": "cursor:ne-resize;",
    "X .modebar": "position:absolute;top:2px;right:2px;z-index:1001;background:rgba(255,255,255,0.7);",
    "X .modebar--hover": "opacity:0;-webkit-transition:opacity 0.3s ease 0s;-moz-transition:opacity 0.3s ease 0s;-ms-transition:opacity 0.3s ease 0s;-o-transition:opacity 0.3s ease 0s;transition:opacity 0.3s ease 0s;",
    "X:hover .modebar--hover": "opacity:1;",
    "X .modebar-group": "float:left;display:inline-block;box-sizing:border-box;margin-left:8px;position:relative;vertical-align:middle;white-space:nowrap;",
    "X .modebar-group:first-child": "margin-left:0px;",
    "X .modebar-btn": "position:relative;font-size:16px;padding:3px 4px;cursor:pointer;line-height:normal;box-sizing:border-box;",
    "X .modebar-btn svg": "position:relative;top:2px;",
    "X .modebar-btn path": "fill:rgba(0,31,95,0.3);",
    "X .modebar-btn.active path,X .modebar-btn:hover path": "fill:rgba(0,22,72,0.5);",
    "X .modebar-btn.modebar-btn--logo": "padding:3px 1px;",
    "X .modebar-btn.modebar-btn--logo path": "fill:#447adb !important;",
    "X [data-title]:before,X [data-title]:after": "position:absolute;-webkit-transform:translate3d(0, 0, 0);-moz-transform:translate3d(0, 0, 0);-ms-transform:translate3d(0, 0, 0);-o-transform:translate3d(0, 0, 0);transform:translate3d(0, 0, 0);display:none;opacity:0;z-index:1001;pointer-events:none;top:110%;right:50%;",
    "X [data-title]:hover:before,X [data-title]:hover:after": "display:block;opacity:1;",
    "X [data-title]:before": "content:'';position:absolute;background:transparent;border:6px solid transparent;z-index:1002;margin-top:-12px;border-bottom-color:#69738a;margin-right:-6px;",
    "X [data-title]:after": "content:attr(data-title);background:#69738a;color:white;padding:8px 10px;font-size:12px;line-height:12px;white-space:nowrap;margin-right:-18px;border-radius:2px;",
    "X .select-outline": "fill:none;stroke-width:1;shape-rendering:crispEdges;",
    "X .select-outline-1": "stroke:white;",
    "X .select-outline-2": "stroke:black;stroke-dasharray:2px 2px;",
    Y: "font-family:'Open Sans';position:fixed;top:50px;right:20px;z-index:10000;font-size:10pt;max-width:180px;",
    "Y p": "margin:0;",
    "Y .notifier-note": "min-width:180px;max-width:250px;border:1px solid #fff;z-index:3000;margin:0;background-color:#8c97af;background-color:rgba(140,151,175,0.9);color:#fff;padding:10px;",
    "Y .notifier-close": "color:#fff;opacity:0.8;float:right;padding:0 5px;background:none;border:none;font-size:20px;font-weight:bold;line-height:20px;",
    "Y .notifier-close:hover": "color:#444;text-decoration:none;cursor:pointer;"
};

for(var selector in rules) {
    var fullSelector = selector.replace(/^,/,' ,')
        .replace(/X/g, '.js-plotly-plot .plotly')
        .replace(/Y/g, '.plotly-notifier');
    Lib.addStyleRule(fullSelector, rules[selector]);
}

},{"../src/lib":353}],2:[function(require,module,exports){
'use strict';

module.exports = {
    'undo': {
        'width': 857.1,
        'path': 'm857 350q0-87-34-166t-91-137-137-92-166-34q-96 0-183 41t-147 114q-4 6-4 13t5 11l76 77q6 5 14 5 9-1 13-7 41-53 100-82t126-29q58 0 110 23t92 61 61 91 22 111-22 111-61 91-92 61-110 23q-55 0-105-20t-90-57l77-77q17-16 8-38-10-23-33-23h-250q-15 0-25 11t-11 25v250q0 24 22 33 22 10 39-8l72-72q60 57 137 88t159 31q87 0 166-34t137-92 91-137 34-166z',
        'ascent': 850,
        'descent': -150
    },
    'home': {
        'width': 928.6,
        'path': 'm786 296v-267q0-15-11-26t-25-10h-214v214h-143v-214h-214q-15 0-25 10t-11 26v267q0 1 0 2t0 2l321 264 321-264q1-1 1-4z m124 39l-34-41q-5-5-12-6h-2q-7 0-12 3l-386 322-386-322q-7-4-13-4-7 2-12 7l-35 41q-4 5-3 13t6 12l401 334q18 15 42 15t43-15l136-114v109q0 8 5 13t13 5h107q8 0 13-5t5-13v-227l122-102q5-5 6-12t-4-13z',
        'ascent': 850,
        'descent': -150
    },
    'camera-retro': {
        'width': 1000,
        'path': 'm518 386q0 8-5 13t-13 5q-37 0-63-27t-26-63q0-8 5-13t13-5 12 5 5 13q0 23 16 38t38 16q8 0 13 5t5 13z m125-73q0-59-42-101t-101-42-101 42-42 101 42 101 101 42 101-42 42-101z m-572-320h858v71h-858v-71z m643 320q0 89-62 152t-152 62-151-62-63-152 63-151 151-63 152 63 62 151z m-571 358h214v72h-214v-72z m-72-107h858v143h-462l-36-71h-360v-72z m929 143v-714q0-30-21-51t-50-21h-858q-29 0-50 21t-21 51v714q0 30 21 51t50 21h858q29 0 50-21t21-51z',
        'ascent': 850,
        'descent': -150
    },
    'zoombox': {
        'width': 1000,
        'path': 'm1000-25l-250 251c40 63 63 138 63 218 0 224-182 406-407 406-224 0-406-182-406-406s183-406 407-406c80 0 155 22 218 62l250-250 125 125z m-812 250l0 438 437 0 0-438-437 0z m62 375l313 0 0-312-313 0 0 312z',
        'ascent': 850,
        'descent': -150
    },
    'pan': {
        'width': 1000,
        'path': 'm1000 350l-187 188 0-125-250 0 0 250 125 0-188 187-187-187 125 0 0-250-250 0 0 125-188-188 186-187 0 125 252 0 0-250-125 0 187-188 188 188-125 0 0 250 250 0 0-126 187 188z',
        'ascent': 850,
        'descent': -150
    },
    'zoom_plus': {
        'width': 1000,
        'path': 'm1 787l0-875 875 0 0 875-875 0z m687-500l-187 0 0-187-125 0 0 187-188 0 0 125 188 0 0 187 125 0 0-187 187 0 0-125z',
        'ascent': 850,
        'descent': -150
    },
    'zoom_minus': {
        'width': 1000,
        'path': 'm0 788l0-876 875 0 0 876-875 0z m688-500l-500 0 0 125 500 0 0-125z',
        'ascent': 850,
        'descent': -150
    },
    'autoscale': {
        'width': 1000,
        'path': 'm250 850l-187 0-63 0 0-62 0-188 63 0 0 188 187 0 0 62z m688 0l-188 0 0-62 188 0 0-188 62 0 0 188 0 62-62 0z m-875-938l0 188-63 0 0-188 0-62 63 0 187 0 0 62-187 0z m875 188l0-188-188 0 0-62 188 0 62 0 0 62 0 188-62 0z m-125 188l-1 0-93-94-156 156 156 156 92-93 2 0 0 250-250 0 0-2 93-92-156-156-156 156 94 92 0 2-250 0 0-250 0 0 93 93 157-156-157-156-93 94 0 0 0-250 250 0 0 0-94 93 156 157 156-157-93-93 0 0 250 0 0 250z',
        'ascent': 850,
        'descent': -150
    },
    'tooltip_basic': {
        'width': 1500,
        'path': 'm375 725l0 0-375-375 375-374 0-1 1125 0 0 750-1125 0z',
        'ascent': 850,
        'descent': -150
    },
    'tooltip_compare': {
        'width': 1125,
        'path': 'm187 786l0 2-187-188 188-187 0 0 937 0 0 373-938 0z m0-499l0 1-187-188 188-188 0 0 937 0 0 376-938-1z',
        'ascent': 850,
        'descent': -150
    },
    'plotlylogo': {
        'width': 1542,
        'path': 'm0-10h182v-140h-182v140z m228 146h183v-286h-183v286z m225 714h182v-1000h-182v1000z m225-285h182v-715h-182v715z m225 142h183v-857h-183v857z m231-428h182v-429h-182v429z m225-291h183v-138h-183v138z',
        'ascent': 850,
        'descent': -150
    },
    'z-axis': {
        'width': 1000,
        'path': 'm833 5l-17 108v41l-130-65 130-66c0 0 0 38 0 39 0-1 36-14 39-25 4-15-6-22-16-30-15-12-39-16-56-20-90-22-187-23-279-23-261 0-341 34-353 59 3 60 228 110 228 110-140-8-351-35-351-116 0-120 293-142 474-142 155 0 477 22 477 142 0 50-74 79-163 96z m-374 94c-58-5-99-21-99-40 0-24 65-43 144-43 79 0 143 19 143 43 0 19-42 34-98 40v216h87l-132 135-133-135h88v-216z m167 515h-136v1c16 16 31 34 46 52l84 109v54h-230v-71h124v-1c-16-17-28-32-44-51l-89-114v-51h245v72z',
        'ascent': 850,
        'descent': -150
    },
    '3d_rotate': {
        'width': 1000,
        'path': 'm922 660c-5 4-9 7-14 11-359 263-580-31-580-31l-102 28 58-400c0 1 1 1 2 2 118 108 351 249 351 249s-62 27-100 42c88 83 222 183 347 122 16-8 30-17 44-27-2 1-4 2-6 4z m36-329c0 0 64 229-88 296-62 27-124 14-175-11 157-78 225-208 249-266 8-19 11-31 11-31 2 5 6 15 11 32-5-13-8-20-8-20z m-775-239c70-31 117-50 198-32-121 80-199 346-199 346l-96-15-58-12c0 0 55-226 155-287z m603 133l-317-139c0 0 4-4 19-14 7-5 24-15 24-15s-177-147-389 4c235-287 536-112 536-112l31-22 100 299-4-1z m-298-153c6-4 14-9 24-15 0 0-17 10-24 15z',
        'ascent': 850,
        'descent': -150
    },
    'camera': {
        'width': 1000,
        'path': 'm500 450c-83 0-150-67-150-150 0-83 67-150 150-150 83 0 150 67 150 150 0 83-67 150-150 150z m400 150h-120c-16 0-34 13-39 29l-31 93c-6 15-23 28-40 28h-340c-16 0-34-13-39-28l-31-94c-6-15-23-28-40-28h-120c-55 0-100-45-100-100v-450c0-55 45-100 100-100h800c55 0 100 45 100 100v450c0 55-45 100-100 100z m-400-550c-138 0-250 112-250 250 0 138 112 250 250 250 138 0 250-112 250-250 0-138-112-250-250-250z m365 380c-19 0-35 16-35 35 0 19 16 35 35 35 19 0 35-16 35-35 0-19-16-35-35-35z',
        'ascent': 850,
        'descent': -150
    },
    'movie': {
        'width': 1000,
        'path': 'm938 413l-188-125c0 37-17 71-44 94 64 38 107 107 107 187 0 121-98 219-219 219-121 0-219-98-219-219 0-61 25-117 66-156h-115c30 33 49 76 49 125 0 103-84 187-187 187s-188-84-188-187c0-57 26-107 65-141-38-22-65-62-65-109v-250c0-70 56-126 125-126h500c69 0 125 56 125 126l188-126c34 0 62 28 62 63v375c0 35-28 63-62 63z m-750 0c-69 0-125 56-125 125s56 125 125 125 125-56 125-125-56-125-125-125z m406-1c-87 0-157 70-157 157 0 86 70 156 157 156s156-70 156-156-70-157-156-157z',
        'ascent': 850,
        'descent': -150
    },
    'question': {
        'width': 857.1,
        'path': 'm500 82v107q0 8-5 13t-13 5h-107q-8 0-13-5t-5-13v-107q0-8 5-13t13-5h107q8 0 13 5t5 13z m143 375q0 49-31 91t-77 65-95 23q-136 0-207-119-9-14 4-24l74-55q4-4 10-4 9 0 14 7 30 38 48 51 19 14 48 14 27 0 48-15t21-33q0-21-11-34t-38-25q-35-16-65-48t-29-70v-20q0-8 5-13t13-5h107q8 0 13 5t5 13q0 10 12 27t30 28q18 10 28 16t25 19 25 27 16 34 7 45z m214-107q0-117-57-215t-156-156-215-58-216 58-155 156-58 215 58 215 155 156 216 58 215-58 156-156 57-215z',
        'ascent': 850,
        'descent': -150
    },
    'disk': {
        'width': 857.1,
        'path': 'm214-7h429v214h-429v-214z m500 0h72v500q0 8-6 21t-11 20l-157 156q-5 6-19 12t-22 5v-232q0-22-15-38t-38-16h-322q-22 0-37 16t-16 38v232h-72v-714h72v232q0 22 16 38t37 16h465q22 0 38-16t15-38v-232z m-214 518v178q0 8-5 13t-13 5h-107q-7 0-13-5t-5-13v-178q0-8 5-13t13-5h107q7 0 13 5t5 13z m357-18v-518q0-22-15-38t-38-16h-750q-23 0-38 16t-16 38v750q0 22 16 38t38 16h517q23 0 50-12t42-26l156-157q16-15 27-42t11-49z',
        'ascent': 850,
        'descent': -150
    },
    'lasso': {
        'width': 1031,
        'path': 'm1018 538c-36 207-290 336-568 286-277-48-473-256-436-463 10-57 36-108 76-151-13-66 11-137 68-183 34-28 75-41 114-42l-55-70 0 0c-2-1-3-2-4-3-10-14-8-34 5-45 14-11 34-8 45 4 1 1 2 3 2 5l0 0 113 140c16 11 31 24 45 40 4 3 6 7 8 11 48-3 100 0 151 9 278 48 473 255 436 462z m-624-379c-80 14-149 48-197 96 42 42 109 47 156 9 33-26 47-66 41-105z m-187-74c-19 16-33 37-39 60 50-32 109-55 174-68-42-25-95-24-135 8z m360 75c-34-7-69-9-102-8 8 62-16 128-68 170-73 59-175 54-244-5-9 20-16 40-20 61-28 159 121 317 333 354s407-60 434-217c28-159-121-318-333-355z',
        'ascent': 850,
        'descent': -150
    },
    'selectbox': {
        'width': 1000,
        'path': 'm0 850l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z m285 0l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z m-857-286l0-143 143 0 0 143-143 0z m857 0l0-143 143 0 0 143-143 0z m-857-285l0-143 143 0 0 143-143 0z m857 0l0-143 143 0 0 143-143 0z m-857-286l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z m285 0l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z',
        'ascent': 850,
        'descent': -150
    },
    'spikeline': {
        'width': 1000,
        'path': 'M512 409c0-57-46-104-103-104-57 0-104 47-104 104 0 57 47 103 104 103 57 0 103-46 103-103z m-327-39l92 0 0 92-92 0z m-185 0l92 0 0 92-92 0z m370-186l92 0 0 93-92 0z m0-184l92 0 0 92-92 0z',
        'ascent': 850,
        'descent': -150
    }
};

},{}],3:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/contourgl');

},{"../src/traces/contourgl":454}],4:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/core');

},{"../src/core":337}],5:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/heatmapgl');

},{"../src/traces/heatmapgl":469}],6:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Plotly = require('./core');

Plotly.register([
    require('./scattergl'),
    require('./pointcloud'),
    require('./heatmapgl'),
    require('./contourgl'),
    require('./parcoords')
]);

module.exports = Plotly;

},{"./contourgl":3,"./core":4,"./heatmapgl":5,"./parcoords":7,"./pointcloud":8,"./scattergl":9}],7:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/parcoords');

},{"../src/traces/parcoords":481}],8:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/pointcloud');

},{"../src/traces/pointcloud":489}],9:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/scattergl');

},{"../src/traces/scattergl":520}],10:[function(require,module,exports){
var padLeft = require('pad-left')

module.exports = addLineNumbers
function addLineNumbers (string, start, delim) {
  start = typeof start === 'number' ? start : 1
  delim = delim || ': '

  var lines = string.split(/\r?\n/)
  var totalDigits = String(lines.length + start - 1).length
  return lines.map(function (line, i) {
    var c = i + start
    var digits = String(c).length
    var prefix = padLeft(c, totalDigits - digits)
    return prefix + delim + line
  }).join('\n')
}

},{"pad-left":166}],11:[function(require,module,exports){
'use strict'

module.exports = normalize;

function normalize (arr, dim) {
	if (!arr || arr.length == null) throw Error('Argument should be an array')

	if (dim == null) dim = 1
	else dim = Math.floor(dim)

	var bounds = Array(dim * 2)

	for (var offset = 0; offset < dim; offset++) {
		var max = -Infinity, min = Infinity, i = offset, l = arr.length;

		for (; i < l; i+=dim) {
			if (arr[i] > max) max = arr[i];
			if (arr[i] < min) min = arr[i];
		}

		bounds[offset] = min
		bounds[dim + offset] = max
	}

	return bounds;
}

},{}],12:[function(require,module,exports){
'use strict'

var getBounds = require('array-bounds')

module.exports = normalize;

function normalize (arr, dim, bounds) {
	if (!arr || arr.length == null) throw Error('Argument should be an array')

	if (dim == null) dim = 1
	if (bounds == null) bounds = getBounds(arr, dim)

	for (var offset = 0; offset < dim; offset++) {
		var max = bounds[dim + offset], min = bounds[offset], i = offset, l = arr.length;

		if (max === Infinity && min === -Infinity) {
			for (i = offset; i < l; i+=dim) {
				arr[i] = arr[i] === max ? 1 : arr[i] === min ? 0 : .5
			}
		}
		else if (max === Infinity) {
			for (i = offset; i < l; i+=dim) {
				arr[i] = arr[i] === max ? 1 : 0
			}
		}
		else if (min === -Infinity) {
			for (i = offset; i < l; i+=dim) {
				arr[i] = arr[i] === min ? 0 : 1
			}
		}
		else {
			var range = max - min
			for (i = offset; i < l; i+=dim) {
				arr[i] = (arr[i] - min) / range
			}
		}
	}

	return arr;
}

},{"array-bounds":11}],13:[function(require,module,exports){
module.exports = function _atob(str) {
  return atob(str)
}

},{}],14:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = add

function add(a, b) {
  return rationalize(
    a[0].mul(b[1]).add(b[0].mul(a[1])),
    a[1].mul(b[1]))
}

},{"./lib/rationalize":24}],15:[function(require,module,exports){
'use strict'

module.exports = cmp

function cmp(a, b) {
    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
}

},{}],16:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = div

function div(a, b) {
  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
}

},{"./lib/rationalize":24}],17:[function(require,module,exports){
'use strict'

var isRat = require('./is-rat')
var isBN = require('./lib/is-bn')
var num2bn = require('./lib/num-to-bn')
var str2bn = require('./lib/str-to-bn')
var rationalize = require('./lib/rationalize')
var div = require('./div')

module.exports = makeRational

function makeRational(numer, denom) {
  if(isRat(numer)) {
    if(denom) {
      return div(numer, makeRational(denom))
    }
    return [numer[0].clone(), numer[1].clone()]
  }
  var shift = 0
  var a, b
  if(isBN(numer)) {
    a = numer.clone()
  } else if(typeof numer === 'string') {
    a = str2bn(numer)
  } else if(numer === 0) {
    return [num2bn(0), num2bn(1)]
  } else if(numer === Math.floor(numer)) {
    a = num2bn(numer)
  } else {
    while(numer !== Math.floor(numer)) {
      numer = numer * Math.pow(2, 256)
      shift -= 256
    }
    a = num2bn(numer)
  }
  if(isRat(denom)) {
    a.mul(denom[1])
    b = denom[0].clone()
  } else if(isBN(denom)) {
    b = denom.clone()
  } else if(typeof denom === 'string') {
    b = str2bn(denom)
  } else if(!denom) {
    b = num2bn(1)
  } else if(denom === Math.floor(denom)) {
    b = num2bn(denom)
  } else {
    while(denom !== Math.floor(denom)) {
      denom = denom * Math.pow(2, 256)
      shift += 256
    }
    b = num2bn(denom)
  }
  if(shift > 0) {
    a = a.ushln(shift)
  } else if(shift < 0) {
    b = b.ushln(-shift)
  }
  return rationalize(a, b)
}

},{"./div":16,"./is-rat":18,"./lib/is-bn":22,"./lib/num-to-bn":23,"./lib/rationalize":24,"./lib/str-to-bn":25}],18:[function(require,module,exports){
'use strict'

var isBN = require('./lib/is-bn')

module.exports = isRat

function isRat(x) {
  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
}

},{"./lib/is-bn":22}],19:[function(require,module,exports){
'use strict'

var BN = require('bn.js')

module.exports = sign

function sign (x) {
  return x.cmp(new BN(0))
}

},{"bn.js":32}],20:[function(require,module,exports){
'use strict'

var sign = require('./bn-sign')

module.exports = bn2num

//TODO: Make this better
function bn2num(b) {
  var l = b.length
  var words = b.words
  var out = 0
  if (l === 1) {
    out = words[0]
  } else if (l === 2) {
    out = words[0] + (words[1] * 0x4000000)
  } else {
    for (var i = 0; i < l; i++) {
      var w = words[i]
      out += w * Math.pow(0x4000000, i)
    }
  }
  return sign(b) * out
}

},{"./bn-sign":19}],21:[function(require,module,exports){
'use strict'

var db = require('double-bits')
var ctz = require('bit-twiddle').countTrailingZeros

module.exports = ctzNumber

//Counts the number of trailing zeros
function ctzNumber(x) {
  var l = ctz(db.lo(x))
  if(l < 32) {
    return l
  }
  var h = ctz(db.hi(x))
  if(h > 20) {
    return 52
  }
  return h + 32
}

},{"bit-twiddle":31,"double-bits":63}],22:[function(require,module,exports){
'use strict'

var BN = require('bn.js')

module.exports = isBN

//Test if x is a bignumber
//FIXME: obviously this is the wrong way to do it
function isBN(x) {
  return x && typeof x === 'object' && Boolean(x.words)
}

},{"bn.js":32}],23:[function(require,module,exports){
'use strict'

var BN = require('bn.js')
var db = require('double-bits')

module.exports = num2bn

function num2bn(x) {
  var e = db.exponent(x)
  if(e < 52) {
    return new BN(x)
  } else {
    return (new BN(x * Math.pow(2, 52-e))).ushln(e-52)
  }
}

},{"bn.js":32,"double-bits":63}],24:[function(require,module,exports){
'use strict'

var num2bn = require('./num-to-bn')
var sign = require('./bn-sign')

module.exports = rationalize

function rationalize(numer, denom) {
  var snumer = sign(numer)
  var sdenom = sign(denom)
  if(snumer === 0) {
    return [num2bn(0), num2bn(1)]
  }
  if(sdenom === 0) {
    return [num2bn(0), num2bn(0)]
  }
  if(sdenom < 0) {
    numer = numer.neg()
    denom = denom.neg()
  }
  var d = numer.gcd(denom)
  if(d.cmpn(1)) {
    return [ numer.div(d), denom.div(d) ]
  }
  return [ numer, denom ]
}

},{"./bn-sign":19,"./num-to-bn":23}],25:[function(require,module,exports){
'use strict'

var BN = require('bn.js')

module.exports = str2BN

function str2BN(x) {
  return new BN(x)
}

},{"bn.js":32}],26:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = mul

function mul(a, b) {
  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
}

},{"./lib/rationalize":24}],27:[function(require,module,exports){
'use strict'

var bnsign = require('./lib/bn-sign')

module.exports = sign

function sign(x) {
  return bnsign(x[0]) * bnsign(x[1])
}

},{"./lib/bn-sign":19}],28:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = sub

function sub(a, b) {
  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
}

},{"./lib/rationalize":24}],29:[function(require,module,exports){
'use strict'

var bn2num = require('./lib/bn-to-num')
var ctz = require('./lib/ctz')

module.exports = roundRat

// Round a rational to the closest float
function roundRat (f) {
  var a = f[0]
  var b = f[1]
  if (a.cmpn(0) === 0) {
    return 0
  }
  var h = a.abs().divmod(b.abs())
  var iv = h.div
  var x = bn2num(iv)
  var ir = h.mod
  var sgn = (a.negative !== b.negative) ? -1 : 1
  if (ir.cmpn(0) === 0) {
    return sgn * x
  }
  if (x) {
    var s = ctz(x) + 4
    var y = bn2num(ir.ushln(s).divRound(b))
    return sgn * (x + y * Math.pow(2, -s))
  } else {
    var ybits = b.bitLength() - ir.bitLength() + 53
    var y = bn2num(ir.ushln(ybits).divRound(b))
    if (ybits < 1023) {
      return sgn * y * Math.pow(2, -ybits)
    }
    y *= Math.pow(2, -1023)
    return sgn * y * Math.pow(2, 1023 - ybits)
  }
}

},{"./lib/bn-to-num":20,"./lib/ctz":21}],30:[function(require,module,exports){
"use strict"

function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
  var code = [
    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
";while(l<=h){\
var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
  if(earlyOut) {
    if(predicate.indexOf("c") < 0) {
      code.push(";if(x===y){return m}else if(x<=y){")
    } else {
      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
    }
  } else {
    code.push(";if(", predicate, "){i=m;")
  }
  if(reversed) {
    code.push("l=m+1}else{h=m-1}")
  } else {
    code.push("h=m-1}else{l=m+1}")
  }
  code.push("}")
  if(earlyOut) {
    code.push("return -1};")
  } else {
    code.push("return i};")
  }
  return code.join("")
}

function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
  var result = new Function([
  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
"function dispatchBsearch", suffix, "(a,y,c,l,h){\
if(a.shape){\
if(typeof(c)==='function'){\
return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
}else{\
return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
}}else{\
if(typeof(c)==='function'){\
return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
}else{\
return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
}}}\
return dispatchBsearch", suffix].join(""))
  return result()
}

module.exports = {
  ge: compileBoundsSearch(">=", false, "GE"),
  gt: compileBoundsSearch(">", false, "GT"),
  lt: compileBoundsSearch("<", true, "LT"),
  le: compileBoundsSearch("<=", true, "LE"),
  eq: compileBoundsSearch("-", true, "EQ", true)
}

},{}],31:[function(require,module,exports){
/**
 * Bit twiddling hacks for JavaScript.
 *
 * Author: Mikola Lysenko
 *
 * Ported from Stanford bit twiddling hack library:
 *    http://graphics.stanford.edu/~seander/bithacks.html
 */

"use strict"; "use restrict";

//Number of bits in an integer
var INT_BITS = 32;

//Constants
exports.INT_BITS  = INT_BITS;
exports.INT_MAX   =  0x7fffffff;
exports.INT_MIN   = -1<<(INT_BITS-1);

//Returns -1, 0, +1 depending on sign of x
exports.sign = function(v) {
  return (v > 0) - (v < 0);
}

//Computes absolute value of integer
exports.abs = function(v) {
  var mask = v >> (INT_BITS-1);
  return (v ^ mask) - mask;
}

//Computes minimum of integers x and y
exports.min = function(x, y) {
  return y ^ ((x ^ y) & -(x < y));
}

//Computes maximum of integers x and y
exports.max = function(x, y) {
  return x ^ ((x ^ y) & -(x < y));
}

//Checks if a number is a power of two
exports.isPow2 = function(v) {
  return !(v & (v-1)) && (!!v);
}

//Computes log base 2 of v
exports.log2 = function(v) {
  var r, shift;
  r =     (v > 0xFFFF) << 4; v >>>= r;
  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
  return r | (v >> 1);
}

//Computes log base 10 of v
exports.log10 = function(v) {
  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
}

//Counts number of bits
exports.popCount = function(v) {
  v = v - ((v >>> 1) & 0x55555555);
  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
}

//Counts number of trailing zeros
function countTrailingZeros(v) {
  var c = 32;
  v &= -v;
  if (v) c--;
  if (v & 0x0000FFFF) c -= 16;
  if (v & 0x00FF00FF) c -= 8;
  if (v & 0x0F0F0F0F) c -= 4;
  if (v & 0x33333333) c -= 2;
  if (v & 0x55555555) c -= 1;
  return c;
}
exports.countTrailingZeros = countTrailingZeros;

//Rounds to next power of 2
exports.nextPow2 = function(v) {
  v += v === 0;
  --v;
  v |= v >>> 1;
  v |= v >>> 2;
  v |= v >>> 4;
  v |= v >>> 8;
  v |= v >>> 16;
  return v + 1;
}

//Rounds down to previous power of 2
exports.prevPow2 = function(v) {
  v |= v >>> 1;
  v |= v >>> 2;
  v |= v >>> 4;
  v |= v >>> 8;
  v |= v >>> 16;
  return v - (v>>>1);
}

//Computes parity of word
exports.parity = function(v) {
  v ^= v >>> 16;
  v ^= v >>> 8;
  v ^= v >>> 4;
  v &= 0xf;
  return (0x6996 >>> v) & 1;
}

var REVERSE_TABLE = new Array(256);

(function(tab) {
  for(var i=0; i<256; ++i) {
    var v = i, r = i, s = 7;
    for (v >>>= 1; v; v >>>= 1) {
      r <<= 1;
      r |= v & 1;
      --s;
    }
    tab[i] = (r << s) & 0xff;
  }
})(REVERSE_TABLE);

//Reverse bits in a 32 bit word
exports.reverse = function(v) {
  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
           REVERSE_TABLE[(v >>> 24) & 0xff];
}

//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
exports.interleave2 = function(x, y) {
  x &= 0xFFFF;
  x = (x | (x << 8)) & 0x00FF00FF;
  x = (x | (x << 4)) & 0x0F0F0F0F;
  x = (x | (x << 2)) & 0x33333333;
  x = (x | (x << 1)) & 0x55555555;

  y &= 0xFFFF;
  y = (y | (y << 8)) & 0x00FF00FF;
  y = (y | (y << 4)) & 0x0F0F0F0F;
  y = (y | (y << 2)) & 0x33333333;
  y = (y | (y << 1)) & 0x55555555;

  return x | (y << 1);
}

//Extracts the nth interleaved component
exports.deinterleave2 = function(v, n) {
  v = (v >>> n) & 0x55555555;
  v = (v | (v >>> 1))  & 0x33333333;
  v = (v | (v >>> 2))  & 0x0F0F0F0F;
  v = (v | (v >>> 4))  & 0x00FF00FF;
  v = (v | (v >>> 16)) & 0x000FFFF;
  return (v << 16) >> 16;
}


//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
exports.interleave3 = function(x, y, z) {
  x &= 0x3FF;
  x  = (x | (x<<16)) & 4278190335;
  x  = (x | (x<<8))  & 251719695;
  x  = (x | (x<<4))  & 3272356035;
  x  = (x | (x<<2))  & 1227133513;

  y &= 0x3FF;
  y  = (y | (y<<16)) & 4278190335;
  y  = (y | (y<<8))  & 251719695;
  y  = (y | (y<<4))  & 3272356035;
  y  = (y | (y<<2))  & 1227133513;
  x |= (y << 1);
  
  z &= 0x3FF;
  z  = (z | (z<<16)) & 4278190335;
  z  = (z | (z<<8))  & 251719695;
  z  = (z | (z<<4))  & 3272356035;
  z  = (z | (z<<2))  & 1227133513;
  
  return x | (z << 2);
}

//Extracts nth interleaved component of a 3-tuple
exports.deinterleave3 = function(v, n) {
  v = (v >>> n)       & 1227133513;
  v = (v | (v>>>2))   & 3272356035;
  v = (v | (v>>>4))   & 251719695;
  v = (v | (v>>>8))   & 4278190335;
  v = (v | (v>>>16))  & 0x3FF;
  return (v<<22)>>22;
}

//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
exports.nextCombination = function(v) {
  var t = v | (v - 1);
  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
}


},{}],32:[function(require,module,exports){
(function (module, exports) {
  'use strict';

  // Utils
  function assert (val, msg) {
    if (!val) throw new Error(msg || 'Assertion failed');
  }

  // Could use `inherits` module, but don't want to move from single file
  // architecture yet.
  function inherits (ctor, superCtor) {
    ctor.super_ = superCtor;
    var TempCtor = function () {};
    TempCtor.prototype = superCtor.prototype;
    ctor.prototype = new TempCtor();
    ctor.prototype.constructor = ctor;
  }

  // BN

  function BN (number, base, endian) {
    if (BN.isBN(number)) {
      return number;
    }

    this.negative = 0;
    this.words = null;
    this.length = 0;

    // Reduction context
    this.red = null;

    if (number !== null) {
      if (base === 'le' || base === 'be') {
        endian = base;
        base = 10;
      }

      this._init(number || 0, base || 10, endian || 'be');
    }
  }
  if (typeof module === 'object') {
    module.exports = BN;
  } else {
    exports.BN = BN;
  }

  BN.BN = BN;
  BN.wordSize = 26;

  var Buffer;
  try {
    Buffer = require('buf' + 'fer').Buffer;
  } catch (e) {
  }

  BN.isBN = function isBN (num) {
    if (num instanceof BN) {
      return true;
    }

    return num !== null && typeof num === 'object' &&
      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
  };

  BN.max = function max (left, right) {
    if (left.cmp(right) > 0) return left;
    return right;
  };

  BN.min = function min (left, right) {
    if (left.cmp(right) < 0) return left;
    return right;
  };

  BN.prototype._init = function init (number, base, endian) {
    if (typeof number === 'number') {
      return this._initNumber(number, base, endian);
    }

    if (typeof number === 'object') {
      return this._initArray(number, base, endian);
    }

    if (base === 'hex') {
      base = 16;
    }
    assert(base === (base | 0) && base >= 2 && base <= 36);

    number = number.toString().replace(/\s+/g, '');
    var start = 0;
    if (number[0] === '-') {
      start++;
    }

    if (base === 16) {
      this._parseHex(number, start);
    } else {
      this._parseBase(number, base, start);
    }

    if (number[0] === '-') {
      this.negative = 1;
    }

    this.strip();

    if (endian !== 'le') return;

    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initNumber = function _initNumber (number, base, endian) {
    if (number < 0) {
      this.negative = 1;
      number = -number;
    }
    if (number < 0x4000000) {
      this.words = [ number & 0x3ffffff ];
      this.length = 1;
    } else if (number < 0x10000000000000) {
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff
      ];
      this.length = 2;
    } else {
      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff,
        1
      ];
      this.length = 3;
    }

    if (endian !== 'le') return;

    // Reverse the bytes
    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initArray = function _initArray (number, base, endian) {
    // Perhaps a Uint8Array
    assert(typeof number.length === 'number');
    if (number.length <= 0) {
      this.words = [ 0 ];
      this.length = 1;
      return this;
    }

    this.length = Math.ceil(number.length / 3);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    var off = 0;
    if (endian === 'be') {
      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    } else if (endian === 'le') {
      for (i = 0, j = 0; i < number.length; i += 3) {
        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    }
    return this.strip();
  };

  function parseHex (str, start, end) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r <<= 4;

      // 'a' - 'f'
      if (c >= 49 && c <= 54) {
        r |= c - 49 + 0xa;

      // 'A' - 'F'
      } else if (c >= 17 && c <= 22) {
        r |= c - 17 + 0xa;

      // '0' - '9'
      } else {
        r |= c & 0xf;
      }
    }
    return r;
  }

  BN.prototype._parseHex = function _parseHex (number, start) {
    // Create possibly bigger array to ensure that it fits the number
    this.length = Math.ceil((number.length - start) / 6);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    // Scan 24-bit chunks and add them to the number
    var off = 0;
    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
      w = parseHex(number, i, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
      off += 24;
      if (off >= 26) {
        off -= 26;
        j++;
      }
    }
    if (i + 6 !== start) {
      w = parseHex(number, start, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
    }
    this.strip();
  };

  function parseBase (str, start, end, mul) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r *= mul;

      // 'a'
      if (c >= 49) {
        r += c - 49 + 0xa;

      // 'A'
      } else if (c >= 17) {
        r += c - 17 + 0xa;

      // '0' - '9'
      } else {
        r += c;
      }
    }
    return r;
  }

  BN.prototype._parseBase = function _parseBase (number, base, start) {
    // Initialize as zero
    this.words = [ 0 ];
    this.length = 1;

    // Find length of limb in base
    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
      limbLen++;
    }
    limbLen--;
    limbPow = (limbPow / base) | 0;

    var total = number.length - start;
    var mod = total % limbLen;
    var end = Math.min(total, total - mod) + start;

    var word = 0;
    for (var i = start; i < end; i += limbLen) {
      word = parseBase(number, i, i + limbLen, base);

      this.imuln(limbPow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }

    if (mod !== 0) {
      var pow = 1;
      word = parseBase(number, i, number.length, base);

      for (i = 0; i < mod; i++) {
        pow *= base;
      }

      this.imuln(pow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }
  };

  BN.prototype.copy = function copy (dest) {
    dest.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      dest.words[i] = this.words[i];
    }
    dest.length = this.length;
    dest.negative = this.negative;
    dest.red = this.red;
  };

  BN.prototype.clone = function clone () {
    var r = new BN(null);
    this.copy(r);
    return r;
  };

  BN.prototype._expand = function _expand (size) {
    while (this.length < size) {
      this.words[this.length++] = 0;
    }
    return this;
  };

  // Remove leading `0` from `this`
  BN.prototype.strip = function strip () {
    while (this.length > 1 && this.words[this.length - 1] === 0) {
      this.length--;
    }
    return this._normSign();
  };

  BN.prototype._normSign = function _normSign () {
    // -0 = 0
    if (this.length === 1 && this.words[0] === 0) {
      this.negative = 0;
    }
    return this;
  };

  BN.prototype.inspect = function inspect () {
    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
  };

  /*

  var zeros = [];
  var groupSizes = [];
  var groupBases = [];

  var s = '';
  var i = -1;
  while (++i < BN.wordSize) {
    zeros[i] = s;
    s += '0';
  }
  groupSizes[0] = 0;
  groupSizes[1] = 0;
  groupBases[0] = 0;
  groupBases[1] = 0;
  var base = 2 - 1;
  while (++base < 36 + 1) {
    var groupSize = 0;
    var groupBase = 1;
    while (groupBase < (1 << BN.wordSize) / base) {
      groupBase *= base;
      groupSize += 1;
    }
    groupSizes[base] = groupSize;
    groupBases[base] = groupBase;
  }

  */

  var zeros = [
    '',
    '0',
    '00',
    '000',
    '0000',
    '00000',
    '000000',
    '0000000',
    '00000000',
    '000000000',
    '0000000000',
    '00000000000',
    '000000000000',
    '0000000000000',
    '00000000000000',
    '000000000000000',
    '0000000000000000',
    '00000000000000000',
    '000000000000000000',
    '0000000000000000000',
    '00000000000000000000',
    '000000000000000000000',
    '0000000000000000000000',
    '00000000000000000000000',
    '000000000000000000000000',
    '0000000000000000000000000'
  ];

  var groupSizes = [
    0, 0,
    25, 16, 12, 11, 10, 9, 8,
    8, 7, 7, 7, 7, 6, 6,
    6, 6, 6, 6, 6, 5, 5,
    5, 5, 5, 5, 5, 5, 5,
    5, 5, 5, 5, 5, 5, 5
  ];

  var groupBases = [
    0, 0,
    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
  ];

  BN.prototype.toString = function toString (base, padding) {
    base = base || 10;
    padding = padding | 0 || 1;

    var out;
    if (base === 16 || base === 'hex') {
      out = '';
      var off = 0;
      var carry = 0;
      for (var i = 0; i < this.length; i++) {
        var w = this.words[i];
        var word = (((w << off) | carry) & 0xffffff).toString(16);
        carry = (w >>> (24 - off)) & 0xffffff;
        if (carry !== 0 || i !== this.length - 1) {
          out = zeros[6 - word.length] + word + out;
        } else {
          out = word + out;
        }
        off += 2;
        if (off >= 26) {
          off -= 26;
          i--;
        }
      }
      if (carry !== 0) {
        out = carry.toString(16) + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    if (base === (base | 0) && base >= 2 && base <= 36) {
      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
      var groupSize = groupSizes[base];
      // var groupBase = Math.pow(base, groupSize);
      var groupBase = groupBases[base];
      out = '';
      var c = this.clone();
      c.negative = 0;
      while (!c.isZero()) {
        var r = c.modn(groupBase).toString(base);
        c = c.idivn(groupBase);

        if (!c.isZero()) {
          out = zeros[groupSize - r.length] + r + out;
        } else {
          out = r + out;
        }
      }
      if (this.isZero()) {
        out = '0' + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    assert(false, 'Base should be between 2 and 36');
  };

  BN.prototype.toNumber = function toNumber () {
    var ret = this.words[0];
    if (this.length === 2) {
      ret += this.words[1] * 0x4000000;
    } else if (this.length === 3 && this.words[2] === 0x01) {
      // NOTE: at this stage it is known that the top bit is set
      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
    } else if (this.length > 2) {
      assert(false, 'Number can only safely store up to 53 bits');
    }
    return (this.negative !== 0) ? -ret : ret;
  };

  BN.prototype.toJSON = function toJSON () {
    return this.toString(16);
  };

  BN.prototype.toBuffer = function toBuffer (endian, length) {
    assert(typeof Buffer !== 'undefined');
    return this.toArrayLike(Buffer, endian, length);
  };

  BN.prototype.toArray = function toArray (endian, length) {
    return this.toArrayLike(Array, endian, length);
  };

  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
    var byteLength = this.byteLength();
    var reqLength = length || Math.max(1, byteLength);
    assert(byteLength <= reqLength, 'byte array longer than desired length');
    assert(reqLength > 0, 'Requested array length <= 0');

    this.strip();
    var littleEndian = endian === 'le';
    var res = new ArrayType(reqLength);

    var b, i;
    var q = this.clone();
    if (!littleEndian) {
      // Assume big-endian
      for (i = 0; i < reqLength - byteLength; i++) {
        res[i] = 0;
      }

      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[reqLength - i - 1] = b;
      }
    } else {
      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[i] = b;
      }

      for (; i < reqLength; i++) {
        res[i] = 0;
      }
    }

    return res;
  };

  if (Math.clz32) {
    BN.prototype._countBits = function _countBits (w) {
      return 32 - Math.clz32(w);
    };
  } else {
    BN.prototype._countBits = function _countBits (w) {
      var t = w;
      var r = 0;
      if (t >= 0x1000) {
        r += 13;
        t >>>= 13;
      }
      if (t >= 0x40) {
        r += 7;
        t >>>= 7;
      }
      if (t >= 0x8) {
        r += 4;
        t >>>= 4;
      }
      if (t >= 0x02) {
        r += 2;
        t >>>= 2;
      }
      return r + t;
    };
  }

  BN.prototype._zeroBits = function _zeroBits (w) {
    // Short-cut
    if (w === 0) return 26;

    var t = w;
    var r = 0;
    if ((t & 0x1fff) === 0) {
      r += 13;
      t >>>= 13;
    }
    if ((t & 0x7f) === 0) {
      r += 7;
      t >>>= 7;
    }
    if ((t & 0xf) === 0) {
      r += 4;
      t >>>= 4;
    }
    if ((t & 0x3) === 0) {
      r += 2;
      t >>>= 2;
    }
    if ((t & 0x1) === 0) {
      r++;
    }
    return r;
  };

  // Return number of used bits in a BN
  BN.prototype.bitLength = function bitLength () {
    var w = this.words[this.length - 1];
    var hi = this._countBits(w);
    return (this.length - 1) * 26 + hi;
  };

  function toBitArray (num) {
    var w = new Array(num.bitLength());

    for (var bit = 0; bit < w.length; bit++) {
      var off = (bit / 26) | 0;
      var wbit = bit % 26;

      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
    }

    return w;
  }

  // Number of trailing zero bits
  BN.prototype.zeroBits = function zeroBits () {
    if (this.isZero()) return 0;

    var r = 0;
    for (var i = 0; i < this.length; i++) {
      var b = this._zeroBits(this.words[i]);
      r += b;
      if (b !== 26) break;
    }
    return r;
  };

  BN.prototype.byteLength = function byteLength () {
    return Math.ceil(this.bitLength() / 8);
  };

  BN.prototype.toTwos = function toTwos (width) {
    if (this.negative !== 0) {
      return this.abs().inotn(width).iaddn(1);
    }
    return this.clone();
  };

  BN.prototype.fromTwos = function fromTwos (width) {
    if (this.testn(width - 1)) {
      return this.notn(width).iaddn(1).ineg();
    }
    return this.clone();
  };

  BN.prototype.isNeg = function isNeg () {
    return this.negative !== 0;
  };

  // Return negative clone of `this`
  BN.prototype.neg = function neg () {
    return this.clone().ineg();
  };

  BN.prototype.ineg = function ineg () {
    if (!this.isZero()) {
      this.negative ^= 1;
    }

    return this;
  };

  // Or `num` with `this` in-place
  BN.prototype.iuor = function iuor (num) {
    while (this.length < num.length) {
      this.words[this.length++] = 0;
    }

    for (var i = 0; i < num.length; i++) {
      this.words[i] = this.words[i] | num.words[i];
    }

    return this.strip();
  };

  BN.prototype.ior = function ior (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuor(num);
  };

  // Or `num` with `this`
  BN.prototype.or = function or (num) {
    if (this.length > num.length) return this.clone().ior(num);
    return num.clone().ior(this);
  };

  BN.prototype.uor = function uor (num) {
    if (this.length > num.length) return this.clone().iuor(num);
    return num.clone().iuor(this);
  };

  // And `num` with `this` in-place
  BN.prototype.iuand = function iuand (num) {
    // b = min-length(num, this)
    var b;
    if (this.length > num.length) {
      b = num;
    } else {
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = this.words[i] & num.words[i];
    }

    this.length = b.length;

    return this.strip();
  };

  BN.prototype.iand = function iand (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuand(num);
  };

  // And `num` with `this`
  BN.prototype.and = function and (num) {
    if (this.length > num.length) return this.clone().iand(num);
    return num.clone().iand(this);
  };

  BN.prototype.uand = function uand (num) {
    if (this.length > num.length) return this.clone().iuand(num);
    return num.clone().iuand(this);
  };

  // Xor `num` with `this` in-place
  BN.prototype.iuxor = function iuxor (num) {
    // a.length > b.length
    var a;
    var b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = a.words[i] ^ b.words[i];
    }

    if (this !== a) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = a.length;

    return this.strip();
  };

  BN.prototype.ixor = function ixor (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuxor(num);
  };

  // Xor `num` with `this`
  BN.prototype.xor = function xor (num) {
    if (this.length > num.length) return this.clone().ixor(num);
    return num.clone().ixor(this);
  };

  BN.prototype.uxor = function uxor (num) {
    if (this.length > num.length) return this.clone().iuxor(num);
    return num.clone().iuxor(this);
  };

  // Not ``this`` with ``width`` bitwidth
  BN.prototype.inotn = function inotn (width) {
    assert(typeof width === 'number' && width >= 0);

    var bytesNeeded = Math.ceil(width / 26) | 0;
    var bitsLeft = width % 26;

    // Extend the buffer with leading zeroes
    this._expand(bytesNeeded);

    if (bitsLeft > 0) {
      bytesNeeded--;
    }

    // Handle complete words
    for (var i = 0; i < bytesNeeded; i++) {
      this.words[i] = ~this.words[i] & 0x3ffffff;
    }

    // Handle the residue
    if (bitsLeft > 0) {
      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
    }

    // And remove leading zeroes
    return this.strip();
  };

  BN.prototype.notn = function notn (width) {
    return this.clone().inotn(width);
  };

  // Set `bit` of `this`
  BN.prototype.setn = function setn (bit, val) {
    assert(typeof bit === 'number' && bit >= 0);

    var off = (bit / 26) | 0;
    var wbit = bit % 26;

    this._expand(off + 1);

    if (val) {
      this.words[off] = this.words[off] | (1 << wbit);
    } else {
      this.words[off] = this.words[off] & ~(1 << wbit);
    }

    return this.strip();
  };

  // Add `num` to `this` in-place
  BN.prototype.iadd = function iadd (num) {
    var r;

    // negative + positive
    if (this.negative !== 0 && num.negative === 0) {
      this.negative = 0;
      r = this.isub(num);
      this.negative ^= 1;
      return this._normSign();

    // positive + negative
    } else if (this.negative === 0 && num.negative !== 0) {
      num.negative = 0;
      r = this.isub(num);
      num.negative = 1;
      return r._normSign();
    }

    // a.length > b.length
    var a, b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }

    this.length = a.length;
    if (carry !== 0) {
      this.words[this.length] = carry;
      this.length++;
    // Copy the rest of the words
    } else if (a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    return this;
  };

  // Add `num` to `this`
  BN.prototype.add = function add (num) {
    var res;
    if (num.negative !== 0 && this.negative === 0) {
      num.negative = 0;
      res = this.sub(num);
      num.negative ^= 1;
      return res;
    } else if (num.negative === 0 && this.negative !== 0) {
      this.negative = 0;
      res = num.sub(this);
      this.negative = 1;
      return res;
    }

    if (this.length > num.length) return this.clone().iadd(num);

    return num.clone().iadd(this);
  };

  // Subtract `num` from `this` in-place
  BN.prototype.isub = function isub (num) {
    // this - (-num) = this + num
    if (num.negative !== 0) {
      num.negative = 0;
      var r = this.iadd(num);
      num.negative = 1;
      return r._normSign();

    // -this - num = -(this + num)
    } else if (this.negative !== 0) {
      this.negative = 0;
      this.iadd(num);
      this.negative = 1;
      return this._normSign();
    }

    // At this point both numbers are positive
    var cmp = this.cmp(num);

    // Optimization - zeroify
    if (cmp === 0) {
      this.negative = 0;
      this.length = 1;
      this.words[0] = 0;
      return this;
    }

    // a > b
    var a, b;
    if (cmp > 0) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }

    // Copy rest of the words
    if (carry === 0 && i < a.length && a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = Math.max(this.length, i);

    if (a !== this) {
      this.negative = 1;
    }

    return this.strip();
  };

  // Subtract `num` from `this`
  BN.prototype.sub = function sub (num) {
    return this.clone().isub(num);
  };

  function smallMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    var len = (self.length + num.length) | 0;
    out.length = len;
    len = (len - 1) | 0;

    // Peel one iteration (compiler can't do it, because of code complexity)
    var a = self.words[0] | 0;
    var b = num.words[0] | 0;
    var r = a * b;

    var lo = r & 0x3ffffff;
    var carry = (r / 0x4000000) | 0;
    out.words[0] = lo;

    for (var k = 1; k < len; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = carry >>> 26;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = (k - j) | 0;
        a = self.words[i] | 0;
        b = num.words[j] | 0;
        r = a * b + rword;
        ncarry += (r / 0x4000000) | 0;
        rword = r & 0x3ffffff;
      }
      out.words[k] = rword | 0;
      carry = ncarry | 0;
    }
    if (carry !== 0) {
      out.words[k] = carry | 0;
    } else {
      out.length--;
    }

    return out.strip();
  }

  // TODO(indutny): it may be reasonable to omit it for users who don't need
  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
  // multiplication (like elliptic secp256k1).
  var comb10MulTo = function comb10MulTo (self, num, out) {
    var a = self.words;
    var b = num.words;
    var o = out.words;
    var c = 0;
    var lo;
    var mid;
    var hi;
    var a0 = a[0] | 0;
    var al0 = a0 & 0x1fff;
    var ah0 = a0 >>> 13;
    var a1 = a[1] | 0;
    var al1 = a1 & 0x1fff;
    var ah1 = a1 >>> 13;
    var a2 = a[2] | 0;
    var al2 = a2 & 0x1fff;
    var ah2 = a2 >>> 13;
    var a3 = a[3] | 0;
    var al3 = a3 & 0x1fff;
    var ah3 = a3 >>> 13;
    var a4 = a[4] | 0;
    var al4 = a4 & 0x1fff;
    var ah4 = a4 >>> 13;
    var a5 = a[5] | 0;
    var al5 = a5 & 0x1fff;
    var ah5 = a5 >>> 13;
    var a6 = a[6] | 0;
    var al6 = a6 & 0x1fff;
    var ah6 = a6 >>> 13;
    var a7 = a[7] | 0;
    var al7 = a7 & 0x1fff;
    var ah7 = a7 >>> 13;
    var a8 = a[8] | 0;
    var al8 = a8 & 0x1fff;
    var ah8 = a8 >>> 13;
    var a9 = a[9] | 0;
    var al9 = a9 & 0x1fff;
    var ah9 = a9 >>> 13;
    var b0 = b[0] | 0;
    var bl0 = b0 & 0x1fff;
    var bh0 = b0 >>> 13;
    var b1 = b[1] | 0;
    var bl1 = b1 & 0x1fff;
    var bh1 = b1 >>> 13;
    var b2 = b[2] | 0;
    var bl2 = b2 & 0x1fff;
    var bh2 = b2 >>> 13;
    var b3 = b[3] | 0;
    var bl3 = b3 & 0x1fff;
    var bh3 = b3 >>> 13;
    var b4 = b[4] | 0;
    var bl4 = b4 & 0x1fff;
    var bh4 = b4 >>> 13;
    var b5 = b[5] | 0;
    var bl5 = b5 & 0x1fff;
    var bh5 = b5 >>> 13;
    var b6 = b[6] | 0;
    var bl6 = b6 & 0x1fff;
    var bh6 = b6 >>> 13;
    var b7 = b[7] | 0;
    var bl7 = b7 & 0x1fff;
    var bh7 = b7 >>> 13;
    var b8 = b[8] | 0;
    var bl8 = b8 & 0x1fff;
    var bh8 = b8 >>> 13;
    var b9 = b[9] | 0;
    var bl9 = b9 & 0x1fff;
    var bh9 = b9 >>> 13;

    out.negative = self.negative ^ num.negative;
    out.length = 19;
    /* k = 0 */
    lo = Math.imul(al0, bl0);
    mid = Math.imul(al0, bh0);
    mid = (mid + Math.imul(ah0, bl0)) | 0;
    hi = Math.imul(ah0, bh0);
    var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
    w0 &= 0x3ffffff;
    /* k = 1 */
    lo = Math.imul(al1, bl0);
    mid = Math.imul(al1, bh0);
    mid = (mid + Math.imul(ah1, bl0)) | 0;
    hi = Math.imul(ah1, bh0);
    lo = (lo + Math.imul(al0, bl1)) | 0;
    mid = (mid + Math.imul(al0, bh1)) | 0;
    mid = (mid + Math.imul(ah0, bl1)) | 0;
    hi = (hi + Math.imul(ah0, bh1)) | 0;
    var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
    w1 &= 0x3ffffff;
    /* k = 2 */
    lo = Math.imul(al2, bl0);
    mid = Math.imul(al2, bh0);
    mid = (mid + Math.imul(ah2, bl0)) | 0;
    hi = Math.imul(ah2, bh0);
    lo = (lo + Math.imul(al1, bl1)) | 0;
    mid = (mid + Math.imul(al1, bh1)) | 0;
    mid = (mid + Math.imul(ah1, bl1)) | 0;
    hi = (hi + Math.imul(ah1, bh1)) | 0;
    lo = (lo + Math.imul(al0, bl2)) | 0;
    mid = (mid + Math.imul(al0, bh2)) | 0;
    mid = (mid + Math.imul(ah0, bl2)) | 0;
    hi = (hi + Math.imul(ah0, bh2)) | 0;
    var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0;
    w2 &= 0x3ffffff;
    /* k = 3 */
    lo = Math.imul(al3, bl0);
    mid = Math.imul(al3, bh0);
    mid = (mid + Math.imul(ah3, bl0)) | 0;
    hi = Math.imul(ah3, bh0);
    lo = (lo + Math.imul(al2, bl1)) | 0;
    mid = (mid + Math.imul(al2, bh1)) | 0;
    mid = (mid + Math.imul(ah2, bl1)) | 0;
    hi = (hi + Math.imul(ah2, bh1)) | 0;
    lo = (lo + Math.imul(al1, bl2)) | 0;
    mid = (mid + Math.imul(al1, bh2)) | 0;
    mid = (mid + Math.imul(ah1, bl2)) | 0;
    hi = (hi + Math.imul(ah1, bh2)) | 0;
    lo = (lo + Math.imul(al0, bl3)) | 0;
    mid = (mid + Math.imul(al0, bh3)) | 0;
    mid = (mid + Math.imul(ah0, bl3)) | 0;
    hi = (hi + Math.imul(ah0, bh3)) | 0;
    var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0;
    w3 &= 0x3ffffff;
    /* k = 4 */
    lo = Math.imul(al4, bl0);
    mid = Math.imul(al4, bh0);
    mid = (mid + Math.imul(ah4, bl0)) | 0;
    hi = Math.imul(ah4, bh0);
    lo = (lo + Math.imul(al3, bl1)) | 0;
    mid = (mid + Math.imul(al3, bh1)) | 0;
    mid = (mid + Math.imul(ah3, bl1)) | 0;
    hi = (hi + Math.imul(ah3, bh1)) | 0;
    lo = (lo + Math.imul(al2, bl2)) | 0;
    mid = (mid + Math.imul(al2, bh2)) | 0;
    mid = (mid + Math.imul(ah2, bl2)) | 0;
    hi = (hi + Math.imul(ah2, bh2)) | 0;
    lo = (lo + Math.imul(al1, bl3)) | 0;
    mid = (mid + Math.imul(al1, bh3)) | 0;
    mid = (mid + Math.imul(ah1, bl3)) | 0;
    hi = (hi + Math.imul(ah1, bh3)) | 0;
    lo = (lo + Math.imul(al0, bl4)) | 0;
    mid = (mid + Math.imul(al0, bh4)) | 0;
    mid = (mid + Math.imul(ah0, bl4)) | 0;
    hi = (hi + Math.imul(ah0, bh4)) | 0;
    var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0;
    w4 &= 0x3ffffff;
    /* k = 5 */
    lo = Math.imul(al5, bl0);
    mid = Math.imul(al5, bh0);
    mid = (mid + Math.imul(ah5, bl0)) | 0;
    hi = Math.imul(ah5, bh0);
    lo = (lo + Math.imul(al4, bl1)) | 0;
    mid = (mid + Math.imul(al4, bh1)) | 0;
    mid = (mid + Math.imul(ah4, bl1)) | 0;
    hi = (hi + Math.imul(ah4, bh1)) | 0;
    lo = (lo + Math.imul(al3, bl2)) | 0;
    mid = (mid + Math.imul(al3, bh2)) | 0;
    mid = (mid + Math.imul(ah3, bl2)) | 0;
    hi = (hi + Math.imul(ah3, bh2)) | 0;
    lo = (lo + Math.imul(al2, bl3)) | 0;
    mid = (mid + Math.imul(al2, bh3)) | 0;
    mid = (mid + Math.imul(ah2, bl3)) | 0;
    hi = (hi + Math.imul(ah2, bh3)) | 0;
    lo = (lo + Math.imul(al1, bl4)) | 0;
    mid = (mid + Math.imul(al1, bh4)) | 0;
    mid = (mid + Math.imul(ah1, bl4)) | 0;
    hi = (hi + Math.imul(ah1, bh4)) | 0;
    lo = (lo + Math.imul(al0, bl5)) | 0;
    mid = (mid + Math.imul(al0, bh5)) | 0;
    mid = (mid + Math.imul(ah0, bl5)) | 0;
    hi = (hi + Math.imul(ah0, bh5)) | 0;
    var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0;
    w5 &= 0x3ffffff;
    /* k = 6 */
    lo = Math.imul(al6, bl0);
    mid = Math.imul(al6, bh0);
    mid = (mid + Math.imul(ah6, bl0)) | 0;
    hi = Math.imul(ah6, bh0);
    lo = (lo + Math.imul(al5, bl1)) | 0;
    mid = (mid + Math.imul(al5, bh1)) | 0;
    mid = (mid + Math.imul(ah5, bl1)) | 0;
    hi = (hi + Math.imul(ah5, bh1)) | 0;
    lo = (lo + Math.imul(al4, bl2)) | 0;
    mid = (mid + Math.imul(al4, bh2)) | 0;
    mid = (mid + Math.imul(ah4, bl2)) | 0;
    hi = (hi + Math.imul(ah4, bh2)) | 0;
    lo = (lo + Math.imul(al3, bl3)) | 0;
    mid = (mid + Math.imul(al3, bh3)) | 0;
    mid = (mid + Math.imul(ah3, bl3)) | 0;
    hi = (hi + Math.imul(ah3, bh3)) | 0;
    lo = (lo + Math.imul(al2, bl4)) | 0;
    mid = (mid + Math.imul(al2, bh4)) | 0;
    mid = (mid + Math.imul(ah2, bl4)) | 0;
    hi = (hi + Math.imul(ah2, bh4)) | 0;
    lo = (lo + Math.imul(al1, bl5)) | 0;
    mid = (mid + Math.imul(al1, bh5)) | 0;
    mid = (mid + Math.imul(ah1, bl5)) | 0;
    hi = (hi + Math.imul(ah1, bh5)) | 0;
    lo = (lo + Math.imul(al0, bl6)) | 0;
    mid = (mid + Math.imul(al0, bh6)) | 0;
    mid = (mid + Math.imul(ah0, bl6)) | 0;
    hi = (hi + Math.imul(ah0, bh6)) | 0;
    var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0;
    w6 &= 0x3ffffff;
    /* k = 7 */
    lo = Math.imul(al7, bl0);
    mid = Math.imul(al7, bh0);
    mid = (mid + Math.imul(ah7, bl0)) | 0;
    hi = Math.imul(ah7, bh0);
    lo = (lo + Math.imul(al6, bl1)) | 0;
    mid = (mid + Math.imul(al6, bh1)) | 0;
    mid = (mid + Math.imul(ah6, bl1)) | 0;
    hi = (hi + Math.imul(ah6, bh1)) | 0;
    lo = (lo + Math.imul(al5, bl2)) | 0;
    mid = (mid + Math.imul(al5, bh2)) | 0;
    mid = (mid + Math.imul(ah5, bl2)) | 0;
    hi = (hi + Math.imul(ah5, bh2)) | 0;
    lo = (lo + Math.imul(al4, bl3)) | 0;
    mid = (mid + Math.imul(al4, bh3)) | 0;
    mid = (mid + Math.imul(ah4, bl3)) | 0;
    hi = (hi + Math.imul(ah4, bh3)) | 0;
    lo = (lo + Math.imul(al3, bl4)) | 0;
    mid = (mid + Math.imul(al3, bh4)) | 0;
    mid = (mid + Math.imul(ah3, bl4)) | 0;
    hi = (hi + Math.imul(ah3, bh4)) | 0;
    lo = (lo + Math.imul(al2, bl5)) | 0;
    mid = (mid + Math.imul(al2, bh5)) | 0;
    mid = (mid + Math.imul(ah2, bl5)) | 0;
    hi = (hi + Math.imul(ah2, bh5)) | 0;
    lo = (lo + Math.imul(al1, bl6)) | 0;
    mid = (mid + Math.imul(al1, bh6)) | 0;
    mid = (mid + Math.imul(ah1, bl6)) | 0;
    hi = (hi + Math.imul(ah1, bh6)) | 0;
    lo = (lo + Math.imul(al0, bl7)) | 0;
    mid = (mid + Math.imul(al0, bh7)) | 0;
    mid = (mid + Math.imul(ah0, bl7)) | 0;
    hi = (hi + Math.imul(ah0, bh7)) | 0;
    var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0;
    w7 &= 0x3ffffff;
    /* k = 8 */
    lo = Math.imul(al8, bl0);
    mid = Math.imul(al8, bh0);
    mid = (mid + Math.imul(ah8, bl0)) | 0;
    hi = Math.imul(ah8, bh0);
    lo = (lo + Math.imul(al7, bl1)) | 0;
    mid = (mid + Math.imul(al7, bh1)) | 0;
    mid = (mid + Math.imul(ah7, bl1)) | 0;
    hi = (hi + Math.imul(ah7, bh1)) | 0;
    lo = (lo + Math.imul(al6, bl2)) | 0;
    mid = (mid + Math.imul(al6, bh2)) | 0;
    mid = (mid + Math.imul(ah6, bl2)) | 0;
    hi = (hi + Math.imul(ah6, bh2)) | 0;
    lo = (lo + Math.imul(al5, bl3)) | 0;
    mid = (mid + Math.imul(al5, bh3)) | 0;
    mid = (mid + Math.imul(ah5, bl3)) | 0;
    hi = (hi + Math.imul(ah5, bh3)) | 0;
    lo = (lo + Math.imul(al4, bl4)) | 0;
    mid = (mid + Math.imul(al4, bh4)) | 0;
    mid = (mid + Math.imul(ah4, bl4)) | 0;
    hi = (hi + Math.imul(ah4, bh4)) | 0;
    lo = (lo + Math.imul(al3, bl5)) | 0;
    mid = (mid + Math.imul(al3, bh5)) | 0;
    mid = (mid + Math.imul(ah3, bl5)) | 0;
    hi = (hi + Math.imul(ah3, bh5)) | 0;
    lo = (lo + Math.imul(al2, bl6)) | 0;
    mid = (mid + Math.imul(al2, bh6)) | 0;
    mid = (mid + Math.imul(ah2, bl6)) | 0;
    hi = (hi + Math.imul(ah2, bh6)) | 0;
    lo = (lo + Math.imul(al1, bl7)) | 0;
    mid = (mid + Math.imul(al1, bh7)) | 0;
    mid = (mid + Math.imul(ah1, bl7)) | 0;
    hi = (hi + Math.imul(ah1, bh7)) | 0;
    lo = (lo + Math.imul(al0, bl8)) | 0;
    mid = (mid + Math.imul(al0, bh8)) | 0;
    mid = (mid + Math.imul(ah0, bl8)) | 0;
    hi = (hi + Math.imul(ah0, bh8)) | 0;
    var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0;
    w8 &= 0x3ffffff;
    /* k = 9 */
    lo = Math.imul(al9, bl0);
    mid = Math.imul(al9, bh0);
    mid = (mid + Math.imul(ah9, bl0)) | 0;
    hi = Math.imul(ah9, bh0);
    lo = (lo + Math.imul(al8, bl1)) | 0;
    mid = (mid + Math.imul(al8, bh1)) | 0;
    mid = (mid + Math.imul(ah8, bl1)) | 0;
    hi = (hi + Math.imul(ah8, bh1)) | 0;
    lo = (lo + Math.imul(al7, bl2)) | 0;
    mid = (mid + Math.imul(al7, bh2)) | 0;
    mid = (mid + Math.imul(ah7, bl2)) | 0;
    hi = (hi + Math.imul(ah7, bh2)) | 0;
    lo = (lo + Math.imul(al6, bl3)) | 0;
    mid = (mid + Math.imul(al6, bh3)) | 0;
    mid = (mid + Math.imul(ah6, bl3)) | 0;
    hi = (hi + Math.imul(ah6, bh3)) | 0;
    lo = (lo + Math.imul(al5, bl4)) | 0;
    mid = (mid + Math.imul(al5, bh4)) | 0;
    mid = (mid + Math.imul(ah5, bl4)) | 0;
    hi = (hi + Math.imul(ah5, bh4)) | 0;
    lo = (lo + Math.imul(al4, bl5)) | 0;
    mid = (mid + Math.imul(al4, bh5)) | 0;
    mid = (mid + Math.imul(ah4, bl5)) | 0;
    hi = (hi + Math.imul(ah4, bh5)) | 0;
    lo = (lo + Math.imul(al3, bl6)) | 0;
    mid = (mid + Math.imul(al3, bh6)) | 0;
    mid = (mid + Math.imul(ah3, bl6)) | 0;
    hi = (hi + Math.imul(ah3, bh6)) | 0;
    lo = (lo + Math.imul(al2, bl7)) | 0;
    mid = (mid + Math.imul(al2, bh7)) | 0;
    mid = (mid + Math.imul(ah2, bl7)) | 0;
    hi = (hi + Math.imul(ah2, bh7)) | 0;
    lo = (lo + Math.imul(al1, bl8)) | 0;
    mid = (mid + Math.imul(al1, bh8)) | 0;
    mid = (mid + Math.imul(ah1, bl8)) | 0;
    hi = (hi + Math.imul(ah1, bh8)) | 0;
    lo = (lo + Math.imul(al0, bl9)) | 0;
    mid = (mid + Math.imul(al0, bh9)) | 0;
    mid = (mid + Math.imul(ah0, bl9)) | 0;
    hi = (hi + Math.imul(ah0, bh9)) | 0;
    var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0;
    w9 &= 0x3ffffff;
    /* k = 10 */
    lo = Math.imul(al9, bl1);
    mid = Math.imul(al9, bh1);
    mid = (mid + Math.imul(ah9, bl1)) | 0;
    hi = Math.imul(ah9, bh1);
    lo = (lo + Math.imul(al8, bl2)) | 0;
    mid = (mid + Math.imul(al8, bh2)) | 0;
    mid = (mid + Math.imul(ah8, bl2)) | 0;
    hi = (hi + Math.imul(ah8, bh2)) | 0;
    lo = (lo + Math.imul(al7, bl3)) | 0;
    mid = (mid + Math.imul(al7, bh3)) | 0;
    mid = (mid + Math.imul(ah7, bl3)) | 0;
    hi = (hi + Math.imul(ah7, bh3)) | 0;
    lo = (lo + Math.imul(al6, bl4)) | 0;
    mid = (mid + Math.imul(al6, bh4)) | 0;
    mid = (mid + Math.imul(ah6, bl4)) | 0;
    hi = (hi + Math.imul(ah6, bh4)) | 0;
    lo = (lo + Math.imul(al5, bl5)) | 0;
    mid = (mid + Math.imul(al5, bh5)) | 0;
    mid = (mid + Math.imul(ah5, bl5)) | 0;
    hi = (hi + Math.imul(ah5, bh5)) | 0;
    lo = (lo + Math.imul(al4, bl6)) | 0;
    mid = (mid + Math.imul(al4, bh6)) | 0;
    mid = (mid + Math.imul(ah4, bl6)) | 0;
    hi = (hi + Math.imul(ah4, bh6)) | 0;
    lo = (lo + Math.imul(al3, bl7)) | 0;
    mid = (mid + Math.imul(al3, bh7)) | 0;
    mid = (mid + Math.imul(ah3, bl7)) | 0;
    hi = (hi + Math.imul(ah3, bh7)) | 0;
    lo = (lo + Math.imul(al2, bl8)) | 0;
    mid = (mid + Math.imul(al2, bh8)) | 0;
    mid = (mid + Math.imul(ah2, bl8)) | 0;
    hi = (hi + Math.imul(ah2, bh8)) | 0;
    lo = (lo + Math.imul(al1, bl9)) | 0;
    mid = (mid + Math.imul(al1, bh9)) | 0;
    mid = (mid + Math.imul(ah1, bl9)) | 0;
    hi = (hi + Math.imul(ah1, bh9)) | 0;
    var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0;
    w10 &= 0x3ffffff;
    /* k = 11 */
    lo = Math.imul(al9, bl2);
    mid = Math.imul(al9, bh2);
    mid = (mid + Math.imul(ah9, bl2)) | 0;
    hi = Math.imul(ah9, bh2);
    lo = (lo + Math.imul(al8, bl3)) | 0;
    mid = (mid + Math.imul(al8, bh3)) | 0;
    mid = (mid + Math.imul(ah8, bl3)) | 0;
    hi = (hi + Math.imul(ah8, bh3)) | 0;
    lo = (lo + Math.imul(al7, bl4)) | 0;
    mid = (mid + Math.imul(al7, bh4)) | 0;
    mid = (mid + Math.imul(ah7, bl4)) | 0;
    hi = (hi + Math.imul(ah7, bh4)) | 0;
    lo = (lo + Math.imul(al6, bl5)) | 0;
    mid = (mid + Math.imul(al6, bh5)) | 0;
    mid = (mid + Math.imul(ah6, bl5)) | 0;
    hi = (hi + Math.imul(ah6, bh5)) | 0;
    lo = (lo + Math.imul(al5, bl6)) | 0;
    mid = (mid + Math.imul(al5, bh6)) | 0;
    mid = (mid + Math.imul(ah5, bl6)) | 0;
    hi = (hi + Math.imul(ah5, bh6)) | 0;
    lo = (lo + Math.imul(al4, bl7)) | 0;
    mid = (mid + Math.imul(al4, bh7)) | 0;
    mid = (mid + Math.imul(ah4, bl7)) | 0;
    hi = (hi + Math.imul(ah4, bh7)) | 0;
    lo = (lo + Math.imul(al3, bl8)) | 0;
    mid = (mid + Math.imul(al3, bh8)) | 0;
    mid = (mid + Math.imul(ah3, bl8)) | 0;
    hi = (hi + Math.imul(ah3, bh8)) | 0;
    lo = (lo + Math.imul(al2, bl9)) | 0;
    mid = (mid + Math.imul(al2, bh9)) | 0;
    mid = (mid + Math.imul(ah2, bl9)) | 0;
    hi = (hi + Math.imul(ah2, bh9)) | 0;
    var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0;
    w11 &= 0x3ffffff;
    /* k = 12 */
    lo = Math.imul(al9, bl3);
    mid = Math.imul(al9, bh3);
    mid = (mid + Math.imul(ah9, bl3)) | 0;
    hi = Math.imul(ah9, bh3);
    lo = (lo + Math.imul(al8, bl4)) | 0;
    mid = (mid + Math.imul(al8, bh4)) | 0;
    mid = (mid + Math.imul(ah8, bl4)) | 0;
    hi = (hi + Math.imul(ah8, bh4)) | 0;
    lo = (lo + Math.imul(al7, bl5)) | 0;
    mid = (mid + Math.imul(al7, bh5)) | 0;
    mid = (mid + Math.imul(ah7, bl5)) | 0;
    hi = (hi + Math.imul(ah7, bh5)) | 0;
    lo = (lo + Math.imul(al6, bl6)) | 0;
    mid = (mid + Math.imul(al6, bh6)) | 0;
    mid = (mid + Math.imul(ah6, bl6)) | 0;
    hi = (hi + Math.imul(ah6, bh6)) | 0;
    lo = (lo + Math.imul(al5, bl7)) | 0;
    mid = (mid + Math.imul(al5, bh7)) | 0;
    mid = (mid + Math.imul(ah5, bl7)) | 0;
    hi = (hi + Math.imul(ah5, bh7)) | 0;
    lo = (lo + Math.imul(al4, bl8)) | 0;
    mid = (mid + Math.imul(al4, bh8)) | 0;
    mid = (mid + Math.imul(ah4, bl8)) | 0;
    hi = (hi + Math.imul(ah4, bh8)) | 0;
    lo = (lo + Math.imul(al3, bl9)) | 0;
    mid = (mid + Math.imul(al3, bh9)) | 0;
    mid = (mid + Math.imul(ah3, bl9)) | 0;
    hi = (hi + Math.imul(ah3, bh9)) | 0;
    var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0;
    w12 &= 0x3ffffff;
    /* k = 13 */
    lo = Math.imul(al9, bl4);
    mid = Math.imul(al9, bh4);
    mid = (mid + Math.imul(ah9, bl4)) | 0;
    hi = Math.imul(ah9, bh4);
    lo = (lo + Math.imul(al8, bl5)) | 0;
    mid = (mid + Math.imul(al8, bh5)) | 0;
    mid = (mid + Math.imul(ah8, bl5)) | 0;
    hi = (hi + Math.imul(ah8, bh5)) | 0;
    lo = (lo + Math.imul(al7, bl6)) | 0;
    mid = (mid + Math.imul(al7, bh6)) | 0;
    mid = (mid + Math.imul(ah7, bl6)) | 0;
    hi = (hi + Math.imul(ah7, bh6)) | 0;
    lo = (lo + Math.imul(al6, bl7)) | 0;
    mid = (mid + Math.imul(al6, bh7)) | 0;
    mid = (mid + Math.imul(ah6, bl7)) | 0;
    hi = (hi + Math.imul(ah6, bh7)) | 0;
    lo = (lo + Math.imul(al5, bl8)) | 0;
    mid = (mid + Math.imul(al5, bh8)) | 0;
    mid = (mid + Math.imul(ah5, bl8)) | 0;
    hi = (hi + Math.imul(ah5, bh8)) | 0;
    lo = (lo + Math.imul(al4, bl9)) | 0;
    mid = (mid + Math.imul(al4, bh9)) | 0;
    mid = (mid + Math.imul(ah4, bl9)) | 0;
    hi = (hi + Math.imul(ah4, bh9)) | 0;
    var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0;
    w13 &= 0x3ffffff;
    /* k = 14 */
    lo = Math.imul(al9, bl5);
    mid = Math.imul(al9, bh5);
    mid = (mid + Math.imul(ah9, bl5)) | 0;
    hi = Math.imul(ah9, bh5);
    lo = (lo + Math.imul(al8, bl6)) | 0;
    mid = (mid + Math.imul(al8, bh6)) | 0;
    mid = (mid + Math.imul(ah8, bl6)) | 0;
    hi = (hi + Math.imul(ah8, bh6)) | 0;
    lo = (lo + Math.imul(al7, bl7)) | 0;
    mid = (mid + Math.imul(al7, bh7)) | 0;
    mid = (mid + Math.imul(ah7, bl7)) | 0;
    hi = (hi + Math.imul(ah7, bh7)) | 0;
    lo = (lo + Math.imul(al6, bl8)) | 0;
    mid = (mid + Math.imul(al6, bh8)) | 0;
    mid = (mid + Math.imul(ah6, bl8)) | 0;
    hi = (hi + Math.imul(ah6, bh8)) | 0;
    lo = (lo + Math.imul(al5, bl9)) | 0;
    mid = (mid + Math.imul(al5, bh9)) | 0;
    mid = (mid + Math.imul(ah5, bl9)) | 0;
    hi = (hi + Math.imul(ah5, bh9)) | 0;
    var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0;
    w14 &= 0x3ffffff;
    /* k = 15 */
    lo = Math.imul(al9, bl6);
    mid = Math.imul(al9, bh6);
    mid = (mid + Math.imul(ah9, bl6)) | 0;
    hi = Math.imul(ah9, bh6);
    lo = (lo + Math.imul(al8, bl7)) | 0;
    mid = (mid + Math.imul(al8, bh7)) | 0;
    mid = (mid + Math.imul(ah8, bl7)) | 0;
    hi = (hi + Math.imul(ah8, bh7)) | 0;
    lo = (lo + Math.imul(al7, bl8)) | 0;
    mid = (mid + Math.imul(al7, bh8)) | 0;
    mid = (mid + Math.imul(ah7, bl8)) | 0;
    hi = (hi + Math.imul(ah7, bh8)) | 0;
    lo = (lo + Math.imul(al6, bl9)) | 0;
    mid = (mid + Math.imul(al6, bh9)) | 0;
    mid = (mid + Math.imul(ah6, bl9)) | 0;
    hi = (hi + Math.imul(ah6, bh9)) | 0;
    var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0;
    w15 &= 0x3ffffff;
    /* k = 16 */
    lo = Math.imul(al9, bl7);
    mid = Math.imul(al9, bh7);
    mid = (mid + Math.imul(ah9, bl7)) | 0;
    hi = Math.imul(ah9, bh7);
    lo = (lo + Math.imul(al8, bl8)) | 0;
    mid = (mid + Math.imul(al8, bh8)) | 0;
    mid = (mid + Math.imul(ah8, bl8)) | 0;
    hi = (hi + Math.imul(ah8, bh8)) | 0;
    lo = (lo + Math.imul(al7, bl9)) | 0;
    mid = (mid + Math.imul(al7, bh9)) | 0;
    mid = (mid + Math.imul(ah7, bl9)) | 0;
    hi = (hi + Math.imul(ah7, bh9)) | 0;
    var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0;
    w16 &= 0x3ffffff;
    /* k = 17 */
    lo = Math.imul(al9, bl8);
    mid = Math.imul(al9, bh8);
    mid = (mid + Math.imul(ah9, bl8)) | 0;
    hi = Math.imul(ah9, bh8);
    lo = (lo + Math.imul(al8, bl9)) | 0;
    mid = (mid + Math.imul(al8, bh9)) | 0;
    mid = (mid + Math.imul(ah8, bl9)) | 0;
    hi = (hi + Math.imul(ah8, bh9)) | 0;
    var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0;
    w17 &= 0x3ffffff;
    /* k = 18 */
    lo = Math.imul(al9, bl9);
    mid = Math.imul(al9, bh9);
    mid = (mid + Math.imul(ah9, bl9)) | 0;
    hi = Math.imul(ah9, bh9);
    var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0;
    w18 &= 0x3ffffff;
    o[0] = w0;
    o[1] = w1;
    o[2] = w2;
    o[3] = w3;
    o[4] = w4;
    o[5] = w5;
    o[6] = w6;
    o[7] = w7;
    o[8] = w8;
    o[9] = w9;
    o[10] = w10;
    o[11] = w11;
    o[12] = w12;
    o[13] = w13;
    o[14] = w14;
    o[15] = w15;
    o[16] = w16;
    o[17] = w17;
    o[18] = w18;
    if (c !== 0) {
      o[19] = c;
      out.length++;
    }
    return out;
  };

  // Polyfill comb
  if (!Math.imul) {
    comb10MulTo = smallMulTo;
  }

  function bigMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    out.length = self.length + num.length;

    var carry = 0;
    var hncarry = 0;
    for (var k = 0; k < out.length - 1; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = hncarry;
      hncarry = 0;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = k - j;
        var a = self.words[i] | 0;
        var b = num.words[j] | 0;
        var r = a * b;

        var lo = r & 0x3ffffff;
        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
        lo = (lo + rword) | 0;
        rword = lo & 0x3ffffff;
        ncarry = (ncarry + (lo >>> 26)) | 0;

        hncarry += ncarry >>> 26;
        ncarry &= 0x3ffffff;
      }
      out.words[k] = rword;
      carry = ncarry;
      ncarry = hncarry;
    }
    if (carry !== 0) {
      out.words[k] = carry;
    } else {
      out.length--;
    }

    return out.strip();
  }

  function jumboMulTo (self, num, out) {
    var fftm = new FFTM();
    return fftm.mulp(self, num, out);
  }

  BN.prototype.mulTo = function mulTo (num, out) {
    var res;
    var len = this.length + num.length;
    if (this.length === 10 && num.length === 10) {
      res = comb10MulTo(this, num, out);
    } else if (len < 63) {
      res = smallMulTo(this, num, out);
    } else if (len < 1024) {
      res = bigMulTo(this, num, out);
    } else {
      res = jumboMulTo(this, num, out);
    }

    return res;
  };

  // Cooley-Tukey algorithm for FFT
  // slightly revisited to rely on looping instead of recursion

  function FFTM (x, y) {
    this.x = x;
    this.y = y;
  }

  FFTM.prototype.makeRBT = function makeRBT (N) {
    var t = new Array(N);
    var l = BN.prototype._countBits(N) - 1;
    for (var i = 0; i < N; i++) {
      t[i] = this.revBin(i, l, N);
    }

    return t;
  };

  // Returns binary-reversed representation of `x`
  FFTM.prototype.revBin = function revBin (x, l, N) {
    if (x === 0 || x === N - 1) return x;

    var rb = 0;
    for (var i = 0; i < l; i++) {
      rb |= (x & 1) << (l - i - 1);
      x >>= 1;
    }

    return rb;
  };

  // Performs "tweedling" phase, therefore 'emulating'
  // behaviour of the recursive algorithm
  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
    for (var i = 0; i < N; i++) {
      rtws[i] = rws[rbt[i]];
      itws[i] = iws[rbt[i]];
    }
  };

  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
    this.permute(rbt, rws, iws, rtws, itws, N);

    for (var s = 1; s < N; s <<= 1) {
      var l = s << 1;

      var rtwdf = Math.cos(2 * Math.PI / l);
      var itwdf = Math.sin(2 * Math.PI / l);

      for (var p = 0; p < N; p += l) {
        var rtwdf_ = rtwdf;
        var itwdf_ = itwdf;

        for (var j = 0; j < s; j++) {
          var re = rtws[p + j];
          var ie = itws[p + j];

          var ro = rtws[p + j + s];
          var io = itws[p + j + s];

          var rx = rtwdf_ * ro - itwdf_ * io;

          io = rtwdf_ * io + itwdf_ * ro;
          ro = rx;

          rtws[p + j] = re + ro;
          itws[p + j] = ie + io;

          rtws[p + j + s] = re - ro;
          itws[p + j + s] = ie - io;

          /* jshint maxdepth : false */
          if (j !== l) {
            rx = rtwdf * rtwdf_ - itwdf * itwdf_;

            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
            rtwdf_ = rx;
          }
        }
      }
    }
  };

  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
    var N = Math.max(m, n) | 1;
    var odd = N & 1;
    var i = 0;
    for (N = N / 2 | 0; N; N = N >>> 1) {
      i++;
    }

    return 1 << i + 1 + odd;
  };

  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
    if (N <= 1) return;

    for (var i = 0; i < N / 2; i++) {
      var t = rws[i];

      rws[i] = rws[N - i - 1];
      rws[N - i - 1] = t;

      t = iws[i];

      iws[i] = -iws[N - i - 1];
      iws[N - i - 1] = -t;
    }
  };

  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
    var carry = 0;
    for (var i = 0; i < N / 2; i++) {
      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
        Math.round(ws[2 * i] / N) +
        carry;

      ws[i] = w & 0x3ffffff;

      if (w < 0x4000000) {
        carry = 0;
      } else {
        carry = w / 0x4000000 | 0;
      }
    }

    return ws;
  };

  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
    var carry = 0;
    for (var i = 0; i < len; i++) {
      carry = carry + (ws[i] | 0);

      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
    }

    // Pad with zeroes
    for (i = 2 * len; i < N; ++i) {
      rws[i] = 0;
    }

    assert(carry === 0);
    assert((carry & ~0x1fff) === 0);
  };

  FFTM.prototype.stub = function stub (N) {
    var ph = new Array(N);
    for (var i = 0; i < N; i++) {
      ph[i] = 0;
    }

    return ph;
  };

  FFTM.prototype.mulp = function mulp (x, y, out) {
    var N = 2 * this.guessLen13b(x.length, y.length);

    var rbt = this.makeRBT(N);

    var _ = this.stub(N);

    var rws = new Array(N);
    var rwst = new Array(N);
    var iwst = new Array(N);

    var nrws = new Array(N);
    var nrwst = new Array(N);
    var niwst = new Array(N);

    var rmws = out.words;
    rmws.length = N;

    this.convert13b(x.words, x.length, rws, N);
    this.convert13b(y.words, y.length, nrws, N);

    this.transform(rws, _, rwst, iwst, N, rbt);
    this.transform(nrws, _, nrwst, niwst, N, rbt);

    for (var i = 0; i < N; i++) {
      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
      rwst[i] = rx;
    }

    this.conjugate(rwst, iwst, N);
    this.transform(rwst, iwst, rmws, _, N, rbt);
    this.conjugate(rmws, _, N);
    this.normalize13b(rmws, N);

    out.negative = x.negative ^ y.negative;
    out.length = x.length + y.length;
    return out.strip();
  };

  // Multiply `this` by `num`
  BN.prototype.mul = function mul (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return this.mulTo(num, out);
  };

  // Multiply employing FFT
  BN.prototype.mulf = function mulf (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return jumboMulTo(this, num, out);
  };

  // In-place Multiplication
  BN.prototype.imul = function imul (num) {
    return this.clone().mulTo(num, this);
  };

  BN.prototype.imuln = function imuln (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);

    // Carry
    var carry = 0;
    for (var i = 0; i < this.length; i++) {
      var w = (this.words[i] | 0) * num;
      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
      carry >>= 26;
      carry += (w / 0x4000000) | 0;
      // NOTE: lo is 27bit maximum
      carry += lo >>> 26;
      this.words[i] = lo & 0x3ffffff;
    }

    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }

    return this;
  };

  BN.prototype.muln = function muln (num) {
    return this.clone().imuln(num);
  };

  // `this` * `this`
  BN.prototype.sqr = function sqr () {
    return this.mul(this);
  };

  // `this` * `this` in-place
  BN.prototype.isqr = function isqr () {
    return this.imul(this.clone());
  };

  // Math.pow(`this`, `num`)
  BN.prototype.pow = function pow (num) {
    var w = toBitArray(num);
    if (w.length === 0) return new BN(1);

    // Skip leading zeroes
    var res = this;
    for (var i = 0; i < w.length; i++, res = res.sqr()) {
      if (w[i] !== 0) break;
    }

    if (++i < w.length) {
      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
        if (w[i] === 0) continue;

        res = res.mul(q);
      }
    }

    return res;
  };

  // Shift-left in-place
  BN.prototype.iushln = function iushln (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;
    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
    var i;

    if (r !== 0) {
      var carry = 0;

      for (i = 0; i < this.length; i++) {
        var newCarry = this.words[i] & carryMask;
        var c = ((this.words[i] | 0) - newCarry) << r;
        this.words[i] = c | carry;
        carry = newCarry >>> (26 - r);
      }

      if (carry) {
        this.words[i] = carry;
        this.length++;
      }
    }

    if (s !== 0) {
      for (i = this.length - 1; i >= 0; i--) {
        this.words[i + s] = this.words[i];
      }

      for (i = 0; i < s; i++) {
        this.words[i] = 0;
      }

      this.length += s;
    }

    return this.strip();
  };

  BN.prototype.ishln = function ishln (bits) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushln(bits);
  };

  // Shift-right in-place
  // NOTE: `hint` is a lowest bit before trailing zeroes
  // NOTE: if `extended` is present - it will be filled with destroyed bits
  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
    assert(typeof bits === 'number' && bits >= 0);
    var h;
    if (hint) {
      h = (hint - (hint % 26)) / 26;
    } else {
      h = 0;
    }

    var r = bits % 26;
    var s = Math.min((bits - r) / 26, this.length);
    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
    var maskedWords = extended;

    h -= s;
    h = Math.max(0, h);

    // Extended mode, copy masked part
    if (maskedWords) {
      for (var i = 0; i < s; i++) {
        maskedWords.words[i] = this.words[i];
      }
      maskedWords.length = s;
    }

    if (s === 0) {
      // No-op, we should not move anything at all
    } else if (this.length > s) {
      this.length -= s;
      for (i = 0; i < this.length; i++) {
        this.words[i] = this.words[i + s];
      }
    } else {
      this.words[0] = 0;
      this.length = 1;
    }

    var carry = 0;
    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
      var word = this.words[i] | 0;
      this.words[i] = (carry << (26 - r)) | (word >>> r);
      carry = word & mask;
    }

    // Push carried bits as a mask
    if (maskedWords && carry !== 0) {
      maskedWords.words[maskedWords.length++] = carry;
    }

    if (this.length === 0) {
      this.words[0] = 0;
      this.length = 1;
    }

    return this.strip();
  };

  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushrn(bits, hint, extended);
  };

  // Shift-left
  BN.prototype.shln = function shln (bits) {
    return this.clone().ishln(bits);
  };

  BN.prototype.ushln = function ushln (bits) {
    return this.clone().iushln(bits);
  };

  // Shift-right
  BN.prototype.shrn = function shrn (bits) {
    return this.clone().ishrn(bits);
  };

  BN.prototype.ushrn = function ushrn (bits) {
    return this.clone().iushrn(bits);
  };

  // Test if n bit is set
  BN.prototype.testn = function testn (bit) {
    assert(typeof bit === 'number' && bit >= 0);
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) return false;

    // Check bit and return
    var w = this.words[s];

    return !!(w & q);
  };

  // Return only lowers bits of number (in-place)
  BN.prototype.imaskn = function imaskn (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;

    assert(this.negative === 0, 'imaskn works only with positive numbers');

    if (this.length <= s) {
      return this;
    }

    if (r !== 0) {
      s++;
    }
    this.length = Math.min(s, this.length);

    if (r !== 0) {
      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
      this.words[this.length - 1] &= mask;
    }

    return this.strip();
  };

  // Return only lowers bits of number
  BN.prototype.maskn = function maskn (bits) {
    return this.clone().imaskn(bits);
  };

  // Add plain number `num` to `this`
  BN.prototype.iaddn = function iaddn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.isubn(-num);

    // Possible sign change
    if (this.negative !== 0) {
      if (this.length === 1 && (this.words[0] | 0) < num) {
        this.words[0] = num - (this.words[0] | 0);
        this.negative = 0;
        return this;
      }

      this.negative = 0;
      this.isubn(num);
      this.negative = 1;
      return this;
    }

    // Add without checks
    return this._iaddn(num);
  };

  BN.prototype._iaddn = function _iaddn (num) {
    this.words[0] += num;

    // Carry
    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
      this.words[i] -= 0x4000000;
      if (i === this.length - 1) {
        this.words[i + 1] = 1;
      } else {
        this.words[i + 1]++;
      }
    }
    this.length = Math.max(this.length, i + 1);

    return this;
  };

  // Subtract plain number `num` from `this`
  BN.prototype.isubn = function isubn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.iaddn(-num);

    if (this.negative !== 0) {
      this.negative = 0;
      this.iaddn(num);
      this.negative = 1;
      return this;
    }

    this.words[0] -= num;

    if (this.length === 1 && this.words[0] < 0) {
      this.words[0] = -this.words[0];
      this.negative = 1;
    } else {
      // Carry
      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
        this.words[i] += 0x4000000;
        this.words[i + 1] -= 1;
      }
    }

    return this.strip();
  };

  BN.prototype.addn = function addn (num) {
    return this.clone().iaddn(num);
  };

  BN.prototype.subn = function subn (num) {
    return this.clone().isubn(num);
  };

  BN.prototype.iabs = function iabs () {
    this.negative = 0;

    return this;
  };

  BN.prototype.abs = function abs () {
    return this.clone().iabs();
  };

  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
    var len = num.length + shift;
    var i;

    this._expand(len);

    var w;
    var carry = 0;
    for (i = 0; i < num.length; i++) {
      w = (this.words[i + shift] | 0) + carry;
      var right = (num.words[i] | 0) * mul;
      w -= right & 0x3ffffff;
      carry = (w >> 26) - ((right / 0x4000000) | 0);
      this.words[i + shift] = w & 0x3ffffff;
    }
    for (; i < this.length - shift; i++) {
      w = (this.words[i + shift] | 0) + carry;
      carry = w >> 26;
      this.words[i + shift] = w & 0x3ffffff;
    }

    if (carry === 0) return this.strip();

    // Subtraction overflow
    assert(carry === -1);
    carry = 0;
    for (i = 0; i < this.length; i++) {
      w = -(this.words[i] | 0) + carry;
      carry = w >> 26;
      this.words[i] = w & 0x3ffffff;
    }
    this.negative = 1;

    return this.strip();
  };

  BN.prototype._wordDiv = function _wordDiv (num, mode) {
    var shift = this.length - num.length;

    var a = this.clone();
    var b = num;

    // Normalize
    var bhi = b.words[b.length - 1] | 0;
    var bhiBits = this._countBits(bhi);
    shift = 26 - bhiBits;
    if (shift !== 0) {
      b = b.ushln(shift);
      a.iushln(shift);
      bhi = b.words[b.length - 1] | 0;
    }

    // Initialize quotient
    var m = a.length - b.length;
    var q;

    if (mode !== 'mod') {
      q = new BN(null);
      q.length = m + 1;
      q.words = new Array(q.length);
      for (var i = 0; i < q.length; i++) {
        q.words[i] = 0;
      }
    }

    var diff = a.clone()._ishlnsubmul(b, 1, m);
    if (diff.negative === 0) {
      a = diff;
      if (q) {
        q.words[m] = 1;
      }
    }

    for (var j = m - 1; j >= 0; j--) {
      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
        (a.words[b.length + j - 1] | 0);

      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
      // (0x7ffffff)
      qj = Math.min((qj / bhi) | 0, 0x3ffffff);

      a._ishlnsubmul(b, qj, j);
      while (a.negative !== 0) {
        qj--;
        a.negative = 0;
        a._ishlnsubmul(b, 1, j);
        if (!a.isZero()) {
          a.negative ^= 1;
        }
      }
      if (q) {
        q.words[j] = qj;
      }
    }
    if (q) {
      q.strip();
    }
    a.strip();

    // Denormalize
    if (mode !== 'div' && shift !== 0) {
      a.iushrn(shift);
    }

    return {
      div: q || null,
      mod: a
    };
  };

  // NOTE: 1) `mode` can be set to `mod` to request mod only,
  //       to `div` to request div only, or be absent to
  //       request both div & mod
  //       2) `positive` is true if unsigned mod is requested
  BN.prototype.divmod = function divmod (num, mode, positive) {
    assert(!num.isZero());

    if (this.isZero()) {
      return {
        div: new BN(0),
        mod: new BN(0)
      };
    }

    var div, mod, res;
    if (this.negative !== 0 && num.negative === 0) {
      res = this.neg().divmod(num, mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.iadd(num);
        }
      }

      return {
        div: div,
        mod: mod
      };
    }

    if (this.negative === 0 && num.negative !== 0) {
      res = this.divmod(num.neg(), mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      return {
        div: div,
        mod: res.mod
      };
    }

    if ((this.negative & num.negative) !== 0) {
      res = this.neg().divmod(num.neg(), mode);

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.isub(num);
        }
      }

      return {
        div: res.div,
        mod: mod
      };
    }

    // Both numbers are positive at this point

    // Strip both numbers to approximate shift value
    if (num.length > this.length || this.cmp(num) < 0) {
      return {
        div: new BN(0),
        mod: this
      };
    }

    // Very short reduction
    if (num.length === 1) {
      if (mode === 'div') {
        return {
          div: this.divn(num.words[0]),
          mod: null
        };
      }

      if (mode === 'mod') {
        return {
          div: null,
          mod: new BN(this.modn(num.words[0]))
        };
      }

      return {
        div: this.divn(num.words[0]),
        mod: new BN(this.modn(num.words[0]))
      };
    }

    return this._wordDiv(num, mode);
  };

  // Find `this` / `num`
  BN.prototype.div = function div (num) {
    return this.divmod(num, 'div', false).div;
  };

  // Find `this` % `num`
  BN.prototype.mod = function mod (num) {
    return this.divmod(num, 'mod', false).mod;
  };

  BN.prototype.umod = function umod (num) {
    return this.divmod(num, 'mod', true).mod;
  };

  // Find Round(`this` / `num`)
  BN.prototype.divRound = function divRound (num) {
    var dm = this.divmod(num);

    // Fast case - exact division
    if (dm.mod.isZero()) return dm.div;

    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;

    var half = num.ushrn(1);
    var r2 = num.andln(1);
    var cmp = mod.cmp(half);

    // Round down
    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;

    // Round up
    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
  };

  BN.prototype.modn = function modn (num) {
    assert(num <= 0x3ffffff);
    var p = (1 << 26) % num;

    var acc = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      acc = (p * acc + (this.words[i] | 0)) % num;
    }

    return acc;
  };

  // In-place division by number
  BN.prototype.idivn = function idivn (num) {
    assert(num <= 0x3ffffff);

    var carry = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var w = (this.words[i] | 0) + carry * 0x4000000;
      this.words[i] = (w / num) | 0;
      carry = w % num;
    }

    return this.strip();
  };

  BN.prototype.divn = function divn (num) {
    return this.clone().idivn(num);
  };

  BN.prototype.egcd = function egcd (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var x = this;
    var y = p.clone();

    if (x.negative !== 0) {
      x = x.umod(p);
    } else {
      x = x.clone();
    }

    // A * x + B * y = x
    var A = new BN(1);
    var B = new BN(0);

    // C * x + D * y = y
    var C = new BN(0);
    var D = new BN(1);

    var g = 0;

    while (x.isEven() && y.isEven()) {
      x.iushrn(1);
      y.iushrn(1);
      ++g;
    }

    var yp = y.clone();
    var xp = x.clone();

    while (!x.isZero()) {
      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        x.iushrn(i);
        while (i-- > 0) {
          if (A.isOdd() || B.isOdd()) {
            A.iadd(yp);
            B.isub(xp);
          }

          A.iushrn(1);
          B.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        y.iushrn(j);
        while (j-- > 0) {
          if (C.isOdd() || D.isOdd()) {
            C.iadd(yp);
            D.isub(xp);
          }

          C.iushrn(1);
          D.iushrn(1);
        }
      }

      if (x.cmp(y) >= 0) {
        x.isub(y);
        A.isub(C);
        B.isub(D);
      } else {
        y.isub(x);
        C.isub(A);
        D.isub(B);
      }
    }

    return {
      a: C,
      b: D,
      gcd: y.iushln(g)
    };
  };

  // This is reduced incarnation of the binary EEA
  // above, designated to invert members of the
  // _prime_ fields F(p) at a maximal speed
  BN.prototype._invmp = function _invmp (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var a = this;
    var b = p.clone();

    if (a.negative !== 0) {
      a = a.umod(p);
    } else {
      a = a.clone();
    }

    var x1 = new BN(1);
    var x2 = new BN(0);

    var delta = b.clone();

    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        a.iushrn(i);
        while (i-- > 0) {
          if (x1.isOdd()) {
            x1.iadd(delta);
          }

          x1.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        b.iushrn(j);
        while (j-- > 0) {
          if (x2.isOdd()) {
            x2.iadd(delta);
          }

          x2.iushrn(1);
        }
      }

      if (a.cmp(b) >= 0) {
        a.isub(b);
        x1.isub(x2);
      } else {
        b.isub(a);
        x2.isub(x1);
      }
    }

    var res;
    if (a.cmpn(1) === 0) {
      res = x1;
    } else {
      res = x2;
    }

    if (res.cmpn(0) < 0) {
      res.iadd(p);
    }

    return res;
  };

  BN.prototype.gcd = function gcd (num) {
    if (this.isZero()) return num.abs();
    if (num.isZero()) return this.abs();

    var a = this.clone();
    var b = num.clone();
    a.negative = 0;
    b.negative = 0;

    // Remove common factor of two
    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
      a.iushrn(1);
      b.iushrn(1);
    }

    do {
      while (a.isEven()) {
        a.iushrn(1);
      }
      while (b.isEven()) {
        b.iushrn(1);
      }

      var r = a.cmp(b);
      if (r < 0) {
        // Swap `a` and `b` to make `a` always bigger than `b`
        var t = a;
        a = b;
        b = t;
      } else if (r === 0 || b.cmpn(1) === 0) {
        break;
      }

      a.isub(b);
    } while (true);

    return b.iushln(shift);
  };

  // Invert number in the field F(num)
  BN.prototype.invm = function invm (num) {
    return this.egcd(num).a.umod(num);
  };

  BN.prototype.isEven = function isEven () {
    return (this.words[0] & 1) === 0;
  };

  BN.prototype.isOdd = function isOdd () {
    return (this.words[0] & 1) === 1;
  };

  // And first word and num
  BN.prototype.andln = function andln (num) {
    return this.words[0] & num;
  };

  // Increment at the bit position in-line
  BN.prototype.bincn = function bincn (bit) {
    assert(typeof bit === 'number');
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) {
      this._expand(s + 1);
      this.words[s] |= q;
      return this;
    }

    // Add bit and propagate, if needed
    var carry = q;
    for (var i = s; carry !== 0 && i < this.length; i++) {
      var w = this.words[i] | 0;
      w += carry;
      carry = w >>> 26;
      w &= 0x3ffffff;
      this.words[i] = w;
    }
    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }
    return this;
  };

  BN.prototype.isZero = function isZero () {
    return this.length === 1 && this.words[0] === 0;
  };

  BN.prototype.cmpn = function cmpn (num) {
    var negative = num < 0;

    if (this.negative !== 0 && !negative) return -1;
    if (this.negative === 0 && negative) return 1;

    this.strip();

    var res;
    if (this.length > 1) {
      res = 1;
    } else {
      if (negative) {
        num = -num;
      }

      assert(num <= 0x3ffffff, 'Number is too big');

      var w = this.words[0] | 0;
      res = w === num ? 0 : w < num ? -1 : 1;
    }
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Compare two numbers and return:
  // 1 - if `this` > `num`
  // 0 - if `this` == `num`
  // -1 - if `this` < `num`
  BN.prototype.cmp = function cmp (num) {
    if (this.negative !== 0 && num.negative === 0) return -1;
    if (this.negative === 0 && num.negative !== 0) return 1;

    var res = this.ucmp(num);
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Unsigned comparison
  BN.prototype.ucmp = function ucmp (num) {
    // At this point both numbers have the same sign
    if (this.length > num.length) return 1;
    if (this.length < num.length) return -1;

    var res = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var a = this.words[i] | 0;
      var b = num.words[i] | 0;

      if (a === b) continue;
      if (a < b) {
        res = -1;
      } else if (a > b) {
        res = 1;
      }
      break;
    }
    return res;
  };

  BN.prototype.gtn = function gtn (num) {
    return this.cmpn(num) === 1;
  };

  BN.prototype.gt = function gt (num) {
    return this.cmp(num) === 1;
  };

  BN.prototype.gten = function gten (num) {
    return this.cmpn(num) >= 0;
  };

  BN.prototype.gte = function gte (num) {
    return this.cmp(num) >= 0;
  };

  BN.prototype.ltn = function ltn (num) {
    return this.cmpn(num) === -1;
  };

  BN.prototype.lt = function lt (num) {
    return this.cmp(num) === -1;
  };

  BN.prototype.lten = function lten (num) {
    return this.cmpn(num) <= 0;
  };

  BN.prototype.lte = function lte (num) {
    return this.cmp(num) <= 0;
  };

  BN.prototype.eqn = function eqn (num) {
    return this.cmpn(num) === 0;
  };

  BN.prototype.eq = function eq (num) {
    return this.cmp(num) === 0;
  };

  //
  // A reduce context, could be using montgomery or something better, depending
  // on the `m` itself.
  //
  BN.red = function red (num) {
    return new Red(num);
  };

  BN.prototype.toRed = function toRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    assert(this.negative === 0, 'red works only with positives');
    return ctx.convertTo(this)._forceRed(ctx);
  };

  BN.prototype.fromRed = function fromRed () {
    assert(this.red, 'fromRed works only with numbers in reduction context');
    return this.red.convertFrom(this);
  };

  BN.prototype._forceRed = function _forceRed (ctx) {
    this.red = ctx;
    return this;
  };

  BN.prototype.forceRed = function forceRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    return this._forceRed(ctx);
  };

  BN.prototype.redAdd = function redAdd (num) {
    assert(this.red, 'redAdd works only with red numbers');
    return this.red.add(this, num);
  };

  BN.prototype.redIAdd = function redIAdd (num) {
    assert(this.red, 'redIAdd works only with red numbers');
    return this.red.iadd(this, num);
  };

  BN.prototype.redSub = function redSub (num) {
    assert(this.red, 'redSub works only with red numbers');
    return this.red.sub(this, num);
  };

  BN.prototype.redISub = function redISub (num) {
    assert(this.red, 'redISub works only with red numbers');
    return this.red.isub(this, num);
  };

  BN.prototype.redShl = function redShl (num) {
    assert(this.red, 'redShl works only with red numbers');
    return this.red.shl(this, num);
  };

  BN.prototype.redMul = function redMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.mul(this, num);
  };

  BN.prototype.redIMul = function redIMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.imul(this, num);
  };

  BN.prototype.redSqr = function redSqr () {
    assert(this.red, 'redSqr works only with red numbers');
    this.red._verify1(this);
    return this.red.sqr(this);
  };

  BN.prototype.redISqr = function redISqr () {
    assert(this.red, 'redISqr works only with red numbers');
    this.red._verify1(this);
    return this.red.isqr(this);
  };

  // Square root over p
  BN.prototype.redSqrt = function redSqrt () {
    assert(this.red, 'redSqrt works only with red numbers');
    this.red._verify1(this);
    return this.red.sqrt(this);
  };

  BN.prototype.redInvm = function redInvm () {
    assert(this.red, 'redInvm works only with red numbers');
    this.red._verify1(this);
    return this.red.invm(this);
  };

  // Return negative clone of `this` % `red modulo`
  BN.prototype.redNeg = function redNeg () {
    assert(this.red, 'redNeg works only with red numbers');
    this.red._verify1(this);
    return this.red.neg(this);
  };

  BN.prototype.redPow = function redPow (num) {
    assert(this.red && !num.red, 'redPow(normalNum)');
    this.red._verify1(this);
    return this.red.pow(this, num);
  };

  // Prime numbers with efficient reduction
  var primes = {
    k256: null,
    p224: null,
    p192: null,
    p25519: null
  };

  // Pseudo-Mersenne prime
  function MPrime (name, p) {
    // P = 2 ^ N - K
    this.name = name;
    this.p = new BN(p, 16);
    this.n = this.p.bitLength();
    this.k = new BN(1).iushln(this.n).isub(this.p);

    this.tmp = this._tmp();
  }

  MPrime.prototype._tmp = function _tmp () {
    var tmp = new BN(null);
    tmp.words = new Array(Math.ceil(this.n / 13));
    return tmp;
  };

  MPrime.prototype.ireduce = function ireduce (num) {
    // Assumes that `num` is less than `P^2`
    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
    var r = num;
    var rlen;

    do {
      this.split(r, this.tmp);
      r = this.imulK(r);
      r = r.iadd(this.tmp);
      rlen = r.bitLength();
    } while (rlen > this.n);

    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
    if (cmp === 0) {
      r.words[0] = 0;
      r.length = 1;
    } else if (cmp > 0) {
      r.isub(this.p);
    } else {
      r.strip();
    }

    return r;
  };

  MPrime.prototype.split = function split (input, out) {
    input.iushrn(this.n, 0, out);
  };

  MPrime.prototype.imulK = function imulK (num) {
    return num.imul(this.k);
  };

  function K256 () {
    MPrime.call(
      this,
      'k256',
      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
  }
  inherits(K256, MPrime);

  K256.prototype.split = function split (input, output) {
    // 256 = 9 * 26 + 22
    var mask = 0x3fffff;

    var outLen = Math.min(input.length, 9);
    for (var i = 0; i < outLen; i++) {
      output.words[i] = input.words[i];
    }
    output.length = outLen;

    if (input.length <= 9) {
      input.words[0] = 0;
      input.length = 1;
      return;
    }

    // Shift by 9 limbs
    var prev = input.words[9];
    output.words[output.length++] = prev & mask;

    for (i = 10; i < input.length; i++) {
      var next = input.words[i] | 0;
      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
      prev = next;
    }
    prev >>>= 22;
    input.words[i - 10] = prev;
    if (prev === 0 && input.length > 10) {
      input.length -= 10;
    } else {
      input.length -= 9;
    }
  };

  K256.prototype.imulK = function imulK (num) {
    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
    num.words[num.length] = 0;
    num.words[num.length + 1] = 0;
    num.length += 2;

    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
    var lo = 0;
    for (var i = 0; i < num.length; i++) {
      var w = num.words[i] | 0;
      lo += w * 0x3d1;
      num.words[i] = lo & 0x3ffffff;
      lo = w * 0x40 + ((lo / 0x4000000) | 0);
    }

    // Fast length reduction
    if (num.words[num.length - 1] === 0) {
      num.length--;
      if (num.words[num.length - 1] === 0) {
        num.length--;
      }
    }
    return num;
  };

  function P224 () {
    MPrime.call(
      this,
      'p224',
      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
  }
  inherits(P224, MPrime);

  function P192 () {
    MPrime.call(
      this,
      'p192',
      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
  }
  inherits(P192, MPrime);

  function P25519 () {
    // 2 ^ 255 - 19
    MPrime.call(
      this,
      '25519',
      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
  }
  inherits(P25519, MPrime);

  P25519.prototype.imulK = function imulK (num) {
    // K = 0x13
    var carry = 0;
    for (var i = 0; i < num.length; i++) {
      var hi = (num.words[i] | 0) * 0x13 + carry;
      var lo = hi & 0x3ffffff;
      hi >>>= 26;

      num.words[i] = lo;
      carry = hi;
    }
    if (carry !== 0) {
      num.words[num.length++] = carry;
    }
    return num;
  };

  // Exported mostly for testing purposes, use plain name instead
  BN._prime = function prime (name) {
    // Cached version of prime
    if (primes[name]) return primes[name];

    var prime;
    if (name === 'k256') {
      prime = new K256();
    } else if (name === 'p224') {
      prime = new P224();
    } else if (name === 'p192') {
      prime = new P192();
    } else if (name === 'p25519') {
      prime = new P25519();
    } else {
      throw new Error('Unknown prime ' + name);
    }
    primes[name] = prime;

    return prime;
  };

  //
  // Base reduction engine
  //
  function Red (m) {
    if (typeof m === 'string') {
      var prime = BN._prime(m);
      this.m = prime.p;
      this.prime = prime;
    } else {
      assert(m.gtn(1), 'modulus must be greater than 1');
      this.m = m;
      this.prime = null;
    }
  }

  Red.prototype._verify1 = function _verify1 (a) {
    assert(a.negative === 0, 'red works only with positives');
    assert(a.red, 'red works only with red numbers');
  };

  Red.prototype._verify2 = function _verify2 (a, b) {
    assert((a.negative | b.negative) === 0, 'red works only with positives');
    assert(a.red && a.red === b.red,
      'red works only with red numbers');
  };

  Red.prototype.imod = function imod (a) {
    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
    return a.umod(this.m)._forceRed(this);
  };

  Red.prototype.neg = function neg (a) {
    if (a.isZero()) {
      return a.clone();
    }

    return this.m.sub(a)._forceRed(this);
  };

  Red.prototype.add = function add (a, b) {
    this._verify2(a, b);

    var res = a.add(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.iadd = function iadd (a, b) {
    this._verify2(a, b);

    var res = a.iadd(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res;
  };

  Red.prototype.sub = function sub (a, b) {
    this._verify2(a, b);

    var res = a.sub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.isub = function isub (a, b) {
    this._verify2(a, b);

    var res = a.isub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res;
  };

  Red.prototype.shl = function shl (a, num) {
    this._verify1(a);
    return this.imod(a.ushln(num));
  };

  Red.prototype.imul = function imul (a, b) {
    this._verify2(a, b);
    return this.imod(a.imul(b));
  };

  Red.prototype.mul = function mul (a, b) {
    this._verify2(a, b);
    return this.imod(a.mul(b));
  };

  Red.prototype.isqr = function isqr (a) {
    return this.imul(a, a.clone());
  };

  Red.prototype.sqr = function sqr (a) {
    return this.mul(a, a);
  };

  Red.prototype.sqrt = function sqrt (a) {
    if (a.isZero()) return a.clone();

    var mod3 = this.m.andln(3);
    assert(mod3 % 2 === 1);

    // Fast case
    if (mod3 === 3) {
      var pow = this.m.add(new BN(1)).iushrn(2);
      return this.pow(a, pow);
    }

    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
    //
    // Find Q and S, that Q * 2 ^ S = (P - 1)
    var q = this.m.subn(1);
    var s = 0;
    while (!q.isZero() && q.andln(1) === 0) {
      s++;
      q.iushrn(1);
    }
    assert(!q.isZero());

    var one = new BN(1).toRed(this);
    var nOne = one.redNeg();

    // Find quadratic non-residue
    // NOTE: Max is such because of generalized Riemann hypothesis.
    var lpow = this.m.subn(1).iushrn(1);
    var z = this.m.bitLength();
    z = new BN(2 * z * z).toRed(this);

    while (this.pow(z, lpow).cmp(nOne) !== 0) {
      z.redIAdd(nOne);
    }

    var c = this.pow(z, q);
    var r = this.pow(a, q.addn(1).iushrn(1));
    var t = this.pow(a, q);
    var m = s;
    while (t.cmp(one) !== 0) {
      var tmp = t;
      for (var i = 0; tmp.cmp(one) !== 0; i++) {
        tmp = tmp.redSqr();
      }
      assert(i < m);
      var b = this.pow(c, new BN(1).iushln(m - i - 1));

      r = r.redMul(b);
      c = b.redSqr();
      t = t.redMul(c);
      m = i;
    }

    return r;
  };

  Red.prototype.invm = function invm (a) {
    var inv = a._invmp(this.m);
    if (inv.negative !== 0) {
      inv.negative = 0;
      return this.imod(inv).redNeg();
    } else {
      return this.imod(inv);
    }
  };

  Red.prototype.pow = function pow (a, num) {
    if (num.isZero()) return new BN(1);
    if (num.cmpn(1) === 0) return a.clone();

    var windowSize = 4;
    var wnd = new Array(1 << windowSize);
    wnd[0] = new BN(1).toRed(this);
    wnd[1] = a;
    for (var i = 2; i < wnd.length; i++) {
      wnd[i] = this.mul(wnd[i - 1], a);
    }

    var res = wnd[0];
    var current = 0;
    var currentLen = 0;
    var start = num.bitLength() % 26;
    if (start === 0) {
      start = 26;
    }

    for (i = num.length - 1; i >= 0; i--) {
      var word = num.words[i];
      for (var j = start - 1; j >= 0; j--) {
        var bit = (word >> j) & 1;
        if (res !== wnd[0]) {
          res = this.sqr(res);
        }

        if (bit === 0 && current === 0) {
          currentLen = 0;
          continue;
        }

        current <<= 1;
        current |= bit;
        currentLen++;
        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;

        res = this.mul(res, wnd[current]);
        currentLen = 0;
        current = 0;
      }
      start = 26;
    }

    return res;
  };

  Red.prototype.convertTo = function convertTo (num) {
    var r = num.umod(this.m);

    return r === num ? r.clone() : r;
  };

  Red.prototype.convertFrom = function convertFrom (num) {
    var res = num.clone();
    res.red = null;
    return res;
  };

  //
  // Montgomery method engine
  //

  BN.mont = function mont (num) {
    return new Mont(num);
  };

  function Mont (m) {
    Red.call(this, m);

    this.shift = this.m.bitLength();
    if (this.shift % 26 !== 0) {
      this.shift += 26 - (this.shift % 26);
    }

    this.r = new BN(1).iushln(this.shift);
    this.r2 = this.imod(this.r.sqr());
    this.rinv = this.r._invmp(this.m);

    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
    this.minv = this.minv.umod(this.r);
    this.minv = this.r.sub(this.minv);
  }
  inherits(Mont, Red);

  Mont.prototype.convertTo = function convertTo (num) {
    return this.imod(num.ushln(this.shift));
  };

  Mont.prototype.convertFrom = function convertFrom (num) {
    var r = this.imod(num.mul(this.rinv));
    r.red = null;
    return r;
  };

  Mont.prototype.imul = function imul (a, b) {
    if (a.isZero() || b.isZero()) {
      a.words[0] = 0;
      a.length = 1;
      return a;
    }

    var t = a.imul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;

    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.mul = function mul (a, b) {
    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);

    var t = a.mul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;
    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.invm = function invm (a) {
    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
    var res = this.imod(a._invmp(this.m).mul(this.r2));
    return res._forceRed(this);
  };
})(typeof module === 'undefined' || module, this);

},{}],33:[function(require,module,exports){
'use strict'

module.exports = boxIntersectWrapper

var pool = require('typedarray-pool')
var sweep = require('./lib/sweep')
var boxIntersectIter = require('./lib/intersect')

function boxEmpty(d, box) {
  for(var j=0; j<d; ++j) {
    if(!(box[j] <= box[j+d])) {
      return true
    }
  }
  return false
}

//Unpack boxes into a flat typed array, remove empty boxes
function convertBoxes(boxes, d, data, ids) {
  var ptr = 0
  var count = 0
  for(var i=0, n=boxes.length; i<n; ++i) {
    var b = boxes[i]
    if(boxEmpty(d, b)) {
      continue
    }
    for(var j=0; j<2*d; ++j) {
      data[ptr++] = b[j]
    }
    ids[count++] = i
  }
  return count
}

//Perform type conversions, check bounds
function boxIntersect(red, blue, visit, full) {
  var n = red.length
  var m = blue.length

  //If either array is empty, then we can skip this whole thing
  if(n <= 0 || m <= 0) {
    return
  }

  //Compute dimension, if it is 0 then we skip
  var d = (red[0].length)>>>1
  if(d <= 0) {
    return
  }

  var retval

  //Convert red boxes
  var redList  = pool.mallocDouble(2*d*n)
  var redIds   = pool.mallocInt32(n)
  n = convertBoxes(red, d, redList, redIds)

  if(n > 0) {
    if(d === 1 && full) {
      //Special case: 1d complete
      sweep.init(n)
      retval = sweep.sweepComplete(
        d, visit, 
        0, n, redList, redIds,
        0, n, redList, redIds)
    } else {

      //Convert blue boxes
      var blueList = pool.mallocDouble(2*d*m)
      var blueIds  = pool.mallocInt32(m)
      m = convertBoxes(blue, d, blueList, blueIds)

      if(m > 0) {
        sweep.init(n+m)

        if(d === 1) {
          //Special case: 1d bipartite
          retval = sweep.sweepBipartite(
            d, visit, 
            0, n, redList,  redIds,
            0, m, blueList, blueIds)
        } else {
          //General case:  d>1
          retval = boxIntersectIter(
            d, visit,    full,
            n, redList,  redIds,
            m, blueList, blueIds)
        }

        pool.free(blueList)
        pool.free(blueIds)
      }
    }

    pool.free(redList)
    pool.free(redIds)
  }

  return retval
}


var RESULT

function appendItem(i,j) {
  RESULT.push([i,j])
}

function intersectFullArray(x) {
  RESULT = []
  boxIntersect(x, x, appendItem, true)
  return RESULT
}

function intersectBipartiteArray(x, y) {
  RESULT = []
  boxIntersect(x, y, appendItem, false)
  return RESULT
}

//User-friendly wrapper, handle full input and no-visitor cases
function boxIntersectWrapper(arg0, arg1, arg2) {
  var result
  switch(arguments.length) {
    case 1:
      return intersectFullArray(arg0)
    case 2:
      if(typeof arg1 === 'function') {
        return boxIntersect(arg0, arg0, arg1, true)
      } else {
        return intersectBipartiteArray(arg0, arg1)
      }
    case 3:
      return boxIntersect(arg0, arg1, arg2, false)
    default:
      throw new Error('box-intersect: Invalid arguments')
  }
}
},{"./lib/intersect":35,"./lib/sweep":39,"typedarray-pool":205}],34:[function(require,module,exports){
'use strict'

var DIMENSION   = 'd'
var AXIS        = 'ax'
var VISIT       = 'vv'
var FLIP        = 'fp'

var ELEM_SIZE   = 'es'

var RED_START   = 'rs'
var RED_END     = 're'
var RED_BOXES   = 'rb'
var RED_INDEX   = 'ri'
var RED_PTR     = 'rp'

var BLUE_START  = 'bs'
var BLUE_END    = 'be'
var BLUE_BOXES  = 'bb'
var BLUE_INDEX  = 'bi'
var BLUE_PTR    = 'bp'

var RETVAL      = 'rv'

var INNER_LABEL = 'Q'

var ARGS = [
  DIMENSION,
  AXIS,
  VISIT,
  RED_START,
  RED_END,
  RED_BOXES,
  RED_INDEX,
  BLUE_START,
  BLUE_END,
  BLUE_BOXES,
  BLUE_INDEX
]

function generateBruteForce(redMajor, flip, full) {
  var funcName = 'bruteForce' + 
    (redMajor ? 'Red' : 'Blue') + 
    (flip ? 'Flip' : '') +
    (full ? 'Full' : '')

  var code = ['function ', funcName, '(', ARGS.join(), '){',
    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']

  var redLoop = 
    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
        'i<' + RED_END +';' +
        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
            'xi=' + RED_INDEX + '[i];'

  var blueLoop = 
    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
        'j<' + BLUE_END + ';' +
        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
            'yi=' + BLUE_INDEX + '[j];'

  if(redMajor) {
    code.push(redLoop, INNER_LABEL, ':', blueLoop)
  } else {
    code.push(blueLoop, INNER_LABEL, ':', redLoop)
  }

  if(full) {
    code.push('if(y1<x0||x1<y0)continue;')
  } else if(flip) {
    code.push('if(y0<=x0||x1<y0)continue;')
  } else {
    code.push('if(y0<x0||x1<y0)continue;')
  }

  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
      'var ' + RETVAL + '=' + VISIT + '(')

  if(flip) {
    code.push('yi,xi')
  } else {
    code.push('xi,yi')
  }

  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')

  return {
    name: funcName, 
    code: code.join('')
  }
}

function bruteForcePlanner(full) {
  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
  var prefix = []
  var fargs = ARGS.slice()
  if(!full) {
    fargs.splice(3, 0, FLIP)
  }

  var code = ['function ' + funcName + '(' + fargs.join() + '){']

  function invoke(redMajor, flip) {
    var res = generateBruteForce(redMajor, flip, full)
    prefix.push(res.code)
    code.push('return ' + res.name + '(' + ARGS.join() + ');')
  }

  code.push('if(' + RED_END + '-' + RED_START + '>' +
                    BLUE_END + '-' + BLUE_START + '){')

  if(full) {
    invoke(true, false)
    code.push('}else{')
    invoke(false, false)
  } else {
    code.push('if(' + FLIP + '){')
    invoke(true, true)
    code.push('}else{')
    invoke(true, false)
    code.push('}}else{if(' + FLIP + '){')
    invoke(false, true)
    code.push('}else{')
    invoke(false, false)
    code.push('}')
  }
  code.push('}}return ' + funcName)

  var codeStr = prefix.join('') + code.join('')
  var proc = new Function(codeStr)
  return proc()
}


exports.partial = bruteForcePlanner(false)
exports.full    = bruteForcePlanner(true)
},{}],35:[function(require,module,exports){
'use strict'

module.exports = boxIntersectIter

var pool = require('typedarray-pool')
var bits = require('bit-twiddle')
var bruteForce = require('./brute')
var bruteForcePartial = bruteForce.partial
var bruteForceFull = bruteForce.full
var sweep = require('./sweep')
var findMedian = require('./median')
var genPartition = require('./partition')

//Twiddle parameters
var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
var SCAN_COMPLETE_CUTOFF  = (1<<22)  

//Partition functions
var partitionInteriorContainsInterval = genPartition(
  '!(lo>=p0)&&!(p1>=hi)', 
  ['p0', 'p1'])

var partitionStartEqual = genPartition(
  'lo===p0',
  ['p0'])

var partitionStartLessThan = genPartition(
  'lo<p0',
  ['p0'])

var partitionEndLessThanEqual = genPartition(
  'hi<=p0',
  ['p0'])

var partitionContainsPoint = genPartition(
  'lo<=p0&&p0<=hi',
  ['p0'])

var partitionContainsPointProper = genPartition(
  'lo<p0&&p0<=hi',
  ['p0'])

//Frame size for iterative loop
var IFRAME_SIZE = 6
var DFRAME_SIZE = 2

//Data for box statck
var INIT_CAPACITY = 1024
var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)

//Initialize iterative loop queue
function iterInit(d, count) {
  var levels = (8 * bits.log2(count+1) * (d+1))|0
  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
  if(BOX_ISTACK.length < maxInts) {
    pool.free(BOX_ISTACK)
    BOX_ISTACK = pool.mallocInt32(maxInts)
  }
  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
  if(BOX_DSTACK < maxDoubles) {
    pool.free(BOX_DSTACK)
    BOX_DSTACK = pool.mallocDouble(maxDoubles)
  }
}

//Append item to queue
function iterPush(ptr,
  axis, 
  redStart, redEnd, 
  blueStart, blueEnd, 
  state, 
  lo, hi) {

  var iptr = IFRAME_SIZE * ptr
  BOX_ISTACK[iptr]   = axis
  BOX_ISTACK[iptr+1] = redStart
  BOX_ISTACK[iptr+2] = redEnd
  BOX_ISTACK[iptr+3] = blueStart
  BOX_ISTACK[iptr+4] = blueEnd
  BOX_ISTACK[iptr+5] = state

  var dptr = DFRAME_SIZE * ptr
  BOX_DSTACK[dptr]   = lo
  BOX_DSTACK[dptr+1] = hi
}

//Special case:  Intersect single point with list of intervals
function onePointPartial(
  d, axis, visit, flip,
  redStart, redEnd, red, redIndex,
  blueOffset, blue, blueId) {

  var elemSize = 2 * d
  var bluePtr  = blueOffset * elemSize
  var blueX    = blue[bluePtr + axis]

red_loop:
  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
    var r0 = red[redPtr+axis]
    var r1 = red[redPtr+axis+d]
    if(blueX < r0 || r1 < blueX) {
      continue
    }
    if(flip && blueX === r0) {
      continue
    }
    var redId = redIndex[i]
    for(var j=axis+1; j<d; ++j) {
      var r0 = red[redPtr+j]
      var r1 = red[redPtr+j+d]
      var b0 = blue[bluePtr+j]
      var b1 = blue[bluePtr+j+d]
      if(r1 < b0 || b1 < r0) {
        continue red_loop
      }
    }
    var retval
    if(flip) {
      retval = visit(blueId, redId)
    } else {
      retval = visit(redId, blueId)
    }
    if(retval !== void 0) {
      return retval
    }
  }
}

//Special case:  Intersect one point with list of intervals
function onePointFull(
  d, axis, visit,
  redStart, redEnd, red, redIndex,
  blueOffset, blue, blueId) {

  var elemSize = 2 * d
  var bluePtr  = blueOffset * elemSize
  var blueX    = blue[bluePtr + axis]

red_loop:
  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
    var redId = redIndex[i]
    if(redId === blueId) {
      continue
    }
    var r0 = red[redPtr+axis]
    var r1 = red[redPtr+axis+d]
    if(blueX < r0 || r1 < blueX) {
      continue
    }
    for(var j=axis+1; j<d; ++j) {
      var r0 = red[redPtr+j]
      var r1 = red[redPtr+j+d]
      var b0 = blue[bluePtr+j]
      var b1 = blue[bluePtr+j+d]
      if(r1 < b0 || b1 < r0) {
        continue red_loop
      }
    }
    var retval = visit(redId, blueId)
    if(retval !== void 0) {
      return retval
    }
  }
}

//The main box intersection routine
function boxIntersectIter(
  d, visit, initFull,
  xSize, xBoxes, xIndex,
  ySize, yBoxes, yIndex) {

  //Reserve memory for stack
  iterInit(d, xSize + ySize)

  var top  = 0
  var elemSize = 2 * d
  var retval

  iterPush(top++,
      0,
      0, xSize,
      0, ySize,
      initFull ? 16 : 0, 
      -Infinity, Infinity)
  if(!initFull) {
    iterPush(top++,
      0,
      0, ySize,
      0, xSize,
      1, 
      -Infinity, Infinity)
  }

  while(top > 0) {
    top  -= 1

    var iptr = top * IFRAME_SIZE
    var axis      = BOX_ISTACK[iptr]
    var redStart  = BOX_ISTACK[iptr+1]
    var redEnd    = BOX_ISTACK[iptr+2]
    var blueStart = BOX_ISTACK[iptr+3]
    var blueEnd   = BOX_ISTACK[iptr+4]
    var state     = BOX_ISTACK[iptr+5]

    var dptr = top * DFRAME_SIZE
    var lo        = BOX_DSTACK[dptr]
    var hi        = BOX_DSTACK[dptr+1]

    //Unpack state info
    var flip      = (state & 1)
    var full      = !!(state & 16)

    //Unpack indices
    var red       = xBoxes
    var redIndex  = xIndex
    var blue      = yBoxes
    var blueIndex = yIndex
    if(flip) {
      red         = yBoxes
      redIndex    = yIndex
      blue        = xBoxes
      blueIndex   = xIndex
    }

    if(state & 2) {
      redEnd = partitionStartLessThan(
        d, axis,
        redStart, redEnd, red, redIndex,
        hi)
      if(redStart >= redEnd) {
        continue
      }
    }
    if(state & 4) {
      redStart = partitionEndLessThanEqual(
        d, axis,
        redStart, redEnd, red, redIndex,
        lo)
      if(redStart >= redEnd) {
        continue
      }
    }
    
    var redCount  = redEnd  - redStart
    var blueCount = blueEnd - blueStart

    if(full) {
      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
        retval = sweep.scanComplete(
          d, axis, visit, 
          redStart, redEnd, red, redIndex,
          blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
        continue
      }
    } else {
      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
        //If input small, then use brute force
        retval = bruteForcePartial(
            d, axis, visit, flip,
            redStart,  redEnd,  red,  redIndex,
            blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
        continue
      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
        //If input medium sized, then use sweep and prune
        retval = sweep.scanBipartite(
          d, axis, visit, flip, 
          redStart, redEnd, red, redIndex,
          blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
        continue
      }
    }
    
    //First, find all red intervals whose interior contains (lo,hi)
    var red0 = partitionInteriorContainsInterval(
      d, axis, 
      redStart, redEnd, red, redIndex,
      lo, hi)

    //Lower dimensional case
    if(redStart < red0) {

      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
        //Special case for small inputs: use brute force
        retval = bruteForceFull(
          d, axis+1, visit,
          redStart, red0, red, redIndex,
          blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
      } else if(axis === d-2) {
        if(flip) {
          retval = sweep.sweepBipartite(
            d, visit,
            blueStart, blueEnd, blue, blueIndex,
            redStart, red0, red, redIndex)
        } else {
          retval = sweep.sweepBipartite(
            d, visit,
            redStart, red0, red, redIndex,
            blueStart, blueEnd, blue, blueIndex)
        }
        if(retval !== void 0) {
          return retval
        }
      } else {
        iterPush(top++,
          axis+1,
          redStart, red0,
          blueStart, blueEnd,
          flip,
          -Infinity, Infinity)
        iterPush(top++,
          axis+1,
          blueStart, blueEnd,
          redStart, red0,
          flip^1,
          -Infinity, Infinity)
      }
    }

    //Divide and conquer phase
    if(red0 < redEnd) {

      //Cut blue into 3 parts:
      //
      //  Points < mid point
      //  Points = mid point
      //  Points > mid point
      //
      var blue0 = findMedian(
        d, axis, 
        blueStart, blueEnd, blue, blueIndex)
      var mid = blue[elemSize * blue0 + axis]
      var blue1 = partitionStartEqual(
        d, axis,
        blue0, blueEnd, blue, blueIndex,
        mid)

      //Right case
      if(blue1 < blueEnd) {
        iterPush(top++,
          axis,
          red0, redEnd,
          blue1, blueEnd,
          (flip|4) + (full ? 16 : 0),
          mid, hi)
      }

      //Left case
      if(blueStart < blue0) {
        iterPush(top++,
          axis,
          red0, redEnd,
          blueStart, blue0,
          (flip|2) + (full ? 16 : 0),
          lo, mid)
      }

      //Center case (the hard part)
      if(blue0 + 1 === blue1) {
        //Optimization: Range with exactly 1 point, use a brute force scan
        if(full) {
          retval = onePointFull(
            d, axis, visit,
            red0, redEnd, red, redIndex,
            blue0, blue, blueIndex[blue0])
        } else {
          retval = onePointPartial(
            d, axis, visit, flip,
            red0, redEnd, red, redIndex,
            blue0, blue, blueIndex[blue0])
        }
        if(retval !== void 0) {
          return retval
        }
      } else if(blue0 < blue1) {
        var red1
        if(full) {
          //If full intersection, need to handle special case
          red1 = partitionContainsPoint(
            d, axis,
            red0, redEnd, red, redIndex,
            mid)
          if(red0 < red1) {
            var redX = partitionStartEqual(
              d, axis,
              red0, red1, red, redIndex,
              mid)
            if(axis === d-2) {
              //Degenerate sweep intersection:
              //  [red0, redX] with [blue0, blue1]
              if(red0 < redX) {
                retval = sweep.sweepComplete(
                  d, visit,
                  red0, redX, red, redIndex,
                  blue0, blue1, blue, blueIndex)
                if(retval !== void 0) {
                  return retval
                }
              }

              //Normal sweep intersection:
              //  [redX, red1] with [blue0, blue1]
              if(redX < red1) {
                retval = sweep.sweepBipartite(
                  d, visit,
                  redX, red1, red, redIndex,
                  blue0, blue1, blue, blueIndex)
                if(retval !== void 0) {
                  return retval
                }
              }
            } else {
              if(red0 < redX) {
                iterPush(top++,
                  axis+1,
                  red0, redX,
                  blue0, blue1,
                  16,
                  -Infinity, Infinity)
              }
              if(redX < red1) {
                iterPush(top++,
                  axis+1,
                  redX, red1,
                  blue0, blue1,
                  0,
                  -Infinity, Infinity)
                iterPush(top++,
                  axis+1,
                  blue0, blue1,
                  redX, red1,
                  1,
                  -Infinity, Infinity)
              }
            }
          }
        } else {
          if(flip) {
            red1 = partitionContainsPointProper(
              d, axis,
              red0, redEnd, red, redIndex,
              mid)
          } else {
            red1 = partitionContainsPoint(
              d, axis,
              red0, redEnd, red, redIndex,
              mid)
          }
          if(red0 < red1) {
            if(axis === d-2) {
              if(flip) {
                retval = sweep.sweepBipartite(
                  d, visit,
                  blue0, blue1, blue, blueIndex,
                  red0, red1, red, redIndex)
              } else {
                retval = sweep.sweepBipartite(
                  d, visit,
                  red0, red1, red, redIndex,
                  blue0, blue1, blue, blueIndex)
              }
            } else {
              iterPush(top++,
                axis+1,
                red0, red1,
                blue0, blue1,
                flip,
                -Infinity, Infinity)
              iterPush(top++,
                axis+1,
                blue0, blue1,
                red0, red1,
                flip^1,
                -Infinity, Infinity)
            }
          }
        }
      }
    }
  }
}
},{"./brute":34,"./median":36,"./partition":37,"./sweep":39,"bit-twiddle":31,"typedarray-pool":205}],36:[function(require,module,exports){
'use strict'

module.exports = findMedian

var genPartition = require('./partition')

var partitionStartLessThan = genPartition('lo<p0', ['p0'])

var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian

//Base case for median finding:  Use insertion sort
function insertionSort(d, axis, start, end, boxes, ids) {
  var elemSize = 2 * d
  var boxPtr = elemSize * (start+1) + axis
  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
    var x = boxes[boxPtr]
    for(var j=i, ptr=elemSize*(i-1); 
        j>start && boxes[ptr+axis] > x; 
        --j, ptr-=elemSize) {
      //Swap
      var aPtr = ptr
      var bPtr = ptr+elemSize
      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
        var y = boxes[aPtr]
        boxes[aPtr] = boxes[bPtr]
        boxes[bPtr] = y
      }
      var tmp = ids[j]
      ids[j] = ids[j-1]
      ids[j-1] = tmp
    }
  }
}

//Find median using quick select algorithm
//  takes O(n) time with high probability
function findMedian(d, axis, start, end, boxes, ids) {
  if(end <= start+1) {
    return start
  }

  var lo       = start
  var hi       = end
  var mid      = ((end + start) >>> 1)
  var elemSize = 2*d
  var pivot    = mid
  var value    = boxes[elemSize*mid+axis]
  
  while(lo < hi) {
    if(hi - lo < PARTITION_THRESHOLD) {
      insertionSort(d, axis, lo, hi, boxes, ids)
      value = boxes[elemSize*mid+axis]
      break
    }
    
    //Select pivot using median-of-3
    var count  = hi - lo
    var pivot0 = (Math.random()*count+lo)|0
    var value0 = boxes[elemSize*pivot0 + axis]
    var pivot1 = (Math.random()*count+lo)|0
    var value1 = boxes[elemSize*pivot1 + axis]
    var pivot2 = (Math.random()*count+lo)|0
    var value2 = boxes[elemSize*pivot2 + axis]
    if(value0 <= value1) {
      if(value2 >= value1) {
        pivot = pivot1
        value = value1
      } else if(value0 >= value2) {
        pivot = pivot0
        value = value0
      } else {
        pivot = pivot2
        value = value2
      }
    } else {
      if(value1 >= value2) {
        pivot = pivot1
        value = value1
      } else if(value2 >= value0) {
        pivot = pivot0
        value = value0
      } else {
        pivot = pivot2
        value = value2
      }
    }

    //Swap pivot to end of array
    var aPtr = elemSize * (hi-1)
    var bPtr = elemSize * pivot
    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
      var x = boxes[aPtr]
      boxes[aPtr] = boxes[bPtr]
      boxes[bPtr] = x
    }
    var y = ids[hi-1]
    ids[hi-1] = ids[pivot]
    ids[pivot] = y

    //Partition using pivot
    pivot = partitionStartLessThan(
      d, axis, 
      lo, hi-1, boxes, ids,
      value)

    //Swap pivot back
    var aPtr = elemSize * (hi-1)
    var bPtr = elemSize * pivot
    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
      var x = boxes[aPtr]
      boxes[aPtr] = boxes[bPtr]
      boxes[bPtr] = x
    }
    var y = ids[hi-1]
    ids[hi-1] = ids[pivot]
    ids[pivot] = y

    //Swap pivot to last pivot
    if(mid < pivot) {
      hi = pivot-1
      while(lo < hi && 
        boxes[elemSize*(hi-1)+axis] === value) {
        hi -= 1
      }
      hi += 1
    } else if(pivot < mid) {
      lo = pivot + 1
      while(lo < hi &&
        boxes[elemSize*lo+axis] === value) {
        lo += 1
      }
    } else {
      break
    }
  }

  //Make sure pivot is at start
  return partitionStartLessThan(
    d, axis, 
    start, mid, boxes, ids,
    boxes[elemSize*mid+axis])
}
},{"./partition":37}],37:[function(require,module,exports){
'use strict'

module.exports = genPartition

var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'

function genPartition(predicate, args) {
  var fargs ='abcdef'.split('').concat(args)
  var reads = []
  if(predicate.indexOf('lo') >= 0) {
    reads.push('lo=e[k+n]')
  }
  if(predicate.indexOf('hi') >= 0) {
    reads.push('hi=e[k+o]')
  }
  fargs.push(
    code.replace('_', reads.join())
        .replace('$', predicate))
  return Function.apply(void 0, fargs)
}
},{}],38:[function(require,module,exports){
'use strict';

//This code is extracted from ndarray-sort
//It is inlined here as a temporary workaround

module.exports = wrapper;

var INSERT_SORT_CUTOFF = 32

function wrapper(data, n0) {
  if (n0 <= 4*INSERT_SORT_CUTOFF) {
    insertionSort(0, n0 - 1, data);
  } else {
    quickSort(0, n0 - 1, data);
  }
}

function insertionSort(left, right, data) {
  var ptr = 2*(left+1)
  for(var i=left+1; i<=right; ++i) {
    var a = data[ptr++]
    var b = data[ptr++]
    var j = i
    var jptr = ptr-2
    while(j-- > left) {
      var x = data[jptr-2]
      var y = data[jptr-1]
      if(x < a) {
        break
      } else if(x === a && y < b) {
        break
      }
      data[jptr]   = x
      data[jptr+1] = y
      jptr -= 2
    }
    data[jptr]   = a
    data[jptr+1] = b
  }
}

function swap(i, j, data) {
  i *= 2
  j *= 2
  var x = data[i]
  var y = data[i+1]
  data[i] = data[j]
  data[i+1] = data[j+1]
  data[j] = x
  data[j+1] = y
}

function move(i, j, data) {
  i *= 2
  j *= 2
  data[i] = data[j]
  data[i+1] = data[j+1]
}

function rotate(i, j, k, data) {
  i *= 2
  j *= 2
  k *= 2
  var x = data[i]
  var y = data[i+1]
  data[i] = data[j]
  data[i+1] = data[j+1]
  data[j] = data[k]
  data[j+1] = data[k+1]
  data[k] = x
  data[k+1] = y
}

function shufflePivot(i, j, px, py, data) {
  i *= 2
  j *= 2
  data[i] = data[j]
  data[j] = px
  data[i+1] = data[j+1]
  data[j+1] = py
}

function compare(i, j, data) {
  i *= 2
  j *= 2
  var x = data[i],
      y = data[j]
  if(x < y) {
    return false
  } else if(x === y) {
    return data[i+1] > data[j+1]
  }
  return true
}

function comparePivot(i, y, b, data) {
  i *= 2
  var x = data[i]
  if(x < y) {
    return true
  } else if(x === y) {
    return data[i+1] < b
  }
  return false
}

function quickSort(left, right, data) {
  var sixth = (right - left + 1) / 6 | 0, 
      index1 = left + sixth, 
      index5 = right - sixth, 
      index3 = left + right >> 1, 
      index2 = index3 - sixth, 
      index4 = index3 + sixth, 
      el1 = index1, 
      el2 = index2, 
      el3 = index3, 
      el4 = index4, 
      el5 = index5, 
      less = left + 1, 
      great = right - 1, 
      tmp = 0
  if(compare(el1, el2, data)) {
    tmp = el1
    el1 = el2
    el2 = tmp
  }
  if(compare(el4, el5, data)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }
  if(compare(el1, el3, data)) {
    tmp = el1
    el1 = el3
    el3 = tmp
  }
  if(compare(el2, el3, data)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el1, el4, data)) {
    tmp = el1
    el1 = el4
    el4 = tmp
  }
  if(compare(el3, el4, data)) {
    tmp = el3
    el3 = el4
    el4 = tmp
  }
  if(compare(el2, el5, data)) {
    tmp = el2
    el2 = el5
    el5 = tmp
  }
  if(compare(el2, el3, data)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el4, el5, data)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }

  var pivot1X = data[2*el2]
  var pivot1Y = data[2*el2+1]
  var pivot2X = data[2*el4]
  var pivot2Y = data[2*el4+1]

  var ptr0 = 2 * el1;
  var ptr2 = 2 * el3;
  var ptr4 = 2 * el5;
  var ptr5 = 2 * index1;
  var ptr6 = 2 * index3;
  var ptr7 = 2 * index5;
  for (var i1 = 0; i1 < 2; ++i1) {
    var x = data[ptr0+i1];
    var y = data[ptr2+i1];
    var z = data[ptr4+i1];
    data[ptr5+i1] = x;
    data[ptr6+i1] = y;
    data[ptr7+i1] = z;
  }

  move(index2, left, data)
  move(index4, right, data)
  for (var k = less; k <= great; ++k) {
    if (comparePivot(k, pivot1X, pivot1Y, data)) {
      if (k !== less) {
        swap(k, less, data)
      }
      ++less;
    } else {
      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
        while (true) {
          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
            if (--great < k) {
              break;
            }
            continue;
          } else {
            if (comparePivot(great, pivot1X, pivot1Y, data)) {
              rotate(k, less, great, data)
              ++less;
              --great;
            } else {
              swap(k, great, data)
              --great;
            }
            break;
          }
        }
      }
    }
  }
  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
    insertionSort(left, less - 2, data);
  } else {
    quickSort(left, less - 2, data);
  }
  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
    insertionSort(great + 2, right, data);
  } else {
    quickSort(great + 2, right, data);
  }
  if (great - less <= INSERT_SORT_CUTOFF) {
    insertionSort(less, great, data);
  } else {
    quickSort(less, great, data);
  }
}
},{}],39:[function(require,module,exports){
'use strict'

module.exports = {
  init:           sqInit,
  sweepBipartite: sweepBipartite,
  sweepComplete:  sweepComplete,
  scanBipartite:  scanBipartite,
  scanComplete:   scanComplete
}

var pool  = require('typedarray-pool')
var bits  = require('bit-twiddle')
var isort = require('./sort')

//Flag for blue
var BLUE_FLAG = (1<<28)

//1D sweep event queue stuff (use pool to save space)
var INIT_CAPACITY      = 1024
var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)

//Reserves memory for the 1D sweep data structures
function sqInit(count) {
  var rcount = bits.nextPow2(count)
  if(RED_SWEEP_QUEUE.length < rcount) {
    pool.free(RED_SWEEP_QUEUE)
    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
  }
  if(RED_SWEEP_INDEX.length < rcount) {
    pool.free(RED_SWEEP_INDEX)
    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
  }
  if(BLUE_SWEEP_QUEUE.length < rcount) {
    pool.free(BLUE_SWEEP_QUEUE)
    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
  }
  if(BLUE_SWEEP_INDEX.length < rcount) {
    pool.free(BLUE_SWEEP_INDEX)
    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
  }
  if(COMMON_SWEEP_QUEUE.length < rcount) {
    pool.free(COMMON_SWEEP_QUEUE)
    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
  }
  if(COMMON_SWEEP_INDEX.length < rcount) {
    pool.free(COMMON_SWEEP_INDEX)
    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
  }
  var eventLength = 8 * rcount
  if(SWEEP_EVENTS.length < eventLength) {
    pool.free(SWEEP_EVENTS)
    SWEEP_EVENTS = pool.mallocDouble(eventLength)
  }
}

//Remove an item from the active queue in O(1)
function sqPop(queue, index, count, item) {
  var idx = index[item]
  var top = queue[count-1]
  queue[idx] = top
  index[top] = idx
}

//Insert an item into the active queue in O(1)
function sqPush(queue, index, count, item) {
  queue[count] = item
  index[item]  = count
}

//Recursion base case: use 1D sweep algorithm
function sweepBipartite(
    d, visit,
    redStart,  redEnd, red, redIndex,
    blueStart, blueEnd, blue, blueIndex) {

  //store events as pairs [coordinate, idx]
  //
  //  red create:  -(idx+1)
  //  red destroy: idx
  //  blue create: -(idx+BLUE_FLAG)
  //  blue destroy: idx+BLUE_FLAG
  //
  var ptr      = 0
  var elemSize = 2*d
  var istart   = d-1
  var iend     = elemSize-1

  for(var i=redStart; i<redEnd; ++i) {
    var idx = redIndex[i]
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -(idx+1)
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }

  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = blueIndex[i]+BLUE_FLAG
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive  = 0
  var blueActive = 0
  for(var i=0; i<n; ++i) {
    var e = SWEEP_EVENTS[2*i+1]|0
    if(e >= BLUE_FLAG) {
      //blue destroy event
      e = (e-BLUE_FLAG)|0
      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
    } else if(e >= 0) {
      //red destroy event
      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
    } else if(e <= -BLUE_FLAG) {
      //blue create event
      e = (-e-BLUE_FLAG)|0
      for(var j=0; j<redActive; ++j) {
        var retval = visit(RED_SWEEP_QUEUE[j], e)
        if(retval !== void 0) {
          return retval
        }
      }
      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
    } else {
      //red create event
      e = (-e-1)|0
      for(var j=0; j<blueActive; ++j) {
        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
        if(retval !== void 0) {
          return retval
        }
      }
      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
    }
  }
}

//Complete sweep
function sweepComplete(d, visit, 
  redStart, redEnd, red, redIndex,
  blueStart, blueEnd, blue, blueIndex) {

  var ptr      = 0
  var elemSize = 2*d
  var istart   = d-1
  var iend     = elemSize-1

  for(var i=redStart; i<redEnd; ++i) {
    var idx = (redIndex[i]+1)<<1
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }

  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = (blueIndex[i]+1)<<1
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = (-idx)|1
    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
    SWEEP_EVENTS[ptr++] = idx|1
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive    = 0
  var blueActive   = 0
  var commonActive = 0
  for(var i=0; i<n; ++i) {
    var e     = SWEEP_EVENTS[2*i+1]|0
    var color = e&1
    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
      color = 2
      i += 1
    }
    
    if(e < 0) {
      //Create event
      var id = -(e>>1) - 1

      //Intersect with common
      for(var j=0; j<commonActive; ++j) {
        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
        if(retval !== void 0) {
          return retval
        }
      }

      if(color !== 0) {
        //Intersect with red
        for(var j=0; j<redActive; ++j) {
          var retval = visit(RED_SWEEP_QUEUE[j], id)
          if(retval !== void 0) {
            return retval
          }
        }
      }

      if(color !== 1) {
        //Intersect with blue
        for(var j=0; j<blueActive; ++j) {
          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
          if(retval !== void 0) {
            return retval
          }
        }
      }

      if(color === 0) {
        //Red
        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
      } else if(color === 1) {
        //Blue
        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
      } else if(color === 2) {
        //Both
        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
      }
    } else {
      //Destroy event
      var id = (e>>1) - 1
      if(color === 0) {
        //Red
        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
      } else if(color === 1) {
        //Blue
        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
      } else if(color === 2) {
        //Both
        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
      }
    }
  }
}

//Sweep and prune/scanline algorithm:
//  Scan along axis, detect intersections
//  Brute force all boxes along axis
function scanBipartite(
  d, axis, visit, flip,
  redStart,  redEnd, red, redIndex,
  blueStart, blueEnd, blue, blueIndex) {
  
  var ptr      = 0
  var elemSize = 2*d
  var istart   = axis
  var iend     = axis+d

  var redShift  = 1
  var blueShift = 1
  if(flip) {
    blueShift = BLUE_FLAG
  } else {
    redShift  = BLUE_FLAG
  }

  for(var i=redStart; i<redEnd; ++i) {
    var idx = i + redShift
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }
  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = i + blueShift
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive    = 0
  for(var i=0; i<n; ++i) {
    var e = SWEEP_EVENTS[2*i+1]|0
    if(e < 0) {
      var idx   = -e
      var isRed = false
      if(idx >= BLUE_FLAG) {
        isRed = !flip
        idx -= BLUE_FLAG 
      } else {
        isRed = !!flip
        idx -= 1
      }
      if(isRed) {
        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
      } else {
        var blueId  = blueIndex[idx]
        var bluePtr = elemSize * idx
        
        var b0 = blue[bluePtr+axis+1]
        var b1 = blue[bluePtr+axis+1+d]

red_loop:
        for(var j=0; j<redActive; ++j) {
          var oidx   = RED_SWEEP_QUEUE[j]
          var redPtr = elemSize * oidx

          if(b1 < red[redPtr+axis+1] || 
             red[redPtr+axis+1+d] < b0) {
            continue
          }

          for(var k=axis+2; k<d; ++k) {
            if(blue[bluePtr + k + d] < red[redPtr + k] || 
               red[redPtr + k + d] < blue[bluePtr + k]) {
              continue red_loop
            }
          }

          var redId  = redIndex[oidx]
          var retval
          if(flip) {
            retval = visit(blueId, redId)
          } else {
            retval = visit(redId, blueId)
          }
          if(retval !== void 0) {
            return retval 
          }
        }
      }
    } else {
      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
    }
  }
}

function scanComplete(
  d, axis, visit,
  redStart,  redEnd, red, redIndex,
  blueStart, blueEnd, blue, blueIndex) {

  var ptr      = 0
  var elemSize = 2*d
  var istart   = axis
  var iend     = axis+d

  for(var i=redStart; i<redEnd; ++i) {
    var idx = i + BLUE_FLAG
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }
  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = i + 1
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive    = 0
  for(var i=0; i<n; ++i) {
    var e = SWEEP_EVENTS[2*i+1]|0
    if(e < 0) {
      var idx   = -e
      if(idx >= BLUE_FLAG) {
        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
      } else {
        idx -= 1
        var blueId  = blueIndex[idx]
        var bluePtr = elemSize * idx

        var b0 = blue[bluePtr+axis+1]
        var b1 = blue[bluePtr+axis+1+d]

red_loop:
        for(var j=0; j<redActive; ++j) {
          var oidx   = RED_SWEEP_QUEUE[j]
          var redId  = redIndex[oidx]

          if(redId === blueId) {
            break
          }

          var redPtr = elemSize * oidx
          if(b1 < red[redPtr+axis+1] || 
            red[redPtr+axis+1+d] < b0) {
            continue
          }
          for(var k=axis+2; k<d; ++k) {
            if(blue[bluePtr + k + d] < red[redPtr + k] || 
               red[redPtr + k + d]   < blue[bluePtr + k]) {
              continue red_loop
            }
          }

          var retval = visit(redId, blueId)
          if(retval !== void 0) {
            return retval 
          }
        }
      }
    } else {
      var idx = e - BLUE_FLAG
      for(var j=redActive-1; j>=0; --j) {
        if(RED_SWEEP_QUEUE[j] === idx) {
          for(var k=j+1; k<redActive; ++k) {
            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
          }
          break
        }
      }
      --redActive
    }
  }
}
},{"./sort":38,"bit-twiddle":31,"typedarray-pool":205}],40:[function(require,module,exports){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('Invalid typed array length')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  buf.__proto__ = Buffer.prototype
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new Error(
        'If encoding is specified then the first argument must be a string'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'number') {
    throw new TypeError('"value" argument must not be a number')
  }

  if (value instanceof ArrayBuffer) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  return fromObject(value)
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be a number')
  } else if (size < 0) {
    throw new RangeError('"size" argument must not be negative')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('"encoding" must be a valid string encoding')
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('\'offset\' is out of bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('\'length\' is out of bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  buf.__proto__ = Buffer.prototype
  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj) {
    if (isArrayBufferView(obj) || 'length' in obj) {
      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
        return createBuffer(0)
      }
      return fromArrayLike(obj)
    }

    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
      return fromArrayLike(obj.data)
    }
  }

  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true
}

Buffer.compare = function compare (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError('Arguments must be Buffers')
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (isArrayBufferView(string) || string instanceof ArrayBuffer) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    string = '' + string
  }

  var len = string.length
  if (len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
      case undefined:
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) return utf8ToBytes(string).length // assume utf8
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max) str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (!Buffer.isBuffer(target)) {
    throw new TypeError('Argument must be a Buffer')
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset  // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
      : (firstByte > 0xBF) ? 2
      : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  newBuf.__proto__ = Buffer.prototype
  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start
  var i

  if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else if (len < 1000) {
    // ascending copy from start
    for (i = 0; i < len; ++i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, start + len),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if (code < 256) {
        val = code
      }
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : new Buffer(val, encoding)
    var len = bytes.length
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
function isArrayBufferView (obj) {
  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
}

function numberIsNaN (obj) {
  return obj !== obj // eslint-disable-line no-self-compare
}

},{"base64-js":41,"ieee754":150}],41:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function placeHoldersCount (b64) {
  var len = b64.length
  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // the number of equal signs (place holders)
  // if there are two placeholders, than the two characters before it
  // represent one byte
  // if there is only one, then the three characters before it represent 2 bytes
  // this is just a cheap hack to not do indexOf twice
  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
}

function byteLength (b64) {
  // base64 is 4/3 + up to two characters of the original data
  return b64.length * 3 / 4 - placeHoldersCount(b64)
}

function toByteArray (b64) {
  var i, j, l, tmp, placeHolders, arr
  var len = b64.length
  placeHolders = placeHoldersCount(b64)

  arr = new Arr(len * 3 / 4 - placeHolders)

  // if there are placeholders, only get up to the last complete 4 chars
  l = placeHolders > 0 ? len - 4 : len

  var L = 0

  for (i = 0, j = 0; i < l; i += 4, j += 3) {
    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
    arr[L++] = (tmp >> 16) & 0xFF
    arr[L++] = (tmp >> 8) & 0xFF
    arr[L++] = tmp & 0xFF
  }

  if (placeHolders === 2) {
    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[L++] = tmp & 0xFF
  } else if (placeHolders === 1) {
    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[L++] = (tmp >> 8) & 0xFF
    arr[L++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var output = ''
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    output += lookup[tmp >> 2]
    output += lookup[(tmp << 4) & 0x3F]
    output += '=='
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
    output += lookup[tmp >> 10]
    output += lookup[(tmp >> 4) & 0x3F]
    output += lookup[(tmp << 2) & 0x3F]
    output += '='
  }

  parts.push(output)

  return parts.join('')
}

},{}],42:[function(require,module,exports){
'use strict'

var monotoneTriangulate = require('./lib/monotone')
var makeIndex = require('./lib/triangulation')
var delaunayFlip = require('./lib/delaunay')
var filterTriangulation = require('./lib/filter')

module.exports = cdt2d

function canonicalizeEdge(e) {
  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
}

function compareEdge(a, b) {
  return a[0]-b[0] || a[1]-b[1]
}

function canonicalizeEdges(edges) {
  return edges.map(canonicalizeEdge).sort(compareEdge)
}

function getDefault(options, property, dflt) {
  if(property in options) {
    return options[property]
  }
  return dflt
}

function cdt2d(points, edges, options) {

  if(!Array.isArray(edges)) {
    options = edges || {}
    edges = []
  } else {
    options = options || {}
    edges = edges || []
  }

  //Parse out options
  var delaunay = !!getDefault(options, 'delaunay', true)
  var interior = !!getDefault(options, 'interior', true)
  var exterior = !!getDefault(options, 'exterior', true)
  var infinity = !!getDefault(options, 'infinity', false)

  //Handle trivial case
  if((!interior && !exterior) || points.length === 0) {
    return []
  }

  //Construct initial triangulation
  var cells = monotoneTriangulate(points, edges)

  //If delaunay refinement needed, then improve quality by edge flipping
  if(delaunay || interior !== exterior || infinity) {

    //Index all of the cells to support fast neighborhood queries
    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
    for(var i=0; i<cells.length; ++i) {
      var f = cells[i]
      triangulation.addTriangle(f[0], f[1], f[2])
    }

    //Run edge flipping
    if(delaunay) {
      delaunayFlip(points, triangulation)
    }

    //Filter points
    if(!exterior) {
      return filterTriangulation(triangulation, -1)
    } else if(!interior) {
      return filterTriangulation(triangulation,  1, infinity)
    } else if(infinity) {
      return filterTriangulation(triangulation, 0, infinity)
    } else {
      return triangulation.cells()
    }
    
  } else {
    return cells
  }
}

},{"./lib/delaunay":43,"./lib/filter":44,"./lib/monotone":45,"./lib/triangulation":46}],43:[function(require,module,exports){
'use strict'

var inCircle = require('robust-in-sphere')[4]
var bsearch = require('binary-search-bounds')

module.exports = delaunayRefine

function testFlip(points, triangulation, stack, a, b, x) {
  var y = triangulation.opposite(a, b)

  //Test boundary edge
  if(y < 0) {
    return
  }

  //Swap edge if order flipped
  if(b < a) {
    var tmp = a
    a = b
    b = tmp
    tmp = x
    x = y
    y = tmp
  }

  //Test if edge is constrained
  if(triangulation.isConstraint(a, b)) {
    return
  }

  //Test if edge is delaunay
  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
    stack.push(a, b)
  }
}

//Assume edges are sorted lexicographically
function delaunayRefine(points, triangulation) {
  var stack = []

  var numPoints = points.length
  var stars = triangulation.stars
  for(var a=0; a<numPoints; ++a) {
    var star = stars[a]
    for(var j=1; j<star.length; j+=2) {
      var b = star[j]

      //If order is not consistent, then skip edge
      if(b < a) {
        continue
      }

      //Check if edge is constrained
      if(triangulation.isConstraint(a, b)) {
        continue
      }

      //Find opposite edge
      var x = star[j-1], y = -1
      for(var k=1; k<star.length; k+=2) {
        if(star[k-1] === b) {
          y = star[k]
          break
        }
      }

      //If this is a boundary edge, don't flip it
      if(y < 0) {
        continue
      }

      //If edge is in circle, flip it
      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
        stack.push(a, b)
      }
    }
  }

  while(stack.length > 0) {
    var b = stack.pop()
    var a = stack.pop()

    //Find opposite pairs
    var x = -1, y = -1
    var star = stars[a]
    for(var i=1; i<star.length; i+=2) {
      var s = star[i-1]
      var t = star[i]
      if(s === b) {
        y = t
      } else if(t === b) {
        x = s
      }
    }

    //If x/y are both valid then skip edge
    if(x < 0 || y < 0) {
      continue
    }

    //If edge is now delaunay, then don't flip it
    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
      continue
    }

    //Flip the edge
    triangulation.flip(a, b)

    //Test flipping neighboring edges
    testFlip(points, triangulation, stack, x, a, y)
    testFlip(points, triangulation, stack, a, y, x)
    testFlip(points, triangulation, stack, y, b, x)
    testFlip(points, triangulation, stack, b, x, y)
  }
}

},{"binary-search-bounds":47,"robust-in-sphere":181}],44:[function(require,module,exports){
'use strict'

var bsearch = require('binary-search-bounds')

module.exports = classifyFaces

function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
  this.cells       = cells
  this.neighbor    = neighbor
  this.flags       = flags
  this.constraint  = constraint
  this.active      = active
  this.next        = next
  this.boundary    = boundary
}

var proto = FaceIndex.prototype

function compareCell(a, b) {
  return a[0] - b[0] ||
         a[1] - b[1] ||
         a[2] - b[2]
}

proto.locate = (function() {
  var key = [0,0,0]
  return function(a, b, c) {
    var x = a, y = b, z = c
    if(b < c) {
      if(b < a) {
        x = b
        y = c
        z = a
      }
    } else if(c < a) {
      x = c
      y = a
      z = b
    }
    if(x < 0) {
      return -1
    }
    key[0] = x
    key[1] = y
    key[2] = z
    return bsearch.eq(this.cells, key, compareCell)
  }
})()

function indexCells(triangulation, infinity) {
  //First get cells and canonicalize
  var cells = triangulation.cells()
  var nc = cells.length
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    var x = c[0], y = c[1], z = c[2]
    if(y < z) {
      if(y < x) {
        c[0] = y
        c[1] = z
        c[2] = x
      }
    } else if(z < x) {
      c[0] = z
      c[1] = x
      c[2] = y
    }
  }
  cells.sort(compareCell)

  //Initialize flag array
  var flags = new Array(nc)
  for(var i=0; i<flags.length; ++i) {
    flags[i] = 0
  }

  //Build neighbor index, initialize queues
  var active = []
  var next   = []
  var neighbor = new Array(3*nc)
  var constraint = new Array(3*nc)
  var boundary = null
  if(infinity) {
    boundary = []
  }
  var index = new FaceIndex(
    cells,
    neighbor,
    constraint,
    flags,
    active,
    next,
    boundary)
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    for(var j=0; j<3; ++j) {
      var x = c[j], y = c[(j+1)%3]
      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
      if(a < 0) {
        if(b) {
          next.push(i)
        } else {
          active.push(i)
          flags[i] = 1
        }
        if(infinity) {
          boundary.push([y, x, -1])
        }
      }
    }
  }
  return index
}

function filterCells(cells, flags, target) {
  var ptr = 0
  for(var i=0; i<cells.length; ++i) {
    if(flags[i] === target) {
      cells[ptr++] = cells[i]
    }
  }
  cells.length = ptr
  return cells
}

function classifyFaces(triangulation, target, infinity) {
  var index = indexCells(triangulation, infinity)

  if(target === 0) {
    if(infinity) {
      return index.cells.concat(index.boundary)
    } else {
      return index.cells
    }
  }

  var side = 1
  var active = index.active
  var next = index.next
  var flags = index.flags
  var cells = index.cells
  var constraint = index.constraint
  var neighbor = index.neighbor

  while(active.length > 0 || next.length > 0) {
    while(active.length > 0) {
      var t = active.pop()
      if(flags[t] === -side) {
        continue
      }
      flags[t] = side
      var c = cells[t]
      for(var j=0; j<3; ++j) {
        var f = neighbor[3*t+j]
        if(f >= 0 && flags[f] === 0) {
          if(constraint[3*t+j]) {
            next.push(f)
          } else {
            active.push(f)
            flags[f] = side
          }
        }
      }
    }

    //Swap arrays and loop
    var tmp = next
    next = active
    active = tmp
    next.length = 0
    side = -side
  }

  var result = filterCells(cells, flags, target)
  if(infinity) {
    return result.concat(index.boundary)
  }
  return result
}

},{"binary-search-bounds":47}],45:[function(require,module,exports){
'use strict'

var bsearch = require('binary-search-bounds')
var orient = require('robust-orientation')[3]

var EVENT_POINT = 0
var EVENT_END   = 1
var EVENT_START = 2

module.exports = monotoneTriangulate

//A partial convex hull fragment, made of two unimonotone polygons
function PartialHull(a, b, idx, lowerIds, upperIds) {
  this.a = a
  this.b = b
  this.idx = idx
  this.lowerIds = lowerIds
  this.upperIds = upperIds
}

//An event in the sweep line procedure
function Event(a, b, type, idx) {
  this.a    = a
  this.b    = b
  this.type = type
  this.idx  = idx
}

//This is used to compare events for the sweep line procedure
// Points are:
//  1. sorted lexicographically
//  2. sorted by type  (point < end < start)
//  3. segments sorted by winding order
//  4. sorted by index
function compareEvent(a, b) {
  var d =
    (a.a[0] - b.a[0]) ||
    (a.a[1] - b.a[1]) ||
    (a.type - b.type)
  if(d) { return d }
  if(a.type !== EVENT_POINT) {
    d = orient(a.a, a.b, b.b)
    if(d) { return d }
  }
  return a.idx - b.idx
}

function testPoint(hull, p) {
  return orient(hull.a, hull.b, p)
}

function addPoint(cells, hulls, points, p, idx) {
  var lo = bsearch.lt(hulls, p, testPoint)
  var hi = bsearch.gt(hulls, p, testPoint)
  for(var i=lo; i<hi; ++i) {
    var hull = hulls[i]

    //Insert p into lower hull
    var lowerIds = hull.lowerIds
    var m = lowerIds.length
    while(m > 1 && orient(
        points[lowerIds[m-2]],
        points[lowerIds[m-1]],
        p) > 0) {
      cells.push(
        [lowerIds[m-1],
         lowerIds[m-2],
         idx])
      m -= 1
    }
    lowerIds.length = m
    lowerIds.push(idx)

    //Insert p into upper hull
    var upperIds = hull.upperIds
    var m = upperIds.length
    while(m > 1 && orient(
        points[upperIds[m-2]],
        points[upperIds[m-1]],
        p) < 0) {
      cells.push(
        [upperIds[m-2],
         upperIds[m-1],
         idx])
      m -= 1
    }
    upperIds.length = m
    upperIds.push(idx)
  }
}

function findSplit(hull, edge) {
  var d
  if(hull.a[0] < edge.a[0]) {
    d = orient(hull.a, hull.b, edge.a)
  } else {
    d = orient(edge.b, edge.a, hull.a)
  }
  if(d) { return d }
  if(edge.b[0] < hull.b[0]) {
    d = orient(hull.a, hull.b, edge.b)
  } else {
    d = orient(edge.b, edge.a, hull.b)
  }
  return d || hull.idx - edge.idx
}

function splitHulls(hulls, points, event) {
  var splitIdx = bsearch.le(hulls, event, findSplit)
  var hull = hulls[splitIdx]
  var upperIds = hull.upperIds
  var x = upperIds[upperIds.length-1]
  hull.upperIds = [x]
  hulls.splice(splitIdx+1, 0,
    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
}


function mergeHulls(hulls, points, event) {
  //Swap pointers for merge search
  var tmp = event.a
  event.a = event.b
  event.b = tmp
  var mergeIdx = bsearch.eq(hulls, event, findSplit)
  var upper = hulls[mergeIdx]
  var lower = hulls[mergeIdx-1]
  lower.upperIds = upper.upperIds
  hulls.splice(mergeIdx, 1)
}


function monotoneTriangulate(points, edges) {

  var numPoints = points.length
  var numEdges = edges.length

  var events = []

  //Create point events
  for(var i=0; i<numPoints; ++i) {
    events.push(new Event(
      points[i],
      null,
      EVENT_POINT,
      i))
  }

  //Create edge events
  for(var i=0; i<numEdges; ++i) {
    var e = edges[i]
    var a = points[e[0]]
    var b = points[e[1]]
    if(a[0] < b[0]) {
      events.push(
        new Event(a, b, EVENT_START, i),
        new Event(b, a, EVENT_END, i))
    } else if(a[0] > b[0]) {
      events.push(
        new Event(b, a, EVENT_START, i),
        new Event(a, b, EVENT_END, i))
    }
  }

  //Sort events
  events.sort(compareEvent)

  //Initialize hull
  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]

  //Process events in order
  var cells = []
  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
    var event = events[i]
    var type = event.type
    if(type === EVENT_POINT) {
      addPoint(cells, hull, points, event.a, event.idx)
    } else if(type === EVENT_START) {
      splitHulls(hull, points, event)
    } else {
      mergeHulls(hull, points, event)
    }
  }

  //Return triangulation
  return cells
}

},{"binary-search-bounds":47,"robust-orientation":182}],46:[function(require,module,exports){
'use strict'

var bsearch = require('binary-search-bounds')

module.exports = createTriangulation

function Triangulation(stars, edges) {
  this.stars = stars
  this.edges = edges
}

var proto = Triangulation.prototype

function removePair(list, j, k) {
  for(var i=1, n=list.length; i<n; i+=2) {
    if(list[i-1] === j && list[i] === k) {
      list[i-1] = list[n-2]
      list[i] = list[n-1]
      list.length = n - 2
      return
    }
  }
}

proto.isConstraint = (function() {
  var e = [0,0]
  function compareLex(a, b) {
    return a[0] - b[0] || a[1] - b[1]
  }
  return function(i, j) {
    e[0] = Math.min(i,j)
    e[1] = Math.max(i,j)
    return bsearch.eq(this.edges, e, compareLex) >= 0
  }
})()

proto.removeTriangle = function(i, j, k) {
  var stars = this.stars
  removePair(stars[i], j, k)
  removePair(stars[j], k, i)
  removePair(stars[k], i, j)
}

proto.addTriangle = function(i, j, k) {
  var stars = this.stars
  stars[i].push(j, k)
  stars[j].push(k, i)
  stars[k].push(i, j)
}

proto.opposite = function(j, i) {
  var list = this.stars[i]
  for(var k=1, n=list.length; k<n; k+=2) {
    if(list[k] === j) {
      return list[k-1]
    }
  }
  return -1
}

proto.flip = function(i, j) {
  var a = this.opposite(i, j)
  var b = this.opposite(j, i)
  this.removeTriangle(i, j, a)
  this.removeTriangle(j, i, b)
  this.addTriangle(i, b, a)
  this.addTriangle(j, a, b)
}

proto.edges = function() {
  var stars = this.stars
  var result = []
  for(var i=0, n=stars.length; i<n; ++i) {
    var list = stars[i]
    for(var j=0, m=list.length; j<m; j+=2) {
      result.push([list[j], list[j+1]])
    }
  }
  return result
}

proto.cells = function() {
  var stars = this.stars
  var result = []
  for(var i=0, n=stars.length; i<n; ++i) {
    var list = stars[i]
    for(var j=0, m=list.length; j<m; j+=2) {
      var s = list[j]
      var t = list[j+1]
      if(i < Math.min(s, t)) {
        result.push([i, s, t])
      }
    }
  }
  return result
}

function createTriangulation(numVerts, edges) {
  var stars = new Array(numVerts)
  for(var i=0; i<numVerts; ++i) {
    stars[i] = []
  }
  return new Triangulation(stars, edges)
}

},{"binary-search-bounds":47}],47:[function(require,module,exports){
"use strict"

function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
  var code = [
    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
";while(l<=h){\
var m=(l+h)>>>1,x=a[m]"]
  if(earlyOut) {
    if(predicate.indexOf("c") < 0) {
      code.push(";if(x===y){return m}else if(x<=y){")
    } else {
      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
    }
  } else {
    code.push(";if(", predicate, "){i=m;")
  }
  if(reversed) {
    code.push("l=m+1}else{h=m-1}")
  } else {
    code.push("h=m-1}else{l=m+1}")
  }
  code.push("}")
  if(earlyOut) {
    code.push("return -1};")
  } else {
    code.push("return i};")
  }
  return code.join("")
}

function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
  var result = new Function([
  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
"function dispatchBsearch", suffix, "(a,y,c,l,h){\
if(typeof(c)==='function'){\
return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
}else{\
return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
}}\
return dispatchBsearch", suffix].join(""))
  return result()
}

module.exports = {
  ge: compileBoundsSearch(">=", false, "GE"),
  gt: compileBoundsSearch(">", false, "GT"),
  lt: compileBoundsSearch("<", true, "LT"),
  le: compileBoundsSearch("<=", true, "LE"),
  eq: compileBoundsSearch("-", true, "EQ", true)
}

},{}],48:[function(require,module,exports){
module.exports = clamp

function clamp(value, min, max) {
  return min < max
    ? (value < min ? min : value > max ? max : value)
    : (value < max ? max : value > min ? min : value)
}

},{}],49:[function(require,module,exports){
'use strict'

module.exports = cleanPSLG

var UnionFind = require('union-find')
var boxIntersect = require('box-intersect')
var segseg = require('robust-segment-intersect')
var rat = require('big-rat')
var ratCmp = require('big-rat/cmp')
var ratToFloat = require('big-rat/to-float')
var ratVec = require('rat-vec')
var nextafter = require('nextafter')

var solveIntersection = require('./lib/rat-seg-intersect')

// Bounds on a rational number when rounded to a float
function boundRat (r) {
  var f = ratToFloat(r)
  return [
    nextafter(f, -Infinity),
    nextafter(f, Infinity)
  ]
}

// Convert a list of edges in a pslg to bounding boxes
function boundEdges (points, edges) {
  var bounds = new Array(edges.length)
  for (var i = 0; i < edges.length; ++i) {
    var e = edges[i]
    var a = points[e[0]]
    var b = points[e[1]]
    bounds[i] = [
      nextafter(Math.min(a[0], b[0]), -Infinity),
      nextafter(Math.min(a[1], b[1]), -Infinity),
      nextafter(Math.max(a[0], b[0]), Infinity),
      nextafter(Math.max(a[1], b[1]), Infinity)
    ]
  }
  return bounds
}

// Convert a list of points into bounding boxes by duplicating coords
function boundPoints (points) {
  var bounds = new Array(points.length)
  for (var i = 0; i < points.length; ++i) {
    var p = points[i]
    bounds[i] = [
      nextafter(p[0], -Infinity),
      nextafter(p[1], -Infinity),
      nextafter(p[0], Infinity),
      nextafter(p[1], Infinity)
    ]
  }
  return bounds
}

// Find all pairs of crossing edges in a pslg (given edge bounds)
function getCrossings (points, edges, edgeBounds) {
  var result = []
  boxIntersect(edgeBounds, function (i, j) {
    var e = edges[i]
    var f = edges[j]
    if (e[0] === f[0] || e[0] === f[1] ||
      e[1] === f[0] || e[1] === f[1]) {
      return
    }
    var a = points[e[0]]
    var b = points[e[1]]
    var c = points[f[0]]
    var d = points[f[1]]
    if (segseg(a, b, c, d)) {
      result.push([i, j])
    }
  })
  return result
}

// Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
function getTJunctions (points, edges, edgeBounds, vertBounds) {
  var result = []
  boxIntersect(edgeBounds, vertBounds, function (i, v) {
    var e = edges[i]
    if (e[0] === v || e[1] === v) {
      return
    }
    var p = points[v]
    var a = points[e[0]]
    var b = points[e[1]]
    if (segseg(a, b, p, p)) {
      result.push([i, v])
    }
  })
  return result
}

// Cut edges along crossings/tjunctions
function cutEdges (floatPoints, edges, crossings, junctions, useColor) {
  var i, e

  // Convert crossings into tjunctions by constructing rational points
  var ratPoints = floatPoints.map(function(p) {
      return [
          rat(p[0]),
          rat(p[1])
      ]
  })
  for (i = 0; i < crossings.length; ++i) {
    var crossing = crossings[i]
    e = crossing[0]
    var f = crossing[1]
    var ee = edges[e]
    var ef = edges[f]
    var x = solveIntersection(
      ratVec(floatPoints[ee[0]]),
      ratVec(floatPoints[ee[1]]),
      ratVec(floatPoints[ef[0]]),
      ratVec(floatPoints[ef[1]]))
    if (!x) {
      // Segments are parallel, should already be handled by t-junctions
      continue
    }
    var idx = floatPoints.length
    floatPoints.push([ratToFloat(x[0]), ratToFloat(x[1])])
    ratPoints.push(x)
    junctions.push([e, idx], [f, idx])
  }

  // Sort tjunctions
  junctions.sort(function (a, b) {
    if (a[0] !== b[0]) {
      return a[0] - b[0]
    }
    var u = ratPoints[a[1]]
    var v = ratPoints[b[1]]
    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
  })

  // Split edges along junctions
  for (i = junctions.length - 1; i >= 0; --i) {
    var junction = junctions[i]
    e = junction[0]

    var edge = edges[e]
    var s = edge[0]
    var t = edge[1]

    // Check if edge is not lexicographically sorted
    var a = floatPoints[s]
    var b = floatPoints[t]
    if (((a[0] - b[0]) || (a[1] - b[1])) < 0) {
      var tmp = s
      s = t
      t = tmp
    }

    // Split leading edge
    edge[0] = s
    var last = edge[1] = junction[1]

    // If we are grouping edges by color, remember to track data
    var color
    if (useColor) {
      color = edge[2]
    }

    // Split other edges
    while (i > 0 && junctions[i - 1][0] === e) {
      var junction = junctions[--i]
      var next = junction[1]
      if (useColor) {
        edges.push([last, next, color])
      } else {
        edges.push([last, next])
      }
      last = next
    }

    // Add final edge
    if (useColor) {
      edges.push([last, t, color])
    } else {
      edges.push([last, t])
    }
  }

  // Return constructed rational points
  return ratPoints
}

// Merge overlapping points
function dedupPoints (floatPoints, ratPoints, floatBounds) {
  var numPoints = ratPoints.length
  var uf = new UnionFind(numPoints)

  // Compute rational bounds
  var bounds = []
  for (var i = 0; i < ratPoints.length; ++i) {
    var p = ratPoints[i]
    var xb = boundRat(p[0])
    var yb = boundRat(p[1])
    bounds.push([
      nextafter(xb[0], -Infinity),
      nextafter(yb[0], -Infinity),
      nextafter(xb[1], Infinity),
      nextafter(yb[1], Infinity)
    ])
  }

  // Link all points with over lapping boxes
  boxIntersect(bounds, function (i, j) {
    uf.link(i, j)
  })

  // Do 1 pass over points to combine points in label sets
  var noDupes = true
  var labels = new Array(numPoints)
  for (var i = 0; i < numPoints; ++i) {
    var j = uf.find(i)
    if (j !== i) {
      // Clear no-dupes flag, zero out label
      noDupes = false
      // Make each point the top-left point from its cell
      floatPoints[j] = [
        Math.min(floatPoints[i][0], floatPoints[j][0]),
        Math.min(floatPoints[i][1], floatPoints[j][1])
      ]
    }
  }

  // If no duplicates, return null to signal termination
  if (noDupes) {
    return null
  }

  var ptr = 0
  for (var i = 0; i < numPoints; ++i) {
    var j = uf.find(i)
    if (j === i) {
      labels[i] = ptr
      floatPoints[ptr++] = floatPoints[i]
    } else {
      labels[i] = -1
    }
  }

  floatPoints.length = ptr

  // Do a second pass to fix up missing labels
  for (var i = 0; i < numPoints; ++i) {
    if (labels[i] < 0) {
      labels[i] = labels[uf.find(i)]
    }
  }

  // Return resulting union-find data structure
  return labels
}

function compareLex2 (a, b) { return (a[0] - b[0]) || (a[1] - b[1]) }
function compareLex3 (a, b) {
  var d = (a[0] - b[0]) || (a[1] - b[1])
  if (d) {
    return d
  }
  if (a[2] < b[2]) {
    return -1
  } else if (a[2] > b[2]) {
    return 1
  }
  return 0
}

// Remove duplicate edge labels
function dedupEdges (edges, labels, useColor) {
  if (edges.length === 0) {
    return
  }
  if (labels) {
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      var a = labels[e[0]]
      var b = labels[e[1]]
      e[0] = Math.min(a, b)
      e[1] = Math.max(a, b)
    }
  } else {
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      var a = e[0]
      var b = e[1]
      e[0] = Math.min(a, b)
      e[1] = Math.max(a, b)
    }
  }
  if (useColor) {
    edges.sort(compareLex3)
  } else {
    edges.sort(compareLex2)
  }
  var ptr = 1
  for (var i = 1; i < edges.length; ++i) {
    var prev = edges[i - 1]
    var next = edges[i]
    if (next[0] === prev[0] && next[1] === prev[1] &&
      (!useColor || next[2] === prev[2])) {
      continue
    }
    edges[ptr++] = next
  }
  edges.length = ptr
}

function preRound (points, edges, useColor) {
  var labels = dedupPoints(points, [], boundPoints(points))
  dedupEdges(edges, labels, useColor)
  return !!labels
}

// Repeat until convergence
function snapRound (points, edges, useColor) {
  // 1. find edge crossings
  var edgeBounds = boundEdges(points, edges)
  var crossings = getCrossings(points, edges, edgeBounds)

  // 2. find t-junctions
  var vertBounds = boundPoints(points)
  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)

  // 3. cut edges, construct rational points
  var ratPoints = cutEdges(points, edges, crossings, tjunctions, useColor)

  // 4. dedupe verts
  var labels = dedupPoints(points, ratPoints, vertBounds)

  // 5. dedupe edges
  dedupEdges(edges, labels, useColor)

  // 6. check termination
  if (!labels) {
    return (crossings.length > 0 || tjunctions.length > 0)
  }

  // More iterations necessary
  return true
}

// Main loop, runs PSLG clean up until completion
function cleanPSLG (points, edges, colors) {
  // If using colors, augment edges with color data
  var prevEdges
  if (colors) {
    prevEdges = edges
    var augEdges = new Array(edges.length)
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      augEdges[i] = [e[0], e[1], colors[i]]
    }
    edges = augEdges
  }

  // First round: remove duplicate edges and points
  var modified = preRound(points, edges, !!colors)

  // Run snap rounding until convergence
  while (snapRound(points, edges, !!colors)) {
    modified = true
  }

  // Strip color tags
  if (!!colors && modified) {
    prevEdges.length = 0
    colors.length = 0
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      prevEdges.push([e[0], e[1]])
      colors.push(e[2])
    }
  }

  return modified
}

},{"./lib/rat-seg-intersect":50,"big-rat":17,"big-rat/cmp":15,"big-rat/to-float":29,"box-intersect":33,"nextafter":164,"rat-vec":176,"robust-segment-intersect":185,"union-find":206}],50:[function(require,module,exports){
'use strict'

module.exports = solveIntersection

var ratMul = require('big-rat/mul')
var ratDiv = require('big-rat/div')
var ratSub = require('big-rat/sub')
var ratSign = require('big-rat/sign')
var rvSub = require('rat-vec/sub')
var rvAdd = require('rat-vec/add')
var rvMuls = require('rat-vec/muls')

function ratPerp (a, b) {
  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
}

// Solve for intersection
//  x = a + t (b-a)
//  (x - c) ^ (d-c) = 0
//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
//  t * (b-a)^(d-c) = (d-c)^(a-c)
//  t = (d-c)^(a-c) / (b-a)^(d-c)

function solveIntersection (a, b, c, d) {
  var ba = rvSub(b, a)
  var dc = rvSub(d, c)

  var baXdc = ratPerp(ba, dc)

  if (ratSign(baXdc) === 0) {
    return null
  }

  var ac = rvSub(a, c)
  var dcXac = ratPerp(dc, ac)

  var t = ratDiv(dcXac, baXdc)
  var s = rvMuls(ba, t)
  var r = rvAdd(a, s)

  return r
}

},{"big-rat/div":16,"big-rat/mul":26,"big-rat/sign":27,"big-rat/sub":28,"rat-vec/add":175,"rat-vec/muls":177,"rat-vec/sub":178}],51:[function(require,module,exports){
/** @module  color-id */

'use strict'

var clamp = require('clamp')

module.exports = toNumber
module.exports.to = toNumber
module.exports.from = fromNumber

function toNumber (rgba, normalized) {
	if(normalized == null) normalized = true

	var r = rgba[0], g = rgba[1], b = rgba[2], a = rgba[3]

	if (a == null) a = normalized ? 1 : 255

	if (normalized) {
		r *= 255
		g *= 255
		b *= 255
		a *= 255
	}

	r = clamp(r, 0, 255) & 0xFF
	g = clamp(g, 0, 255) & 0xFF
	b = clamp(b, 0, 255) & 0xFF
	a = clamp(a, 0, 255) & 0xFF

	//hi-order shift converts to -1, so we can't use <<24
	var n = (r * 0x01000000) + (g << 16) + (b << 8) + (a)

	return n
}

function fromNumber (n, normalized) {
	n = +n

	var r = n >>> 24
	var g = (n & 0x00ff0000) >>> 16
	var b = (n & 0x0000ff00) >>> 8
	var a = n & 0x000000ff

	if (normalized === false) return [r, g, b, a]

	return [r/255, g/255, b/255, a/255]
}

},{"clamp":48}],52:[function(require,module,exports){
'use strict'

module.exports = {
	"aliceblue": [240, 248, 255],
	"antiquewhite": [250, 235, 215],
	"aqua": [0, 255, 255],
	"aquamarine": [127, 255, 212],
	"azure": [240, 255, 255],
	"beige": [245, 245, 220],
	"bisque": [255, 228, 196],
	"black": [0, 0, 0],
	"blanchedalmond": [255, 235, 205],
	"blue": [0, 0, 255],
	"blueviolet": [138, 43, 226],
	"brown": [165, 42, 42],
	"burlywood": [222, 184, 135],
	"cadetblue": [95, 158, 160],
	"chartreuse": [127, 255, 0],
	"chocolate": [210, 105, 30],
	"coral": [255, 127, 80],
	"cornflowerblue": [100, 149, 237],
	"cornsilk": [255, 248, 220],
	"crimson": [220, 20, 60],
	"cyan": [0, 255, 255],
	"darkblue": [0, 0, 139],
	"darkcyan": [0, 139, 139],
	"darkgoldenrod": [184, 134, 11],
	"darkgray": [169, 169, 169],
	"darkgreen": [0, 100, 0],
	"darkgrey": [169, 169, 169],
	"darkkhaki": [189, 183, 107],
	"darkmagenta": [139, 0, 139],
	"darkolivegreen": [85, 107, 47],
	"darkorange": [255, 140, 0],
	"darkorchid": [153, 50, 204],
	"darkred": [139, 0, 0],
	"darksalmon": [233, 150, 122],
	"darkseagreen": [143, 188, 143],
	"darkslateblue": [72, 61, 139],
	"darkslategray": [47, 79, 79],
	"darkslategrey": [47, 79, 79],
	"darkturquoise": [0, 206, 209],
	"darkviolet": [148, 0, 211],
	"deeppink": [255, 20, 147],
	"deepskyblue": [0, 191, 255],
	"dimgray": [105, 105, 105],
	"dimgrey": [105, 105, 105],
	"dodgerblue": [30, 144, 255],
	"firebrick": [178, 34, 34],
	"floralwhite": [255, 250, 240],
	"forestgreen": [34, 139, 34],
	"fuchsia": [255, 0, 255],
	"gainsboro": [220, 220, 220],
	"ghostwhite": [248, 248, 255],
	"gold": [255, 215, 0],
	"goldenrod": [218, 165, 32],
	"gray": [128, 128, 128],
	"green": [0, 128, 0],
	"greenyellow": [173, 255, 47],
	"grey": [128, 128, 128],
	"honeydew": [240, 255, 240],
	"hotpink": [255, 105, 180],
	"indianred": [205, 92, 92],
	"indigo": [75, 0, 130],
	"ivory": [255, 255, 240],
	"khaki": [240, 230, 140],
	"lavender": [230, 230, 250],
	"lavenderblush": [255, 240, 245],
	"lawngreen": [124, 252, 0],
	"lemonchiffon": [255, 250, 205],
	"lightblue": [173, 216, 230],
	"lightcoral": [240, 128, 128],
	"lightcyan": [224, 255, 255],
	"lightgoldenrodyellow": [250, 250, 210],
	"lightgray": [211, 211, 211],
	"lightgreen": [144, 238, 144],
	"lightgrey": [211, 211, 211],
	"lightpink": [255, 182, 193],
	"lightsalmon": [255, 160, 122],
	"lightseagreen": [32, 178, 170],
	"lightskyblue": [135, 206, 250],
	"lightslategray": [119, 136, 153],
	"lightslategrey": [119, 136, 153],
	"lightsteelblue": [176, 196, 222],
	"lightyellow": [255, 255, 224],
	"lime": [0, 255, 0],
	"limegreen": [50, 205, 50],
	"linen": [250, 240, 230],
	"magenta": [255, 0, 255],
	"maroon": [128, 0, 0],
	"mediumaquamarine": [102, 205, 170],
	"mediumblue": [0, 0, 205],
	"mediumorchid": [186, 85, 211],
	"mediumpurple": [147, 112, 219],
	"mediumseagreen": [60, 179, 113],
	"mediumslateblue": [123, 104, 238],
	"mediumspringgreen": [0, 250, 154],
	"mediumturquoise": [72, 209, 204],
	"mediumvioletred": [199, 21, 133],
	"midnightblue": [25, 25, 112],
	"mintcream": [245, 255, 250],
	"mistyrose": [255, 228, 225],
	"moccasin": [255, 228, 181],
	"navajowhite": [255, 222, 173],
	"navy": [0, 0, 128],
	"oldlace": [253, 245, 230],
	"olive": [128, 128, 0],
	"olivedrab": [107, 142, 35],
	"orange": [255, 165, 0],
	"orangered": [255, 69, 0],
	"orchid": [218, 112, 214],
	"palegoldenrod": [238, 232, 170],
	"palegreen": [152, 251, 152],
	"paleturquoise": [175, 238, 238],
	"palevioletred": [219, 112, 147],
	"papayawhip": [255, 239, 213],
	"peachpuff": [255, 218, 185],
	"peru": [205, 133, 63],
	"pink": [255, 192, 203],
	"plum": [221, 160, 221],
	"powderblue": [176, 224, 230],
	"purple": [128, 0, 128],
	"rebeccapurple": [102, 51, 153],
	"red": [255, 0, 0],
	"rosybrown": [188, 143, 143],
	"royalblue": [65, 105, 225],
	"saddlebrown": [139, 69, 19],
	"salmon": [250, 128, 114],
	"sandybrown": [244, 164, 96],
	"seagreen": [46, 139, 87],
	"seashell": [255, 245, 238],
	"sienna": [160, 82, 45],
	"silver": [192, 192, 192],
	"skyblue": [135, 206, 235],
	"slateblue": [106, 90, 205],
	"slategray": [112, 128, 144],
	"slategrey": [112, 128, 144],
	"snow": [255, 250, 250],
	"springgreen": [0, 255, 127],
	"steelblue": [70, 130, 180],
	"tan": [210, 180, 140],
	"teal": [0, 128, 128],
	"thistle": [216, 191, 216],
	"tomato": [255, 99, 71],
	"turquoise": [64, 224, 208],
	"violet": [238, 130, 238],
	"wheat": [245, 222, 179],
	"white": [255, 255, 255],
	"whitesmoke": [245, 245, 245],
	"yellow": [255, 255, 0],
	"yellowgreen": [154, 205, 50]
};

},{}],53:[function(require,module,exports){
(function (global){
/**
 * @module color-parse
 */

'use strict'


module.exports = parse;


var names = require('color-name');
var isObject = require('is-plain-obj');


/**
 * Base hues
 * http://dev.w3.org/csswg/css-color/#typedef-named-hue
 */
//FIXME: use external hue detector
var baseHues = {
	red: 0,
	orange: 60,
	yellow: 120,
	green: 180,
	blue: 240,
	purple: 300
};


/**
 * Parse color from the string passed
 *
 * @return {Object} A space indicator `space`, an array `values` and `alpha`
 */
function parse (cstr) {
	var m, parts = [], alpha = 1, space;

	if (typeof cstr === 'string') {
		//keyword
		if (names[cstr]) {
			parts = names[cstr].slice();
			space = 'rgb'
		}

		//reserved words
		else if (cstr === 'transparent') {
			alpha = 0;
			space = 'rgb'
			parts = [0,0,0]
		}

		//hex
		else if (/^#[A-Fa-f0-9]+$/.test(cstr)) {
			var base = cstr.slice(1);
			var size = base.length;
			var isShort = size <= 4;
			alpha = 1;

			if (isShort) {
				parts = [
					parseInt(base[0] + base[0], 16),
					parseInt(base[1] + base[1], 16),
					parseInt(base[2] + base[2], 16)
				]
				if (size === 4) {
					alpha = parseInt(base[3] + base[3], 16) / 255
				}
			}
			else {
				parts = [
					parseInt(base[0] + base[1], 16),
					parseInt(base[2] + base[3], 16),
					parseInt(base[4] + base[5], 16)
				]
				if (size === 8) {
					alpha = parseInt(base[6] + base[7], 16) / 255
				}
			}

			if (!parts[0]) parts[0] = 0;
			if (!parts[1]) parts[1] = 0;
			if (!parts[2]) parts[2] = 0;

			space = 'rgb'
		}

		//color space
		else if (m = /^((?:rgb|hs[lvb]|hwb|cmyk?|xy[zy]|gray|lab|lchu?v?|[ly]uv|lms)a?)\s*\(([^\)]*)\)/.exec(cstr)) {
			var name = m[1];
			var base = name.replace(/a$/, '');
			space = base;
			var size = base === 'cmyk' ? 4 : base === 'gray' ? 1 : 3;
			parts = m[2].trim()
				.split(/\s*,\s*/)
				.map(function (x, i) {
					//<percentage>
					if (/%$/.test(x)) {
						//alpha
						if (i === size)	return parseFloat(x) / 100;
						//rgb
						if (base === 'rgb') return parseFloat(x) * 255 / 100;
						return parseFloat(x);
					}
					//hue
					else if (base[i] === 'h') {
						//<deg>
						if (/deg$/.test(x)) {
							return parseFloat(x);
						}
						//<base-hue>
						else if (baseHues[x] !== undefined) {
							return baseHues[x];
						}
					}
					return parseFloat(x);
				});

			if (name === base) parts.push(1);
			alpha = parts[size] === undefined ? 1 : parts[size];
			parts = parts.slice(0, size);
		}

		//named channels case
		else if (cstr.length > 10 && /[0-9](?:\s|\/)/.test(cstr)) {
			parts = cstr.match(/([0-9]+)/g).map(function (value) {
				return parseFloat(value);
			});

			space = cstr.match(/([a-z])/ig).join('').toLowerCase();
		}
	}

	//numeric case
	else if (typeof cstr === 'number') {
		space = 'rgb'
		parts = [cstr >>> 16, (cstr & 0x00ff00) >>> 8, cstr & 0x0000ff];
	}

	//object case - detects css cases of rgb and hsl
	else if (isObject(cstr)) {
		if (cstr.r != null) {
			parts = [cstr.r, cstr.g, cstr.b];
			space = 'rgb'
		}
		else if (cstr.red != null) {
			parts = [cstr.red, cstr.green, cstr.blue];
			space = 'rgb'
		}
		else if (cstr.h != null) {
			parts = [cstr.h, cstr.s, cstr.l];
			space = 'hsl';
		}
		else if (cstr.hue != null) {
			parts = [cstr.hue, cstr.saturation, cstr.lightness];
			space = 'hsl';
		}

		if (cstr.a != null) alpha = cstr.a;
		else if (cstr.alpha != null) alpha = cstr.alpha;
		else if (cstr.opacity != null) alpha = cstr.opacity / 100;
	}

	//array
	else if (Array.isArray(cstr) || global.ArrayBuffer && ArrayBuffer.isView && ArrayBuffer.isView(cstr)) {
		parts = [cstr[0], cstr[1], cstr[2]];
		space = 'rgb'
		alpha = cstr.length === 4 ? cstr[3] : 1;
	}

	return {
		space: space,
		values: parts,
		alpha: alpha
	};
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"color-name":52,"is-plain-obj":156}],54:[function(require,module,exports){
/** @module  color-rgba */

'use strict'

var parse = require('color-parse')
var hsl = require('color-space/hsl')
var clamp = require('clamp')

module.exports = function rgba (color, normalize) {
	if (Array.isArray(color)) return color;

	if (normalize == null) normalize = true

	var parsed = parse(color);

	if (!parsed.space) return [];

	var values = parsed.values, i, l = values.length;
	for (i = 0; i < l; i++) {
		values[i] = clamp(values[i], 0, 255)
	}

	if (parsed.space[0] === 'h') {
		values = hsl.rgb(values)
	}

	if (normalize) {
		for (i = 0; i < l; i++) {
			values[i] /= 255
		}
	}

	values.push(clamp(parsed.alpha, 0, 1))

	return values
}


},{"clamp":48,"color-parse":53,"color-space/hsl":55}],55:[function(require,module,exports){
/**
 * @module color-space/hsl
 */
'use strict'

var rgb = require('./rgb');

module.exports = {
	name: 'hsl',
	min: [0,0,0],
	max: [360,100,100],
	channel: ['hue', 'saturation', 'lightness'],
	alias: ['HSL'],

	rgb: function(hsl) {
		var h = hsl[0] / 360,
				s = hsl[1] / 100,
				l = hsl[2] / 100,
				t1, t2, t3, rgb, val;

		if (s === 0) {
			val = l * 255;
			return [val, val, val];
		}

		if (l < 0.5) {
			t2 = l * (1 + s);
		}
		else {
			t2 = l + s - l * s;
		}
		t1 = 2 * l - t2;

		rgb = [0, 0, 0];
		for (var i = 0; i < 3; i++) {
			t3 = h + 1 / 3 * - (i - 1);
			if (t3 < 0) {
				t3++;
			}
			else if (t3 > 1) {
				t3--;
			}

			if (6 * t3 < 1) {
				val = t1 + (t2 - t1) * 6 * t3;
			}
			else if (2 * t3 < 1) {
				val = t2;
			}
			else if (3 * t3 < 2) {
				val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
			}
			else {
				val = t1;
			}

			rgb[i] = val * 255;
		}

		return rgb;
	}
};


//extend rgb
rgb.hsl = function(rgb) {
	var r = rgb[0]/255,
			g = rgb[1]/255,
			b = rgb[2]/255,
			min = Math.min(r, g, b),
			max = Math.max(r, g, b),
			delta = max - min,
			h, s, l;

	if (max === min) {
		h = 0;
	}
	else if (r === max) {
		h = (g - b) / delta;
	}
	else if (g === max) {
		h = 2 + (b - r) / delta;
	}
	else if (b === max) {
		h = 4 + (r - g)/ delta;
	}

	h = Math.min(h * 60, 360);

	if (h < 0) {
		h += 360;
	}

	l = (min + max) / 2;

	if (max === min) {
		s = 0;
	}
	else if (l <= 0.5) {
		s = delta / (max + min);
	}
	else {
		s = delta / (2 - max - min);
	}

	return [h, s * 100, l * 100];
};

},{"./rgb":56}],56:[function(require,module,exports){
/**
 * RGB space.
 *
 * @module  color-space/rgb
 */
'use strict'

module.exports = {
	name: 'rgb',
	min: [0,0,0],
	max: [255,255,255],
	channel: ['red', 'green', 'blue'],
	alias: ['RGB']
};

},{}],57:[function(require,module,exports){
"use strict"

module.exports = compareAngle

var orient = require("robust-orientation")
var sgn = require("signum")
var twoSum = require("two-sum")
var robustProduct = require("robust-product")
var robustSum = require("robust-sum")

function testInterior(a, b, c) {
  var x0 = twoSum(a[0], -b[0])
  var y0 = twoSum(a[1], -b[1])
  var x1 = twoSum(c[0], -b[0])
  var y1 = twoSum(c[1], -b[1])

  var d = robustSum(
    robustProduct(x0, x1),
    robustProduct(y0, y1))

  return d[d.length-1] >= 0
}

function compareAngle(a, b, c, d) {
  var bcd = orient(b, c, d)
  if(bcd === 0) {
    //Handle degenerate cases
    var sabc = sgn(orient(a, b, c))
    var sabd = sgn(orient(a, b, d))
    if(sabc === sabd) {
      if(sabc === 0) {
        var ic = testInterior(a, b, c)
        var id = testInterior(a, b, d)
        if(ic === id) {
          return 0
        } else if(ic) {
          return 1
        } else {
          return -1
        }
      }
      return 0
    } else if(sabd === 0) {
      if(sabc > 0) {
        return -1
      } else if(testInterior(a, b, d)) {
        return -1
      } else {
        return 1
      }
    } else if(sabc === 0) {
      if(sabd > 0) {
        return 1
      } else if(testInterior(a, b, c)) {
        return 1
      } else {
        return -1
      }
    }
    return sgn(sabd - sabc)
  }
  var abc = orient(a, b, c)
  if(abc > 0) {
    if(bcd > 0 && orient(a, b, d) > 0) {
      return 1
    }
    return -1
  } else if(abc < 0) {
    if(bcd > 0 || orient(a, b, d) > 0) {
      return 1
    }
    return -1
  } else {
    var abd = orient(a, b, d)
    if(abd > 0) {
      return 1
    } else {
      if(testInterior(a, b, c)) {
        return 1
      } else {
        return -1
      }
    }
  }
}
},{"robust-orientation":182,"robust-product":183,"robust-sum":187,"signum":188,"two-sum":204}],58:[function(require,module,exports){
"use strict"

var createThunk = require("./lib/thunk.js")

function Procedure() {
  this.argTypes = []
  this.shimArgs = []
  this.arrayArgs = []
  this.arrayBlockIndices = []
  this.scalarArgs = []
  this.offsetArgs = []
  this.offsetArgIndex = []
  this.indexArgs = []
  this.shapeArgs = []
  this.funcName = ""
  this.pre = null
  this.body = null
  this.post = null
  this.debug = false
}

function compileCwise(user_args) {
  //Create procedure
  var proc = new Procedure()
  
  //Parse blocks
  proc.pre    = user_args.pre
  proc.body   = user_args.body
  proc.post   = user_args.post

  //Parse arguments
  var proc_args = user_args.args.slice(0)
  proc.argTypes = proc_args
  for(var i=0; i<proc_args.length; ++i) {
    var arg_type = proc_args[i]
    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
      proc.argTypes[i] = "array"
      proc.arrayArgs.push(i)
      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
      proc.shimArgs.push("array" + i)
      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
        throw new Error("cwise: pre() block may not reference array args")
      }
      if(i < proc.post.args.length && proc.post.args[i].count>0) {
        throw new Error("cwise: post() block may not reference array args")
      }
    } else if(arg_type === "scalar") {
      proc.scalarArgs.push(i)
      proc.shimArgs.push("scalar" + i)
    } else if(arg_type === "index") {
      proc.indexArgs.push(i)
      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
        throw new Error("cwise: pre() block may not reference array index")
      }
      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
        throw new Error("cwise: body() block may not write to array index")
      }
      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
        throw new Error("cwise: post() block may not reference array index")
      }
    } else if(arg_type === "shape") {
      proc.shapeArgs.push(i)
      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
        throw new Error("cwise: pre() block may not write to array shape")
      }
      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
        throw new Error("cwise: body() block may not write to array shape")
      }
      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
        throw new Error("cwise: post() block may not write to array shape")
      }
    } else if(typeof arg_type === "object" && arg_type.offset) {
      proc.argTypes[i] = "offset"
      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
      proc.offsetArgIndex.push(i)
    } else {
      throw new Error("cwise: Unknown argument type " + proc_args[i])
    }
  }
  
  //Make sure at least one array argument was specified
  if(proc.arrayArgs.length <= 0) {
    throw new Error("cwise: No array arguments specified")
  }
  
  //Make sure arguments are correct
  if(proc.pre.args.length > proc_args.length) {
    throw new Error("cwise: Too many arguments in pre() block")
  }
  if(proc.body.args.length > proc_args.length) {
    throw new Error("cwise: Too many arguments in body() block")
  }
  if(proc.post.args.length > proc_args.length) {
    throw new Error("cwise: Too many arguments in post() block")
  }

  //Check debug flag
  proc.debug = !!user_args.printCode || !!user_args.debug
  
  //Retrieve name
  proc.funcName = user_args.funcName || "cwise"
  
  //Read in block size
  proc.blockSize = user_args.blockSize || 64

  return createThunk(proc)
}

module.exports = compileCwise

},{"./lib/thunk.js":60}],59:[function(require,module,exports){
"use strict"

var uniq = require("uniq")

// This function generates very simple loops analogous to how you typically traverse arrays (the outermost loop corresponds to the slowest changing index, the innermost loop to the fastest changing index)
// TODO: If two arrays have the same strides (and offsets) there is potential for decreasing the number of "pointers" and related variables. The drawback is that the type signature would become more specific and that there would thus be less potential for caching, but it might still be worth it, especially when dealing with large numbers of arguments.
function innerFill(order, proc, body) {
  var dimension = order.length
    , nargs = proc.arrayArgs.length
    , has_index = proc.indexArgs.length>0
    , code = []
    , vars = []
    , idx=0, pidx=0, i, j
  for(i=0; i<dimension; ++i) { // Iteration variables
    vars.push(["i",i,"=0"].join(""))
  }
  //Compute scan deltas
  for(j=0; j<nargs; ++j) {
    for(i=0; i<dimension; ++i) {
      pidx = idx
      idx = order[i]
      if(i === 0) { // The innermost/fastest dimension's delta is simply its stride
        vars.push(["d",j,"s",i,"=t",j,"p",idx].join(""))
      } else { // For other dimensions the delta is basically the stride minus something which essentially "rewinds" the previous (more inner) dimension
        vars.push(["d",j,"s",i,"=(t",j,"p",idx,"-s",pidx,"*t",j,"p",pidx,")"].join(""))
      }
    }
  }
  if (vars.length > 0) {
    code.push("var " + vars.join(","))
  }  
  //Scan loop
  for(i=dimension-1; i>=0; --i) { // Start at largest stride and work your way inwards
    idx = order[i]
    code.push(["for(i",i,"=0;i",i,"<s",idx,";++i",i,"){"].join(""))
  }
  //Push body of inner loop
  code.push(body)
  //Advance scan pointers
  for(i=0; i<dimension; ++i) {
    pidx = idx
    idx = order[i]
    for(j=0; j<nargs; ++j) {
      code.push(["p",j,"+=d",j,"s",i].join(""))
    }
    if(has_index) {
      if(i > 0) {
        code.push(["index[",pidx,"]-=s",pidx].join(""))
      }
      code.push(["++index[",idx,"]"].join(""))
    }
    code.push("}")
  }
  return code.join("\n")
}

// Generate "outer" loops that loop over blocks of data, applying "inner" loops to the blocks by manipulating the local variables in such a way that the inner loop only "sees" the current block.
// TODO: If this is used, then the previous declaration (done by generateCwiseOp) of s* is essentially unnecessary.
//       I believe the s* are not used elsewhere (in particular, I don't think they're used in the pre/post parts and "shape" is defined independently), so it would be possible to make defining the s* dependent on what loop method is being used.
function outerFill(matched, order, proc, body) {
  var dimension = order.length
    , nargs = proc.arrayArgs.length
    , blockSize = proc.blockSize
    , has_index = proc.indexArgs.length > 0
    , code = []
  for(var i=0; i<nargs; ++i) {
    code.push(["var offset",i,"=p",i].join(""))
  }
  //Generate loops for unmatched dimensions
  // The order in which these dimensions are traversed is fairly arbitrary (from small stride to large stride, for the first argument)
  // TODO: It would be nice if the order in which these loops are placed would also be somehow "optimal" (at the very least we should check that it really doesn't hurt us if they're not).
  for(var i=matched; i<dimension; ++i) {
    code.push(["for(var j"+i+"=SS[", order[i], "]|0;j", i, ">0;){"].join("")) // Iterate back to front
    code.push(["if(j",i,"<",blockSize,"){"].join("")) // Either decrease j by blockSize (s = blockSize), or set it to zero (after setting s = j).
    code.push(["s",order[i],"=j",i].join(""))
    code.push(["j",i,"=0"].join(""))
    code.push(["}else{s",order[i],"=",blockSize].join(""))
    code.push(["j",i,"-=",blockSize,"}"].join(""))
    if(has_index) {
      code.push(["index[",order[i],"]=j",i].join(""))
    }
  }
  for(var i=0; i<nargs; ++i) {
    var indexStr = ["offset"+i]
    for(var j=matched; j<dimension; ++j) {
      indexStr.push(["j",j,"*t",i,"p",order[j]].join(""))
    }
    code.push(["p",i,"=(",indexStr.join("+"),")"].join(""))
  }
  code.push(innerFill(order, proc, body))
  for(var i=matched; i<dimension; ++i) {
    code.push("}")
  }
  return code.join("\n")
}

//Count the number of compatible inner orders
// This is the length of the longest common prefix of the arrays in orders.
// Each array in orders lists the dimensions of the correspond ndarray in order of increasing stride.
// This is thus the maximum number of dimensions that can be efficiently traversed by simple nested loops for all arrays.
function countMatches(orders) {
  var matched = 0, dimension = orders[0].length
  while(matched < dimension) {
    for(var j=1; j<orders.length; ++j) {
      if(orders[j][matched] !== orders[0][matched]) {
        return matched
      }
    }
    ++matched
  }
  return matched
}

//Processes a block according to the given data types
// Replaces variable names by different ones, either "local" ones (that are then ferried in and out of the given array) or ones matching the arguments that the function performing the ultimate loop will accept.
function processBlock(block, proc, dtypes) {
  var code = block.body
  var pre = []
  var post = []
  for(var i=0; i<block.args.length; ++i) {
    var carg = block.args[i]
    if(carg.count <= 0) {
      continue
    }
    var re = new RegExp(carg.name, "g")
    var ptrStr = ""
    var arrNum = proc.arrayArgs.indexOf(i)
    switch(proc.argTypes[i]) {
      case "offset":
        var offArgIndex = proc.offsetArgIndex.indexOf(i)
        var offArg = proc.offsetArgs[offArgIndex]
        arrNum = offArg.array
        ptrStr = "+q" + offArgIndex // Adds offset to the "pointer" in the array
      case "array":
        ptrStr = "p" + arrNum + ptrStr
        var localStr = "l" + i
        var arrStr = "a" + arrNum
        if (proc.arrayBlockIndices[arrNum] === 0) { // Argument to body is just a single value from this array
          if(carg.count === 1) { // Argument/array used only once(?)
            if(dtypes[arrNum] === "generic") {
              if(carg.lvalue) {
                pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
                code = code.replace(re, localStr)
                post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
              } else {
                code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
              }
            } else {
              code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
            }
          } else if(dtypes[arrNum] === "generic") {
            pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
            code = code.replace(re, localStr)
            if(carg.lvalue) {
              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
            }
          } else {
            pre.push(["var ", localStr, "=", arrStr, "[", ptrStr, "]"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
            code = code.replace(re, localStr)
            if(carg.lvalue) {
              post.push([arrStr, "[", ptrStr, "]=", localStr].join(""))
            }
          }
        } else { // Argument to body is a "block"
          var reStrArr = [carg.name], ptrStrArr = [ptrStr]
          for(var j=0; j<Math.abs(proc.arrayBlockIndices[arrNum]); j++) {
            reStrArr.push("\\s*\\[([^\\]]+)\\]")
            ptrStrArr.push("$" + (j+1) + "*t" + arrNum + "b" + j) // Matched index times stride
          }
          re = new RegExp(reStrArr.join(""), "g")
          ptrStr = ptrStrArr.join("+")
          if(dtypes[arrNum] === "generic") {
            /*if(carg.lvalue) {
              pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
              code = code.replace(re, localStr)
              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
            } else {
              code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
            }*/
            throw new Error("cwise: Generic arrays not supported in combination with blocks!")
          } else {
            // This does not produce any local variables, even if variables are used multiple times. It would be possible to do so, but it would complicate things quite a bit.
            code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
          }
        }
      break
      case "scalar":
        code = code.replace(re, "Y" + proc.scalarArgs.indexOf(i))
      break
      case "index":
        code = code.replace(re, "index")
      break
      case "shape":
        code = code.replace(re, "shape")
      break
    }
  }
  return [pre.join("\n"), code, post.join("\n")].join("\n").trim()
}

function typeSummary(dtypes) {
  var summary = new Array(dtypes.length)
  var allEqual = true
  for(var i=0; i<dtypes.length; ++i) {
    var t = dtypes[i]
    var digits = t.match(/\d+/)
    if(!digits) {
      digits = ""
    } else {
      digits = digits[0]
    }
    if(t.charAt(0) === 0) {
      summary[i] = "u" + t.charAt(1) + digits
    } else {
      summary[i] = t.charAt(0) + digits
    }
    if(i > 0) {
      allEqual = allEqual && summary[i] === summary[i-1]
    }
  }
  if(allEqual) {
    return summary[0]
  }
  return summary.join("")
}

//Generates a cwise operator
function generateCWiseOp(proc, typesig) {

  //Compute dimension
  // Arrays get put first in typesig, and there are two entries per array (dtype and order), so this gets the number of dimensions in the first array arg.
  var dimension = (typesig[1].length - Math.abs(proc.arrayBlockIndices[0]))|0
  var orders = new Array(proc.arrayArgs.length)
  var dtypes = new Array(proc.arrayArgs.length)
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    dtypes[i] = typesig[2*i]
    orders[i] = typesig[2*i+1]
  }
  
  //Determine where block and loop indices start and end
  var blockBegin = [], blockEnd = [] // These indices are exposed as blocks
  var loopBegin = [], loopEnd = [] // These indices are iterated over
  var loopOrders = [] // orders restricted to the loop indices
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    if (proc.arrayBlockIndices[i]<0) {
      loopBegin.push(0)
      loopEnd.push(dimension)
      blockBegin.push(dimension)
      blockEnd.push(dimension+proc.arrayBlockIndices[i])
    } else {
      loopBegin.push(proc.arrayBlockIndices[i]) // Non-negative
      loopEnd.push(proc.arrayBlockIndices[i]+dimension)
      blockBegin.push(0)
      blockEnd.push(proc.arrayBlockIndices[i])
    }
    var newOrder = []
    for(var j=0; j<orders[i].length; j++) {
      if (loopBegin[i]<=orders[i][j] && orders[i][j]<loopEnd[i]) {
        newOrder.push(orders[i][j]-loopBegin[i]) // If this is a loop index, put it in newOrder, subtracting loopBegin, to make sure that all loopOrders are using a common set of indices.
      }
    }
    loopOrders.push(newOrder)
  }

  //First create arguments for procedure
  var arglist = ["SS"] // SS is the overall shape over which we iterate
  var code = ["'use strict'"]
  var vars = []
  
  for(var j=0; j<dimension; ++j) {
    vars.push(["s", j, "=SS[", j, "]"].join("")) // The limits for each dimension.
  }
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    arglist.push("a"+i) // Actual data array
    arglist.push("t"+i) // Strides
    arglist.push("p"+i) // Offset in the array at which the data starts (also used for iterating over the data)
    
    for(var j=0; j<dimension; ++j) { // Unpack the strides into vars for looping
      vars.push(["t",i,"p",j,"=t",i,"[",loopBegin[i]+j,"]"].join(""))
    }
    
    for(var j=0; j<Math.abs(proc.arrayBlockIndices[i]); ++j) { // Unpack the strides into vars for block iteration
      vars.push(["t",i,"b",j,"=t",i,"[",blockBegin[i]+j,"]"].join(""))
    }
  }
  for(var i=0; i<proc.scalarArgs.length; ++i) {
    arglist.push("Y" + i)
  }
  if(proc.shapeArgs.length > 0) {
    vars.push("shape=SS.slice(0)") // Makes the shape over which we iterate available to the user defined functions (so you can use width/height for example)
  }
  if(proc.indexArgs.length > 0) {
    // Prepare an array to keep track of the (logical) indices, initialized to dimension zeroes.
    var zeros = new Array(dimension)
    for(var i=0; i<dimension; ++i) {
      zeros[i] = "0"
    }
    vars.push(["index=[", zeros.join(","), "]"].join(""))
  }
  for(var i=0; i<proc.offsetArgs.length; ++i) { // Offset arguments used for stencil operations
    var off_arg = proc.offsetArgs[i]
    var init_string = []
    for(var j=0; j<off_arg.offset.length; ++j) {
      if(off_arg.offset[j] === 0) {
        continue
      } else if(off_arg.offset[j] === 1) {
        init_string.push(["t", off_arg.array, "p", j].join(""))      
      } else {
        init_string.push([off_arg.offset[j], "*t", off_arg.array, "p", j].join(""))
      }
    }
    if(init_string.length === 0) {
      vars.push("q" + i + "=0")
    } else {
      vars.push(["q", i, "=", init_string.join("+")].join(""))
    }
  }

  //Prepare this variables
  var thisVars = uniq([].concat(proc.pre.thisVars)
                      .concat(proc.body.thisVars)
                      .concat(proc.post.thisVars))
  vars = vars.concat(thisVars)
  if (vars.length > 0) {
    code.push("var " + vars.join(","))
  }
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    code.push("p"+i+"|=0")
  }
  
  //Inline prelude
  if(proc.pre.body.length > 3) {
    code.push(processBlock(proc.pre, proc, dtypes))
  }

  //Process body
  var body = processBlock(proc.body, proc, dtypes)
  var matched = countMatches(loopOrders)
  if(matched < dimension) {
    code.push(outerFill(matched, loopOrders[0], proc, body)) // TODO: Rather than passing loopOrders[0], it might be interesting to look at passing an order that represents the majority of the arguments for example.
  } else {
    code.push(innerFill(loopOrders[0], proc, body))
  }

  //Inline epilog
  if(proc.post.body.length > 3) {
    code.push(processBlock(proc.post, proc, dtypes))
  }
  
  if(proc.debug) {
    console.log("-----Generated cwise routine for ", typesig, ":\n" + code.join("\n") + "\n----------")
  }
  
  var loopName = [(proc.funcName||"unnamed"), "_cwise_loop_", orders[0].join("s"),"m",matched,typeSummary(dtypes)].join("")
  var f = new Function(["function ",loopName,"(", arglist.join(","),"){", code.join("\n"),"} return ", loopName].join(""))
  return f()
}
module.exports = generateCWiseOp

},{"uniq":207}],60:[function(require,module,exports){
"use strict"

// The function below is called when constructing a cwise function object, and does the following:
// A function object is constructed which accepts as argument a compilation function and returns another function.
// It is this other function that is eventually returned by createThunk, and this function is the one that actually
// checks whether a certain pattern of arguments has already been used before and compiles new loops as needed.
// The compilation passed to the first function object is used for compiling new functions.
// Once this function object is created, it is called with compile as argument, where the first argument of compile
// is bound to "proc" (essentially containing a preprocessed version of the user arguments to cwise).
// So createThunk roughly works like this:
// function createThunk(proc) {
//   var thunk = function(compileBound) {
//     var CACHED = {}
//     return function(arrays and scalars) {
//       if (dtype and order of arrays in CACHED) {
//         var func = CACHED[dtype and order of arrays]
//       } else {
//         var func = CACHED[dtype and order of arrays] = compileBound(dtype and order of arrays)
//       }
//       return func(arrays and scalars)
//     }
//   }
//   return thunk(compile.bind1(proc))
// }

var compile = require("./compile.js")

function createThunk(proc) {
  var code = ["'use strict'", "var CACHED={}"]
  var vars = []
  var thunkName = proc.funcName + "_cwise_thunk"
  
  //Build thunk
  code.push(["return function ", thunkName, "(", proc.shimArgs.join(","), "){"].join(""))
  var typesig = []
  var string_typesig = []
  var proc_args = [["array",proc.arrayArgs[0],".shape.slice(", // Slice shape so that we only retain the shape over which we iterate (which gets passed to the cwise operator as SS).
                    Math.max(0,proc.arrayBlockIndices[0]),proc.arrayBlockIndices[0]<0?(","+proc.arrayBlockIndices[0]+")"):")"].join("")]
  var shapeLengthConditions = [], shapeConditions = []
  // Process array arguments
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    var j = proc.arrayArgs[i]
    vars.push(["t", j, "=array", j, ".dtype,",
               "r", j, "=array", j, ".order"].join(""))
    typesig.push("t" + j)
    typesig.push("r" + j)
    string_typesig.push("t"+j)
    string_typesig.push("r"+j+".join()")
    proc_args.push("array" + j + ".data")
    proc_args.push("array" + j + ".stride")
    proc_args.push("array" + j + ".offset|0")
    if (i>0) { // Gather conditions to check for shape equality (ignoring block indices)
      shapeLengthConditions.push("array" + proc.arrayArgs[0] + ".shape.length===array" + j + ".shape.length+" + (Math.abs(proc.arrayBlockIndices[0])-Math.abs(proc.arrayBlockIndices[i])))
      shapeConditions.push("array" + proc.arrayArgs[0] + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[0]) + "]===array" + j + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[i]) + "]")
    }
  }
  // Check for shape equality
  if (proc.arrayArgs.length > 1) {
    code.push("if (!(" + shapeLengthConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same dimensionality!')")
    code.push("for(var shapeIndex=array" + proc.arrayArgs[0] + ".shape.length-" + Math.abs(proc.arrayBlockIndices[0]) + "; shapeIndex-->0;) {")
    code.push("if (!(" + shapeConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same shape!')")
    code.push("}")
  }
  // Process scalar arguments
  for(var i=0; i<proc.scalarArgs.length; ++i) {
    proc_args.push("scalar" + proc.scalarArgs[i])
  }
  // Check for cached function (and if not present, generate it)
  vars.push(["type=[", string_typesig.join(","), "].join()"].join(""))
  vars.push("proc=CACHED[type]")
  code.push("var " + vars.join(","))
  
  code.push(["if(!proc){",
             "CACHED[type]=proc=compile([", typesig.join(","), "])}",
             "return proc(", proc_args.join(","), ")}"].join(""))

  if(proc.debug) {
    console.log("-----Generated thunk:\n" + code.join("\n") + "\n----------")
  }
  
  //Compile thunk
  var thunk = new Function("compile", code.join("\n"))
  return thunk(compile.bind(undefined, proc))
}

module.exports = createThunk

},{"./compile.js":59}],61:[function(require,module,exports){
module.exports = require("cwise-compiler")
},{"cwise-compiler":58}],62:[function(require,module,exports){
!function() {
  var d3 = {
    version: "3.5.17"
  };
  var d3_arraySlice = [].slice, d3_array = function(list) {
    return d3_arraySlice.call(list);
  };
  var d3_document = this.document;
  function d3_documentElement(node) {
    return node && (node.ownerDocument || node.document || node).documentElement;
  }
  function d3_window(node) {
    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
  }
  if (d3_document) {
    try {
      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
    } catch (e) {
      d3_array = function(list) {
        var i = list.length, array = new Array(i);
        while (i--) array[i] = list[i];
        return array;
      };
    }
  }
  if (!Date.now) Date.now = function() {
    return +new Date();
  };
  if (d3_document) {
    try {
      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
    } catch (error) {
      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
      d3_element_prototype.setAttribute = function(name, value) {
        d3_element_setAttribute.call(this, name, value + "");
      };
      d3_element_prototype.setAttributeNS = function(space, local, value) {
        d3_element_setAttributeNS.call(this, space, local, value + "");
      };
      d3_style_prototype.setProperty = function(name, value, priority) {
        d3_style_setProperty.call(this, name, value + "", priority);
      };
    }
  }
  d3.ascending = d3_ascending;
  function d3_ascending(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  function d3_number(x) {
    return x === null ? NaN : +x;
  }
  function d3_numeric(x) {
    return !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
    } else {
      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.mean = function(array, f) {
    var s = 0, n = array.length, a, i = -1, j = n;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
    }
    if (j) return s / j;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.median = function(array, f) {
    var numbers = [], n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
    }
    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
  };
  d3.variance = function(array, f) {
    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) {
        if (d3_numeric(a = d3_number(array[i]))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    } else {
      while (++i < n) {
        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    }
    if (j > 1) return s / (j - 1);
  };
  d3.deviation = function() {
    var v = d3.variance.apply(this, arguments);
    return v ? Math.sqrt(v) : v;
  };
  function d3_bisector(compare) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  }
  var d3_bisect = d3_bisector(d3_ascending);
  d3.bisectLeft = d3_bisect.left;
  d3.bisect = d3.bisectRight = d3_bisect.right;
  d3.bisector = function(f) {
    return d3_bisector(f.length === 1 ? function(d, x) {
      return d3_ascending(f(d), x);
    } : f);
  };
  d3.shuffle = function(array, i0, i1) {
    if ((m = arguments.length) < 3) {
      i1 = array.length;
      if (m < 2) i0 = 0;
    }
    var m = i1 - i0, t, i;
    while (m) {
      i = Math.random() * m-- | 0;
      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
    }
    return array;
  };
  d3.permute = function(array, indexes) {
    var i = indexes.length, permutes = new Array(i);
    while (i--) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.pairs = function(array) {
    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
    return pairs;
  };
  d3.transpose = function(matrix) {
    if (!(n = matrix.length)) return [];
    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
        row[j] = matrix[j][i];
      }
    }
    return transpose;
  };
  function d3_transposeLength(d) {
    return d.length;
  }
  d3.zip = function() {
    return d3.transpose(arguments);
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.merge = function(arrays) {
    var n = arrays.length, m, i = -1, j = 0, merged, array;
    while (++i < n) j += arrays[i].length;
    merged = new Array(j);
    while (--n >= 0) {
      array = arrays[n];
      m = array.length;
      while (--m >= 0) {
        merged[--j] = array[m];
      }
    }
    return merged;
  };
  var abs = Math.abs;
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  function d3_class(ctor, properties) {
    for (var key in properties) {
      Object.defineProperty(ctor.prototype, key, {
        value: properties[key],
        enumerable: false
      });
    }
  }
  d3.map = function(object, f) {
    var map = new d3_Map();
    if (object instanceof d3_Map) {
      object.forEach(function(key, value) {
        map.set(key, value);
      });
    } else if (Array.isArray(object)) {
      var i = -1, n = object.length, o;
      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
    } else {
      for (var key in object) map.set(key, object[key]);
    }
    return map;
  };
  function d3_Map() {
    this._ = Object.create(null);
  }
  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
  d3_class(d3_Map, {
    has: d3_map_has,
    get: function(key) {
      return this._[d3_map_escape(key)];
    },
    set: function(key, value) {
      return this._[d3_map_escape(key)] = value;
    },
    remove: d3_map_remove,
    keys: d3_map_keys,
    values: function() {
      var values = [];
      for (var key in this._) values.push(this._[key]);
      return values;
    },
    entries: function() {
      var entries = [];
      for (var key in this._) entries.push({
        key: d3_map_unescape(key),
        value: this._[key]
      });
      return entries;
    },
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
    }
  });
  function d3_map_escape(key) {
    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
  }
  function d3_map_unescape(key) {
    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
  }
  function d3_map_has(key) {
    return d3_map_escape(key) in this._;
  }
  function d3_map_remove(key) {
    return (key = d3_map_escape(key)) in this._ && delete this._[key];
  }
  function d3_map_keys() {
    var keys = [];
    for (var key in this._) keys.push(d3_map_unescape(key));
    return keys;
  }
  function d3_map_size() {
    var size = 0;
    for (var key in this._) ++size;
    return size;
  }
  function d3_map_empty() {
    for (var key in this._) return false;
    return true;
  }
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(mapType, array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      if (mapType) {
        object = mapType();
        setter = function(keyValue, values) {
          object.set(keyValue, map(mapType, values, depth));
        };
      } else {
        object = {};
        setter = function(keyValue, values) {
          object[keyValue] = map(mapType, values, depth);
        };
      }
      valuesByKey.forEach(setter);
      return object;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var array = [], sortKey = sortKeys[depth++];
      map.forEach(function(key, keyMap) {
        array.push({
          key: key,
          values: entries(keyMap, depth)
        });
      });
      return sortKey ? array.sort(function(a, b) {
        return sortKey(a.key, b.key);
      }) : array;
    }
    nest.map = function(array, mapType) {
      return map(mapType, array, 0);
    };
    nest.entries = function(array) {
      return entries(map(d3.map, array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.set = function(array) {
    var set = new d3_Set();
    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
    return set;
  };
  function d3_Set() {
    this._ = Object.create(null);
  }
  d3_class(d3_Set, {
    has: d3_map_has,
    add: function(key) {
      this._[d3_map_escape(key += "")] = true;
      return key;
    },
    remove: d3_map_remove,
    values: d3_map_keys,
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key));
    }
  });
  d3.behavior = {};
  function d3_identity(d) {
    return d;
  }
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return value === source ? target : value;
    };
  }
  function d3_vendorSymbol(object, name) {
    if (name in object) return name;
    name = name.charAt(0).toUpperCase() + name.slice(1);
    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
      var prefixName = d3_vendorPrefixes[i] + name;
      if (prefixName in object) return prefixName;
    }
  }
  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
  function d3_noop() {}
  d3.dispatch = function() {
    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i >= 0) {
      name = type.slice(i + 1);
      type = type.slice(0, i);
    }
    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
    if (arguments.length === 2) {
      if (listener == null) for (type in this) {
        if (this.hasOwnProperty(type)) this[type].on(name, null);
      }
      return this;
    }
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map();
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.event = null;
  function d3_eventPreventDefault() {
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  var d3_subclass = {}.__proto__ ? function(object, prototype) {
    object.__proto__ = prototype;
  } : function(object, prototype) {
    for (var property in prototype) object[property] = prototype[property];
  };
  function d3_selection(groups) {
    d3_subclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectMatches = function(n, s) {
    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
    d3_selectMatches = function(n, s) {
      return d3_selectMatcher.call(n, s);
    };
    return d3_selectMatches(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = Sizzle;
    d3_selectMatches = Sizzle.matchesSelector;
  }
  d3.selection = function() {
    return d3.select(d3_document.documentElement);
  };
  var d3_selectionPrototype = d3.selection.prototype = [];
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_selectAll(selector, this);
    };
  }
  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: d3_nsXhtml,
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3_selectionPrototype.attr = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node();
        name = d3.ns.qualify(name);
        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
      }
      for (value in name) this.each(d3_selection_attr(value, name[value]));
      return this;
    }
    return this.each(d3_selection_attr(name, value));
  };
  function d3_selection_attr(name, value) {
    name = d3.ns.qualify(name);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
  }
  function d3_collapse(s) {
    return s.trim().replace(/\s+/g, " ");
  }
  d3_selectionPrototype.classed = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
        if (value = node.classList) {
          while (++i < n) if (!value.contains(name[i])) return false;
        } else {
          value = node.getAttribute("class");
          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
        }
        return true;
      }
      for (value in name) this.each(d3_selection_classed(value, name[value]));
      return this;
    }
    return this.each(d3_selection_classed(name, value));
  };
  function d3_selection_classedRe(name) {
    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
  }
  function d3_selection_classes(name) {
    return (name + "").trim().split(/^|\s+/);
  }
  function d3_selection_classed(name, value) {
    name = d3_selection_classes(name).map(d3_selection_classedName);
    var n = name.length;
    function classedConstant() {
      var i = -1;
      while (++i < n) name[i](this, value);
    }
    function classedFunction() {
      var i = -1, x = value.apply(this, arguments);
      while (++i < n) name[i](this, x);
    }
    return typeof value === "function" ? classedFunction : classedConstant;
  }
  function d3_selection_classedName(name) {
    var re = d3_selection_classedRe(name);
    return function(node, value) {
      if (c = node.classList) return value ? c.add(name) : c.remove(name);
      var c = node.getAttribute("class") || "";
      if (value) {
        re.lastIndex = 0;
        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
      } else {
        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
      }
    };
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
        return this;
      }
      if (n < 2) {
        var node = this.node();
        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
      }
      priority = "";
    }
    return this.each(d3_selection_style(name, value, priority));
  };
  function d3_selection_style(name, value, priority) {
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
  }
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") return this.node()[name];
      for (value in name) this.each(d3_selection_property(value, name[value]));
      return this;
    }
    return this.each(d3_selection_property(name, value));
  };
  function d3_selection_property(name, value) {
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
  }
  d3_selectionPrototype.text = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    }) : this.node().textContent;
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    }) : this.node().innerHTML;
  };
  d3_selectionPrototype.append = function(name) {
    name = d3_selection_creator(name);
    return this.select(function() {
      return this.appendChild(name.apply(this, arguments));
    });
  };
  function d3_selection_creator(name) {
    function create() {
      var document = this.ownerDocument, namespace = this.namespaceURI;
      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
    }
    function createNS() {
      return this.ownerDocument.createElementNS(name.space, name.local);
    }
    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
  }
  d3_selectionPrototype.insert = function(name, before) {
    name = d3_selection_creator(name);
    before = d3_selection_selector(before);
    return this.select(function() {
      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
    });
  };
  d3_selectionPrototype.remove = function() {
    return this.each(d3_selectionRemove);
  };
  function d3_selectionRemove() {
    var parent = this.parentNode;
    if (parent) parent.removeChild(this);
  }
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
        for (i = -1; ++i < n; ) {
          if (node = group[i]) {
            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
              exitNodes[i] = node;
            } else {
              nodeByKeyValue.set(keyValue, node);
            }
            keyValues[i] = keyValue;
          }
        }
        for (i = -1; ++i < m; ) {
          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          } else if (node !== true) {
            updateNodes[i] = node;
            node.__data__ = nodeData;
          }
          nodeByKeyValue.set(keyValue, true);
        }
        for (i = -1; ++i < n; ) {
          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
        }
        for (;i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
        }
        for (;i < n; ++i) {
          exitNodes[i] = group[i];
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = function(value) {
    return arguments.length ? this.property("__data__", value) : this.property("__data__");
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3_ascending;
    return function(a, b) {
      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
    };
  }
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    var args = d3_array(arguments);
    callback.apply(args[0] = this, args);
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function() {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.size = function() {
    var n = 0;
    d3_selection_each(this, function() {
      ++n;
    });
    return n;
  };
  function d3_selection_enter(selection) {
    d3_subclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  d3_selection_enterPrototype.insert = function(name, before) {
    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
    return d3_selectionPrototype.insert.call(this, name, before);
  };
  function d3_selection_enterInsertBefore(enter) {
    var i0, j0;
    return function(d, i, j) {
      var group = enter[j].update, n = group.length, node;
      if (j != j0) j0 = j, i0 = 0;
      if (i >= i0) i0 = i + 1;
      while (!(node = group[i0]) && ++i0 < n) ;
      return node;
    };
  }
  d3.select = function(node) {
    var group;
    if (typeof node === "string") {
      group = [ d3_select(node, d3_document) ];
      group.parentNode = d3_document.documentElement;
    } else {
      group = [ node ];
      group.parentNode = d3_documentElement(node);
    }
    return d3_selection([ group ]);
  };
  d3.selectAll = function(nodes) {
    var group;
    if (typeof nodes === "string") {
      group = d3_array(d3_selectAll(nodes, d3_document));
      group.parentNode = d3_document.documentElement;
    } else {
      group = d3_array(nodes);
      group.parentNode = null;
    }
    return d3_selection([ group ]);
  };
  d3_selectionPrototype.on = function(type, listener, capture) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof type !== "string") {
        if (n < 2) listener = false;
        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
        return this;
      }
      if (n < 2) return (n = this.node()["__on" + type]) && n._;
      capture = false;
    }
    return this.each(d3_selection_on(type, listener, capture));
  };
  function d3_selection_on(type, listener, capture) {
    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
    if (i > 0) type = type.slice(0, i);
    var filter = d3_selection_onFilters.get(type);
    if (filter) type = filter, wrap = d3_selection_onFilter;
    function onRemove() {
      var l = this[name];
      if (l) {
        this.removeEventListener(type, l, l.$);
        delete this[name];
      }
    }
    function onAdd() {
      var l = wrap(listener, d3_array(arguments));
      onRemove.call(this);
      this.addEventListener(type, this[name] = l, l.$ = capture);
      l._ = listener;
    }
    function removeAll() {
      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
      for (var name in this) {
        if (match = name.match(re)) {
          var l = this[name];
          this.removeEventListener(match[1], l, l.$);
          delete this[name];
        }
      }
    }
    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
  }
  var d3_selection_onFilters = d3.map({
    mouseenter: "mouseover",
    mouseleave: "mouseout"
  });
  if (d3_document) {
    d3_selection_onFilters.forEach(function(k) {
      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
    });
  }
  function d3_selection_onListener(listener, argumentz) {
    return function(e) {
      var o = d3.event;
      d3.event = e;
      argumentz[0] = this.__data__;
      try {
        listener.apply(this, argumentz);
      } finally {
        d3.event = o;
      }
    };
  }
  function d3_selection_onFilter(listener, argumentz) {
    var l = d3_selection_onListener(listener, argumentz);
    return function(e) {
      var target = this, related = e.relatedTarget;
      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
        l.call(target, e);
      }
    };
  }
  var d3_event_dragSelect, d3_event_dragId = 0;
  function d3_event_dragSuppress(node) {
    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
    if (d3_event_dragSelect == null) {
      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
    }
    if (d3_event_dragSelect) {
      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
      style[d3_event_dragSelect] = "none";
    }
    return function(suppressClick) {
      w.on(name, null);
      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
      if (suppressClick) {
        var off = function() {
          w.on(click, null);
        };
        w.on(click, function() {
          d3_eventPreventDefault();
          off();
        }, true);
        setTimeout(off, 0);
      }
    };
  }
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    if (e.changedTouches) e = e.changedTouches[0];
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0) {
        var window = d3_window(container);
        if (window.scrollX || window.scrollY) {
          svg = d3.select("body").append("svg").style({
            position: "absolute",
            top: 0,
            left: 0,
            margin: 0,
            padding: 0,
            border: "none"
          }, "important");
          var ctm = svg[0][0].getScreenCTM();
          d3_mouse_bug44083 = !(ctm.f || ctm.e);
          svg.remove();
        }
      }
      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
      point.y = e.clientY;
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touch = function(container, touches, identifier) {
    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
      if ((touch = touches[i]).identifier === identifier) {
        return d3_mousePoint(container, touch);
      }
    }
  };
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
    }
    function dragstart(id, position, subject, move, end) {
      return function() {
        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
        if (origin) {
          dragOffset = origin.apply(that, arguments);
          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
        } else {
          dragOffset = [ 0, 0 ];
        }
        dispatch({
          type: "dragstart"
        });
        function moved() {
          var position1 = position(parent, dragId), dx, dy;
          if (!position1) return;
          dx = position1[0] - position0[0];
          dy = position1[1] - position0[1];
          dragged |= dx | dy;
          position0 = position1;
          dispatch({
            type: "drag",
            x: position1[0] + dragOffset[0],
            y: position1[1] + dragOffset[1],
            dx: dx,
            dy: dy
          });
        }
        function ended() {
          if (!position(parent, dragId)) return;
          dragSubject.on(move + dragName, null).on(end + dragName, null);
          dragRestore(dragged);
          dispatch({
            type: "dragend"
          });
        }
      };
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  function d3_behavior_dragTouchId() {
    return d3.event.changedTouches[0].identifier;
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
  function d3_sgn(x) {
    return x > 0 ? 1 : x < 0 ? -1 : 0;
  }
  function d3_cross2d(a, b, c) {
    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
  }
  function d3_acos(x) {
    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
  }
  function d3_asin(x) {
    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
  }
  function d3_sinh(x) {
    return ((x = Math.exp(x)) - 1 / x) / 2;
  }
  function d3_cosh(x) {
    return ((x = Math.exp(x)) + 1 / x) / 2;
  }
  function d3_tanh(x) {
    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
  }
  function d3_haversin(x) {
    return (x = Math.sin(x / 2)) * x;
  }
  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
  d3.interpolateZoom = function(p0, p1) {
    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
    if (d2 < ε2) {
      S = Math.log(w1 / w0) / ρ;
      i = function(t) {
        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
      };
    } else {
      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
      S = (r1 - r0) / ρ;
      i = function(t) {
        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
      };
    }
    i.duration = S * 1e3;
    return i;
  };
  d3.behavior.zoom = function() {
    var view = {
      x: 0,
      y: 0,
      k: 1
    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
    if (!d3_behavior_zoomWheel) {
      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return d3.event.wheelDelta;
      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
        return -d3.event.detail;
      }, "MozMousePixelScroll");
    }
    function zoom(g) {
      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
    }
    zoom.event = function(g) {
      g.each(function() {
        var dispatch = event.of(this, arguments), view1 = view;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.zoom", function() {
            view = this.__chart__ || {
              x: 0,
              y: 0,
              k: 1
            };
            zoomstarted(dispatch);
          }).tween("zoom:zoom", function() {
            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
            return function(t) {
              var l = i(t), k = dx / l[2];
              this.__chart__ = view = {
                x: cx - l[0] * k,
                y: cy - l[1] * k,
                k: k
              };
              zoomed(dispatch);
            };
          }).each("interrupt.zoom", function() {
            zoomended(dispatch);
          }).each("end.zoom", function() {
            zoomended(dispatch);
          });
        } else {
          this.__chart__ = view;
          zoomstarted(dispatch);
          zoomed(dispatch);
          zoomended(dispatch);
        }
      });
    };
    zoom.translate = function(_) {
      if (!arguments.length) return [ view.x, view.y ];
      view = {
        x: +_[0],
        y: +_[1],
        k: view.k
      };
      rescale();
      return zoom;
    };
    zoom.scale = function(_) {
      if (!arguments.length) return view.k;
      view = {
        x: view.x,
        y: view.y,
        k: null
      };
      scaleTo(+_);
      rescale();
      return zoom;
    };
    zoom.scaleExtent = function(_) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.center = function(_) {
      if (!arguments.length) return center;
      center = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.size = function(_) {
      if (!arguments.length) return size;
      size = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.duration = function(_) {
      if (!arguments.length) return duration;
      duration = +_;
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    function location(p) {
      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
    }
    function point(l) {
      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
    }
    function scaleTo(s) {
      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      view.x += p[0] - l[0];
      view.y += p[1] - l[1];
    }
    function zoomTo(that, p, l, k) {
      that.__chart__ = {
        x: view.x,
        y: view.y,
        k: view.k
      };
      scaleTo(Math.pow(2, k));
      translateTo(center0 = p, l);
      that = d3.select(that);
      if (duration > 0) that = that.transition().duration(duration);
      that.call(zoom.event);
    }
    function rescale() {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - view.x) / view.k;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - view.y) / view.k;
      }).map(y0.invert));
    }
    function zoomstarted(dispatch) {
      if (!zooming++) dispatch({
        type: "zoomstart"
      });
    }
    function zoomed(dispatch) {
      rescale();
      dispatch({
        type: "zoom",
        scale: view.k,
        translate: [ view.x, view.y ]
      });
    }
    function zoomended(dispatch) {
      if (!--zooming) dispatch({
        type: "zoomend"
      }), center0 = null;
    }
    function mousedowned() {
      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
      d3_selection_interrupt.call(that);
      zoomstarted(dispatch);
      function moved() {
        dragged = 1;
        translateTo(d3.mouse(that), location0);
        zoomed(dispatch);
      }
      function ended() {
        subject.on(mousemove, null).on(mouseup, null);
        dragRestore(dragged);
        zoomended(dispatch);
      }
    }
    function touchstarted() {
      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
      started();
      zoomstarted(dispatch);
      subject.on(mousedown, null).on(touchstart, started);
      function relocate() {
        var touches = d3.touches(that);
        scale0 = view.k;
        touches.forEach(function(t) {
          if (t.identifier in locations0) locations0[t.identifier] = location(t);
        });
        return touches;
      }
      function started() {
        var target = d3.event.target;
        d3.select(target).on(touchmove, moved).on(touchend, ended);
        targets.push(target);
        var changed = d3.event.changedTouches;
        for (var i = 0, n = changed.length; i < n; ++i) {
          locations0[changed[i].identifier] = null;
        }
        var touches = relocate(), now = Date.now();
        if (touches.length === 1) {
          if (now - touchtime < 500) {
            var p = touches[0];
            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
            d3_eventPreventDefault();
          }
          touchtime = now;
        } else if (touches.length > 1) {
          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
          distance0 = dx * dx + dy * dy;
        }
      }
      function moved() {
        var touches = d3.touches(that), p0, l0, p1, l1;
        d3_selection_interrupt.call(that);
        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
          p1 = touches[i];
          if (l1 = locations0[p1.identifier]) {
            if (l0) break;
            p0 = p1, l0 = l1;
          }
        }
        if (l1) {
          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
          scaleTo(scale1 * scale0);
        }
        touchtime = null;
        translateTo(p0, l0);
        zoomed(dispatch);
      }
      function ended() {
        if (d3.event.touches.length) {
          var changed = d3.event.changedTouches;
          for (var i = 0, n = changed.length; i < n; ++i) {
            delete locations0[changed[i].identifier];
          }
          for (var identifier in locations0) {
            return void relocate();
          }
        }
        d3.selectAll(targets).on(zoomName, null);
        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
        dragRestore();
        zoomended(dispatch);
      }
    }
    function mousewheeled() {
      var dispatch = event.of(this, arguments);
      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
      mousewheelTimer = setTimeout(function() {
        mousewheelTimer = null;
        zoomended(dispatch);
      }, 50);
      d3_eventPreventDefault();
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
      translateTo(center0, translate0);
      zoomed(dispatch);
    }
    function dblclicked() {
      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
  d3.color = d3_color;
  function d3_color() {}
  d3_color.prototype.toString = function() {
    return this.rgb() + "";
  };
  d3.hsl = d3_hsl;
  function d3_hsl(h, s, l) {
    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
  }
  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
  d3_hslPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, this.l / k);
  };
  d3_hslPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, k * this.l);
  };
  d3_hslPrototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  d3.hcl = d3_hcl;
  function d3_hcl(h, c, l) {
    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
  }
  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
  d3_hclPrototype.brighter = function(k) {
    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.darker = function(k) {
    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.rgb = function() {
    return d3_hcl_lab(this.h, this.c, this.l).rgb();
  };
  function d3_hcl_lab(h, c, l) {
    if (isNaN(h)) h = 0;
    if (isNaN(c)) c = 0;
    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
  }
  d3.lab = d3_lab;
  function d3_lab(l, a, b) {
    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
  }
  var d3_lab_K = 18;
  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
  var d3_labPrototype = d3_lab.prototype = new d3_color();
  d3_labPrototype.brighter = function(k) {
    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.darker = function(k) {
    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.rgb = function() {
    return d3_lab_rgb(this.l, this.a, this.b);
  };
  function d3_lab_rgb(l, a, b) {
    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
    x = d3_lab_xyz(x) * d3_lab_X;
    y = d3_lab_xyz(y) * d3_lab_Y;
    z = d3_lab_xyz(z) * d3_lab_Z;
    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
  }
  function d3_lab_hcl(l, a, b) {
    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
  }
  function d3_lab_xyz(x) {
    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
  }
  function d3_xyz_lab(x) {
    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
  }
  function d3_xyz_rgb(r) {
    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
  }
  d3.rgb = d3_rgb;
  function d3_rgb(r, g, b) {
    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
  }
  function d3_rgbNumber(value) {
    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
  }
  function d3_rgbString(value) {
    return d3_rgbNumber(value) + "";
  }
  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
  d3_rgbPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return new d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
  };
  d3_rgbPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_rgb(k * this.r, k * this.g, k * this.b);
  };
  d3_rgbPrototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_rgbPrototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, color;
    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }

       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (color = d3_rgb_names.get(format)) {
      return rgb(color.r, color.g, color.b);
    }
    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
      if (format.length === 4) {
        r = (color & 3840) >> 4;
        r = r >> 4 | r;
        g = color & 240;
        g = g >> 4 | g;
        b = color & 15;
        b = b << 4 | b;
      } else if (format.length === 7) {
        r = (color & 16711680) >> 16;
        g = (color & 65280) >> 8;
        b = color & 255;
      }
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      h = NaN;
      s = l > 0 && l < 1 ? 0 : h;
    }
    return new d3_hsl(h, s, l);
  }
  function d3_rgb_lab(r, g, b) {
    r = d3_rgb_xyz(r);
    g = d3_rgb_xyz(g);
    b = d3_rgb_xyz(b);
    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
  }
  function d3_rgb_xyz(r) {
    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: 15792383,
    antiquewhite: 16444375,
    aqua: 65535,
    aquamarine: 8388564,
    azure: 15794175,
    beige: 16119260,
    bisque: 16770244,
    black: 0,
    blanchedalmond: 16772045,
    blue: 255,
    blueviolet: 9055202,
    brown: 10824234,
    burlywood: 14596231,
    cadetblue: 6266528,
    chartreuse: 8388352,
    chocolate: 13789470,
    coral: 16744272,
    cornflowerblue: 6591981,
    cornsilk: 16775388,
    crimson: 14423100,
    cyan: 65535,
    darkblue: 139,
    darkcyan: 35723,
    darkgoldenrod: 12092939,
    darkgray: 11119017,
    darkgreen: 25600,
    darkgrey: 11119017,
    darkkhaki: 12433259,
    darkmagenta: 9109643,
    darkolivegreen: 5597999,
    darkorange: 16747520,
    darkorchid: 10040012,
    darkred: 9109504,
    darksalmon: 15308410,
    darkseagreen: 9419919,
    darkslateblue: 4734347,
    darkslategray: 3100495,
    darkslategrey: 3100495,
    darkturquoise: 52945,
    darkviolet: 9699539,
    deeppink: 16716947,
    deepskyblue: 49151,
    dimgray: 6908265,
    dimgrey: 6908265,
    dodgerblue: 2003199,
    firebrick: 11674146,
    floralwhite: 16775920,
    forestgreen: 2263842,
    fuchsia: 16711935,
    gainsboro: 14474460,
    ghostwhite: 16316671,
    gold: 16766720,
    goldenrod: 14329120,
    gray: 8421504,
    green: 32768,
    greenyellow: 11403055,
    grey: 8421504,
    honeydew: 15794160,
    hotpink: 16738740,
    indianred: 13458524,
    indigo: 4915330,
    ivory: 16777200,
    khaki: 15787660,
    lavender: 15132410,
    lavenderblush: 16773365,
    lawngreen: 8190976,
    lemonchiffon: 16775885,
    lightblue: 11393254,
    lightcoral: 15761536,
    lightcyan: 14745599,
    lightgoldenrodyellow: 16448210,
    lightgray: 13882323,
    lightgreen: 9498256,
    lightgrey: 13882323,
    lightpink: 16758465,
    lightsalmon: 16752762,
    lightseagreen: 2142890,
    lightskyblue: 8900346,
    lightslategray: 7833753,
    lightslategrey: 7833753,
    lightsteelblue: 11584734,
    lightyellow: 16777184,
    lime: 65280,
    limegreen: 3329330,
    linen: 16445670,
    magenta: 16711935,
    maroon: 8388608,
    mediumaquamarine: 6737322,
    mediumblue: 205,
    mediumorchid: 12211667,
    mediumpurple: 9662683,
    mediumseagreen: 3978097,
    mediumslateblue: 8087790,
    mediumspringgreen: 64154,
    mediumturquoise: 4772300,
    mediumvioletred: 13047173,
    midnightblue: 1644912,
    mintcream: 16121850,
    mistyrose: 16770273,
    moccasin: 16770229,
    navajowhite: 16768685,
    navy: 128,
    oldlace: 16643558,
    olive: 8421376,
    olivedrab: 7048739,
    orange: 16753920,
    orangered: 16729344,
    orchid: 14315734,
    palegoldenrod: 15657130,
    palegreen: 10025880,
    paleturquoise: 11529966,
    palevioletred: 14381203,
    papayawhip: 16773077,
    peachpuff: 16767673,
    peru: 13468991,
    pink: 16761035,
    plum: 14524637,
    powderblue: 11591910,
    purple: 8388736,
    rebeccapurple: 6697881,
    red: 16711680,
    rosybrown: 12357519,
    royalblue: 4286945,
    saddlebrown: 9127187,
    salmon: 16416882,
    sandybrown: 16032864,
    seagreen: 3050327,
    seashell: 16774638,
    sienna: 10506797,
    silver: 12632256,
    skyblue: 8900331,
    slateblue: 6970061,
    slategray: 7372944,
    slategrey: 7372944,
    snow: 16775930,
    springgreen: 65407,
    steelblue: 4620980,
    tan: 13808780,
    teal: 32896,
    thistle: 14204888,
    tomato: 16737095,
    turquoise: 4251856,
    violet: 15631086,
    wheat: 16113331,
    white: 16777215,
    whitesmoke: 16119285,
    yellow: 16776960,
    yellowgreen: 10145074
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgbNumber(value));
  });
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  d3.xhr = d3_xhrType(d3_identity);
  function d3_xhrType(response) {
    return function(url, mimeType, callback) {
      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
      mimeType = null;
      return d3_xhr(url, mimeType, response, callback);
    };
  }
  function d3_xhr(url, mimeType, response, callback) {
    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
      request.readyState > 3 && respond();
    };
    function respond() {
      var status = request.status, result;
      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
        try {
          result = response.call(xhr, request);
        } catch (e) {
          dispatch.error.call(xhr, e);
          return;
        }
        dispatch.load.call(xhr, result);
      } else {
        dispatch.error.call(xhr, request);
      }
    }
    request.onprogress = function(event) {
      var o = d3.event;
      d3.event = event;
      try {
        dispatch.progress.call(xhr, request);
      } finally {
        d3.event = o;
      }
    };
    xhr.header = function(name, value) {
      name = (name + "").toLowerCase();
      if (arguments.length < 2) return headers[name];
      if (value == null) delete headers[name]; else headers[name] = value + "";
      return xhr;
    };
    xhr.mimeType = function(value) {
      if (!arguments.length) return mimeType;
      mimeType = value == null ? null : value + "";
      return xhr;
    };
    xhr.responseType = function(value) {
      if (!arguments.length) return responseType;
      responseType = value;
      return xhr;
    };
    xhr.response = function(value) {
      response = value;
      return xhr;
    };
    [ "get", "post" ].forEach(function(method) {
      xhr[method] = function() {
        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
      };
    });
    xhr.send = function(method, data, callback) {
      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
      request.open(method, url, true);
      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
      if (responseType != null) request.responseType = responseType;
      if (callback != null) xhr.on("error", callback).on("load", function(request) {
        callback(null, request);
      });
      dispatch.beforesend.call(xhr, request);
      request.send(data == null ? null : data);
      return xhr;
    };
    xhr.abort = function() {
      request.abort();
      return xhr;
    };
    d3.rebind(xhr, dispatch, "on");
    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
  }
  function d3_xhr_fixCallback(callback) {
    return callback.length === 1 ? function(error, request) {
      callback(error == null ? request : null);
    } : callback;
  }
  function d3_xhrHasResponse(request) {
    var type = request.responseType;
    return type && type !== "text" ? request.response : request.responseText;
  }
  d3.dsv = function(delimiter, mimeType) {
    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
    function dsv(url, row, callback) {
      if (arguments.length < 3) callback = row, row = null;
      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
      xhr.row = function(_) {
        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
      };
      return xhr;
    }
    function response(request) {
      return dsv.parse(request.responseText);
    }
    function typedResponse(f) {
      return function(request) {
        return dsv.parse(request.responseText, f);
      };
    }
    dsv.parse = function(text, f) {
      var o;
      return dsv.parseRows(text, function(row, i) {
        if (o) return o(row, i - 1);
        var a = new Function("d", "return {" + row.map(function(name, i) {
          return JSON.stringify(name) + ": d[" + i + "]";
        }).join(",") + "}");
        o = f ? function(row, i) {
          return f(a(row), i);
        } : a;
      });
    };
    dsv.parseRows = function(text, f) {
      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
      function token() {
        if (I >= N) return EOF;
        if (eol) return eol = false, EOL;
        var j = I;
        if (text.charCodeAt(j) === 34) {
          var i = j;
          while (i++ < N) {
            if (text.charCodeAt(i) === 34) {
              if (text.charCodeAt(i + 1) !== 34) break;
              ++i;
            }
          }
          I = i + 2;
          var c = text.charCodeAt(i + 1);
          if (c === 13) {
            eol = true;
            if (text.charCodeAt(i + 2) === 10) ++I;
          } else if (c === 10) {
            eol = true;
          }
          return text.slice(j + 1, i).replace(/""/g, '"');
        }
        while (I < N) {
          var c = text.charCodeAt(I++), k = 1;
          if (c === 10) eol = true; else if (c === 13) {
            eol = true;
            if (text.charCodeAt(I) === 10) ++I, ++k;
          } else if (c !== delimiterCode) continue;
          return text.slice(j, I - k);
        }
        return text.slice(j);
      }
      while ((t = token()) !== EOF) {
        var a = [];
        while (t !== EOL && t !== EOF) {
          a.push(t);
          t = token();
        }
        if (f && (a = f(a, n++)) == null) continue;
        rows.push(a);
      }
      return rows;
    };
    dsv.format = function(rows) {
      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
      var fieldSet = new d3_Set(), fields = [];
      rows.forEach(function(row) {
        for (var field in row) {
          if (!fieldSet.has(field)) {
            fields.push(fieldSet.add(field));
          }
        }
      });
      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
        return fields.map(function(field) {
          return formatValue(row[field]);
        }).join(delimiter);
      })).join("\n");
    };
    dsv.formatRows = function(rows) {
      return rows.map(formatRow).join("\n");
    };
    function formatRow(row) {
      return row.map(formatValue).join(delimiter);
    }
    function formatValue(text) {
      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
    }
    return dsv;
  };
  d3.csv = d3.dsv(",", "text/csv");
  d3.tsv = d3.dsv("	", "text/tab-separated-values");
  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
    setTimeout(callback, 17);
  };
  d3.timer = function() {
    d3_timer.apply(this, arguments);
  };
  function d3_timer(callback, delay, then) {
    var n = arguments.length;
    if (n < 2) delay = 0;
    if (n < 3) then = Date.now();
    var time = then + delay, timer = {
      c: callback,
      t: time,
      n: null
    };
    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
    d3_timer_queueTail = timer;
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
    return timer;
  }
  function d3_timer_step() {
    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    d3_timer_mark();
    d3_timer_sweep();
  };
  function d3_timer_mark() {
    var now = Date.now(), timer = d3_timer_queueHead;
    while (timer) {
      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
      timer = timer.n;
    }
    return now;
  }
  function d3_timer_sweep() {
    var t0, t1 = d3_timer_queueHead, time = Infinity;
    while (t1) {
      if (t1.c) {
        if (t1.t < time) time = t1.t;
        t1 = (t0 = t1).n;
      } else {
        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
      }
    }
    d3_timer_queueTail = t0;
    return time;
  }
  function d3_format_precision(x, p) {
    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
  }
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value = +value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  function d3_locale_numberFormat(locale) {
    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
      while (i > 0 && g > 0) {
        if (length + g + 1 > width) g = Math.max(1, width - length);
        t.push(value.substring(i -= g, i + g));
        if ((length += g + 1) > width) break;
        g = locale_grouping[j = (j + 1) % locale_grouping.length];
      }
      return t.reverse().join(locale_thousands);
    } : d3_identity;
    return function(specifier) {
      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
      if (precision) precision = +precision.substring(1);
      if (zfill || fill === "0" && align === "=") {
        zfill = fill = "0";
        align = "=";
      }
      switch (type) {
       case "n":
        comma = true;
        type = "g";
        break;

       case "%":
        scale = 100;
        suffix = "%";
        type = "f";
        break;

       case "p":
        scale = 100;
        suffix = "%";
        type = "r";
        break;

       case "b":
       case "o":
       case "x":
       case "X":
        if (symbol === "#") prefix = "0" + type.toLowerCase();

       case "c":
        exponent = false;

       case "d":
        integer = true;
        precision = 0;
        break;

       case "s":
        scale = -1;
        type = "r";
        break;
      }
      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
      if (type == "r" && !precision) type = "g";
      if (precision != null) {
        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
      }
      type = d3_format_types.get(type) || d3_format_typeDefault;
      var zcomma = zfill && comma;
      return function(value) {
        var fullSuffix = suffix;
        if (integer && value % 1) return "";
        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
        if (scale < 0) {
          var unit = d3.formatPrefix(value, precision);
          value = unit.scale(value);
          fullSuffix = unit.symbol + suffix;
        } else {
          value *= scale;
        }
        value = type(value, precision);
        var i = value.lastIndexOf("."), before, after;
        if (i < 0) {
          var j = exponent ? value.lastIndexOf("e") : -1;
          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
        } else {
          before = value.substring(0, i);
          after = locale_decimal + value.substring(i + 1);
        }
        if (!zfill && comma) before = formatGroup(before, Infinity);
        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
        negative += prefix;
        value = before + after;
        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
      };
    };
  }
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
  var d3_format_types = d3.map({
    b: function(x) {
      return x.toString(2);
    },
    c: function(x) {
      return String.fromCharCode(x);
    },
    o: function(x) {
      return x.toString(8);
    },
    x: function(x) {
      return x.toString(16);
    },
    X: function(x) {
      return x.toString(16).toUpperCase();
    },
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
    }
  });
  function d3_format_typeDefault(x) {
    return x + "";
  }
  var d3_time = d3.time = {}, d3_date = Date;
  function d3_date_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_date_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_date(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_date(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_date = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_date = Date;
      }
    };
  }
  d3_time.year = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3_time.years = d3_time.year.range;
  d3_time.years.utc = d3_time.year.utc.range;
  d3_time.day = d3_time_interval(function(date) {
    var day = new d3_date(2e3, 0);
    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3_time.days = d3_time.day.range;
  d3_time.days.utc = d3_time.day.utc.range;
  d3_time.dayOfYear = function(date) {
    var year = d3_time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
    i = 7 - i;
    var interval = d3_time[day] = d3_time_interval(function(date) {
      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3_time[day + "s"] = interval.range;
    d3_time[day + "s"].utc = interval.utc.range;
    d3_time[day + "OfYear"] = function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3_time.week = d3_time.sunday;
  d3_time.weeks = d3_time.sunday.range;
  d3_time.weeks.utc = d3_time.sunday.utc.range;
  d3_time.weekOfYear = d3_time.sundayOfYear;
  function d3_locale_timeFormat(locale) {
    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
    function d3_time_format(template) {
      var n = template.length;
      function format(date) {
        var string = [], i = -1, j = 0, c, p, f;
        while (++i < n) {
          if (template.charCodeAt(i) === 37) {
            string.push(template.slice(j, i));
            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
            string.push(c);
            j = i + 1;
          }
        }
        string.push(template.slice(j, i));
        return string.join("");
      }
      format.parse = function(string) {
        var d = {
          y: 1900,
          m: 0,
          d: 1,
          H: 0,
          M: 0,
          S: 0,
          L: 0,
          Z: null
        }, i = d3_time_parse(d, template, string, 0);
        if (i != string.length) return null;
        if ("p" in d) d.H = d.H % 12 + d.p * 12;
        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
          date.setFullYear(d.y, 0, 1);
          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
        } else date.setFullYear(d.y, d.m, d.d);
        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
        return localZ ? date._ : date;
      };
      format.toString = function() {
        return template;
      };
      return format;
    }
    function d3_time_parse(date, template, string, j) {
      var c, p, t, i = 0, n = template.length, m = string.length;
      while (i < n) {
        if (j >= m) return -1;
        c = template.charCodeAt(i++);
        if (c === 37) {
          t = template.charAt(i++);
          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
          if (!p || (j = p(date, string, j)) < 0) return -1;
        } else if (c != string.charCodeAt(j++)) {
          return -1;
        }
      }
      return j;
    }
    d3_time_format.utc = function(template) {
      var local = d3_time_format(template);
      function format(date) {
        try {
          d3_date = d3_date_utc;
          var utc = new d3_date();
          utc._ = date;
          return local(utc);
        } finally {
          d3_date = Date;
        }
      }
      format.parse = function(string) {
        try {
          d3_date = d3_date_utc;
          var date = local.parse(string);
          return date && date._;
        } finally {
          d3_date = Date;
        }
      };
      format.toString = local.toString;
      return format;
    };
    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
    locale_periods.forEach(function(p, i) {
      d3_time_periodLookup.set(p.toLowerCase(), i);
    });
    var d3_time_formats = {
      a: function(d) {
        return locale_shortDays[d.getDay()];
      },
      A: function(d) {
        return locale_days[d.getDay()];
      },
      b: function(d) {
        return locale_shortMonths[d.getMonth()];
      },
      B: function(d) {
        return locale_months[d.getMonth()];
      },
      c: d3_time_format(locale_dateTime),
      d: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      e: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      H: function(d, p) {
        return d3_time_formatPad(d.getHours(), p, 2);
      },
      I: function(d, p) {
        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
      },
      j: function(d, p) {
        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
      },
      L: function(d, p) {
        return d3_time_formatPad(d.getMilliseconds(), p, 3);
      },
      m: function(d, p) {
        return d3_time_formatPad(d.getMonth() + 1, p, 2);
      },
      M: function(d, p) {
        return d3_time_formatPad(d.getMinutes(), p, 2);
      },
      p: function(d) {
        return locale_periods[+(d.getHours() >= 12)];
      },
      S: function(d, p) {
        return d3_time_formatPad(d.getSeconds(), p, 2);
      },
      U: function(d, p) {
        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
      },
      w: function(d) {
        return d.getDay();
      },
      W: function(d, p) {
        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
      },
      x: d3_time_format(locale_date),
      X: d3_time_format(locale_time),
      y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
      },
      Y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
      },
      Z: d3_time_zone,
      "%": function() {
        return "%";
      }
    };
    var d3_time_parsers = {
      a: d3_time_parseWeekdayAbbrev,
      A: d3_time_parseWeekday,
      b: d3_time_parseMonthAbbrev,
      B: d3_time_parseMonth,
      c: d3_time_parseLocaleFull,
      d: d3_time_parseDay,
      e: d3_time_parseDay,
      H: d3_time_parseHour24,
      I: d3_time_parseHour24,
      j: d3_time_parseDayOfYear,
      L: d3_time_parseMilliseconds,
      m: d3_time_parseMonthNumber,
      M: d3_time_parseMinutes,
      p: d3_time_parseAmPm,
      S: d3_time_parseSeconds,
      U: d3_time_parseWeekNumberSunday,
      w: d3_time_parseWeekdayNumber,
      W: d3_time_parseWeekNumberMonday,
      x: d3_time_parseLocaleDate,
      X: d3_time_parseLocaleTime,
      y: d3_time_parseYear,
      Y: d3_time_parseFullYear,
      Z: d3_time_parseZone,
      "%": d3_time_parseLiteralPercent
    };
    function d3_time_parseWeekdayAbbrev(date, string, i) {
      d3_time_dayAbbrevRe.lastIndex = 0;
      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseWeekday(date, string, i) {
      d3_time_dayRe.lastIndex = 0;
      var n = d3_time_dayRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonthAbbrev(date, string, i) {
      d3_time_monthAbbrevRe.lastIndex = 0;
      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonth(date, string, i) {
      d3_time_monthRe.lastIndex = 0;
      var n = d3_time_monthRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseLocaleFull(date, string, i) {
      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
    }
    function d3_time_parseLocaleDate(date, string, i) {
      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
    }
    function d3_time_parseLocaleTime(date, string, i) {
      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
    }
    function d3_time_parseAmPm(date, string, i) {
      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
      return n == null ? -1 : (date.p = n, i);
    }
    return d3_time_format;
  }
  var d3_time_formatPads = {
    "-": "",
    _: " ",
    "0": "0"
  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
  function d3_time_formatPad(value, fill, width) {
    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
  }
  function d3_time_formatRe(names) {
    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
  }
  function d3_time_formatLookup(names) {
    var map = new d3_Map(), i = -1, n = names.length;
    while (++i < n) map.set(names[i].toLowerCase(), i);
    return map;
  }
  function d3_time_parseWeekdayNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
    return n ? (date.w = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberSunday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.U = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberMonday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.W = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
    return n ? (date.y = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
  }
  function d3_time_parseZone(date, string, i) {
    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
    i + 5) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.d = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseDayOfYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.j = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.H = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.M = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.S = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.L = +n[0], i + n[0].length) : -1;
  }
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
  }
  function d3_time_parseLiteralPercent(date, string, i) {
    d3_time_percentRe.lastIndex = 0;
    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
    return n ? i + n[0].length : -1;
  }
  function d3_time_formatMulti(formats) {
    var n = formats.length, i = -1;
    while (++i < n) formats[i][0] = this(formats[i][0]);
    return function(date) {
      var i = 0, f = formats[i];
      while (!f[1](date)) f = formats[++i];
      return f[0](date);
    };
  }
  d3.locale = function(locale) {
    return {
      numberFormat: d3_locale_numberFormat(locale),
      timeFormat: d3_locale_timeFormat(locale)
    };
  };
  var d3_locale_enUS = d3.locale({
    decimal: ".",
    thousands: ",",
    grouping: [ 3 ],
    currency: [ "$", "" ],
    dateTime: "%a %b %e %X %Y",
    date: "%m/%d/%Y",
    time: "%H:%M:%S",
    periods: [ "AM", "PM" ],
    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
  });
  d3.format = d3_locale_enUS.numberFormat;
  d3.geo = {};
  function d3_adder() {}
  d3_adder.prototype = {
    s: 0,
    t: 0,
    add: function(y) {
      d3_adderSum(y, this.t, d3_adderTemp);
      d3_adderSum(d3_adderTemp.s, this.s, this);
      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
    },
    reset: function() {
      this.s = this.t = 0;
    },
    valueOf: function() {
      return this.s;
    }
  };
  var d3_adderTemp = new d3_adder();
  function d3_adderSum(a, b, o) {
    var x = o.s = a + b, bv = x - a, av = x - bv;
    o.t = a - av + (b - bv);
  }
  d3.geo.stream = function(object, listener) {
    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
      d3_geo_streamObjectType[object.type](object, listener);
    } else {
      d3_geo_streamGeometry(object, listener);
    }
  };
  function d3_geo_streamGeometry(geometry, listener) {
    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
      d3_geo_streamGeometryType[geometry.type](geometry, listener);
    }
  }
  var d3_geo_streamObjectType = {
    Feature: function(feature, listener) {
      d3_geo_streamGeometry(feature.geometry, listener);
    },
    FeatureCollection: function(object, listener) {
      var features = object.features, i = -1, n = features.length;
      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
    }
  };
  var d3_geo_streamGeometryType = {
    Sphere: function(object, listener) {
      listener.sphere();
    },
    Point: function(object, listener) {
      object = object.coordinates;
      listener.point(object[0], object[1], object[2]);
    },
    MultiPoint: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
    },
    LineString: function(object, listener) {
      d3_geo_streamLine(object.coordinates, listener, 0);
    },
    MultiLineString: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
    },
    Polygon: function(object, listener) {
      d3_geo_streamPolygon(object.coordinates, listener);
    },
    MultiPolygon: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
    },
    GeometryCollection: function(object, listener) {
      var geometries = object.geometries, i = -1, n = geometries.length;
      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
    }
  };
  function d3_geo_streamLine(coordinates, listener, closed) {
    var i = -1, n = coordinates.length - closed, coordinate;
    listener.lineStart();
    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
    listener.lineEnd();
  }
  function d3_geo_streamPolygon(coordinates, listener) {
    var i = -1, n = coordinates.length;
    listener.polygonStart();
    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
    listener.polygonEnd();
  }
  d3.geo.area = function(object) {
    d3_geo_areaSum = 0;
    d3.geo.stream(object, d3_geo_area);
    return d3_geo_areaSum;
  };
  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
  var d3_geo_area = {
    sphere: function() {
      d3_geo_areaSum += 4 * π;
    },
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_areaRingSum.reset();
      d3_geo_area.lineStart = d3_geo_areaRingStart;
    },
    polygonEnd: function() {
      var area = 2 * d3_geo_areaRingSum;
      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
    }
  };
  function d3_geo_areaRingStart() {
    var λ00, φ00, λ0, cosφ0, sinφ0;
    d3_geo_area.point = function(λ, φ) {
      d3_geo_area.point = nextPoint;
      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
      sinφ0 = Math.sin(φ);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      φ = φ * d3_radians / 2 + π / 4;
      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
      d3_geo_areaRingSum.add(Math.atan2(v, u));
      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
    }
    d3_geo_area.lineEnd = function() {
      nextPoint(λ00, φ00);
    };
  }
  function d3_geo_cartesian(spherical) {
    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
  }
  function d3_geo_cartesianDot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
  }
  function d3_geo_cartesianCross(a, b) {
    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
  }
  function d3_geo_cartesianAdd(a, b) {
    a[0] += b[0];
    a[1] += b[1];
    a[2] += b[2];
  }
  function d3_geo_cartesianScale(vector, k) {
    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
  }
  function d3_geo_cartesianNormalize(d) {
    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
    d[0] /= l;
    d[1] /= l;
    d[2] /= l;
  }
  function d3_geo_spherical(cartesian) {
    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
  }
  function d3_geo_sphericalEqual(a, b) {
    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
  }
  d3.geo.bounds = function() {
    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
    var bound = {
      point: point,
      lineStart: lineStart,
      lineEnd: lineEnd,
      polygonStart: function() {
        bound.point = ringPoint;
        bound.lineStart = ringStart;
        bound.lineEnd = ringEnd;
        dλSum = 0;
        d3_geo_area.polygonStart();
      },
      polygonEnd: function() {
        d3_geo_area.polygonEnd();
        bound.point = point;
        bound.lineStart = lineStart;
        bound.lineEnd = lineEnd;
        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
        range[0] = λ0, range[1] = λ1;
      }
    };
    function point(λ, φ) {
      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
      if (φ < φ0) φ0 = φ;
      if (φ > φ1) φ1 = φ;
    }
    function linePoint(λ, φ) {
      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
      if (p0) {
        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
        d3_geo_cartesianNormalize(inflection);
        inflection = d3_geo_spherical(inflection);
        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = inflection[1] * d3_degrees;
          if (φi > φ1) φ1 = φi;
        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = -inflection[1] * d3_degrees;
          if (φi < φ0) φ0 = φi;
        } else {
          if (φ < φ0) φ0 = φ;
          if (φ > φ1) φ1 = φ;
        }
        if (antimeridian) {
          if (λ < λ_) {
            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
          } else {
            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
          }
        } else {
          if (λ1 >= λ0) {
            if (λ < λ0) λ0 = λ;
            if (λ > λ1) λ1 = λ;
          } else {
            if (λ > λ_) {
              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
            } else {
              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
            }
          }
        }
      } else {
        point(λ, φ);
      }
      p0 = p, λ_ = λ;
    }
    function lineStart() {
      bound.point = linePoint;
    }
    function lineEnd() {
      range[0] = λ0, range[1] = λ1;
      bound.point = point;
      p0 = null;
    }
    function ringPoint(λ, φ) {
      if (p0) {
        var dλ = λ - λ_;
        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
      } else λ__ = λ, φ__ = φ;
      d3_geo_area.point(λ, φ);
      linePoint(λ, φ);
    }
    function ringStart() {
      d3_geo_area.lineStart();
    }
    function ringEnd() {
      ringPoint(λ__, φ__);
      d3_geo_area.lineEnd();
      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
      range[0] = λ0, range[1] = λ1;
      p0 = null;
    }
    function angle(λ0, λ1) {
      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
    }
    function compareRanges(a, b) {
      return a[0] - b[0];
    }
    function withinRange(x, range) {
      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
    }
    return function(feature) {
      φ1 = λ1 = -(λ0 = φ0 = Infinity);
      ranges = [];
      d3.geo.stream(feature, bound);
      var n = ranges.length;
      if (n) {
        ranges.sort(compareRanges);
        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
          b = ranges[i];
          if (withinRange(b[0], a) || withinRange(b[1], a)) {
            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
          } else {
            merged.push(a = b);
          }
        }
        var best = -Infinity, dλ;
        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
          b = merged[i];
          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
        }
      }
      ranges = range = null;
      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
    };
  }();
  d3.geo.centroid = function(object) {
    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
    d3.geo.stream(object, d3_geo_centroid);
    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
    if (m < ε2) {
      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
      m = x * x + y * y + z * z;
      if (m < ε2) return [ NaN, NaN ];
    }
    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
  };
  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
  var d3_geo_centroid = {
    sphere: d3_noop,
    point: d3_geo_centroidPoint,
    lineStart: d3_geo_centroidLineStart,
    lineEnd: d3_geo_centroidLineEnd,
    polygonStart: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
    }
  };
  function d3_geo_centroidPoint(λ, φ) {
    λ *= d3_radians;
    var cosφ = Math.cos(φ *= d3_radians);
    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
  }
  function d3_geo_centroidPointXYZ(x, y, z) {
    ++d3_geo_centroidW0;
    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
  }
  function d3_geo_centroidLineStart() {
    var x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroid.point = nextPoint;
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_centroidLineEnd() {
    d3_geo_centroid.point = d3_geo_centroidPoint;
  }
  function d3_geo_centroidRingStart() {
    var λ00, φ00, x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ00 = λ, φ00 = φ;
      d3_geo_centroid.point = nextPoint;
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    d3_geo_centroid.lineEnd = function() {
      nextPoint(λ00, φ00);
      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
      d3_geo_centroid.point = d3_geo_centroidPoint;
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
      d3_geo_centroidX2 += v * cx;
      d3_geo_centroidY2 += v * cy;
      d3_geo_centroidZ2 += v * cz;
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_compose(a, b) {
    function compose(x, y) {
      return x = a(x, y), b(x[0], x[1]);
    }
    if (a.invert && b.invert) compose.invert = function(x, y) {
      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
    };
    return compose;
  }
  function d3_true() {
    return true;
  }
  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
    var subject = [], clip = [];
    segments.forEach(function(segment) {
      if ((n = segment.length - 1) <= 0) return;
      var n, p0 = segment[0], p1 = segment[n];
      if (d3_geo_sphericalEqual(p0, p1)) {
        listener.lineStart();
        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
        listener.lineEnd();
        return;
      }
      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
      a.o = b;
      subject.push(a);
      clip.push(b);
      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
      a.o = b;
      subject.push(a);
      clip.push(b);
    });
    clip.sort(compare);
    d3_geo_clipPolygonLinkCircular(subject);
    d3_geo_clipPolygonLinkCircular(clip);
    if (!subject.length) return;
    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
      clip[i].e = entry = !entry;
    }
    var start = subject[0], points, point;
    while (1) {
      var current = start, isSubject = true;
      while (current.v) if ((current = current.n) === start) return;
      points = current.z;
      listener.lineStart();
      do {
        current.v = current.o.v = true;
        if (current.e) {
          if (isSubject) {
            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.n.x, 1, listener);
          }
          current = current.n;
        } else {
          if (isSubject) {
            points = current.p.z;
            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.p.x, -1, listener);
          }
          current = current.p;
        }
        current = current.o;
        points = current.z;
        isSubject = !isSubject;
      } while (!current.v);
      listener.lineEnd();
    }
  }
  function d3_geo_clipPolygonLinkCircular(array) {
    if (!(n = array.length)) return;
    var n, i = 0, a = array[0], b;
    while (++i < n) {
      a.n = b = array[i];
      b.p = a;
      a = b;
    }
    a.n = b = array[0];
    b.p = a;
  }
  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
    this.x = point;
    this.z = points;
    this.o = other;
    this.e = entry;
    this.v = false;
    this.n = this.p = null;
  }
  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
    return function(rotate, listener) {
      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          clip.point = pointRing;
          clip.lineStart = ringStart;
          clip.lineEnd = ringEnd;
          segments = [];
          polygon = [];
        },
        polygonEnd: function() {
          clip.point = point;
          clip.lineStart = lineStart;
          clip.lineEnd = lineEnd;
          segments = d3.merge(segments);
          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
          if (segments.length) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
          } else if (clipStartInside) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            interpolate(null, null, 1, listener);
            listener.lineEnd();
          }
          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
          segments = polygon = null;
        },
        sphere: function() {
          listener.polygonStart();
          listener.lineStart();
          interpolate(null, null, 1, listener);
          listener.lineEnd();
          listener.polygonEnd();
        }
      };
      function point(λ, φ) {
        var point = rotate(λ, φ);
        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
      }
      function pointLine(λ, φ) {
        var point = rotate(λ, φ);
        line.point(point[0], point[1]);
      }
      function lineStart() {
        clip.point = pointLine;
        line.lineStart();
      }
      function lineEnd() {
        clip.point = point;
        line.lineEnd();
      }
      var segments;
      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
      function pointRing(λ, φ) {
        ring.push([ λ, φ ]);
        var point = rotate(λ, φ);
        ringListener.point(point[0], point[1]);
      }
      function ringStart() {
        ringListener.lineStart();
        ring = [];
      }
      function ringEnd() {
        pointRing(ring[0][0], ring[0][1]);
        ringListener.lineEnd();
        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
        ring.pop();
        polygon.push(ring);
        ring = null;
        if (!n) return;
        if (clean & 1) {
          segment = ringSegments[0];
          var n = segment.length - 1, i = -1, point;
          if (n > 0) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            while (++i < n) listener.point((point = segment[i])[0], point[1]);
            listener.lineEnd();
          }
          return;
        }
        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
      }
      return clip;
    };
  }
  function d3_geo_clipSegmentLength1(segment) {
    return segment.length > 1;
  }
  function d3_geo_clipBufferListener() {
    var lines = [], line;
    return {
      lineStart: function() {
        lines.push(line = []);
      },
      point: function(λ, φ) {
        line.push([ λ, φ ]);
      },
      lineEnd: d3_noop,
      buffer: function() {
        var buffer = lines;
        lines = [];
        line = null;
        return buffer;
      },
      rejoin: function() {
        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
      }
    };
  }
  function d3_geo_clipSort(a, b) {
    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
  }
  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
  function d3_geo_clipAntimeridianLine(listener) {
    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
    return {
      lineStart: function() {
        listener.lineStart();
        clean = 1;
      },
      point: function(λ1, φ1) {
        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
        if (abs(dλ - π) < ε) {
          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          listener.point(λ1, φ0);
          clean = 0;
        } else if (sλ0 !== sλ1 && dλ >= π) {
          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          clean = 0;
        }
        listener.point(λ0 = λ1, φ0 = φ1);
        sλ0 = sλ1;
      },
      lineEnd: function() {
        listener.lineEnd();
        λ0 = φ0 = NaN;
      },
      clean: function() {
        return 2 - clean;
      }
    };
  }
  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
  }
  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
    var φ;
    if (from == null) {
      φ = direction * halfπ;
      listener.point(-π, φ);
      listener.point(0, φ);
      listener.point(π, φ);
      listener.point(π, 0);
      listener.point(π, -φ);
      listener.point(0, -φ);
      listener.point(-π, -φ);
      listener.point(-π, 0);
      listener.point(-π, φ);
    } else if (abs(from[0] - to[0]) > ε) {
      var s = from[0] < to[0] ? π : -π;
      φ = direction * s / 2;
      listener.point(-s, φ);
      listener.point(0, φ);
      listener.point(s, φ);
    } else {
      listener.point(to[0], to[1]);
    }
  }
  function d3_geo_pointInPolygon(point, polygon) {
    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
    d3_geo_areaRingSum.reset();
    for (var i = 0, n = polygon.length; i < n; ++i) {
      var ring = polygon[i], m = ring.length;
      if (!m) continue;
      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
      while (true) {
        if (j === m) j = 0;
        point = ring[j];
        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
          d3_geo_cartesianNormalize(arc);
          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
          d3_geo_cartesianNormalize(intersection);
          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
          }
        }
        if (!j++) break;
        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
      }
    }
    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
  }
  function d3_geo_clipCircle(radius) {
    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
    function visible(λ, φ) {
      return Math.cos(λ) * Math.cos(φ) > cr;
    }
    function clipLine(listener) {
      var point0, c0, v0, v00, clean;
      return {
        lineStart: function() {
          v00 = v0 = false;
          clean = 1;
        },
        point: function(λ, φ) {
          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
          if (!point0 && (v00 = v0 = v)) listener.lineStart();
          if (v !== v0) {
            point2 = intersect(point0, point1);
            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
              point1[0] += ε;
              point1[1] += ε;
              v = visible(point1[0], point1[1]);
            }
          }
          if (v !== v0) {
            clean = 0;
            if (v) {
              listener.lineStart();
              point2 = intersect(point1, point0);
              listener.point(point2[0], point2[1]);
            } else {
              point2 = intersect(point0, point1);
              listener.point(point2[0], point2[1]);
              listener.lineEnd();
            }
            point0 = point2;
          } else if (notHemisphere && point0 && smallRadius ^ v) {
            var t;
            if (!(c & c0) && (t = intersect(point1, point0, true))) {
              clean = 0;
              if (smallRadius) {
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
              } else {
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
              }
            }
          }
          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
            listener.point(point1[0], point1[1]);
          }
          point0 = point1, v0 = v, c0 = c;
        },
        lineEnd: function() {
          if (v0) listener.lineEnd();
          point0 = null;
        },
        clean: function() {
          return clean | (v00 && v0) << 1;
        }
      };
    }
    function intersect(a, b, two) {
      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
      if (!determinant) return !two && a;
      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
      d3_geo_cartesianAdd(A, B);
      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
      if (t2 < 0) return;
      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
      d3_geo_cartesianAdd(q, A);
      q = d3_geo_spherical(q);
      if (!two) return q;
      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
        d3_geo_cartesianAdd(q1, A);
        return [ q, d3_geo_spherical(q1) ];
      }
    }
    function code(λ, φ) {
      var r = smallRadius ? radius : π - radius, code = 0;
      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
      return code;
    }
  }
  function d3_geom_clipLine(x0, y0, x1, y1) {
    return function(line) {
      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
      r = x0 - ax;
      if (!dx && r > 0) return;
      r /= dx;
      if (dx < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dx > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = x1 - ax;
      if (!dx && r < 0) return;
      r /= dx;
      if (dx < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dx > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      r = y0 - ay;
      if (!dy && r > 0) return;
      r /= dy;
      if (dy < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dy > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = y1 - ay;
      if (!dy && r < 0) return;
      r /= dy;
      if (dy < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dy > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      if (t0 > 0) line.a = {
        x: ax + t0 * dx,
        y: ay + t0 * dy
      };
      if (t1 < 1) line.b = {
        x: ax + t1 * dx,
        y: ay + t1 * dy
      };
      return line;
    };
  }
  var d3_geo_clipExtentMAX = 1e9;
  d3.geo.clipExtent = function() {
    var x0, y0, x1, y1, stream, clip, clipExtent = {
      stream: function(output) {
        if (stream) stream.valid = false;
        stream = clip(output);
        stream.valid = true;
        return stream;
      },
      extent: function(_) {
        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
        if (stream) stream.valid = false, stream = null;
        return clipExtent;
      }
    };
    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
  };
  function d3_geo_clipExtent(x0, y0, x1, y1) {
    return function(listener) {
      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          listener = bufferListener;
          segments = [];
          polygon = [];
          clean = true;
        },
        polygonEnd: function() {
          listener = listener_;
          segments = d3.merge(segments);
          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
          if (inside || visible) {
            listener.polygonStart();
            if (inside) {
              listener.lineStart();
              interpolate(null, null, 1, listener);
              listener.lineEnd();
            }
            if (visible) {
              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
            }
            listener.polygonEnd();
          }
          segments = polygon = ring = null;
        }
      };
      function insidePolygon(p) {
        var wn = 0, n = polygon.length, y = p[1];
        for (var i = 0; i < n; ++i) {
          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
            b = v[j];
            if (a[1] <= y) {
              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
            } else {
              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
            }
            a = b;
          }
        }
        return wn !== 0;
      }
      function interpolate(from, to, direction, listener) {
        var a = 0, a1 = 0;
        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
          do {
            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
          } while ((a = (a + direction + 4) % 4) !== a1);
        } else {
          listener.point(to[0], to[1]);
        }
      }
      function pointVisible(x, y) {
        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
      }
      function point(x, y) {
        if (pointVisible(x, y)) listener.point(x, y);
      }
      var x__, y__, v__, x_, y_, v_, first, clean;
      function lineStart() {
        clip.point = linePoint;
        if (polygon) polygon.push(ring = []);
        first = true;
        v_ = false;
        x_ = y_ = NaN;
      }
      function lineEnd() {
        if (segments) {
          linePoint(x__, y__);
          if (v__ && v_) bufferListener.rejoin();
          segments.push(bufferListener.buffer());
        }
        clip.point = point;
        if (v_) listener.lineEnd();
      }
      function linePoint(x, y) {
        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
        var v = pointVisible(x, y);
        if (polygon) ring.push([ x, y ]);
        if (first) {
          x__ = x, y__ = y, v__ = v;
          first = false;
          if (v) {
            listener.lineStart();
            listener.point(x, y);
          }
        } else {
          if (v && v_) listener.point(x, y); else {
            var l = {
              a: {
                x: x_,
                y: y_
              },
              b: {
                x: x,
                y: y
              }
            };
            if (clipLine(l)) {
              if (!v_) {
                listener.lineStart();
                listener.point(l.a.x, l.a.y);
              }
              listener.point(l.b.x, l.b.y);
              if (!v) listener.lineEnd();
              clean = false;
            } else if (v) {
              listener.lineStart();
              listener.point(x, y);
              clean = false;
            }
          }
        }
        x_ = x, y_ = y, v_ = v;
      }
      return clip;
    };
    function corner(p, direction) {
      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
    }
    function compare(a, b) {
      return comparePoints(a.x, b.x);
    }
    function comparePoints(a, b) {
      var ca = corner(a, 1), cb = corner(b, 1);
      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
    }
  }
  function d3_geo_conic(projectAt) {
    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
    p.parallels = function(_) {
      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
    };
    return p;
  }
  function d3_geo_conicEqualArea(φ0, φ1) {
    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
    function forward(λ, φ) {
      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = ρ0 - y;
      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
    };
    return forward;
  }
  (d3.geo.conicEqualArea = function() {
    return d3_geo_conic(d3_geo_conicEqualArea);
  }).raw = d3_geo_conicEqualArea;
  d3.geo.albers = function() {
    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
  };
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
    var point, pointStream = {
      point: function(x, y) {
        point = [ x, y ];
      }
    }, lower48Point, alaskaPoint, hawaiiPoint;
    function albersUsa(coordinates) {
      var x = coordinates[0], y = coordinates[1];
      point = null;
      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
      return point;
    }
    albersUsa.invert = function(coordinates) {
      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
    };
    albersUsa.stream = function(stream) {
      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
      return {
        point: function(x, y) {
          lower48Stream.point(x, y);
          alaskaStream.point(x, y);
          hawaiiStream.point(x, y);
        },
        sphere: function() {
          lower48Stream.sphere();
          alaskaStream.sphere();
          hawaiiStream.sphere();
        },
        lineStart: function() {
          lower48Stream.lineStart();
          alaskaStream.lineStart();
          hawaiiStream.lineStart();
        },
        lineEnd: function() {
          lower48Stream.lineEnd();
          alaskaStream.lineEnd();
          hawaiiStream.lineEnd();
        },
        polygonStart: function() {
          lower48Stream.polygonStart();
          alaskaStream.polygonStart();
          hawaiiStream.polygonStart();
        },
        polygonEnd: function() {
          lower48Stream.polygonEnd();
          alaskaStream.polygonEnd();
          hawaiiStream.polygonEnd();
        }
      };
    };
    albersUsa.precision = function(_) {
      if (!arguments.length) return lower48.precision();
      lower48.precision(_);
      alaska.precision(_);
      hawaii.precision(_);
      return albersUsa;
    };
    albersUsa.scale = function(_) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(_);
      alaska.scale(_ * .35);
      hawaii.scale(_);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(_) {
      if (!arguments.length) return lower48.translate();
      var k = lower48.scale(), x = +_[0], y = +_[1];
      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      return albersUsa;
    };
    return albersUsa.scale(1070);
  };
  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_pathAreaPolygon = 0;
      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
    }
  };
  function d3_geo_pathAreaRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathArea.point = function(x, y) {
      d3_geo_pathArea.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
      x0 = x, y0 = y;
    }
    d3_geo_pathArea.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
  var d3_geo_pathBounds = {
    point: d3_geo_pathBoundsPoint,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_pathBoundsPoint(x, y) {
    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
  }
  function d3_geo_pathBuffer() {
    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointCircle = d3_geo_pathBufferCircle(_);
        return stream;
      },
      result: function() {
        if (buffer.length) {
          var result = buffer.join("");
          buffer = [];
          return result;
        }
      }
    };
    function point(x, y) {
      buffer.push("M", x, ",", y, pointCircle);
    }
    function pointLineStart(x, y) {
      buffer.push("M", x, ",", y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      buffer.push("L", x, ",", y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      buffer.push("Z");
    }
    return stream;
  }
  function d3_geo_pathBufferCircle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
  }
  var d3_geo_pathCentroid = {
    point: d3_geo_pathCentroidPoint,
    lineStart: d3_geo_pathCentroidLineStart,
    lineEnd: d3_geo_pathCentroidLineEnd,
    polygonStart: function() {
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
    }
  };
  function d3_geo_pathCentroidPoint(x, y) {
    d3_geo_centroidX0 += x;
    d3_geo_centroidY0 += y;
    ++d3_geo_centroidZ0;
  }
  function d3_geo_pathCentroidLineStart() {
    var x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
  }
  function d3_geo_pathCentroidLineEnd() {
    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
  }
  function d3_geo_pathCentroidRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      z = y0 * x - x0 * y;
      d3_geo_centroidX2 += z * (x0 + x);
      d3_geo_centroidY2 += z * (y0 + y);
      d3_geo_centroidZ2 += z * 3;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
    d3_geo_pathCentroid.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  function d3_geo_pathContext(context) {
    var pointRadius = 4.5;
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointRadius = _;
        return stream;
      },
      result: d3_noop
    };
    function point(x, y) {
      context.moveTo(x + pointRadius, y);
      context.arc(x, y, pointRadius, 0, τ);
    }
    function pointLineStart(x, y) {
      context.moveTo(x, y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      context.lineTo(x, y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      context.closePath();
    }
    return stream;
  }
  function d3_geo_resample(project) {
    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
    function resample(stream) {
      return (maxDepth ? resampleRecursive : resampleNone)(stream);
    }
    function resampleNone(stream) {
      return d3_geo_transformPoint(stream, function(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      });
    }
    function resampleRecursive(stream) {
      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
      var resample = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          stream.polygonStart();
          resample.lineStart = ringStart;
        },
        polygonEnd: function() {
          stream.polygonEnd();
          resample.lineStart = lineStart;
        }
      };
      function point(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      }
      function lineStart() {
        x0 = NaN;
        resample.point = linePoint;
        stream.lineStart();
      }
      function linePoint(λ, φ) {
        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
        stream.point(x0, y0);
      }
      function lineEnd() {
        resample.point = point;
        stream.lineEnd();
      }
      function ringStart() {
        lineStart();
        resample.point = ringPoint;
        resample.lineEnd = ringEnd;
      }
      function ringPoint(λ, φ) {
        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
        resample.point = linePoint;
      }
      function ringEnd() {
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
        resample.lineEnd = lineEnd;
        lineEnd();
      }
      return resample;
    }
    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
      if (d2 > 4 * δ2 && depth--) {
        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
          stream.point(x2, y2);
          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
        }
      }
    }
    resample.precision = function(_) {
      if (!arguments.length) return Math.sqrt(δ2);
      maxDepth = (δ2 = _ * _) > 0 && 16;
      return resample;
    };
    return resample;
  }
  d3.geo.path = function() {
    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
    function path(object) {
      if (object) {
        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
        d3.geo.stream(object, cacheStream);
      }
      return contextStream.result();
    }
    path.area = function(object) {
      d3_geo_pathAreaSum = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathArea));
      return d3_geo_pathAreaSum;
    };
    path.centroid = function(object) {
      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
    };
    path.bounds = function(object) {
      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
    };
    path.projection = function(_) {
      if (!arguments.length) return projection;
      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
      return reset();
    };
    path.context = function(_) {
      if (!arguments.length) return context;
      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
      return reset();
    };
    path.pointRadius = function(_) {
      if (!arguments.length) return pointRadius;
      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
      return path;
    };
    function reset() {
      cacheStream = null;
      return path;
    }
    return path.projection(d3.geo.albersUsa()).context(null);
  };
  function d3_geo_pathProjectStream(project) {
    var resample = d3_geo_resample(function(x, y) {
      return project([ x * d3_degrees, y * d3_degrees ]);
    });
    return function(stream) {
      return d3_geo_projectionRadians(resample(stream));
    };
  }
  d3.geo.transform = function(methods) {
    return {
      stream: function(stream) {
        var transform = new d3_geo_transform(stream);
        for (var k in methods) transform[k] = methods[k];
        return transform;
      }
    };
  };
  function d3_geo_transform(stream) {
    this.stream = stream;
  }
  d3_geo_transform.prototype = {
    point: function(x, y) {
      this.stream.point(x, y);
    },
    sphere: function() {
      this.stream.sphere();
    },
    lineStart: function() {
      this.stream.lineStart();
    },
    lineEnd: function() {
      this.stream.lineEnd();
    },
    polygonStart: function() {
      this.stream.polygonStart();
    },
    polygonEnd: function() {
      this.stream.polygonEnd();
    }
  };
  function d3_geo_transformPoint(stream, point) {
    return {
      point: point,
      sphere: function() {
        stream.sphere();
      },
      lineStart: function() {
        stream.lineStart();
      },
      lineEnd: function() {
        stream.lineEnd();
      },
      polygonStart: function() {
        stream.polygonStart();
      },
      polygonEnd: function() {
        stream.polygonEnd();
      }
    };
  }
  d3.geo.projection = d3_geo_projection;
  d3.geo.projectionMutator = d3_geo_projectionMutator;
  function d3_geo_projection(project) {
    return d3_geo_projectionMutator(function() {
      return project;
    })();
  }
  function d3_geo_projectionMutator(projectAt) {
    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
      x = project(x, y);
      return [ x[0] * k + δx, δy - x[1] * k ];
    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
    function projection(point) {
      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
      return [ point[0] * k + δx, δy - point[1] * k ];
    }
    function invert(point) {
      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
    }
    projection.stream = function(output) {
      if (stream) stream.valid = false;
      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
      stream.valid = true;
      return stream;
    };
    projection.clipAngle = function(_) {
      if (!arguments.length) return clipAngle;
      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
      return invalidate();
    };
    projection.clipExtent = function(_) {
      if (!arguments.length) return clipExtent;
      clipExtent = _;
      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
      return invalidate();
    };
    projection.scale = function(_) {
      if (!arguments.length) return k;
      k = +_;
      return reset();
    };
    projection.translate = function(_) {
      if (!arguments.length) return [ x, y ];
      x = +_[0];
      y = +_[1];
      return reset();
    };
    projection.center = function(_) {
      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
      λ = _[0] % 360 * d3_radians;
      φ = _[1] % 360 * d3_radians;
      return reset();
    };
    projection.rotate = function(_) {
      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
      δλ = _[0] % 360 * d3_radians;
      δφ = _[1] % 360 * d3_radians;
      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
      return reset();
    };
    d3.rebind(projection, projectResample, "precision");
    function reset() {
      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
      var center = project(λ, φ);
      δx = x - center[0] * k;
      δy = y + center[1] * k;
      return invalidate();
    }
    function invalidate() {
      if (stream) stream.valid = false, stream = null;
      return projection;
    }
    return function() {
      project = projectAt.apply(this, arguments);
      projection.invert = project.invert && invert;
      return reset();
    };
  }
  function d3_geo_projectionRadians(stream) {
    return d3_geo_transformPoint(stream, function(x, y) {
      stream.point(x * d3_radians, y * d3_radians);
    });
  }
  function d3_geo_equirectangular(λ, φ) {
    return [ λ, φ ];
  }
  (d3.geo.equirectangular = function() {
    return d3_geo_projection(d3_geo_equirectangular);
  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
  d3.geo.rotation = function(rotate) {
    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
    function forward(coordinates) {
      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    }
    forward.invert = function(coordinates) {
      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    };
    return forward;
  };
  function d3_geo_identityRotation(λ, φ) {
    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
  }
  d3_geo_identityRotation.invert = d3_geo_equirectangular;
  function d3_geo_rotation(δλ, δφ, δγ) {
    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
  }
  function d3_geo_forwardRotationλ(δλ) {
    return function(λ, φ) {
      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
    };
  }
  function d3_geo_rotationλ(δλ) {
    var rotation = d3_geo_forwardRotationλ(δλ);
    rotation.invert = d3_geo_forwardRotationλ(-δλ);
    return rotation;
  }
  function d3_geo_rotationφγ(δφ, δγ) {
    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
    function rotation(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
    }
    rotation.invert = function(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
    };
    return rotation;
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
    function circle() {
      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
      interpolate(null, null, 1, {
        point: function(x, y) {
          ring.push(x = rotate(x, y));
          x[0] *= d3_degrees, x[1] *= d3_degrees;
        }
      });
      return {
        type: "Polygon",
        coordinates: [ ring ]
      };
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return angle;
      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
      return circle;
    };
    circle.precision = function(_) {
      if (!arguments.length) return precision;
      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
      return circle;
    };
    return circle.angle(90);
  };
  function d3_geo_circleInterpolate(radius, precision) {
    var cr = Math.cos(radius), sr = Math.sin(radius);
    return function(from, to, direction, listener) {
      var step = direction * precision;
      if (from != null) {
        from = d3_geo_circleAngle(cr, from);
        to = d3_geo_circleAngle(cr, to);
        if (direction > 0 ? from < to : from > to) from += direction * τ;
      } else {
        from = radius + direction * τ;
        to = radius - .5 * step;
      }
      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
      }
    };
  }
  function d3_geo_circleAngle(cr, point) {
    var a = d3_geo_cartesian(point);
    a[0] -= cr;
    d3_geo_cartesianNormalize(a);
    var angle = d3_acos(-a[1]);
    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
  }
  d3.geo.distance = function(a, b) {
    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
  };
  d3.geo.graticule = function() {
    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
    function graticule() {
      return {
        type: "MultiLineString",
        coordinates: lines()
      };
    }
    function lines() {
      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
        return abs(x % DX) > ε;
      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
        return abs(y % DY) > ε;
      }).map(y));
    }
    graticule.lines = function() {
      return lines().map(function(coordinates) {
        return {
          type: "LineString",
          coordinates: coordinates
        };
      });
    };
    graticule.outline = function() {
      return {
        type: "Polygon",
        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
      };
    };
    graticule.extent = function(_) {
      if (!arguments.length) return graticule.minorExtent();
      return graticule.majorExtent(_).minorExtent(_);
    };
    graticule.majorExtent = function(_) {
      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
      X0 = +_[0][0], X1 = +_[1][0];
      Y0 = +_[0][1], Y1 = +_[1][1];
      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
      return graticule.precision(precision);
    };
    graticule.minorExtent = function(_) {
      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
      x0 = +_[0][0], x1 = +_[1][0];
      y0 = +_[0][1], y1 = +_[1][1];
      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
      return graticule.precision(precision);
    };
    graticule.step = function(_) {
      if (!arguments.length) return graticule.minorStep();
      return graticule.majorStep(_).minorStep(_);
    };
    graticule.majorStep = function(_) {
      if (!arguments.length) return [ DX, DY ];
      DX = +_[0], DY = +_[1];
      return graticule;
    };
    graticule.minorStep = function(_) {
      if (!arguments.length) return [ dx, dy ];
      dx = +_[0], dy = +_[1];
      return graticule;
    };
    graticule.precision = function(_) {
      if (!arguments.length) return precision;
      precision = +_;
      x = d3_geo_graticuleX(y0, y1, 90);
      y = d3_geo_graticuleY(x0, x1, precision);
      X = d3_geo_graticuleX(Y0, Y1, 90);
      Y = d3_geo_graticuleY(X0, X1, precision);
      return graticule;
    };
    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
  };
  function d3_geo_graticuleX(y0, y1, dy) {
    var y = d3.range(y0, y1 - ε, dy).concat(y1);
    return function(x) {
      return y.map(function(y) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_graticuleY(x0, x1, dx) {
    var x = d3.range(x0, x1 - ε, dx).concat(x1);
    return function(y) {
      return x.map(function(x) {
        return [ x, y ];
      });
    };
  }
  function d3_source(d) {
    return d.source;
  }
  function d3_target(d) {
    return d.target;
  }
  d3.geo.greatArc = function() {
    var source = d3_source, source_, target = d3_target, target_;
    function greatArc() {
      return {
        type: "LineString",
        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
      };
    }
    greatArc.distance = function() {
      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _, source_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _, target_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.precision = function() {
      return arguments.length ? greatArc : 0;
    };
    return greatArc;
  };
  d3.geo.interpolate = function(source, target) {
    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
  };
  function d3_geo_interpolate(x0, y0, x1, y1) {
    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
    var interpolate = d ? function(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
    } : function() {
      return [ x0 * d3_degrees, y0 * d3_degrees ];
    };
    interpolate.distance = d;
    return interpolate;
  }
  d3.geo.length = function(object) {
    d3_geo_lengthSum = 0;
    d3.geo.stream(object, d3_geo_length);
    return d3_geo_lengthSum;
  };
  var d3_geo_lengthSum;
  var d3_geo_length = {
    sphere: d3_noop,
    point: d3_noop,
    lineStart: d3_geo_lengthLineStart,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_lengthLineStart() {
    var λ0, sinφ0, cosφ0;
    d3_geo_length.point = function(λ, φ) {
      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
      d3_geo_length.point = nextPoint;
    };
    d3_geo_length.lineEnd = function() {
      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
    };
    function nextPoint(λ, φ) {
      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
    }
  }
  function d3_geo_azimuthal(scale, angle) {
    function azimuthal(λ, φ) {
      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
    }
    azimuthal.invert = function(x, y) {
      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
    };
    return azimuthal;
  }
  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
    return Math.sqrt(2 / (1 + cosλcosφ));
  }, function(ρ) {
    return 2 * Math.asin(ρ / 2);
  });
  (d3.geo.azimuthalEqualArea = function() {
    return d3_geo_projection(d3_geo_azimuthalEqualArea);
  }).raw = d3_geo_azimuthalEqualArea;
  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
    var c = Math.acos(cosλcosφ);
    return c && c / Math.sin(c);
  }, d3_identity);
  (d3.geo.azimuthalEquidistant = function() {
    return d3_geo_projection(d3_geo_azimuthalEquidistant);
  }).raw = d3_geo_azimuthalEquidistant;
  function d3_geo_conicConformal(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), t = function(φ) {
      return Math.tan(π / 4 + φ / 2);
    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
    if (!n) return d3_geo_mercator;
    function forward(λ, φ) {
      if (F > 0) {
        if (φ < -halfπ + ε) φ = -halfπ + ε;
      } else {
        if (φ > halfπ - ε) φ = halfπ - ε;
      }
      var ρ = F / Math.pow(t(φ), n);
      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
    };
    return forward;
  }
  (d3.geo.conicConformal = function() {
    return d3_geo_conic(d3_geo_conicConformal);
  }).raw = d3_geo_conicConformal;
  function d3_geo_conicEquidistant(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
    if (abs(n) < ε) return d3_geo_equirectangular;
    function forward(λ, φ) {
      var ρ = G - φ;
      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = G - y;
      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
    };
    return forward;
  }
  (d3.geo.conicEquidistant = function() {
    return d3_geo_conic(d3_geo_conicEquidistant);
  }).raw = d3_geo_conicEquidistant;
  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / cosλcosφ;
  }, Math.atan);
  (d3.geo.gnomonic = function() {
    return d3_geo_projection(d3_geo_gnomonic);
  }).raw = d3_geo_gnomonic;
  function d3_geo_mercator(λ, φ) {
    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
  }
  d3_geo_mercator.invert = function(x, y) {
    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
  };
  function d3_geo_mercatorProjection(project) {
    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
    m.scale = function() {
      var v = scale.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.translate = function() {
      var v = translate.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.clipExtent = function(_) {
      var v = clipExtent.apply(m, arguments);
      if (v === m) {
        if (clipAuto = _ == null) {
          var k = π * scale(), t = translate();
          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
        }
      } else if (clipAuto) {
        v = null;
      }
      return v;
    };
    return m.clipExtent(null);
  }
  (d3.geo.mercator = function() {
    return d3_geo_mercatorProjection(d3_geo_mercator);
  }).raw = d3_geo_mercator;
  var d3_geo_orthographic = d3_geo_azimuthal(function() {
    return 1;
  }, Math.asin);
  (d3.geo.orthographic = function() {
    return d3_geo_projection(d3_geo_orthographic);
  }).raw = d3_geo_orthographic;
  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / (1 + cosλcosφ);
  }, function(ρ) {
    return 2 * Math.atan(ρ);
  });
  (d3.geo.stereographic = function() {
    return d3_geo_projection(d3_geo_stereographic);
  }).raw = d3_geo_stereographic;
  function d3_geo_transverseMercator(λ, φ) {
    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
  }
  d3_geo_transverseMercator.invert = function(x, y) {
    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
  };
  (d3.geo.transverseMercator = function() {
    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
    projection.center = function(_) {
      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
    };
    projection.rotate = function(_) {
      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
      [ _[0], _[1], _[2] - 90 ]);
    };
    return rotate([ 0, 0, 90 ]);
  }).raw = d3_geo_transverseMercator;
  d3.geom = {};
  function d3_geom_pointX(d) {
    return d[0];
  }
  function d3_geom_pointY(d) {
    return d[1];
  }
  d3.geom.hull = function(vertices) {
    var x = d3_geom_pointX, y = d3_geom_pointY;
    if (arguments.length) return hull(vertices);
    function hull(data) {
      if (data.length < 3) return [];
      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
      for (i = 0; i < n; i++) {
        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
      }
      points.sort(d3_geom_hullOrder);
      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
      return polygon;
    }
    hull.x = function(_) {
      return arguments.length ? (x = _, hull) : x;
    };
    hull.y = function(_) {
      return arguments.length ? (y = _, hull) : y;
    };
    return hull;
  };
  function d3_geom_hullUpper(points) {
    var n = points.length, hull = [ 0, 1 ], hs = 2;
    for (var i = 2; i < n; i++) {
      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
      hull[hs++] = i;
    }
    return hull.slice(0, hs);
  }
  function d3_geom_hullOrder(a, b) {
    return a[0] - b[0] || a[1] - b[1];
  }
  d3.geom.polygon = function(coordinates) {
    d3_subclass(coordinates, d3_geom_polygonPrototype);
    return coordinates;
  };
  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
  d3_geom_polygonPrototype.area = function() {
    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
    while (++i < n) {
      a = b;
      b = this[i];
      area += a[1] * b[0] - a[0] * b[1];
    }
    return area * .5;
  };
  d3_geom_polygonPrototype.centroid = function(k) {
    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
    if (!arguments.length) k = -1 / (6 * this.area());
    while (++i < n) {
      a = b;
      b = this[i];
      c = a[0] * b[1] - b[0] * a[1];
      x += (a[0] + b[0]) * c;
      y += (a[1] + b[1]) * c;
    }
    return [ x * k, y * k ];
  };
  d3_geom_polygonPrototype.clip = function(subject) {
    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
    while (++i < n) {
      input = subject.slice();
      subject.length = 0;
      b = this[i];
      c = input[(m = input.length - closed) - 1];
      j = -1;
      while (++j < m) {
        d = input[j];
        if (d3_geom_polygonInside(d, a, b)) {
          if (!d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          subject.push(d);
        } else if (d3_geom_polygonInside(c, a, b)) {
          subject.push(d3_geom_polygonIntersect(c, d, a, b));
        }
        c = d;
      }
      if (closed) subject.push(subject[0]);
      a = b;
    }
    return subject;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  function d3_geom_polygonClosed(coordinates) {
    var a = coordinates[0], b = coordinates[coordinates.length - 1];
    return !(a[0] - b[0] || a[1] - b[1]);
  }
  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
  function d3_geom_voronoiBeach() {
    d3_geom_voronoiRedBlackNode(this);
    this.edge = this.site = this.circle = null;
  }
  function d3_geom_voronoiCreateBeach(site) {
    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
    beach.site = site;
    return beach;
  }
  function d3_geom_voronoiDetachBeach(beach) {
    d3_geom_voronoiDetachCircle(beach);
    d3_geom_voronoiBeaches.remove(beach);
    d3_geom_voronoiBeachPool.push(beach);
    d3_geom_voronoiRedBlackNode(beach);
  }
  function d3_geom_voronoiRemoveBeach(beach) {
    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
      x: x,
      y: y
    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
    d3_geom_voronoiDetachBeach(beach);
    var lArc = previous;
    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
      previous = lArc.P;
      disappearing.unshift(lArc);
      d3_geom_voronoiDetachBeach(lArc);
      lArc = previous;
    }
    disappearing.unshift(lArc);
    d3_geom_voronoiDetachCircle(lArc);
    var rArc = next;
    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
      next = rArc.N;
      disappearing.push(rArc);
      d3_geom_voronoiDetachBeach(rArc);
      rArc = next;
    }
    disappearing.push(rArc);
    d3_geom_voronoiDetachCircle(rArc);
    var nArcs = disappearing.length, iArc;
    for (iArc = 1; iArc < nArcs; ++iArc) {
      rArc = disappearing[iArc];
      lArc = disappearing[iArc - 1];
      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
    }
    lArc = disappearing[0];
    rArc = disappearing[nArcs - 1];
    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiAddBeach(site) {
    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
    while (node) {
      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
      if (dxl > ε) node = node.L; else {
        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
        if (dxr > ε) {
          if (!node.R) {
            lArc = node;
            break;
          }
          node = node.R;
        } else {
          if (dxl > -ε) {
            lArc = node.P;
            rArc = node;
          } else if (dxr > -ε) {
            lArc = node;
            rArc = node.N;
          } else {
            lArc = rArc = node;
          }
          break;
        }
      }
    }
    var newArc = d3_geom_voronoiCreateBeach(site);
    d3_geom_voronoiBeaches.insert(lArc, newArc);
    if (!lArc && !rArc) return;
    if (lArc === rArc) {
      d3_geom_voronoiDetachCircle(lArc);
      rArc = d3_geom_voronoiCreateBeach(lArc.site);
      d3_geom_voronoiBeaches.insert(newArc, rArc);
      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      d3_geom_voronoiAttachCircle(lArc);
      d3_geom_voronoiAttachCircle(rArc);
      return;
    }
    if (!rArc) {
      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      return;
    }
    d3_geom_voronoiDetachCircle(lArc);
    d3_geom_voronoiDetachCircle(rArc);
    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
      x: (cy * hb - by * hc) / d + ax,
      y: (bx * hc - cx * hb) / d + ay
    };
    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
    if (!pby2) return rfocx;
    var lArc = arc.P;
    if (!lArc) return -Infinity;
    site = lArc.site;
    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
    if (!plby2) return lfocx;
    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
    return (rfocx + lfocx) / 2;
  }
  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
    var rArc = arc.N;
    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
    var site = arc.site;
    return site.y === directrix ? site.x : Infinity;
  }
  function d3_geom_voronoiCell(site) {
    this.site = site;
    this.edges = [];
  }
  d3_geom_voronoiCell.prototype.prepare = function() {
    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
    while (iHalfEdge--) {
      edge = halfEdges[iHalfEdge].edge;
      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
    }
    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
    return halfEdges.length;
  };
  function d3_geom_voronoiCloseCells(extent) {
    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
    while (iCell--) {
      cell = cells[iCell];
      if (!cell || !cell.prepare()) continue;
      halfEdges = cell.edges;
      nHalfEdges = halfEdges.length;
      iHalfEdge = 0;
      while (iHalfEdge < nHalfEdges) {
        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
            x: x0,
            y: abs(x2 - x0) < ε ? y2 : y1
          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
            x: abs(y2 - y1) < ε ? x2 : x1,
            y: y1
          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
            x: x1,
            y: abs(x2 - x1) < ε ? y2 : y0
          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
            x: abs(y2 - y0) < ε ? x2 : x0,
            y: y0
          } : null), cell.site, null));
          ++nHalfEdges;
        }
      }
    }
  }
  function d3_geom_voronoiHalfEdgeOrder(a, b) {
    return b.angle - a.angle;
  }
  function d3_geom_voronoiCircle() {
    d3_geom_voronoiRedBlackNode(this);
    this.x = this.y = this.arc = this.site = this.cy = null;
  }
  function d3_geom_voronoiAttachCircle(arc) {
    var lArc = arc.P, rArc = arc.N;
    if (!lArc || !rArc) return;
    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
    if (lSite === rSite) return;
    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
    var d = 2 * (ax * cy - ay * cx);
    if (d >= -ε2) return;
    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
    circle.arc = arc;
    circle.site = cSite;
    circle.x = x + bx;
    circle.y = cy + Math.sqrt(x * x + y * y);
    circle.cy = cy;
    arc.circle = circle;
    var before = null, node = d3_geom_voronoiCircles._;
    while (node) {
      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
        if (node.L) node = node.L; else {
          before = node.P;
          break;
        }
      } else {
        if (node.R) node = node.R; else {
          before = node;
          break;
        }
      }
    }
    d3_geom_voronoiCircles.insert(before, circle);
    if (!before) d3_geom_voronoiFirstCircle = circle;
  }
  function d3_geom_voronoiDetachCircle(arc) {
    var circle = arc.circle;
    if (circle) {
      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
      d3_geom_voronoiCircles.remove(circle);
      d3_geom_voronoiCirclePool.push(circle);
      d3_geom_voronoiRedBlackNode(circle);
      arc.circle = null;
    }
  }
  function d3_geom_voronoiClipEdges(extent) {
    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
    while (i--) {
      e = edges[i];
      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
        e.a = e.b = null;
        edges.splice(i, 1);
      }
    }
  }
  function d3_geom_voronoiConnectEdge(edge, extent) {
    var vb = edge.b;
    if (vb) return true;
    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
    if (ry === ly) {
      if (fx < x0 || fx >= x1) return;
      if (lx > rx) {
        if (!va) va = {
          x: fx,
          y: y0
        }; else if (va.y >= y1) return;
        vb = {
          x: fx,
          y: y1
        };
      } else {
        if (!va) va = {
          x: fx,
          y: y1
        }; else if (va.y < y0) return;
        vb = {
          x: fx,
          y: y0
        };
      }
    } else {
      fm = (lx - rx) / (ry - ly);
      fb = fy - fm * fx;
      if (fm < -1 || fm > 1) {
        if (lx > rx) {
          if (!va) va = {
            x: (y0 - fb) / fm,
            y: y0
          }; else if (va.y >= y1) return;
          vb = {
            x: (y1 - fb) / fm,
            y: y1
          };
        } else {
          if (!va) va = {
            x: (y1 - fb) / fm,
            y: y1
          }; else if (va.y < y0) return;
          vb = {
            x: (y0 - fb) / fm,
            y: y0
          };
        }
      } else {
        if (ly < ry) {
          if (!va) va = {
            x: x0,
            y: fm * x0 + fb
          }; else if (va.x >= x1) return;
          vb = {
            x: x1,
            y: fm * x1 + fb
          };
        } else {
          if (!va) va = {
            x: x1,
            y: fm * x1 + fb
          }; else if (va.x < x0) return;
          vb = {
            x: x0,
            y: fm * x0 + fb
          };
        }
      }
    }
    edge.a = va;
    edge.b = vb;
    return true;
  }
  function d3_geom_voronoiEdge(lSite, rSite) {
    this.l = lSite;
    this.r = rSite;
    this.a = this.b = null;
  }
  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, rSite);
    d3_geom_voronoiEdges.push(edge);
    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
    return edge;
  }
  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, null);
    edge.a = va;
    edge.b = vb;
    d3_geom_voronoiEdges.push(edge);
    return edge;
  }
  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
    if (!edge.a && !edge.b) {
      edge.a = vertex;
      edge.l = lSite;
      edge.r = rSite;
    } else if (edge.l === rSite) {
      edge.b = vertex;
    } else {
      edge.a = vertex;
    }
  }
  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
    var va = edge.a, vb = edge.b;
    this.edge = edge;
    this.site = lSite;
    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
  }
  d3_geom_voronoiHalfEdge.prototype = {
    start: function() {
      return this.edge.l === this.site ? this.edge.a : this.edge.b;
    },
    end: function() {
      return this.edge.l === this.site ? this.edge.b : this.edge.a;
    }
  };
  function d3_geom_voronoiRedBlackTree() {
    this._ = null;
  }
  function d3_geom_voronoiRedBlackNode(node) {
    node.U = node.C = node.L = node.R = node.P = node.N = null;
  }
  d3_geom_voronoiRedBlackTree.prototype = {
    insert: function(after, node) {
      var parent, grandpa, uncle;
      if (after) {
        node.P = after;
        node.N = after.N;
        if (after.N) after.N.P = node;
        after.N = node;
        if (after.R) {
          after = after.R;
          while (after.L) after = after.L;
          after.L = node;
        } else {
          after.R = node;
        }
        parent = after;
      } else if (this._) {
        after = d3_geom_voronoiRedBlackFirst(this._);
        node.P = null;
        node.N = after;
        after.P = after.L = node;
        parent = after;
      } else {
        node.P = node.N = null;
        this._ = node;
        parent = null;
      }
      node.L = node.R = null;
      node.U = parent;
      node.C = true;
      after = node;
      while (parent && parent.C) {
        grandpa = parent.U;
        if (parent === grandpa.L) {
          uncle = grandpa.R;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.R) {
              d3_geom_voronoiRedBlackRotateLeft(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
          }
        } else {
          uncle = grandpa.L;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.L) {
              d3_geom_voronoiRedBlackRotateRight(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
          }
        }
        parent = after.U;
      }
      this._.C = false;
    },
    remove: function(node) {
      if (node.N) node.N.P = node.P;
      if (node.P) node.P.N = node.N;
      node.N = node.P = null;
      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
      if (parent) {
        if (parent.L === node) parent.L = next; else parent.R = next;
      } else {
        this._ = next;
      }
      if (left && right) {
        red = next.C;
        next.C = node.C;
        next.L = left;
        left.U = next;
        if (next !== right) {
          parent = next.U;
          next.U = node.U;
          node = next.R;
          parent.L = node;
          next.R = right;
          right.U = next;
        } else {
          next.U = parent;
          parent = next;
          node = next.R;
        }
      } else {
        red = node.C;
        node = next;
      }
      if (node) node.U = parent;
      if (red) return;
      if (node && node.C) {
        node.C = false;
        return;
      }
      do {
        if (node === this._) break;
        if (node === parent.L) {
          sibling = parent.R;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            sibling = parent.R;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.R || !sibling.R.C) {
              sibling.L.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateRight(this, sibling);
              sibling = parent.R;
            }
            sibling.C = parent.C;
            parent.C = sibling.R.C = false;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            node = this._;
            break;
          }
        } else {
          sibling = parent.L;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            sibling = parent.L;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.L || !sibling.L.C) {
              sibling.R.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
              sibling = parent.L;
            }
            sibling.C = parent.C;
            parent.C = sibling.L.C = false;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            node = this._;
            break;
          }
        }
        sibling.C = true;
        node = parent;
        parent = parent.U;
      } while (!node.C);
      if (node) node.C = false;
    }
  };
  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
    var p = node, q = node.R, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.R = q.L;
    if (p.R) p.R.U = p;
    q.L = p;
  }
  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
    var p = node, q = node.L, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.L = q.R;
    if (p.L) p.L.U = p;
    q.R = p;
  }
  function d3_geom_voronoiRedBlackFirst(node) {
    while (node.L) node = node.L;
    return node;
  }
  function d3_geom_voronoi(sites, bbox) {
    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
    d3_geom_voronoiEdges = [];
    d3_geom_voronoiCells = new Array(sites.length);
    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
    while (true) {
      circle = d3_geom_voronoiFirstCircle;
      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
        if (site.x !== x0 || site.y !== y0) {
          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
          d3_geom_voronoiAddBeach(site);
          x0 = site.x, y0 = site.y;
        }
        site = sites.pop();
      } else if (circle) {
        d3_geom_voronoiRemoveBeach(circle.arc);
      } else {
        break;
      }
    }
    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
    var diagram = {
      cells: d3_geom_voronoiCells,
      edges: d3_geom_voronoiEdges
    };
    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
    return diagram;
  }
  function d3_geom_voronoiVertexOrder(a, b) {
    return b.y - a.y || b.x - a.x;
  }
  d3.geom.voronoi = function(points) {
    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
    if (points) return voronoi(points);
    function voronoi(data) {
      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
          var s = e.start();
          return [ s.x, s.y ];
        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
        polygon.point = data[i];
      });
      return polygons;
    }
    function sites(data) {
      return data.map(function(d, i) {
        return {
          x: Math.round(fx(d, i) / ε) * ε,
          y: Math.round(fy(d, i) / ε) * ε,
          i: i
        };
      });
    }
    voronoi.links = function(data) {
      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
        return edge.l && edge.r;
      }).map(function(edge) {
        return {
          source: data[edge.l.i],
          target: data[edge.r.i]
        };
      });
    };
    voronoi.triangles = function(data) {
      var triangles = [];
      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
        while (++j < m) {
          e0 = e1;
          s0 = s1;
          e1 = edges[j].edge;
          s1 = e1.l === site ? e1.r : e1.l;
          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
          }
        }
      });
      return triangles;
    };
    voronoi.x = function(_) {
      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
    };
    voronoi.y = function(_) {
      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
    };
    voronoi.clipExtent = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
      return voronoi;
    };
    voronoi.size = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
    };
    return voronoi;
  };
  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
  function d3_geom_voronoiTriangleArea(a, b, c) {
    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
  }
  d3.geom.delaunay = function(vertices) {
    return d3.geom.voronoi().triangles(vertices);
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
    if (compat = arguments.length) {
      x = d3_geom_quadtreeCompatX;
      y = d3_geom_quadtreeCompatY;
      if (compat === 3) {
        y2 = y1;
        x2 = x1;
        y1 = x1 = 0;
      }
      return quadtree(points);
    }
    function quadtree(data) {
      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
      if (x1 != null) {
        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
      } else {
        x2_ = y2_ = -(x1_ = y1_ = Infinity);
        xs = [], ys = [];
        n = data.length;
        if (compat) for (i = 0; i < n; ++i) {
          d = data[i];
          if (d.x < x1_) x1_ = d.x;
          if (d.y < y1_) y1_ = d.y;
          if (d.x > x2_) x2_ = d.x;
          if (d.y > y2_) y2_ = d.y;
          xs.push(d.x);
          ys.push(d.y);
        } else for (i = 0; i < n; ++i) {
          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
          if (x_ < x1_) x1_ = x_;
          if (y_ < y1_) y1_ = y_;
          if (x_ > x2_) x2_ = x_;
          if (y_ > y2_) y2_ = y_;
          xs.push(x_);
          ys.push(y_);
        }
      }
      var dx = x2_ - x1_, dy = y2_ - y1_;
      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
      function insert(n, d, x, y, x1, y1, x2, y2) {
        if (isNaN(x) || isNaN(y)) return;
        if (n.leaf) {
          var nx = n.x, ny = n.y;
          if (nx != null) {
            if (abs(nx - x) + abs(ny - y) < .01) {
              insertChild(n, d, x, y, x1, y1, x2, y2);
            } else {
              var nPoint = n.point;
              n.x = n.y = n.point = null;
              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
              insertChild(n, d, x, y, x1, y1, x2, y2);
            }
          } else {
            n.x = x, n.y = y, n.point = d;
          }
        } else {
          insertChild(n, d, x, y, x1, y1, x2, y2);
        }
      }
      function insertChild(n, d, x, y, x1, y1, x2, y2) {
        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
        n.leaf = false;
        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
        if (right) x1 = xm; else x2 = xm;
        if (below) y1 = ym; else y2 = ym;
        insert(n, d, x, y, x1, y1, x2, y2);
      }
      var root = d3_geom_quadtreeNode();
      root.add = function(d) {
        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
      };
      root.visit = function(f) {
        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
      };
      root.find = function(point) {
        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
      };
      i = -1;
      if (x1 == null) {
        while (++i < n) {
          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
        }
        --i;
      } else data.forEach(root.add);
      xs = ys = data = d = null;
      return root;
    }
    quadtree.x = function(_) {
      return arguments.length ? (x = _, quadtree) : x;
    };
    quadtree.y = function(_) {
      return arguments.length ? (y = _, quadtree) : y;
    };
    quadtree.extent = function(_) {
      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
      y2 = +_[1][1];
      return quadtree;
    };
    quadtree.size = function(_) {
      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
      return quadtree;
    };
    return quadtree;
  };
  function d3_geom_quadtreeCompatX(d) {
    return d.x;
  }
  function d3_geom_quadtreeCompatY(d) {
    return d.y;
  }
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null,
      x: null,
      y: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
    var minDistance2 = Infinity, closestPoint;
    (function find(node, x1, y1, x2, y2) {
      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
      if (point = node.point) {
        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
        if (distance2 < minDistance2) {
          var distance = Math.sqrt(minDistance2 = distance2);
          x0 = x - distance, y0 = y - distance;
          x3 = x + distance, y3 = y + distance;
          closestPoint = point;
        }
      }
      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
        if (node = children[i & 3]) switch (i & 3) {
         case 0:
          find(node, x1, y1, xm, ym);
          break;

         case 1:
          find(node, xm, y1, x2, ym);
          break;

         case 2:
          find(node, x1, ym, xm, y2);
          break;

         case 3:
          find(node, xm, ym, x2, y2);
          break;
        }
      }
    })(root, x0, y0, x3, y3);
    return closestPoint;
  }
  d3.interpolateRgb = d3_interpolateRgb;
  function d3_interpolateRgb(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  }
  d3.interpolateObject = d3_interpolateObject;
  function d3_interpolateObject(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolate(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  }
  d3.interpolateNumber = d3_interpolateNumber;
  function d3_interpolateNumber(a, b) {
    a = +a, b = +b;
    return function(t) {
      return a * (1 - t) + b * t;
    };
  }
  d3.interpolateString = d3_interpolateString;
  function d3_interpolateString(a, b) {
    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
    a = a + "", b = b + "";
    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
      if ((bs = bm.index) > bi) {
        bs = b.slice(bi, bs);
        if (s[i]) s[i] += bs; else s[++i] = bs;
      }
      if ((am = am[0]) === (bm = bm[0])) {
        if (s[i]) s[i] += bm; else s[++i] = bm;
      } else {
        s[++i] = null;
        q.push({
          i: i,
          x: d3_interpolateNumber(am, bm)
        });
      }
      bi = d3_interpolate_numberB.lastIndex;
    }
    if (bi < b.length) {
      bs = b.slice(bi);
      if (s[i]) s[i] += bs; else s[++i] = bs;
    }
    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
      return b(t) + "";
    }) : function() {
      return b;
    } : (b = q.length, function(t) {
      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    });
  }
  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
  d3.interpolate = d3_interpolate;
  function d3_interpolate(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  }
  d3.interpolators = [ function(a, b) {
    var t = typeof b;
    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
  } ];
  d3.interpolateArray = d3_interpolateArray;
  function d3_interpolateArray(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
    for (;i < na; ++i) c[i] = a[i];
    for (;i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  }
  var d3_ease_default = function() {
    return d3_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_identity;
    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_quad(t) {
    return t * t;
  }
  function d3_ease_cubic(t) {
    return t * t * t;
  }
  function d3_ease_cubicInOut(t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t, t3 = t2 * t;
    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * halfπ);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
    return function(t) {
      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.interpolateHcl = d3_interpolateHcl;
  function d3_interpolateHcl(a, b) {
    a = d3.hcl(a);
    b = d3.hcl(b);
    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
    };
  }
  d3.interpolateHsl = d3_interpolateHsl;
  function d3_interpolateHsl(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
    };
  }
  d3.interpolateLab = d3_interpolateLab;
  function d3_interpolateLab(a, b) {
    a = d3.lab(a);
    b = d3.lab(b);
    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
    return function(t) {
      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
    };
  }
  d3.interpolateRound = d3_interpolateRound;
  function d3_interpolateRound(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  }
  d3.transform = function(string) {
    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      if (string != null) {
        g.setAttribute("transform", string);
        var t = g.transform.baseVal.consolidate();
      }
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolateTransform = d3_interpolateTransform;
  function d3_interpolateTransformPop(s) {
    return s.length ? s.pop() + "," : "";
  }
  function d3_interpolateTranslate(ta, tb, s, q) {
    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
      var i = s.push("translate(", null, ",", null, ")");
      q.push({
        i: i - 4,
        x: d3_interpolateNumber(ta[0], tb[0])
      }, {
        i: i - 2,
        x: d3_interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    }
  }
  function d3_interpolateRotate(ra, rb, s, q) {
    if (ra !== rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
        x: d3_interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
    }
  }
  function d3_interpolateSkew(wa, wb, s, q) {
    if (wa !== wb) {
      q.push({
        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
        x: d3_interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
    }
  }
  function d3_interpolateScale(ka, kb, s, q) {
    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
      q.push({
        i: i - 4,
        x: d3_interpolateNumber(ka[0], kb[0])
      }, {
        i: i - 2,
        x: d3_interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] !== 1 || kb[1] !== 1) {
      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
    }
  }
  function d3_interpolateTransform(a, b) {
    var s = [], q = [];
    a = d3.transform(a), b = d3.transform(b);
    d3_interpolateTranslate(a.translate, b.translate, s, q);
    d3_interpolateRotate(a.rotate, b.rotate, s, q);
    d3_interpolateSkew(a.skew, b.skew, s, q);
    d3_interpolateScale(a.scale, b.scale, s, q);
    a = b = null;
    return function(t) {
      var i = -1, n = q.length, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  }
  function d3_uninterpolateNumber(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return (x - a) / b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) / b));
    };
  }
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (τ - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: groupSums[di]
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, _, x2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
          if (dw * dw / theta2 < dn) {
            if (dn < chargeDistance2) {
              var k = quad.charge / dn;
              node.px -= dx * k;
              node.py -= dy * k;
            }
            return true;
          }
          if (quad.point && dn && dn < chargeDistance2) {
            var k = quad.pointCharge / dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        timer = null;
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = typeof x === "function" ? x : +x;
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = typeof x === "function" ? x : +x;
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = +x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.chargeDistance = function(x) {
      if (!arguments.length) return Math.sqrt(chargeDistance2);
      chargeDistance2 = x * x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = +x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return Math.sqrt(theta2);
      theta2 = x * x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      x = +x;
      if (alpha) {
        if (x > 0) {
          alpha = x;
        } else {
          timer.c = null, timer.t = NaN, timer = null;
          event.end({
            type: "end",
            alpha: alpha = 0
          });
        }
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        timer = d3_timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      distances = [];
      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
      strengths = [];
      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        if (!neighbors) {
          neighbors = new Array(n);
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        var candidates = neighbors[i], j = -1, l = candidates.length, x;
        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
        return Math.random() * size;
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
      if (!arguments.length) return drag;
      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
    };
    function dragmove(d) {
      d.px = d3.event.x, d.py = d3.event.y;
      force.resume();
    }
    return d3.rebind(force, event, "on");
  };
  function d3_layout_forceDragstart(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragend(d) {
    d.fixed &= ~6;
  }
  function d3_layout_forceMouseover(d) {
    d.fixed |= 4;
    d.px = d.x, d.py = d.y;
  }
  function d3_layout_forceMouseout(d) {
    d.fixed &= ~4;
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function hierarchy(root) {
      var stack = [ root ], nodes = [], node;
      root.depth = 0;
      while ((node = stack.pop()) != null) {
        nodes.push(node);
        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
          var n, childs, child;
          while (--n >= 0) {
            stack.push(child = childs[n]);
            child.parent = node;
            child.depth = node.depth + 1;
          }
          if (value) node.value = 0;
          node.children = childs;
        } else {
          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
          delete node.children;
        }
      }
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var childs, parent;
        if (sort && (childs = node.children)) childs.sort(sort);
        if (value && (parent = node.parent)) parent.value += node.value;
      });
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      if (value) {
        d3_layout_hierarchyVisitBefore(root, function(node) {
          if (node.children) node.value = 0;
        });
        d3_layout_hierarchyVisitAfter(root, function(node) {
          var parent;
          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
          if (parent = node.parent) parent.value += node.value;
        });
      }
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.nodes = object;
    object.links = d3_layout_hierarchyLinks;
    return object;
  }
  function d3_layout_hierarchyVisitBefore(node, callback) {
    var nodes = [ node ];
    while ((node = nodes.pop()) != null) {
      callback(node);
      if ((children = node.children) && (n = children.length)) {
        var n, children;
        while (--n >= 0) nodes.push(children[n]);
      }
    }
  }
  function d3_layout_hierarchyVisitAfter(node, callback) {
    var nodes = [ node ], nodes2 = [];
    while ((node = nodes.pop()) != null) {
      nodes2.push(node);
      if ((children = node.children) && (n = children.length)) {
        var i = -1, n, children;
        while (++i < n) nodes.push(children[i]);
      }
    }
    while ((node = nodes2.pop()) != null) {
      callback(node);
    }
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
    function pie(data) {
      var n = data.length, values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      index.forEach(function(i) {
        arcs[i] = {
          data: data[i],
          value: v = values[i],
          startAngle: a,
          endAngle: a += v * k + pa,
          padAngle: p
        };
      });
      return arcs;
    }
    pie.value = function(_) {
      if (!arguments.length) return value;
      value = _;
      return pie;
    };
    pie.sort = function(_) {
      if (!arguments.length) return sort;
      sort = _;
      return pie;
    };
    pie.startAngle = function(_) {
      if (!arguments.length) return startAngle;
      startAngle = _;
      return pie;
    };
    pie.endAngle = function(_) {
      if (!arguments.length) return endAngle;
      endAngle = _;
      return pie;
    };
    pie.padAngle = function(_) {
      if (!arguments.length) return padAngle;
      padAngle = _;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      if (!(n = data.length)) return data;
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var m = series[0].length, n, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (;i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
        return radius;
      };
      root.x = root.y = 0;
      d3_layout_hierarchyVisitAfter(root, function(d) {
        d.r = +r(d.value);
      });
      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
      if (padding) {
        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r += dr;
        });
        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r -= dr;
        });
      }
      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
      return nodes;
    }
    pack.size = function(_) {
      if (!arguments.length) return size;
      size = _;
      return pack;
    };
    pack.radius = function(_) {
      if (!arguments.length) return radius;
      radius = _ == null || typeof _ === "function" ? _ : +_;
      return pack;
    };
    pack.padding = function(_) {
      if (!arguments.length) return padding;
      padding = +_;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return .999 * dr * dr > dx * dx + dy * dy;
  }
  function d3_layout_packSiblings(node) {
    if (!(nodes = node.children) || !(n = nodes.length)) return;
    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (i = 0; i < n; i++) {
      c = nodes[i];
      c.x -= cx;
      c.y -= cy;
      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
    }
    node.r = cr;
    nodes.forEach(d3_layout_packUnlink);
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
      d3_layout_hierarchyVisitBefore(root1, secondWalk);
      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
        var left = root0, right = root0, bottom = root0;
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          if (node.x < left.x) left = node;
          if (node.x > right.x) right = node;
          if (node.depth > bottom.depth) bottom = node;
        });
        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          node.x = (node.x + tx) * kx;
          node.y = node.depth * ky;
        });
      }
      return nodes;
    }
    function wrapTree(root0) {
      var root1 = {
        A: null,
        children: [ root0 ]
      }, queue = [ root1 ], node1;
      while ((node1 = queue.pop()) != null) {
        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
          queue.push((children[i] = child = {
            _: children[i],
            parent: node1,
            children: (child = children[i].children) && child.slice() || [],
            A: null,
            a: null,
            z: 0,
            m: 0,
            c: 0,
            s: 0,
            t: null,
            i: i
          }).a = child);
        }
      }
      return root1.children[0];
    }
    function firstWalk(v) {
      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
      if (children.length) {
        d3_layout_treeShift(v);
        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
        if (w) {
          v.z = w.z + separation(v._, w._);
          v.m = v.z - midpoint;
        } else {
          v.z = midpoint;
        }
      } else if (w) {
        v.z = w.z + separation(v._, w._);
      }
      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
    }
    function secondWalk(v) {
      v._.x = v.z + v.parent.m;
      v.m += v.parent.m;
    }
    function apportion(v, w, ancestor) {
      if (w) {
        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
          vom = d3_layout_treeLeft(vom);
          vop = d3_layout_treeRight(vop);
          vop.a = v;
          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
          if (shift > 0) {
            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
            sip += shift;
            sop += shift;
          }
          sim += vim.m;
          sip += vip.m;
          som += vom.m;
          sop += vop.m;
        }
        if (vim && !d3_layout_treeRight(vop)) {
          vop.t = vim;
          vop.m += sim - sop;
        }
        if (vip && !d3_layout_treeLeft(vom)) {
          vom.t = vip;
          vom.m += sip - som;
          ancestor = v;
        }
      }
      return ancestor;
    }
    function sizeNode(node) {
      node.x *= size[0];
      node.y = node.depth * size[1];
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null ? sizeNode : null;
      return tree;
    };
    tree.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) == null ? null : sizeNode;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(v) {
    var children = v.children;
    return children.length ? children[0] : v.t;
  }
  function d3_layout_treeRight(v) {
    var children = v.children, n;
    return (n = children.length) ? children[n - 1] : v.t;
  }
  function d3_layout_treeMove(wm, wp, shift) {
    var change = shift / (wp.i - wm.i);
    wp.c -= change;
    wp.s += shift;
    wm.c += change;
    wp.z += shift;
    wp.m += shift;
  }
  function d3_layout_treeShift(v) {
    var shift = 0, change = 0, children = v.children, i = children.length, w;
    while (--i >= 0) {
      w = children[i];
      w.z += shift;
      w.m += shift;
      shift += w.s + (change += w.c);
    }
  }
  function d3_layout_treeAncestor(vim, v, ancestor) {
    return vim.a.parent === v.parent ? vim.a : ancestor;
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
        node.x = (node.x - root.x) * size[0];
        node.y = (root.y - node.y) * size[1];
      } : function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null;
      return cluster;
    };
    cluster.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) != null;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = root.y = 0;
      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
      padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    treemap.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  d3.random = {
    normal: function(µ, σ) {
      var n = arguments.length;
      if (n < 2) σ = 1;
      if (n < 1) µ = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    },
    logNormal: function() {
      var random = d3.random.normal.apply(d3, arguments);
      return function() {
        return Math.exp(random());
      };
    },
    bates: function(m) {
      var random = d3.random.irwinHall(m);
      return function() {
        return random() / m;
      };
    },
    irwinHall: function(m) {
      return function() {
        for (var s = 0, j = 0; j < m; j++) s += Math.random();
        return s;
      };
    }
  };
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0, i0 = i1, i1 = dx;
      dx = x0, x0 = x1, x1 = dx;
    }
    domain[i0] = nice.floor(x0);
    domain[i1] = nice.ceil(x1);
    return domain;
  }
  function d3_scale_niceStep(step) {
    return step ? {
      floor: function(x) {
        return Math.floor(x / step) * step;
      },
      ceil: function(x) {
        return Math.ceil(x / step) * step;
      }
    } : d3_scale_niceIdentity;
  }
  var d3_scale_niceIdentity = {
    floor: d3_identity,
    ceil: d3_identity
  };
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3_interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3_interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      d3_scale_linearNice(domain, m);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(domain, m) {
    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
    return domain;
  }
  function d3_scale_linearTickRange(domain, m) {
    if (m == null) m = 10;
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m, format) {
    var range = d3_scale_linearTickRange(domain, m);
    if (format) {
      var match = d3_format_re.exec(format);
      match.shift();
      if (match[8] === "s") {
        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
        match[8] = "f";
        format = d3.format(match.join(""));
        return function(d) {
          return format(prefix.scale(d)) + prefix.symbol;
        };
      }
      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
      format = match.join("");
    } else {
      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
    }
    return d3.format(format);
  }
  var d3_scale_linearFormatSignificant = {
    s: 1,
    g: 1,
    p: 1,
    r: 1,
    e: 1
  };
  function d3_scale_linearPrecision(value) {
    return -Math.floor(Math.log(value) / Math.LN10 + .01);
  }
  function d3_scale_linearFormatPrecision(type, range) {
    var p = d3_scale_linearPrecision(range[2]);
    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
  };
  function d3_scale_log(linear, base, positive, domain) {
    function log(x) {
      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
    }
    function pow(x) {
      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
    }
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      positive = x[0] >= 0;
      linear.domain((domain = x.map(Number)).map(log));
      return scale;
    };
    scale.base = function(_) {
      if (!arguments.length) return base;
      base = +_;
      linear.domain(domain.map(log));
      return scale;
    };
    scale.nice = function() {
      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
      linear.domain(niced);
      domain = niced.map(pow);
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
      if (isFinite(j - i)) {
        if (positive) {
          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        } else {
          ticks.push(pow(i));
          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (!arguments.length) return d3_scale_logFormat;
      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
      var k = Math.max(1, base * n / scale.ticks().length);
      return function(d) {
        var i = d / pow(Math.round(log(d)));
        if (i * base < base - .5) i *= base;
        return i <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), base, positive, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
    floor: function(x) {
      return -Math.ceil(-x);
    },
    ceil: function(x) {
      return -Math.floor(-x);
    }
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
  };
  function d3_scale_pow(linear, exponent, domain) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      linear.domain((domain = x.map(Number)).map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      return scale.domain(d3_scale_linearNice(domain, m));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      linear.domain(domain.map(powp));
      return scale;
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      a: [ [] ]
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map();
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t].apply(scale, ranger.a);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        a: arguments
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
      0) : (stop - start) / (domain.length - 1 + padding);
      range = steps(start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundPoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
      0) : (stop - start) / (domain.length - 1 + padding) | 0;
      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
      rangeBand = 0;
      ranger = {
        t: "rangeRoundPoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
      range = steps(start + step * outerPadding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.a[0]);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      y = y < 0 ? NaN : y / kx + x0;
      return [ y, y + 1 / kx ];
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.threshold = function() {
    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
  };
  function d3_scale_threshold(domain, range) {
    function scale(x) {
      if (x <= x) return range[d3.bisect(domain, x)];
    }
    scale.domain = function(_) {
      if (!arguments.length) return domain;
      domain = _;
      return scale;
    };
    scale.range = function(_) {
      if (!arguments.length) return range;
      range = _;
      return scale;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return [ domain[y - 1], domain[y] ];
    };
    scale.copy = function() {
      return d3_scale_threshold(domain, range);
    };
    return scale;
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  function d3_zero() {
    return 0;
  }
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
    function arc() {
      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
        if (!cw) p1 *= -1;
        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
      }
      if (r1) {
        x0 = r1 * Math.cos(a0 + p1);
        y0 = r1 * Math.sin(a0 + p1);
        x1 = r1 * Math.cos(a1 - p1);
        y1 = r1 * Math.sin(a1 - p1);
        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
          var h1 = (a0 + a1) / 2;
          x0 = r1 * Math.cos(h1);
          y0 = r1 * Math.sin(h1);
          x1 = y1 = null;
        }
      } else {
        x0 = y0 = 0;
      }
      if (r0) {
        x2 = r0 * Math.cos(a1 - p0);
        y2 = r0 * Math.sin(a1 - p0);
        x3 = r0 * Math.cos(a0 + p0);
        y3 = r0 * Math.sin(a0 + p0);
        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
          var h0 = (a0 + a1) / 2;
          x2 = r0 * Math.cos(h0);
          y2 = r0 * Math.sin(h0);
          x3 = y3 = null;
        }
      } else {
        x2 = y2 = 0;
      }
      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
        cr = r0 < r1 ^ cw ? 0 : 1;
        var rc1 = rc, rc0 = rc;
        if (da < π) {
          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
        }
        if (x1 != null) {
          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
          if (rc === rc1) {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
          } else {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
          }
        } else {
          path.push("M", x0, ",", y0);
        }
        if (x3 != null) {
          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
          if (rc === rc0) {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          } else {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          }
        } else {
          path.push("L", x2, ",", y2);
        }
      } else {
        path.push("M", x0, ",", y0);
        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
        path.push("L", x2, ",", y2);
        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
      }
      path.push("Z");
      return path.join("");
    }
    function circleSegment(r1, cw) {
      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.cornerRadius = function(v) {
      if (!arguments.length) return cornerRadius;
      cornerRadius = d3_functor(v);
      return arc;
    };
    arc.padRadius = function(v) {
      if (!arguments.length) return padRadius;
      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.padAngle = function(v) {
      if (!arguments.length) return padAngle;
      padAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcAuto = "auto";
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_arcPadAngle(d) {
    return d && d.padAngle;
  }
  function d3_svg_arcSweep(x0, y0, x1, y1) {
    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
  }
  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
  }
  function d3_svg_line(projection) {
    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolate(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    step: d3_svg_lineStep,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  d3_svg_lineInterpolators.forEach(function(key, value) {
    value.key = key;
    value.closed = /-closed$/.test(key);
  });
  function d3_svg_lineLinear(points) {
    return points.length > 1 ? points.join("L") : points + "Z";
  }
  function d3_svg_lineLinearClosed(points) {
    return points.join("L") + "Z";
  }
  function d3_svg_lineStep(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
    if (n > 1) path.push("H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    points.push(points[n - 1]);
    while (++i <= n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    points.pop();
    path.push("L", pi);
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (abs(d) < ε) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] - halfπ;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      interpolateReverse = interpolate.reverse || interpolate;
      L = interpolate.closed ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(d3_identity);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  d3.svg.diagonal = function() {
    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / π);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
  d3_selectionPrototype.transition = function(name) {
    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
      time: Date.now(),
      ease: d3_ease_cubicInOut,
      delay: 0,
      duration: 250
    };
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_selectionPrototype.interrupt = function(name) {
    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
  };
  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
  function d3_selection_interruptNS(ns) {
    return function() {
      var lock, activeId, active;
      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
        active.timer.c = null;
        active.timer.t = NaN;
        if (--lock.count) delete lock[activeId]; else delete this[ns];
        lock.active += .5;
        active.event && active.event.interrupt.call(this, this.__data__, active.index);
      }
    };
  }
  function d3_transition(groups, ns, id) {
    d3_subclass(groups, d3_transitionPrototype);
    groups.namespace = ns;
    groups.id = id;
    return groups;
  }
  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
  d3_transitionPrototype.node = d3_selectionPrototype.node;
  d3_transitionPrototype.size = d3_selectionPrototype.size;
  d3.transition = function(selection, name) {
    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
  };
  d3.transition.prototype = d3_transitionPrototype;
  d3_transitionPrototype.select = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
          subgroup.push(subnode);
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          transition = node[ns][id];
          subnodes = selector.call(node, node.__data__, i, j);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
            subgroup.push(subnode);
          }
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.namespace, this.id);
  };
  d3_transitionPrototype.tween = function(name, tween) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
    return d3_selection_each(this, tween == null ? function(node) {
      node[ns][id].tween.remove(name);
    } : function(node) {
      node[ns][id].tween.set(name, tween);
    });
  };
  function d3_transition_tween(groups, name, value, tween) {
    var id = groups.id, ns = groups.namespace;
    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
    } : (value = tween(value), function(node) {
      node[ns][id].tween.set(name, value);
    }));
  }
  d3_transitionPrototype.attr = function(nameNS, value) {
    if (arguments.length < 2) {
      for (value in nameNS) this.attr(value, nameNS[value]);
      return this;
    }
    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrTween(b) {
      return b == null ? attrNull : (b += "", function() {
        var a = this.getAttribute(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttribute(name, i(t));
        });
      });
    }
    function attrTweenNS(b) {
      return b == null ? attrNullNS : (b += "", function() {
        var a = this.getAttributeNS(name.space, name.local), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttributeNS(name.space, name.local, i(t));
        });
      });
    }
    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.style(priority, name[priority], value);
        return this;
      }
      priority = "";
    }
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleString(b) {
      return b == null ? styleNull : (b += "", function() {
        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
        return a !== b && (i = d3_interpolate(a, b), function(t) {
          this.style.setProperty(name, i(t), priority);
        });
      });
    }
    return d3_transition_tween(this, "style." + name, value, styleString);
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    function styleTween(d, i) {
      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
      return f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    }
    return this.tween("style." + name, styleTween);
  };
  d3_transitionPrototype.text = function(value) {
    return d3_transition_tween(this, "text", value, d3_transition_text);
  };
  function d3_transition_text(b) {
    if (b == null) b = "";
    return function() {
      this.textContent = b;
    };
  }
  d3_transitionPrototype.remove = function() {
    var ns = this.namespace;
    return this.each("end.transition", function() {
      var p;
      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.ease = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].ease;
    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
    return d3_selection_each(this, function(node) {
      node[ns][id].ease = value;
    });
  };
  d3_transitionPrototype.delay = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].delay;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].delay = +value.call(node, node.__data__, i, j);
    } : (value = +value, function(node) {
      node[ns][id].delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].duration;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
    } : (value = Math.max(1, value), function(node) {
      node[ns][id].duration = value;
    }));
  };
  d3_transitionPrototype.each = function(type, listener) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) {
      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
      try {
        d3_transitionInheritId = id;
        d3_selection_each(this, function(node, i, j) {
          d3_transitionInherit = node[ns][id];
          type.call(node, node.__data__, i, j);
        });
      } finally {
        d3_transitionInherit = inherit;
        d3_transitionInheritId = inheritId;
      }
    } else {
      d3_selection_each(this, function(node) {
        var transition = node[ns][id];
        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
      });
    }
    return this;
  };
  d3_transitionPrototype.transition = function() {
    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if (node = group[i]) {
          transition = node[ns][id0];
          d3_transitionNode(node, i, ns, id1, {
            time: transition.time,
            ease: transition.ease,
            delay: transition.delay + transition.duration,
            duration: transition.duration
          });
        }
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id1);
  };
  function d3_transitionNamespace(name) {
    return name == null ? "__transition__" : "__transition_" + name + "__";
  }
  function d3_transitionNode(node, i, ns, id, inherit) {
    var lock = node[ns] || (node[ns] = {
      active: 0,
      count: 0
    }), transition = lock[id], time, timer, duration, ease, tweens;
    function schedule(elapsed) {
      var delay = transition.delay;
      timer.t = delay + time;
      if (delay <= elapsed) return start(elapsed - delay);
      timer.c = start;
    }
    function start(elapsed) {
      var activeId = lock.active, active = lock[activeId];
      if (active) {
        active.timer.c = null;
        active.timer.t = NaN;
        --lock.count;
        delete lock[activeId];
        active.event && active.event.interrupt.call(node, node.__data__, active.index);
      }
      for (var cancelId in lock) {
        if (+cancelId < id) {
          var cancel = lock[cancelId];
          cancel.timer.c = null;
          cancel.timer.t = NaN;
          --lock.count;
          delete lock[cancelId];
        }
      }
      timer.c = tick;
      d3_timer(function() {
        if (timer.c && tick(elapsed || 1)) {
          timer.c = null;
          timer.t = NaN;
        }
        return 1;
      }, 0, time);
      lock.active = id;
      transition.event && transition.event.start.call(node, node.__data__, i);
      tweens = [];
      transition.tween.forEach(function(key, value) {
        if (value = value.call(node, node.__data__, i)) {
          tweens.push(value);
        }
      });
      ease = transition.ease;
      duration = transition.duration;
    }
    function tick(elapsed) {
      var t = elapsed / duration, e = ease(t), n = tweens.length;
      while (n > 0) {
        tweens[--n].call(node, e);
      }
      if (t >= 1) {
        transition.event && transition.event.end.call(node, node.__data__, i);
        if (--lock.count) delete lock[id]; else delete node[ns];
        return 1;
      }
    }
    if (!transition) {
      time = inherit.time;
      timer = d3_timer(schedule, 0, time);
      transition = lock[id] = {
        tween: new d3_Map(),
        time: time,
        timer: timer,
        delay: inherit.delay,
        duration: inherit.duration,
        ease: inherit.ease,
        index: i
      };
      inherit = null;
      ++lock.count;
    }
  }
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
        d3.transition(path));
        tickEnter.append("line");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
        if (orient === "bottom" || orient === "top") {
          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
        } else {
          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
        }
        lineEnter.attr(y2, sign * innerTickSize);
        textEnter.attr(y1, sign * tickSpacing);
        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
        if (scale1.rangeBand) {
          var x = scale1, dx = x.rangeBand() / 2;
          scale0 = scale1 = function(d) {
            return x(d) + dx;
          };
        } else if (scale0.rangeBand) {
          scale0 = scale1;
        } else {
          tickExit.call(tickTransform, scale1, scale0);
        }
        tickEnter.call(tickTransform, scale0, scale1);
        tickUpdate.call(tickTransform, scale1, scale1);
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = d3_array(arguments);
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x) {
      var n = arguments.length;
      if (!n) return innerTickSize;
      innerTickSize = +x;
      outerTickSize = +arguments[n - 1];
      return axis;
    };
    axis.innerTickSize = function(x) {
      if (!arguments.length) return innerTickSize;
      innerTickSize = +x;
      return axis;
    };
    axis.outerTickSize = function(x) {
      if (!arguments.length) return outerTickSize;
      outerTickSize = +x;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function() {
      return arguments.length && axis;
    };
    return axis;
  };
  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
    top: 1,
    right: 1,
    bottom: 1,
    left: 1
  };
  function d3_svg_axisX(selection, x0, x1) {
    selection.attr("transform", function(d) {
      var v0 = x0(d);
      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y0, y1) {
    selection.attr("transform", function(d) {
      var v0 = y0(d);
      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
    });
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
    function brush(g) {
      g.each(function() {
        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        var background = g.selectAll(".background").data([ 0 ]);
        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
        var resize = g.selectAll(".resize").data(resizes, d3_identity);
        resize.exit().remove();
        resize.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        resize.style("display", brush.empty() ? "none" : null);
        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
        if (x) {
          range = d3_scaleRange(x);
          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
          redrawX(gUpdate);
        }
        if (y) {
          range = d3_scaleRange(y);
          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
          redrawY(gUpdate);
        }
        redraw(gUpdate);
      });
    }
    brush.event = function(g) {
      g.each(function() {
        var event_ = event.of(this, arguments), extent1 = {
          x: xExtent,
          y: yExtent,
          i: xExtentDomain,
          j: yExtentDomain
        }, extent0 = this.__chart__ || extent1;
        this.__chart__ = extent1;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.brush", function() {
            xExtentDomain = extent0.i;
            yExtentDomain = extent0.j;
            xExtent = extent0.x;
            yExtent = extent0.y;
            event_({
              type: "brushstart"
            });
          }).tween("brush:brush", function() {
            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
            xExtentDomain = yExtentDomain = null;
            return function(t) {
              xExtent = extent1.x = xi(t);
              yExtent = extent1.y = yi(t);
              event_({
                type: "brush",
                mode: "resize"
              });
            };
          }).each("end.brush", function() {
            xExtentDomain = extent1.i;
            yExtentDomain = extent1.j;
            event_({
              type: "brush",
              mode: "resize"
            });
            event_({
              type: "brushend"
            });
          });
        } else {
          event_({
            type: "brushstart"
          });
          event_({
            type: "brush",
            mode: "resize"
          });
          event_({
            type: "brushend"
          });
        }
      });
    };
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", xExtent[0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", yExtent[0]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (d3.event.changedTouches) {
        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
      } else {
        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
      }
      g.interrupt().selectAll("*").interrupt();
      if (dragging) {
        origin[0] = xExtent[0] - origin[0];
        origin[1] = yExtent[0] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
        origin[0] = xExtent[ex];
        origin[1] = yExtent[ey];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= xExtent[1];
            origin[1] -= yExtent[1];
            dragging = 2;
          }
          d3_eventPreventDefault();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += xExtent[1];
          origin[1] += yExtent[1];
          dragging = 0;
          d3_eventPreventDefault();
        }
      }
      function brushmove() {
        var point = d3.mouse(target), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
            origin[0] = xExtent[+(point[0] < center[0])];
            origin[1] = yExtent[+(point[1] < center[1])];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0] != min || extent[1] != max) {
          if (i) yExtentDomain = null; else xExtentDomain = null;
          extent[0] = min;
          extent[1] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        dragRestore();
        event_({
          type: "brushend"
        });
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.clamp = function(z) {
      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        if (x) {
          if (xExtentDomain) {
            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
          } else {
            x0 = xExtent[0], x1 = xExtent[1];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          if (yExtentDomain) {
            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
          } else {
            y0 = yExtent[0], y1 = yExtent[1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        xExtentDomain = [ x0, x1 ];
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        yExtentDomain = [ y0, y1 ];
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
      }
      return brush;
    };
    brush.clear = function() {
      if (!brush.empty()) {
        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
        xExtentDomain = yExtentDomain = null;
      }
      return brush;
    };
    brush.empty = function() {
      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
  var d3_time_formatUtc = d3_time_format.utc;
  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  d3_time.second = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3_time.seconds = d3_time.second.range;
  d3_time.seconds.utc = d3_time.second.utc.range;
  d3_time.minute = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3_time.minutes = d3_time.minute.range;
  d3_time.minutes.utc = d3_time.minute.utc.range;
  d3_time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3_time.hours = d3_time.hour.range;
  d3_time.hours.utc = d3_time.hour.utc.range;
  d3_time.month = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3_time.months = d3_time.month.range;
  d3_time.months.utc = d3_time.month.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    function tickMethod(extent, count) {
      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
        return d / 31536e6;
      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
    }
    scale.nice = function(interval, skip) {
      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
      if (method) interval = method[0], skip = method[1];
      function skipped(date) {
        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
      }
      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
        floor: function(date) {
          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
          return date;
        },
        ceil: function(date) {
          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
          return date;
        }
      } : interval));
    };
    scale.ticks = function(interval, skip) {
      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
        range: interval
      }, skip ];
      if (method) interval = method[0], skip = method[1];
      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
    return d.getMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getMinutes();
  } ], [ "%I %p", function(d) {
    return d.getHours();
  } ], [ "%a %d", function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getDate() != 1;
  } ], [ "%B", function(d) {
    return d.getMonth();
  } ], [ "%Y", d3_true ] ]);
  var d3_time_scaleMilliseconds = {
    range: function(start, stop, step) {
      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
    },
    floor: d3_identity,
    ceil: d3_identity
  };
  d3_time_scaleLocalMethods.year = d3_time.year;
  d3_time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
    return d.getUTCMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getUTCSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getUTCMinutes();
  } ], [ "%I %p", function(d) {
    return d.getUTCHours();
  } ], [ "%a %d", function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getUTCDate() != 1;
  } ], [ "%B", function(d) {
    return d.getUTCMonth();
  } ], [ "%Y", d3_true ] ]);
  d3_time_scaleUtcMethods.year = d3_time.year.utc;
  d3_time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
  };
  d3.text = d3_xhrType(function(request) {
    return request.responseText;
  });
  d3.json = function(url, callback) {
    return d3_xhr(url, "application/json", d3_json, callback);
  };
  function d3_json(request) {
    return JSON.parse(request.responseText);
  }
  d3.html = function(url, callback) {
    return d3_xhr(url, "text/html", d3_html, callback);
  };
  function d3_html(request) {
    var range = d3_document.createRange();
    range.selectNode(d3_document.body);
    return range.createContextualFragment(request.responseText);
  }
  d3.xml = d3_xhrType(function(request) {
    return request.responseXML;
  });
  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
}();
},{}],63:[function(require,module,exports){
(function (Buffer){
var hasTypedArrays = false
if(typeof Float64Array !== "undefined") {
  var DOUBLE_VIEW = new Float64Array(1)
    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
  DOUBLE_VIEW[0] = 1.0
  hasTypedArrays = true
  if(UINT_VIEW[1] === 0x3ff00000) {
    //Use little endian
    module.exports = function doubleBitsLE(n) {
      DOUBLE_VIEW[0] = n
      return [ UINT_VIEW[0], UINT_VIEW[1] ]
    }
    function toDoubleLE(lo, hi) {
      UINT_VIEW[0] = lo
      UINT_VIEW[1] = hi
      return DOUBLE_VIEW[0]
    }
    module.exports.pack = toDoubleLE
    function lowUintLE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[0]
    }
    module.exports.lo = lowUintLE
    function highUintLE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[1]
    }
    module.exports.hi = highUintLE
  } else if(UINT_VIEW[0] === 0x3ff00000) {
    //Use big endian
    module.exports = function doubleBitsBE(n) {
      DOUBLE_VIEW[0] = n
      return [ UINT_VIEW[1], UINT_VIEW[0] ]
    }
    function toDoubleBE(lo, hi) {
      UINT_VIEW[1] = lo
      UINT_VIEW[0] = hi
      return DOUBLE_VIEW[0]
    }
    module.exports.pack = toDoubleBE
    function lowUintBE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[1]
    }
    module.exports.lo = lowUintBE
    function highUintBE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[0]
    }
    module.exports.hi = highUintBE
  } else {
    hasTypedArrays = false
  }
}
if(!hasTypedArrays) {
  var buffer = new Buffer(8)
  module.exports = function doubleBits(n) {
    buffer.writeDoubleLE(n, 0, true)
    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
  }
  function toDouble(lo, hi) {
    buffer.writeUInt32LE(lo, 0, true)
    buffer.writeUInt32LE(hi, 4, true)
    return buffer.readDoubleLE(0, true)
  }
  module.exports.pack = toDouble  
  function lowUint(n) {
    buffer.writeDoubleLE(n, 0, true)
    return buffer.readUInt32LE(0, true)
  }
  module.exports.lo = lowUint
  function highUint(n) {
    buffer.writeDoubleLE(n, 0, true)
    return buffer.readUInt32LE(4, true)
  }
  module.exports.hi = highUint
}

module.exports.sign = function(n) {
  return module.exports.hi(n) >>> 31
}

module.exports.exponent = function(n) {
  var b = module.exports.hi(n)
  return ((b<<1) >>> 21) - 1023
}

module.exports.fraction = function(n) {
  var lo = module.exports.lo(n)
  var hi = module.exports.hi(n)
  var b = hi & ((1<<20) - 1)
  if(hi & 0x7ff00000) {
    b += (1<<20)
  }
  return [lo, b]
}

module.exports.denormalized = function(n) {
  var hi = module.exports.hi(n)
  return !(hi & 0x7ff00000)
}
}).call(this,require("buffer").Buffer)
},{"buffer":40}],64:[function(require,module,exports){
"use strict"

function dupe_array(count, value, i) {
  var c = count[i]|0
  if(c <= 0) {
    return []
  }
  var result = new Array(c), j
  if(i === count.length-1) {
    for(j=0; j<c; ++j) {
      result[j] = value
    }
  } else {
    for(j=0; j<c; ++j) {
      result[j] = dupe_array(count, value, i+1)
    }
  }
  return result
}

function dupe_number(count, value) {
  var result, i
  result = new Array(count)
  for(i=0; i<count; ++i) {
    result[i] = value
  }
  return result
}

function dupe(count, value) {
  if(typeof value === "undefined") {
    value = 0
  }
  switch(typeof count) {
    case "number":
      if(count > 0) {
        return dupe_number(count|0, value)
      }
    break
    case "object":
      if(typeof (count.length) === "number") {
        return dupe_array(count, value, 0)
      }
    break
  }
  return []
}

module.exports = dupe
},{}],65:[function(require,module,exports){
"use strict"

module.exports = edgeToAdjacency

var uniq = require("uniq")

function edgeToAdjacency(edges, numVertices) {
  var numEdges = edges.length
  if(typeof numVertices !== "number") {
    numVertices = 0
    for(var i=0; i<numEdges; ++i) {
      var e = edges[i]
      numVertices = Math.max(numVertices, e[0], e[1])
    }
    numVertices = (numVertices|0) + 1
  }
  numVertices = numVertices|0
  var adj = new Array(numVertices)
  for(var i=0; i<numVertices; ++i) {
    adj[i] = []
  }
  for(var i=0; i<numEdges; ++i) {
    var e = edges[i]
    adj[e[0]].push(e[1])
    adj[e[1]].push(e[0])
  }
  for(var j=0; j<numVertices; ++j) {
    uniq(adj[j], function(a, b) {
      return a - b
    })
  }
  return adj
}
},{"uniq":207}],66:[function(require,module,exports){
(function (process,global){
/*!
 * @overview es6-promise - a tiny implementation of Promises/A+.
 * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
 * @license   Licensed under MIT license
 *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
 * @version   3.3.1
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (global.ES6Promise = factory());
}(this, (function () { 'use strict';

function objectOrFunction(x) {
  return typeof x === 'function' || typeof x === 'object' && x !== null;
}

function isFunction(x) {
  return typeof x === 'function';
}

var _isArray = undefined;
if (!Array.isArray) {
  _isArray = function (x) {
    return Object.prototype.toString.call(x) === '[object Array]';
  };
} else {
  _isArray = Array.isArray;
}

var isArray = _isArray;

var len = 0;
var vertxNext = undefined;
var customSchedulerFn = undefined;

var asap = function asap(callback, arg) {
  queue[len] = callback;
  queue[len + 1] = arg;
  len += 2;
  if (len === 2) {
    // If len is 2, that means that we need to schedule an async flush.
    // If additional callbacks are queued before the queue is flushed, they
    // will be processed by this flush that we are scheduling.
    if (customSchedulerFn) {
      customSchedulerFn(flush);
    } else {
      scheduleFlush();
    }
  }
};

function setScheduler(scheduleFn) {
  customSchedulerFn = scheduleFn;
}

function setAsap(asapFn) {
  asap = asapFn;
}

var browserWindow = typeof window !== 'undefined' ? window : undefined;
var browserGlobal = browserWindow || {};
var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';

// test for web worker but not in IE10
var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';

// node
function useNextTick() {
  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
  // see https://github.com/cujojs/when/issues/410 for details
  return function () {
    return process.nextTick(flush);
  };
}

// vertx
function useVertxTimer() {
  return function () {
    vertxNext(flush);
  };
}

function useMutationObserver() {
  var iterations = 0;
  var observer = new BrowserMutationObserver(flush);
  var node = document.createTextNode('');
  observer.observe(node, { characterData: true });

  return function () {
    node.data = iterations = ++iterations % 2;
  };
}

// web worker
function useMessageChannel() {
  var channel = new MessageChannel();
  channel.port1.onmessage = flush;
  return function () {
    return channel.port2.postMessage(0);
  };
}

function useSetTimeout() {
  // Store setTimeout reference so es6-promise will be unaffected by
  // other code modifying setTimeout (like sinon.useFakeTimers())
  var globalSetTimeout = setTimeout;
  return function () {
    return globalSetTimeout(flush, 1);
  };
}

var queue = new Array(1000);
function flush() {
  for (var i = 0; i < len; i += 2) {
    var callback = queue[i];
    var arg = queue[i + 1];

    callback(arg);

    queue[i] = undefined;
    queue[i + 1] = undefined;
  }

  len = 0;
}

function attemptVertx() {
  try {
    var r = require;
    var vertx = r('vertx');
    vertxNext = vertx.runOnLoop || vertx.runOnContext;
    return useVertxTimer();
  } catch (e) {
    return useSetTimeout();
  }
}

var scheduleFlush = undefined;
// Decide what async method to use to triggering processing of queued callbacks:
if (isNode) {
  scheduleFlush = useNextTick();
} else if (BrowserMutationObserver) {
  scheduleFlush = useMutationObserver();
} else if (isWorker) {
  scheduleFlush = useMessageChannel();
} else if (browserWindow === undefined && typeof require === 'function') {
  scheduleFlush = attemptVertx();
} else {
  scheduleFlush = useSetTimeout();
}

function then(onFulfillment, onRejection) {
  var _arguments = arguments;

  var parent = this;

  var child = new this.constructor(noop);

  if (child[PROMISE_ID] === undefined) {
    makePromise(child);
  }

  var _state = parent._state;

  if (_state) {
    (function () {
      var callback = _arguments[_state - 1];
      asap(function () {
        return invokeCallback(_state, child, callback, parent._result);
      });
    })();
  } else {
    subscribe(parent, child, onFulfillment, onRejection);
  }

  return child;
}

/**
  `Promise.resolve` returns a promise that will become resolved with the
  passed `value`. It is shorthand for the following:

  ```javascript
  let promise = new Promise(function(resolve, reject){
    resolve(1);
  });

  promise.then(function(value){
    // value === 1
  });
  ```

  Instead of writing the above, your code now simply becomes the following:

  ```javascript
  let promise = Promise.resolve(1);

  promise.then(function(value){
    // value === 1
  });
  ```

  @method resolve
  @static
  @param {Any} value value that the returned promise will be resolved with
  Useful for tooling.
  @return {Promise} a promise that will become fulfilled with the given
  `value`
*/
function resolve(object) {
  /*jshint validthis:true */
  var Constructor = this;

  if (object && typeof object === 'object' && object.constructor === Constructor) {
    return object;
  }

  var promise = new Constructor(noop);
  _resolve(promise, object);
  return promise;
}

var PROMISE_ID = Math.random().toString(36).substring(16);

function noop() {}

var PENDING = void 0;
var FULFILLED = 1;
var REJECTED = 2;

var GET_THEN_ERROR = new ErrorObject();

function selfFulfillment() {
  return new TypeError("You cannot resolve a promise with itself");
}

function cannotReturnOwn() {
  return new TypeError('A promises callback cannot return that same promise.');
}

function getThen(promise) {
  try {
    return promise.then;
  } catch (error) {
    GET_THEN_ERROR.error = error;
    return GET_THEN_ERROR;
  }
}

function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
  try {
    then.call(value, fulfillmentHandler, rejectionHandler);
  } catch (e) {
    return e;
  }
}

function handleForeignThenable(promise, thenable, then) {
  asap(function (promise) {
    var sealed = false;
    var error = tryThen(then, thenable, function (value) {
      if (sealed) {
        return;
      }
      sealed = true;
      if (thenable !== value) {
        _resolve(promise, value);
      } else {
        fulfill(promise, value);
      }
    }, function (reason) {
      if (sealed) {
        return;
      }
      sealed = true;

      _reject(promise, reason);
    }, 'Settle: ' + (promise._label || ' unknown promise'));

    if (!sealed && error) {
      sealed = true;
      _reject(promise, error);
    }
  }, promise);
}

function handleOwnThenable(promise, thenable) {
  if (thenable._state === FULFILLED) {
    fulfill(promise, thenable._result);
  } else if (thenable._state === REJECTED) {
    _reject(promise, thenable._result);
  } else {
    subscribe(thenable, undefined, function (value) {
      return _resolve(promise, value);
    }, function (reason) {
      return _reject(promise, reason);
    });
  }
}

function handleMaybeThenable(promise, maybeThenable, then$$) {
  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
    handleOwnThenable(promise, maybeThenable);
  } else {
    if (then$$ === GET_THEN_ERROR) {
      _reject(promise, GET_THEN_ERROR.error);
    } else if (then$$ === undefined) {
      fulfill(promise, maybeThenable);
    } else if (isFunction(then$$)) {
      handleForeignThenable(promise, maybeThenable, then$$);
    } else {
      fulfill(promise, maybeThenable);
    }
  }
}

function _resolve(promise, value) {
  if (promise === value) {
    _reject(promise, selfFulfillment());
  } else if (objectOrFunction(value)) {
    handleMaybeThenable(promise, value, getThen(value));
  } else {
    fulfill(promise, value);
  }
}

function publishRejection(promise) {
  if (promise._onerror) {
    promise._onerror(promise._result);
  }

  publish(promise);
}

function fulfill(promise, value) {
  if (promise._state !== PENDING) {
    return;
  }

  promise._result = value;
  promise._state = FULFILLED;

  if (promise._subscribers.length !== 0) {
    asap(publish, promise);
  }
}

function _reject(promise, reason) {
  if (promise._state !== PENDING) {
    return;
  }
  promise._state = REJECTED;
  promise._result = reason;

  asap(publishRejection, promise);
}

function subscribe(parent, child, onFulfillment, onRejection) {
  var _subscribers = parent._subscribers;
  var length = _subscribers.length;

  parent._onerror = null;

  _subscribers[length] = child;
  _subscribers[length + FULFILLED] = onFulfillment;
  _subscribers[length + REJECTED] = onRejection;

  if (length === 0 && parent._state) {
    asap(publish, parent);
  }
}

function publish(promise) {
  var subscribers = promise._subscribers;
  var settled = promise._state;

  if (subscribers.length === 0) {
    return;
  }

  var child = undefined,
      callback = undefined,
      detail = promise._result;

  for (var i = 0; i < subscribers.length; i += 3) {
    child = subscribers[i];
    callback = subscribers[i + settled];

    if (child) {
      invokeCallback(settled, child, callback, detail);
    } else {
      callback(detail);
    }
  }

  promise._subscribers.length = 0;
}

function ErrorObject() {
  this.error = null;
}

var TRY_CATCH_ERROR = new ErrorObject();

function tryCatch(callback, detail) {
  try {
    return callback(detail);
  } catch (e) {
    TRY_CATCH_ERROR.error = e;
    return TRY_CATCH_ERROR;
  }
}

function invokeCallback(settled, promise, callback, detail) {
  var hasCallback = isFunction(callback),
      value = undefined,
      error = undefined,
      succeeded = undefined,
      failed = undefined;

  if (hasCallback) {
    value = tryCatch(callback, detail);

    if (value === TRY_CATCH_ERROR) {
      failed = true;
      error = value.error;
      value = null;
    } else {
      succeeded = true;
    }

    if (promise === value) {
      _reject(promise, cannotReturnOwn());
      return;
    }
  } else {
    value = detail;
    succeeded = true;
  }

  if (promise._state !== PENDING) {
    // noop
  } else if (hasCallback && succeeded) {
      _resolve(promise, value);
    } else if (failed) {
      _reject(promise, error);
    } else if (settled === FULFILLED) {
      fulfill(promise, value);
    } else if (settled === REJECTED) {
      _reject(promise, value);
    }
}

function initializePromise(promise, resolver) {
  try {
    resolver(function resolvePromise(value) {
      _resolve(promise, value);
    }, function rejectPromise(reason) {
      _reject(promise, reason);
    });
  } catch (e) {
    _reject(promise, e);
  }
}

var id = 0;
function nextId() {
  return id++;
}

function makePromise(promise) {
  promise[PROMISE_ID] = id++;
  promise._state = undefined;
  promise._result = undefined;
  promise._subscribers = [];
}

function Enumerator(Constructor, input) {
  this._instanceConstructor = Constructor;
  this.promise = new Constructor(noop);

  if (!this.promise[PROMISE_ID]) {
    makePromise(this.promise);
  }

  if (isArray(input)) {
    this._input = input;
    this.length = input.length;
    this._remaining = input.length;

    this._result = new Array(this.length);

    if (this.length === 0) {
      fulfill(this.promise, this._result);
    } else {
      this.length = this.length || 0;
      this._enumerate();
      if (this._remaining === 0) {
        fulfill(this.promise, this._result);
      }
    }
  } else {
    _reject(this.promise, validationError());
  }
}

function validationError() {
  return new Error('Array Methods must be provided an Array');
};

Enumerator.prototype._enumerate = function () {
  var length = this.length;
  var _input = this._input;

  for (var i = 0; this._state === PENDING && i < length; i++) {
    this._eachEntry(_input[i], i);
  }
};

Enumerator.prototype._eachEntry = function (entry, i) {
  var c = this._instanceConstructor;
  var resolve$$ = c.resolve;

  if (resolve$$ === resolve) {
    var _then = getThen(entry);

    if (_then === then && entry._state !== PENDING) {
      this._settledAt(entry._state, i, entry._result);
    } else if (typeof _then !== 'function') {
      this._remaining--;
      this._result[i] = entry;
    } else if (c === Promise) {
      var promise = new c(noop);
      handleMaybeThenable(promise, entry, _then);
      this._willSettleAt(promise, i);
    } else {
      this._willSettleAt(new c(function (resolve$$) {
        return resolve$$(entry);
      }), i);
    }
  } else {
    this._willSettleAt(resolve$$(entry), i);
  }
};

Enumerator.prototype._settledAt = function (state, i, value) {
  var promise = this.promise;

  if (promise._state === PENDING) {
    this._remaining--;

    if (state === REJECTED) {
      _reject(promise, value);
    } else {
      this._result[i] = value;
    }
  }

  if (this._remaining === 0) {
    fulfill(promise, this._result);
  }
};

Enumerator.prototype._willSettleAt = function (promise, i) {
  var enumerator = this;

  subscribe(promise, undefined, function (value) {
    return enumerator._settledAt(FULFILLED, i, value);
  }, function (reason) {
    return enumerator._settledAt(REJECTED, i, reason);
  });
};

/**
  `Promise.all` accepts an array of promises, and returns a new promise which
  is fulfilled with an array of fulfillment values for the passed promises, or
  rejected with the reason of the first passed promise to be rejected. It casts all
  elements of the passed iterable to promises as it runs this algorithm.

  Example:

  ```javascript
  let promise1 = resolve(1);
  let promise2 = resolve(2);
  let promise3 = resolve(3);
  let promises = [ promise1, promise2, promise3 ];

  Promise.all(promises).then(function(array){
    // The array here would be [ 1, 2, 3 ];
  });
  ```

  If any of the `promises` given to `all` are rejected, the first promise
  that is rejected will be given as an argument to the returned promises's
  rejection handler. For example:

  Example:

  ```javascript
  let promise1 = resolve(1);
  let promise2 = reject(new Error("2"));
  let promise3 = reject(new Error("3"));
  let promises = [ promise1, promise2, promise3 ];

  Promise.all(promises).then(function(array){
    // Code here never runs because there are rejected promises!
  }, function(error) {
    // error.message === "2"
  });
  ```

  @method all
  @static
  @param {Array} entries array of promises
  @param {String} label optional string for labeling the promise.
  Useful for tooling.
  @return {Promise} promise that is fulfilled when all `promises` have been
  fulfilled, or rejected if any of them become rejected.
  @static
*/
function all(entries) {
  return new Enumerator(this, entries).promise;
}

/**
  `Promise.race` returns a new promise which is settled in the same way as the
  first passed promise to settle.

  Example:

  ```javascript
  let promise1 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 1');
    }, 200);
  });

  let promise2 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 2');
    }, 100);
  });

  Promise.race([promise1, promise2]).then(function(result){
    // result === 'promise 2' because it was resolved before promise1
    // was resolved.
  });
  ```

  `Promise.race` is deterministic in that only the state of the first
  settled promise matters. For example, even if other promises given to the
  `promises` array argument are resolved, but the first settled promise has
  become rejected before the other promises became fulfilled, the returned
  promise will become rejected:

  ```javascript
  let promise1 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 1');
    }, 200);
  });

  let promise2 = new Promise(function(resolve, reject){
    setTimeout(function(){
      reject(new Error('promise 2'));
    }, 100);
  });

  Promise.race([promise1, promise2]).then(function(result){
    // Code here never runs
  }, function(reason){
    // reason.message === 'promise 2' because promise 2 became rejected before
    // promise 1 became fulfilled
  });
  ```

  An example real-world use case is implementing timeouts:

  ```javascript
  Promise.race([ajax('foo.json'), timeout(5000)])
  ```

  @method race
  @static
  @param {Array} promises array of promises to observe
  Useful for tooling.
  @return {Promise} a promise which settles in the same way as the first passed
  promise to settle.
*/
function race(entries) {
  /*jshint validthis:true */
  var Constructor = this;

  if (!isArray(entries)) {
    return new Constructor(function (_, reject) {
      return reject(new TypeError('You must pass an array to race.'));
    });
  } else {
    return new Constructor(function (resolve, reject) {
      var length = entries.length;
      for (var i = 0; i < length; i++) {
        Constructor.resolve(entries[i]).then(resolve, reject);
      }
    });
  }
}

/**
  `Promise.reject` returns a promise rejected with the passed `reason`.
  It is shorthand for the following:

  ```javascript
  let promise = new Promise(function(resolve, reject){
    reject(new Error('WHOOPS'));
  });

  promise.then(function(value){
    // Code here doesn't run because the promise is rejected!
  }, function(reason){
    // reason.message === 'WHOOPS'
  });
  ```

  Instead of writing the above, your code now simply becomes the following:

  ```javascript
  let promise = Promise.reject(new Error('WHOOPS'));

  promise.then(function(value){
    // Code here doesn't run because the promise is rejected!
  }, function(reason){
    // reason.message === 'WHOOPS'
  });
  ```

  @method reject
  @static
  @param {Any} reason value that the returned promise will be rejected with.
  Useful for tooling.
  @return {Promise} a promise rejected with the given `reason`.
*/
function reject(reason) {
  /*jshint validthis:true */
  var Constructor = this;
  var promise = new Constructor(noop);
  _reject(promise, reason);
  return promise;
}

function needsResolver() {
  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
}

function needsNew() {
  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
}

/**
  Promise objects represent the eventual result of an asynchronous operation. The
  primary way of interacting with a promise is through its `then` method, which
  registers callbacks to receive either a promise's eventual value or the reason
  why the promise cannot be fulfilled.

  Terminology
  -----------

  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
  - `thenable` is an object or function that defines a `then` method.
  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
  - `exception` is a value that is thrown using the throw statement.
  - `reason` is a value that indicates why a promise was rejected.
  - `settled` the final resting state of a promise, fulfilled or rejected.

  A promise can be in one of three states: pending, fulfilled, or rejected.

  Promises that are fulfilled have a fulfillment value and are in the fulfilled
  state.  Promises that are rejected have a rejection reason and are in the
  rejected state.  A fulfillment value is never a thenable.

  Promises can also be said to *resolve* a value.  If this value is also a
  promise, then the original promise's settled state will match the value's
  settled state.  So a promise that *resolves* a promise that rejects will
  itself reject, and a promise that *resolves* a promise that fulfills will
  itself fulfill.


  Basic Usage:
  ------------

  ```js
  let promise = new Promise(function(resolve, reject) {
    // on success
    resolve(value);

    // on failure
    reject(reason);
  });

  promise.then(function(value) {
    // on fulfillment
  }, function(reason) {
    // on rejection
  });
  ```

  Advanced Usage:
  ---------------

  Promises shine when abstracting away asynchronous interactions such as
  `XMLHttpRequest`s.

  ```js
  function getJSON(url) {
    return new Promise(function(resolve, reject){
      let xhr = new XMLHttpRequest();

      xhr.open('GET', url);
      xhr.onreadystatechange = handler;
      xhr.responseType = 'json';
      xhr.setRequestHeader('Accept', 'application/json');
      xhr.send();

      function handler() {
        if (this.readyState === this.DONE) {
          if (this.status === 200) {
            resolve(this.response);
          } else {
            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
          }
        }
      };
    });
  }

  getJSON('/posts.json').then(function(json) {
    // on fulfillment
  }, function(reason) {
    // on rejection
  });
  ```

  Unlike callbacks, promises are great composable primitives.

  ```js
  Promise.all([
    getJSON('/posts'),
    getJSON('/comments')
  ]).then(function(values){
    values[0] // => postsJSON
    values[1] // => commentsJSON

    return values;
  });
  ```

  @class Promise
  @param {function} resolver
  Useful for tooling.
  @constructor
*/
function Promise(resolver) {
  this[PROMISE_ID] = nextId();
  this._result = this._state = undefined;
  this._subscribers = [];

  if (noop !== resolver) {
    typeof resolver !== 'function' && needsResolver();
    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
  }
}

Promise.all = all;
Promise.race = race;
Promise.resolve = resolve;
Promise.reject = reject;
Promise._setScheduler = setScheduler;
Promise._setAsap = setAsap;
Promise._asap = asap;

Promise.prototype = {
  constructor: Promise,

  /**
    The primary way of interacting with a promise is through its `then` method,
    which registers callbacks to receive either a promise's eventual value or the
    reason why the promise cannot be fulfilled.
  
    ```js
    findUser().then(function(user){
      // user is available
    }, function(reason){
      // user is unavailable, and you are given the reason why
    });
    ```
  
    Chaining
    --------
  
    The return value of `then` is itself a promise.  This second, 'downstream'
    promise is resolved with the return value of the first promise's fulfillment
    or rejection handler, or rejected if the handler throws an exception.
  
    ```js
    findUser().then(function (user) {
      return user.name;
    }, function (reason) {
      return 'default name';
    }).then(function (userName) {
      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
      // will be `'default name'`
    });
  
    findUser().then(function (user) {
      throw new Error('Found user, but still unhappy');
    }, function (reason) {
      throw new Error('`findUser` rejected and we're unhappy');
    }).then(function (value) {
      // never reached
    }, function (reason) {
      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
    });
    ```
    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
  
    ```js
    findUser().then(function (user) {
      throw new PedagogicalException('Upstream error');
    }).then(function (value) {
      // never reached
    }).then(function (value) {
      // never reached
    }, function (reason) {
      // The `PedgagocialException` is propagated all the way down to here
    });
    ```
  
    Assimilation
    ------------
  
    Sometimes the value you want to propagate to a downstream promise can only be
    retrieved asynchronously. This can be achieved by returning a promise in the
    fulfillment or rejection handler. The downstream promise will then be pending
    until the returned promise is settled. This is called *assimilation*.
  
    ```js
    findUser().then(function (user) {
      return findCommentsByAuthor(user);
    }).then(function (comments) {
      // The user's comments are now available
    });
    ```
  
    If the assimliated promise rejects, then the downstream promise will also reject.
  
    ```js
    findUser().then(function (user) {
      return findCommentsByAuthor(user);
    }).then(function (comments) {
      // If `findCommentsByAuthor` fulfills, we'll have the value here
    }, function (reason) {
      // If `findCommentsByAuthor` rejects, we'll have the reason here
    });
    ```
  
    Simple Example
    --------------
  
    Synchronous Example
  
    ```javascript
    let result;
  
    try {
      result = findResult();
      // success
    } catch(reason) {
      // failure
    }
    ```
  
    Errback Example
  
    ```js
    findResult(function(result, err){
      if (err) {
        // failure
      } else {
        // success
      }
    });
    ```
  
    Promise Example;
  
    ```javascript
    findResult().then(function(result){
      // success
    }, function(reason){
      // failure
    });
    ```
  
    Advanced Example
    --------------
  
    Synchronous Example
  
    ```javascript
    let author, books;
  
    try {
      author = findAuthor();
      books  = findBooksByAuthor(author);
      // success
    } catch(reason) {
      // failure
    }
    ```
  
    Errback Example
  
    ```js
  
    function foundBooks(books) {
  
    }
  
    function failure(reason) {
  
    }
  
    findAuthor(function(author, err){
      if (err) {
        failure(err);
        // failure
      } else {
        try {
          findBoooksByAuthor(author, function(books, err) {
            if (err) {
              failure(err);
            } else {
              try {
                foundBooks(books);
              } catch(reason) {
                failure(reason);
              }
            }
          });
        } catch(error) {
          failure(err);
        }
        // success
      }
    });
    ```
  
    Promise Example;
  
    ```javascript
    findAuthor().
      then(findBooksByAuthor).
      then(function(books){
        // found books
    }).catch(function(reason){
      // something went wrong
    });
    ```
  
    @method then
    @param {Function} onFulfilled
    @param {Function} onRejected
    Useful for tooling.
    @return {Promise}
  */
  then: then,

  /**
    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
    as the catch block of a try/catch statement.
  
    ```js
    function findAuthor(){
      throw new Error('couldn't find that author');
    }
  
    // synchronous
    try {
      findAuthor();
    } catch(reason) {
      // something went wrong
    }
  
    // async with promises
    findAuthor().catch(function(reason){
      // something went wrong
    });
    ```
  
    @method catch
    @param {Function} onRejection
    Useful for tooling.
    @return {Promise}
  */
  'catch': function _catch(onRejection) {
    return this.then(null, onRejection);
  }
};

function polyfill() {
    var local = undefined;

    if (typeof global !== 'undefined') {
        local = global;
    } else if (typeof self !== 'undefined') {
        local = self;
    } else {
        try {
            local = Function('return this')();
        } catch (e) {
            throw new Error('polyfill failed because global object is unavailable in this environment');
        }
    }

    var P = local.Promise;

    if (P) {
        var promiseToString = null;
        try {
            promiseToString = Object.prototype.toString.call(P.resolve());
        } catch (e) {
            // silently ignored
        }

        if (promiseToString === '[object Promise]' && !P.cast) {
            return;
        }
    }

    local.Promise = Promise;
}

polyfill();
// Strange compat..
Promise.polyfill = polyfill;
Promise.Promise = Promise;

return Promise;

})));

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":174}],67:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      } else {
        // At least give some kind of context to the user
        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
        err.context = er;
        throw err;
      }
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        args = Array.prototype.slice.call(arguments, 1);
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    args = Array.prototype.slice.call(arguments, 1);
    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else if (listeners) {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.prototype.listenerCount = function(type) {
  if (this._events) {
    var evlistener = this._events[type];

    if (isFunction(evlistener))
      return 1;
    else if (evlistener)
      return evlistener.length;
  }
  return 0;
};

EventEmitter.listenerCount = function(emitter, type) {
  return emitter.listenerCount(type);
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],68:[function(require,module,exports){
/**
 * inspired by is-number <https://github.com/jonschlinkert/is-number>
 * but significantly simplified and sped up by ignoring number and string constructors
 * ie these return false:
 *   new Number(1)
 *   new String('1')
 */

'use strict';

/**
 * Is this string all whitespace?
 * This solution kind of makes my brain hurt, but it's significantly faster
 * than !str.trim() or any other solution I could find.
 *
 * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
 * and verified with:
 *
 *  for(var i = 0; i < 65536; i++) {
 *      var s = String.fromCharCode(i);
 *      if(+s===0 && !s.trim()) console.log(i, s);
 *  }
 *
 * which counts a couple of these as *not* whitespace, but finds nothing else
 * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
 * that there are no whitespace characters above this, and code points above
 * this do not map onto white space characters.
 */
function allBlankCharCodes(str){
    var l = str.length,
        a;
    for(var i = 0; i < l; i++) {
        a = str.charCodeAt(i);
        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
                return false;
        }
    }
    return true;
}

module.exports = function(n) {
    var type = typeof n;
    if(type === 'string') {
        var original = n;
        n = +n;
        // whitespace strings cast to zero - filter them out
        if(n===0 && allBlankCharCodes(original)) return false;
    }
    else if(type !== 'number') return false;

    return n - n < 1;
};

},{}],69:[function(require,module,exports){
/**
 * @module  font-atlas-sdf
 */

'use strict'

var SDF = require('tiny-sdf')
var optical = require('optical-properties')

module.exports = atlas


function atlas(options) {
	options = options || {}

	var canvas = options.canvas || document.createElement('canvas')
	var family = options.family || 'sans-serif'
	var shape = options.shape || [512, 512]
	var step = options.step || [32, 32]
	var size = parseFloat(options.size) || 16
	var chars = options.chars || [32, 126]
	var bufferSize = Math.floor((step[0] - size)/2)
	var radius = options.radius || bufferSize*1.5
	var sdf = new SDF(size, bufferSize, radius, 0, family)
	var vAlign = options.align == null ? 'optical' : options.align
	var fit = options.fit == null || options.fit == true ? .5 : options.fit
	var i, j

	if (!Array.isArray(chars)) {
		chars = String(chars).split('')
	}
	else if (
		chars.length === 2
		&& typeof chars[0] === 'number'
		&& typeof chars[1] === 'number'
	) {
		var newchars = []

		for (i = chars[0], j = 0; i <= chars[1]; i++) {
			newchars[j++] = String.fromCharCode(i)
		}

		chars = newchars
	}

	shape = shape.slice()
	canvas.width  = shape[0]
	canvas.height = shape[1]

	var ctx = canvas.getContext('2d')

	ctx.fillStyle = '#000'
	ctx.fillRect(0, 0, canvas.width, canvas.height)
	ctx.textBaseline = 'middle'

	var w = step[0], h = step[1]
	var x = 0
	var y = 0
	var ratio = size/h
	var len = Math.min(chars.length, Math.floor(shape[0]/w) * Math.ceil(shape[1]/h))

	// hack tiny-sdf to render centered
	//FIXME: get rif of it by [possibly] PR to tiny-sdf
	var align = sdf.ctx.textAlign
	var buffer = sdf.buffer
	var middle = sdf.middle

	sdf.ctx.textAlign = 'center'
	sdf.buffer = sdf.size/2

	for (i = 0; i < len; i++) {
		if (!chars[i]) continue;

		var props = getProps(chars[i], family, ratio)
		var scale = 1, diff = [0, 0]

		//hack tinysdf char-draw method
		if (fit) {
			var fitRatio = fit
			if (Array.isArray(fit)) {
				fitRatio = fit[i]
			}
			var vert = (props.bounds[3]-props.bounds[1])*.5
			var horiz = (props.bounds[2]-props.bounds[0])*.5
			var maxSide = Math.max( vert , horiz )
			var diag = Math.sqrt(vert*vert + horiz*horiz)
			var maxDist = props.radius*.333 + maxSide*.333 + diag*.333

			scale = h*fitRatio / (maxDist*h*2)
			sdf.ctx.font = size*scale + 'px ' + family;
		}
		else {
			sdf.ctx.font = size + 'px ' + family;
		}

		if (vAlign) {
			if (vAlign === 'optical' || vAlign === true) {
				diff = [
					w*.5 - w*props.center[0],
					h*.5 - h*props.center[1]
				]
			}
			else {
				diff = [
					w*.5 - w*(props.bounds[2] + props.bounds[0])*.5,
					h*.5 - h*(props.bounds[3] + props.bounds[1])*.5
				]
			}
			sdf.middle = middle + diff[1]*scale
		}

		//calc sdf
		var data = sdf.draw(chars[i])

		// ctx.putImageData(data, x + diff[0]*scale, y + diff[1]*scale, 0, -diff[1]*scale, data.width, data.height)
		ctx.putImageData(data, x + diff[0]*scale, y)

		x += step[0]
		if (x > shape[0] - step[0]) {
			x = 0
			y += step[1]
		}
	}

	// unhack tiny-sdf
	sdf.ctx.textAlign = align
	sdf.buffer = buffer
	sdf.middle = middle

	return canvas
}

var cache = {}
function getProps(char, family, ratio) {
	if (cache[family] && cache[family][char]) return cache[family][char]

	var propsSize = 200
	var propsFs = propsSize * ratio
	var props = optical(char, {size: propsSize, fontSize: propsFs, fontFamily: family})

	if (!cache[family]) cache[family] = {}

	var relProps = {
		center: [
			props.center[0]/propsSize,
			props.center[1]/propsSize
		],
		bounds: props.bounds.map(function (v) {
			return v/propsSize
		}),
		radius: props.radius/propsSize
	}

	cache[family][char] = relProps

	return relProps
}

},{"optical-properties":165,"tiny-sdf":199}],70:[function(require,module,exports){
"use strict"

module.exports = createRBTree

var RED   = 0
var BLACK = 1

function RBNode(color, key, value, left, right, count) {
  this._color = color
  this.key = key
  this.value = value
  this.left = left
  this.right = right
  this._count = count
}

function cloneNode(node) {
  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
}

function repaint(color, node) {
  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
}

function recount(node) {
  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
}

function RedBlackTree(compare, root) {
  this._compare = compare
  this.root = root
}

var proto = RedBlackTree.prototype

Object.defineProperty(proto, "keys", {
  get: function() {
    var result = []
    this.forEach(function(k,v) {
      result.push(k)
    })
    return result
  }
})

Object.defineProperty(proto, "values", {
  get: function() {
    var result = []
    this.forEach(function(k,v) {
      result.push(v)
    })
    return result
  }
})

//Returns the number of nodes in the tree
Object.defineProperty(proto, "length", {
  get: function() {
    if(this.root) {
      return this.root._count
    }
    return 0
  }
})

//Insert a new item into the tree
proto.insert = function(key, value) {
  var cmp = this._compare
  //Find point to insert new node at
  var n = this.root
  var n_stack = []
  var d_stack = []
  while(n) {
    var d = cmp(key, n.key)
    n_stack.push(n)
    d_stack.push(d)
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  //Rebuild path to leaf node
  n_stack.push(new RBNode(RED, key, value, null, null, 1))
  for(var s=n_stack.length-2; s>=0; --s) {
    var n = n_stack[s]
    if(d_stack[s] <= 0) {
      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
    } else {
      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
    }
  }
  //Rebalance tree using rotations
  //console.log("start insert", key, d_stack)
  for(var s=n_stack.length-1; s>1; --s) {
    var p = n_stack[s-1]
    var n = n_stack[s]
    if(p._color === BLACK || n._color === BLACK) {
      break
    }
    var pp = n_stack[s-2]
    if(pp.left === p) {
      if(p.left === n) {
        var y = pp.right
        if(y && y._color === RED) {
          //console.log("LLr")
          p._color = BLACK
          pp.right = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("LLb")
          pp._color = RED
          pp.left = p.right
          p._color = BLACK
          p.right = pp
          n_stack[s-2] = p
          n_stack[s-1] = n
          recount(pp)
          recount(p)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.left === pp) {
              ppp.left = p
            } else {
              ppp.right = p
            }
          }
          break
        }
      } else {
        var y = pp.right
        if(y && y._color === RED) {
          //console.log("LRr")
          p._color = BLACK
          pp.right = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("LRb")
          p.right = n.left
          pp._color = RED
          pp.left = n.right
          n._color = BLACK
          n.left = p
          n.right = pp
          n_stack[s-2] = n
          n_stack[s-1] = p
          recount(pp)
          recount(p)
          recount(n)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.left === pp) {
              ppp.left = n
            } else {
              ppp.right = n
            }
          }
          break
        }
      }
    } else {
      if(p.right === n) {
        var y = pp.left
        if(y && y._color === RED) {
          //console.log("RRr", y.key)
          p._color = BLACK
          pp.left = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("RRb")
          pp._color = RED
          pp.right = p.left
          p._color = BLACK
          p.left = pp
          n_stack[s-2] = p
          n_stack[s-1] = n
          recount(pp)
          recount(p)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.right === pp) {
              ppp.right = p
            } else {
              ppp.left = p
            }
          }
          break
        }
      } else {
        var y = pp.left
        if(y && y._color === RED) {
          //console.log("RLr")
          p._color = BLACK
          pp.left = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("RLb")
          p.left = n.right
          pp._color = RED
          pp.right = n.left
          n._color = BLACK
          n.right = p
          n.left = pp
          n_stack[s-2] = n
          n_stack[s-1] = p
          recount(pp)
          recount(p)
          recount(n)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.right === pp) {
              ppp.right = n
            } else {
              ppp.left = n
            }
          }
          break
        }
      }
    }
  }
  //Return new tree
  n_stack[0]._color = BLACK
  return new RedBlackTree(cmp, n_stack[0])
}


//Visit all nodes inorder
function doVisitFull(visit, node) {
  if(node.left) {
    var v = doVisitFull(visit, node.left)
    if(v) { return v }
  }
  var v = visit(node.key, node.value)
  if(v) { return v }
  if(node.right) {
    return doVisitFull(visit, node.right)
  }
}

//Visit half nodes in order
function doVisitHalf(lo, compare, visit, node) {
  var l = compare(lo, node.key)
  if(l <= 0) {
    if(node.left) {
      var v = doVisitHalf(lo, compare, visit, node.left)
      if(v) { return v }
    }
    var v = visit(node.key, node.value)
    if(v) { return v }
  }
  if(node.right) {
    return doVisitHalf(lo, compare, visit, node.right)
  }
}

//Visit all nodes within a range
function doVisit(lo, hi, compare, visit, node) {
  var l = compare(lo, node.key)
  var h = compare(hi, node.key)
  var v
  if(l <= 0) {
    if(node.left) {
      v = doVisit(lo, hi, compare, visit, node.left)
      if(v) { return v }
    }
    if(h > 0) {
      v = visit(node.key, node.value)
      if(v) { return v }
    }
  }
  if(h > 0 && node.right) {
    return doVisit(lo, hi, compare, visit, node.right)
  }
}


proto.forEach = function rbTreeForEach(visit, lo, hi) {
  if(!this.root) {
    return
  }
  switch(arguments.length) {
    case 1:
      return doVisitFull(visit, this.root)
    break

    case 2:
      return doVisitHalf(lo, this._compare, visit, this.root)
    break

    case 3:
      if(this._compare(lo, hi) >= 0) {
        return
      }
      return doVisit(lo, hi, this._compare, visit, this.root)
    break
  }
}

//First item in list
Object.defineProperty(proto, "begin", {
  get: function() {
    var stack = []
    var n = this.root
    while(n) {
      stack.push(n)
      n = n.left
    }
    return new RedBlackTreeIterator(this, stack)
  }
})

//Last item in list
Object.defineProperty(proto, "end", {
  get: function() {
    var stack = []
    var n = this.root
    while(n) {
      stack.push(n)
      n = n.right
    }
    return new RedBlackTreeIterator(this, stack)
  }
})

//Find the ith item in the tree
proto.at = function(idx) {
  if(idx < 0) {
    return new RedBlackTreeIterator(this, [])
  }
  var n = this.root
  var stack = []
  while(true) {
    stack.push(n)
    if(n.left) {
      if(idx < n.left._count) {
        n = n.left
        continue
      }
      idx -= n.left._count
    }
    if(!idx) {
      return new RedBlackTreeIterator(this, stack)
    }
    idx -= 1
    if(n.right) {
      if(idx >= n.right._count) {
        break
      }
      n = n.right
    } else {
      break
    }
  }
  return new RedBlackTreeIterator(this, [])
}

proto.ge = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d <= 0) {
      last_ptr = stack.length
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

proto.gt = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d < 0) {
      last_ptr = stack.length
    }
    if(d < 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

proto.lt = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d > 0) {
      last_ptr = stack.length
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

proto.le = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d >= 0) {
      last_ptr = stack.length
    }
    if(d < 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

//Finds the item with key if it exists
proto.find = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d === 0) {
      return new RedBlackTreeIterator(this, stack)
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  return new RedBlackTreeIterator(this, [])
}

//Removes item with key from tree
proto.remove = function(key) {
  var iter = this.find(key)
  if(iter) {
    return iter.remove()
  }
  return this
}

//Returns the item at `key`
proto.get = function(key) {
  var cmp = this._compare
  var n = this.root
  while(n) {
    var d = cmp(key, n.key)
    if(d === 0) {
      return n.value
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  return
}

//Iterator for red black tree
function RedBlackTreeIterator(tree, stack) {
  this.tree = tree
  this._stack = stack
}

var iproto = RedBlackTreeIterator.prototype

//Test if iterator is valid
Object.defineProperty(iproto, "valid", {
  get: function() {
    return this._stack.length > 0
  }
})

//Node of the iterator
Object.defineProperty(iproto, "node", {
  get: function() {
    if(this._stack.length > 0) {
      return this._stack[this._stack.length-1]
    }
    return null
  },
  enumerable: true
})

//Makes a copy of an iterator
iproto.clone = function() {
  return new RedBlackTreeIterator(this.tree, this._stack.slice())
}

//Swaps two nodes
function swapNode(n, v) {
  n.key = v.key
  n.value = v.value
  n.left = v.left
  n.right = v.right
  n._color = v._color
  n._count = v._count
}

//Fix up a double black node in a tree
function fixDoubleBlack(stack) {
  var n, p, s, z
  for(var i=stack.length-1; i>=0; --i) {
    n = stack[i]
    if(i === 0) {
      n._color = BLACK
      return
    }
    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
    p = stack[i-1]
    if(p.left === n) {
      //console.log("left child")
      s = p.right
      if(s.right && s.right._color === RED) {
        //console.log("case 1: right sibling child red")
        s = p.right = cloneNode(s)
        z = s.right = cloneNode(s.right)
        p.right = s.left
        s.left = p
        s.right = z
        s._color = p._color
        n._color = BLACK
        p._color = BLACK
        z._color = BLACK
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.left === p) {
            pp.left = s
          } else {
            pp.right = s
          }
        }
        stack[i-1] = s
        return
      } else if(s.left && s.left._color === RED) {
        //console.log("case 1: left sibling child red")
        s = p.right = cloneNode(s)
        z = s.left = cloneNode(s.left)
        p.right = z.left
        s.left = z.right
        z.left = p
        z.right = s
        z._color = p._color
        p._color = BLACK
        s._color = BLACK
        n._color = BLACK
        recount(p)
        recount(s)
        recount(z)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.left === p) {
            pp.left = z
          } else {
            pp.right = z
          }
        }
        stack[i-1] = z
        return
      }
      if(s._color === BLACK) {
        if(p._color === RED) {
          //console.log("case 2: black sibling, red parent", p.right.value)
          p._color = BLACK
          p.right = repaint(RED, s)
          return
        } else {
          //console.log("case 2: black sibling, black parent", p.right.value)
          p.right = repaint(RED, s)
          continue  
        }
      } else {
        //console.log("case 3: red sibling")
        s = cloneNode(s)
        p.right = s.left
        s.left = p
        s._color = p._color
        p._color = RED
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.left === p) {
            pp.left = s
          } else {
            pp.right = s
          }
        }
        stack[i-1] = s
        stack[i] = p
        if(i+1 < stack.length) {
          stack[i+1] = n
        } else {
          stack.push(n)
        }
        i = i+2
      }
    } else {
      //console.log("right child")
      s = p.left
      if(s.left && s.left._color === RED) {
        //console.log("case 1: left sibling child red", p.value, p._color)
        s = p.left = cloneNode(s)
        z = s.left = cloneNode(s.left)
        p.left = s.right
        s.right = p
        s.left = z
        s._color = p._color
        n._color = BLACK
        p._color = BLACK
        z._color = BLACK
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.right === p) {
            pp.right = s
          } else {
            pp.left = s
          }
        }
        stack[i-1] = s
        return
      } else if(s.right && s.right._color === RED) {
        //console.log("case 1: right sibling child red")
        s = p.left = cloneNode(s)
        z = s.right = cloneNode(s.right)
        p.left = z.right
        s.right = z.left
        z.right = p
        z.left = s
        z._color = p._color
        p._color = BLACK
        s._color = BLACK
        n._color = BLACK
        recount(p)
        recount(s)
        recount(z)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.right === p) {
            pp.right = z
          } else {
            pp.left = z
          }
        }
        stack[i-1] = z
        return
      }
      if(s._color === BLACK) {
        if(p._color === RED) {
          //console.log("case 2: black sibling, red parent")
          p._color = BLACK
          p.left = repaint(RED, s)
          return
        } else {
          //console.log("case 2: black sibling, black parent")
          p.left = repaint(RED, s)
          continue  
        }
      } else {
        //console.log("case 3: red sibling")
        s = cloneNode(s)
        p.left = s.right
        s.right = p
        s._color = p._color
        p._color = RED
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.right === p) {
            pp.right = s
          } else {
            pp.left = s
          }
        }
        stack[i-1] = s
        stack[i] = p
        if(i+1 < stack.length) {
          stack[i+1] = n
        } else {
          stack.push(n)
        }
        i = i+2
      }
    }
  }
}

//Removes item at iterator from tree
iproto.remove = function() {
  var stack = this._stack
  if(stack.length === 0) {
    return this.tree
  }
  //First copy path to node
  var cstack = new Array(stack.length)
  var n = stack[stack.length-1]
  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
  for(var i=stack.length-2; i>=0; --i) {
    var n = stack[i]
    if(n.left === stack[i+1]) {
      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
    } else {
      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
    }
  }

  //Get node
  n = cstack[cstack.length-1]
  //console.log("start remove: ", n.value)

  //If not leaf, then swap with previous node
  if(n.left && n.right) {
    //console.log("moving to leaf")

    //First walk to previous leaf
    var split = cstack.length
    n = n.left
    while(n.right) {
      cstack.push(n)
      n = n.right
    }
    //Copy path to leaf
    var v = cstack[split-1]
    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
    cstack[split-1].key = n.key
    cstack[split-1].value = n.value

    //Fix up stack
    for(var i=cstack.length-2; i>=split; --i) {
      n = cstack[i]
      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
    }
    cstack[split-1].left = cstack[split]
  }
  //console.log("stack=", cstack.map(function(v) { return v.value }))

  //Remove leaf node
  n = cstack[cstack.length-1]
  if(n._color === RED) {
    //Easy case: removing red leaf
    //console.log("RED leaf")
    var p = cstack[cstack.length-2]
    if(p.left === n) {
      p.left = null
    } else if(p.right === n) {
      p.right = null
    }
    cstack.pop()
    for(var i=0; i<cstack.length; ++i) {
      cstack[i]._count--
    }
    return new RedBlackTree(this.tree._compare, cstack[0])
  } else {
    if(n.left || n.right) {
      //Second easy case:  Single child black parent
      //console.log("BLACK single child")
      if(n.left) {
        swapNode(n, n.left)
      } else if(n.right) {
        swapNode(n, n.right)
      }
      //Child must be red, so repaint it black to balance color
      n._color = BLACK
      for(var i=0; i<cstack.length-1; ++i) {
        cstack[i]._count--
      }
      return new RedBlackTree(this.tree._compare, cstack[0])
    } else if(cstack.length === 1) {
      //Third easy case: root
      //console.log("ROOT")
      return new RedBlackTree(this.tree._compare, null)
    } else {
      //Hard case: Repaint n, and then do some nasty stuff
      //console.log("BLACK leaf no children")
      for(var i=0; i<cstack.length; ++i) {
        cstack[i]._count--
      }
      var parent = cstack[cstack.length-2]
      fixDoubleBlack(cstack)
      //Fix up links
      if(parent.left === n) {
        parent.left = null
      } else {
        parent.right = null
      }
    }
  }
  return new RedBlackTree(this.tree._compare, cstack[0])
}

//Returns key
Object.defineProperty(iproto, "key", {
  get: function() {
    if(this._stack.length > 0) {
      return this._stack[this._stack.length-1].key
    }
    return
  },
  enumerable: true
})

//Returns value
Object.defineProperty(iproto, "value", {
  get: function() {
    if(this._stack.length > 0) {
      return this._stack[this._stack.length-1].value
    }
    return
  },
  enumerable: true
})


//Returns the position of this iterator in the sorted list
Object.defineProperty(iproto, "index", {
  get: function() {
    var idx = 0
    var stack = this._stack
    if(stack.length === 0) {
      var r = this.tree.root
      if(r) {
        return r._count
      }
      return 0
    } else if(stack[stack.length-1].left) {
      idx = stack[stack.length-1].left._count
    }
    for(var s=stack.length-2; s>=0; --s) {
      if(stack[s+1] === stack[s].right) {
        ++idx
        if(stack[s].left) {
          idx += stack[s].left._count
        }
      }
    }
    return idx
  },
  enumerable: true
})

//Advances iterator to next element in list
iproto.next = function() {
  var stack = this._stack
  if(stack.length === 0) {
    return
  }
  var n = stack[stack.length-1]
  if(n.right) {
    n = n.right
    while(n) {
      stack.push(n)
      n = n.left
    }
  } else {
    stack.pop()
    while(stack.length > 0 && stack[stack.length-1].right === n) {
      n = stack[stack.length-1]
      stack.pop()
    }
  }
}

//Checks if iterator is at end of tree
Object.defineProperty(iproto, "hasNext", {
  get: function() {
    var stack = this._stack
    if(stack.length === 0) {
      return false
    }
    if(stack[stack.length-1].right) {
      return true
    }
    for(var s=stack.length-1; s>0; --s) {
      if(stack[s-1].left === stack[s]) {
        return true
      }
    }
    return false
  }
})

//Update value
iproto.update = function(value) {
  var stack = this._stack
  if(stack.length === 0) {
    throw new Error("Can't update empty node!")
  }
  var cstack = new Array(stack.length)
  var n = stack[stack.length-1]
  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
  for(var i=stack.length-2; i>=0; --i) {
    n = stack[i]
    if(n.left === stack[i+1]) {
      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
    } else {
      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
    }
  }
  return new RedBlackTree(this.tree._compare, cstack[0])
}

//Moves iterator backward one element
iproto.prev = function() {
  var stack = this._stack
  if(stack.length === 0) {
    return
  }
  var n = stack[stack.length-1]
  if(n.left) {
    n = n.left
    while(n) {
      stack.push(n)
      n = n.right
    }
  } else {
    stack.pop()
    while(stack.length > 0 && stack[stack.length-1].left === n) {
      n = stack[stack.length-1]
      stack.pop()
    }
  }
}

//Checks if iterator is at start of tree
Object.defineProperty(iproto, "hasPrev", {
  get: function() {
    var stack = this._stack
    if(stack.length === 0) {
      return false
    }
    if(stack[stack.length-1].left) {
      return true
    }
    for(var s=stack.length-1; s>0; --s) {
      if(stack[s-1].right === stack[s]) {
        return true
      }
    }
    return false
  }
})

//Default comparison function
function defaultCompare(a, b) {
  if(a < b) {
    return -1
  }
  if(a > b) {
    return 1
  }
  return 0
}

//Build a tree
function createRBTree(compare) {
  return new RedBlackTree(compare || defaultCompare, null)
}
},{}],71:[function(require,module,exports){
// transliterated from the python snippet here:
// http://en.wikipedia.org/wiki/Lanczos_approximation

var g = 7;
var p = [
    0.99999999999980993,
    676.5203681218851,
    -1259.1392167224028,
    771.32342877765313,
    -176.61502916214059,
    12.507343278686905,
    -0.13857109526572012,
    9.9843695780195716e-6,
    1.5056327351493116e-7
];

var g_ln = 607/128;
var p_ln = [
    0.99999999999999709182,
    57.156235665862923517,
    -59.597960355475491248,
    14.136097974741747174,
    -0.49191381609762019978,
    0.33994649984811888699e-4,
    0.46523628927048575665e-4,
    -0.98374475304879564677e-4,
    0.15808870322491248884e-3,
    -0.21026444172410488319e-3,
    0.21743961811521264320e-3,
    -0.16431810653676389022e-3,
    0.84418223983852743293e-4,
    -0.26190838401581408670e-4,
    0.36899182659531622704e-5
];

// Spouge approximation (suitable for large arguments)
function lngamma(z) {

    if(z < 0) return Number('0/0');
    var x = p_ln[0];
    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
    var t = z + g_ln + 0.5;
    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
}

module.exports = function gamma (z) {
    if (z < 0.5) {
        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
    }
    else if(z > 100) return Math.exp(lngamma(z));
    else {
        z -= 1;
        var x = p[0];
        for (var i = 1; i < g + 2; i++) {
            x += p[i] / (z + i);
        }
        var t = z + g + 0.5;

        return Math.sqrt(2 * Math.PI)
            * Math.pow(t, z + 0.5)
            * Math.exp(-t)
            * x
        ;
    }
};

module.exports.log = lngamma;

},{}],72:[function(require,module,exports){
module.exports = getCanvasContext
function getCanvasContext (type, opts) {
  if (typeof type !== 'string') {
    throw new TypeError('must specify type string')
  }

  opts = opts || {}

  if (typeof document === 'undefined' && !opts.canvas) {
    return null // check for Node
  }

  var canvas = opts.canvas || document.createElement('canvas')
  if (typeof opts.width === 'number') {
    canvas.width = opts.width
  }
  if (typeof opts.height === 'number') {
    canvas.height = opts.height
  }

  var attribs = opts
  var gl
  try {
    var names = [ type ]
    // prefix GL contexts
    if (type.indexOf('webgl') === 0) {
      names.push('experimental-' + type)
    }

    for (var i = 0; i < names.length; i++) {
      gl = canvas.getContext(names[i], attribs)
      if (gl) return gl
    }
  } catch (e) {
    gl = null
  }
  return (gl || null) // ensure null on fail
}

},{}],73:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")
var ops = require("ndarray-ops")
var ndarray = require("ndarray")

var SUPPORTED_TYPES = [
  "uint8",
  "uint8_clamped",
  "uint16",
  "uint32",
  "int8",
  "int16",
  "int32",
  "float32" ]

function GLBuffer(gl, type, handle, length, usage) {
  this.gl = gl
  this.type = type
  this.handle = handle
  this.length = length
  this.usage = usage
}

var proto = GLBuffer.prototype

proto.bind = function() {
  this.gl.bindBuffer(this.type, this.handle)
}

proto.unbind = function() {
  this.gl.bindBuffer(this.type, null)
}

proto.dispose = function() {
  this.gl.deleteBuffer(this.handle)
}

function updateTypeArray(gl, type, len, usage, data, offset) {
  var dataLen = data.length * data.BYTES_PER_ELEMENT
  if(offset < 0) {
    gl.bufferData(type, data, usage)
    return dataLen
  }
  if(dataLen + offset > len) {
    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
  }
  gl.bufferSubData(type, offset, data)
  return len
}

function makeScratchTypeArray(array, dtype) {
  var res = pool.malloc(array.length, dtype)
  var n = array.length
  for(var i=0; i<n; ++i) {
    res[i] = array[i]
  }
  return res
}

function isPacked(shape, stride) {
  var n = 1
  for(var i=stride.length-1; i>=0; --i) {
    if(stride[i] !== n) {
      return false
    }
    n *= shape[i]
  }
  return true
}

proto.update = function(array, offset) {
  if(typeof offset !== "number") {
    offset = -1
  }
  this.bind()
  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
    var dtype = array.dtype
    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
      dtype = "float32"
    }
    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
      var ext = gl.getExtension('OES_element_index_uint')
      if(ext && dtype !== "uint16") {
        dtype = "uint32"
      } else {
        dtype = "uint16"
      }
    }
    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
      if(array.offset === 0 && array.data.length === array.shape[0]) {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
      } else {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
      }
    } else {
      var tmp = pool.malloc(array.size, dtype)
      var ndt = ndarray(tmp, array.shape)
      ops.assign(ndt, array)
      if(offset < 0) {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
      } else {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
      }
      pool.free(tmp)
    }
  } else if(Array.isArray(array)) { //Vanilla array
    var t
    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
      t = makeScratchTypeArray(array, "uint16")
    } else {
      t = makeScratchTypeArray(array, "float32")
    }
    if(offset < 0) {
      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
    } else {
      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
    }
    pool.free(t)
  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
  } else if(typeof array === "number" || array === undefined) { //Number/default
    if(offset >= 0) {
      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
    }
    array = array | 0
    if(array <= 0) {
      array = 1
    }
    this.gl.bufferData(this.type, array|0, this.usage)
    this.length = array
  } else { //Error, case should not happen
    throw new Error("gl-buffer: Invalid data type")
  }
}

function createBuffer(gl, data, type, usage) {
  type = type || gl.ARRAY_BUFFER
  usage = usage || gl.DYNAMIC_DRAW
  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
  }
  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
  }
  var handle = gl.createBuffer()
  var result = new GLBuffer(gl, type, handle, 0, usage)
  result.update(data)
  return result
}

module.exports = createBuffer

},{"ndarray":163,"ndarray-ops":162,"typedarray-pool":205}],74:[function(require,module,exports){
module.exports = {
  0: 'NONE',
  1: 'ONE',
  2: 'LINE_LOOP',
  3: 'LINE_STRIP',
  4: 'TRIANGLES',
  5: 'TRIANGLE_STRIP',
  6: 'TRIANGLE_FAN',
  256: 'DEPTH_BUFFER_BIT',
  512: 'NEVER',
  513: 'LESS',
  514: 'EQUAL',
  515: 'LEQUAL',
  516: 'GREATER',
  517: 'NOTEQUAL',
  518: 'GEQUAL',
  519: 'ALWAYS',
  768: 'SRC_COLOR',
  769: 'ONE_MINUS_SRC_COLOR',
  770: 'SRC_ALPHA',
  771: 'ONE_MINUS_SRC_ALPHA',
  772: 'DST_ALPHA',
  773: 'ONE_MINUS_DST_ALPHA',
  774: 'DST_COLOR',
  775: 'ONE_MINUS_DST_COLOR',
  776: 'SRC_ALPHA_SATURATE',
  1024: 'STENCIL_BUFFER_BIT',
  1028: 'FRONT',
  1029: 'BACK',
  1032: 'FRONT_AND_BACK',
  1280: 'INVALID_ENUM',
  1281: 'INVALID_VALUE',
  1282: 'INVALID_OPERATION',
  1285: 'OUT_OF_MEMORY',
  1286: 'INVALID_FRAMEBUFFER_OPERATION',
  2304: 'CW',
  2305: 'CCW',
  2849: 'LINE_WIDTH',
  2884: 'CULL_FACE',
  2885: 'CULL_FACE_MODE',
  2886: 'FRONT_FACE',
  2928: 'DEPTH_RANGE',
  2929: 'DEPTH_TEST',
  2930: 'DEPTH_WRITEMASK',
  2931: 'DEPTH_CLEAR_VALUE',
  2932: 'DEPTH_FUNC',
  2960: 'STENCIL_TEST',
  2961: 'STENCIL_CLEAR_VALUE',
  2962: 'STENCIL_FUNC',
  2963: 'STENCIL_VALUE_MASK',
  2964: 'STENCIL_FAIL',
  2965: 'STENCIL_PASS_DEPTH_FAIL',
  2966: 'STENCIL_PASS_DEPTH_PASS',
  2967: 'STENCIL_REF',
  2968: 'STENCIL_WRITEMASK',
  2978: 'VIEWPORT',
  3024: 'DITHER',
  3042: 'BLEND',
  3088: 'SCISSOR_BOX',
  3089: 'SCISSOR_TEST',
  3106: 'COLOR_CLEAR_VALUE',
  3107: 'COLOR_WRITEMASK',
  3317: 'UNPACK_ALIGNMENT',
  3333: 'PACK_ALIGNMENT',
  3379: 'MAX_TEXTURE_SIZE',
  3386: 'MAX_VIEWPORT_DIMS',
  3408: 'SUBPIXEL_BITS',
  3410: 'RED_BITS',
  3411: 'GREEN_BITS',
  3412: 'BLUE_BITS',
  3413: 'ALPHA_BITS',
  3414: 'DEPTH_BITS',
  3415: 'STENCIL_BITS',
  3553: 'TEXTURE_2D',
  4352: 'DONT_CARE',
  4353: 'FASTEST',
  4354: 'NICEST',
  5120: 'BYTE',
  5121: 'UNSIGNED_BYTE',
  5122: 'SHORT',
  5123: 'UNSIGNED_SHORT',
  5124: 'INT',
  5125: 'UNSIGNED_INT',
  5126: 'FLOAT',
  5386: 'INVERT',
  5890: 'TEXTURE',
  6401: 'STENCIL_INDEX',
  6402: 'DEPTH_COMPONENT',
  6406: 'ALPHA',
  6407: 'RGB',
  6408: 'RGBA',
  6409: 'LUMINANCE',
  6410: 'LUMINANCE_ALPHA',
  7680: 'KEEP',
  7681: 'REPLACE',
  7682: 'INCR',
  7683: 'DECR',
  7936: 'VENDOR',
  7937: 'RENDERER',
  7938: 'VERSION',
  9728: 'NEAREST',
  9729: 'LINEAR',
  9984: 'NEAREST_MIPMAP_NEAREST',
  9985: 'LINEAR_MIPMAP_NEAREST',
  9986: 'NEAREST_MIPMAP_LINEAR',
  9987: 'LINEAR_MIPMAP_LINEAR',
  10240: 'TEXTURE_MAG_FILTER',
  10241: 'TEXTURE_MIN_FILTER',
  10242: 'TEXTURE_WRAP_S',
  10243: 'TEXTURE_WRAP_T',
  10497: 'REPEAT',
  10752: 'POLYGON_OFFSET_UNITS',
  16384: 'COLOR_BUFFER_BIT',
  32769: 'CONSTANT_COLOR',
  32770: 'ONE_MINUS_CONSTANT_COLOR',
  32771: 'CONSTANT_ALPHA',
  32772: 'ONE_MINUS_CONSTANT_ALPHA',
  32773: 'BLEND_COLOR',
  32774: 'FUNC_ADD',
  32777: 'BLEND_EQUATION_RGB',
  32778: 'FUNC_SUBTRACT',
  32779: 'FUNC_REVERSE_SUBTRACT',
  32819: 'UNSIGNED_SHORT_4_4_4_4',
  32820: 'UNSIGNED_SHORT_5_5_5_1',
  32823: 'POLYGON_OFFSET_FILL',
  32824: 'POLYGON_OFFSET_FACTOR',
  32854: 'RGBA4',
  32855: 'RGB5_A1',
  32873: 'TEXTURE_BINDING_2D',
  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
  32928: 'SAMPLE_COVERAGE',
  32936: 'SAMPLE_BUFFERS',
  32937: 'SAMPLES',
  32938: 'SAMPLE_COVERAGE_VALUE',
  32939: 'SAMPLE_COVERAGE_INVERT',
  32968: 'BLEND_DST_RGB',
  32969: 'BLEND_SRC_RGB',
  32970: 'BLEND_DST_ALPHA',
  32971: 'BLEND_SRC_ALPHA',
  33071: 'CLAMP_TO_EDGE',
  33170: 'GENERATE_MIPMAP_HINT',
  33189: 'DEPTH_COMPONENT16',
  33306: 'DEPTH_STENCIL_ATTACHMENT',
  33635: 'UNSIGNED_SHORT_5_6_5',
  33648: 'MIRRORED_REPEAT',
  33901: 'ALIASED_POINT_SIZE_RANGE',
  33902: 'ALIASED_LINE_WIDTH_RANGE',
  33984: 'TEXTURE0',
  33985: 'TEXTURE1',
  33986: 'TEXTURE2',
  33987: 'TEXTURE3',
  33988: 'TEXTURE4',
  33989: 'TEXTURE5',
  33990: 'TEXTURE6',
  33991: 'TEXTURE7',
  33992: 'TEXTURE8',
  33993: 'TEXTURE9',
  33994: 'TEXTURE10',
  33995: 'TEXTURE11',
  33996: 'TEXTURE12',
  33997: 'TEXTURE13',
  33998: 'TEXTURE14',
  33999: 'TEXTURE15',
  34000: 'TEXTURE16',
  34001: 'TEXTURE17',
  34002: 'TEXTURE18',
  34003: 'TEXTURE19',
  34004: 'TEXTURE20',
  34005: 'TEXTURE21',
  34006: 'TEXTURE22',
  34007: 'TEXTURE23',
  34008: 'TEXTURE24',
  34009: 'TEXTURE25',
  34010: 'TEXTURE26',
  34011: 'TEXTURE27',
  34012: 'TEXTURE28',
  34013: 'TEXTURE29',
  34014: 'TEXTURE30',
  34015: 'TEXTURE31',
  34016: 'ACTIVE_TEXTURE',
  34024: 'MAX_RENDERBUFFER_SIZE',
  34041: 'DEPTH_STENCIL',
  34055: 'INCR_WRAP',
  34056: 'DECR_WRAP',
  34067: 'TEXTURE_CUBE_MAP',
  34068: 'TEXTURE_BINDING_CUBE_MAP',
  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
  34342: 'CURRENT_VERTEX_ATTRIB',
  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
  34467: 'COMPRESSED_TEXTURE_FORMATS',
  34660: 'BUFFER_SIZE',
  34661: 'BUFFER_USAGE',
  34816: 'STENCIL_BACK_FUNC',
  34817: 'STENCIL_BACK_FAIL',
  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
  34877: 'BLEND_EQUATION_ALPHA',
  34921: 'MAX_VERTEX_ATTRIBS',
  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
  34930: 'MAX_TEXTURE_IMAGE_UNITS',
  34962: 'ARRAY_BUFFER',
  34963: 'ELEMENT_ARRAY_BUFFER',
  34964: 'ARRAY_BUFFER_BINDING',
  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
  35040: 'STREAM_DRAW',
  35044: 'STATIC_DRAW',
  35048: 'DYNAMIC_DRAW',
  35632: 'FRAGMENT_SHADER',
  35633: 'VERTEX_SHADER',
  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
  35663: 'SHADER_TYPE',
  35664: 'FLOAT_VEC2',
  35665: 'FLOAT_VEC3',
  35666: 'FLOAT_VEC4',
  35667: 'INT_VEC2',
  35668: 'INT_VEC3',
  35669: 'INT_VEC4',
  35670: 'BOOL',
  35671: 'BOOL_VEC2',
  35672: 'BOOL_VEC3',
  35673: 'BOOL_VEC4',
  35674: 'FLOAT_MAT2',
  35675: 'FLOAT_MAT3',
  35676: 'FLOAT_MAT4',
  35678: 'SAMPLER_2D',
  35680: 'SAMPLER_CUBE',
  35712: 'DELETE_STATUS',
  35713: 'COMPILE_STATUS',
  35714: 'LINK_STATUS',
  35715: 'VALIDATE_STATUS',
  35716: 'INFO_LOG_LENGTH',
  35717: 'ATTACHED_SHADERS',
  35718: 'ACTIVE_UNIFORMS',
  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
  35720: 'SHADER_SOURCE_LENGTH',
  35721: 'ACTIVE_ATTRIBUTES',
  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
  35724: 'SHADING_LANGUAGE_VERSION',
  35725: 'CURRENT_PROGRAM',
  36003: 'STENCIL_BACK_REF',
  36004: 'STENCIL_BACK_VALUE_MASK',
  36005: 'STENCIL_BACK_WRITEMASK',
  36006: 'FRAMEBUFFER_BINDING',
  36007: 'RENDERBUFFER_BINDING',
  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
  36053: 'FRAMEBUFFER_COMPLETE',
  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
  36061: 'FRAMEBUFFER_UNSUPPORTED',
  36064: 'COLOR_ATTACHMENT0',
  36096: 'DEPTH_ATTACHMENT',
  36128: 'STENCIL_ATTACHMENT',
  36160: 'FRAMEBUFFER',
  36161: 'RENDERBUFFER',
  36162: 'RENDERBUFFER_WIDTH',
  36163: 'RENDERBUFFER_HEIGHT',
  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
  36168: 'STENCIL_INDEX8',
  36176: 'RENDERBUFFER_RED_SIZE',
  36177: 'RENDERBUFFER_GREEN_SIZE',
  36178: 'RENDERBUFFER_BLUE_SIZE',
  36179: 'RENDERBUFFER_ALPHA_SIZE',
  36180: 'RENDERBUFFER_DEPTH_SIZE',
  36181: 'RENDERBUFFER_STENCIL_SIZE',
  36194: 'RGB565',
  36336: 'LOW_FLOAT',
  36337: 'MEDIUM_FLOAT',
  36338: 'HIGH_FLOAT',
  36339: 'LOW_INT',
  36340: 'MEDIUM_INT',
  36341: 'HIGH_INT',
  36346: 'SHADER_COMPILER',
  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
  36348: 'MAX_VARYING_VECTORS',
  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
  37440: 'UNPACK_FLIP_Y_WEBGL',
  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
  37442: 'CONTEXT_LOST_WEBGL',
  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
  37444: 'BROWSER_DEFAULT_WEBGL'
}

},{}],75:[function(require,module,exports){
var gl10 = require('./1.0/numbers')

module.exports = function lookupConstant (number) {
  return gl10[number]
}

},{"./1.0/numbers":74}],76:[function(require,module,exports){
'use strict'

module.exports = createContour2D

var iota = require('iota-array')
var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var ndarray = require('ndarray')
var surfaceNets = require('surface-nets')
var cdt2d = require('cdt2d')
var cleanPSLG = require('clean-pslg')
var bsearch = require('binary-search-bounds')

var shaders = require('./lib/shaders')

function GLContour2D (
  plot,
  shader,
  fillShader,
  positionBuffer,
  colorBuffer,
  idBuffer,
  fillPositionBuffer,
  fillColorBuffer) {
  this.plot = plot
  this.shader = shader
  this.fillShader = fillShader
  this.positionBuffer = positionBuffer
  this.colorBuffer = colorBuffer
  this.idBuffer = idBuffer
  this.fillPositionBuffer = fillPositionBuffer
  this.fillColorBuffer = fillColorBuffer
  this.fillVerts = 0
  this.shape = [0, 0]
  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
  this.numVertices = 0
  this.lineWidth = 1
}

var proto = GLContour2D.prototype

var WEIGHTS = [
  1, 0,
  0, 0,
  0, 1,
  1, 0,
  1, 1,
  0, 1
]

proto.draw = (function () {
  var MATRIX = [
    1, 0, 0,
    0, 1, 0,
    0, 0, 1
  ]

  var SCREEN_SHAPE = [0, 0]

  return function () {
    var plot = this.plot
    var shader = this.shader
    var fillShader = this.fillShader
    var bounds = this.bounds
    var numVertices = this.numVertices
    var fillVerts = this.fillVerts

    var uniforms, attributes

    var gl = plot.gl
    var viewBox = plot.viewBox
    var dataBox = plot.dataBox

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    MATRIX[0] = 2.0 * boundX / dataX
    MATRIX[4] = 2.0 * boundY / dataY
    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0

    SCREEN_SHAPE[0] = viewBox[2] - viewBox[0]
    SCREEN_SHAPE[1] = viewBox[3] - viewBox[1]

    if (fillVerts > 0) {
      fillShader.bind()

      uniforms = fillShader.uniforms
      uniforms.viewTransform = MATRIX
      uniforms.screenShape = SCREEN_SHAPE

      attributes = shader.attributes
      this.fillPositionBuffer.bind()
      attributes.position.pointer()

      this.fillColorBuffer.bind()
      attributes.color.pointer(gl.UNSIGNED_BYTE, true)

      gl.drawArrays(gl.TRIANGLES, 0, fillVerts)
    }

    if (numVertices > 0) {
      shader.bind()

      var lineWidth = this.lineWidth * plot.pixelRatio

      uniforms = shader.uniforms
      uniforms.viewTransform = MATRIX
      uniforms.screenShape = SCREEN_SHAPE
      uniforms.lineWidth = lineWidth
      uniforms.pointSize = 1000

      attributes = shader.attributes

      // Draw lines
      this.positionBuffer.bind()
      attributes.position.pointer(gl.FLOAT, false, 16, 0)
      attributes.tangent.pointer(gl.FLOAT, false, 16, 8)

      this.colorBuffer.bind()
      attributes.color.pointer(gl.UNSIGNED_BYTE, true)

      gl.drawArrays(gl.TRIANGLES, 0, numVertices)

      // Draw end caps
      uniforms.lineWidth = 0
      uniforms.pointSize = lineWidth

      this.positionBuffer.bind()
      attributes.position.pointer(gl.FLOAT, false, 16 * 3, 0)
      attributes.tangent.pointer(gl.FLOAT, false, 16 * 3, 8)

      this.colorBuffer.bind()
      attributes.color.pointer(gl.UNSIGNED_BYTE, true, 4 * 3, 0)

      gl.drawArrays(gl.POINTS, 0, numVertices / 3)
    }
  }
})()

proto.drawPick = (function () {
  return function (pickOffset) {
    return pickOffset
  }
})()

proto.pick = function (x, y, value) {
  return null
}

function interpolate (array, point) {
  var idx = Math.floor(point)
  if (idx < 0) {
    return array[0]
  } else if (idx >= array.length - 1) {
    return array[array.length - 1]
  }
  var t = point - idx
  return (1.0 - t) * array[idx] + t * array[idx + 1]
}

proto.update = function (options) {
  options = options || {}

  var shape = options.shape || [0, 0]

  var x = options.x || iota(shape[0])
  var y = options.y || iota(shape[1])
  var z = options.z || new Float32Array(shape[0] * shape[1])

  var levels = options.levels || []
  var levelColors = options.levelColors || []

  var bounds = this.bounds
  var lox = bounds[0] = x[0]
  var loy = bounds[1] = y[0]
  var hix = bounds[2] = x[x.length - 1]
  var hiy = bounds[3] = y[y.length - 1]

  if (lox === hix) {
    bounds[2] += 1
    hix += 1
  }
  if (loy === hiy) {
    bounds[3] += 1
    hiy += 1
  }

  var xs = 1.0 / (hix - lox)
  var ys = 1.0 / (hiy - loy)

  this.lineWidth = options.lineWidth || 1

  var zarray = ndarray(z, shape)

  var positions = []
  var colors = []
  var ids = []

  var fillCells = []
  var fillPositions = [
    [0, 0],
    [shape[0] - 1, 0],
    [0, shape[1] - 1],
    [shape[0] - 1, shape[1] - 1]
  ]

  function intersect (level, x, a, b) {
    var d = (b - a)
    if (Math.abs(d) < 1e-6) {
      return x
    }
    return Math.floor(x) + Math.max(0.001, Math.min(0.999, (level - a) / d))
  }

  for (var i = 0; i < levels.length; ++i) {
    var level = levels[i]
    if (i > 0 && level === levels[i - 1]) {
      continue
    }
    var contour = surfaceNets(zarray, level)

    var c_r = (255 * levelColors[4 * i]) | 0
    var c_g = (255 * levelColors[4 * i + 1]) | 0
    var c_b = (255 * levelColors[4 * i + 2]) | 0
    var c_a = (255 * levelColors[4 * i + 3]) | 0

    var c_cells = contour.cells
    var c_positions = contour.positions

    // Fix boundaries
    var in_degree = Array(c_positions.length)
    for (var j = 0; j < in_degree.length; ++j) {
      in_degree[j] = 0
    }
    for (j = 0; j < c_cells.length; ++j) {
      var edge = c_cells[j]
      in_degree[edge[0]] += 1
      in_degree[edge[1]] += 1
    }

    for (j = 0; j < in_degree.length; ++j) {
      var deg = in_degree[j]
      if (deg === 0) {
        continue
      }
      var pp = c_positions[j]
      in_degree[j] = fillPositions.length
      fillPositions.push(pp)
      if (deg > 1) {
        continue
      }
      var ppx = pp[0]
      var ppy = pp[1]
      var z00 = zarray.get(Math.floor(ppx), Math.floor(ppy))
      var z01 = zarray.get(Math.floor(ppx), Math.ceil(ppy))
      var z10 = zarray.get(Math.ceil(ppx), Math.floor(ppy))
      var z11 = zarray.get(Math.ceil(ppx), Math.ceil(ppy))
      var intercept
      if (Math.floor(pp[0]) === 0 &&
          ((z00 <= level) !== (z01 < level))) {
        intercept = [0, intersect(level, pp[1], z00, z01)]
      } else if (Math.ceil(pp[0]) === shape[0] - 1 &&
          ((z10 <= level) !== (z11 < level))) {
        intercept = [shape[0] - 1, intersect(level, pp[1], z10, z11)]
      } else if (Math.floor(pp[1]) === 0 &&
          ((z00 <= level) !== (z10 < level))) {
        intercept = [intersect(level, pp[0], z00, z10), 0]
      } else if (Math.ceil(pp[1]) === shape[1] - 1 &&
          ((z01 <= level) !== (z11 < level))) {
        intercept = [intersect(level, pp[0], z01, z11), shape[1] - 1]
      }
      if (intercept) {
        c_cells.push([j, c_positions.length])
        in_degree.push(fillPositions.length)
        c_positions.push(intercept)
      }
    }

    for (j = 0; j < c_cells.length; ++j) {
      var e = c_cells[j]
      var a = c_positions[e[0]]
      var b = c_positions[e[1]]

      fillCells.push([in_degree[e[0]], in_degree[e[1]]])

      var pointId = Math.round(a[0]) + shape[0] * Math.round(a[1])

      var ax = interpolate(x, a[0])
      var ay = interpolate(y, a[1])
      var bx = interpolate(x, b[0])
      var by = interpolate(y, b[1])

      ax = xs * (ax - lox)
      ay = ys * (ay - loy)
      bx = xs * (bx - lox)
      by = ys * (by - loy)

      var dx = ax - bx
      var dy = ay - by

      for (var k = 0; k < WEIGHTS.length; k += 2) {
        var wx = WEIGHTS[k]
        var wix = 1.0 - wx
        var wy = 2.0 * WEIGHTS[k + 1] - 1.0

        positions.push(
          wix * ax + wx * bx, wix * ay + wx * by,
          wy * dx, wy * dy)
        colors.push(c_r, c_g, c_b, c_a)
        ids.push(pointId)
      }
    }
  }

  this.positionBuffer.update(new Float32Array(positions))
  this.colorBuffer.update(new Uint8Array(colors))
  this.idBuffer.update(new Uint32Array(ids))
  this.numVertices = ids.length

  var fillColors = options.fillColors
  var fillCellColors = []
  var fillCellPositions = []
  var fillVerts = 0

  if (fillColors) {
    cleanPSLG(fillPositions, fillCells)
    var fillMesh = cdt2d(fillPositions, fillCells, {
      delaunay: false
    })
    for (i = 0; i < fillMesh.length; ++i) {
      var cell = fillMesh[i]
      var cx = 0
      var cy = 0

      for (j = 0; j < 3; ++j) {
        var p = fillPositions[cell[j]]
        var px = interpolate(x, p[0])
        var py = interpolate(y, p[1])
        cx += p[0]
        cy += p[1]
        fillCellPositions.push(
          xs * (px - lox),
          ys * (py - loy))
      }

      // Compute centroid of triangle
      cx /= 3
      cy /= 3

      // Sample height field at triangle centroid
      var cxi = Math.floor(cx)
      var cyi = Math.floor(cy)
      var cxf = cx - cxi
      var cyf = cy - cyi

      var c00 = zarray.get(cxi, cyi)
      var c01 = zarray.get(cxi, cyi + 1)
      var c10 = zarray.get(cxi + 1, cyi)
      var c11 = zarray.get(cxi + 1, cyi + 1)

      var zlevel =
        (1 - cyf) * ((1 - cxf) * c00 + cxf * c10) +
        cyf * ((1 - cxf) * c01 + cxf * c11)

      // Color triangle using centroid data
      var l = bsearch.le(levels, zlevel) + 1
      var cr = (255 * fillColors[4 * l + 0]) | 0
      var cg = (255 * fillColors[4 * l + 1]) | 0
      var cb = (255 * fillColors[4 * l + 2]) | 0
      var ca = (255 * fillColors[4 * l + 3]) | 0

      fillCellColors.push(
        cr, cg, cb, ca,
        cr, cg, cb, ca,
        cr, cg, cb, ca)

      fillVerts += 3
    }

    this.fillPositionBuffer.update(new Float32Array(fillCellPositions))
    this.fillColorBuffer.update(new Uint8Array(fillCellColors))

    this.fillVerts = fillVerts
  }
}

proto.dispose = function () {
  this.plot.removeObject(this)
}

function createContour2D (plot, options) {
  var gl = plot.gl

  var shader = createShader(gl, shaders.vertex, shaders.fragment)
  var fillShader = createShader(gl, shaders.fillVertex, shaders.fragment)

  var positionBuffer = createBuffer(gl)
  var colorBuffer = createBuffer(gl)
  var idBuffer = createBuffer(gl)

  var fillPositionBuffer = createBuffer(gl)
  var fillColorBuffer = createBuffer(gl)

  var contours = new GLContour2D(
    plot,
    shader,
    fillShader,
    positionBuffer,
    colorBuffer,
    idBuffer,
    fillPositionBuffer,
    fillColorBuffer)

  contours.update(options)
  plot.addObject(contours)

  return contours
}

},{"./lib/shaders":77,"binary-search-bounds":78,"cdt2d":42,"clean-pslg":49,"gl-buffer":73,"gl-shader":132,"iota-array":153,"ndarray":163,"surface-nets":197}],77:[function(require,module,exports){
'use strict'



module.exports = {
  fragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
  vertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec2 tangent;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\nuniform vec2 screenShape;\nuniform float lineWidth;\nuniform float pointSize;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  vec2 vTangent = normalize(viewTransform * vec3(tangent, 0)).xy;\n  vec2 offset = vec2(vTangent.y, -vTangent.x) / screenShape;\n\n  gl_Position = vec4(\n    vPosition.xy + offset * lineWidth * vPosition.z,\n    0,\n    vPosition.z);\n\n  gl_PointSize = pointSize;\n}\n",
  fillVertex: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\n\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  fragColor = color;\n  vec3 vPosition = viewTransform * vec3(position, 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
}

},{}],78:[function(require,module,exports){
arguments[4][47][0].apply(exports,arguments)
},{"dup":47}],79:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var pool = require('typedarray-pool')
var shaders = require('./lib/shaders')

module.exports = createError2D

var WEIGHTS = [
  // x-error bar
  [1, 0, 0, 1, 0, 0],
  [1, 0, 0, -1, 0, 0],
  [-1, 0, 0, -1, 0, 0],

  [-1, 0, 0, -1, 0, 0],
  [-1, 0, 0, 1, 0, 0],
  [1, 0, 0, 1, 0, 0],

  // x-error right cap
  [1, 0, -1, 0, 0, 1],
  [1, 0, -1, 0, 0, -1],
  [1, 0, 1, 0, 0, -1],

  [1, 0, 1, 0, 0, -1],
  [1, 0, 1, 0, 0, 1],
  [1, 0, -1, 0, 0, 1],

  // x-error left cap
  [-1, 0, -1, 0, 0, 1],
  [-1, 0, -1, 0, 0, -1],
  [-1, 0, 1, 0, 0, -1],

  [-1, 0, 1, 0, 0, -1],
  [-1, 0, 1, 0, 0, 1],
  [-1, 0, -1, 0, 0, 1],

  // y-error bar
  [0, 1, 1, 0, 0, 0],
  [0, 1, -1, 0, 0, 0],
  [0, -1, -1, 0, 0, 0],

  [0, -1, -1, 0, 0, 0],
  [0, 1, 1, 0, 0, 0],
  [0, -1, 1, 0, 0, 0],

  // y-error top cap
  [0, 1, 0, -1, 1, 0],
  [0, 1, 0, -1, -1, 0],
  [0, 1, 0, 1, -1, 0],

  [0, 1, 0, 1, 1, 0],
  [0, 1, 0, -1, 1, 0],
  [0, 1, 0, 1, -1, 0],

  // y-error bottom cap
  [0, -1, 0, -1, 1, 0],
  [0, -1, 0, -1, -1, 0],
  [0, -1, 0, 1, -1, 0],

  [0, -1, 0, 1, 1, 0],
  [0, -1, 0, -1, 1, 0],
  [0, -1, 0, 1, -1, 0]
]

function GLError2D (plot, shader, bufferHi, bufferLo) {
  this.plot = plot

  this.shader = shader
  this.bufferHi = bufferHi
  this.bufferLo = bufferLo

  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]

  this.numPoints = 0

  this.color = [0, 0, 0, 1]
}

var proto = GLError2D.prototype

proto.draw = (function () {
  var SCALE_HI = new Float32Array([0, 0])
  var SCALE_LO = new Float32Array([0, 0])
  var TRANSLATE_HI = new Float32Array([0, 0])
  var TRANSLATE_LO = new Float32Array([0, 0])

  var PIXEL_SCALE = [1, 1]

  return function () {
    var plot = this.plot
    var shader = this.shader
    var bounds = this.bounds
    var numPoints = this.numPoints

    if (!numPoints) {
      return
    }

    var gl = plot.gl
    var dataBox = plot.dataBox
    var viewBox = plot.viewBox
    var pixelRatio = plot.pixelRatio

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    var scaleX = 2 * boundX / dataX
    var scaleY = 2 * boundY / dataY
    var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
    var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

    SCALE_HI[0] = scaleX
    SCALE_HI[1] = scaleY
    SCALE_LO[0] = scaleX - SCALE_HI[0]
    SCALE_LO[1] = scaleY - SCALE_HI[1]
    TRANSLATE_HI[0] = translateX
    TRANSLATE_HI[1] = translateY
    TRANSLATE_LO[0] = translateX - TRANSLATE_HI[0]
    TRANSLATE_LO[1] = translateY - TRANSLATE_HI[1]

    var screenX = viewBox[2] - viewBox[0]
    var screenY = viewBox[3] - viewBox[1]

    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY

    shader.bind()

    shader.uniforms.scaleHi = SCALE_HI
    shader.uniforms.scaleLo = SCALE_LO
    shader.uniforms.translateHi = TRANSLATE_HI
    shader.uniforms.translateLo = TRANSLATE_LO
    shader.uniforms.pixelScale = PIXEL_SCALE
    shader.uniforms.color = this.color

    this.bufferLo.bind()
    shader.attributes.positionLo.pointer(gl.FLOAT, false, 16, 0)

    this.bufferHi.bind()
    shader.attributes.positionHi.pointer(gl.FLOAT, false, 16, 0)

    shader.attributes.pixelOffset.pointer(gl.FLOAT, false, 16, 8)

    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
  }
})()

proto.drawPick = function (offset) { return offset }
proto.pick = function () {
  return null
}

proto.update = function (options) {
  options = options || {}

  var i, x, y

  var positions = options.positions || []
  var errors = options.errors || []

  var lineWidth = 1
  if ('lineWidth' in options) {
    lineWidth = +options.lineWidth
  }

  var capSize = 5
  if ('capSize' in options) {
    capSize = +options.capSize
  }

  this.color = (options.color || [0, 0, 0, 1]).slice()

  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]

  var numPoints = this.numPoints = positions.length >> 1
  for (i = 0; i < numPoints; ++i) {
    x = positions[i * 2]
    y = positions[i * 2 + 1]

    bounds[0] = Math.min(x, bounds[0])
    bounds[1] = Math.min(y, bounds[1])
    bounds[2] = Math.max(x, bounds[2])
    bounds[3] = Math.max(y, bounds[3])
  }
  if (bounds[2] === bounds[0]) {
    bounds[2] += 1
  }
  if (bounds[3] === bounds[1]) {
    bounds[3] += 1
  }
  var sx = 1.0 / (bounds[2] - bounds[0])
  var sy = 1.0 / (bounds[3] - bounds[1])
  var tx = bounds[0]
  var ty = bounds[1]

  var bufferData = pool.mallocFloat64(numPoints * WEIGHTS.length * 4)
  var bufferDataHi = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
  var bufferDataLo = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
  var ptr = 0
  for (i = 0; i < numPoints; ++i) {
    x = positions[2 * i]
    y = positions[2 * i + 1]
    var ex0 = errors[4 * i]
    var ex1 = errors[4 * i + 1]
    var ey0 = errors[4 * i + 2]
    var ey1 = errors[4 * i + 3]

    for (var j = 0; j < WEIGHTS.length; ++j) {
      var w = WEIGHTS[j]

      var dx = w[0]
      var dy = w[1]

      if (dx < 0) {
        dx *= ex0
      } else if (dx > 0) {
        dx *= ex1
      }

      if (dy < 0) {
        dy *= ey0
      } else if (dy > 0) {
        dy *= ey1
      }

      bufferData[ptr++] = sx * ((x - tx) + dx)
      bufferData[ptr++] = sy * ((y - ty) + dy)
      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
    }
  }
  for(i = 0; i < bufferData.length; i++) {
    bufferDataHi[i] = bufferData[i]
    bufferDataLo[i] = bufferData[i] - bufferDataHi[i]
  }
  this.bufferHi.update(bufferDataHi)
  this.bufferLo.update(bufferDataLo)
  pool.free(bufferData)
}

proto.dispose = function () {
  this.plot.removeObject(this)
  this.shader.dispose()
  this.bufferHi.dispose()
  this.bufferLo.dispose()
}

function createError2D (plot, options) {
  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
  var bufferHi = createBuffer(plot.gl)
  var bufferLo = createBuffer(plot.gl)

  var errorBars = new GLError2D(plot, shader, bufferHi, bufferLo)

  errorBars.update(options)

  plot.addObject(errorBars)

  return errorBars
}

},{"./lib/shaders":80,"gl-buffer":73,"gl-shader":132,"typedarray-pool":205}],80:[function(require,module,exports){


module.exports = {
  vertex: "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi;\nattribute vec2 positionLo;\nattribute vec2 pixelOffset;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo, pixelScale;\n\nvec2 project(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\nvoid main() {\n  vec3 scrPosition = vec3(\n         project(scaleHi, translateHi, scaleLo, translateLo, positionHi, positionLo),\n         1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
}

},{}],81:[function(require,module,exports){
'use strict'

var createTexture = require('gl-texture2d')

module.exports = createFBO

var colorAttachmentArrays = null
var FRAMEBUFFER_UNSUPPORTED
var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT

function saveFBOState(gl) {
  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
  return [fbo, rbo, tex]
}

function restoreFBOState(gl, data) {
  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
  gl.bindTexture(gl.TEXTURE_2D, data[2])
}

function lazyInitColorAttachments(gl, ext) {
  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
  colorAttachmentArrays = new Array(maxColorAttachments + 1)
  for(var i=0; i<=maxColorAttachments; ++i) {
    var x = new Array(maxColorAttachments)
    for(var j=0; j<i; ++j) {
      x[j] = gl.COLOR_ATTACHMENT0 + j
    }
    for(var j=i; j<maxColorAttachments; ++j) {
      x[j] = gl.NONE
    }
    colorAttachmentArrays[i] = x
  }
}

//Throw an appropriate error
function throwFBOError(status) {
  switch(status){
    case FRAMEBUFFER_UNSUPPORTED:
      throw new Error('gl-fbo: Framebuffer unsupported')
    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
      throw new Error('gl-fbo: Framebuffer incomplete attachment')
    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
    default:
      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
  }
}

//Initialize a texture object
function initTexture(gl, width, height, type, format, attachment) {
  if(!type) {
    return null
  }
  var result = createTexture(gl, width, height, format, type)
  result.magFilter = gl.NEAREST
  result.minFilter = gl.NEAREST
  result.mipSamples = 1
  result.bind()
  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
  return result
}

//Initialize a render buffer object
function initRenderBuffer(gl, width, height, component, attachment) {
  var result = gl.createRenderbuffer()
  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
  return result
}

//Rebuild the frame buffer
function rebuildFBO(fbo) {

  //Save FBO state
  var state = saveFBOState(fbo.gl)

  var gl = fbo.gl
  var handle = fbo.handle = gl.createFramebuffer()
  var width = fbo._shape[0]
  var height = fbo._shape[1]
  var numColors = fbo.color.length
  var ext = fbo._ext
  var useStencil = fbo._useStencil
  var useDepth = fbo._useDepth
  var colorType = fbo._colorType

  //Bind the fbo
  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)

  //Allocate color buffers
  for(var i=0; i<numColors; ++i) {
    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
  }
  if(numColors === 0) {
    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
    if(ext) {
      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
    }
  } else if(numColors > 1) {
    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
  }

  //Allocate depth/stencil buffers
  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
  if(WEBGL_depth_texture) {
    if(useStencil) {
      fbo.depth = initTexture(gl, width, height,
                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
                          gl.DEPTH_STENCIL,
                          gl.DEPTH_STENCIL_ATTACHMENT)
    } else if(useDepth) {
      fbo.depth = initTexture(gl, width, height,
                          gl.UNSIGNED_SHORT,
                          gl.DEPTH_COMPONENT,
                          gl.DEPTH_ATTACHMENT)
    }
  } else {
    if(useDepth && useStencil) {
      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
    } else if(useDepth) {
      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
    } else if(useStencil) {
      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
    }
  }

  //Check frame buffer state
  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
  if(status !== gl.FRAMEBUFFER_COMPLETE) {

    //Release all partially allocated resources
    fbo._destroyed = true

    //Release all resources
    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
    gl.deleteFramebuffer(fbo.handle)
    fbo.handle = null
    if(fbo.depth) {
      fbo.depth.dispose()
      fbo.depth = null
    }
    if(fbo._depth_rb) {
      gl.deleteRenderbuffer(fbo._depth_rb)
      fbo._depth_rb = null
    }
    for(var i=0; i<fbo.color.length; ++i) {
      fbo.color[i].dispose()
      fbo.color[i] = null
    }
    if(fbo._color_rb) {
      gl.deleteRenderbuffer(fbo._color_rb)
      fbo._color_rb = null
    }

    restoreFBOState(gl, state)

    //Throw the frame buffer error
    throwFBOError(status)
  }

  //Everything ok, let's get on with life
  restoreFBOState(gl, state)
}

function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {

  //Handle and set properties
  this.gl = gl
  this._shape = [width|0, height|0]
  this._destroyed = false
  this._ext = ext

  //Allocate buffers
  this.color = new Array(numColors)
  for(var i=0; i<numColors; ++i) {
    this.color[i] = null
  }
  this._color_rb = null
  this.depth = null
  this._depth_rb = null

  //Save depth and stencil flags
  this._colorType = colorType
  this._useDepth = useDepth
  this._useStencil = useStencil

  //Shape vector for resizing
  var parent = this
  var shapeVector = [width|0, height|0]
  Object.defineProperties(shapeVector, {
    0: {
      get: function() {
        return parent._shape[0]
      },
      set: function(w) {
        return parent.width = w
      }
    },
    1: {
      get: function() {
        return parent._shape[1]
      },
      set: function(h) {
        return parent.height = h
      }
    }
  })
  this._shapeVector = shapeVector

  //Initialize all attachments
  rebuildFBO(this)
}

var proto = Framebuffer.prototype

function reshapeFBO(fbo, w, h) {
  //If fbo is invalid, just skip this
  if(fbo._destroyed) {
    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
  }

  //Don't resize if no change in shape
  if( (fbo._shape[0] === w) &&
      (fbo._shape[1] === h) ) {
    return
  }

  var gl = fbo.gl

  //Check parameter ranges
  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
  if( w < 0 || w > maxFBOSize ||
      h < 0 || h > maxFBOSize) {
    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
  }

  //Update shape
  fbo._shape[0] = w
  fbo._shape[1] = h

  //Save framebuffer state
  var state = saveFBOState(gl)

  //Resize framebuffer attachments
  for(var i=0; i<fbo.color.length; ++i) {
    fbo.color[i].shape = fbo._shape
  }
  if(fbo._color_rb) {
    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
  }
  if(fbo.depth) {
    fbo.depth.shape = fbo._shape
  }
  if(fbo._depth_rb) {
    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
    if(fbo._useDepth && fbo._useStencil) {
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
    } else if(fbo._useDepth) {
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
    } else if(fbo._useStencil) {
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
    }
  }

  //Check FBO status after resize, if something broke then die in a fire
  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
  if(status !== gl.FRAMEBUFFER_COMPLETE) {
    fbo.dispose()
    restoreFBOState(gl, state)
    throwFBOError(status)
  }

  //Restore framebuffer state
  restoreFBOState(gl, state)
}

Object.defineProperties(proto, {
  'shape': {
    get: function() {
      if(this._destroyed) {
        return [0,0]
      }
      return this._shapeVector
    },
    set: function(x) {
      if(!Array.isArray(x)) {
        x = [x|0, x|0]
      }
      if(x.length !== 2) {
        throw new Error('gl-fbo: Shape vector must be length 2')
      }

      var w = x[0]|0
      var h = x[1]|0
      reshapeFBO(this, w, h)

      return [w, h]
    },
    enumerable: false
  },
  'width': {
    get: function() {
      if(this._destroyed) {
        return 0
      }
      return this._shape[0]
    },
    set: function(w) {
      w = w|0
      reshapeFBO(this, w, this._shape[1])
      return w
    },
    enumerable: false
  },
  'height': {
    get: function() {
      if(this._destroyed) {
        return 0
      }
      return this._shape[1]
    },
    set: function(h) {
      h = h|0
      reshapeFBO(this, this._shape[0], h)
      return h
    },
    enumerable: false
  }
})

proto.bind = function() {
  if(this._destroyed) {
    return
  }
  var gl = this.gl
  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
  gl.viewport(0, 0, this._shape[0], this._shape[1])
}

proto.dispose = function() {
  if(this._destroyed) {
    return
  }
  this._destroyed = true
  var gl = this.gl
  gl.deleteFramebuffer(this.handle)
  this.handle = null
  if(this.depth) {
    this.depth.dispose()
    this.depth = null
  }
  if(this._depth_rb) {
    gl.deleteRenderbuffer(this._depth_rb)
    this._depth_rb = null
  }
  for(var i=0; i<this.color.length; ++i) {
    this.color[i].dispose()
    this.color[i] = null
  }
  if(this._color_rb) {
    gl.deleteRenderbuffer(this._color_rb)
    this._color_rb = null
  }
}

function createFBO(gl, width, height, options) {

  //Update frame buffer error code values
  if(!FRAMEBUFFER_UNSUPPORTED) {
    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
  }

  //Lazily initialize color attachment arrays
  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
  }

  //Special case: Can accept an array as argument
  if(Array.isArray(width)) {
    options = height
    height = width[1]|0
    width = width[0]|0
  }

  if(typeof width !== 'number') {
    throw new Error('gl-fbo: Missing shape parameter')
  }

  //Validate width/height properties
  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
    throw new Error('gl-fbo: Parameters are too large for FBO')
  }

  //Handle each option type
  options = options || {}

  //Figure out number of color buffers to use
  var numColors = 1
  if('color' in options) {
    numColors = Math.max(options.color|0, 0)
    if(numColors < 0) {
      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
    }
    if(numColors > 1) {
      //Check if multiple render targets supported
      if(!WEBGL_draw_buffers) {
        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
      }
    }
  }

  //Determine whether to use floating point textures
  var colorType = gl.UNSIGNED_BYTE
  var OES_texture_float = gl.getExtension('OES_texture_float')
  if(options.float && numColors > 0) {
    if(!OES_texture_float) {
      throw new Error('gl-fbo: Context does not support floating point textures')
    }
    colorType = gl.FLOAT
  } else if(options.preferFloat && numColors > 0) {
    if(OES_texture_float) {
      colorType = gl.FLOAT
    }
  }

  //Check if we should use depth buffer
  var useDepth = true
  if('depth' in options) {
    useDepth = !!options.depth
  }

  //Check if we should use a stencil buffer
  var useStencil = false
  if('stencil' in options) {
    useStencil = !!options.stencil
  }

  return new Framebuffer(
    gl,
    width,
    height,
    colorType,
    numColors,
    useDepth,
    useStencil,
    WEBGL_draw_buffers)
}

},{"gl-texture2d":140}],82:[function(require,module,exports){

var sprintf = require('sprintf-js').sprintf;
var glConstants = require('gl-constants/lookup');
var shaderName = require('glsl-shader-name');
var addLineNumbers = require('add-line-numbers');

module.exports = formatCompilerError;

function formatCompilerError(errLog, src, type) {
    "use strict";

    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';

    var typeName = 'unknown type';
    if (type !== undefined) {
        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
    }

    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
    var shortForm = sprintf("%s%s", longForm, errLog);

    var errorStrings = errLog.split('\n');
    var errors = {};

    for (var i = 0; i < errorStrings.length; i++) {
        var errorString = errorStrings[i];
        if (errorString === '') continue;
        var lineNo = parseInt(errorString.split(':')[2]);
        if (isNaN(lineNo)) {
            throw new Error(sprintf('Could not parse error: %s', errorString));
        }
        errors[lineNo] = errorString;
    }

    var lines = addLineNumbers(src).split('\n');

    for (var i = 0; i < lines.length; i++) {
        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
        var line = lines[i];
        longForm += line + '\n';
        if (errors[i+1]) {
            var e = errors[i+1];
            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
            longForm += sprintf('^^^ %s\n\n', e);
        }
    }

    return {
        long: longForm.trim(),
        short: shortForm.trim()
    };
}


},{"add-line-numbers":10,"gl-constants/lookup":75,"glsl-shader-name":141,"sprintf-js":195}],83:[function(require,module,exports){
'use strict'

module.exports = createHeatmap2D

var bsearch = require('binary-search-bounds')
var iota = require('iota-array')
var pool = require('typedarray-pool')
var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')

var shaders = require('./lib/shaders')

function GLHeatmap2D (
  plot,
  shader,
  pickShader,
  positionBuffer,
  weightBuffer,
  colorBuffer,
  idBuffer) {
  this.plot = plot
  this.shader = shader
  this.pickShader = pickShader
  this.positionBuffer = positionBuffer
  this.weightBuffer = weightBuffer
  this.colorBuffer = colorBuffer
  this.idBuffer = idBuffer
  this.xData = []
  this.yData = []
  this.shape = [0, 0]
  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
  this.pickOffset = 0
}

var proto = GLHeatmap2D.prototype

var WEIGHTS = [
  0, 0,
  1, 0,
  0, 1,
  1, 0,
  1, 1,
  0, 1
]

proto.draw = (function () {
  var MATRIX = [
    1, 0, 0,
    0, 1, 0,
    0, 0, 1
  ]

  return function () {
    var plot = this.plot
    var shader = this.shader
    var bounds = this.bounds
    var numVertices = this.numVertices

    if (numVertices <= 0) {
      return
    }

    var gl = plot.gl
    var dataBox = plot.dataBox

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    MATRIX[0] = 2.0 * boundX / dataX
    MATRIX[4] = 2.0 * boundY / dataY
    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0

    shader.bind()

    var uniforms = shader.uniforms
    uniforms.viewTransform = MATRIX

    uniforms.shape = this.shape

    var attributes = shader.attributes
    this.positionBuffer.bind()
    attributes.position.pointer()

    this.weightBuffer.bind()
    attributes.weight.pointer(gl.UNSIGNED_BYTE, false)

    this.colorBuffer.bind()
    attributes.color.pointer(gl.UNSIGNED_BYTE, true)

    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
  }
})()

proto.drawPick = (function () {
  var MATRIX = [
    1, 0, 0,
    0, 1, 0,
    0, 0, 1
  ]

  var PICK_VECTOR = [0, 0, 0, 0]

  return function (pickOffset) {
    var plot = this.plot
    var shader = this.pickShader
    var bounds = this.bounds
    var numVertices = this.numVertices

    if (numVertices <= 0) {
      return
    }

    var gl = plot.gl
    var dataBox = plot.dataBox

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    MATRIX[0] = 2.0 * boundX / dataX
    MATRIX[4] = 2.0 * boundY / dataY
    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0

    for (var i = 0; i < 4; ++i) {
      PICK_VECTOR[i] = (pickOffset >> (i * 8)) & 0xff
    }

    this.pickOffset = pickOffset

    shader.bind()

    var uniforms = shader.uniforms
    uniforms.viewTransform = MATRIX
    uniforms.pickOffset = PICK_VECTOR
    uniforms.shape = this.shape

    var attributes = shader.attributes
    this.positionBuffer.bind()
    attributes.position.pointer()

    this.weightBuffer.bind()
    attributes.weight.pointer(gl.UNSIGNED_BYTE, false)

    this.idBuffer.bind()
    attributes.pickId.pointer(gl.UNSIGNED_BYTE, false)

    gl.drawArrays(gl.TRIANGLES, 0, numVertices)

    return pickOffset + this.shape[0] * this.shape[1]
  }
})()

proto.pick = function (x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.shape[0] * this.shape[1]
  if (value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var xData = this.xData
  var yData = this.yData
  return {
    object: this,
    pointId: pointId,
    dataCoord: [
      xData[pointId % this.shape[0]],
      yData[(pointId / this.shape[0]) | 0]]
  }
}

proto.update = function (options) {
  options = options || {}

  var shape = options.shape || [0, 0]

  var x = options.x || iota(shape[0])
  var y = options.y || iota(shape[1])
  var z = options.z || new Float32Array(shape[0] * shape[1])

  this.xData = x
  this.yData = y

  var colorLevels = options.colorLevels || [0]
  var colorValues = options.colorValues || [0, 0, 0, 1]
  var colorCount = colorLevels.length

  var bounds = this.bounds
  var lox = bounds[0] = x[0]
  var loy = bounds[1] = y[0]
  var hix = bounds[2] = x[x.length - 1]
  var hiy = bounds[3] = y[y.length - 1]

  var xs = 1.0 / (hix - lox)
  var ys = 1.0 / (hiy - loy)

  var numX = shape[0]
  var numY = shape[1]

  this.shape = [numX, numY]

  var numVerts = (numX - 1) * (numY - 1) * (WEIGHTS.length >>> 1)

  this.numVertices = numVerts

  var colors = pool.mallocUint8(numVerts * 4)
  var positions = pool.mallocFloat32(numVerts * 2)
  var weights   = pool.mallocUint8 (numVerts * 2)
  var ids = pool.mallocUint32(numVerts)

  var ptr = 0

  for (var j = 0; j < numY - 1; ++j) {
    var yc0 = ys * (y[j] - loy)
    var yc1 = ys * (y[j + 1] - loy)
    for (var i = 0; i < numX - 1; ++i) {
      var xc0 = xs * (x[i] - lox)
      var xc1 = xs * (x[i + 1] - lox)

      for (var dd = 0; dd < WEIGHTS.length; dd += 2) {
        var dx = WEIGHTS[dd]
        var dy = WEIGHTS[dd + 1]
        var offset = (j + dy) * numX + (i + dx)
        var zc = z[offset]
        var colorIdx = bsearch.le(colorLevels, zc)
        var r, g, b, a
        if (colorIdx < 0) {
          r = colorValues[0]
          g = colorValues[1]
          b = colorValues[2]
          a = colorValues[3]
        } else if (colorIdx === colorCount - 1) {
          r = colorValues[4 * colorCount - 4]
          g = colorValues[4 * colorCount - 3]
          b = colorValues[4 * colorCount - 2]
          a = colorValues[4 * colorCount - 1]
        } else {
          var t = (zc - colorLevels[colorIdx]) /
            (colorLevels[colorIdx + 1] - colorLevels[colorIdx])
          var ti = 1.0 - t
          var i0 = 4 * colorIdx
          var i1 = 4 * (colorIdx + 1)
          r = ti * colorValues[i0] + t * colorValues[i1]
          g = ti * colorValues[i0 + 1] + t * colorValues[i1 + 1]
          b = ti * colorValues[i0 + 2] + t * colorValues[i1 + 2]
          a = ti * colorValues[i0 + 3] + t * colorValues[i1 + 3]
        }

        colors[4 * ptr] = 255 * r
        colors[4 * ptr + 1] = 255 * g
        colors[4 * ptr + 2] = 255 * b
        colors[4 * ptr + 3] = 255 * a

        positions[2*ptr] = xc0*.5 + xc1*.5;
        positions[2*ptr+1] = yc0*.5 + yc1*.5;

        weights[2*ptr] = dx;
        weights[2*ptr+1] = dy;

        ids[ptr] = j * numX + i

        ptr += 1
      }
    }
  }

  this.positionBuffer.update(positions)
  this.weightBuffer.update(weights)
  this.colorBuffer.update(colors)
  this.idBuffer.update(ids)

  pool.free(positions)
  pool.free(colors)
  pool.free(weights)
  pool.free(ids)
}

proto.dispose = function () {
  this.shader.dispose()
  this.pickShader.dispose()
  this.positionBuffer.dispose()
  this.weightBuffer.dispose()
  this.colorBuffer.dispose()
  this.idBuffer.dispose()
  this.plot.removeObject(this)
}

function createHeatmap2D (plot, options) {
  var gl = plot.gl

  var shader = createShader(gl, shaders.vertex, shaders.fragment)
  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)

  var positionBuffer = createBuffer(gl)
  var weightBuffer   = createBuffer(gl)
  var colorBuffer = createBuffer(gl)
  var idBuffer = createBuffer(gl)

  var heatmap = new GLHeatmap2D(
    plot,
    shader,
    pickShader,
    positionBuffer,
    weightBuffer,
    colorBuffer,
    idBuffer)

  heatmap.update(options)
  plot.addObject(heatmap)

  return heatmap
}

},{"./lib/shaders":84,"binary-search-bounds":85,"gl-buffer":73,"gl-shader":132,"iota-array":153,"typedarray-pool":205}],84:[function(require,module,exports){
'use strict'



module.exports = {
  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\nattribute vec2 weight;\n\nuniform vec2 shape;\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vPosition = viewTransform * vec3( position + (weight-.5)/(shape-1.) , 1.0);\n  fragColor = color;\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",
  pickFragment: "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\nvarying vec2 vWeight;\n\nuniform vec2 shape;\nuniform vec4 pickOffset;\n\nvoid main() {\n  vec2 d = step(.5, vWeight);\n  vec4 id = fragId + pickOffset;\n  id.x += d.x + d.y*shape.x;\n\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  gl_FragColor = id/255.;\n}\n",
  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\nattribute vec2 weight;\n\nuniform vec2 shape;\nuniform mat3 viewTransform;\n\nvarying vec4 fragId;\nvarying vec2 vWeight;\n\nvoid main() {\n  vWeight = weight;\n\n  fragId = pickId;\n\n  vec3 vPosition = viewTransform * vec3( position + (weight-.5)/(shape-1.) , 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
}

},{}],85:[function(require,module,exports){
arguments[4][47][0].apply(exports,arguments)
},{"dup":47}],86:[function(require,module,exports){


exports.lineVertex    = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo, dHi, dLo;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo, screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvec2 project_2_1(vec2 scHi, vec2 scLo, vec2 posHi, vec2 posLo) {\n  return scHi * posHi\n       + scLo * posHi\n       + scHi * posLo\n       + scLo * posLo;\n}\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  vec2 dir = project_2_1(scaleHi, scaleLo, dHi, dLo);\n  vec2 n = 0.5 * width * normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(p + n, 0.0, 1.0);\n}"
exports.lineFragment  = "precision highp float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}"
exports.mitreVertex   = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo;\nuniform float radius;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  gl_Position = vec4(p, 0.0, 1.0);\n  gl_PointSize = radius;\n}"
exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}"
exports.pickVertex    = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo, dHi;\nattribute vec4 pick0, pick1;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo, screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  vec2 n = width * normalize(screenShape.yx * vec2(dHi.y, -dHi.x)) / screenShape.xy;\n  gl_Position = vec4(p + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}"
exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}"
exports.fillVertex    = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo, dHi;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo, projectAxis;\nuniform float projectValue, depth;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  if(dHi.y < 0.0 || (dHi.y == 0.0 && dHi.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}"
exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}"
},{}],87:[function(require,module,exports){
'use strict'

module.exports = createLinePlot

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var createTexture = require('gl-texture2d')
var ndarray = require('ndarray')
var pool = require('typedarray-pool')

var SHADERS = require('./lib/shaders')

function GLLine2D(
  plot,
  dashPattern,
  lineBufferHi,
  lineBufferLo,
  pickBuffer,
  lineShader,
  mitreShader,
  fillShader,
  pickShader) {

  this.plot         = plot
  this.dashPattern  = dashPattern
  this.lineBufferHi = lineBufferHi
  this.lineBufferLo = lineBufferLo
  this.pickBuffer   = pickBuffer
  this.lineShader   = lineShader
  this.mitreShader  = mitreShader
  this.fillShader   = fillShader
  this.pickShader   = pickShader
  this.usingDashes  = false

  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
  this.width      = 1
  this.color      = [0, 0, 1, 1]

  //Fill to axes
  this.fill       = [false, false, false, false]
  this.fillColor  = [
    [0, 0, 0, 1],
    [0, 0, 0, 1],
    [0, 0, 0, 1],
    [0, 0, 0, 1]
  ]

  this.data       = null
  this.numPoints  = 0
  this.vertCount  = 0

  this.pickOffset = 0
}

var proto = GLLine2D.prototype

proto.setProjectionModel = (function() {

  var pm = {
    scaleHi: new Float32Array([0, 0]),
    scaleLo: new Float32Array([0, 0]),
    translateHi: new Float32Array([0, 0]),
    translateLo: new Float32Array([0, 0]),
    screenShape: [0, 0]
  }

  return function() {

    var bounds  = this.bounds
    var viewBox = this.plot.viewBox
    var dataBox = this.plot.dataBox

    var boundX  = bounds[2] - bounds[0]
    var boundY  = bounds[3] - bounds[1]
    var dataX   = dataBox[2] - dataBox[0]
    var dataY   = dataBox[3] - dataBox[1]
    var screenX = viewBox[2] - viewBox[0]
    var screenY = viewBox[3] - viewBox[1]

    var scaleX = 2 * boundX / dataX
    var scaleY = 2 * boundY / dataY
    var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
    var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

    pm.scaleHi[0]     = scaleX
    pm.scaleHi[1]     = scaleY
    pm.scaleLo[0]     = scaleX - pm.scaleHi[0]
    pm.scaleLo[1]     = scaleY - pm.scaleHi[1]
    pm.translateHi[0] = translateX
    pm.translateHi[1] = translateY
    pm.translateLo[0] = translateX - pm.translateHi[0]
    pm.translateLo[1] = translateY - pm.translateHi[1]

    pm.screenShape[0] = screenX
    pm.screenShape[1] = screenY

    return pm
  }
})()

proto.setProjectionUniforms = function(uniforms, projectionModel) {
  uniforms.scaleHi = projectionModel.scaleHi
  uniforms.scaleLo = projectionModel.scaleLo
  uniforms.translateHi = projectionModel.translateHi
  uniforms.translateLo = projectionModel.translateLo
  uniforms.screenShape = projectionModel.screenShape
}

proto.draw = (function() {

  var PX_AXIS = [1, 0]
  var NX_AXIS = [-1, 0]
  var PY_AXIS = [0, 1]
  var NY_AXIS = [0, -1]

  return function() {
    var count = this.vertCount

    if(!count) {
      return
    }

    var projectionModel = this.setProjectionModel()

    var plot       = this.plot
    var width      = this.width
    var gl         = plot.gl
    var pixelRatio = plot.pixelRatio

    var color     = this.color

    var fillAttributes = this.fillShader.attributes

    this.lineBufferLo.bind()
    fillAttributes.aLo.pointer(gl.FLOAT, false, 16, 0)

    this.lineBufferHi.bind()

    var fill = this.fill

    if(fill[0] || fill[1] || fill[2] || fill[3]) {

      var fillShader = this.fillShader
      fillShader.bind()

      var fillUniforms = fillShader.uniforms
      this.setProjectionUniforms(fillUniforms, projectionModel)
      fillUniforms.depth = plot.nextDepthValue()

      fillAttributes.aHi.pointer(gl.FLOAT, false, 16, 0)
      fillAttributes.dHi.pointer(gl.FLOAT, false, 16, 8)

      gl.depthMask(true)
      gl.enable(gl.DEPTH_TEST)

      var fillColor = this.fillColor
      if(fill[0]) {
        fillUniforms.color        = fillColor[0]
        fillUniforms.projectAxis  = NX_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      if(fill[1]) {
        fillUniforms.color        = fillColor[1]
        fillUniforms.projectAxis  = NY_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      if(fill[2]) {
        fillUniforms.color        = fillColor[2]
        fillUniforms.projectAxis  = PX_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      if(fill[3]) {
        fillUniforms.color        = fillColor[3]
        fillUniforms.projectAxis  = PY_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      gl.depthMask(false)
      gl.disable(gl.DEPTH_TEST)
    }

    var shader = this.lineShader
    shader.bind()

    this.lineBufferLo.bind()
    shader.attributes.aLo.pointer(gl.FLOAT, false, 16, 0)
    shader.attributes.dLo.pointer(gl.FLOAT, false, 16, 8)

    this.lineBufferHi.bind()

    var uniforms = shader.uniforms
    this.setProjectionUniforms(uniforms, projectionModel)
    uniforms.color  = color
    uniforms.width  = width * pixelRatio
    uniforms.dashPattern = this.dashPattern.bind()
    uniforms.dashLength = this.dashLength * pixelRatio

    var attributes = shader.attributes
    attributes.aHi.pointer(gl.FLOAT, false, 16, 0)
    attributes.dHi.pointer(gl.FLOAT, false, 16, 8)

    gl.drawArrays(gl.TRIANGLES, 0, count)

    //Draw mitres
    if(width > 2 && !this.usingDashes) {
      var mshader = this.mitreShader

      this.lineBufferLo.bind()
      mshader.attributes.aLo.pointer(gl.FLOAT, false, 48, 0)

      this.lineBufferHi.bind()
      mshader.bind()

      var muniforms = mshader.uniforms
      this.setProjectionUniforms(muniforms, projectionModel)
      muniforms.color  = color
      muniforms.radius = width * pixelRatio

      mshader.attributes.aHi.pointer(gl.FLOAT, false, 48, 0)
      gl.drawArrays(gl.POINTS, 0, (count / 3) | 0)
    }
  }
})()

proto.drawPick = (function() {

  var PICK_OFFSET = [0, 0, 0, 0]

  return function(pickOffset) {

    var count      = this.vertCount
    var numPoints  = this.numPoints

    this.pickOffset = pickOffset
    if(!count) {
      return pickOffset + numPoints
    }

    var projectionModel = this.setProjectionModel()

    var plot       = this.plot
    var width      = this.width
    var gl         = plot.gl
    var pixelRatio = plot.pickPixelRatio

    var shader     = this.pickShader
    var pickBuffer = this.pickBuffer

    PICK_OFFSET[0] =  pickOffset         & 0xff
    PICK_OFFSET[1] = (pickOffset >>> 8)  & 0xff
    PICK_OFFSET[2] = (pickOffset >>> 16) & 0xff
    PICK_OFFSET[3] =  pickOffset >>> 24

    shader.bind()

    var uniforms = shader.uniforms
    this.setProjectionUniforms(uniforms, projectionModel)
    uniforms.width       = width * pixelRatio
    uniforms.pickOffset  = PICK_OFFSET

    var attributes = shader.attributes

    this.lineBufferHi.bind()
    attributes.aHi.pointer(gl.FLOAT, false, 16, 0)
    attributes.dHi.pointer(gl.FLOAT, false, 16, 8)

    this.lineBufferLo.bind()
    attributes.aLo.pointer(gl.FLOAT, false, 16, 0)

    //attributes.dLo.pointer(gl.FLOAT, false, 16, 8)

    pickBuffer.bind()
    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)

    gl.drawArrays(gl.TRIANGLES, 0, count)

    return pickOffset + numPoints
  }
})()

proto.pick = function(x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.numPoints
  if(value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var points = this.data
  return {
    object:    this,
    pointId:   pointId,
    dataCoord: [points[2 * pointId], points[2 * pointId + 1]]
  }
}

function deepCopy(arr) {
  return arr.map(function(x) {
    return x.slice()
  })
}

proto.update = function(options) {
  options = options || {}

  var gl = this.plot.gl
  var i, j, ptr, ax, ay

  this.color = (options.color || [0, 0, 1, 1]).slice()
  this.width = +(options.width || 1)
  this.fill = (options.fill || [false, false, false, false]).slice()
  this.fillColor = deepCopy(options.fillColor || [
      [0, 0, 0, 1],
      [0, 0, 0, 1],
      [0, 0, 0, 1],
      [0, 0, 0, 1]
    ])

  var dashes = options.dashes || [1]
  var dashLength = 0
  for(i = 0; i < dashes.length; ++i) {
    dashLength += dashes[i]
  }
  var dashData = pool.mallocUint8(dashLength)
  ptr = 0
  var fillColor = 255
  for(i = 0; i < dashes.length; ++i) {
    for(j = 0; j < dashes[i]; ++j) {
      dashData[ptr++] = fillColor
    }
    fillColor ^= 255
  }
  this.dashPattern.dispose()
  this.usingDashes = dashes.length > 1

  this.dashPattern = createTexture(gl, ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
  this.dashPattern.minFilter = gl.NEAREST
  this.dashPattern.magFilter = gl.NEAREST
  this.dashLength = dashLength
  pool.free(dashData)

  var data = options.positions
  this.data = data

  var bounds = this.bounds
  bounds[0] = bounds[1] = Infinity
  bounds[2] = bounds[3] = -Infinity

  var numPoints = this.numPoints = data.length >>> 1
  if(numPoints === 0) {
    return
  }

  for(i = 0; i < numPoints; ++i) {
    ax = data[2 * i]
    ay = data[2 * i + 1]

    if (isNaN(ax) || isNaN(ay)) {
      continue
    }

    bounds[0] = Math.min(bounds[0], ax)
    bounds[1] = Math.min(bounds[1], ay)
    bounds[2] = Math.max(bounds[2], ax)
    bounds[3] = Math.max(bounds[3], ay)
  }

  if(bounds[0] === bounds[2]) bounds[2] += 1
  if(bounds[3] === bounds[1]) bounds[3] += 1

  //Generate line data
  var lineData    = pool.mallocFloat64(24 * (numPoints - 1))
  var lineDataHi  = pool.mallocFloat32(24 * (numPoints - 1))
  var lineDataLo  = pool.mallocFloat32(24 * (numPoints - 1))
  var pickData    = pool.mallocUint32(12 * (numPoints - 1))
  var lineDataPtr = lineDataHi.length
  var pickDataPtr = pickData.length
  ptr = numPoints

  var count = 0

  while(ptr > 1) {
    var id = --ptr
    ax = data[2 * ptr]
    ay = data[2 * ptr + 1]

    var next = id - 1
    var bx = data[2 * next]
    var by = data[2 * next + 1]

    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
      continue
    }

    count += 1

    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])

    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
    by = (by - bounds[1]) / (bounds[3] - bounds[1])

    var dx = bx - ax
    var dy = by - ay

    var akey0 = id       | (1 << 24)
    var akey1 = (id - 1)
    var bkey0 = id
    var bkey1 = (id - 1) | (1 << 24)

    lineData[--lineDataPtr] = -dy
    lineData[--lineDataPtr] = -dx
    lineData[--lineDataPtr] = ay
    lineData[--lineDataPtr] = ax
    pickData[--pickDataPtr] = akey0
    pickData[--pickDataPtr] = akey1

    lineData[--lineDataPtr] = dy
    lineData[--lineDataPtr] = dx
    lineData[--lineDataPtr] = by
    lineData[--lineDataPtr] = bx
    pickData[--pickDataPtr] = bkey0
    pickData[--pickDataPtr] = bkey1

    lineData[--lineDataPtr] = -dy
    lineData[--lineDataPtr] = -dx
    lineData[--lineDataPtr] = by
    lineData[--lineDataPtr] = bx
    pickData[--pickDataPtr] = bkey0
    pickData[--pickDataPtr] = bkey1

    lineData[--lineDataPtr] = dy
    lineData[--lineDataPtr] = dx
    lineData[--lineDataPtr] = by
    lineData[--lineDataPtr] = bx
    pickData[--pickDataPtr] = bkey0
    pickData[--pickDataPtr] = bkey1

    lineData[--lineDataPtr] = -dy
    lineData[--lineDataPtr] = -dx
    lineData[--lineDataPtr] = ay
    lineData[--lineDataPtr] = ax
    pickData[--pickDataPtr] = akey0
    pickData[--pickDataPtr] = akey1

    lineData[--lineDataPtr] = dy
    lineData[--lineDataPtr] = dx
    lineData[--lineDataPtr] = ay
    lineData[--lineDataPtr] = ax
    pickData[--pickDataPtr] = akey0
    pickData[--pickDataPtr] = akey1
  }

  for(i = 0; i < lineData.length; i++) {
    lineDataHi[i] = lineData[i]
    lineDataLo[i] = lineData[i] - lineDataHi[i]
  }

  this.vertCount = 6 * count
  this.lineBufferHi.update(lineDataHi.subarray(lineDataPtr))
  this.lineBufferLo.update(lineDataLo.subarray(lineDataPtr))
  this.pickBuffer.update(pickData.subarray(pickDataPtr))

  pool.free(lineData)
  pool.free(lineDataHi)
  pool.free(lineDataLo)
  pool.free(pickData)
}

proto.dispose = function() {
  this.plot.removeObject(this)
  this.lineBufferLo.dispose()
  this.lineBufferHi.dispose()
  this.pickBuffer.dispose()
  this.lineShader.dispose()
  this.mitreShader.dispose()
  this.fillShader.dispose()
  this.pickShader.dispose()
  this.dashPattern.dispose()
}

function createLinePlot(plot, options) {
  var gl = plot.gl
  var lineBufferHi = createBuffer(gl)
  var lineBufferLo = createBuffer(gl)
  var pickBuffer   = createBuffer(gl)
  var dashPattern  = createTexture(gl, [1, 1])
  var lineShader   = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
  var mitreShader  = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
  var fillShader   = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
  var pickShader   = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
  var linePlot     = new GLLine2D(
    plot,
    dashPattern,
    lineBufferHi,
    lineBufferLo,
    pickBuffer,
    lineShader,
    mitreShader,
    fillShader,
    pickShader)
  plot.addObject(linePlot)
  linePlot.update(options)
  return linePlot
}
},{"./lib/shaders":86,"gl-buffer":73,"gl-shader":132,"gl-texture2d":140,"ndarray":163,"typedarray-pool":205}],88:[function(require,module,exports){
module.exports = fromQuat;

/**
 * Creates a matrix from a quaternion rotation.
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat4} q Rotation quaternion
 * @returns {mat4} out
 */
function fromQuat(out, q) {
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        yx = y * x2,
        yy = y * y2,
        zx = z * x2,
        zy = z * y2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - yy - zz;
    out[1] = yx + wz;
    out[2] = zx - wy;
    out[3] = 0;

    out[4] = yx - wz;
    out[5] = 1 - xx - zz;
    out[6] = zy + wx;
    out[7] = 0;

    out[8] = zx + wy;
    out[9] = zy - wx;
    out[10] = 1 - xx - yy;
    out[11] = 0;

    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;

    return out;
};
},{}],89:[function(require,module,exports){
'use strict'

module.exports = createBoxes

var createBuffer = require('gl-buffer')
var createShader = require('gl-shader')

var shaders = require('./shaders')

function Boxes(plot, vbo, shader) {
  this.plot   = plot
  this.vbo    = vbo
  this.shader = shader
}

var proto = Boxes.prototype

proto.bind = function() {
  var shader = this.shader
  this.vbo.bind()
  this.shader.bind()
  shader.attributes.coord.pointer()
  shader.uniforms.screenBox = this.plot.screenBox
}

proto.drawBox = (function() {
  var lo = [0,0]
  var hi = [0,0]
  return function(loX, loY, hiX, hiY, color) {
    var plot       = this.plot
    var shader     = this.shader
    var gl         = plot.gl

    lo[0] = loX
    lo[1] = loY
    hi[0] = hiX
    hi[1] = hiY

    shader.uniforms.lo     = lo
    shader.uniforms.hi     = hi
    shader.uniforms.color  = color

    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
  }
}())

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
}

function createBoxes(plot) {
  var gl  = plot.gl
  var vbo = createBuffer(gl, [
    0,0,
    0,1,
    1,0,
    1,1])
  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
  return new Boxes(plot, vbo, shader)
}

},{"./shaders":92,"gl-buffer":73,"gl-shader":95}],90:[function(require,module,exports){
'use strict'

module.exports = createGrid

var createBuffer  = require('gl-buffer')
var createShader  = require('gl-shader')
var bsearch       = require('binary-search-bounds')
var shaders       = require('./shaders')

function Grid(plot, vbo, shader, tickShader) {
  this.plot   = plot
  this.vbo    = vbo
  this.shader = shader
  this.tickShader = tickShader
  this.ticks  = [[], []]
}

function compareTickNum(a, b) {
  return a - b
}

var proto = Grid.prototype

proto.draw = (function() {

  var DATA_SHIFT = [0,0]
  var DATA_SCALE = [0,0]
  var DATA_AXIS  = [0,0]

  return function() {
    var plot       = this.plot
    var vbo        = this.vbo
    var shader     = this.shader
    var ticks      = this.ticks
    var gl         = plot.gl
    var bounds     = plot._tickBounds
    var dataBox    = plot.dataBox
    var viewPixels = plot.viewBox
    var lineWidth  = plot.gridLineWidth
    var gridColor  = plot.gridLineColor
    var gridEnable = plot.gridLineEnable
    var pixelRatio = plot.pixelRatio

    for(var i=0; i<2; ++i) {
      var lo = bounds[i]
      var hi = bounds[i+2]
      var boundScale = hi - lo
      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
      var dataWidth   = dataBox[i+2] - dataBox[i]
      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
    }

    shader.bind()
    vbo.bind()
    shader.attributes.dataCoord.pointer()
    shader.uniforms.dataShift = DATA_SHIFT
    shader.uniforms.dataScale = DATA_SCALE

    var offset = 0
    for(var i=0; i<2; ++i) {
      DATA_AXIS[0] = DATA_AXIS[1] = 0
      DATA_AXIS[i] = 1
      shader.uniforms.dataAxis  = DATA_AXIS
      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
      shader.uniforms.color     = gridColor[i]

      var size = ticks[i].length * 6
      if(gridEnable[i] && size) {
        gl.drawArrays(gl.TRIANGLES, offset, size)
      }
      offset += size
    }
  }
})()

proto.drawTickMarks = (function() {
  var DATA_SHIFT = [0,0]
  var DATA_SCALE = [0,0]
  var X_AXIS     = [1,0]
  var Y_AXIS     = [0,1]
  var SCR_OFFSET = [0,0]
  var TICK_SCALE = [0,0]

  return function() {
    var plot       = this.plot
    var vbo        = this.vbo
    var shader     = this.tickShader
    var ticks      = this.ticks
    var gl         = plot.gl
    var bounds     = plot._tickBounds
    var dataBox    = plot.dataBox
    var viewBox    = plot.viewBox
    var pixelRatio = plot.pixelRatio
    var screenBox  = plot.screenBox

    var screenWidth  = screenBox[2] - screenBox[0]
    var screenHeight = screenBox[3] - screenBox[1]
    var viewWidth    = viewBox[2]   - viewBox[0]
    var viewHeight   = viewBox[3]   - viewBox[1]

    for(var i=0; i<2; ++i) {
      var lo = bounds[i]
      var hi = bounds[i+2]
      var boundScale = hi - lo
      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
      var dataWidth   = (dataBox[i+2] - dataBox[i])
      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
    }

    DATA_SCALE[0] *= viewWidth / screenWidth
    DATA_SHIFT[0] *= viewWidth / screenWidth

    DATA_SCALE[1] *= viewHeight / screenHeight
    DATA_SHIFT[1] *= viewHeight / screenHeight

    shader.bind()
    vbo.bind()

    shader.attributes.dataCoord.pointer()

    var uniforms = shader.uniforms
    uniforms.dataShift = DATA_SHIFT
    uniforms.dataScale = DATA_SCALE

    var tickMarkLength = plot.tickMarkLength
    var tickMarkWidth  = plot.tickMarkWidth
    var tickMarkColor  = plot.tickMarkColor

    var xTicksOffset = 0
    var yTicksOffset = ticks[0].length * 6

    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
    var xOffset = xTicksOffset + 6 * xStart
    var xCount  = 6 * Math.max(0, xEnd - xStart)

    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
    var yOffset = yTicksOffset + 6 * yStart
    var yCount  = 6 * Math.max(0, yEnd - yStart)

    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight

    if(yCount) {
      uniforms.color        = tickMarkColor[1]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = Y_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
    }

    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight

    if(xCount) {
      uniforms.color        = tickMarkColor[0]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = X_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
    }

    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight

    if(yCount) {
      uniforms.color        = tickMarkColor[3]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = Y_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
    }

    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight

    if(xCount) {
      uniforms.color        = tickMarkColor[2]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = X_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
    }
  }
})()

proto.update = (function() {
  var OFFSET_X = [1,  1, -1, -1,  1, -1]
  var OFFSET_Y = [1, -1,  1,  1, -1, -1]

  return function(options) {
    var ticks  = options.ticks
    var bounds = options.bounds
    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))

    var zeroLineEnable = this.plot.zeroLineEnable

    var ptr    = 0
    var gridTicks = [[], []]
    for(var dim=0; dim<2; ++dim) {
      var localTicks = gridTicks[dim]
      var axisTicks = ticks[dim]
      var lo = bounds[dim]
      var hi = bounds[dim+2]
      for(var i=0; i<axisTicks.length; ++i) {
        var x = (axisTicks[i].x - lo) / (hi - lo)
        localTicks.push(x)
        for(var j=0; j<6; ++j) {
          data[ptr++] = x
          data[ptr++] = OFFSET_X[j]
          data[ptr++] = OFFSET_Y[j]
        }
      }
    }

    this.ticks = gridTicks
    this.vbo.update(data)
  }
})()

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
  this.tickShader.dispose()
}

function createGrid(plot) {
  var gl     = plot.gl
  var vbo    = createBuffer(gl)
  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
  var grid   = new Grid(plot, vbo, shader, tickShader)
  return grid
}

},{"./shaders":92,"binary-search-bounds":94,"gl-buffer":73,"gl-shader":95}],91:[function(require,module,exports){
'use strict'

module.exports = createLines

var createBuffer = require('gl-buffer')
var createShader = require('gl-shader')

var shaders = require('./shaders')

function Lines(plot, vbo, shader) {
  this.plot   = plot
  this.vbo    = vbo
  this.shader = shader
}

var proto = Lines.prototype

proto.bind = function() {
  var shader = this.shader
  this.vbo.bind()
  this.shader.bind()
  shader.attributes.coord.pointer()
  shader.uniforms.screenBox = this.plot.screenBox
}

proto.drawLine = (function() {
  var start = [0,0]
  var end   = [0,0]
  return function(startX, startY, endX, endY, width, color) {
    var plot       = this.plot
    var shader     = this.shader
    var gl         = plot.gl

    start[0] = startX
    start[1] = startY
    end[0]   = endX
    end[1]   = endY

    shader.uniforms.start  = start
    shader.uniforms.end    = end
    shader.uniforms.width  = width * plot.pixelRatio
    shader.uniforms.color  = color

    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
  }
}())

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
}

function createLines(plot) {
  var gl  = plot.gl
  var vbo = createBuffer(gl, [
    -1,-1,
    -1,1,
    1,-1,
    1,1])
  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
  var lines   = new Lines(plot, vbo, shader)
  return lines
}

},{"./shaders":92,"gl-buffer":73,"gl-shader":95}],92:[function(require,module,exports){
'use strict'



var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"

module.exports = {
  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
  lineFrag: FRAGMENT,
  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
  textFrag: FRAGMENT,
  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
  gridFrag: FRAGMENT,
  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
}

},{}],93:[function(require,module,exports){
'use strict'

module.exports = createTextElements

var createBuffer = require('gl-buffer')
var createShader = require('gl-shader')
var getText      = require('text-cache')
var bsearch      = require('binary-search-bounds')
var shaders      = require('./shaders')

function TextElements(plot, vbo, shader) {
  this.plot         = plot
  this.vbo          = vbo
  this.shader       = shader
  this.tickOffset   = [[],[]]
  this.tickX        = [[],[]]
  this.labelOffset  = [0,0]
  this.labelCount   = [0,0]
}

var proto = TextElements.prototype

proto.drawTicks = (function() {
  var DATA_AXIS = [0,0]
  var SCREEN_OFFSET = [0,0]
  var ZERO_2 = [0,0]

  return function(axis) {
    var plot        = this.plot
    var shader      = this.shader
    var tickX       = this.tickX[axis]
    var tickOffset  = this.tickOffset[axis]
    var gl          = plot.gl
    var viewBox     = plot.viewBox
    var dataBox     = plot.dataBox
    var screenBox   = plot.screenBox
    var pixelRatio  = plot.pixelRatio
    var tickEnable  = plot.tickEnable
    var tickPad     = plot.tickPad
    var textColor   = plot.tickColor
    var textAngle   = plot.tickAngle
    // todo check if this should be used (now unused)
    // var tickLength  = plot.tickMarkLength

    var labelEnable = plot.labelEnable
    var labelPad    = plot.labelPad
    var labelColor  = plot.labelColor
    var labelAngle  = plot.labelAngle
    var labelOffset = this.labelOffset[axis]
    var labelCount  = this.labelCount[axis]

    var start = bsearch.lt(tickX, dataBox[axis])
    var end   = bsearch.le(tickX, dataBox[axis+2])

    DATA_AXIS[0]    = DATA_AXIS[1] = 0
    DATA_AXIS[axis] = 1

    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0

    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]

    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
    if(tickEnable[axis]) {
      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
      if(start < end && tickOffset[end] > tickOffset[start]) {
        shader.uniforms.dataAxis     = DATA_AXIS
        shader.uniforms.screenOffset = SCREEN_OFFSET
        shader.uniforms.color        = textColor[axis]
        shader.uniforms.angle        = textAngle[axis]
        gl.drawArrays(
          gl.TRIANGLES,
          tickOffset[start],
          tickOffset[end] - tickOffset[start])
      }
    }
    if(labelEnable[axis] && labelCount) {
      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
      shader.uniforms.dataAxis     = ZERO_2
      shader.uniforms.screenOffset = SCREEN_OFFSET
      shader.uniforms.color        = labelColor[axis]
      shader.uniforms.angle        = labelAngle[axis]
      gl.drawArrays(
        gl.TRIANGLES,
        labelOffset,
        labelCount)
    }

    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
    if(tickEnable[axis+2]) {
      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
      if(start < end && tickOffset[end] > tickOffset[start]) {
        shader.uniforms.dataAxis     = DATA_AXIS
        shader.uniforms.screenOffset = SCREEN_OFFSET
        shader.uniforms.color        = textColor[axis+2]
        shader.uniforms.angle        = textAngle[axis+2]
        gl.drawArrays(
          gl.TRIANGLES,
          tickOffset[start],
          tickOffset[end] - tickOffset[start])
      }
    }
    if(labelEnable[axis+2] && labelCount) {
      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
      shader.uniforms.dataAxis     = ZERO_2
      shader.uniforms.screenOffset = SCREEN_OFFSET
      shader.uniforms.color        = labelColor[axis+2]
      shader.uniforms.angle        = labelAngle[axis+2]
      gl.drawArrays(
        gl.TRIANGLES,
        labelOffset,
        labelCount)
    }

  }
})()

proto.drawTitle = (function() {
  var DATA_AXIS = [0,0]
  var SCREEN_OFFSET = [0,0]

  return function() {
    var plot        = this.plot
    var shader      = this.shader
    var gl          = plot.gl
    var screenBox   = plot.screenBox
    var titleCenter = plot.titleCenter
    var titleAngle  = plot.titleAngle
    var titleColor  = plot.titleColor
    var pixelRatio  = plot.pixelRatio

    if(!this.titleCount) {
      return
    }

    for(var i=0; i<2; ++i) {
      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
        (screenBox[2+i] - screenBox[i]) - 1
    }

    shader.bind()
    shader.uniforms.dataAxis      = DATA_AXIS
    shader.uniforms.screenOffset  = SCREEN_OFFSET
    shader.uniforms.angle         = titleAngle
    shader.uniforms.color         = titleColor

    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
  }
})()

proto.bind = (function() {
  var DATA_SHIFT = [0,0]
  var DATA_SCALE = [0,0]
  var TEXT_SCALE = [0,0]

  return function() {
    var plot      = this.plot
    var shader    = this.shader
    var bounds    = plot._tickBounds
    var dataBox   = plot.dataBox
    var screenBox = plot.screenBox
    var viewBox   = plot.viewBox

    shader.bind()

    //Set up coordinate scaling uniforms
    for(var i=0; i<2; ++i) {

      var lo = bounds[i]
      var hi = bounds[i+2]
      var boundScale = hi - lo
      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
      var dataWidth   = (dataBox[i+2] - dataBox[i])

      var viewLo = viewBox[i]
      var viewHi = viewBox[i+2]
      var viewScale = viewHi - viewLo
      var screenLo = screenBox[i]
      var screenHi = screenBox[i+2]
      var screenScale = screenHi - screenLo

      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
    }

    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])

    shader.uniforms.dataScale = DATA_SCALE
    shader.uniforms.dataShift = DATA_SHIFT
    shader.uniforms.textScale = TEXT_SCALE

    //Set attributes
    this.vbo.bind()
    shader.attributes.textCoordinate.pointer()
  }
})()

proto.update = function(options) {
  var vertices  = []
  var axesTicks = options.ticks
  var bounds    = options.bounds
  var i, j, k, data, scale, dimension

  for(dimension=0; dimension<2; ++dimension) {
    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]

    //Copy vertices over to buffer
    var ticks = axesTicks[dimension]
    for(i=0; i<ticks.length; ++i) {
      var tick  = ticks[i]
      var x     = tick.x
      var text  = tick.text
      var font  = tick.font || 'sans-serif'
      scale = (tick.fontSize || 12)

      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
      var coordShift = bounds[dimension]

      var rows = text.split('\n')
      for(var r = 0; r < rows.length; r++) {
        data = getText(font, rows[r]).data
        for (j = 0; j < data.length; j += 2) {
          vertices.push(
              data[j] * scale,
              -data[j + 1] * scale - r * scale * 1.2,
              (x - coordShift) * coordScale)
        }
      }

      offsets.push(Math.floor(vertices.length/3))
      tickX.push(x)
    }

    this.tickOffset[dimension] = offsets
    this.tickX[dimension] = tickX
  }

  //Add labels
  for(dimension=0; dimension<2; ++dimension) {
    this.labelOffset[dimension] = Math.floor(vertices.length/3)

    data  = getText(options.labelFont[dimension], options.labels[dimension], { textAlign: 'center' }).data
    scale = options.labelSize[dimension]
    for(i=0; i<data.length; i+=2) {
      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
    }

    this.labelCount[dimension] =
      Math.floor(vertices.length/3) - this.labelOffset[dimension]
  }

  //Add title
  this.titleOffset = Math.floor(vertices.length/3)
  data = getText(options.titleFont, options.title).data
  scale = options.titleSize
  for(i=0; i<data.length; i+=2) {
    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
  }
  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset

  //Upload new vertices
  this.vbo.update(vertices)
}

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
}

function createTextElements(plot) {
  var gl = plot.gl
  var vbo = createBuffer(gl)
  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
  var text = new TextElements(plot, vbo, shader)
  return text
}

},{"./shaders":92,"binary-search-bounds":94,"gl-buffer":73,"gl-shader":95,"text-cache":198}],94:[function(require,module,exports){
arguments[4][47][0].apply(exports,arguments)
},{"dup":47}],95:[function(require,module,exports){
'use strict'

var createUniformWrapper   = require('./lib/create-uniforms')
var createAttributeWrapper = require('./lib/create-attributes')
var makeReflect            = require('./lib/reflect')
var shaderCache            = require('./lib/shader-cache')
var runtime                = require('./lib/runtime-reflect')
var GLError                = require("./lib/GLError")

//Shader object
function Shader(gl) {
  this.gl         = gl
  this.gl.lastAttribCount = 0  // fixme where else should we store info, safe but not nice on the gl object

  //Default initialize these to null
  this._vref      =
  this._fref      =
  this._relink    =
  this.vertShader =
  this.fragShader =
  this.program    =
  this.attributes =
  this.uniforms   =
  this.types      = null
}

var proto = Shader.prototype

proto.bind = function() {
  if(!this.program) {
    this._relink()
  }

  // ensuring that we have the right number of enabled vertex attributes
  var i
  var newAttribCount = this.gl.getProgramParameter(this.program, this.gl.ACTIVE_ATTRIBUTES) // more robust approach
  //var newAttribCount = Object.keys(this.attributes).length // avoids the probably immaterial introspection slowdown
  var oldAttribCount = this.gl.lastAttribCount
  if(newAttribCount > oldAttribCount) {
    for(i = oldAttribCount; i < newAttribCount; i++) {
      this.gl.enableVertexAttribArray(i)
    }
  } else if(oldAttribCount > newAttribCount) {
    for(i = newAttribCount; i < oldAttribCount; i++) {
      this.gl.disableVertexAttribArray(i)
    }
  }

  this.gl.lastAttribCount = newAttribCount

  this.gl.useProgram(this.program)
}

proto.dispose = function() {

  // disabling vertex attributes so new shader starts with zero
  // and it's also useful if all shaders are disposed but the
  // gl context is reused for subsequent replotting
  var oldAttribCount = this.gl.lastAttribCount
  for (var i = 0; i < oldAttribCount; i++) {
    this.gl.disableVertexAttribArray(i)
  }
  this.gl.lastAttribCount = 0

  if(this._fref) {
    this._fref.dispose()
  }
  if(this._vref) {
    this._vref.dispose()
  }
  this.attributes =
  this.types      =
  this.vertShader =
  this.fragShader =
  this.program    =
  this._relink    =
  this._fref      =
  this._vref      = null
}

function compareAttributes(a, b) {
  if(a.name < b.name) {
    return -1
  }
  return 1
}

//Update export hook for glslify-live
proto.update = function(
    vertSource
  , fragSource
  , uniforms
  , attributes) {

  //If only one object passed, assume glslify style output
  if(!fragSource || arguments.length === 1) {
    var obj = vertSource
    vertSource = obj.vertex
    fragSource = obj.fragment
    uniforms   = obj.uniforms
    attributes = obj.attributes
  }

  var wrapper = this
  var gl      = wrapper.gl

  //Compile vertex and fragment shaders
  var pvref = wrapper._vref
  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
  if(pvref) {
    pvref.dispose()
  }
  wrapper.vertShader = wrapper._vref.shader
  var pfref = this._fref
  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
  if(pfref) {
    pfref.dispose()
  }
  wrapper.fragShader = wrapper._fref.shader

  //If uniforms/attributes is not specified, use RT reflection
  if(!uniforms || !attributes) {

    //Create initial test program
    var testProgram = gl.createProgram()
    gl.attachShader(testProgram, wrapper.fragShader)
    gl.attachShader(testProgram, wrapper.vertShader)
    gl.linkProgram(testProgram)
    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
      var errLog = gl.getProgramInfoLog(testProgram)
      throw new GLError(errLog, 'Error linking program:' + errLog)
    }

    //Load data from runtime
    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
    attributes = attributes || runtime.attributes(gl, testProgram)

    //Release test program
    gl.deleteProgram(testProgram)
  }

  //Sort attributes lexicographically
  // overrides undefined WebGL behavior for attribute locations
  attributes = attributes.slice()
  attributes.sort(compareAttributes)

  //Convert attribute types, read out locations
  var attributeUnpacked  = []
  var attributeNames     = []
  var attributeLocations = []
  var i
  for(i=0; i<attributes.length; ++i) {
    var attr = attributes[i]
    if(attr.type.indexOf('mat') >= 0) {
      var size = attr.type.charAt(attr.type.length-1)|0
      var locVector = new Array(size)
      for(var j=0; j<size; ++j) {
        locVector[j] = attributeLocations.length
        attributeNames.push(attr.name + '[' + j + ']')
        if(typeof attr.location === 'number') {
          attributeLocations.push(attr.location + j)
        } else if(Array.isArray(attr.location) &&
                  attr.location.length === size &&
                  typeof attr.location[j] === 'number') {
          attributeLocations.push(attr.location[j]|0)
        } else {
          attributeLocations.push(-1)
        }
      }
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: locVector
      })
    } else {
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: [ attributeLocations.length ]
      })
      attributeNames.push(attr.name)
      if(typeof attr.location === 'number') {
        attributeLocations.push(attr.location|0)
      } else {
        attributeLocations.push(-1)
      }
    }
  }

  //For all unspecified attributes, assign them lexicographically min attribute
  var curLocation = 0
  for(i=0; i<attributeLocations.length; ++i) {
    if(attributeLocations[i] < 0) {
      while(attributeLocations.indexOf(curLocation) >= 0) {
        curLocation += 1
      }
      attributeLocations[i] = curLocation
    }
  }

  //Rebuild program and recompute all uniform locations
  var uniformLocations = new Array(uniforms.length)
  function relink() {
    wrapper.program = shaderCache.program(
        gl
      , wrapper._vref
      , wrapper._fref
      , attributeNames
      , attributeLocations)

    for(var i=0; i<uniforms.length; ++i) {
      uniformLocations[i] = gl.getUniformLocation(
          wrapper.program
        , uniforms[i].name)
    }
  }

  //Perform initial linking, reuse program used for reflection
  relink()

  //Save relinking procedure, defer until runtime
  wrapper._relink = relink

  //Generate type info
  wrapper.types = {
    uniforms:   makeReflect(uniforms),
    attributes: makeReflect(attributes)
  }

  //Generate attribute wrappers
  wrapper.attributes = createAttributeWrapper(
      gl
    , wrapper
    , attributeUnpacked
    , attributeLocations)

  //Generate uniform wrappers
  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
      gl
    , wrapper
    , uniforms
    , uniformLocations))
}

//Compiles and links a shader program with the given attribute and vertex list
function createShader(
    gl
  , vertSource
  , fragSource
  , uniforms
  , attributes) {

  var shader = new Shader(gl)

  shader.update(
      vertSource
    , fragSource
    , uniforms
    , attributes)

  return shader
}

module.exports = createShader

},{"./lib/GLError":96,"./lib/create-attributes":97,"./lib/create-uniforms":98,"./lib/reflect":99,"./lib/runtime-reflect":100,"./lib/shader-cache":101}],96:[function(require,module,exports){
function GLError (rawError, shortMessage, longMessage) {
    this.shortMessage = shortMessage || ''
    this.longMessage = longMessage || ''
    this.rawError = rawError || ''
    this.message =
      'gl-shader: ' + (shortMessage || rawError || '') +
      (longMessage ? '\n'+longMessage : '')
    this.stack = (new Error()).stack
}
GLError.prototype = new Error
GLError.prototype.name = 'GLError'
GLError.prototype.constructor = GLError
module.exports = GLError

},{}],97:[function(require,module,exports){
'use strict'

module.exports = createAttributeWrapper

var GLError = require("./GLError")

function ShaderAttribute(
    gl
  , wrapper
  , index
  , locations
  , dimension
  , constFunc) {
  this._gl        = gl
  this._wrapper   = wrapper
  this._index     = index
  this._locations = locations
  this._dimension = dimension
  this._constFunc = constFunc
}

var proto = ShaderAttribute.prototype

proto.pointer = function setAttribPointer(
    type
  , normalized
  , stride
  , offset) {

  var self      = this
  var gl        = self._gl
  var location  = self._locations[self._index]

  gl.vertexAttribPointer(
      location
    , self._dimension
    , type || gl.FLOAT
    , !!normalized
    , stride || 0
    , offset || 0)
  gl.enableVertexAttribArray(location)
}

proto.set = function(x0, x1, x2, x3) {
  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
}

Object.defineProperty(proto, 'location', {
  get: function() {
    return this._locations[this._index]
  }
  , set: function(v) {
    if(v !== this._locations[this._index]) {
      this._locations[this._index] = v|0
      this._wrapper.program = null
    }
    return v|0
  }
})

//Adds a vector attribute to obj
function addVectorAttribute(
    gl
  , wrapper
  , index
  , locations
  , dimension
  , obj
  , name) {

  //Construct constant function
  var constFuncArgs = [ 'gl', 'v' ]
  var varNames = []
  for(var i=0; i<dimension; ++i) {
    constFuncArgs.push('x'+i)
    varNames.push('x'+i)
  }
  constFuncArgs.push(
    'if(x0.length===void 0){return gl.vertexAttrib' +
    dimension + 'f(v,' +
    varNames.join() +
    ')}else{return gl.vertexAttrib' +
    dimension +
    'fv(v,x0)}')
  var constFunc = Function.apply(null, constFuncArgs)

  //Create attribute wrapper
  var attr = new ShaderAttribute(
      gl
    , wrapper
    , index
    , locations
    , dimension
    , constFunc)

  //Create accessor
  Object.defineProperty(obj, name, {
    set: function(x) {
      gl.disableVertexAttribArray(locations[index])
      constFunc(gl, locations[index], x)
      return x
    }
    , get: function() {
      return attr
    }
    , enumerable: true
  })
}

function addMatrixAttribute(
    gl
  , wrapper
  , index
  , locations
  , dimension
  , obj
  , name) {

  var parts = new Array(dimension)
  var attrs = new Array(dimension)
  for(var i=0; i<dimension; ++i) {
    addVectorAttribute(
        gl
      , wrapper
      , index[i]
      , locations
      , dimension
      , parts
      , i)
    attrs[i] = parts[i]
  }

  Object.defineProperty(parts, 'location', {
    set: function(v) {
      if(Array.isArray(v)) {
        for(var i=0; i<dimension; ++i) {
          attrs[i].location = v[i]
        }
      } else {
        for(var i=0; i<dimension; ++i) {
          attrs[i].location = v + i
        }
      }
      return v
    }
    , get: function() {
      var result = new Array(dimension)
      for(var i=0; i<dimension; ++i) {
        result[i] = locations[index[i]]
      }
      return result
    }
    , enumerable: true
  })

  parts.pointer = function(type, normalized, stride, offset) {
    type       = type || gl.FLOAT
    normalized = !!normalized
    stride     = stride || (dimension * dimension)
    offset     = offset || 0
    for(var i=0; i<dimension; ++i) {
      var location = locations[index[i]]
      gl.vertexAttribPointer(
            location
          , dimension
          , type
          , normalized
          , stride
          , offset + i * dimension)
      gl.enableVertexAttribArray(location)
    }
  }

  var scratch = new Array(dimension)
  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']

  Object.defineProperty(obj, name, {
    set: function(x) {
      for(var i=0; i<dimension; ++i) {
        var loc = locations[index[i]]
        gl.disableVertexAttribArray(loc)
        if(Array.isArray(x[0])) {
          vertexAttrib.call(gl, loc, x[i])
        } else {
          for(var j=0; j<dimension; ++j) {
            scratch[j] = x[dimension*i + j]
          }
          vertexAttrib.call(gl, loc, scratch)
        }
      }
      return x
    }
    , get: function() {
      return parts
    }
    , enumerable: true
  })
}

//Create shims for attributes
function createAttributeWrapper(
    gl
  , wrapper
  , attributes
  , locations) {

  var obj = {}
  for(var i=0, n=attributes.length; i<n; ++i) {

    var a = attributes[i]
    var name = a.name
    var type = a.type
    var locs = a.locations

    switch(type) {
      case 'bool':
      case 'int':
      case 'float':
        addVectorAttribute(
            gl
          , wrapper
          , locs[0]
          , locations
          , 1
          , obj
          , name)
      break

      default:
        if(type.indexOf('vec') >= 0) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
          }
          addVectorAttribute(
              gl
            , wrapper
            , locs[0]
            , locations
            , d
            , obj
            , name)
        } else if(type.indexOf('mat') >= 0) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
          }
          addMatrixAttribute(
              gl
            , wrapper
            , locs
            , locations
            , d
            , obj
            , name)
        } else {
          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
        }
      break
    }
  }
  return obj
}

},{"./GLError":96}],98:[function(require,module,exports){
'use strict'

var coallesceUniforms = require('./reflect')
var GLError = require("./GLError")

module.exports = createUniformWrapper

//Binds a function and returns a value
function identity(x) {
  var c = new Function('y', 'return function(){return y}')
  return c(x)
}

function makeVector(length, fill) {
  var result = new Array(length)
  for(var i=0; i<length; ++i) {
    result[i] = fill
  }
  return result
}

//Create shims for uniforms
function createUniformWrapper(gl, wrapper, uniforms, locations) {

  function makeGetter(index) {
    var proc = new Function(
        'gl'
      , 'wrapper'
      , 'locations'
      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
    return proc(gl, wrapper, locations)
  }

  function makePropSetter(path, index, type) {
    switch(type) {
      case 'bool':
      case 'int':
      case 'sampler2D':
      case 'samplerCube':
        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
      case 'float':
        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
      default:
        var vidx = type.indexOf('vec')
        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type')
          }
          switch(type.charAt(0)) {
            case 'b':
            case 'i':
              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
            case 'v':
              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
            default:
              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
          }
        } else if(type.indexOf('mat') === 0 && type.length === 4) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
          }
          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
        } else {
          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
        }
      break
    }
  }

  function enumerateIndices(prefix, type) {
    if(typeof type !== 'object') {
      return [ [prefix, type] ]
    }
    var indices = []
    for(var id in type) {
      var prop = type[id]
      var tprefix = prefix
      if(parseInt(id) + '' === id) {
        tprefix += '[' + id + ']'
      } else {
        tprefix += '.' + id
      }
      if(typeof prop === 'object') {
        indices.push.apply(indices, enumerateIndices(tprefix, prop))
      } else {
        indices.push([tprefix, prop])
      }
    }
    return indices
  }

  function makeSetter(type) {
    var code = [ 'return function updateProperty(obj){' ]
    var indices = enumerateIndices('', type)
    for(var i=0; i<indices.length; ++i) {
      var item = indices[i]
      var path = item[0]
      var idx  = item[1]
      if(locations[idx]) {
        code.push(makePropSetter(path, idx, uniforms[idx].type))
      }
    }
    code.push('return obj}')
    var proc = new Function('gl', 'locations', code.join('\n'))
    return proc(gl, locations)
  }

  function defaultValue(type) {
    switch(type) {
      case 'bool':
        return false
      case 'int':
      case 'sampler2D':
      case 'samplerCube':
        return 0
      case 'float':
        return 0.0
      default:
        var vidx = type.indexOf('vec')
        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type')
          }
          if(type.charAt(0) === 'b') {
            return makeVector(d, false)
          }
          return makeVector(d, 0)
        } else if(type.indexOf('mat') === 0 && type.length === 4) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
          }
          return makeVector(d*d, 0)
        } else {
          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
        }
      break
    }
  }

  function storeProperty(obj, prop, type) {
    if(typeof type === 'object') {
      var child = processObject(type)
      Object.defineProperty(obj, prop, {
        get: identity(child),
        set: makeSetter(type),
        enumerable: true,
        configurable: false
      })
    } else {
      if(locations[type]) {
        Object.defineProperty(obj, prop, {
          get: makeGetter(type),
          set: makeSetter(type),
          enumerable: true,
          configurable: false
        })
      } else {
        obj[prop] = defaultValue(uniforms[type].type)
      }
    }
  }

  function processObject(obj) {
    var result
    if(Array.isArray(obj)) {
      result = new Array(obj.length)
      for(var i=0; i<obj.length; ++i) {
        storeProperty(result, i, obj[i])
      }
    } else {
      result = {}
      for(var id in obj) {
        storeProperty(result, id, obj[id])
      }
    }
    return result
  }

  //Return data
  var coallesced = coallesceUniforms(uniforms, true)
  return {
    get: identity(processObject(coallesced)),
    set: makeSetter(coallesced),
    enumerable: true,
    configurable: true
  }
}

},{"./GLError":96,"./reflect":99}],99:[function(require,module,exports){
'use strict'

module.exports = makeReflectTypes

//Construct type info for reflection.
//
// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
//
// The leaves of the resulting object are either indices or type strings representing primitive glslify types
function makeReflectTypes(uniforms, useIndex) {
  var obj = {}
  for(var i=0; i<uniforms.length; ++i) {
    var n = uniforms[i].name
    var parts = n.split(".")
    var o = obj
    for(var j=0; j<parts.length; ++j) {
      var x = parts[j].split("[")
      if(x.length > 1) {
        if(!(x[0] in o)) {
          o[x[0]] = []
        }
        o = o[x[0]]
        for(var k=1; k<x.length; ++k) {
          var y = parseInt(x[k])
          if(k<x.length-1 || j<parts.length-1) {
            if(!(y in o)) {
              if(k < x.length-1) {
                o[y] = []
              } else {
                o[y] = {}
              }
            }
            o = o[y]
          } else {
            if(useIndex) {
              o[y] = i
            } else {
              o[y] = uniforms[i].type
            }
          }
        }
      } else if(j < parts.length-1) {
        if(!(x[0] in o)) {
          o[x[0]] = {}
        }
        o = o[x[0]]
      } else {
        if(useIndex) {
          o[x[0]] = i
        } else {
          o[x[0]] = uniforms[i].type
        }
      }
    }
  }
  return obj
}
},{}],100:[function(require,module,exports){
'use strict'

exports.uniforms    = runtimeUniforms
exports.attributes  = runtimeAttributes

var GL_TO_GLSL_TYPES = {
  'FLOAT':       'float',
  'FLOAT_VEC2':  'vec2',
  'FLOAT_VEC3':  'vec3',
  'FLOAT_VEC4':  'vec4',
  'INT':         'int',
  'INT_VEC2':    'ivec2',
  'INT_VEC3':    'ivec3',
  'INT_VEC4':    'ivec4',
  'BOOL':        'bool',
  'BOOL_VEC2':   'bvec2',
  'BOOL_VEC3':   'bvec3',
  'BOOL_VEC4':   'bvec4',
  'FLOAT_MAT2':  'mat2',
  'FLOAT_MAT3':  'mat3',
  'FLOAT_MAT4':  'mat4',
  'SAMPLER_2D':  'sampler2D',
  'SAMPLER_CUBE':'samplerCube'
}

var GL_TABLE = null

function getType(gl, type) {
  if(!GL_TABLE) {
    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
    GL_TABLE = {}
    for(var i=0; i<typeNames.length; ++i) {
      var tn = typeNames[i]
      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
    }
  }
  return GL_TABLE[type]
}

function runtimeUniforms(gl, program) {
  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
  var result = []
  for(var i=0; i<numUniforms; ++i) {
    var info = gl.getActiveUniform(program, i)
    if(info) {
      var type = getType(gl, info.type)
      if(info.size > 1) {
        for(var j=0; j<info.size; ++j) {
          result.push({
            name: info.name.replace('[0]', '[' + j + ']'),
            type: type
          })
        }
      } else {
        result.push({
          name: info.name,
          type: type
        })
      }
    }
  }
  return result
}

function runtimeAttributes(gl, program) {
  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
  var result = []
  for(var i=0; i<numAttributes; ++i) {
    var info = gl.getActiveAttrib(program, i)
    if(info) {
      result.push({
        name: info.name,
        type: getType(gl, info.type)
      })
    }
  }
  return result
}

},{}],101:[function(require,module,exports){
'use strict'

exports.shader   = getShaderReference
exports.program  = createProgram

var GLError = require("./GLError")
var formatCompilerError = require('gl-format-compiler-error');

var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
var CACHE = new weakMap()

var SHADER_COUNTER = 0

function ShaderReference(id, src, type, shader, programs, count, cache) {
  this.id       = id
  this.src      = src
  this.type     = type
  this.shader   = shader
  this.count    = count
  this.programs = []
  this.cache    = cache
}

ShaderReference.prototype.dispose = function() {
  if(--this.count === 0) {
    var cache    = this.cache
    var gl       = cache.gl

    //Remove program references
    var programs = this.programs
    for(var i=0, n=programs.length; i<n; ++i) {
      var p = cache.programs[programs[i]]
      if(p) {
        delete cache.programs[i]
        gl.deleteProgram(p)
      }
    }

    //Remove shader reference
    gl.deleteShader(this.shader)
    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
  }
}

function ContextCache(gl) {
  this.gl       = gl
  this.shaders  = [{}, {}]
  this.programs = {}
}

var proto = ContextCache.prototype

function compileShader(gl, type, src) {
  var shader = gl.createShader(type)
  gl.shaderSource(shader, src)
  gl.compileShader(shader)
  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
    var errLog = gl.getShaderInfoLog(shader)
    try {
        var fmt = formatCompilerError(errLog, src, type);
    } catch (e){
        console.warn('Failed to format compiler error: ' + e);
        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
    }
    throw new GLError(errLog, fmt.short, fmt.long)
  }
  return shader
}

proto.getShaderReference = function(type, src) {
  var gl      = this.gl
  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
  var shader  = shaders[src]
  if(!shader || !gl.isShader(shader.shader)) {
    var shaderObj = compileShader(gl, type, src)
    shader = shaders[src] = new ShaderReference(
      SHADER_COUNTER++,
      src,
      type,
      shaderObj,
      [],
      1,
      this)
  } else {
    shader.count += 1
  }
  return shader
}

function linkProgram(gl, vshader, fshader, attribs, locations) {
  var program = gl.createProgram()
  gl.attachShader(program, vshader)
  gl.attachShader(program, fshader)
  for(var i=0; i<attribs.length; ++i) {
    gl.bindAttribLocation(program, locations[i], attribs[i])
  }
  gl.linkProgram(program)
  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
    var errLog = gl.getProgramInfoLog(program)
    throw new GLError(errLog, 'Error linking program: ' + errLog)
  }
  return program
}

proto.getProgram = function(vref, fref, attribs, locations) {
  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
  var prog  = this.programs[token]
  if(!prog || !this.gl.isProgram(prog)) {
    this.programs[token] = prog = linkProgram(
      this.gl,
      vref.shader,
      fref.shader,
      attribs,
      locations)
    vref.programs.push(token)
    fref.programs.push(token)
  }
  return prog
}

function getCache(gl) {
  var ctxCache = CACHE.get(gl)
  if(!ctxCache) {
    ctxCache = new ContextCache(gl)
    CACHE.set(gl, ctxCache)
  }
  return ctxCache
}

function getShaderReference(gl, type, src) {
  return getCache(gl).getShaderReference(type, src)
}

function createProgram(gl, vref, fref, attribs, locations) {
  return getCache(gl).getProgram(vref, fref, attribs, locations)
}

},{"./GLError":96,"gl-format-compiler-error":82,"weakmap-shim":212}],102:[function(require,module,exports){
'use strict'

module.exports = createGLPlot2D

var createPick = require('gl-select-static')

var createGrid = require('./lib/grid')
var createText = require('./lib/text')
var createLine = require('./lib/line')
var createBox  = require('./lib/box')

function GLPlot2D(gl, pickBuffer) {
  this.gl               = gl
  this.pickBuffer       = pickBuffer

  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
  this.viewBox          = [0, 0, 0, 0]
  this.dataBox          = [-10, -10, 10, 10]

  this.gridLineEnable   = [true,true]
  this.gridLineWidth    = [1,1]
  this.gridLineColor    = [[0,0,0,1],
                           [0,0,0,1]]

  this.pixelRatio       = 1

  this.tickMarkLength   = [0,0,0,0]
  this.tickMarkWidth    = [0,0,0,0]
  this.tickMarkColor    = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  this.tickPad          = [15,15,15,15]
  this.tickAngle        = [0,0,0,0]
  this.tickEnable       = [true,true,true,true]
  this.tickColor        = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  this.labelPad         = [15,15,15,15]
  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
  this.labelEnable      = [true,true,true,true]
  this.labelColor       = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  this.titleCenter      = [0,0]
  this.titleEnable      = true
  this.titleAngle       = 0
  this.titleColor       = [0,0,0,1]

  this.borderColor      = [0,0,0,0]
  this.backgroundColor  = [0,0,0,0]

  this.zeroLineEnable   = [true, true]
  this.zeroLineWidth    = [4, 4]
  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]

  this.borderLineEnable = [true,true,true,true]
  this.borderLineWidth  = [2,2,2,2]
  this.borderLineColor  = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  //Drawing parameters
  this.grid             = null
  this.text             = null
  this.line             = null
  this.box              = null
  this.objects          = []
  this.overlays         = []

  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]

  this.static = false

  this.dirty        = false
  this.pickDirty    = false
  this.pickDelay    = 120
  this.pickRadius   = 10
  this._pickTimeout = null
  this._drawPick    = this.drawPick.bind(this)

  this._depthCounter = 0
}

var proto = GLPlot2D.prototype

proto.setDirty = function() {
  this.dirty = this.pickDirty = true
}

proto.setOverlayDirty = function() {
  this.dirty = true
}

proto.nextDepthValue = function() {
  return (this._depthCounter++) / 65536.0
}

function lerp(a, b, t) {
  var s = 0.5 * (t + 1.0)
  return Math.floor((1.0-s)*a + s*b)|0
}

proto.draw = (function() {
var TICK_MARK_BOX = [0,0,0,0]
return function() {
  var gl         = this.gl
  var screenBox  = this.screenBox
  var viewPixels = this.viewBox
  var dataBox    = this.dataBox
  var pixelRatio = this.pixelRatio
  var grid       = this.grid
  var line       = this.line
  var text       = this.text
  var objects    = this.objects

  this._depthCounter = 0

  if(this.pickDirty) {
    if(this._pickTimeout) {
      clearTimeout(this._pickTimeout)
    }
    this.pickDirty = false
    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
  }

  if(!this.dirty) {
    return
  }
  this.dirty = false

  gl.bindFramebuffer(gl.FRAMEBUFFER, null)

  //Turn on scissor
  gl.enable(gl.SCISSOR_TEST)

  //Turn off depth buffer
  gl.disable(gl.DEPTH_TEST)
  gl.depthFunc(gl.LESS)
  gl.depthMask(false)

  //Configure premultiplied alpha blending
  gl.enable(gl.BLEND)
  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);

  //Draw border
  gl.scissor(
    screenBox[0],
    screenBox[1],
    screenBox[2]-screenBox[0],
    screenBox[3]-screenBox[1])
  var borderColor = this.borderColor
  gl.clearColor(
    borderColor[0]*borderColor[3],
    borderColor[1]*borderColor[3],
    borderColor[2]*borderColor[3],
    borderColor[3])
  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

  //Draw center pane
  gl.scissor(
    viewPixels[0],
    viewPixels[1],
    viewPixels[2]-viewPixels[0],
    viewPixels[3]-viewPixels[1])
  gl.viewport(
    viewPixels[0],
    viewPixels[1],
    viewPixels[2]-viewPixels[0],
    viewPixels[3]-viewPixels[1])
  var backgroundColor = this.backgroundColor
  gl.clearColor(
    backgroundColor[0]*backgroundColor[3],
    backgroundColor[1]*backgroundColor[3],
    backgroundColor[2]*backgroundColor[3],
    backgroundColor[3])
  gl.clear(gl.COLOR_BUFFER_BIT)

  //Draw grid
  grid.draw()

  //Draw zero lines separately
  var zeroLineEnable = this.zeroLineEnable
  var zeroLineColor  = this.zeroLineColor
  var zeroLineWidth  = this.zeroLineWidth
  if(zeroLineEnable[0] || zeroLineEnable[1]) {
    line.bind()
    for(var i=0; i<2; ++i) {
      if(!zeroLineEnable[i] ||
        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
        continue
      }

      var zeroIntercept = screenBox[i] -
        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])

      if(i === 0) {
        line.drawLine(
          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
          zeroLineWidth[i],
          zeroLineColor[i])
      } else {
        line.drawLine(
          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
          zeroLineWidth[i],
          zeroLineColor[i])
      }
    }
  }

  //Draw traces
  for(var i=0; i<objects.length; ++i) {
    objects[i].draw()
  }

  //Return viewport to default
  gl.viewport(
    screenBox[0],
    screenBox[1],
    screenBox[2]-screenBox[0],
    screenBox[3]-screenBox[1])
  gl.scissor(
    screenBox[0],
    screenBox[1],
    screenBox[2]-screenBox[0],
    screenBox[3]-screenBox[1])

  //Draw tick marks
  this.grid.drawTickMarks()

  //Draw line elements
  line.bind()

  //Draw border lines
  var borderLineEnable = this.borderLineEnable
  var borderLineWidth  = this.borderLineWidth
  var borderLineColor  = this.borderLineColor
  if(borderLineEnable[1]) {
    line.drawLine(
      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
      borderLineWidth[1], borderLineColor[1])
  }
  if(borderLineEnable[0]) {
    line.drawLine(
      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
      borderLineWidth[0], borderLineColor[0])
  }
  if(borderLineEnable[3]) {
    line.drawLine(
      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
      borderLineWidth[3], borderLineColor[3])
  }
  if(borderLineEnable[2]) {
    line.drawLine(
      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
      borderLineWidth[2], borderLineColor[2])
  }

  //Draw text elements
  text.bind()
  for(var i=0; i<2; ++i) {
    text.drawTicks(i)
  }
  if(this.titleEnable) {
    text.drawTitle()
  }

  //Draw other overlay elements (select boxes, etc.)
  var overlays = this.overlays
  for(var i=0; i<overlays.length; ++i) {
    overlays[i].draw()
  }

  //Turn off scissor test
  gl.disable(gl.SCISSOR_TEST)
  gl.disable(gl.BLEND)
  gl.depthMask(true)
}
})()

proto.drawPick = (function() {

return function() {
  if (this.static) return;

  var pickBuffer = this.pickBuffer
  var gl = this.gl

  this._pickTimeout = null
  pickBuffer.begin()

  var pickOffset = 1
  var objects = this.objects
  for(var i=0; i<objects.length; ++i) {
    pickOffset = objects[i].drawPick(pickOffset)
  }

  pickBuffer.end()
}
})()

proto.pick = (function() {
return function(x, y) {
  if (this.static) return;

  var pixelRatio     = this.pixelRatio
  var pickPixelRatio = this.pickPixelRatio
  var viewBox        = this.viewBox

  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0

  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
  if(!pickResult) {
    return null
  }

  var pickValue = pickResult.id +
    (pickResult.value[0]<<8)  +
    (pickResult.value[1]<<16) +
    (pickResult.value[2]<<24)

  var objects = this.objects
  for(var i=0; i<objects.length; ++i) {
    var result = objects[i].pick(scrX, scrY, pickValue)
    if(result) {
      return result
    }
  }

  return null
}
})()

function deepClone(array) {
  var result = array.slice()
  for(var i=0; i<result.length; ++i) {
    result[i] = result[i].slice()
  }
  return result
}

function compareTicks(a, b) {
  return a.x - b.x
}

proto.setScreenBox = function(nbox) {
  var screenBox = this.screenBox
  var pixelRatio = this.pixelRatio

  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0

  this.setDirty()
}

proto.setDataBox = function(nbox) {
  var dataBox = this.dataBox

  var different =
    dataBox[0] !== nbox[0] ||
    dataBox[1] !== nbox[1] ||
    dataBox[2] !== nbox[2] ||
    dataBox[3] !== nbox[3]

  if(different) {
    dataBox[0] = nbox[0]
    dataBox[1] = nbox[1]
    dataBox[2] = nbox[2]
    dataBox[3] = nbox[3]

    this.setDirty()
  }
}

proto.setViewBox = function(nbox) {
  var pixelRatio = this.pixelRatio
  var viewBox = this.viewBox

  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0

  var pickPixelRatio = this.pickPixelRatio
  this.pickBuffer.shape = [
    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]

  this.setDirty()
}

proto.update = function(options) {
  options = options || {}

  var gl = this.gl

  this.pixelRatio      = options.pixelRatio || 1

  var pixelRatio       = this.pixelRatio
  this.pickPixelRatio  = Math.max(pixelRatio, 1)

  this.setScreenBox(options.screenBox ||
    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])

  var screenBox = this.screenBox
  this.setViewBox(options.viewBox ||
    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])

  var viewBox = this.viewBox
  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])

  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()

  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
  this.gridLineColor   = deepClone(options.gridLineColor ||
    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])

  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
  this.zeroLineColor    = deepClone(options.zeroLineColor ||
    [[0, 0, 0, 1],[0, 0, 0, 1]])

  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
  this.tickMarkColor    = deepClone(options.tickMarkColor ||
    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])

  this.titleCenter      = (options.titleCenter || [
    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
  this.titleAngle       = options.titleAngle || 0
  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()

  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
  this.labelAngle       = (options.labelAngle ||
    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
  this.labelColor       = deepClone(options.labelColor ||
    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])

  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
  this.tickColor       = deepClone(options.tickColor ||
    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])

  this.borderLineEnable = (options.borderLineEnable ||
                            [true,true,true,true]).slice()
  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
  this.borderLineColor  = deepClone(options.borderLineColor ||
                          [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]])

  var ticks = options.ticks || [ [], [] ]

  //Compute bounds on ticks
  var bounds = this._tickBounds
  bounds[0] = bounds[1] =  Infinity
  bounds[2] = bounds[3] = -Infinity
  for(var i=0; i<2; ++i) {
    var axisTicks = ticks[i].slice(0)
    if(axisTicks.length === 0) {
      continue
    }
    axisTicks.sort(compareTicks)
    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
  }

  //Update grid
  this.grid.update({
    bounds: bounds,
    ticks:  ticks
  })

  //Update text
  this.text.update({
    bounds:     bounds,
    ticks:      ticks,
    labels:     options.labels    || ['x', 'y'],
    labelSize:  options.labelSize || [12,12],
    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
    title:      options.title     || '',
    titleSize:  options.titleSize || 18,
    titleFont:  options.titleFont || 'sans-serif'
  })

  this.static = !!options.static;

  this.setDirty()
}

proto.dispose = function() {
  this.box.dispose()
  this.grid.dispose()
  this.text.dispose()
  this.line.dispose()
  for(var i=this.objects.length-1; i>=0; --i) {
    this.objects[i].dispose()
  }
  this.objects.length = 0
  for(var i=this.overlays.length-1; i>=0; --i) {
    this.overlays[i].dispose()
  }
  this.overlays.length = 0

  this.gl = null
}

proto.addObject = function(object) {
  if(this.objects.indexOf(object) < 0) {
    this.objects.push(object)
    this.setDirty()
  }
}

proto.removeObject = function(object) {
  var objects = this.objects
  for(var i=0; i<objects.length; ++i) {
    if(objects[i] === object) {
      objects.splice(i,1)
      this.setDirty()
      break
    }
  }
}

proto.addOverlay = function(object) {
  if(this.overlays.indexOf(object) < 0) {
    this.overlays.push(object)
    this.setOverlayDirty()
  }
}

proto.removeOverlay = function(object) {
  var objects = this.overlays
  for(var i=0; i<objects.length; ++i) {
    if(objects[i] === object) {
      objects.splice(i,1)
      this.setOverlayDirty()
      break
    }
  }
}

function createGLPlot2D(options) {
  var gl = options.gl
  var pickBuffer = createPick(gl, [
    gl.drawingBufferWidth, gl.drawingBufferHeight])
  var plot = new GLPlot2D(gl, pickBuffer)
  plot.grid = createGrid(plot)
  plot.text = createText(plot)
  plot.line = createLine(plot)
  plot.box  = createBox(plot)
  plot.update(options)
  return plot
}

},{"./lib/box":89,"./lib/grid":90,"./lib/line":91,"./lib/text":93,"gl-select-static":131}],103:[function(require,module,exports){


exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform float pointCloud;\n\nhighp float rand(vec2 co) {\n  highp float a = 12.9898;\n  highp float b = 78.233;\n  highp float c = 43758.5453;\n  highp float d = dot(co.xy, vec2(a, b));\n  highp float e = mod(d, 3.14);\n  return fract(sin(e) * c);\n}\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n    // if we don't jitter the point size a bit, overall point cloud\n    // saturation 'jumps' on zooming, which is disturbing and confusing\n  gl_PointSize = pointSize * ((19.5 + rand(position)) / 20.0);\n  if(pointCloud != 0.0) { // pointCloud is truthy\n    // get the same square surface as circle would be\n    gl_PointSize *= 0.886;\n  }\n}"
exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\nuniform float pointCloud;\n\nvoid main() {\n  float radius;\n  vec4 baseColor;\n  if(pointCloud != 0.0) { // pointCloud is truthy\n    if(centerFraction == 1.0) {\n      gl_FragColor = color;\n    } else {\n      gl_FragColor = mix(borderColor, color, centerFraction);\n    }\n  } else {\n    radius = length(2.0 * gl_PointCoord.xy - 1.0);\n    if(radius > 1.0) {\n      discard;\n    }\n    baseColor = mix(borderColor, color, step(radius, centerFraction));\n    gl_FragColor = vec4(baseColor.rgb * baseColor.a, baseColor.a);\n  }\n}\n"
exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0 * gl_PointCoord.xy - 1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"

},{}],104:[function(require,module,exports){
arguments[4][95][0].apply(exports,arguments)
},{"./lib/GLError":105,"./lib/create-attributes":106,"./lib/create-uniforms":107,"./lib/reflect":108,"./lib/runtime-reflect":109,"./lib/shader-cache":110,"dup":95}],105:[function(require,module,exports){
arguments[4][96][0].apply(exports,arguments)
},{"dup":96}],106:[function(require,module,exports){
arguments[4][97][0].apply(exports,arguments)
},{"./GLError":105,"dup":97}],107:[function(require,module,exports){
arguments[4][98][0].apply(exports,arguments)
},{"./GLError":105,"./reflect":108,"dup":98}],108:[function(require,module,exports){
arguments[4][99][0].apply(exports,arguments)
},{"dup":99}],109:[function(require,module,exports){
arguments[4][100][0].apply(exports,arguments)
},{"dup":100}],110:[function(require,module,exports){
arguments[4][101][0].apply(exports,arguments)
},{"./GLError":105,"dup":101,"gl-format-compiler-error":82,"weakmap-shim":212}],111:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')

var pool = require('typedarray-pool')

var SHADERS = require('./lib/shader')

module.exports = createPointcloud2D

function Pointcloud2D(plot, offsetBuffer, pickBuffer, shader, pickShader) {
  this.plot           = plot
  this.offsetBuffer   = offsetBuffer
  this.pickBuffer     = pickBuffer
  this.shader         = shader
  this.pickShader     = pickShader
  this.sizeMin        = 0.5
  this.sizeMinCap     = 2
  this.sizeMax        = 20
  this.areaRatio      = 1.0
  this.pointCount     = 0
  this.color          = [1, 0, 0, 1]
  this.borderColor    = [0, 0, 0, 1]
  this.blend          = false
  this.pickOffset     = 0
  this.points         = null
}

var proto = Pointcloud2D.prototype

proto.dispose = function() {
  this.shader.dispose()
  this.pickShader.dispose()
  this.offsetBuffer.dispose()
  this.pickBuffer.dispose()
  this.plot.removeObject(this)
}

proto.update = function(options) {

  var i

  options = options || {}

  function dflt(opt, value) {
    if(opt in options) {
      return options[opt]
    }
    return value
  }

  this.sizeMin      = dflt('sizeMin', 0.5)
  this.sizeMax      = dflt('sizeMax', 20)
  this.color        = dflt('color', [1, 0, 0, 1]).slice()
  this.areaRatio    = dflt('areaRatio', 1)
  this.borderColor  = dflt('borderColor', [0, 0, 0, 1]).slice()
  this.blend        = dflt('blend', false)

  //Update point data

  // Attempt straight-through processing (STP) to avoid allocation and copy
  // TODO eventually abstract out STP logic, maybe into `pool` or a layer above
  var pointCount = options.positions.length >>> 1
  var dataStraightThrough = options.positions instanceof Float32Array
  var idStraightThrough = options.idToIndex instanceof Int32Array && options.idToIndex.length >= pointCount // permit larger to help reuse

  var data          = options.positions
  var packed        = dataStraightThrough ? data : pool.mallocFloat32(data.length)
  var packedId      = idStraightThrough ? options.idToIndex : pool.mallocInt32(pointCount)

  if(!dataStraightThrough) {
    packed.set(data)
  }

  if(!idStraightThrough) {
    packed.set(data)
    for(i = 0; i < pointCount; i++) {
      packedId[i] = i
    }
  }

  this.points       = data

  this.offsetBuffer.update(packed)
  this.pickBuffer.update(packedId)

  if(!dataStraightThrough) {
    pool.free(packed)
  }

  if(!idStraightThrough) {
    pool.free(packedId)
  }

  this.pointCount = pointCount
  this.pickOffset = 0
}

function count(points, dataBox) {
  var visiblePointCountEstimate = 0
  var length = points.length >>> 1
  var i
  for(i = 0; i < length; i++) {
    var x = points[i * 2]
    var y = points[i * 2 + 1]
    if(x >= dataBox[0] && x <= dataBox[2] && y >= dataBox[1] && y <= dataBox[3])
      visiblePointCountEstimate++
  }
  return visiblePointCountEstimate
}

proto.unifiedDraw = (function() {
  var MATRIX = [1, 0, 0,
                0, 1, 0,
                0, 0, 1]
  var PICK_VEC4 = [0, 0, 0, 0]
return function(pickOffset) {

  var pick = pickOffset !== void(0)

  var shader        = pick ? this.pickShader : this.shader
  var gl            = this.plot.gl
  var dataBox       = this.plot.dataBox

  if(this.pointCount === 0) {
    return pickOffset
  }

  var dataX   = dataBox[2] - dataBox[0]
  var dataY   = dataBox[3] - dataBox[1]

  var visiblePointCountEstimate = count(this.points, dataBox)
  var basicPointSize =  this.plot.pickPixelRatio * Math.max(Math.min(this.sizeMinCap, this.sizeMin), Math.min(this.sizeMax, this.sizeMax / Math.pow(visiblePointCountEstimate, 0.33333)))

  MATRIX[0] = 2.0 / dataX
  MATRIX[4] = 2.0 / dataY
  MATRIX[6] = -2.0 * dataBox[0] / dataX - 1.0
  MATRIX[7] = -2.0 * dataBox[1] / dataY - 1.0

  this.offsetBuffer.bind()

  shader.bind()
  shader.attributes.position.pointer()
  shader.uniforms.matrix      = MATRIX
  shader.uniforms.color       = this.color
  shader.uniforms.borderColor = this.borderColor
  shader.uniforms.pointCloud = basicPointSize < 5
  shader.uniforms.pointSize = basicPointSize
  shader.uniforms.centerFraction = Math.min(1, Math.max(0, Math.sqrt(1 - this.areaRatio)))

  if(pick) {

    PICK_VEC4[0] = ( pickOffset        & 0xff)
    PICK_VEC4[1] = ((pickOffset >> 8)  & 0xff)
    PICK_VEC4[2] = ((pickOffset >> 16) & 0xff)
    PICK_VEC4[3] = ((pickOffset >> 24) & 0xff)

    this.pickBuffer.bind()
    shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
    shader.uniforms.pickOffset = PICK_VEC4
    this.pickOffset = pickOffset
  }

  // Worth switching these off, but we can't make assumptions about other
  // renderers, so let's restore it after each draw
  var blend = gl.getParameter(gl.BLEND)
  var dither = gl.getParameter(gl.DITHER)

  if(blend && !this.blend)
    gl.disable(gl.BLEND)
  if(dither)
    gl.disable(gl.DITHER)

  gl.drawArrays(gl.POINTS, 0, this.pointCount)

  if(blend && !this.blend)
    gl.enable(gl.BLEND)
  if(dither)
    gl.enable(gl.DITHER)

  return pickOffset + this.pointCount
}
})()

proto.draw = proto.unifiedDraw
proto.drawPick = proto.unifiedDraw

proto.pick = function(x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.pointCount
  if(value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var points = this.points
  return {
    object: this,
    pointId: pointId,
    dataCoord: [points[2 * pointId], points[2 * pointId + 1] ]
  }
}

function createPointcloud2D(plot, options) {
  var gl = plot.gl
  var buffer = createBuffer(gl)
  var pickBuffer = createBuffer(gl)
  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)

  var result = new Pointcloud2D(plot, buffer, pickBuffer, shader, pickShader)
  result.update(options)

  //Register with plot
  plot.addObject(result)

  return result
}

},{"./lib/shader":103,"gl-buffer":73,"gl-shader":104,"typedarray-pool":205}],112:[function(require,module,exports){
'use strict'



module.exports = {
  vertex:       "precision highp float;\n#define GLSLIFY 1\n\n\nvec4 computePosition_1_0(vec2 posHi, vec2 posLo, vec2 scHi, vec2 scLo, vec2 trHi, vec2 trLo) {\n  return vec4((posHi + trHi) * scHi\n  \t\t\t//FIXME: this thingy does not give noticeable precision gain, need test\n            + (posLo + trLo) * scHi\n            + (posHi + trHi) * scLo\n            + (posLo + trLo) * scLo\n            , 0, 1);\n}\n\n\nattribute vec2 positionHi, positionLo;\nattribute float size, border;\nattribute vec2 char, color;\n\n//this is 64-bit form of scale and translate\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo;\nuniform float pixelRatio;\nuniform vec4 viewBox;\nuniform sampler2D palette;\n\nvarying vec4 charColor, borderColor;\nvarying vec2 charId;\nvarying vec2 pointCoord;\nvarying float pointSize;\nvarying float borderWidth;\n\n\nvoid main() {\n  charColor = texture2D(palette, vec2(color.x / 255., 0));\n  borderColor = texture2D(palette, vec2(color.y / 255., 0));\n\n  gl_PointSize = size * pixelRatio;\n  pointSize = size * pixelRatio;\n\n  charId = char;\n  borderWidth = border;\n\n  gl_Position = computePosition_1_0(\n    positionHi, positionLo,\n    scaleHi, scaleLo,\n    translateHi, translateLo);\n\n  pointCoord = viewBox.xy + (viewBox.zw - viewBox.xy) * (gl_Position.xy * .5 + .5);\n}\n",
  fragment:     "precision highp float;\n#define GLSLIFY 1\n\nuniform sampler2D chars;\nuniform vec2 charsShape;\nuniform float charsStep, pixelRatio, charOffset;\n\nvarying vec4 borderColor;\nvarying vec4 charColor;\nvarying vec2 charId;\nvarying vec2 pointCoord;\nvarying float pointSize;\nvarying float borderWidth;\n\nvoid main() {\n\tvec2 pointUV = (pointCoord - gl_FragCoord.xy + pointSize * .5) / pointSize;\n\tpointUV.x = 1. - pointUV.x;\n\tvec2 texCoord = ((charId + pointUV) * charsStep) / charsShape;\n\tfloat dist = texture2D(chars, texCoord).r;\n\n\t//max-distance alpha\n\tif (dist < 1e-2)\n\t\tdiscard;\n\n\tfloat gamma = .0045 * charsStep / pointSize;\n\n    //null-border case\n \tif (borderWidth * borderColor.a == 0.) {\n\t\tfloat charAmt = smoothstep(.748 - gamma, .748 + gamma, dist);\n\t\tgl_FragColor = vec4(charColor.rgb, charAmt*charColor.a);\n\t\treturn;\n\t}\n\n\tfloat dif = 5. * pixelRatio * borderWidth / pointSize;\n\tfloat borderLevel = .748 - dif * .5;\n\tfloat charLevel = .748 + dif * .5;\n\n\tfloat borderAmt = smoothstep(borderLevel - gamma, borderLevel + gamma, dist);\n\tfloat charAmt = smoothstep(charLevel - gamma, charLevel + gamma, dist);\n\n\tvec4 color = borderColor;\n\tcolor.a *= borderAmt;\n\n\tgl_FragColor = mix(color, charColor, charAmt);\n}\n",
  pickVertex:   "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi, positionLo;\nattribute vec4 id;\nattribute float size;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo;\nuniform vec4 pickOffset;\nuniform float pixelRatio;\n\nvarying vec4 fragColor;\n\n\nvec4 computePosition_1_0(vec2 posHi, vec2 posLo, vec2 scHi, vec2 scLo, vec2 trHi, vec2 trLo) {\n  return vec4((posHi + trHi) * scHi\n  \t\t\t//FIXME: this thingy does not give noticeable precision gain, need test\n            + (posLo + trLo) * scHi\n            + (posHi + trHi) * scLo\n            + (posLo + trLo) * scLo\n            , 0, 1);\n}\n\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_PointSize = size * .25 * pixelRatio;\n\n  gl_Position = computePosition_1_0(\n    positionHi, positionLo,\n    scaleHi, scaleLo,\n    translateHi, translateLo);\n}\n",
  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
}

},{}],113:[function(require,module,exports){
arguments[4][47][0].apply(exports,arguments)
},{"dup":47}],114:[function(require,module,exports){
arguments[4][95][0].apply(exports,arguments)
},{"./lib/GLError":115,"./lib/create-attributes":116,"./lib/create-uniforms":117,"./lib/reflect":118,"./lib/runtime-reflect":119,"./lib/shader-cache":120,"dup":95}],115:[function(require,module,exports){
arguments[4][96][0].apply(exports,arguments)
},{"dup":96}],116:[function(require,module,exports){
arguments[4][97][0].apply(exports,arguments)
},{"./GLError":115,"dup":97}],117:[function(require,module,exports){
arguments[4][98][0].apply(exports,arguments)
},{"./GLError":115,"./reflect":118,"dup":98}],118:[function(require,module,exports){
arguments[4][99][0].apply(exports,arguments)
},{"dup":99}],119:[function(require,module,exports){
arguments[4][100][0].apply(exports,arguments)
},{"dup":100}],120:[function(require,module,exports){
arguments[4][101][0].apply(exports,arguments)
},{"./GLError":115,"dup":101,"gl-format-compiler-error":82,"weakmap-shim":212}],121:[function(require,module,exports){
'use strict'

module.exports = sortLevels

var INSERT_SORT_CUTOFF = 32

function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
  if (n0 <= 4*INSERT_SORT_CUTOFF) {
    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
  }
}

function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
  for(var i=left+1; i<=right; ++i) {
    var a_level  = data_levels[i]
    var a_x      = data_points[2*i]
    var a_y      = data_points[2*i+1]
    var a_id     = data_ids[i]
    var a_weight = data_weights[i]

    var j = i
    while(j > left) {
      var b_level = data_levels[j-1]
      var b_x     = data_points[2*(j-1)]
      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
        break
      }
      data_levels[j]      = b_level
      data_points[2*j]    = b_x
      data_points[2*j+1]  = data_points[2*j-1]
      data_ids[j]         = data_ids[j-1]
      data_weights[j]     = data_weights[j-1]
      j -= 1
    }

    data_levels[j]     = a_level
    data_points[2*j]   = a_x
    data_points[2*j+1] = a_y
    data_ids[j]        = a_id
    data_weights[j]    = a_weight
  }
}

function swap(i, j, data_levels, data_points, data_ids, data_weights) {
  var a_level = data_levels[i]
  var a_x     = data_points[2*i]
  var a_y     = data_points[2*i+1]
  var a_id    = data_ids[i]
  var a_weight = data_weights[i]

  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]

  data_levels[j]     = a_level
  data_points[2*j]   = a_x
  data_points[2*j+1] = a_y
  data_ids[j]        = a_id
  data_weights[j]    = a_weight
}

function move(i, j, data_levels, data_points, data_ids, data_weights) {
  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]
}

function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
  var a_level = data_levels[i]
  var a_x     = data_points[2*i]
  var a_y     = data_points[2*i+1]
  var a_id    = data_ids[i]
  var a_weight = data_weights[i]

  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]

  data_levels[j]     = data_levels[k]
  data_points[2*j]   = data_points[2*k]
  data_points[2*j+1] = data_points[2*k+1]
  data_ids[j]        = data_ids[k]
  data_weights[j]    = data_weights[k]

  data_levels[k]     = a_level
  data_points[2*k]   = a_x
  data_points[2*k+1] = a_y
  data_ids[k]        = a_id
  data_weights[k]    = a_weight
}

function shufflePivot(
  i, j,
  a_level, a_x, a_y, a_id, a_weight,
  data_levels, data_points, data_ids, data_weights) {

  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]

  data_levels[j]     = a_level
  data_points[2*j]   = a_x
  data_points[2*j+1] = a_y
  data_ids[j]        = a_id
  data_weights[j]    = a_weight
}

function compare(i, j, data_levels, data_points, data_ids) {
  return ((data_levels[i] - data_levels[j]) ||
          (data_points[2*j] - data_points[2*i]) ||
          (data_ids[i] - data_ids[j])) < 0
}

function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
  return ((level - data_levels[i]) ||
          (data_points[2*i] - x) ||
          (id - data_ids[i])) < 0
}

function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
  var sixth = (right - left + 1) / 6 | 0,
      index1 = left + sixth,
      index5 = right - sixth,
      index3 = left + right >> 1,
      index2 = index3 - sixth,
      index4 = index3 + sixth,
      el1 = index1,
      el2 = index2,
      el3 = index3,
      el4 = index4,
      el5 = index5,
      less = left + 1,
      great = right - 1,
      tmp = 0
  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
    tmp = el1
    el1 = el2
    el2 = tmp
  }
  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }
  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
    tmp = el1
    el1 = el3
    el3 = tmp
  }
  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
    tmp = el1
    el1 = el4
    el4 = tmp
  }
  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
    tmp = el3
    el3 = el4
    el4 = tmp
  }
  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
    tmp = el2
    el2 = el5
    el5 = tmp
  }
  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }

  var pivot1_level  = data_levels[el2]
  var pivot1_x      = data_points[2*el2]
  var pivot1_y      = data_points[2*el2+1]
  var pivot1_id     = data_ids[el2]
  var pivot1_weight = data_weights[el2]

  var pivot2_level  = data_levels[el4]
  var pivot2_x      = data_points[2*el4]
  var pivot2_y      = data_points[2*el4+1]
  var pivot2_id     = data_ids[el4]
  var pivot2_weight = data_weights[el4]

  var ptr0 = el1
  var ptr2 = el3
  var ptr4 = el5
  var ptr5 = index1
  var ptr6 = index3
  var ptr7 = index5

  var level_x = data_levels[ptr0]
  var level_y = data_levels[ptr2]
  var level_z = data_levels[ptr4]
  data_levels[ptr5] = level_x
  data_levels[ptr6] = level_y
  data_levels[ptr7] = level_z

  for (var i1 = 0; i1 < 2; ++i1) {
    var x = data_points[2*ptr0+i1]
    var y = data_points[2*ptr2+i1]
    var z = data_points[2*ptr4+i1]
    data_points[2*ptr5+i1] = x
    data_points[2*ptr6+i1] = y
    data_points[2*ptr7+i1] = z
  }

  var id_x = data_ids[ptr0]
  var id_y = data_ids[ptr2]
  var id_z = data_ids[ptr4]
  data_ids[ptr5] = id_x
  data_ids[ptr6] = id_y
  data_ids[ptr7] = id_z

  var weight_x = data_weights[ptr0]
  var weight_y = data_weights[ptr2]
  var weight_z = data_weights[ptr4]
  data_weights[ptr5] = weight_x
  data_weights[ptr6] = weight_y
  data_weights[ptr7] = weight_z

  move(index2, left,  data_levels, data_points, data_ids, data_weights)
  move(index4, right, data_levels, data_points, data_ids, data_weights)
  for (var k = less; k <= great; ++k) {
    if (comparePivot(k,
        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
        data_levels, data_points, data_ids)) {
      if (k !== less) {
        swap(k, less, data_levels, data_points, data_ids, data_weights)
      }
      ++less;
    } else {
      if (!comparePivot(k,
          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
          data_levels, data_points, data_ids)) {
        while (true) {
          if (!comparePivot(great,
              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
              data_levels, data_points, data_ids)) {
            if (--great < k) {
              break;
            }
            continue;
          } else {
            if (comparePivot(great,
                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
                data_levels, data_points, data_ids)) {
              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
              ++less;
              --great;
            } else {
              swap(k, great, data_levels, data_points, data_ids, data_weights)
              --great;
            }
            break;
          }
        }
      }
    }
  }
  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
  }
  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
  }
  if (great - less <= INSERT_SORT_CUTOFF) {
    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
  }
}

},{}],122:[function(require,module,exports){
'use strict'

var pool = require('typedarray-pool')

var sortLevels = require('./lib/sort')

module.exports = snapPoints

function partition(points, ids, start, end, lox, loy, hix, hiy) {
  var mid = start
  for(var i=start; i<end; ++i) {
    var x  = points[2*i]
    var y  = points[2*i+1]
    var s  = ids[i]
    if(lox <= x && x <= hix &&
       loy <= y && y <= hiy) {
      if(i === mid) {
        mid += 1
      } else {
        points[2*i]     = points[2*mid]
        points[2*i+1]   = points[2*mid+1]
        ids[i]          = ids[mid]
        points[2*mid]   = x
        points[2*mid+1] = y
        ids[mid]        = s
        mid += 1
      }
    }
  }
  return mid
}

function SnapInterval(pixelSize, offset, count) {
  this.pixelSize  = pixelSize
  this.offset     = offset
  this.count      = count
}

function snapPoints(points, ids, weights, bounds) {
  var n    = points.length >>> 1
  if(n < 1) {
    return []
  }

  var lox =  Infinity, loy =  Infinity
  var hix = -Infinity, hiy = -Infinity
  for(var i=0; i<n; ++i) {
    var x = points[2*i]
    var y = points[2*i+1]
    lox = Math.min(lox, x)
    hix = Math.max(hix, x)
    loy = Math.min(loy, y)
    hiy = Math.max(hiy, y)
    ids[i] = i
  }

  if(lox === hix) {
    hix += 1 + Math.abs(hix)
  }
  if(loy === hiy) {
    hiy += 1 + Math.abs(hix)
  }

  //Calculate diameter
  var scaleX = 1.0 / (hix - lox)
  var scaleY = 1.0 / (hiy - loy)
  var diam = Math.max(hix - lox, hiy - loy)

  bounds = bounds || [0,0,0,0]

  bounds[0] = lox
  bounds[1] = loy
  bounds[2] = hix
  bounds[3] = hiy

  var levels = pool.mallocInt32(n)
  var ptr = 0

  function snapRec(x, y, diam, start, end, level) {
    var diam_2 = diam * 0.5
    var offset = start + 1
    var count = end - start
    weights[ptr] = count
    levels[ptr++] = level
    for(var i=0; i<2; ++i) {
      for(var j=0; j<2; ++j) {
        var nx = x+i*diam_2
        var ny = y+j*diam_2
        var nextOffset = partition(
            points
          , ids
          , offset
          , end
          , nx, ny
          , nx+diam_2, ny+diam_2)
        if(nextOffset === offset) {
          continue
        }
        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
          var mid = (end + start)>>>1
          snapRec(nx, ny, diam_2, offset, mid, level+1)
          offset = mid
        }
        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
        offset = nextOffset
      }
    }
  }
  snapRec(lox, loy, diam, 0, n, 0)
  sortLevels(levels, points, ids, weights, n)

  var lod         = []
  var lastLevel   = 0
  var prevOffset  = n
  for(var ptr=n-1; ptr>=0; --ptr) {
    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY

    var level = levels[ptr]
    if(level === lastLevel) {
      continue
    }

    lod.push(new SnapInterval(
      diam * Math.pow(0.5, level),
      ptr+1,
      prevOffset - (ptr+1)
    ))
    prevOffset = ptr+1

    lastLevel = level
  }

  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
  pool.free(levels)

  return lod
}

},{"./lib/sort":121,"typedarray-pool":205}],123:[function(require,module,exports){
'use strict'

module.exports = createFancyScatter2D

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var pool = require('typedarray-pool')
var shaders = require('./lib/shaders')
var snapPoints = require('snap-points-2d')
var atlas = require('font-atlas-sdf')
var createTexture = require('gl-texture2d')
var colorId = require('color-id')
var ndarray = require('ndarray')
var clamp = require('clamp')
var search = require('binary-search-bounds')

function GLScatterFancy(
    plot,
    shader,
    pickShader,
    positionBuffer,
    sizeBuffer,
    colorBuffer,
    idBuffer,
    charBuffer) {
  this.plot           = plot
  this.shader         = shader
  this.pickShader     = pickShader

  //buffers
  this.positionBuffer = positionBuffer
  this.sizeBuffer     = sizeBuffer
  this.colorBuffer    = colorBuffer
  this.idBuffer       = idBuffer
  this.charBuffer      = charBuffer

  this.pointCount     = 0
  this.pickOffset     = 0

  //positions data
  this.points         = null

  //lod scales
  this.scales         = []
  this.xCoords        = []

  //font atlas texture
  this.charCanvas     = document.createElement('canvas')
  this.charTexture    = createTexture(this.plot.gl, this.charCanvas)
  this.charStep       = 400
  this.charFit        = .255

  //snapping loses points sorting, so disable snapping on small number of points
  this.snapThreshold  = 1e4

  //border/char colors texture
  this.paletteTexture   = createTexture(this.plot.gl, [256, 1])
}

var proto = GLScatterFancy.prototype

var SCALE_HI = new Float32Array([0, 0])
var SCALE_LO = new Float32Array([0, 0])
var TRANSLATE_HI = new Float32Array([0, 0])
var TRANSLATE_LO = new Float32Array([0, 0])

var PIXEL_SCALE = [0, 0]

var pixelSize, xStart, xEnd


function calcScales() {
  var plot       = this.plot

  var viewBox    = plot.viewBox
  var dataBox    = plot.dataBox
  var pixelRatio = plot.pixelRatio

  var dataX  = dataBox[2] - dataBox[0]
  var dataY  = dataBox[3] - dataBox[1]

  var scaleX = 2 / dataX
  var scaleY = 2 / dataY
  var translateX = (- dataBox[0] - 0.5 * dataX)
  var translateY = (- dataBox[1] - 0.5 * dataY)

  SCALE_HI[0] = scaleX
  SCALE_LO[0] = scaleX - SCALE_HI[0]
  SCALE_HI[1] = scaleY
  SCALE_LO[1] = scaleY - SCALE_HI[1]

  TRANSLATE_HI[0] = translateX
  TRANSLATE_LO[0] = translateX - TRANSLATE_HI[0]
  TRANSLATE_HI[1] = translateY
  TRANSLATE_LO[1] = translateY - TRANSLATE_HI[1]

  var screenX = viewBox[2] - viewBox[0]
  var screenY = viewBox[3] - viewBox[1]

  pixelSize   = Math.min(dataX / screenX, dataY / screenY)

  //FIXME: why twice?
  PIXEL_SCALE[0] = 2 * pixelRatio / screenX
  PIXEL_SCALE[1] = 2 * pixelRatio / screenY

  xStart = dataBox[0]
  xEnd = dataBox[2]
}

var PICK_OFFSET = [0, 0, 0, 0]

proto.drawPick = function(offset) {
  var pick = offset !== undefined
  var plot = this.plot
  var pointCount = this.pointCount
  var snap = pointCount > this.snapThreshold

  if(!pointCount) {
    return offset
  }

  calcScales.call(this)

  var gl = plot.gl
  var shader = pick ? this.pickShader : this.shader
  var blend = gl.isEnabled(gl.BLEND)

  shader.bind()

  if(pick) {
    this.pickOffset = offset

    for (var i = 0; i < 4; ++i) {
      PICK_OFFSET[i] = (offset >> (i * 8)) & 0xff
    }

    shader.uniforms.pickOffset = PICK_OFFSET

    this.idBuffer.bind()
    shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)

  } else {
    gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
    gl.blendColor(0,0,0,1);
    if (!blend) gl.enable(gl.BLEND)

    this.colorBuffer.bind()
    shader.attributes.color.pointer(gl.UNSIGNED_BYTE, false)

    this.charBuffer.bind()
    shader.attributes.char.pointer(gl.UNSIGNED_BYTE, false)

    shader.uniforms.chars = this.charTexture.bind(0)
    shader.uniforms.charsShape = [this.charCanvas.width, this.charCanvas.height]
    shader.uniforms.charsStep = this.charStep
    shader.uniforms.palette = this.paletteTexture.bind(1)
  }

  this.sizeBuffer.bind()
  shader.attributes.size.pointer(gl.FLOAT, false, 8, 0)
  if (!pick) shader.attributes.border.pointer(gl.FLOAT, false, 8, 4)

  this.positionBuffer.bind()
  shader.attributes.positionHi.pointer(gl.FLOAT, false, 16, 0)
  shader.attributes.positionLo.pointer(gl.FLOAT, false, 16, 8)

  shader.uniforms.pixelRatio  = plot.pixelRatio
  shader.uniforms.scaleHi     = SCALE_HI
  shader.uniforms.scaleLo     = SCALE_LO
  shader.uniforms.translateHi = TRANSLATE_HI
  shader.uniforms.translateLo = TRANSLATE_LO
  shader.uniforms.viewBox = plot.viewBox

  var scales = this.scales

  if (snap) {
    for (var scaleNum = scales.length - 1; scaleNum >= 0; scaleNum--) {
        var lod = scales[scaleNum]
        if(lod.pixelSize && (lod.pixelSize < pixelSize * 1.25) && scaleNum > 1) {
          continue
        }

        var intervalStart = lod.offset
        var intervalEnd   = lod.count + intervalStart

        var startOffset = search.ge(this.xCoords, xStart, intervalStart, intervalEnd - 1)
        var endOffset   = search.lt(this.xCoords, xEnd, startOffset, intervalEnd - 1) + 1

        if (endOffset > startOffset) {
          gl.drawArrays(gl.POINTS, startOffset, (endOffset - startOffset))
        }
    }
  }
  else {
    gl.drawArrays(gl.POINTS, 0, pointCount)
  }

  if (pick) return offset + pointCount
  else {
    if (!blend) gl.disable(gl.BLEND)
    else {
      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
    }
  }

}

proto.draw = proto.drawPick

proto.pick = function(x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.pointCount
  if(value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var points  = this.points
  return {
    object:    this,
    pointId:   pointId,
    dataCoord: [points[2 * pointId], points[2 * pointId + 1]]
  }
}

proto.update = function(options) {
  options = options || {}

  var positions     = options.positions || []
  var colors        = options.colors       || []
  var glyphs        = options.glyphs       || []
  var sizes         = options.sizes        || []
  var borderWidths  = options.borderWidths || []
  var borderColors  = options.borderColors || []
  var gl = this.plot.gl
  var pointCount = this.pointCount
  var snap = pointCount > this.snapThreshold

  //update positions
  if (options.positions != null) {
    this.points = positions

    pointCount = this.points.length / 2

    snap = pointCount > this.snapThreshold

    //create packed positions here
    var packedW            = pool.mallocFloat32(2 * pointCount)
    var packed             = pool.mallocFloat64(2 * pointCount)
    var v_ids       = pool.mallocUint32(pointCount)
    var v_position  = pool.mallocFloat32(4 * pointCount)

    packed.set(this.points)

    if (snap) {
      if (this.i2idx) pool.free(this.i2idx)
      this.i2idx = pool.mallocInt32(pointCount)
      this.scales = snapPoints(packed, this.i2idx, packedW)
    }

    this.pointCount = pointCount


    for(var i = 0; i < pointCount; ++i) {
      var id = snap ? this.i2idx[i] : i

      v_ids[i] = id

      //collect buffers data
      var x = positions[2 * id]
      var y = positions[2 * id + 1]

      //write hi- and lo- position parts
      v_position[4 * i]      = x
      v_position[4 * i + 1]  = y
      v_position[4 * i + 2]  = x - v_position[4 * i]
      v_position[4 * i + 3]  = y - v_position[4 * i + 1]

      this.xCoords[i] = x
    }

    this.idBuffer.update(v_ids)
    this.positionBuffer.update(v_position)
    pool.free(v_position)
    pool.free(v_ids)
    pool.free(packed)
    pool.free(packedW)
  }

  var v_sizeWidth = pool.mallocFloat32(2 * pointCount)
  var v_color     = pool.mallocUint8(2 * pointCount)
  var v_chars     = pool.mallocUint8(2 * pointCount)

  //aggregate colors
  var paletteIds = {}, colorIds = [], paletteColors = [], bColorIds = []
  for (var i = 0, l = pointCount, k = 0; i < l; ++i) {
    var channels = [colors[4 * i] * 255, colors[4 * i + 1] * 255, colors[4 * i + 2] * 255, colors[4 * i + 3] * 255]
    var cId = colorId(channels, false)
    if (paletteIds[cId] == null) {
      paletteIds[cId] = k++
      paletteColors.push(channels[0])
      paletteColors.push(channels[1])
      paletteColors.push(channels[2])
      paletteColors.push(channels[3])
    }
    colorIds.push(cId)

    if (borderColors && borderColors.length) {
      channels = [borderColors[4 * i] * 255, borderColors[4 * i + 1] * 255, borderColors[4 * i + 2] * 255, borderColors[4 * i + 3] * 255]
      cId = colorId(channels, false)
      if (paletteIds[cId] == null) {
        paletteIds[cId] = k++
        paletteColors.push(channels[0])
        paletteColors.push(channels[1])
        paletteColors.push(channels[2])
        paletteColors.push(channels[3])
      }
      bColorIds.push(cId)
    }
  }

  //aggregate glyphs
  var glyphChars = {}
  for (var i = 0, l = pointCount, k = 0; i < l; i++) {
    var char = glyphs[i]
    if (glyphChars[char] == null) {
      glyphChars[char] = k++
    }
  }

  //generate font atlas
  var maxSize = 0
  for (var i = 0, l = sizes.length; i < l; ++i) {
    if (sizes[i] > maxSize) maxSize = sizes[i]
  }
  var oldStep = this.charStep
  this.charStep = clamp(Math.ceil(maxSize*4), 128, 768)

  var chars = Object.keys(glyphChars)
  var step = this.charStep
  var charSize = Math.floor(step / 2)
  var maxW = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  var maxChars = (maxW / step) * (maxW / step)
  var atlasW = Math.min(maxW, step*chars.length)
  var atlasH = Math.min(maxW, step*Math.ceil(step*chars.length/maxW))
  var cols = Math.floor(atlasW / step)
  if (chars.length > maxChars) {
    console.warn('gl-scatter2d-fancy: number of characters is more than maximum texture size. Try reducing it.')
  }

  //do not overupdate atlas
  if (!this.chars || (this.chars+'' !== chars+'') || this.charStep != oldStep) {
    this.charCanvas = atlas({
      canvas: this.charCanvas,
      family: 'sans-serif',
      size: charSize,
      shape: [atlasW, atlasH],
      step: [step, step],
      chars: chars,
      align: true,
      fit: this.charFit
    })
    this.chars = chars
  }

  for(var i = 0; i < pointCount; ++i) {
    var id = snap ? this.i2idx[i] : i

    var s = sizes[id]
    var w = borderWidths[id]

    //size is doubled bc character SDF is twice less than character step
    v_sizeWidth[2 * i]     = s*2
    v_sizeWidth[2 * i + 1] = w

    //color/bufferColor indexes
    var cId = colorIds[id]
    var pcId = paletteIds[cId]
    v_color[2 * i] = pcId
    var bcId = bColorIds[id]
    var pbcId = paletteIds[bcId]
    v_color[2 * i + 1] = pbcId

    //char indexes
    var char = glyphs[id]
    var charId = glyphChars[char]
    v_chars[2 * i + 1] = Math.floor(charId / cols)
    v_chars[2 * i] = charId % cols
  }

  //fill buffes
  this.sizeBuffer.update(v_sizeWidth)
  this.colorBuffer.update(v_color)
  this.charBuffer.update(v_chars)

  //update char/color textures
  this.charTexture.shape = [this.charCanvas.width, this.charCanvas.height]
  if (this.charCanvas && this.charCanvas.width) {
    this.charTexture.setPixels(this.charCanvas)
  }
  this.paletteTexture.setPixels(ndarray(paletteColors.slice(0, 256*4), [256, 1, 4]))

  pool.free(v_sizeWidth)
  pool.free(v_color)
  pool.free(v_chars)
}

proto.dispose = function() {
  this.shader.dispose()
  this.pickShader.dispose()
  this.positionBuffer.dispose()
  this.sizeBuffer.dispose()
  this.colorBuffer.dispose()
  this.idBuffer.dispose()
  this.charBuffer.dispose()
  this.plot.removeObject(this)
}

function createFancyScatter2D(plot, options) {
  var gl = plot.gl

  var shader     = createShader(gl, shaders.vertex,     shaders.fragment)
  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)

  var positionBuffer   = createBuffer(gl)
  var sizeBuffer       = createBuffer(gl)
  var colorBuffer      = createBuffer(gl)
  var idBuffer         = createBuffer(gl)
  var charBuffer       = createBuffer(gl)

  var scatter = new GLScatterFancy(
    plot,
    shader,
    pickShader,
    positionBuffer,
    sizeBuffer,
    colorBuffer,
    idBuffer,
    charBuffer)

  scatter.update(options)

  plot.addObject(scatter)

  return scatter
}

},{"./lib/shaders":112,"binary-search-bounds":113,"clamp":48,"color-id":51,"font-atlas-sdf":69,"gl-buffer":73,"gl-shader":114,"gl-texture2d":140,"ndarray":163,"snap-points-2d":122,"typedarray-pool":205}],124:[function(require,module,exports){


exports.pointVertex       = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi, positionLo;\nattribute float weight;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\n\nvec4 pfx_1_0(vec2 scaleHi, vec2 scaleLo, vec2 translateHi, vec2 translateLo, vec2 positionHi, vec2 positionLo) {\n  return vec4((positionHi + translateHi) * scaleHi\n            + (positionLo + translateLo) * scaleHi\n            + (positionHi + translateHi) * scaleLo\n            + (positionLo + translateLo) * scaleLo, 0.0, 1.0);\n}\n\nvoid main() {\n  gl_Position = pfx_1_0(scaleHi, scaleLo, translateHi, translateLo, positionHi, positionLo);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}"
exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}\n"
exports.pickVertex        = "precision highp float;\n#define GLSLIFY 1\n\nvec4 pfx_1_0(vec2 scaleHi, vec2 scaleLo, vec2 translateHi, vec2 translateLo, vec2 positionHi, vec2 positionLo) {\n  return vec4((positionHi + translateHi) * scaleHi\n            + (positionLo + translateLo) * scaleHi\n            + (positionHi + translateHi) * scaleLo\n            + (positionLo + translateLo) * scaleLo, 0.0, 1.0);\n}\n\nattribute vec2 positionHi, positionLo;\nattribute vec4 pickId;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  gl_Position = pfx_1_0(scaleHi, scaleLo, translateHi, translateLo, positionHi, positionLo);\n  gl_PointSize = pointSize;\n  fragId = id;\n}"
exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0 * gl_PointCoord.xy - 1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}"
},{}],125:[function(require,module,exports){
arguments[4][47][0].apply(exports,arguments)
},{"dup":47}],126:[function(require,module,exports){
arguments[4][121][0].apply(exports,arguments)
},{"dup":121}],127:[function(require,module,exports){
arguments[4][122][0].apply(exports,arguments)
},{"./lib/sort":126,"dup":122,"typedarray-pool":205}],128:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var search = require('binary-search-bounds')
var snapPoints = require('snap-points-2d')
var pool = require('typedarray-pool')
var SHADERS = require('./lib/shader')
var normalize = require('array-normalize')
var getBounds = require('array-bounds')

module.exports = createScatter2D

function Scatter2D(plot, positionBufferHi, positionBufferLo, pickBuffer, weightBuffer, shader, pickShader) {
  this.plot             = plot
  this.positionBufferHi = positionBufferHi
  this.positionBufferLo = positionBufferLo
  this.pickBuffer       = pickBuffer
  this.weightBuffer     = weightBuffer
  this.shader           = shader
  this.pickShader       = pickShader
  this.scales           = []
  this.size             = 12.0
  this.borderSize       = 1.0
  this.pointCount       = 0
  this.color            = [1, 0, 0, 1]
  this.borderColor      = [0, 0, 0, 1]
  this.bounds           = [Infinity, Infinity, -Infinity, -Infinity]
  this.pickOffset       = 0
  this.points           = null
  this.xCoords          = null
  this.snapPoints       = true
}

var proto = Scatter2D.prototype
var scaleHi = new Float32Array(2)
var scaleLo = new Float32Array(2)
var translateHi = new Float32Array(2)
var translateLo = new Float32Array(2)
var PICK_VEC4 = [0, 0, 0, 0]

proto.dispose = function() {
  this.shader.dispose()
  this.pickShader.dispose()
  this.positionBufferHi.dispose()
  this.positionBufferLo.dispose()
  this.pickBuffer.dispose()
  if(this.xCoords) pool.free(this.xCoords)
  this.plot.removeObject(this)
}

proto.update = function(options) {
  options = options || {}

  function dflt(opt, value) {
    return opt in options ? options[opt] : value
  }

  this.size         = dflt('size', 12)
  this.color        = dflt('color', [1, 0, 0, 1]).slice()
  this.borderSize   = dflt('borderSize', 1)
  this.borderColor  = dflt('borderColor', [0, 0, 0, 1]).slice()
  this.snapPoints   = dflt('snapPoints', true)

  //do not recalc points if there is no positions
  if (options.positions != null) {
    if(this.xCoords) pool.free(this.xCoords)

    this.points             = options.positions
    var pointCount          = this.points.length >>> 1

    var packedId = pool.mallocInt32(pointCount)
    var packedW = pool.mallocFloat32(pointCount)
    var packed = pool.mallocFloat64(2 * pointCount)
    packed.set(this.points)

    if (this.snapPoints) {
      this.scales = snapPoints(packed, packedId, packedW, this.bounds)
    }
    else {
      //get bounds
      this.bounds = getBounds(packed, 2)

      // rescale packed to unit box
      normalize(packed, 2, this.bounds)

      // generate fake ids
      for (var i = 0; i < pointCount; i++) {
        packedId[i] = i
        packedW[i] = 1
      }
    }

    var xCoords             = pool.mallocFloat64(pointCount)
    var packedHi            = pool.mallocFloat32(2 * pointCount)
    var packedLo            = pool.mallocFloat32(2 * pointCount)
    packedHi.set(packed)
    for(var i = 0, j = 0; i < pointCount; i++, j += 2) {
      packedLo[j] = packed[j] - packedHi[j]
      packedLo[j + 1] = packed[j + 1] - packedHi[j + 1]
      xCoords[i] = packed[j]
    }
    this.positionBufferHi.update(packedHi)
    this.positionBufferLo.update(packedLo)
    this.pickBuffer.update(packedId)
    this.weightBuffer.update(packedW)

    pool.free(packedHi)
    pool.free(packedLo)
    pool.free(packedW)
    pool.free(packed)
    pool.free(packedId)

    this.xCoords = xCoords
    this.pointCount = pointCount
    this.pickOffset = 0
  }
}

proto.draw = function(pickOffset) {
  var pick = pickOffset !== void(0)

  var plot             = this.plot
  var shader           = pick ? this.pickShader : this.shader
  var scales           = this.scales
  var positionBufferHi = this.positionBufferHi
  var positionBufferLo = this.positionBufferLo
  var pickBuffer       = this.pickBuffer
  var bounds           = this.bounds
  var size             = this.size
  var borderSize       = this.borderSize
  var gl               = plot.gl
  var pixelRatio       = pick ? plot.pickPixelRatio : plot.pixelRatio
  var viewBox          = plot.viewBox
  var dataBox          = plot.dataBox

  if(this.pointCount === 0)
    return pickOffset

  var boundX  = bounds[2] - bounds[0]
  var boundY  = bounds[3] - bounds[1]
  var dataX   = dataBox[2] - dataBox[0]
  var dataY   = dataBox[3] - dataBox[1]
  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio

  var pixelSize = this.pixelSize = Math.min(dataX / screenX, dataY / screenY)

  var scaleX = 2 * boundX / dataX
  var scaleY = 2 * boundY / dataY

  scaleHi[0] = scaleX
  scaleHi[1] = scaleY

  scaleLo[0] = scaleX - scaleHi[0]
  scaleLo[1] = scaleY - scaleHi[1]

  var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
  var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

  translateHi[0] = translateX
  translateHi[1] = translateY

  translateLo[0] = translateX - translateHi[0]
  translateLo[1] = translateY - translateHi[1]

  shader.bind()
  shader.uniforms.scaleHi     = scaleHi
  shader.uniforms.scaleLo     = scaleLo
  shader.uniforms.translateHi = translateHi
  shader.uniforms.translateLo = translateLo
  shader.uniforms.color       = this.color
  shader.uniforms.borderColor = this.borderColor
  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
  shader.uniforms.centerFraction = this.borderSize === 0 ? 2 : size / (size + borderSize + 1.25)

  positionBufferHi.bind()
  shader.attributes.positionHi.pointer()

  positionBufferLo.bind()
  shader.attributes.positionLo.pointer()

  if(pick) {
    this.pickOffset = pickOffset
    PICK_VEC4[0] = ( pickOffset        & 0xff)
    PICK_VEC4[1] = ((pickOffset >> 8)  & 0xff)
    PICK_VEC4[2] = ((pickOffset >> 16) & 0xff)
    PICK_VEC4[3] = ((pickOffset >> 24) & 0xff)
    shader.uniforms.pickOffset = PICK_VEC4

    pickBuffer.bind()
    shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)

  } else {

    shader.uniforms.useWeight = 1
    this.weightBuffer.bind()
    shader.attributes.weight.pointer()

  }


  var firstLevel = true

  if (this.snapPoints) {
    for(var scaleNum = scales.length - 1; scaleNum >= 0; scaleNum--) {
      var lod = scales[scaleNum]
      if(lod.pixelSize < pixelSize && scaleNum > 1)
        continue

      var range = this.getVisibleRange(lod)
      var startOffset = range[0], endOffset = range[1]

      if(endOffset > startOffset)
        gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)

      if(!pick && firstLevel) {
        firstLevel = false
        shader.uniforms.useWeight = 0
      }
    }
  }
  else {
    gl.drawArrays(gl.POINTS, 0, this.pointCount)
  }

  return pickOffset + this.pointCount
}

proto.getVisibleRange = function (lod) {
  var dataBox = this.plot.dataBox,
      bounds = this.bounds,
      pixelSize = this.pixelSize,
      size = this.size,
      pixelRatio = this.plot.pixelRatio,
      boundX  = bounds[2] - bounds[0],
      boundY  = bounds[3] - bounds[1]

  if (!lod) {
    for(var scaleNum = this.scales.length - 1, lod; scaleNum >= 0; scaleNum--) {
      lod = this.scales[scaleNum];
      if(!(lod.pixelSize < pixelSize && scaleNum > 1)) break;
    }
  }

  var xCoords = this.xCoords
  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX

  var intervalStart = lod.offset
  var intervalEnd   = lod.count + intervalStart

  var startOffset = search.ge(xCoords, xStart, intervalStart, intervalEnd - 1)
  var endOffset   = search.lt(xCoords, xEnd, startOffset, intervalEnd - 1) + 1

  return [startOffset, endOffset]
}

proto.drawPick = proto.draw

proto.pick = function(x, y, value) {
  var pointId = value - this.pickOffset
  return pointId < 0 || pointId >= this.pointCount
    ? null : {
    object:  this,
    pointId: pointId,
    dataCoord: [ this.points[2 * pointId], this.points[2 * pointId + 1] ]
  }
}

function createScatter2D(plot, options) {
  var gl = plot.gl
  var positionBufferHi = createBuffer(gl)
  var positionBufferLo = createBuffer(gl)
  var pickBuffer = createBuffer(gl)
  var weightBuffer = createBuffer(gl)
  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)

  var result = new Scatter2D(plot, positionBufferHi, positionBufferLo, pickBuffer, weightBuffer, shader, pickShader)
  result.update(options)

  plot.addObject(result) // register with plot

  return result
}

},{"./lib/shader":124,"array-bounds":11,"array-normalize":12,"binary-search-bounds":125,"gl-buffer":73,"gl-shader":132,"snap-points-2d":127,"typedarray-pool":205}],129:[function(require,module,exports){
'use strict'



exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"

},{}],130:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')

var SHADERS = require('./lib/shaders')

module.exports = createSelectBox

function SelectBox(plot, boxBuffer, boxShader) {
  this.plot = plot
  this.boxBuffer = boxBuffer
  this.boxShader = boxShader

  this.enabled = true

  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]

  this.borderColor = [0,0,0,1]
  this.innerFill   = false
  this.innerColor  = [0,0,0,0.25]
  this.outerFill   = true
  this.outerColor  = [0,0,0,0.5]
  this.borderWidth = 10
}

var proto = SelectBox.prototype

proto.draw = function() {
  if(!this.enabled) {
    return
  }

  var plot         = this.plot
  var selectBox    = this.selectBox
  var lineWidth    = this.borderWidth

  var innerFill    = this.innerFill
  var innerColor   = this.innerColor
  var outerFill    = this.outerFill
  var outerColor   = this.outerColor
  var borderColor  = this.borderColor

  var boxes        = plot.box
  var screenBox    = plot.screenBox
  var dataBox      = plot.dataBox
  var viewBox      = plot.viewBox
  var pixelRatio   = plot.pixelRatio

  //Map select box into pixel coordinates
  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]

  loX = Math.max(loX, viewBox[0])
  loY = Math.max(loY, viewBox[1])
  hiX = Math.min(hiX, viewBox[2])
  hiY = Math.min(hiY, viewBox[3])

  if(hiX < loX || hiY < loY) {
    return
  }

  boxes.bind()

  //Draw box
  var screenWidth  = screenBox[2] - screenBox[0]
  var screenHeight = screenBox[3] - screenBox[1]

  if(this.outerFill) {
    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
    boxes.drawBox(0, loY, loX, hiY, outerColor)
    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
  }

  if(this.innerFill) {
    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
  }

  //Draw border
  if(lineWidth > 0) {

    //Draw border
    var w = lineWidth * pixelRatio
    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
  }
}

proto.update = function(options) {
  options = options || {}

  this.innerFill    = !!options.innerFill
  this.outerFill    = !!options.outerFill
  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
  this.borderWidth  = options.borderWidth || 0
  this.selectBox    = (options.selectBox || this.selectBox).slice()
}

proto.dispose = function() {
  this.boxBuffer.dispose()
  this.boxShader.dispose()
  this.plot.removeOverlay(this)
}

function createSelectBox(plot, options) {
  var gl = plot.gl
  var buffer = createBuffer(gl, [
    0, 0,
    0, 1,
    1, 0,
    1, 1 ])
  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
  var selectBox = new SelectBox(plot, buffer, shader)
  selectBox.update(options)
  plot.addOverlay(selectBox)
  return selectBox
}

},{"./lib/shaders":129,"gl-buffer":73,"gl-shader":132}],131:[function(require,module,exports){
'use strict'

module.exports = createSelectBuffer

var createFBO = require('gl-fbo')
var pool      = require('typedarray-pool')
var ndarray   = require('ndarray')

var nextPow2  = require('bit-twiddle').nextPow2

var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(_inline_52_arg0_<255||_inline_52_arg1_<255||_inline_52_arg2_<255||_inline_52_arg3_<255){var _inline_52_l=_inline_52_arg4_-_inline_52_arg6_[0],_inline_52_a=_inline_52_arg5_-_inline_52_arg6_[1],_inline_52_f=_inline_52_l*_inline_52_l+_inline_52_a*_inline_52_a;_inline_52_f<this_closestD2&&(this_closestD2=_inline_52_f,this_closestX=_inline_52_arg6_[0],this_closestY=_inline_52_arg6_[1])}}","args":[{"name":"_inline_52_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_52_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_52_a","_inline_52_f","_inline_52_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})

function SelectResult(x, y, id, value, distance) {
  this.coord = [x, y]
  this.id = id
  this.value = value
  this.distance = distance
}

function SelectBuffer(gl, fbo, buffer) {
  this.gl     = gl
  this.fbo    = fbo
  this.buffer = buffer
  this._readTimeout = null
  var self = this

  this._readCallback = function() {
    if(!self.gl) {
      return
    }
    fbo.bind()
    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
    self._readTimeout = null
  }
}

var proto = SelectBuffer.prototype

Object.defineProperty(proto, 'shape', {
  get: function() {
    if(!this.gl) {
      return [0,0]
    }
    return this.fbo.shape.slice()
  },
  set: function(v) {
    if(!this.gl) {
      return
    }
    this.fbo.shape = v
    var c = this.fbo.shape[0]
    var r = this.fbo.shape[1]
    if(r*c*4 > this.buffer.length) {
      pool.free(this.buffer)
      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
      for(var i=0; i<r*c*4; ++i) {
        buffer[i] = 0xff
      }
    }
    return v
  }
})

proto.begin = function() {
  var gl = this.gl
  var shape = this.shape
  if(!gl) {
    return
  }

  this.fbo.bind()
  gl.clearColor(1,1,1,1)
  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
}

proto.end = function() {
  var gl = this.gl
  if(!gl) {
    return
  }
  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
  if(!this._readTimeout) {
    clearTimeout(this._readTimeout)
  }
  this._readTimeout = setTimeout(this._readCallback, 1)
}

proto.query = function(x, y, radius) {
  if(!this.gl) {
    return null
  }

  var shape = this.fbo.shape.slice()

  x = x|0
  y = y|0
  if(typeof radius !== 'number') {
    radius = 1.0
  }

  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0

  if(x1 <= x0 || y1 <= y0) {
    return null
  }

  var dims   = [x1-x0,y1-y0]
  var region = ndarray(
    this.buffer,
    [dims[0], dims[1], 4],
    [4, shape[0]*4, 1],
    4*(x0 + shape[0]*y0));

  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
  var dx = closest[0]
  var dy = closest[1]
  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
    return null
  }

  var c0 = region.get(dx, dy, 0)
  var c1 = region.get(dx, dy, 1)
  var c2 = region.get(dx, dy, 2)
  var c3 = region.get(dx, dy, 3)

  return new SelectResult(
     (dx + x0)|0,
     (dy + y0)|0,
     c0,
     [c1, c2, c3],
     Math.sqrt(closest[2]))
}

proto.dispose = function() {
  if(!this.gl) {
    return
  }
  this.fbo.dispose()
  pool.free(this.buffer)
  this.gl = null
  if(this._readTimeout) {
    clearTimeout(this._readTimeout)
  }
}

function createSelectBuffer(gl, shape) {
  var fbo = createFBO(gl, shape)
  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
  return new SelectBuffer(gl, fbo, buffer)
}

},{"bit-twiddle":31,"cwise/lib/wrapper":61,"gl-fbo":81,"ndarray":163,"typedarray-pool":205}],132:[function(require,module,exports){
'use strict'

var createUniformWrapper   = require('./lib/create-uniforms')
var createAttributeWrapper = require('./lib/create-attributes')
var makeReflect            = require('./lib/reflect')
var shaderCache            = require('./lib/shader-cache')
var runtime                = require('./lib/runtime-reflect')
var GLError                = require("./lib/GLError")

//Shader object
function Shader(gl) {
  this.gl         = gl

  //Default initialize these to null
  this._vref      =
  this._fref      =
  this._relink    =
  this.vertShader =
  this.fragShader =
  this.program    =
  this.attributes =
  this.uniforms   =
  this.types      = null
}

var proto = Shader.prototype

proto.bind = function() {
  if(!this.program) {
    this._relink()
  }
  this.gl.useProgram(this.program)
}

proto.dispose = function() {
  if(this._fref) {
    this._fref.dispose()
  }
  if(this._vref) {
    this._vref.dispose()
  }
  this.attributes =
  this.types      =
  this.vertShader =
  this.fragShader =
  this.program    =
  this._relink    =
  this._fref      =
  this._vref      = null
}

function compareAttributes(a, b) {
  if(a.name < b.name) {
    return -1
  }
  return 1
}

//Update export hook for glslify-live
proto.update = function(
    vertSource
  , fragSource
  , uniforms
  , attributes) {

  //If only one object passed, assume glslify style output
  if(!fragSource || arguments.length === 1) {
    var obj = vertSource
    vertSource = obj.vertex
    fragSource = obj.fragment
    uniforms   = obj.uniforms
    attributes = obj.attributes
  }

  var wrapper = this
  var gl      = wrapper.gl

  //Compile vertex and fragment shaders
  var pvref = wrapper._vref
  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
  if(pvref) {
    pvref.dispose()
  }
  wrapper.vertShader = wrapper._vref.shader
  var pfref = this._fref
  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
  if(pfref) {
    pfref.dispose()
  }
  wrapper.fragShader = wrapper._fref.shader

  //If uniforms/attributes is not specified, use RT reflection
  if(!uniforms || !attributes) {

    //Create initial test program
    var testProgram = gl.createProgram()
    gl.attachShader(testProgram, wrapper.fragShader)
    gl.attachShader(testProgram, wrapper.vertShader)
    gl.linkProgram(testProgram)
    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
      var errLog = gl.getProgramInfoLog(testProgram)
      throw new GLError(errLog, 'Error linking program:' + errLog)
    }

    //Load data from runtime
    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
    attributes = attributes || runtime.attributes(gl, testProgram)

    //Release test program
    gl.deleteProgram(testProgram)
  }

  //Sort attributes lexicographically
  // overrides undefined WebGL behavior for attribute locations
  attributes = attributes.slice()
  attributes.sort(compareAttributes)

  //Convert attribute types, read out locations
  var attributeUnpacked  = []
  var attributeNames     = []
  var attributeLocations = []
  for(var i=0; i<attributes.length; ++i) {
    var attr = attributes[i]
    if(attr.type.indexOf('mat') >= 0) {
      var size = attr.type.charAt(attr.type.length-1)|0
      var locVector = new Array(size)
      for(var j=0; j<size; ++j) {
        locVector[j] = attributeLocations.length
        attributeNames.push(attr.name + '[' + j + ']')
        if(typeof attr.location === 'number') {
          attributeLocations.push(attr.location + j)
        } else if(Array.isArray(attr.location) &&
                  attr.location.length === size &&
                  typeof attr.location[j] === 'number') {
          attributeLocations.push(attr.location[j]|0)
        } else {
          attributeLocations.push(-1)
        }
      }
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: locVector
      })
    } else {
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: [ attributeLocations.length ]
      })
      attributeNames.push(attr.name)
      if(typeof attr.location === 'number') {
        attributeLocations.push(attr.location|0)
      } else {
        attributeLocations.push(-1)
      }
    }
  }

  //For all unspecified attributes, assign them lexicographically min attribute
  var curLocation = 0
  for(var i=0; i<attributeLocations.length; ++i) {
    if(attributeLocations[i] < 0) {
      while(attributeLocations.indexOf(curLocation) >= 0) {
        curLocation += 1
      }
      attributeLocations[i] = curLocation
    }
  }

  //Rebuild program and recompute all uniform locations
  var uniformLocations = new Array(uniforms.length)
  function relink() {
    wrapper.program = shaderCache.program(
        gl
      , wrapper._vref
      , wrapper._fref
      , attributeNames
      , attributeLocations)

    for(var i=0; i<uniforms.length; ++i) {
      uniformLocations[i] = gl.getUniformLocation(
          wrapper.program
        , uniforms[i].name)
    }
  }

  //Perform initial linking, reuse program used for reflection
  relink()

  //Save relinking procedure, defer until runtime
  wrapper._relink = relink

  //Generate type info
  wrapper.types = {
    uniforms:   makeReflect(uniforms),
    attributes: makeReflect(attributes)
  }

  //Generate attribute wrappers
  wrapper.attributes = createAttributeWrapper(
      gl
    , wrapper
    , attributeUnpacked
    , attributeLocations)

  //Generate uniform wrappers
  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
      gl
    , wrapper
    , uniforms
    , uniformLocations))
}

//Compiles and links a shader program with the given attribute and vertex list
function createShader(
    gl
  , vertSource
  , fragSource
  , uniforms
  , attributes) {

  var shader = new Shader(gl)

  shader.update(
      vertSource
    , fragSource
    , uniforms
    , attributes)

  return shader
}

module.exports = createShader

},{"./lib/GLError":133,"./lib/create-attributes":134,"./lib/create-uniforms":135,"./lib/reflect":136,"./lib/runtime-reflect":137,"./lib/shader-cache":138}],133:[function(require,module,exports){
arguments[4][96][0].apply(exports,arguments)
},{"dup":96}],134:[function(require,module,exports){
arguments[4][97][0].apply(exports,arguments)
},{"./GLError":133,"dup":97}],135:[function(require,module,exports){
arguments[4][98][0].apply(exports,arguments)
},{"./GLError":133,"./reflect":136,"dup":98}],136:[function(require,module,exports){
arguments[4][99][0].apply(exports,arguments)
},{"dup":99}],137:[function(require,module,exports){
arguments[4][100][0].apply(exports,arguments)
},{"dup":100}],138:[function(require,module,exports){
arguments[4][101][0].apply(exports,arguments)
},{"./GLError":133,"dup":101,"gl-format-compiler-error":82,"weakmap-shim":212}],139:[function(require,module,exports){
'use strict'

module.exports = createSpikes2D

function GLSpikes2D(plot) {
  this.plot = plot
  this.enable = [true, true, false, false]
  this.width  = [1, 1, 1, 1]
  this.color  = [[0,0,0,1],
                 [0,0,0,1],
                 [0,0,0,1],
                 [0,0,0,1]]
  this.center = [Infinity, Infinity]
}

var proto = GLSpikes2D.prototype

proto.update = function(options) {
  options = options || {}
  this.enable = (options.enable || [true,true,false,false]).slice()
  this.width  = (options.width || [1,1,1,1]).slice()
  this.color  = (options.color || [
                  [0,0,0,1],
                  [0,0,0,1],
                  [0,0,0,1],
                  [0,0,0,1]]).map(function(x) { return x.slice() })
  this.center = (options.center || [Infinity,Infinity]).slice()
  this.plot.setOverlayDirty()
}

proto.draw = function() {
  var spikeEnable = this.enable
  var spikeWidth  = this.width
  var spikeColor  = this.color
  var spikeCenter = this.center
  var plot        = this.plot
  var line        = plot.line

  var dataBox     = plot.dataBox
  var viewPixels  = plot.viewBox

  line.bind()

  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {

    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])

    if(spikeEnable[0]) {
     line.drawLine(
       centerX, centerY,
       viewPixels[0], centerY,
       spikeWidth[0], spikeColor[0])
    }
    if(spikeEnable[1]) {
     line.drawLine(
       centerX, centerY,
       centerX, viewPixels[1],
       spikeWidth[1], spikeColor[1])
    }
    if(spikeEnable[2]) {
      line.drawLine(
        centerX, centerY,
        viewPixels[2], centerY,
        spikeWidth[2], spikeColor[2])
    }
    if(spikeEnable[3]) {
      line.drawLine(
        centerX, centerY,
        centerX, viewPixels[3],
        spikeWidth[3], spikeColor[3])
    }
  }
}

proto.dispose = function() {
  this.plot.removeOverlay(this)
}

function createSpikes2D(plot, options) {
  var spikes = new GLSpikes2D(plot)
  spikes.update(options)
  plot.addOverlay(spikes)
  return spikes
}

},{}],140:[function(require,module,exports){
'use strict'

var ndarray = require('ndarray')
var ops     = require('ndarray-ops')
var pool    = require('typedarray-pool')

module.exports = createTexture2D

var linearTypes = null
var filterTypes = null
var wrapTypes   = null

function lazyInitLinearTypes(gl) {
  linearTypes = [
    gl.LINEAR,
    gl.NEAREST_MIPMAP_LINEAR,
    gl.LINEAR_MIPMAP_NEAREST,
    gl.LINEAR_MIPMAP_NEAREST
  ]
  filterTypes = [
    gl.NEAREST,
    gl.LINEAR,
    gl.NEAREST_MIPMAP_NEAREST,
    gl.NEAREST_MIPMAP_LINEAR,
    gl.LINEAR_MIPMAP_NEAREST,
    gl.LINEAR_MIPMAP_LINEAR
  ]
  wrapTypes = [
    gl.REPEAT,
    gl.CLAMP_TO_EDGE,
    gl.MIRRORED_REPEAT
  ]
}

function acceptTextureDOM (obj) {
  return (
    ('undefined' != typeof HTMLCanvasElement && obj instanceof HTMLCanvasElement) ||
    ('undefined' != typeof HTMLImageElement && obj instanceof HTMLImageElement) ||
    ('undefined' != typeof HTMLVideoElement && obj instanceof HTMLVideoElement) ||
    ('undefined' != typeof ImageData && obj instanceof ImageData))
}

var convertFloatToUint8 = function(out, inp) {
  ops.muls(out, inp, 255.0)
}

function reshapeTexture(tex, w, h) {
  var gl = tex.gl
  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
    throw new Error('gl-texture2d: Invalid texture size')
  }
  tex._shape = [w, h]
  tex.bind()
  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
  tex._mipLevels = [0]
  return tex
}

function Texture2D(gl, handle, width, height, format, type) {
  this.gl = gl
  this.handle = handle
  this.format = format
  this.type = type
  this._shape = [width, height]
  this._mipLevels = [0]
  this._magFilter = gl.NEAREST
  this._minFilter = gl.NEAREST
  this._wrapS = gl.CLAMP_TO_EDGE
  this._wrapT = gl.CLAMP_TO_EDGE
  this._anisoSamples = 1

  var parent = this
  var wrapVector = [this._wrapS, this._wrapT]
  Object.defineProperties(wrapVector, [
    {
      get: function() {
        return parent._wrapS
      },
      set: function(v) {
        return parent.wrapS = v
      }
    },
    {
      get: function() {
        return parent._wrapT
      },
      set: function(v) {
        return parent.wrapT = v
      }
    }
  ])
  this._wrapVector = wrapVector

  var shapeVector = [this._shape[0], this._shape[1]]
  Object.defineProperties(shapeVector, [
    {
      get: function() {
        return parent._shape[0]
      },
      set: function(v) {
        return parent.width = v
      }
    },
    {
      get: function() {
        return parent._shape[1]
      },
      set: function(v) {
        return parent.height = v
      }
    }
  ])
  this._shapeVector = shapeVector
}

var proto = Texture2D.prototype

Object.defineProperties(proto, {
  minFilter: {
    get: function() {
      return this._minFilter
    },
    set: function(v) {
      this.bind()
      var gl = this.gl
      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
        if(!gl.getExtension('OES_texture_float_linear')) {
          v = gl.NEAREST
        }
      }
      if(filterTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown filter mode ' + v)
      }
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
      return this._minFilter = v
    }
  },
  magFilter: {
    get: function() {
      return this._magFilter
    },
    set: function(v) {
      this.bind()
      var gl = this.gl
      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
        if(!gl.getExtension('OES_texture_float_linear')) {
          v = gl.NEAREST
        }
      }
      if(filterTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown filter mode ' + v)
      }
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
      return this._magFilter = v
    }
  },
  mipSamples: {
    get: function() {
      return this._anisoSamples
    },
    set: function(i) {
      var psamples = this._anisoSamples
      this._anisoSamples = Math.max(i, 1)|0
      if(psamples !== this._anisoSamples) {
        var ext = this.gl.getExtension('EXT_texture_filter_anisotropic')
        if(ext) {
          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
        }
      }
      return this._anisoSamples
    }
  },
  wrapS: {
    get: function() {
      return this._wrapS
    },
    set: function(v) {
      this.bind()
      if(wrapTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
      }
      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
      return this._wrapS = v
    }
  },
  wrapT: {
    get: function() {
      return this._wrapT
    },
    set: function(v) {
      this.bind()
      if(wrapTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
      }
      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
      return this._wrapT = v
    }
  },
  wrap: {
    get: function() {
      return this._wrapVector
    },
    set: function(v) {
      if(!Array.isArray(v)) {
        v = [v,v]
      }
      if(v.length !== 2) {
        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
      }
      for(var i=0; i<2; ++i) {
        if(wrapTypes.indexOf(v[i]) < 0) {
          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
        }
      }
      this._wrapS = v[0]
      this._wrapT = v[1]

      var gl = this.gl
      this.bind()
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)

      return v
    }
  },
  shape: {
    get: function() {
      return this._shapeVector
    },
    set: function(x) {
      if(!Array.isArray(x)) {
        x = [x|0,x|0]
      } else {
        if(x.length !== 2) {
          throw new Error('gl-texture2d: Invalid texture shape')
        }
      }
      reshapeTexture(this, x[0]|0, x[1]|0)
      return [x[0]|0, x[1]|0]
    }
  },
  width: {
    get: function() {
      return this._shape[0]
    },
    set: function(w) {
      w = w|0
      reshapeTexture(this, w, this._shape[1])
      return w
    }
  },
  height: {
    get: function() {
      return this._shape[1]
    },
    set: function(h) {
      h = h|0
      reshapeTexture(this, this._shape[0], h)
      return h
    }
  }
})

proto.bind = function(unit) {
  var gl = this.gl
  if(unit !== undefined) {
    gl.activeTexture(gl.TEXTURE0 + (unit|0))
  }
  gl.bindTexture(gl.TEXTURE_2D, this.handle)
  if(unit !== undefined) {
    return (unit|0)
  }
  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
}

proto.dispose = function() {
  this.gl.deleteTexture(this.handle)
}

proto.generateMipmap = function() {
  this.bind()
  this.gl.generateMipmap(this.gl.TEXTURE_2D)

  //Update mip levels
  var l = Math.min(this._shape[0], this._shape[1])
  for(var i=0; l>0; ++i, l>>>=1) {
    if(this._mipLevels.indexOf(i) < 0) {
      this._mipLevels.push(i)
    }
  }
}

proto.setPixels = function(data, x_off, y_off, mip_level) {
  var gl = this.gl
  this.bind()
  if(Array.isArray(x_off)) {
    mip_level = y_off
    y_off = x_off[1]|0
    x_off = x_off[0]|0
  } else {
    x_off = x_off || 0
    y_off = y_off || 0
  }
  mip_level = mip_level || 0
  var directData = acceptTextureDOM(data) ? data : data.raw
  if(directData) {
    var needsMip = this._mipLevels.indexOf(mip_level) < 0
    if(needsMip) {
      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, directData)
      this._mipLevels.push(mip_level)
    } else {
      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, directData)
    }
  } else if(data.shape && data.stride && data.data) {
    if(data.shape.length < 2 ||
       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
       x_off < 0 ||
       y_off < 0) {
      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
    }
    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
  } else {
    throw new Error('gl-texture2d: Unsupported data type')
  }
}


function isPacked(shape, stride) {
  if(shape.length === 3) {
    return  (stride[2] === 1) &&
            (stride[1] === shape[0]*shape[2]) &&
            (stride[0] === shape[2])
  }
  return  (stride[0] === 1) &&
          (stride[1] === shape[0])
}

function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
  var dtype = array.dtype
  var shape = array.shape.slice()
  if(shape.length < 2 || shape.length > 3) {
    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
  }
  var type = 0, format = 0
  var packed = isPacked(shape, array.stride.slice())
  if(dtype === 'float32') {
    type = gl.FLOAT
  } else if(dtype === 'float64') {
    type = gl.FLOAT
    packed = false
    dtype = 'float32'
  } else if(dtype === 'uint8') {
    type = gl.UNSIGNED_BYTE
  } else {
    type = gl.UNSIGNED_BYTE
    packed = false
    dtype = 'uint8'
  }
  var channels = 1
  if(shape.length === 2) {
    format = gl.LUMINANCE
    shape = [shape[0], shape[1], 1]
    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
  } else if(shape.length === 3) {
    if(shape[2] === 1) {
      format = gl.ALPHA
    } else if(shape[2] === 2) {
      format = gl.LUMINANCE_ALPHA
    } else if(shape[2] === 3) {
      format = gl.RGB
    } else if(shape[2] === 4) {
      format = gl.RGBA
    } else {
      throw new Error('gl-texture2d: Invalid shape for pixel coords')
    }
    channels = shape[2]
  } else {
    throw new Error('gl-texture2d: Invalid shape for texture')
  }
  //For 1-channel textures allow conversion between formats
  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
    format = cformat
  }
  if(format !== cformat) {
    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
  }
  var size = array.size
  var needsMip = mipLevels.indexOf(mip_level) < 0
  if(needsMip) {
    mipLevels.push(mip_level)
  }
  if(type === ctype && packed) {
    //Array data types are compatible, can directly copy into texture
    if(array.offset === 0 && array.data.length === size) {
      if(needsMip) {
        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
      } else {
        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
      }
    } else {
      if(needsMip) {
        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
      } else {
        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
      }
    }
  } else {
    //Need to do type conversion to pack data into buffer
    var pack_buffer
    if(ctype === gl.FLOAT) {
      pack_buffer = pool.mallocFloat32(size)
    } else {
      pack_buffer = pool.mallocUint8(size)
    }
    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
      convertFloatToUint8(pack_view, array)
    } else {
      ops.assign(pack_view, array)
    }
    if(needsMip) {
      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
    } else {
      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
    }
    if(ctype === gl.FLOAT) {
      pool.freeFloat32(pack_buffer)
    } else {
      pool.freeUint8(pack_buffer)
    }
  }
}

function initTexture(gl) {
  var tex = gl.createTexture()
  gl.bindTexture(gl.TEXTURE_2D, tex)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
  return tex
}

function createTextureShape(gl, width, height, format, type) {
  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
    throw new Error('gl-texture2d: Invalid texture shape')
  }
  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
  }
  var tex = initTexture(gl)
  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
  return new Texture2D(gl, tex, width, height, format, type)
}

function createTextureDOM(gl, directData, width, height, format, type) {
  var tex = initTexture(gl)
  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, directData)
  return new Texture2D(gl, tex, width, height, format, type)
}

//Creates a texture from an ndarray
function createTextureArray(gl, array) {
  var dtype = array.dtype
  var shape = array.shape.slice()
  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
    throw new Error('gl-texture2d: Invalid texture size')
  }
  var packed = isPacked(shape, array.stride.slice())
  var type = 0
  if(dtype === 'float32') {
    type = gl.FLOAT
  } else if(dtype === 'float64') {
    type = gl.FLOAT
    packed = false
    dtype = 'float32'
  } else if(dtype === 'uint8') {
    type = gl.UNSIGNED_BYTE
  } else {
    type = gl.UNSIGNED_BYTE
    packed = false
    dtype = 'uint8'
  }
  var format = 0
  if(shape.length === 2) {
    format = gl.LUMINANCE
    shape = [shape[0], shape[1], 1]
    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
  } else if(shape.length === 3) {
    if(shape[2] === 1) {
      format = gl.ALPHA
    } else if(shape[2] === 2) {
      format = gl.LUMINANCE_ALPHA
    } else if(shape[2] === 3) {
      format = gl.RGB
    } else if(shape[2] === 4) {
      format = gl.RGBA
    } else {
      throw new Error('gl-texture2d: Invalid shape for pixel coords')
    }
  } else {
    throw new Error('gl-texture2d: Invalid shape for texture')
  }
  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
    type = gl.UNSIGNED_BYTE
    packed = false
  }
  var buffer, buf_store
  var size = array.size
  if(!packed) {
    var stride = [shape[2], shape[2]*shape[0], 1]
    buf_store = pool.malloc(size, dtype)
    var buf_array = ndarray(buf_store, shape, stride, 0)
    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
      convertFloatToUint8(buf_array, array)
    } else {
      ops.assign(buf_array, array)
    }
    buffer = buf_store.subarray(0, size)
  } else if (array.offset === 0 && array.data.length === size) {
    buffer = array.data
  } else {
    buffer = array.data.subarray(array.offset, array.offset + size)
  }
  var tex = initTexture(gl)
  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
  if(!packed) {
    pool.free(buf_store)
  }
  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
}

function createTexture2D(gl) {
  if(arguments.length <= 1) {
    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
  }
  if(!linearTypes) {
    lazyInitLinearTypes(gl)
  }
  if(typeof arguments[1] === 'number') {
    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
  }
  if(Array.isArray(arguments[1])) {
    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
  }
  if(typeof arguments[1] === 'object') {
    var obj = arguments[1]
    var directData = acceptTextureDOM(obj) ? obj : obj.raw
    if (directData) {
      return createTextureDOM(gl, directData, obj.width|0, obj.height|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
    } else if(obj.shape && obj.data && obj.stride) {
      return createTextureArray(gl, obj)
    }
  }
  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
}

},{"ndarray":163,"ndarray-ops":162,"typedarray-pool":205}],141:[function(require,module,exports){
var tokenize = require('glsl-tokenizer')
var atob     = require('atob-lite')

module.exports = getName

function getName(src) {
  var tokens = Array.isArray(src)
    ? src
    : tokenize(src)

  for (var i = 0; i < tokens.length; i++) {
    var token = tokens[i]
    if (token.type !== 'preprocessor') continue
    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
    if (!match) continue
    if (!match[2]) continue

    var b64  = match[1]
    var name = match[2]

    return (b64 ? atob(name) : name).trim()
  }
}

},{"atob-lite":13,"glsl-tokenizer":148}],142:[function(require,module,exports){
module.exports = tokenize

var literals100 = require('./lib/literals')
  , operators = require('./lib/operators')
  , builtins100 = require('./lib/builtins')
  , literals300es = require('./lib/literals-300es')
  , builtins300es = require('./lib/builtins-300es')

var NORMAL = 999          // <-- never emitted
  , TOKEN = 9999          // <-- never emitted
  , BLOCK_COMMENT = 0
  , LINE_COMMENT = 1
  , PREPROCESSOR = 2
  , OPERATOR = 3
  , INTEGER = 4
  , FLOAT = 5
  , IDENT = 6
  , BUILTIN = 7
  , KEYWORD = 8
  , WHITESPACE = 9
  , EOF = 10
  , HEX = 11

var map = [
    'block-comment'
  , 'line-comment'
  , 'preprocessor'
  , 'operator'
  , 'integer'
  , 'float'
  , 'ident'
  , 'builtin'
  , 'keyword'
  , 'whitespace'
  , 'eof'
  , 'integer'
]

function tokenize(opt) {
  var i = 0
    , total = 0
    , mode = NORMAL
    , c
    , last
    , content = []
    , tokens = []
    , token_idx = 0
    , token_offs = 0
    , line = 1
    , col = 0
    , start = 0
    , isnum = false
    , isoperator = false
    , input = ''
    , len

  opt = opt || {}
  var allBuiltins = builtins100
  var allLiterals = literals100
  if (opt.version === '300 es') {
    allBuiltins = builtins300es
    allLiterals = literals300es
  }

  return function(data) {
    tokens = []
    if (data !== null) return write(data.replace ? data.replace(/\r\n/g, '\n') : data)
    return end()
  }

  function token(data) {
    if (data.length) {
      tokens.push({
        type: map[mode]
      , data: data
      , position: start
      , line: line
      , column: col
      })
    }
  }

  function write(chunk) {
    i = 0
    input += chunk
    len = input.length

    var last

    while(c = input[i], i < len) {
      last = i

      switch(mode) {
        case BLOCK_COMMENT: i = block_comment(); break
        case LINE_COMMENT: i = line_comment(); break
        case PREPROCESSOR: i = preprocessor(); break
        case OPERATOR: i = operator(); break
        case INTEGER: i = integer(); break
        case HEX: i = hex(); break
        case FLOAT: i = decimal(); break
        case TOKEN: i = readtoken(); break
        case WHITESPACE: i = whitespace(); break
        case NORMAL: i = normal(); break
      }

      if(last !== i) {
        switch(input[last]) {
          case '\n': col = 0; ++line; break
          default: ++col; break
        }
      }
    }

    total += i
    input = input.slice(i)
    return tokens
  }

  function end(chunk) {
    if(content.length) {
      token(content.join(''))
    }

    mode = EOF
    token('(eof)')
    return tokens
  }

  function normal() {
    content = content.length ? [] : content

    if(last === '/' && c === '*') {
      start = total + i - 1
      mode = BLOCK_COMMENT
      last = c
      return i + 1
    }

    if(last === '/' && c === '/') {
      start = total + i - 1
      mode = LINE_COMMENT
      last = c
      return i + 1
    }

    if(c === '#') {
      mode = PREPROCESSOR
      start = total + i
      return i
    }

    if(/\s/.test(c)) {
      mode = WHITESPACE
      start = total + i
      return i
    }

    isnum = /\d/.test(c)
    isoperator = /[^\w_]/.test(c)

    start = total + i
    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
    return i
  }

  function whitespace() {
    if(/[^\s]/g.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }
    content.push(c)
    last = c
    return i + 1
  }

  function preprocessor() {
    if((c === '\r' || c === '\n') && last !== '\\') {
      token(content.join(''))
      mode = NORMAL
      return i
    }
    content.push(c)
    last = c
    return i + 1
  }

  function line_comment() {
    return preprocessor()
  }

  function block_comment() {
    if(c === '/' && last === '*') {
      content.push(c)
      token(content.join(''))
      mode = NORMAL
      return i + 1
    }

    content.push(c)
    last = c
    return i + 1
  }

  function operator() {
    if(last === '.' && /\d/.test(c)) {
      mode = FLOAT
      return i
    }

    if(last === '/' && c === '*') {
      mode = BLOCK_COMMENT
      return i
    }

    if(last === '/' && c === '/') {
      mode = LINE_COMMENT
      return i
    }

    if(c === '.' && content.length) {
      while(determine_operator(content));

      mode = FLOAT
      return i
    }

    if(c === ';' || c === ')' || c === '(') {
      if(content.length) while(determine_operator(content));
      token(c)
      mode = NORMAL
      return i + 1
    }

    var is_composite_operator = content.length === 2 && c !== '='
    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
      while(determine_operator(content));
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function determine_operator(buf) {
    var j = 0
      , idx
      , res

    do {
      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
      res = operators[idx]

      if(idx === -1) {
        if(j-- + buf.length > 0) continue
        res = buf.slice(0, 1).join('')
      }

      token(res)

      start += res.length
      content = content.slice(res.length)
      return content.length
    } while(1)
  }

  function hex() {
    if(/[^a-fA-F0-9]/.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function integer() {
    if(c === '.') {
      content.push(c)
      mode = FLOAT
      last = c
      return i + 1
    }

    if(/[eE]/.test(c)) {
      content.push(c)
      mode = FLOAT
      last = c
      return i + 1
    }

    if(c === 'x' && content.length === 1 && content[0] === '0') {
      mode = HEX
      content.push(c)
      last = c
      return i + 1
    }

    if(/[^\d]/.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function decimal() {
    if(c === 'f') {
      content.push(c)
      last = c
      i += 1
    }

    if(/[eE]/.test(c)) {
      content.push(c)
      last = c
      return i + 1
    }

    if (c === '-' && /[eE]/.test(last)) {
      content.push(c)
      last = c
      return i + 1
    }

    if(/[^\d]/.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function readtoken() {
    if(/[^\d\w_]/.test(c)) {
      var contentstr = content.join('')
      if(allLiterals.indexOf(contentstr) > -1) {
        mode = KEYWORD
      } else if(allBuiltins.indexOf(contentstr) > -1) {
        mode = BUILTIN
      } else {
        mode = IDENT
      }
      token(content.join(''))
      mode = NORMAL
      return i
    }
    content.push(c)
    last = c
    return i + 1
  }
}

},{"./lib/builtins":144,"./lib/builtins-300es":143,"./lib/literals":146,"./lib/literals-300es":145,"./lib/operators":147}],143:[function(require,module,exports){
// 300es builtins/reserved words that were previously valid in v100
var v100 = require('./builtins')

// The texture2D|Cube functions have been removed
// And the gl_ features are updated
v100 = v100.slice().filter(function (b) {
  return !/^(gl\_|texture)/.test(b)
})

module.exports = v100.concat([
  // the updated gl_ constants
    'gl_VertexID'
  , 'gl_InstanceID'
  , 'gl_Position'
  , 'gl_PointSize'
  , 'gl_FragCoord'
  , 'gl_FrontFacing'
  , 'gl_FragDepth'
  , 'gl_PointCoord'
  , 'gl_MaxVertexAttribs'
  , 'gl_MaxVertexUniformVectors'
  , 'gl_MaxVertexOutputVectors'
  , 'gl_MaxFragmentInputVectors'
  , 'gl_MaxVertexTextureImageUnits'
  , 'gl_MaxCombinedTextureImageUnits'
  , 'gl_MaxTextureImageUnits'
  , 'gl_MaxFragmentUniformVectors'
  , 'gl_MaxDrawBuffers'
  , 'gl_MinProgramTexelOffset'
  , 'gl_MaxProgramTexelOffset'
  , 'gl_DepthRangeParameters'
  , 'gl_DepthRange'

  // other builtins
  , 'trunc'
  , 'round'
  , 'roundEven'
  , 'isnan'
  , 'isinf'
  , 'floatBitsToInt'
  , 'floatBitsToUint'
  , 'intBitsToFloat'
  , 'uintBitsToFloat'
  , 'packSnorm2x16'
  , 'unpackSnorm2x16'
  , 'packUnorm2x16'
  , 'unpackUnorm2x16'
  , 'packHalf2x16'
  , 'unpackHalf2x16'
  , 'outerProduct'
  , 'transpose'
  , 'determinant'
  , 'inverse'
  , 'texture'
  , 'textureSize'
  , 'textureProj'
  , 'textureLod'
  , 'textureOffset'
  , 'texelFetch'
  , 'texelFetchOffset'
  , 'textureProjOffset'
  , 'textureLodOffset'
  , 'textureProjLod'
  , 'textureProjLodOffset'
  , 'textureGrad'
  , 'textureGradOffset'
  , 'textureProjGrad'
  , 'textureProjGradOffset'
])

},{"./builtins":144}],144:[function(require,module,exports){
module.exports = [
  // Keep this list sorted
  'abs'
  , 'acos'
  , 'all'
  , 'any'
  , 'asin'
  , 'atan'
  , 'ceil'
  , 'clamp'
  , 'cos'
  , 'cross'
  , 'dFdx'
  , 'dFdy'
  , 'degrees'
  , 'distance'
  , 'dot'
  , 'equal'
  , 'exp'
  , 'exp2'
  , 'faceforward'
  , 'floor'
  , 'fract'
  , 'gl_BackColor'
  , 'gl_BackLightModelProduct'
  , 'gl_BackLightProduct'
  , 'gl_BackMaterial'
  , 'gl_BackSecondaryColor'
  , 'gl_ClipPlane'
  , 'gl_ClipVertex'
  , 'gl_Color'
  , 'gl_DepthRange'
  , 'gl_DepthRangeParameters'
  , 'gl_EyePlaneQ'
  , 'gl_EyePlaneR'
  , 'gl_EyePlaneS'
  , 'gl_EyePlaneT'
  , 'gl_Fog'
  , 'gl_FogCoord'
  , 'gl_FogFragCoord'
  , 'gl_FogParameters'
  , 'gl_FragColor'
  , 'gl_FragCoord'
  , 'gl_FragData'
  , 'gl_FragDepth'
  , 'gl_FragDepthEXT'
  , 'gl_FrontColor'
  , 'gl_FrontFacing'
  , 'gl_FrontLightModelProduct'
  , 'gl_FrontLightProduct'
  , 'gl_FrontMaterial'
  , 'gl_FrontSecondaryColor'
  , 'gl_LightModel'
  , 'gl_LightModelParameters'
  , 'gl_LightModelProducts'
  , 'gl_LightProducts'
  , 'gl_LightSource'
  , 'gl_LightSourceParameters'
  , 'gl_MaterialParameters'
  , 'gl_MaxClipPlanes'
  , 'gl_MaxCombinedTextureImageUnits'
  , 'gl_MaxDrawBuffers'
  , 'gl_MaxFragmentUniformComponents'
  , 'gl_MaxLights'
  , 'gl_MaxTextureCoords'
  , 'gl_MaxTextureImageUnits'
  , 'gl_MaxTextureUnits'
  , 'gl_MaxVaryingFloats'
  , 'gl_MaxVertexAttribs'
  , 'gl_MaxVertexTextureImageUnits'
  , 'gl_MaxVertexUniformComponents'
  , 'gl_ModelViewMatrix'
  , 'gl_ModelViewMatrixInverse'
  , 'gl_ModelViewMatrixInverseTranspose'
  , 'gl_ModelViewMatrixTranspose'
  , 'gl_ModelViewProjectionMatrix'
  , 'gl_ModelViewProjectionMatrixInverse'
  , 'gl_ModelViewProjectionMatrixInverseTranspose'
  , 'gl_ModelViewProjectionMatrixTranspose'
  , 'gl_MultiTexCoord0'
  , 'gl_MultiTexCoord1'
  , 'gl_MultiTexCoord2'
  , 'gl_MultiTexCoord3'
  , 'gl_MultiTexCoord4'
  , 'gl_MultiTexCoord5'
  , 'gl_MultiTexCoord6'
  , 'gl_MultiTexCoord7'
  , 'gl_Normal'
  , 'gl_NormalMatrix'
  , 'gl_NormalScale'
  , 'gl_ObjectPlaneQ'
  , 'gl_ObjectPlaneR'
  , 'gl_ObjectPlaneS'
  , 'gl_ObjectPlaneT'
  , 'gl_Point'
  , 'gl_PointCoord'
  , 'gl_PointParameters'
  , 'gl_PointSize'
  , 'gl_Position'
  , 'gl_ProjectionMatrix'
  , 'gl_ProjectionMatrixInverse'
  , 'gl_ProjectionMatrixInverseTranspose'
  , 'gl_ProjectionMatrixTranspose'
  , 'gl_SecondaryColor'
  , 'gl_TexCoord'
  , 'gl_TextureEnvColor'
  , 'gl_TextureMatrix'
  , 'gl_TextureMatrixInverse'
  , 'gl_TextureMatrixInverseTranspose'
  , 'gl_TextureMatrixTranspose'
  , 'gl_Vertex'
  , 'greaterThan'
  , 'greaterThanEqual'
  , 'inversesqrt'
  , 'length'
  , 'lessThan'
  , 'lessThanEqual'
  , 'log'
  , 'log2'
  , 'matrixCompMult'
  , 'max'
  , 'min'
  , 'mix'
  , 'mod'
  , 'normalize'
  , 'not'
  , 'notEqual'
  , 'pow'
  , 'radians'
  , 'reflect'
  , 'refract'
  , 'sign'
  , 'sin'
  , 'smoothstep'
  , 'sqrt'
  , 'step'
  , 'tan'
  , 'texture2D'
  , 'texture2DLod'
  , 'texture2DProj'
  , 'texture2DProjLod'
  , 'textureCube'
  , 'textureCubeLod'
  , 'texture2DLodEXT'
  , 'texture2DProjLodEXT'
  , 'textureCubeLodEXT'
  , 'texture2DGradEXT'
  , 'texture2DProjGradEXT'
  , 'textureCubeGradEXT'
]

},{}],145:[function(require,module,exports){
var v100 = require('./literals')

module.exports = v100.slice().concat([
   'layout'
  , 'centroid'
  , 'smooth'
  , 'case'
  , 'mat2x2'
  , 'mat2x3'
  , 'mat2x4'
  , 'mat3x2'
  , 'mat3x3'
  , 'mat3x4'
  , 'mat4x2'
  , 'mat4x3'
  , 'mat4x4'
  , 'uint'
  , 'uvec2'
  , 'uvec3'
  , 'uvec4'
  , 'samplerCubeShadow'
  , 'sampler2DArray'
  , 'sampler2DArrayShadow'
  , 'isampler2D'
  , 'isampler3D'
  , 'isamplerCube'
  , 'isampler2DArray'
  , 'usampler2D'
  , 'usampler3D'
  , 'usamplerCube'
  , 'usampler2DArray'
  , 'coherent'
  , 'restrict'
  , 'readonly'
  , 'writeonly'
  , 'resource'
  , 'atomic_uint'
  , 'noperspective'
  , 'patch'
  , 'sample'
  , 'subroutine'
  , 'common'
  , 'partition'
  , 'active'
  , 'filter'
  , 'image1D'
  , 'image2D'
  , 'image3D'
  , 'imageCube'
  , 'iimage1D'
  , 'iimage2D'
  , 'iimage3D'
  , 'iimageCube'
  , 'uimage1D'
  , 'uimage2D'
  , 'uimage3D'
  , 'uimageCube'
  , 'image1DArray'
  , 'image2DArray'
  , 'iimage1DArray'
  , 'iimage2DArray'
  , 'uimage1DArray'
  , 'uimage2DArray'
  , 'image1DShadow'
  , 'image2DShadow'
  , 'image1DArrayShadow'
  , 'image2DArrayShadow'
  , 'imageBuffer'
  , 'iimageBuffer'
  , 'uimageBuffer'
  , 'sampler1DArray'
  , 'sampler1DArrayShadow'
  , 'isampler1D'
  , 'isampler1DArray'
  , 'usampler1D'
  , 'usampler1DArray'
  , 'isampler2DRect'
  , 'usampler2DRect'
  , 'samplerBuffer'
  , 'isamplerBuffer'
  , 'usamplerBuffer'
  , 'sampler2DMS'
  , 'isampler2DMS'
  , 'usampler2DMS'
  , 'sampler2DMSArray'
  , 'isampler2DMSArray'
  , 'usampler2DMSArray'
])

},{"./literals":146}],146:[function(require,module,exports){
module.exports = [
  // current
    'precision'
  , 'highp'
  , 'mediump'
  , 'lowp'
  , 'attribute'
  , 'const'
  , 'uniform'
  , 'varying'
  , 'break'
  , 'continue'
  , 'do'
  , 'for'
  , 'while'
  , 'if'
  , 'else'
  , 'in'
  , 'out'
  , 'inout'
  , 'float'
  , 'int'
  , 'void'
  , 'bool'
  , 'true'
  , 'false'
  , 'discard'
  , 'return'
  , 'mat2'
  , 'mat3'
  , 'mat4'
  , 'vec2'
  , 'vec3'
  , 'vec4'
  , 'ivec2'
  , 'ivec3'
  , 'ivec4'
  , 'bvec2'
  , 'bvec3'
  , 'bvec4'
  , 'sampler1D'
  , 'sampler2D'
  , 'sampler3D'
  , 'samplerCube'
  , 'sampler1DShadow'
  , 'sampler2DShadow'
  , 'struct'

  // future
  , 'asm'
  , 'class'
  , 'union'
  , 'enum'
  , 'typedef'
  , 'template'
  , 'this'
  , 'packed'
  , 'goto'
  , 'switch'
  , 'default'
  , 'inline'
  , 'noinline'
  , 'volatile'
  , 'public'
  , 'static'
  , 'extern'
  , 'external'
  , 'interface'
  , 'long'
  , 'short'
  , 'double'
  , 'half'
  , 'fixed'
  , 'unsigned'
  , 'input'
  , 'output'
  , 'hvec2'
  , 'hvec3'
  , 'hvec4'
  , 'dvec2'
  , 'dvec3'
  , 'dvec4'
  , 'fvec2'
  , 'fvec3'
  , 'fvec4'
  , 'sampler2DRect'
  , 'sampler3DRect'
  , 'sampler2DRectShadow'
  , 'sizeof'
  , 'cast'
  , 'namespace'
  , 'using'
]

},{}],147:[function(require,module,exports){
module.exports = [
    '<<='
  , '>>='
  , '++'
  , '--'
  , '<<'
  , '>>'
  , '<='
  , '>='
  , '=='
  , '!='
  , '&&'
  , '||'
  , '+='
  , '-='
  , '*='
  , '/='
  , '%='
  , '&='
  , '^^'
  , '^='
  , '|='
  , '('
  , ')'
  , '['
  , ']'
  , '.'
  , '!'
  , '~'
  , '*'
  , '/'
  , '%'
  , '+'
  , '-'
  , '<'
  , '>'
  , '&'
  , '^'
  , '|'
  , '?'
  , ':'
  , '='
  , ','
  , ';'
  , '{'
  , '}'
]

},{}],148:[function(require,module,exports){
var tokenize = require('./index')

module.exports = tokenizeString

function tokenizeString(str, opt) {
  var generator = tokenize(opt)
  var tokens = []

  tokens = tokens.concat(generator(str))
  tokens = tokens.concat(generator(null))

  return tokens
}

},{"./index":142}],149:[function(require,module,exports){
(function (global){
'use strict'

var isBrowser = require('is-browser')
var hasHover

if (typeof global.matchMedia === 'function') {
	hasHover = !global.matchMedia('(hover: none)').matches
}
else {
	hasHover = isBrowser
}

module.exports = hasHover

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"is-browser":154}],150:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],151:[function(require,module,exports){
"use strict"

var bounds = require("binary-search-bounds")

var NOT_FOUND = 0
var SUCCESS = 1
var EMPTY = 2

module.exports = createWrapper

function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
  this.mid = mid
  this.left = left
  this.right = right
  this.leftPoints = leftPoints
  this.rightPoints = rightPoints
  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
}

var proto = IntervalTreeNode.prototype

function copy(a, b) {
  a.mid = b.mid
  a.left = b.left
  a.right = b.right
  a.leftPoints = b.leftPoints
  a.rightPoints = b.rightPoints
  a.count = b.count
}

function rebuild(node, intervals) {
  var ntree = createIntervalTree(intervals)
  node.mid = ntree.mid
  node.left = ntree.left
  node.right = ntree.right
  node.leftPoints = ntree.leftPoints
  node.rightPoints = ntree.rightPoints
  node.count = ntree.count
}

function rebuildWithInterval(node, interval) {
  var intervals = node.intervals([])
  intervals.push(interval)
  rebuild(node, intervals)    
}

function rebuildWithoutInterval(node, interval) {
  var intervals = node.intervals([])
  var idx = intervals.indexOf(interval)
  if(idx < 0) {
    return NOT_FOUND
  }
  intervals.splice(idx, 1)
  rebuild(node, intervals)
  return SUCCESS
}

proto.intervals = function(result) {
  result.push.apply(result, this.leftPoints)
  if(this.left) {
    this.left.intervals(result)
  }
  if(this.right) {
    this.right.intervals(result)
  }
  return result
}

proto.insert = function(interval) {
  var weight = this.count - this.leftPoints.length
  this.count += 1
  if(interval[1] < this.mid) {
    if(this.left) {
      if(4*(this.left.count+1) > 3*(weight+1)) {
        rebuildWithInterval(this, interval)
      } else {
        this.left.insert(interval)
      }
    } else {
      this.left = createIntervalTree([interval])
    }
  } else if(interval[0] > this.mid) {
    if(this.right) {
      if(4*(this.right.count+1) > 3*(weight+1)) {
        rebuildWithInterval(this, interval)
      } else {
        this.right.insert(interval)
      }
    } else {
      this.right = createIntervalTree([interval])
    }
  } else {
    var l = bounds.ge(this.leftPoints, interval, compareBegin)
    var r = bounds.ge(this.rightPoints, interval, compareEnd)
    this.leftPoints.splice(l, 0, interval)
    this.rightPoints.splice(r, 0, interval)
  }
}

proto.remove = function(interval) {
  var weight = this.count - this.leftPoints
  if(interval[1] < this.mid) {
    if(!this.left) {
      return NOT_FOUND
    }
    var rw = this.right ? this.right.count : 0
    if(4 * rw > 3 * (weight-1)) {
      return rebuildWithoutInterval(this, interval)
    }
    var r = this.left.remove(interval)
    if(r === EMPTY) {
      this.left = null
      this.count -= 1
      return SUCCESS
    } else if(r === SUCCESS) {
      this.count -= 1
    }
    return r
  } else if(interval[0] > this.mid) {
    if(!this.right) {
      return NOT_FOUND
    }
    var lw = this.left ? this.left.count : 0
    if(4 * lw > 3 * (weight-1)) {
      return rebuildWithoutInterval(this, interval)
    }
    var r = this.right.remove(interval)
    if(r === EMPTY) {
      this.right = null
      this.count -= 1
      return SUCCESS
    } else if(r === SUCCESS) {
      this.count -= 1
    }
    return r
  } else {
    if(this.count === 1) {
      if(this.leftPoints[0] === interval) {
        return EMPTY
      } else {
        return NOT_FOUND
      }
    }
    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
      if(this.left && this.right) {
        var p = this
        var n = this.left
        while(n.right) {
          p = n
          n = n.right
        }
        if(p === this) {
          n.right = this.right
        } else {
          var l = this.left
          var r = this.right
          p.count -= n.count
          p.right = n.left
          n.left = l
          n.right = r
        }
        copy(this, n)
        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
      } else if(this.left) {
        copy(this, this.left)
      } else {
        copy(this, this.right)
      }
      return SUCCESS
    }
    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
      if(this.leftPoints[l][0] !== interval[0]) {
        break
      }
      if(this.leftPoints[l] === interval) {
        this.count -= 1
        this.leftPoints.splice(l, 1)
        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
          if(this.rightPoints[r][1] !== interval[1]) {
            break
          } else if(this.rightPoints[r] === interval) {
            this.rightPoints.splice(r, 1)
            return SUCCESS
          }
        }
      }
    }
    return NOT_FOUND
  }
}

function reportLeftRange(arr, hi, cb) {
  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
    var r = cb(arr[i])
    if(r) { return r }
  }
}

function reportRightRange(arr, lo, cb) {
  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
    var r = cb(arr[i])
    if(r) { return r }
  }
}

function reportRange(arr, cb) {
  for(var i=0; i<arr.length; ++i) {
    var r = cb(arr[i])
    if(r) { return r }
  }
}

proto.queryPoint = function(x, cb) {
  if(x < this.mid) {
    if(this.left) {
      var r = this.left.queryPoint(x, cb)
      if(r) { return r }
    }
    return reportLeftRange(this.leftPoints, x, cb)
  } else if(x > this.mid) {
    if(this.right) {
      var r = this.right.queryPoint(x, cb)
      if(r) { return r }
    }
    return reportRightRange(this.rightPoints, x, cb)
  } else {
    return reportRange(this.leftPoints, cb)
  }
}

proto.queryInterval = function(lo, hi, cb) {
  if(lo < this.mid && this.left) {
    var r = this.left.queryInterval(lo, hi, cb)
    if(r) { return r }
  }
  if(hi > this.mid && this.right) {
    var r = this.right.queryInterval(lo, hi, cb)
    if(r) { return r }
  }
  if(hi < this.mid) {
    return reportLeftRange(this.leftPoints, hi, cb)
  } else if(lo > this.mid) {
    return reportRightRange(this.rightPoints, lo, cb)
  } else {
    return reportRange(this.leftPoints, cb)
  }
}

function compareNumbers(a, b) {
  return a - b
}

function compareBegin(a, b) {
  var d = a[0] - b[0]
  if(d) { return d }
  return a[1] - b[1]
}

function compareEnd(a, b) {
  var d = a[1] - b[1]
  if(d) { return d }
  return a[0] - b[0]
}

function createIntervalTree(intervals) {
  if(intervals.length === 0) {
    return null
  }
  var pts = []
  for(var i=0; i<intervals.length; ++i) {
    pts.push(intervals[i][0], intervals[i][1])
  }
  pts.sort(compareNumbers)

  var mid = pts[pts.length>>1]

  var leftIntervals = []
  var rightIntervals = []
  var centerIntervals = []
  for(var i=0; i<intervals.length; ++i) {
    var s = intervals[i]
    if(s[1] < mid) {
      leftIntervals.push(s)
    } else if(mid < s[0]) {
      rightIntervals.push(s)
    } else {
      centerIntervals.push(s)
    }
  }

  //Split center intervals
  var leftPoints = centerIntervals
  var rightPoints = centerIntervals.slice()
  leftPoints.sort(compareBegin)
  rightPoints.sort(compareEnd)

  return new IntervalTreeNode(mid, 
    createIntervalTree(leftIntervals),
    createIntervalTree(rightIntervals),
    leftPoints,
    rightPoints)
}

//User friendly wrapper that makes it possible to support empty trees
function IntervalTree(root) {
  this.root = root
}

var tproto = IntervalTree.prototype

tproto.insert = function(interval) {
  if(this.root) {
    this.root.insert(interval)
  } else {
    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
  }
}

tproto.remove = function(interval) {
  if(this.root) {
    var r = this.root.remove(interval)
    if(r === EMPTY) {
      this.root = null
    }
    return r !== NOT_FOUND
  }
  return false
}

tproto.queryPoint = function(p, cb) {
  if(this.root) {
    return this.root.queryPoint(p, cb)
  }
}

tproto.queryInterval = function(lo, hi, cb) {
  if(lo <= hi && this.root) {
    return this.root.queryInterval(lo, hi, cb)
  }
}

Object.defineProperty(tproto, "count", {
  get: function() {
    if(this.root) {
      return this.root.count
    }
    return 0
  }
})

Object.defineProperty(tproto, "intervals", {
  get: function() {
    if(this.root) {
      return this.root.intervals([])
    }
    return []
  }
})

function createWrapper(intervals) {
  if(!intervals || intervals.length === 0) {
    return new IntervalTree(null)
  }
  return new IntervalTree(createIntervalTree(intervals))
}

},{"binary-search-bounds":30}],152:[function(require,module,exports){
"use strict"

function invertPermutation(pi, result) {
  result = result || new Array(pi.length)
  for(var i=0; i<pi.length; ++i) {
    result[pi[i]] = i
  }
  return result
}

module.exports = invertPermutation
},{}],153:[function(require,module,exports){
"use strict"

function iota(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = i
  }
  return result
}

module.exports = iota
},{}],154:[function(require,module,exports){
module.exports = true;
},{}],155:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],156:[function(require,module,exports){
'use strict';
var toString = Object.prototype.toString;

module.exports = function (x) {
	var prototype;
	return toString.call(x) === '[object Object]' && (prototype = Object.getPrototypeOf(x), prototype === null || prototype === Object.getPrototypeOf({}));
};

},{}],157:[function(require,module,exports){
'use strict'

module.exports = mouseListen

var mouse = require('mouse-event')

function mouseListen (element, callback) {
  if (!callback) {
    callback = element
    element = window
  }

  var buttonState = 0
  var x = 0
  var y = 0
  var mods = {
    shift: false,
    alt: false,
    control: false,
    meta: false
  }
  var attached = false

  function updateMods (ev) {
    var changed = false
    if ('altKey' in ev) {
      changed = changed || ev.altKey !== mods.alt
      mods.alt = !!ev.altKey
    }
    if ('shiftKey' in ev) {
      changed = changed || ev.shiftKey !== mods.shift
      mods.shift = !!ev.shiftKey
    }
    if ('ctrlKey' in ev) {
      changed = changed || ev.ctrlKey !== mods.control
      mods.control = !!ev.ctrlKey
    }
    if ('metaKey' in ev) {
      changed = changed || ev.metaKey !== mods.meta
      mods.meta = !!ev.metaKey
    }
    return changed
  }

  function handleEvent (nextButtons, ev) {
    var nextX = mouse.x(ev)
    var nextY = mouse.y(ev)
    if ('buttons' in ev) {
      nextButtons = ev.buttons | 0
    }
    if (nextButtons !== buttonState ||
      nextX !== x ||
      nextY !== y ||
      updateMods(ev)) {
      buttonState = nextButtons | 0
      x = nextX || 0
      y = nextY || 0
      callback && callback(buttonState, x, y, mods)
    }
  }

  function clearState (ev) {
    handleEvent(0, ev)
  }

  function handleBlur () {
    if (buttonState ||
      x ||
      y ||
      mods.shift ||
      mods.alt ||
      mods.meta ||
      mods.control) {
      x = y = 0
      buttonState = 0
      mods.shift = mods.alt = mods.control = mods.meta = false
      callback && callback(0, 0, 0, mods)
    }
  }

  function handleMods (ev) {
    if (updateMods(ev)) {
      callback && callback(buttonState, x, y, mods)
    }
  }

  function handleMouseMove (ev) {
    if (mouse.buttons(ev) === 0) {
      handleEvent(0, ev)
    } else {
      handleEvent(buttonState, ev)
    }
  }

  function handleMouseDown (ev) {
    handleEvent(buttonState | mouse.buttons(ev), ev)
  }

  function handleMouseUp (ev) {
    handleEvent(buttonState & ~mouse.buttons(ev), ev)
  }

  function attachListeners () {
    if (attached) {
      return
    }
    attached = true

    element.addEventListener('mousemove', handleMouseMove)

    element.addEventListener('mousedown', handleMouseDown)

    element.addEventListener('mouseup', handleMouseUp)

    element.addEventListener('mouseleave', clearState)
    element.addEventListener('mouseenter', clearState)
    element.addEventListener('mouseout', clearState)
    element.addEventListener('mouseover', clearState)

    element.addEventListener('blur', handleBlur)

    element.addEventListener('keyup', handleMods)
    element.addEventListener('keydown', handleMods)
    element.addEventListener('keypress', handleMods)

    if (element !== window) {
      window.addEventListener('blur', handleBlur)

      window.addEventListener('keyup', handleMods)
      window.addEventListener('keydown', handleMods)
      window.addEventListener('keypress', handleMods)
    }
  }

  function detachListeners () {
    if (!attached) {
      return
    }
    attached = false

    element.removeEventListener('mousemove', handleMouseMove)

    element.removeEventListener('mousedown', handleMouseDown)

    element.removeEventListener('mouseup', handleMouseUp)

    element.removeEventListener('mouseleave', clearState)
    element.removeEventListener('mouseenter', clearState)
    element.removeEventListener('mouseout', clearState)
    element.removeEventListener('mouseover', clearState)

    element.removeEventListener('blur', handleBlur)

    element.removeEventListener('keyup', handleMods)
    element.removeEventListener('keydown', handleMods)
    element.removeEventListener('keypress', handleMods)

    if (element !== window) {
      window.removeEventListener('blur', handleBlur)

      window.removeEventListener('keyup', handleMods)
      window.removeEventListener('keydown', handleMods)
      window.removeEventListener('keypress', handleMods)
    }
  }

  // Attach listeners
  attachListeners()

  var result = {
    element: element
  }

  Object.defineProperties(result, {
    enabled: {
      get: function () { return attached },
      set: function (f) {
        if (f) {
          attachListeners()
        } else {
          detachListeners()
        }
      },
      enumerable: true
    },
    buttons: {
      get: function () { return buttonState },
      enumerable: true
    },
    x: {
      get: function () { return x },
      enumerable: true
    },
    y: {
      get: function () { return y },
      enumerable: true
    },
    mods: {
      get: function () { return mods },
      enumerable: true
    }
  })

  return result
}

},{"mouse-event":159}],158:[function(require,module,exports){
var rootPosition = { left: 0, top: 0 }

module.exports = mouseEventOffset
function mouseEventOffset (ev, target, out) {
  target = target || ev.currentTarget || ev.srcElement
  if (!Array.isArray(out)) {
    out = [ 0, 0 ]
  }
  var cx = ev.clientX || 0
  var cy = ev.clientY || 0
  var rect = getBoundingClientOffset(target)
  out[0] = cx - rect.left
  out[1] = cy - rect.top
  return out
}

function getBoundingClientOffset (element) {
  if (element === window ||
      element === document ||
      element === document.body) {
    return rootPosition
  } else {
    return element.getBoundingClientRect()
  }
}

},{}],159:[function(require,module,exports){
'use strict'

function mouseButtons(ev) {
  if(typeof ev === 'object') {
    if('buttons' in ev) {
      return ev.buttons
    } else if('which' in ev) {
      var b = ev.which
      if(b === 2) {
        return 4
      } else if(b === 3) {
        return 2
      } else if(b > 0) {
        return 1<<(b-1)
      }
    } else if('button' in ev) {
      var b = ev.button
      if(b === 1) {
        return 4
      } else if(b === 2) {
        return 2
      } else if(b >= 0) {
        return 1<<b
      }
    }
  }
  return 0
}
exports.buttons = mouseButtons

function mouseElement(ev) {
  return ev.target || ev.srcElement || window
}
exports.element = mouseElement

function mouseRelativeX(ev) {
  if(typeof ev === 'object') {
    if('offsetX' in ev) {
      return ev.offsetX
    }
    var target = mouseElement(ev)
    var bounds = target.getBoundingClientRect()
    return ev.clientX - bounds.left
  }
  return 0
}
exports.x = mouseRelativeX

function mouseRelativeY(ev) {
  if(typeof ev === 'object') {
    if('offsetY' in ev) {
      return ev.offsetY
    }
    var target = mouseElement(ev)
    var bounds = target.getBoundingClientRect()
    return ev.clientY - bounds.top
  }
  return 0
}
exports.y = mouseRelativeY

},{}],160:[function(require,module,exports){
'use strict'

var toPX = require('to-px')

module.exports = mouseWheelListen

function mouseWheelListen(element, callback, noScroll) {
  if(typeof element === 'function') {
    noScroll = !!callback
    callback = element
    element = window
  }
  var lineHeight = toPX('ex', element)
  var listener = function(ev) {
    if(noScroll) {
      ev.preventDefault()
    }
    var dx = ev.deltaX || 0
    var dy = ev.deltaY || 0
    var dz = ev.deltaZ || 0
    var mode = ev.deltaMode
    var scale = 1
    switch(mode) {
      case 1:
        scale = lineHeight
      break
      case 2:
        scale = window.innerHeight
      break
    }
    dx *= scale
    dy *= scale
    dz *= scale
    if(dx || dy || dz) {
      return callback(dx, dy, dz, ev)
    }
  }
  element.addEventListener('wheel', listener)
  return listener
}

},{"to-px":201}],161:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")

module.exports = createSurfaceExtractor

//Helper macros
function array(i) {
  return "a" + i
}
function data(i) {
  return "d" + i
}
function cube(i,bitmask) {
  return "c" + i + "_" + bitmask
}
function shape(i) {
  return "s" + i
}
function stride(i,j) {
  return "t" + i + "_" + j
}
function offset(i) {
  return "o" + i
}
function scalar(i) {
  return "x" + i
}
function pointer(i) {
  return "p" + i
}
function delta(i,bitmask) {
  return "d" + i + "_" + bitmask
}
function index(i) {
  return "i" + i
}
function step(i,j) {
  return "u" + i + "_" + j
}
function pcube(bitmask) {
  return "b" + bitmask
}
function qcube(bitmask) {
  return "y" + bitmask
}
function pdelta(bitmask) {
  return "e" + bitmask
}
function vert(i) {
  return "v" + i
}
var VERTEX_IDS = "V"
var PHASES = "P"
var VERTEX_COUNT = "N"
var POOL_SIZE = "Q"
var POINTER = "X"
var TEMPORARY = "T"

function permBitmask(dimension, mask, order) {
  var r = 0
  for(var i=0; i<dimension; ++i) {
    if(mask & (1<<i)) {
      r |= (1<<order[i])
    }
  }
  return r
}

//Generates the surface procedure
function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
  var arrayArgs = typesig.length
  var dimension = order.length

  if(dimension < 2) {
    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
  }

  var funcName = "extractContour" + order.join("_")
  var code = []
  var vars = []
  var args = []

  //Assemble arguments
  for(var i=0; i<arrayArgs; ++i) {
    args.push(array(i))  
  }
  for(var i=0; i<scalarArgs; ++i) {
    args.push(scalar(i))
  }

  //Shape
  for(var i=0; i<dimension; ++i) {
    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
  }
  //Data, stride, offset pointers
  for(var i=0; i<arrayArgs; ++i) {
    vars.push(data(i) + "=" + array(i) + ".data",
              offset(i) + "=" + array(i) + ".offset|0")
    for(var j=0; j<dimension; ++j) {
      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
    }
  }
  //Pointer, delta and cube variables
  for(var i=0; i<arrayArgs; ++i) {
    vars.push(pointer(i) + "=" + offset(i))
    vars.push(cube(i,0))
    for(var j=1; j<(1<<dimension); ++j) {
      var ptrStr = []
      for(var k=0; k<dimension; ++k) {
        if(j & (1<<k)) {
          ptrStr.push("-" + stride(i,k))
        }
      }
      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
      vars.push(cube(i,j) + "=0")
    }
  }
  //Create step variables
  for(var i=0; i<arrayArgs; ++i) {
    for(var j=0; j<dimension; ++j) {
      var stepVal = [ stride(i,order[j]) ]
      if(j > 0) {
        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
      }
      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
    }
  }
  //Create index variables
  for(var i=0; i<dimension; ++i) {
    vars.push(index(i) + "=0")
  }
  //Vertex count
  vars.push(VERTEX_COUNT + "=0")
  //Compute pool size, initialize pool step
  var sizeVariable = ["2"]
  for(var i=dimension-2; i>=0; --i) {
    sizeVariable.push(shape(order[i]))
  }
  //Previous phases and vertex_ids
  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
            POINTER + "=0")
  //Create cube variables for phases
  vars.push(pcube(0) + "=0")
  for(var j=1; j<(1<<dimension); ++j) {
    var cubeDelta = []
    var cubeStep = [ ]
    for(var k=0; k<dimension; ++k) {
      if(j & (1<<k)) {
        if(cubeStep.length === 0) {
          cubeDelta.push("1")
        } else {
          cubeDelta.unshift(cubeStep.join("*"))
        }
      }
      cubeStep.push(shape(order[k]))
    }
    var signFlag = ""
    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
      signFlag = "-"
    }
    var jperm = permBitmask(dimension, j, order)
    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
              pcube(jperm) + "=0")
  }
  vars.push(vert(0) + "=0", TEMPORARY + "=0")

  function forLoopBegin(i, start) {
    code.push("for(", index(order[i]), "=", start, ";",
      index(order[i]), "<", shape(order[i]), ";",
      "++", index(order[i]), "){")
  }

  function forLoopEnd(i) {
    for(var j=0; j<arrayArgs; ++j) {
      code.push(pointer(j), "+=", step(j,order[i]), ";")
    }
    code.push("}")
  }

  function fillEmptySlice(k) {
    for(var i=k-1; i>=0; --i) {
      forLoopBegin(i, 0) 
    }
    var phaseFuncArgs = []
    for(var i=0; i<arrayArgs; ++i) {
      if(typesig[i]) {
        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
      } else {
        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
      }
    }
    for(var i=0; i<scalarArgs; ++i) {
      phaseFuncArgs.push(scalar(i))
    }
    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
    for(var i=0; i<k; ++i) {
      forLoopEnd(i)
    }
    for(var j=0; j<arrayArgs; ++j) {
      code.push(pointer(j), "+=", step(j,order[k]), ";")
    }
  }

  function processGridCell(mask) {
    //Read in local data
    for(var i=0; i<arrayArgs; ++i) {
      if(typesig[i]) {
        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
      } else {
        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
      }
    }

    //Read in phase
    var phaseFuncArgs = []
    for(var i=0; i<arrayArgs; ++i) {
      phaseFuncArgs.push(cube(i,0))
    }
    for(var i=0; i<scalarArgs; ++i) {
      phaseFuncArgs.push(scalar(i))
    }
    
    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
    
    //Read in other cube data
    for(var j=1; j<(1<<dimension); ++j) {
      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
    }

    //Check for boundary crossing
    var vertexPredicate = []
    for(var j=1; j<(1<<dimension); ++j) {
      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
    }
    code.push("if(", vertexPredicate.join("||"), "){")

    //Read in boundary data
    var vertexArgs = []
    for(var i=0; i<dimension; ++i) {
      vertexArgs.push(index(i))
    }
    for(var i=0; i<arrayArgs; ++i) {
      vertexArgs.push(cube(i,0))
      for(var j=1; j<(1<<dimension); ++j) {
        if(typesig[i]) {
          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
        } else {
          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
        }
        vertexArgs.push(cube(i,j))
      }
    }
    for(var i=0; i<(1<<dimension); ++i) {
      vertexArgs.push(pcube(i))
    }
    for(var i=0; i<scalarArgs; ++i) {
      vertexArgs.push(scalar(i))
    }

    //Generate vertex
    code.push("vertex(", vertexArgs.join(), ");",
      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")

    //Check for face crossings
    var base = (1<<dimension)-1
    var corner = pcube(base)
    for(var j=0; j<dimension; ++j) {
      if((mask & ~(1<<j))===0) {
        //Check face
        var subset = base^(1<<j)
        var edge = pcube(subset)
        var faceArgs = [ ]
        for(var k=subset; k>0; k=(k-1)&subset) {
          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
        }
        faceArgs.push(vert(0))
        for(var k=0; k<arrayArgs; ++k) {
          if(j&1) {
            faceArgs.push(cube(k,base), cube(k,subset))
          } else {
            faceArgs.push(cube(k,subset), cube(k,base))
          }
        }
        if(j&1) {
          faceArgs.push(corner, edge)
        } else {
          faceArgs.push(edge, corner)
        }
        for(var k=0; k<scalarArgs; ++k) {
          faceArgs.push(scalar(k))
        }
        code.push("if(", corner, "!==", edge, "){",
          "face(", faceArgs.join(), ")}")
      }
    }
    
    //Increment pointer, close off if statement
    code.push("}",
      POINTER, "+=1;")
  }

  function flip() {
    for(var j=1; j<(1<<dimension); ++j) {
      code.push(TEMPORARY, "=", pdelta(j), ";",
                pdelta(j), "=", qcube(j), ";",
                qcube(j), "=", TEMPORARY, ";")
    }
  }

  function createLoop(i, mask) {
    if(i < 0) {
      processGridCell(mask)
      return
    }
    fillEmptySlice(i)
    code.push("if(", shape(order[i]), ">0){",
      index(order[i]), "=1;")
    createLoop(i-1, mask|(1<<order[i]))

    for(var j=0; j<arrayArgs; ++j) {
      code.push(pointer(j), "+=", step(j,order[i]), ";")
    }
    if(i === dimension-1) {
      code.push(POINTER, "=0;")
      flip()
    }
    forLoopBegin(i, 2)
    createLoop(i-1, mask)
    if(i === dimension-1) {
      code.push("if(", index(order[dimension-1]), "&1){",
        POINTER, "=0;}")
      flip()
    }
    forLoopEnd(i)
    code.push("}")
  }

  createLoop(dimension-1, 0)

  //Release scratch memory
  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")

  //Compile and link procedure
  var procedureCode = [
    "'use strict';",
    "function ", funcName, "(", args.join(), "){",
      "var ", vars.join(), ";",
      code.join(""),
    "}",
    "return ", funcName ].join("")

  var proc = new Function(
    "vertex", 
    "face", 
    "phase", 
    "mallocUint32", 
    "freeUint32",
    procedureCode)
  return proc(
    vertexFunc, 
    faceFunc, 
    phaseFunc, 
    pool.mallocUint32, 
    pool.freeUint32)
}

function createSurfaceExtractor(args) {
  function error(msg) {
    throw new Error("ndarray-extract-contour: " + msg)
  }
  if(typeof args !== "object") {
    error("Must specify arguments")
  }
  var order = args.order
  if(!Array.isArray(order)) {
    error("Must specify order")
  }
  var arrays = args.arrayArguments||1
  if(arrays < 1) {
    error("Must have at least one array argument")
  }
  var scalars = args.scalarArguments||0
  if(scalars < 0) {
    error("Scalar arg count must be > 0")
  }
  if(typeof args.vertex !== "function") {
    error("Must specify vertex creation function")
  }
  if(typeof args.cell !== "function") {
    error("Must specify cell creation function")
  }
  if(typeof args.phase !== "function") {
    error("Must specify phase function")
  }
  var getters = args.getters || []
  var typesig = new Array(arrays)
  for(var i=0; i<arrays; ++i) {
    if(getters.indexOf(i) >= 0) {
      typesig[i] = true
    } else {
      typesig[i] = false
    }
  }
  return compileSurfaceProcedure(
    args.vertex,
    args.cell,
    args.phase,
    scalars,
    order,
    typesig)
}
},{"typedarray-pool":205}],162:[function(require,module,exports){
"use strict"

var compile = require("cwise-compiler")

var EmptyProc = {
  body: "",
  args: [],
  thisVars: [],
  localVars: []
}

function fixup(x) {
  if(!x) {
    return EmptyProc
  }
  for(var i=0; i<x.args.length; ++i) {
    var a = x.args[i]
    if(i === 0) {
      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
    } else {
      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
    }
  }
  if(!x.thisVars) {
    x.thisVars = []
  }
  if(!x.localVars) {
    x.localVars = []
  }
  return x
}

function pcompile(user_args) {
  return compile({
    args:     user_args.args,
    pre:      fixup(user_args.pre),
    body:     fixup(user_args.body),
    post:     fixup(user_args.proc),
    funcName: user_args.funcName
  })
}

function makeOp(user_args) {
  var args = []
  for(var i=0; i<user_args.args.length; ++i) {
    args.push("a"+i)
  }
  var wrapper = new Function("P", [
    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
  ].join(""))
  return wrapper(pcompile(user_args))
}

var assign_ops = {
  add:  "+",
  sub:  "-",
  mul:  "*",
  div:  "/",
  mod:  "%",
  band: "&",
  bor:  "|",
  bxor: "^",
  lshift: "<<",
  rshift: ">>",
  rrshift: ">>>"
}
;(function(){
  for(var id in assign_ops) {
    var op = assign_ops[id]
    exports[id] = makeOp({
      args: ["array","array","array"],
      body: {args:["a","b","c"],
             body: "a=b"+op+"c"},
      funcName: id
    })
    exports[id+"eq"] = makeOp({
      args: ["array","array"],
      body: {args:["a","b"],
             body:"a"+op+"=b"},
      rvalue: true,
      funcName: id+"eq"
    })
    exports[id+"s"] = makeOp({
      args: ["array", "array", "scalar"],
      body: {args:["a","b","s"],
             body:"a=b"+op+"s"},
      funcName: id+"s"
    })
    exports[id+"seq"] = makeOp({
      args: ["array","scalar"],
      body: {args:["a","s"],
             body:"a"+op+"=s"},
      rvalue: true,
      funcName: id+"seq"
    })
  }
})();

var unary_ops = {
  not: "!",
  bnot: "~",
  neg: "-",
  recip: "1.0/"
}
;(function(){
  for(var id in unary_ops) {
    var op = unary_ops[id]
    exports[id] = makeOp({
      args: ["array", "array"],
      body: {args:["a","b"],
             body:"a="+op+"b"},
      funcName: id
    })
    exports[id+"eq"] = makeOp({
      args: ["array"],
      body: {args:["a"],
             body:"a="+op+"a"},
      rvalue: true,
      count: 2,
      funcName: id+"eq"
    })
  }
})();

var binary_ops = {
  and: "&&",
  or: "||",
  eq: "===",
  neq: "!==",
  lt: "<",
  gt: ">",
  leq: "<=",
  geq: ">="
}
;(function() {
  for(var id in binary_ops) {
    var op = binary_ops[id]
    exports[id] = makeOp({
      args: ["array","array","array"],
      body: {args:["a", "b", "c"],
             body:"a=b"+op+"c"},
      funcName: id
    })
    exports[id+"s"] = makeOp({
      args: ["array","array","scalar"],
      body: {args:["a", "b", "s"],
             body:"a=b"+op+"s"},
      funcName: id+"s"
    })
    exports[id+"eq"] = makeOp({
      args: ["array", "array"],
      body: {args:["a", "b"],
             body:"a=a"+op+"b"},
      rvalue:true,
      count:2,
      funcName: id+"eq"
    })
    exports[id+"seq"] = makeOp({
      args: ["array", "scalar"],
      body: {args:["a","s"],
             body:"a=a"+op+"s"},
      rvalue:true,
      count:2,
      funcName: id+"seq"
    })
  }
})();

var math_unary = [
  "abs",
  "acos",
  "asin",
  "atan",
  "ceil",
  "cos",
  "exp",
  "floor",
  "log",
  "round",
  "sin",
  "sqrt",
  "tan"
]
;(function() {
  for(var i=0; i<math_unary.length; ++i) {
    var f = math_unary[i]
    exports[f] = makeOp({
                    args: ["array", "array"],
                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
                    funcName: f
                  })
    exports[f+"eq"] = makeOp({
                      args: ["array"],
                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
                      rvalue: true,
                      count: 2,
                      funcName: f+"eq"
                    })
  }
})();

var math_comm = [
  "max",
  "min",
  "atan2",
  "pow"
]
;(function(){
  for(var i=0; i<math_comm.length; ++i) {
    var f= math_comm[i]
    exports[f] = makeOp({
                  args:["array", "array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
                  funcName: f
                })
    exports[f+"s"] = makeOp({
                  args:["array", "array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
                  funcName: f+"s"
                  })
    exports[f+"eq"] = makeOp({ args:["array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
                  rvalue: true,
                  count: 2,
                  funcName: f+"eq"
                  })
    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
                  rvalue:true,
                  count:2,
                  funcName: f+"seq"
                  })
  }
})();

var math_noncomm = [
  "atan2",
  "pow"
]
;(function(){
  for(var i=0; i<math_noncomm.length; ++i) {
    var f= math_noncomm[i]
    exports[f+"op"] = makeOp({
                  args:["array", "array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
                  funcName: f+"op"
                })
    exports[f+"ops"] = makeOp({
                  args:["array", "array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
                  funcName: f+"ops"
                  })
    exports[f+"opeq"] = makeOp({ args:["array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
                  rvalue: true,
                  count: 2,
                  funcName: f+"opeq"
                  })
    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
                  rvalue:true,
                  count:2,
                  funcName: f+"opseq"
                  })
  }
})();

exports.any = compile({
  args:["array"],
  pre: EmptyProc,
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
  post: {args:[], localVars:[], thisVars:[], body:"return false"},
  funcName: "any"
})

exports.all = compile({
  args:["array"],
  pre: EmptyProc,
  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
  post: {args:[], localVars:[], thisVars:[], body:"return true"},
  funcName: "all"
})

exports.sum = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "sum"
})

exports.prod = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "prod"
})

exports.norm2squared = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "norm2squared"
})
  
exports.norm2 = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
  funcName: "norm2"
})
  

exports.norminf = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "norminf"
})

exports.norm1 = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "norm1"
})

exports.sup = compile({
  args: [ "array" ],
  pre:
   { body: "this_h=-Infinity",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] },
  body:
   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
     thisVars: [ "this_h" ],
     localVars: [] },
  post:
   { body: "return this_h",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] }
 })

exports.inf = compile({
  args: [ "array" ],
  pre:
   { body: "this_h=Infinity",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] },
  body:
   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
     thisVars: [ "this_h" ],
     localVars: [] },
  post:
   { body: "return this_h",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] }
 })

exports.argmin = compile({
  args:["index","array","shape"],
  pre:{
    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
    args:[
      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
      ],
    thisVars:["this_i","this_v"],
    localVars:[]},
  body:{
    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
    args:[
      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
    thisVars:["this_i","this_v"],
    localVars:["_inline_1_k"]},
  post:{
    body:"{return this_i}",
    args:[],
    thisVars:["this_i"],
    localVars:[]}
})

exports.argmax = compile({
  args:["index","array","shape"],
  pre:{
    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
    args:[
      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
      ],
    thisVars:["this_i","this_v"],
    localVars:[]},
  body:{
    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
    args:[
      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
    thisVars:["this_i","this_v"],
    localVars:["_inline_1_k"]},
  post:{
    body:"{return this_i}",
    args:[],
    thisVars:["this_i"],
    localVars:[]}
})  

exports.random = makeOp({
  args: ["array"],
  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
  funcName: "random"
})

exports.assign = makeOp({
  args:["array", "array"],
  body: {args:["a", "b"], body:"a=b"},
  funcName: "assign" })

exports.assigns = makeOp({
  args:["array", "scalar"],
  body: {args:["a", "b"], body:"a=b"},
  funcName: "assigns" })


exports.equals = compile({
  args:["array", "array"],
  pre: EmptyProc,
  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
               {name:"y", lvalue:false, rvalue:true, count:1}], 
        body: "if(x!==y){return false}", 
        localVars: [], 
        thisVars: []},
  post: {args:[], localVars:[], thisVars:[], body:"return true"},
  funcName: "equals"
})



},{"cwise-compiler":58}],163:[function(require,module,exports){
var iota = require("iota-array")
var isBuffer = require("is-buffer")

var hasTypedArrays  = ((typeof Float64Array) !== "undefined")

function compare1st(a, b) {
  return a[0] - b[0]
}

function order() {
  var stride = this.stride
  var terms = new Array(stride.length)
  var i
  for(i=0; i<terms.length; ++i) {
    terms[i] = [Math.abs(stride[i]), i]
  }
  terms.sort(compare1st)
  var result = new Array(terms.length)
  for(i=0; i<result.length; ++i) {
    result[i] = terms[i][1]
  }
  return result
}

function compileConstructor(dtype, dimension) {
  var className = ["View", dimension, "d", dtype].join("")
  if(dimension < 0) {
    className = "View_Nil" + dtype
  }
  var useGetters = (dtype === "generic")

  if(dimension === -1) {
    //Special case for trivial arrays
    var code =
      "function "+className+"(a){this.data=a;};\
var proto="+className+".prototype;\
proto.dtype='"+dtype+"';\
proto.index=function(){return -1};\
proto.size=0;\
proto.dimension=-1;\
proto.shape=proto.stride=proto.order=[];\
proto.lo=proto.hi=proto.transpose=proto.step=\
function(){return new "+className+"(this.data);};\
proto.get=proto.set=function(){};\
proto.pick=function(){return null};\
return function construct_"+className+"(a){return new "+className+"(a);}"
    var procedure = new Function(code)
    return procedure()
  } else if(dimension === 0) {
    //Special case for 0d arrays
    var code =
      "function "+className+"(a,d) {\
this.data = a;\
this.offset = d\
};\
var proto="+className+".prototype;\
proto.dtype='"+dtype+"';\
proto.index=function(){return this.offset};\
proto.dimension=0;\
proto.size=1;\
proto.shape=\
proto.stride=\
proto.order=[];\
proto.lo=\
proto.hi=\
proto.transpose=\
proto.step=function "+className+"_copy() {\
return new "+className+"(this.data,this.offset)\
};\
proto.pick=function "+className+"_pick(){\
return TrivialArray(this.data);\
};\
proto.valueOf=proto.get=function "+className+"_get(){\
return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
"};\
proto.set=function "+className+"_set(v){\
return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
};\
return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
    var procedure = new Function("TrivialArray", code)
    return procedure(CACHED_CONSTRUCTORS[dtype][0])
  }

  var code = ["'use strict'"]

  //Create constructor for view
  var indices = iota(dimension)
  var args = indices.map(function(i) { return "i"+i })
  var index_str = "this.offset+" + indices.map(function(i) {
        return "this.stride[" + i + "]*i" + i
      }).join("+")
  var shapeArg = indices.map(function(i) {
      return "b"+i
    }).join(",")
  var strideArg = indices.map(function(i) {
      return "c"+i
    }).join(",")
  code.push(
    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
      "this.shape=[" + shapeArg + "]",
      "this.stride=[" + strideArg + "]",
      "this.offset=d|0}",
    "var proto="+className+".prototype",
    "proto.dtype='"+dtype+"'",
    "proto.dimension="+dimension)

  //view.size:
  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
"}})")

  //view.order:
  if(dimension === 1) {
    code.push("proto.order=[0]")
  } else {
    code.push("Object.defineProperty(proto,'order',{get:")
    if(dimension < 4) {
      code.push("function "+className+"_order(){")
      if(dimension === 2) {
        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
      } else if(dimension === 3) {
        code.push(
"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
if(s0>s1){\
if(s1>s2){\
return [2,1,0];\
}else if(s0>s2){\
return [1,2,0];\
}else{\
return [1,0,2];\
}\
}else if(s0>s2){\
return [2,0,1];\
}else if(s2>s1){\
return [0,1,2];\
}else{\
return [0,2,1];\
}}})")
      }
    } else {
      code.push("ORDER})")
    }
  }

  //view.set(i0, ..., v):
  code.push(
"proto.set=function "+className+"_set("+args.join(",")+",v){")
  if(useGetters) {
    code.push("return this.data.set("+index_str+",v)}")
  } else {
    code.push("return this.data["+index_str+"]=v}")
  }

  //view.get(i0, ...):
  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
  if(useGetters) {
    code.push("return this.data.get("+index_str+")}")
  } else {
    code.push("return this.data["+index_str+"]}")
  }

  //view.index:
  code.push(
    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")

  //view.hi():
  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
    indices.map(function(i) {
      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
    }).join(",")+","+
    indices.map(function(i) {
      return "this.stride["+i + "]"
    }).join(",")+",this.offset)}")

  //view.lo():
  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
  for(var i=0; i<dimension; ++i) {
    code.push(
"if(typeof i"+i+"==='number'&&i"+i+">=0){\
d=i"+i+"|0;\
b+=c"+i+"*d;\
a"+i+"-=d}")
  }
  code.push("return new "+className+"(this.data,"+
    indices.map(function(i) {
      return "a"+i
    }).join(",")+","+
    indices.map(function(i) {
      return "c"+i
    }).join(",")+",b)}")

  //view.step():
  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
    indices.map(function(i) {
      return "a"+i+"=this.shape["+i+"]"
    }).join(",")+","+
    indices.map(function(i) {
      return "b"+i+"=this.stride["+i+"]"
    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
  for(var i=0; i<dimension; ++i) {
    code.push(
"if(typeof i"+i+"==='number'){\
d=i"+i+"|0;\
if(d<0){\
c+=b"+i+"*(a"+i+"-1);\
a"+i+"=ceil(-a"+i+"/d)\
}else{\
a"+i+"=ceil(a"+i+"/d)\
}\
b"+i+"*=d\
}")
  }
  code.push("return new "+className+"(this.data,"+
    indices.map(function(i) {
      return "a" + i
    }).join(",")+","+
    indices.map(function(i) {
      return "b" + i
    }).join(",")+",c)}")

  //view.transpose():
  var tShape = new Array(dimension)
  var tStride = new Array(dimension)
  for(var i=0; i<dimension; ++i) {
    tShape[i] = "a[i"+i+"]"
    tStride[i] = "b[i"+i+"]"
  }
  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")

  //view.pick():
  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
  for(var i=0; i<dimension; ++i) {
    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
  }
  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")

  //Add return statement
  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
    indices.map(function(i) {
      return "shape["+i+"]"
    }).join(",")+","+
    indices.map(function(i) {
      return "stride["+i+"]"
    }).join(",")+",offset)}")

  //Compile procedure
  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
  return procedure(CACHED_CONSTRUCTORS[dtype], order)
}

function arrayDType(data) {
  if(isBuffer(data)) {
    return "buffer"
  }
  if(hasTypedArrays) {
    switch(Object.prototype.toString.call(data)) {
      case "[object Float64Array]":
        return "float64"
      case "[object Float32Array]":
        return "float32"
      case "[object Int8Array]":
        return "int8"
      case "[object Int16Array]":
        return "int16"
      case "[object Int32Array]":
        return "int32"
      case "[object Uint8Array]":
        return "uint8"
      case "[object Uint16Array]":
        return "uint16"
      case "[object Uint32Array]":
        return "uint32"
      case "[object Uint8ClampedArray]":
        return "uint8_clamped"
    }
  }
  if(Array.isArray(data)) {
    return "array"
  }
  return "generic"
}

var CACHED_CONSTRUCTORS = {
  "float32":[],
  "float64":[],
  "int8":[],
  "int16":[],
  "int32":[],
  "uint8":[],
  "uint16":[],
  "uint32":[],
  "array":[],
  "uint8_clamped":[],
  "buffer":[],
  "generic":[]
}

;(function() {
  for(var id in CACHED_CONSTRUCTORS) {
    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
  }
});

function wrappedNDArrayCtor(data, shape, stride, offset) {
  if(data === undefined) {
    var ctor = CACHED_CONSTRUCTORS.array[0]
    return ctor([])
  } else if(typeof data === "number") {
    data = [data]
  }
  if(shape === undefined) {
    shape = [ data.length ]
  }
  var d = shape.length
  if(stride === undefined) {
    stride = new Array(d)
    for(var i=d-1, sz=1; i>=0; --i) {
      stride[i] = sz
      sz *= shape[i]
    }
  }
  if(offset === undefined) {
    offset = 0
    for(var i=0; i<d; ++i) {
      if(stride[i] < 0) {
        offset -= (shape[i]-1)*stride[i]
      }
    }
  }
  var dtype = arrayDType(data)
  var ctor_list = CACHED_CONSTRUCTORS[dtype]
  while(ctor_list.length <= d+1) {
    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
  }
  var ctor = ctor_list[d+1]
  return ctor(data, shape, stride, offset)
}

module.exports = wrappedNDArrayCtor

},{"iota-array":153,"is-buffer":155}],164:[function(require,module,exports){
"use strict"

var doubleBits = require("double-bits")

var SMALLEST_DENORM = Math.pow(2, -1074)
var UINT_MAX = (-1)>>>0

module.exports = nextafter

function nextafter(x, y) {
  if(isNaN(x) || isNaN(y)) {
    return NaN
  }
  if(x === y) {
    return x
  }
  if(x === 0) {
    if(y < 0) {
      return -SMALLEST_DENORM
    } else {
      return SMALLEST_DENORM
    }
  }
  var hi = doubleBits.hi(x)
  var lo = doubleBits.lo(x)
  if((y > x) === (x > 0)) {
    if(lo === UINT_MAX) {
      hi += 1
      lo = 0
    } else {
      lo += 1
    }
  } else {
    if(lo === 0) {
      lo = UINT_MAX
      hi -= 1
    } else {
      lo -= 1
    }
  }
  return doubleBits.pack(lo, hi)
}
},{"double-bits":63}],165:[function(require,module,exports){
/**
 * @module optical-properties
 */
'use strict'

module.exports = measure

var canvas = document.createElement('canvas'),
	ctx = canvas.getContext('2d')

canvas.width = 200, canvas.height = 200

measure.canvas = canvas

//returns character [x, y, scale] optical params
function measure (char, options) {
	var data, w, h, params

	//figure out argument imageData
	if (typeof char === 'string') {
		data = getCharImageData(char, options)
		w = data.width, h = data.height
	}
	else if (char instanceof HTMLCanvasElement) {
		w = char.width, h = char.height
		char = char.getContext('2d')
		data = char.getImageData(0, 0, w, h)
	}
	else if (char instanceof ImageData) {
		w = char.width, h = char.height
		data = char
	}

	params = getOpticalParams(data)

	return params
}

//draw character in canvas and get it's imagedata
function getCharImageData (char, options) {
	if (!options) options = {}
	var family = options.family || 'sans-serif'
	var w = canvas.width, h = canvas.height

	var size = options.width || options.height || options.size
	if (size && size != w) {
		w = h = canvas.width = canvas.height = size
	}

	var fs = options.fontSize || w/2

	ctx.fillStyle = '#000'
	ctx.fillRect(0, 0, w, h)

	ctx.font = fs + 'px ' + family
	ctx.textBaseline = 'middle'
	ctx.textAlign = 'center'
	ctx.fillStyle = 'white'
	ctx.fillText(char, w/2, h/2)

	return ctx.getImageData(0, 0, w, h)
}


//walks over imagedata, returns params
function getOpticalParams (data) {
	var buf = data.data, w = data.width, h = data.height

	var x, y, r, i, j, sum, xSum, ySum, rowAvg = Array(h), rowAvgX = Array(h), cx, cy, bounds, avg, top = 0, bottom = 0, left = w, right = 0, maxR = 0, rowBounds = Array(h), r2

	for (y = 0; y < h; y++) {
		sum = 0, xSum = 0, j = y*4*w

		bounds = getBounds(buf.subarray(j, j + 4*w), 4)

		if (bounds[0] === bounds[1]) {
			continue
		}
		else {
			if (!top) top = y
			bottom = y
		}

		for (x = bounds[0]; x < bounds[1]; x++) {
			i = x*4
			r = buf[j + i]
			sum += r
			xSum += x*r
		}

		rowAvg[y] = sum === 0 ? 0 : sum/w
		rowAvgX[y] = sum === 0 ? 0 : xSum/sum

		if (bounds[0] < left) left = bounds[0]
		if (bounds[1] > right) right = bounds[1]

		rowBounds[y] = bounds
	}

	sum = 0, ySum = 0, xSum = 0
	for (y = 0; y < h; y++) {
		avg = rowAvg[y]
		if (!avg) continue;

		ySum += avg*y
		sum += avg
		xSum += rowAvgX[y]*avg
	}

	cy = ySum/sum
	cx = xSum/sum

	maxR = 0, r2 = 0
	for (y = 0; y < h; y++) {
		bounds = rowBounds[y]
		if (!bounds) continue

		r2 = Math.max(
			dist2(cx - bounds[0], cy - y),
			dist2(cx - bounds[1], cy - y)
		)
		if (r2 > maxR) {
			maxR = r2
		}
	}

	return {
		center: [cx, cy],
		bounds: [left, top, right, bottom+1],
		radius: Math.sqrt(maxR)
	}
}

//get [leftId, rightId] pair of bounding values for an array
function getBounds (arr, stride) {
	var left = 0, right = arr.length, i = 0

	if (!stride) stride = 4

	//find left non-zero value
	while (!arr[i] && i < right) {
		i+=stride
	}
	left = i

	//find right non-zero value
	i = arr.length
	while (!arr[i] && i > left) {
		i-=stride
	}
	right = i

	return [left/stride, right/stride]
}

function dist2 (x, y) {
	return x*x + y*y
}

},{}],166:[function(require,module,exports){
/*!
 * pad-left <https://github.com/jonschlinkert/pad-left>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT license.
 */

'use strict';

var repeat = require('repeat-string');

module.exports = function padLeft(str, num, ch) {
  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
  return repeat(ch, num) + str;
};
},{"repeat-string":180}],167:[function(require,module,exports){
module.exports = function parseUnit(str, out) {
    if (!out)
        out = [ 0, '' ]

    str = String(str)
    var num = parseFloat(str, 10)
    out[0] = num
    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
    return out
}
},{}],168:[function(require,module,exports){
"use strict"

module.exports = permutationSign

var BRUTE_FORCE_CUTOFF = 32

var pool = require("typedarray-pool")

function permutationSign(p) {
  var n = p.length
  if(n < BRUTE_FORCE_CUTOFF) {
    //Use quadratic algorithm for small n
    var sgn = 1
    for(var i=0; i<n; ++i) {
      for(var j=0; j<i; ++j) {
        if(p[i] < p[j]) {
          sgn = -sgn
        } else if(p[i] === p[j]) {
          return 0
        }
      }
    }
    return sgn
  } else {
    //Otherwise use linear time algorithm
    var visited = pool.mallocUint8(n)
    for(var i=0; i<n; ++i) {
      visited[i] = 0
    }
    var sgn = 1
    for(var i=0; i<n; ++i) {
      if(!visited[i]) {
        var count = 1
        visited[i] = 1
        for(var j=p[i]; j!==i; j=p[j]) {
          if(visited[j]) {
            pool.freeUint8(visited)
            return 0
          }
          count += 1
          visited[j] = 1
        }
        if(!(count & 1)) {
          sgn = -sgn
        }
      }
    }
    pool.freeUint8(visited)
    return sgn
  }
}
},{"typedarray-pool":205}],169:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")
var inverse = require("invert-permutation")

function rank(permutation) {
  var n = permutation.length
  switch(n) {
    case 0:
    case 1:
      return 0
    case 2:
      return permutation[1]
    default:
      break
  }
  var p = pool.mallocUint32(n)
  var pinv = pool.mallocUint32(n)
  var r = 0, s, t, i
  inverse(permutation, pinv)
  for(i=0; i<n; ++i) {
    p[i] = permutation[i]
  }
  for(i=n-1; i>0; --i) {
    t = pinv[i]
    s = p[i]
    p[i] = p[t]
    p[t] = s
    pinv[i] = pinv[s]
    pinv[s] = t
    r = (r + s) * i
  }
  pool.freeUint32(pinv)
  pool.freeUint32(p)
  return r
}

function unrank(n, r, p) {
  switch(n) {
    case 0:
      if(p) { return p }
      return []
    case 1:
      if(p) {
        p[0] = 0
        return p
      } else {
        return [0]
      }
    case 2:
      if(p) {
        if(r) {
          p[0] = 0
          p[1] = 1
        } else {
          p[0] = 1
          p[1] = 0
        }
        return p
      } else {
        return r ? [0,1] : [1,0]
      }
    default:
      break
  }
  p = p || new Array(n)
  var s, t, i, nf=1
  p[0] = 0
  for(i=1; i<n; ++i) {
    p[i] = i
    nf = (nf*i)|0
  }
  for(i=n-1; i>0; --i) {
    s = (r / nf)|0
    r = (r - s * nf)|0
    nf = (nf / i)|0
    t = p[i]|0
    p[i] = p[s]|0
    p[s] = t|0
  }
  return p
}

exports.rank = rank
exports.unrank = unrank

},{"invert-permutation":152,"typedarray-pool":205}],170:[function(require,module,exports){
"use strict"

module.exports = planarDual

var compareAngle = require("compare-angle")

function planarDual(cells, positions) {

  var numVertices = positions.length|0
  var numEdges = cells.length
  var adj = [new Array(numVertices), new Array(numVertices)]
  for(var i=0; i<numVertices; ++i) {
    adj[0][i] = []
    adj[1][i] = []
  }
  for(var i=0; i<numEdges; ++i) {
    var c = cells[i]
    adj[0][c[0]].push(c)
    adj[1][c[1]].push(c)
  }

  var cycles = []

  //Add isolated vertices as trivial case
  for(var i=0; i<numVertices; ++i) {
    if(adj[0][i].length + adj[1][i].length === 0) {
      cycles.push( [i] )
    }
  }

  //Remove a half edge
  function cut(c, i) {
    var a = adj[i][c[i]]
    a.splice(a.indexOf(c), 1)
  }

  //Find next vertex and cut edge
  function next(a, b, noCut) {
    var nextCell, nextVertex, nextDir
    for(var i=0; i<2; ++i) {
      if(adj[i][b].length > 0) {
        nextCell = adj[i][b][0]
        nextDir = i
        break
      }
    }
    nextVertex = nextCell[nextDir^1]

    for(var dir=0; dir<2; ++dir) {
      var nbhd = adj[dir][b]
      for(var k=0; k<nbhd.length; ++k) {
        var e = nbhd[k]
        var p = e[dir^1]
        var cmp = compareAngle(
            positions[a], 
            positions[b], 
            positions[nextVertex],
            positions[p])
        if(cmp > 0) {
          nextCell = e
          nextVertex = p
          nextDir = dir
        }
      }
    }
    if(noCut) {
      return nextVertex
    }
    if(nextCell) {
      cut(nextCell, nextDir)
    }
    return nextVertex
  }

  function extractCycle(v, dir) {
    var e0 = adj[dir][v][0]
    var cycle = [v]
    cut(e0, dir)
    var u = e0[dir^1]
    var d0 = dir
    while(true) {
      while(u !== v) {
        cycle.push(u)
        u = next(cycle[cycle.length-2], u, false)
      }
      if(adj[0][v].length + adj[1][v].length === 0) {
        break
      }
      var a = cycle[cycle.length-1]
      var b = v
      var c = cycle[1]
      var d = next(a, b, true)
      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
        break
      }
      cycle.push(v)
      u = next(a, b)
    }
    return cycle
  }

  function shouldGlue(pcycle, ncycle) {
    return (ncycle[1] === ncycle[ncycle.length-1])
  }

  for(var i=0; i<numVertices; ++i) {
    for(var j=0; j<2; ++j) {
      var pcycle = []
      while(adj[j][i].length > 0) {
        var ni = adj[0][i].length
        var ncycle = extractCycle(i,j)
        if(shouldGlue(pcycle, ncycle)) {
          //Glue together trivial cycles
          pcycle.push.apply(pcycle, ncycle)
        } else {
          if(pcycle.length > 0) {
            cycles.push(pcycle)
          }
          pcycle = ncycle
        }
      }
      if(pcycle.length > 0) {
        cycles.push(pcycle)
      }
    }
  }

  //Combine paths and loops together
  return cycles
}
},{"compare-angle":57}],171:[function(require,module,exports){
'use strict'

module.exports = trimLeaves

var e2a = require('edges-to-adjacency-list')

function trimLeaves(edges, positions) {
  var adj = e2a(edges, positions.length)
  var live = new Array(positions.length)
  var nbhd = new Array(positions.length)

  var dead = []
  for(var i=0; i<positions.length; ++i) {
    var count = adj[i].length
    nbhd[i] = count
    live[i] = true
    if(count <= 1) {
      dead.push(i)
    }
  }

  while(dead.length > 0) {
    var v = dead.pop()
    live[v] = false
    var n = adj[v]
    for(var i=0; i<n.length; ++i) {
      var u = n[i]
      if(--nbhd[u] === 0) {
        dead.push(u)
      }
    }
  }

  var newIndex = new Array(positions.length)
  var npositions = []
  for(var i=0; i<positions.length; ++i) {
    if(live[i]) {
      var v = npositions.length
      newIndex[i] = v
      npositions.push(positions[i])
    } else {
      newIndex[i] = -1
    }
  }

  var nedges = []
  for(var i=0; i<edges.length; ++i) {
    var e = edges[i]
    if(live[e[0]] && live[e[1]]) {
      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
    }
  }
  
  return [ nedges, npositions ]
}
},{"edges-to-adjacency-list":65}],172:[function(require,module,exports){
'use strict'

module.exports = planarGraphToPolyline

var e2a = require('edges-to-adjacency-list')
var planarDual = require('planar-dual')
var preprocessPolygon = require('point-in-big-polygon')
var twoProduct = require('two-product')
var robustSum = require('robust-sum')
var uniq = require('uniq')
var trimLeaves = require('./lib/trim-leaves')

function makeArray(length, fill) {
  var result = new Array(length)
  for(var i=0; i<length; ++i) {
    result[i] = fill
  }
  return result
}

function makeArrayOfArrays(length) {
  var result = new Array(length)
  for(var i=0; i<length; ++i) {
    result[i] = []
  }
  return result
}


function planarGraphToPolyline(edges, positions) {

  //Trim leaves
  var result = trimLeaves(edges, positions)
  edges = result[0]
  positions = result[1]

  var numVertices = positions.length
  var numEdges = edges.length

  //Calculate adjacency list, check manifold
  var adj = e2a(edges, positions.length)
  for(var i=0; i<numVertices; ++i) {
    if(adj[i].length % 2 === 1) {
      throw new Error('planar-graph-to-polyline: graph must be manifold')
    }
  }

  //Get faces
  var faces = planarDual(edges, positions)

  //Check orientation of a polygon using exact arithmetic
  function ccw(c) {
    var n = c.length
    var area = [0]
    for(var j=0; j<n; ++j) {
      var a = positions[c[j]]
      var b = positions[c[(j+1)%n]]
      var t00 = twoProduct(-a[0], a[1])
      var t01 = twoProduct(-a[0], b[1])
      var t10 = twoProduct( b[0], a[1])
      var t11 = twoProduct( b[0], b[1])
      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
    }
    return area[area.length-1] > 0
  }

  //Extract all clockwise faces
  faces = faces.filter(ccw)

  //Detect which loops are contained in one another to handle parent-of relation
  var numFaces = faces.length
  var parent = new Array(numFaces)
  var containment = new Array(numFaces)
  for(var i=0; i<numFaces; ++i) {
    parent[i] = i
    var row = new Array(numFaces)
    var loopVertices = faces[i].map(function(v) {
      return positions[v]
    })
    var pmc = preprocessPolygon([loopVertices])
    var count = 0
    outer:
    for(var j=0; j<numFaces; ++j) {
      row[j] = 0
      if(i === j) {
        continue
      }
      var c = faces[j]
      var n = c.length
      for(var k=0; k<n; ++k) {
        var d = pmc(positions[c[k]])
        if(d !== 0) {
          if(d < 0) {
            row[j] = 1
            count += 1
          }
          continue outer
        }
      }
      row[j] = 1
      count += 1
    }
    containment[i] = [count, i, row]
  }
  containment.sort(function(a,b) {
    return b[0] - a[0]
  })
  for(var i=0; i<numFaces; ++i) {
    var row = containment[i]
    var idx = row[1]
    var children = row[2]
    for(var j=0; j<numFaces; ++j) {
      if(children[j]) {
        parent[j] = idx
      }
    }
  }

  //Initialize face adjacency list
  var fadj = makeArrayOfArrays(numFaces)
  for(var i=0; i<numFaces; ++i) {
    fadj[i].push(parent[i])
    fadj[parent[i]].push(i)
  }

  //Build adjacency matrix for edges
  var edgeAdjacency = {}
  var internalVertices = makeArray(numVertices, false)
  for(var i=0; i<numFaces; ++i) {
    var c = faces[i]
    var n = c.length
    for(var j=0; j<n; ++j) {
      var a = c[j]
      var b = c[(j+1)%n]
      var key = Math.min(a,b) + ":" + Math.max(a,b)
      if(key in edgeAdjacency) {
        var neighbor = edgeAdjacency[key]
        fadj[neighbor].push(i)
        fadj[i].push(neighbor)
        internalVertices[a] = internalVertices[b] = true
      } else {
        edgeAdjacency[key] = i
      }
    }
  }

  function sharedBoundary(c) {
    var n = c.length
    for(var i=0; i<n; ++i) {
      if(!internalVertices[c[i]]) {
        return false
      }
    }
    return true
  }

  var toVisit = []
  var parity = makeArray(numFaces, -1)
  for(var i=0; i<numFaces; ++i) {
    if(parent[i] === i && !sharedBoundary(faces[i])) {
      toVisit.push(i)
      parity[i] = 0
    } else {
      parity[i] = -1
    }
  }

  //Using face adjacency, classify faces as in/out
  var result = []
  while(toVisit.length > 0) {
    var top = toVisit.pop()
    var nbhd = fadj[top]
    uniq(nbhd, function(a,b) {
      return a-b
    })
    var nnbhr = nbhd.length
    var p = parity[top]
    var polyline
    if(p === 0) {
      var c = faces[top]
      polyline = [c]
    }
    for(var i=0; i<nnbhr; ++i) {
      var f = nbhd[i]
      if(parity[f] >= 0) {
        continue
      }
      parity[f] = p^1
      toVisit.push(f)
      if(p === 0) {
        var c = faces[f]
        if(!sharedBoundary(c)) {
          c.reverse()
          polyline.push(c)
        }
      }
    }
    if(p === 0) {
      result.push(polyline)
    }
  }

  return result
}
},{"./lib/trim-leaves":171,"edges-to-adjacency-list":65,"planar-dual":170,"point-in-big-polygon":173,"robust-sum":187,"two-product":203,"uniq":207}],173:[function(require,module,exports){
module.exports = preprocessPolygon

var orient = require('robust-orientation')[3]
var makeSlabs = require('slab-decomposition')
var makeIntervalTree = require('interval-tree-1d')
var bsearch = require('binary-search-bounds')

function visitInterval() {
  return true
}

function intervalSearch(table) {
  return function(x, y) {
    var tree = table[x]
    if(tree) {
      return !!tree.queryPoint(y, visitInterval)
    }
    return false
  }
}

function buildVerticalIndex(segments) {
  var table = {}
  for(var i=0; i<segments.length; ++i) {
    var s = segments[i]
    var x = s[0][0]
    var y0 = s[0][1]
    var y1 = s[1][1]
    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
    if(x in table) {
      table[x].push(p)
    } else {
      table[x] = [ p ]
    }
  }
  var intervalTable = {}
  var keys = Object.keys(table)
  for(var i=0; i<keys.length; ++i) {
    var segs = table[keys[i]]
    intervalTable[keys[i]] = makeIntervalTree(segs)
  }
  return intervalSearch(intervalTable)
}

function buildSlabSearch(slabs, coordinates) {
  return function(p) {
    var bucket = bsearch.le(coordinates, p[0])
    if(bucket < 0) {
      return 1
    }
    var root = slabs[bucket]
    if(!root) {
      if(bucket > 0 && coordinates[bucket] === p[0]) {
        root = slabs[bucket-1]
      } else {
        return 1
      }
    }
    var lastOrientation = 1
    while(root) {
      var s = root.key
      var o = orient(p, s[0], s[1])
      if(s[0][0] < s[1][0]) {
        if(o < 0) {
          root = root.left
        } else if(o > 0) {
          lastOrientation = -1
          root = root.right
        } else {
          return 0
        }
      } else {
        if(o > 0) {
          root = root.left
        } else if(o < 0) {
          lastOrientation = 1
          root = root.right
        } else {
          return 0
        }
      }
    }
    return lastOrientation
  }
}

function classifyEmpty(p) {
  return 1
}

function createClassifyVertical(testVertical) {
  return function classify(p) {
    if(testVertical(p[0], p[1])) {
      return 0
    }
    return 1
  }
}

function createClassifyPointDegen(testVertical, testNormal) {
  return function classify(p) {
    if(testVertical(p[0], p[1])) {
      return 0
    }
    return testNormal(p)
  }
}

function preprocessPolygon(loops) {
  //Compute number of loops
  var numLoops = loops.length

  //Unpack segments
  var segments = []
  var vsegments = []
  var ptr = 0
  for(var i=0; i<numLoops; ++i) {
    var loop = loops[i]
    var numVertices = loop.length
    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
      var a = loop[s]
      var b = loop[t]
      if(a[0] === b[0]) {
        vsegments.push([a,b])
      } else {
        segments.push([a,b])
      }
    }
  }

  //Degenerate case: All loops are empty
  if(segments.length === 0) {
    if(vsegments.length === 0) {
      return classifyEmpty
    } else {
      return createClassifyVertical(buildVerticalIndex(vsegments))
    }
  }

  //Build slab decomposition
  var slabs = makeSlabs(segments)
  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)

  if(vsegments.length === 0) {
    return testSlab
  } else {
    return createClassifyPointDegen(
      buildVerticalIndex(vsegments),
      testSlab)
  }
}
},{"binary-search-bounds":30,"interval-tree-1d":151,"robust-orientation":182,"slab-decomposition":194}],174:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],175:[function(require,module,exports){
'use strict'

var bnadd = require('big-rat/add')

module.exports = add

function add (a, b) {
  var n = a.length
  var r = new Array(n)
  for (var i=0; i<n; ++i) {
    r[i] = bnadd(a[i], b[i])
  }
  return r
}

},{"big-rat/add":14}],176:[function(require,module,exports){
'use strict'

module.exports = float2rat

var rat = require('big-rat')

function float2rat(v) {
  var result = new Array(v.length)
  for(var i=0; i<v.length; ++i) {
    result[i] = rat(v[i])
  }
  return result
}

},{"big-rat":17}],177:[function(require,module,exports){
'use strict'

var rat = require('big-rat')
var mul = require('big-rat/mul')

module.exports = muls

function muls(a, x) {
  var s = rat(x)
  var n = a.length
  var r = new Array(n)
  for(var i=0; i<n; ++i) {
    r[i] = mul(a[i], s)
  }
  return r
}

},{"big-rat":17,"big-rat/mul":26}],178:[function(require,module,exports){
'use strict'

var bnsub = require('big-rat/sub')

module.exports = sub

function sub(a, b) {
  var n = a.length
  var r = new Array(n)
    for(var i=0; i<n; ++i) {
    r[i] = bnsub(a[i], b[i])
  }
  return r
}

},{"big-rat/sub":28}],179:[function(require,module,exports){
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global.createREGL = factory());
}(this, (function () { 'use strict';

var arrayTypes =  {
	"[object Int8Array]": 5120,
	"[object Int16Array]": 5122,
	"[object Int32Array]": 5124,
	"[object Uint8Array]": 5121,
	"[object Uint8ClampedArray]": 5121,
	"[object Uint16Array]": 5123,
	"[object Uint32Array]": 5125,
	"[object Float32Array]": 5126,
	"[object Float64Array]": 5121,
	"[object ArrayBuffer]": 5121
};

var isTypedArray = function (x) {
  return Object.prototype.toString.call(x) in arrayTypes
};

var extend = function (base, opts) {
  var keys = Object.keys(opts);
  for (var i = 0; i < keys.length; ++i) {
    base[keys[i]] = opts[keys[i]];
  }
  return base
};

// Error checking and parameter validation.
//
// Statements for the form `check.someProcedure(...)` get removed by
// a browserify transform for optimized/minified bundles.
//
/* globals btoa */
// only used for extracting shader names.  if btoa not present, then errors
// will be slightly crappier
function decodeB64 (str) {
  if (typeof btoa !== 'undefined') {
    return btoa(str)
  }
  return 'base64:' + str
}

function raise (message) {
  var error = new Error('(regl) ' + message);
  console.error(error);
  throw error
}

function check (pred, message) {
  if (!pred) {
    raise(message);
  }
}

function encolon (message) {
  if (message) {
    return ': ' + message
  }
  return ''
}

function checkParameter (param, possibilities, message) {
  if (!(param in possibilities)) {
    raise('unknown parameter (' + param + ')' + encolon(message) +
          '. possible values: ' + Object.keys(possibilities).join());
  }
}

function checkIsTypedArray (data, message) {
  if (!isTypedArray(data)) {
    raise(
      'invalid parameter type' + encolon(message) +
      '. must be a typed array');
  }
}

function checkTypeOf (value, type, message) {
  if (typeof value !== type) {
    raise(
      'invalid parameter type' + encolon(message) +
      '. expected ' + type + ', got ' + (typeof value));
  }
}

function checkNonNegativeInt (value, message) {
  if (!((value >= 0) &&
        ((value | 0) === value))) {
    raise('invalid parameter type, (' + value + ')' + encolon(message) +
          '. must be a nonnegative integer');
  }
}

function checkOneOf (value, list, message) {
  if (list.indexOf(value) < 0) {
    raise('invalid value' + encolon(message) + '. must be one of: ' + list);
  }
}

var constructorKeys = [
  'gl',
  'canvas',
  'container',
  'attributes',
  'pixelRatio',
  'extensions',
  'optionalExtensions',
  'profile',
  'onDone'
];

function checkConstructor (obj) {
  Object.keys(obj).forEach(function (key) {
    if (constructorKeys.indexOf(key) < 0) {
      raise('invalid regl constructor argument "' + key + '". must be one of ' + constructorKeys);
    }
  });
}

function leftPad (str, n) {
  str = str + '';
  while (str.length < n) {
    str = ' ' + str;
  }
  return str
}

function ShaderFile () {
  this.name = 'unknown';
  this.lines = [];
  this.index = {};
  this.hasErrors = false;
}

function ShaderLine (number, line) {
  this.number = number;
  this.line = line;
  this.errors = [];
}

function ShaderError (fileNumber, lineNumber, message) {
  this.file = fileNumber;
  this.line = lineNumber;
  this.message = message;
}

function guessCommand () {
  var error = new Error();
  var stack = (error.stack || error).toString();
  var pat = /compileProcedure.*\n\s*at.*\((.*)\)/.exec(stack);
  if (pat) {
    return pat[1]
  }
  var pat2 = /compileProcedure.*\n\s*at\s+(.*)(\n|$)/.exec(stack);
  if (pat2) {
    return pat2[1]
  }
  return 'unknown'
}

function guessCallSite () {
  var error = new Error();
  var stack = (error.stack || error).toString();
  var pat = /at REGLCommand.*\n\s+at.*\((.*)\)/.exec(stack);
  if (pat) {
    return pat[1]
  }
  var pat2 = /at REGLCommand.*\n\s+at\s+(.*)\n/.exec(stack);
  if (pat2) {
    return pat2[1]
  }
  return 'unknown'
}

function parseSource (source, command) {
  var lines = source.split('\n');
  var lineNumber = 1;
  var fileNumber = 0;
  var files = {
    unknown: new ShaderFile(),
    0: new ShaderFile()
  };
  files.unknown.name = files[0].name = command || guessCommand();
  files.unknown.lines.push(new ShaderLine(0, ''));
  for (var i = 0; i < lines.length; ++i) {
    var line = lines[i];
    var parts = /^\s*\#\s*(\w+)\s+(.+)\s*$/.exec(line);
    if (parts) {
      switch (parts[1]) {
        case 'line':
          var lineNumberInfo = /(\d+)(\s+\d+)?/.exec(parts[2]);
          if (lineNumberInfo) {
            lineNumber = lineNumberInfo[1] | 0;
            if (lineNumberInfo[2]) {
              fileNumber = lineNumberInfo[2] | 0;
              if (!(fileNumber in files)) {
                files[fileNumber] = new ShaderFile();
              }
            }
          }
          break
        case 'define':
          var nameInfo = /SHADER_NAME(_B64)?\s+(.*)$/.exec(parts[2]);
          if (nameInfo) {
            files[fileNumber].name = (nameInfo[1]
                ? decodeB64(nameInfo[2])
                : nameInfo[2]);
          }
          break
      }
    }
    files[fileNumber].lines.push(new ShaderLine(lineNumber++, line));
  }
  Object.keys(files).forEach(function (fileNumber) {
    var file = files[fileNumber];
    file.lines.forEach(function (line) {
      file.index[line.number] = line;
    });
  });
  return files
}

function parseErrorLog (errLog) {
  var result = [];
  errLog.split('\n').forEach(function (errMsg) {
    if (errMsg.length < 5) {
      return
    }
    var parts = /^ERROR\:\s+(\d+)\:(\d+)\:\s*(.*)$/.exec(errMsg);
    if (parts) {
      result.push(new ShaderError(
        parts[1] | 0,
        parts[2] | 0,
        parts[3].trim()));
    } else if (errMsg.length > 0) {
      result.push(new ShaderError('unknown', 0, errMsg));
    }
  });
  return result
}

function annotateFiles (files, errors) {
  errors.forEach(function (error) {
    var file = files[error.file];
    if (file) {
      var line = file.index[error.line];
      if (line) {
        line.errors.push(error);
        file.hasErrors = true;
        return
      }
    }
    files.unknown.hasErrors = true;
    files.unknown.lines[0].errors.push(error);
  });
}

function checkShaderError (gl, shader, source, type, command) {
  if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
    var errLog = gl.getShaderInfoLog(shader);
    var typeName = type === gl.FRAGMENT_SHADER ? 'fragment' : 'vertex';
    checkCommandType(source, 'string', typeName + ' shader source must be a string', command);
    var files = parseSource(source, command);
    var errors = parseErrorLog(errLog);
    annotateFiles(files, errors);

    Object.keys(files).forEach(function (fileNumber) {
      var file = files[fileNumber];
      if (!file.hasErrors) {
        return
      }

      var strings = [''];
      var styles = [''];

      function push (str, style) {
        strings.push(str);
        styles.push(style || '');
      }

      push('file number ' + fileNumber + ': ' + file.name + '\n', 'color:red;text-decoration:underline;font-weight:bold');

      file.lines.forEach(function (line) {
        if (line.errors.length > 0) {
          push(leftPad(line.number, 4) + '|  ', 'background-color:yellow; font-weight:bold');
          push(line.line + '\n', 'color:red; background-color:yellow; font-weight:bold');

          // try to guess token
          var offset = 0;
          line.errors.forEach(function (error) {
            var message = error.message;
            var token = /^\s*\'(.*)\'\s*\:\s*(.*)$/.exec(message);
            if (token) {
              var tokenPat = token[1];
              message = token[2];
              switch (tokenPat) {
                case 'assign':
                  tokenPat = '=';
                  break
              }
              offset = Math.max(line.line.indexOf(tokenPat, offset), 0);
            } else {
              offset = 0;
            }

            push(leftPad('| ', 6));
            push(leftPad('^^^', offset + 3) + '\n', 'font-weight:bold');
            push(leftPad('| ', 6));
            push(message + '\n', 'font-weight:bold');
          });
          push(leftPad('| ', 6) + '\n');
        } else {
          push(leftPad(line.number, 4) + '|  ');
          push(line.line + '\n', 'color:red');
        }
      });
      if (typeof document !== 'undefined') {
        styles[0] = strings.join('%c');
        console.log.apply(console, styles);
      } else {
        console.log(strings.join(''));
      }
    });

    check.raise('Error compiling ' + typeName + ' shader, ' + files[0].name);
  }
}

function checkLinkError (gl, program, fragShader, vertShader, command) {
  if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
    var errLog = gl.getProgramInfoLog(program);
    var fragParse = parseSource(fragShader, command);
    var vertParse = parseSource(vertShader, command);

    var header = 'Error linking program with vertex shader, "' +
      vertParse[0].name + '", and fragment shader "' + fragParse[0].name + '"';

    if (typeof document !== 'undefined') {
      console.log('%c' + header + '\n%c' + errLog,
        'color:red;text-decoration:underline;font-weight:bold',
        'color:red');
    } else {
      console.log(header + '\n' + errLog);
    }
    check.raise(header);
  }
}

function saveCommandRef (object) {
  object._commandRef = guessCommand();
}

function saveDrawCommandInfo (opts, uniforms, attributes, stringStore) {
  saveCommandRef(opts);

  function id (str) {
    if (str) {
      return stringStore.id(str)
    }
    return 0
  }
  opts._fragId = id(opts.static.frag);
  opts._vertId = id(opts.static.vert);

  function addProps (dict, set) {
    Object.keys(set).forEach(function (u) {
      dict[stringStore.id(u)] = true;
    });
  }

  var uniformSet = opts._uniformSet = {};
  addProps(uniformSet, uniforms.static);
  addProps(uniformSet, uniforms.dynamic);

  var attributeSet = opts._attributeSet = {};
  addProps(attributeSet, attributes.static);
  addProps(attributeSet, attributes.dynamic);

  opts._hasCount = (
    'count' in opts.static ||
    'count' in opts.dynamic ||
    'elements' in opts.static ||
    'elements' in opts.dynamic);
}

function commandRaise (message, command) {
  var callSite = guessCallSite();
  raise(message +
    ' in command ' + (command || guessCommand()) +
    (callSite === 'unknown' ? '' : ' called from ' + callSite));
}

function checkCommand (pred, message, command) {
  if (!pred) {
    commandRaise(message, command || guessCommand());
  }
}

function checkParameterCommand (param, possibilities, message, command) {
  if (!(param in possibilities)) {
    commandRaise(
      'unknown parameter (' + param + ')' + encolon(message) +
      '. possible values: ' + Object.keys(possibilities).join(),
      command || guessCommand());
  }
}

function checkCommandType (value, type, message, command) {
  if (typeof value !== type) {
    commandRaise(
      'invalid parameter type' + encolon(message) +
      '. expected ' + type + ', got ' + (typeof value),
      command || guessCommand());
  }
}

function checkOptional (block) {
  block();
}

function checkFramebufferFormat (attachment, texFormats, rbFormats) {
  if (attachment.texture) {
    checkOneOf(
      attachment.texture._texture.internalformat,
      texFormats,
      'unsupported texture format for attachment');
  } else {
    checkOneOf(
      attachment.renderbuffer._renderbuffer.format,
      rbFormats,
      'unsupported renderbuffer format for attachment');
  }
}

var GL_CLAMP_TO_EDGE = 0x812F;

var GL_NEAREST = 0x2600;
var GL_NEAREST_MIPMAP_NEAREST = 0x2700;
var GL_LINEAR_MIPMAP_NEAREST = 0x2701;
var GL_NEAREST_MIPMAP_LINEAR = 0x2702;
var GL_LINEAR_MIPMAP_LINEAR = 0x2703;

var GL_BYTE = 5120;
var GL_UNSIGNED_BYTE = 5121;
var GL_SHORT = 5122;
var GL_UNSIGNED_SHORT = 5123;
var GL_INT = 5124;
var GL_UNSIGNED_INT = 5125;
var GL_FLOAT = 5126;

var GL_UNSIGNED_SHORT_4_4_4_4 = 0x8033;
var GL_UNSIGNED_SHORT_5_5_5_1 = 0x8034;
var GL_UNSIGNED_SHORT_5_6_5 = 0x8363;
var GL_UNSIGNED_INT_24_8_WEBGL = 0x84FA;

var GL_HALF_FLOAT_OES = 0x8D61;

var TYPE_SIZE = {};

TYPE_SIZE[GL_BYTE] =
TYPE_SIZE[GL_UNSIGNED_BYTE] = 1;

TYPE_SIZE[GL_SHORT] =
TYPE_SIZE[GL_UNSIGNED_SHORT] =
TYPE_SIZE[GL_HALF_FLOAT_OES] =
TYPE_SIZE[GL_UNSIGNED_SHORT_5_6_5] =
TYPE_SIZE[GL_UNSIGNED_SHORT_4_4_4_4] =
TYPE_SIZE[GL_UNSIGNED_SHORT_5_5_5_1] = 2;

TYPE_SIZE[GL_INT] =
TYPE_SIZE[GL_UNSIGNED_INT] =
TYPE_SIZE[GL_FLOAT] =
TYPE_SIZE[GL_UNSIGNED_INT_24_8_WEBGL] = 4;

function pixelSize (type, channels) {
  if (type === GL_UNSIGNED_SHORT_5_5_5_1 ||
      type === GL_UNSIGNED_SHORT_4_4_4_4 ||
      type === GL_UNSIGNED_SHORT_5_6_5) {
    return 2
  } else if (type === GL_UNSIGNED_INT_24_8_WEBGL) {
    return 4
  } else {
    return TYPE_SIZE[type] * channels
  }
}

function isPow2 (v) {
  return !(v & (v - 1)) && (!!v)
}

function checkTexture2D (info, mipData, limits) {
  var i;
  var w = mipData.width;
  var h = mipData.height;
  var c = mipData.channels;

  // Check texture shape
  check(w > 0 && w <= limits.maxTextureSize &&
        h > 0 && h <= limits.maxTextureSize,
        'invalid texture shape');

  // check wrap mode
  if (info.wrapS !== GL_CLAMP_TO_EDGE || info.wrapT !== GL_CLAMP_TO_EDGE) {
    check(isPow2(w) && isPow2(h),
      'incompatible wrap mode for texture, both width and height must be power of 2');
  }

  if (mipData.mipmask === 1) {
    if (w !== 1 && h !== 1) {
      check(
        info.minFilter !== GL_NEAREST_MIPMAP_NEAREST &&
        info.minFilter !== GL_NEAREST_MIPMAP_LINEAR &&
        info.minFilter !== GL_LINEAR_MIPMAP_NEAREST &&
        info.minFilter !== GL_LINEAR_MIPMAP_LINEAR,
        'min filter requires mipmap');
    }
  } else {
    // texture must be power of 2
    check(isPow2(w) && isPow2(h),
      'texture must be a square power of 2 to support mipmapping');
    check(mipData.mipmask === (w << 1) - 1,
      'missing or incomplete mipmap data');
  }

  if (mipData.type === GL_FLOAT) {
    if (limits.extensions.indexOf('oes_texture_float_linear') < 0) {
      check(info.minFilter === GL_NEAREST && info.magFilter === GL_NEAREST,
        'filter not supported, must enable oes_texture_float_linear');
    }
    check(!info.genMipmaps,
      'mipmap generation not supported with float textures');
  }

  // check image complete
  var mipimages = mipData.images;
  for (i = 0; i < 16; ++i) {
    if (mipimages[i]) {
      var mw = w >> i;
      var mh = h >> i;
      check(mipData.mipmask & (1 << i), 'missing mipmap data');

      var img = mipimages[i];

      check(
        img.width === mw &&
        img.height === mh,
        'invalid shape for mip images');

      check(
        img.format === mipData.format &&
        img.internalformat === mipData.internalformat &&
        img.type === mipData.type,
        'incompatible type for mip image');

      if (img.compressed) {
        // TODO: check size for compressed images
      } else if (img.data) {
        // check(img.data.byteLength === mw * mh *
        // Math.max(pixelSize(img.type, c), img.unpackAlignment),
        var rowSize = Math.ceil(pixelSize(img.type, c) * mw / img.unpackAlignment) * img.unpackAlignment;
        check(img.data.byteLength === rowSize * mh,
          'invalid data for image, buffer size is inconsistent with image format');
      } else if (img.element) {
        // TODO: check element can be loaded
      } else if (img.copy) {
        // TODO: check compatible format and type
      }
    } else if (!info.genMipmaps) {
      check((mipData.mipmask & (1 << i)) === 0, 'extra mipmap data');
    }
  }

  if (mipData.compressed) {
    check(!info.genMipmaps,
      'mipmap generation for compressed images not supported');
  }
}

function checkTextureCube (texture, info, faces, limits) {
  var w = texture.width;
  var h = texture.height;
  var c = texture.channels;

  // Check texture shape
  check(
    w > 0 && w <= limits.maxTextureSize && h > 0 && h <= limits.maxTextureSize,
    'invalid texture shape');
  check(
    w === h,
    'cube map must be square');
  check(
    info.wrapS === GL_CLAMP_TO_EDGE && info.wrapT === GL_CLAMP_TO_EDGE,
    'wrap mode not supported by cube map');

  for (var i = 0; i < faces.length; ++i) {
    var face = faces[i];
    check(
      face.width === w && face.height === h,
      'inconsistent cube map face shape');

    if (info.genMipmaps) {
      check(!face.compressed,
        'can not generate mipmap for compressed textures');
      check(face.mipmask === 1,
        'can not specify mipmaps and generate mipmaps');
    } else {
      // TODO: check mip and filter mode
    }

    var mipmaps = face.images;
    for (var j = 0; j < 16; ++j) {
      var img = mipmaps[j];
      if (img) {
        var mw = w >> j;
        var mh = h >> j;
        check(face.mipmask & (1 << j), 'missing mipmap data');
        check(
          img.width === mw &&
          img.height === mh,
          'invalid shape for mip images');
        check(
          img.format === texture.format &&
          img.internalformat === texture.internalformat &&
          img.type === texture.type,
          'incompatible type for mip image');

        if (img.compressed) {
          // TODO: check size for compressed images
        } else if (img.data) {
          check(img.data.byteLength === mw * mh *
            Math.max(pixelSize(img.type, c), img.unpackAlignment),
            'invalid data for image, buffer size is inconsistent with image format');
        } else if (img.element) {
          // TODO: check element can be loaded
        } else if (img.copy) {
          // TODO: check compatible format and type
        }
      }
    }
  }
}

var check$1 = extend(check, {
  optional: checkOptional,
  raise: raise,
  commandRaise: commandRaise,
  command: checkCommand,
  parameter: checkParameter,
  commandParameter: checkParameterCommand,
  constructor: checkConstructor,
  type: checkTypeOf,
  commandType: checkCommandType,
  isTypedArray: checkIsTypedArray,
  nni: checkNonNegativeInt,
  oneOf: checkOneOf,
  shaderError: checkShaderError,
  linkError: checkLinkError,
  callSite: guessCallSite,
  saveCommandRef: saveCommandRef,
  saveDrawInfo: saveDrawCommandInfo,
  framebufferFormat: checkFramebufferFormat,
  guessCommand: guessCommand,
  texture2D: checkTexture2D,
  textureCube: checkTextureCube
});

var VARIABLE_COUNTER = 0;

var DYN_FUNC = 0;

function DynamicVariable (type, data) {
  this.id = (VARIABLE_COUNTER++);
  this.type = type;
  this.data = data;
}

function escapeStr (str) {
  return str.replace(/\\/g, '\\\\').replace(/"/g, '\\"')
}

function splitParts (str) {
  if (str.length === 0) {
    return []
  }

  var firstChar = str.charAt(0);
  var lastChar = str.charAt(str.length - 1);

  if (str.length > 1 &&
      firstChar === lastChar &&
      (firstChar === '"' || firstChar === "'")) {
    return ['"' + escapeStr(str.substr(1, str.length - 2)) + '"']
  }

  var parts = /\[(false|true|null|\d+|'[^']*'|"[^"]*")\]/.exec(str);
  if (parts) {
    return (
      splitParts(str.substr(0, parts.index))
      .concat(splitParts(parts[1]))
      .concat(splitParts(str.substr(parts.index + parts[0].length)))
    )
  }

  var subparts = str.split('.');
  if (subparts.length === 1) {
    return ['"' + escapeStr(str) + '"']
  }

  var result = [];
  for (var i = 0; i < subparts.length; ++i) {
    result = result.concat(splitParts(subparts[i]));
  }
  return result
}

function toAccessorString (str) {
  return '[' + splitParts(str).join('][') + ']'
}

function defineDynamic (type, data) {
  return new DynamicVariable(type, toAccessorString(data + ''))
}

function isDynamic (x) {
  return (typeof x === 'function' && !x._reglType) ||
         x instanceof DynamicVariable
}

function unbox (x, path) {
  if (typeof x === 'function') {
    return new DynamicVariable(DYN_FUNC, x)
  }
  return x
}

var dynamic = {
  DynamicVariable: DynamicVariable,
  define: defineDynamic,
  isDynamic: isDynamic,
  unbox: unbox,
  accessor: toAccessorString
};

/* globals requestAnimationFrame, cancelAnimationFrame */
var raf = {
  next: typeof requestAnimationFrame === 'function'
    ? function (cb) { return requestAnimationFrame(cb) }
    : function (cb) { return setTimeout(cb, 16) },
  cancel: typeof cancelAnimationFrame === 'function'
    ? function (raf) { return cancelAnimationFrame(raf) }
    : clearTimeout
};

/* globals performance */
var clock = (typeof performance !== 'undefined' && performance.now)
  ? function () { return performance.now() }
  : function () { return +(new Date()) };

function createStringStore () {
  var stringIds = {'': 0};
  var stringValues = [''];
  return {
    id: function (str) {
      var result = stringIds[str];
      if (result) {
        return result
      }
      result = stringIds[str] = stringValues.length;
      stringValues.push(str);
      return result
    },

    str: function (id) {
      return stringValues[id]
    }
  }
}

// Context and canvas creation helper functions
function createCanvas (element, onDone, pixelRatio) {
  var canvas = document.createElement('canvas');
  extend(canvas.style, {
    border: 0,
    margin: 0,
    padding: 0,
    top: 0,
    left: 0
  });
  element.appendChild(canvas);

  if (element === document.body) {
    canvas.style.position = 'absolute';
    extend(element.style, {
      margin: 0,
      padding: 0
    });
  }

  function resize () {
    var w = window.innerWidth;
    var h = window.innerHeight;
    if (element !== document.body) {
      var bounds = element.getBoundingClientRect();
      w = bounds.right - bounds.left;
      h = bounds.bottom - bounds.top;
    }
    canvas.width = pixelRatio * w;
    canvas.height = pixelRatio * h;
    extend(canvas.style, {
      width: w + 'px',
      height: h + 'px'
    });
  }

  window.addEventListener('resize', resize, false);

  function onDestroy () {
    window.removeEventListener('resize', resize);
    element.removeChild(canvas);
  }

  resize();

  return {
    canvas: canvas,
    onDestroy: onDestroy
  }
}

function createContext (canvas, contexAttributes) {
  function get (name) {
    try {
      return canvas.getContext(name, contexAttributes)
    } catch (e) {
      return null
    }
  }
  return (
    get('webgl') ||
    get('experimental-webgl') ||
    get('webgl-experimental')
  )
}

function isHTMLElement (obj) {
  return (
    typeof obj.nodeName === 'string' &&
    typeof obj.appendChild === 'function' &&
    typeof obj.getBoundingClientRect === 'function'
  )
}

function isWebGLContext (obj) {
  return (
    typeof obj.drawArrays === 'function' ||
    typeof obj.drawElements === 'function'
  )
}

function parseExtensions (input) {
  if (typeof input === 'string') {
    return input.split()
  }
  check$1(Array.isArray(input), 'invalid extension array');
  return input
}

function getElement (desc) {
  if (typeof desc === 'string') {
    check$1(typeof document !== 'undefined', 'not supported outside of DOM');
    return document.querySelector(desc)
  }
  return desc
}

function parseArgs (args_) {
  var args = args_ || {};
  var element, container, canvas, gl;
  var contextAttributes = {};
  var extensions = [];
  var optionalExtensions = [];
  var pixelRatio = (typeof window === 'undefined' ? 1 : window.devicePixelRatio);
  var profile = false;
  var onDone = function (err) {
    if (err) {
      check$1.raise(err);
    }
  };
  var onDestroy = function () {};
  if (typeof args === 'string') {
    check$1(
      typeof document !== 'undefined',
      'selector queries only supported in DOM enviroments');
    element = document.querySelector(args);
    check$1(element, 'invalid query string for element');
  } else if (typeof args === 'object') {
    if (isHTMLElement(args)) {
      element = args;
    } else if (isWebGLContext(args)) {
      gl = args;
      canvas = gl.canvas;
    } else {
      check$1.constructor(args);
      if ('gl' in args) {
        gl = args.gl;
      } else if ('canvas' in args) {
        canvas = getElement(args.canvas);
      } else if ('container' in args) {
        container = getElement(args.container);
      }
      if ('attributes' in args) {
        contextAttributes = args.attributes;
        check$1.type(contextAttributes, 'object', 'invalid context attributes');
      }
      if ('extensions' in args) {
        extensions = parseExtensions(args.extensions);
      }
      if ('optionalExtensions' in args) {
        optionalExtensions = parseExtensions(args.optionalExtensions);
      }
      if ('onDone' in args) {
        check$1.type(
          args.onDone, 'function',
          'invalid or missing onDone callback');
        onDone = args.onDone;
      }
      if ('profile' in args) {
        profile = !!args.profile;
      }
      if ('pixelRatio' in args) {
        pixelRatio = +args.pixelRatio;
        check$1(pixelRatio > 0, 'invalid pixel ratio');
      }
    }
  } else {
    check$1.raise('invalid arguments to regl');
  }

  if (element) {
    if (element.nodeName.toLowerCase() === 'canvas') {
      canvas = element;
    } else {
      container = element;
    }
  }

  if (!gl) {
    if (!canvas) {
      check$1(
        typeof document !== 'undefined',
        'must manually specify webgl context outside of DOM environments');
      var result = createCanvas(container || document.body, onDone, pixelRatio);
      if (!result) {
        return null
      }
      canvas = result.canvas;
      onDestroy = result.onDestroy;
    }
    gl = createContext(canvas, contextAttributes);
  }

  if (!gl) {
    onDestroy();
    onDone('webgl not supported, try upgrading your browser or graphics drivers http://get.webgl.org');
    return null
  }

  return {
    gl: gl,
    canvas: canvas,
    container: container,
    extensions: extensions,
    optionalExtensions: optionalExtensions,
    pixelRatio: pixelRatio,
    profile: profile,
    onDone: onDone,
    onDestroy: onDestroy
  }
}

function createExtensionCache (gl, config) {
  var extensions = {};

  function tryLoadExtension (name_) {
    check$1.type(name_, 'string', 'extension name must be string');
    var name = name_.toLowerCase();
    var ext;
    try {
      ext = extensions[name] = gl.getExtension(name);
    } catch (e) {}
    return !!ext
  }

  for (var i = 0; i < config.extensions.length; ++i) {
    var name = config.extensions[i];
    if (!tryLoadExtension(name)) {
      config.onDestroy();
      config.onDone('"' + name + '" extension is not supported by the current WebGL context, try upgrading your system or a different browser');
      return null
    }
  }

  config.optionalExtensions.forEach(tryLoadExtension);

  return {
    extensions: extensions,
    restore: function () {
      Object.keys(extensions).forEach(function (name) {
        if (!tryLoadExtension(name)) {
          throw new Error('(regl): error restoring extension ' + name)
        }
      });
    }
  }
}

var GL_SUBPIXEL_BITS = 0x0D50;
var GL_RED_BITS = 0x0D52;
var GL_GREEN_BITS = 0x0D53;
var GL_BLUE_BITS = 0x0D54;
var GL_ALPHA_BITS = 0x0D55;
var GL_DEPTH_BITS = 0x0D56;
var GL_STENCIL_BITS = 0x0D57;

var GL_ALIASED_POINT_SIZE_RANGE = 0x846D;
var GL_ALIASED_LINE_WIDTH_RANGE = 0x846E;

var GL_MAX_TEXTURE_SIZE = 0x0D33;
var GL_MAX_VIEWPORT_DIMS = 0x0D3A;
var GL_MAX_VERTEX_ATTRIBS = 0x8869;
var GL_MAX_VERTEX_UNIFORM_VECTORS = 0x8DFB;
var GL_MAX_VARYING_VECTORS = 0x8DFC;
var GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D;
var GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS = 0x8B4C;
var GL_MAX_TEXTURE_IMAGE_UNITS = 0x8872;
var GL_MAX_FRAGMENT_UNIFORM_VECTORS = 0x8DFD;
var GL_MAX_CUBE_MAP_TEXTURE_SIZE = 0x851C;
var GL_MAX_RENDERBUFFER_SIZE = 0x84E8;

var GL_VENDOR = 0x1F00;
var GL_RENDERER = 0x1F01;
var GL_VERSION = 0x1F02;
var GL_SHADING_LANGUAGE_VERSION = 0x8B8C;

var GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF;

var GL_MAX_COLOR_ATTACHMENTS_WEBGL = 0x8CDF;
var GL_MAX_DRAW_BUFFERS_WEBGL = 0x8824;

var wrapLimits = function (gl, extensions) {
  var maxAnisotropic = 1;
  if (extensions.ext_texture_filter_anisotropic) {
    maxAnisotropic = gl.getParameter(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT);
  }

  var maxDrawbuffers = 1;
  var maxColorAttachments = 1;
  if (extensions.webgl_draw_buffers) {
    maxDrawbuffers = gl.getParameter(GL_MAX_DRAW_BUFFERS_WEBGL);
    maxColorAttachments = gl.getParameter(GL_MAX_COLOR_ATTACHMENTS_WEBGL);
  }

  return {
    // drawing buffer bit depth
    colorBits: [
      gl.getParameter(GL_RED_BITS),
      gl.getParameter(GL_GREEN_BITS),
      gl.getParameter(GL_BLUE_BITS),
      gl.getParameter(GL_ALPHA_BITS)
    ],
    depthBits: gl.getParameter(GL_DEPTH_BITS),
    stencilBits: gl.getParameter(GL_STENCIL_BITS),
    subpixelBits: gl.getParameter(GL_SUBPIXEL_BITS),

    // supported extensions
    extensions: Object.keys(extensions).filter(function (ext) {
      return !!extensions[ext]
    }),

    // max aniso samples
    maxAnisotropic: maxAnisotropic,

    // max draw buffers
    maxDrawbuffers: maxDrawbuffers,
    maxColorAttachments: maxColorAttachments,

    // point and line size ranges
    pointSizeDims: gl.getParameter(GL_ALIASED_POINT_SIZE_RANGE),
    lineWidthDims: gl.getParameter(GL_ALIASED_LINE_WIDTH_RANGE),
    maxViewportDims: gl.getParameter(GL_MAX_VIEWPORT_DIMS),
    maxCombinedTextureUnits: gl.getParameter(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS),
    maxCubeMapSize: gl.getParameter(GL_MAX_CUBE_MAP_TEXTURE_SIZE),
    maxRenderbufferSize: gl.getParameter(GL_MAX_RENDERBUFFER_SIZE),
    maxTextureUnits: gl.getParameter(GL_MAX_TEXTURE_IMAGE_UNITS),
    maxTextureSize: gl.getParameter(GL_MAX_TEXTURE_SIZE),
    maxAttributes: gl.getParameter(GL_MAX_VERTEX_ATTRIBS),
    maxVertexUniforms: gl.getParameter(GL_MAX_VERTEX_UNIFORM_VECTORS),
    maxVertexTextureUnits: gl.getParameter(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS),
    maxVaryingVectors: gl.getParameter(GL_MAX_VARYING_VECTORS),
    maxFragmentUniforms: gl.getParameter(GL_MAX_FRAGMENT_UNIFORM_VECTORS),

    // vendor info
    glsl: gl.getParameter(GL_SHADING_LANGUAGE_VERSION),
    renderer: gl.getParameter(GL_RENDERER),
    vendor: gl.getParameter(GL_VENDOR),
    version: gl.getParameter(GL_VERSION)
  }
};

function isNDArrayLike (obj) {
  return (
    !!obj &&
    typeof obj === 'object' &&
    Array.isArray(obj.shape) &&
    Array.isArray(obj.stride) &&
    typeof obj.offset === 'number' &&
    obj.shape.length === obj.stride.length &&
    (Array.isArray(obj.data) ||
      isTypedArray(obj.data)))
}

var values = function (obj) {
  return Object.keys(obj).map(function (key) { return obj[key] })
};

function loop (n, f) {
  var result = Array(n);
  for (var i = 0; i < n; ++i) {
    result[i] = f(i);
  }
  return result
}

var GL_BYTE$1 = 5120;
var GL_UNSIGNED_BYTE$2 = 5121;
var GL_SHORT$1 = 5122;
var GL_UNSIGNED_SHORT$1 = 5123;
var GL_INT$1 = 5124;
var GL_UNSIGNED_INT$1 = 5125;
var GL_FLOAT$2 = 5126;

var bufferPool = loop(8, function () {
  return []
});

function nextPow16 (v) {
  for (var i = 16; i <= (1 << 28); i *= 16) {
    if (v <= i) {
      return i
    }
  }
  return 0
}

function log2 (v) {
  var r, shift;
  r = (v > 0xFFFF) << 4;
  v >>>= r;
  shift = (v > 0xFF) << 3;
  v >>>= shift; r |= shift;
  shift = (v > 0xF) << 2;
  v >>>= shift; r |= shift;
  shift = (v > 0x3) << 1;
  v >>>= shift; r |= shift;
  return r | (v >> 1)
}

function alloc (n) {
  var sz = nextPow16(n);
  var bin = bufferPool[log2(sz) >> 2];
  if (bin.length > 0) {
    return bin.pop()
  }
  return new ArrayBuffer(sz)
}

function free (buf) {
  bufferPool[log2(buf.byteLength) >> 2].push(buf);
}

function allocType (type, n) {
  var result = null;
  switch (type) {
    case GL_BYTE$1:
      result = new Int8Array(alloc(n), 0, n);
      break
    case GL_UNSIGNED_BYTE$2:
      result = new Uint8Array(alloc(n), 0, n);
      break
    case GL_SHORT$1:
      result = new Int16Array(alloc(2 * n), 0, n);
      break
    case GL_UNSIGNED_SHORT$1:
      result = new Uint16Array(alloc(2 * n), 0, n);
      break
    case GL_INT$1:
      result = new Int32Array(alloc(4 * n), 0, n);
      break
    case GL_UNSIGNED_INT$1:
      result = new Uint32Array(alloc(4 * n), 0, n);
      break
    case GL_FLOAT$2:
      result = new Float32Array(alloc(4 * n), 0, n);
      break
    default:
      return null
  }
  if (result.length !== n) {
    return result.subarray(0, n)
  }
  return result
}

function freeType (array) {
  free(array.buffer);
}

var pool = {
  alloc: alloc,
  free: free,
  allocType: allocType,
  freeType: freeType
};

var flattenUtils = {
  shape: arrayShape$1,
  flatten: flattenArray
};

function flatten1D (array, nx, out) {
  for (var i = 0; i < nx; ++i) {
    out[i] = array[i];
  }
}

function flatten2D (array, nx, ny, out) {
  var ptr = 0;
  for (var i = 0; i < nx; ++i) {
    var row = array[i];
    for (var j = 0; j < ny; ++j) {
      out[ptr++] = row[j];
    }
  }
}

function flatten3D (array, nx, ny, nz, out, ptr_) {
  var ptr = ptr_;
  for (var i = 0; i < nx; ++i) {
    var row = array[i];
    for (var j = 0; j < ny; ++j) {
      var col = row[j];
      for (var k = 0; k < nz; ++k) {
        out[ptr++] = col[k];
      }
    }
  }
}

function flattenRec (array, shape, level, out, ptr) {
  var stride = 1;
  for (var i = level + 1; i < shape.length; ++i) {
    stride *= shape[i];
  }
  var n = shape[level];
  if (shape.length - level === 4) {
    var nx = shape[level + 1];
    var ny = shape[level + 2];
    var nz = shape[level + 3];
    for (i = 0; i < n; ++i) {
      flatten3D(array[i], nx, ny, nz, out, ptr);
      ptr += stride;
    }
  } else {
    for (i = 0; i < n; ++i) {
      flattenRec(array[i], shape, level + 1, out, ptr);
      ptr += stride;
    }
  }
}

function flattenArray (array, shape, type, out_) {
  var sz = 1;
  if (shape.length) {
    for (var i = 0; i < shape.length; ++i) {
      sz *= shape[i];
    }
  } else {
    sz = 0;
  }
  var out = out_ || pool.allocType(type, sz);
  switch (shape.length) {
    case 0:
      break
    case 1:
      flatten1D(array, shape[0], out);
      break
    case 2:
      flatten2D(array, shape[0], shape[1], out);
      break
    case 3:
      flatten3D(array, shape[0], shape[1], shape[2], out, 0);
      break
    default:
      flattenRec(array, shape, 0, out, 0);
  }
  return out
}

function arrayShape$1 (array_) {
  var shape = [];
  for (var array = array_; array.length; array = array[0]) {
    shape.push(array.length);
  }
  return shape
}

var int8 = 5120;
var int16 = 5122;
var int32 = 5124;
var uint8 = 5121;
var uint16 = 5123;
var uint32 = 5125;
var float = 5126;
var float32 = 5126;
var glTypes = {
	int8: int8,
	int16: int16,
	int32: int32,
	uint8: uint8,
	uint16: uint16,
	uint32: uint32,
	float: float,
	float32: float32
};

var dynamic$1 = 35048;
var stream = 35040;
var usageTypes = {
	dynamic: dynamic$1,
	stream: stream,
	"static": 35044
};

var arrayFlatten = flattenUtils.flatten;
var arrayShape = flattenUtils.shape;

var GL_STATIC_DRAW = 0x88E4;
var GL_STREAM_DRAW = 0x88E0;

var GL_UNSIGNED_BYTE$1 = 5121;
var GL_FLOAT$1 = 5126;

var DTYPES_SIZES = [];
DTYPES_SIZES[5120] = 1; // int8
DTYPES_SIZES[5122] = 2; // int16
DTYPES_SIZES[5124] = 4; // int32
DTYPES_SIZES[5121] = 1; // uint8
DTYPES_SIZES[5123] = 2; // uint16
DTYPES_SIZES[5125] = 4; // uint32
DTYPES_SIZES[5126] = 4; // float32

function typedArrayCode (data) {
  return arrayTypes[Object.prototype.toString.call(data)] | 0
}

function copyArray (out, inp) {
  for (var i = 0; i < inp.length; ++i) {
    out[i] = inp[i];
  }
}

function transpose (
  result, data, shapeX, shapeY, strideX, strideY, offset) {
  var ptr = 0;
  for (var i = 0; i < shapeX; ++i) {
    for (var j = 0; j < shapeY; ++j) {
      result[ptr++] = data[strideX * i + strideY * j + offset];
    }
  }
}

function wrapBufferState (gl, stats, config) {
  var bufferCount = 0;
  var bufferSet = {};

  function REGLBuffer (type) {
    this.id = bufferCount++;
    this.buffer = gl.createBuffer();
    this.type = type;
    this.usage = GL_STATIC_DRAW;
    this.byteLength = 0;
    this.dimension = 1;
    this.dtype = GL_UNSIGNED_BYTE$1;

    this.persistentData = null;

    if (config.profile) {
      this.stats = {size: 0};
    }
  }

  REGLBuffer.prototype.bind = function () {
    gl.bindBuffer(this.type, this.buffer);
  };

  REGLBuffer.prototype.destroy = function () {
    destroy(this);
  };

  var streamPool = [];

  function createStream (type, data) {
    var buffer = streamPool.pop();
    if (!buffer) {
      buffer = new REGLBuffer(type);
    }
    buffer.bind();
    initBufferFromData(buffer, data, GL_STREAM_DRAW, 0, 1, false);
    return buffer
  }

  function destroyStream (stream$$1) {
    streamPool.push(stream$$1);
  }

  function initBufferFromTypedArray (buffer, data, usage) {
    buffer.byteLength = data.byteLength;
    gl.bufferData(buffer.type, data, usage);
  }

  function initBufferFromData (buffer, data, usage, dtype, dimension, persist) {
    var shape;
    buffer.usage = usage;
    if (Array.isArray(data)) {
      buffer.dtype = dtype || GL_FLOAT$1;
      if (data.length > 0) {
        var flatData;
        if (Array.isArray(data[0])) {
          shape = arrayShape(data);
          var dim = 1;
          for (var i = 1; i < shape.length; ++i) {
            dim *= shape[i];
          }
          buffer.dimension = dim;
          flatData = arrayFlatten(data, shape, buffer.dtype);
          initBufferFromTypedArray(buffer, flatData, usage);
          if (persist) {
            buffer.persistentData = flatData;
          } else {
            pool.freeType(flatData);
          }
        } else if (typeof data[0] === 'number') {
          buffer.dimension = dimension;
          var typedData = pool.allocType(buffer.dtype, data.length);
          copyArray(typedData, data);
          initBufferFromTypedArray(buffer, typedData, usage);
          if (persist) {
            buffer.persistentData = typedData;
          } else {
            pool.freeType(typedData);
          }
        } else if (isTypedArray(data[0])) {
          buffer.dimension = data[0].length;
          buffer.dtype = dtype || typedArrayCode(data[0]) || GL_FLOAT$1;
          flatData = arrayFlatten(
            data,
            [data.length, data[0].length],
            buffer.dtype);
          initBufferFromTypedArray(buffer, flatData, usage);
          if (persist) {
            buffer.persistentData = flatData;
          } else {
            pool.freeType(flatData);
          }
        } else {
          check$1.raise('invalid buffer data');
        }
      }
    } else if (isTypedArray(data)) {
      buffer.dtype = dtype || typedArrayCode(data);
      buffer.dimension = dimension;
      initBufferFromTypedArray(buffer, data, usage);
      if (persist) {
        buffer.persistentData = new Uint8Array(new Uint8Array(data.buffer));
      }
    } else if (isNDArrayLike(data)) {
      shape = data.shape;
      var stride = data.stride;
      var offset = data.offset;

      var shapeX = 0;
      var shapeY = 0;
      var strideX = 0;
      var strideY = 0;
      if (shape.length === 1) {
        shapeX = shape[0];
        shapeY = 1;
        strideX = stride[0];
        strideY = 0;
      } else if (shape.length === 2) {
        shapeX = shape[0];
        shapeY = shape[1];
        strideX = stride[0];
        strideY = stride[1];
      } else {
        check$1.raise('invalid shape');
      }

      buffer.dtype = dtype || typedArrayCode(data.data) || GL_FLOAT$1;
      buffer.dimension = shapeY;

      var transposeData = pool.allocType(buffer.dtype, shapeX * shapeY);
      transpose(transposeData,
        data.data,
        shapeX, shapeY,
        strideX, strideY,
        offset);
      initBufferFromTypedArray(buffer, transposeData, usage);
      if (persist) {
        buffer.persistentData = transposeData;
      } else {
        pool.freeType(transposeData);
      }
    } else {
      check$1.raise('invalid buffer data');
    }
  }

  function destroy (buffer) {
    stats.bufferCount--;

    var handle = buffer.buffer;
    check$1(handle, 'buffer must not be deleted already');
    gl.deleteBuffer(handle);
    buffer.buffer = null;
    delete bufferSet[buffer.id];
  }

  function createBuffer (options, type, deferInit, persistent) {
    stats.bufferCount++;

    var buffer = new REGLBuffer(type);
    bufferSet[buffer.id] = buffer;

    function reglBuffer (options) {
      var usage = GL_STATIC_DRAW;
      var data = null;
      var byteLength = 0;
      var dtype = 0;
      var dimension = 1;
      if (Array.isArray(options) ||
          isTypedArray(options) ||
          isNDArrayLike(options)) {
        data = options;
      } else if (typeof options === 'number') {
        byteLength = options | 0;
      } else if (options) {
        check$1.type(
          options, 'object',
          'buffer arguments must be an object, a number or an array');

        if ('data' in options) {
          check$1(
            data === null ||
            Array.isArray(data) ||
            isTypedArray(data) ||
            isNDArrayLike(data),
            'invalid data for buffer');
          data = options.data;
        }

        if ('usage' in options) {
          check$1.parameter(options.usage, usageTypes, 'invalid buffer usage');
          usage = usageTypes[options.usage];
        }

        if ('type' in options) {
          check$1.parameter(options.type, glTypes, 'invalid buffer type');
          dtype = glTypes[options.type];
        }

        if ('dimension' in options) {
          check$1.type(options.dimension, 'number', 'invalid dimension');
          dimension = options.dimension | 0;
        }

        if ('length' in options) {
          check$1.nni(byteLength, 'buffer length must be a nonnegative integer');
          byteLength = options.length | 0;
        }
      }

      buffer.bind();
      if (!data) {
        gl.bufferData(buffer.type, byteLength, usage);
        buffer.dtype = dtype || GL_UNSIGNED_BYTE$1;
        buffer.usage = usage;
        buffer.dimension = dimension;
        buffer.byteLength = byteLength;
      } else {
        initBufferFromData(buffer, data, usage, dtype, dimension, persistent);
      }

      if (config.profile) {
        buffer.stats.size = buffer.byteLength * DTYPES_SIZES[buffer.dtype];
      }

      return reglBuffer
    }

    function setSubData (data, offset) {
      check$1(offset + data.byteLength <= buffer.byteLength,
        'invalid buffer subdata call, buffer is too small. ' + ' Can\'t write data of size ' + data.byteLength + ' starting from offset ' + offset + ' to a buffer of size ' + buffer.byteLength);

      gl.bufferSubData(buffer.type, offset, data);
    }

    function subdata (data, offset_) {
      var offset = (offset_ || 0) | 0;
      var shape;
      buffer.bind();
      if (Array.isArray(data)) {
        if (data.length > 0) {
          if (typeof data[0] === 'number') {
            var converted = pool.allocType(buffer.dtype, data.length);
            copyArray(converted, data);
            setSubData(converted, offset);
            pool.freeType(converted);
          } else if (Array.isArray(data[0]) || isTypedArray(data[0])) {
            shape = arrayShape(data);
            var flatData = arrayFlatten(data, shape, buffer.dtype);
            setSubData(flatData, offset);
            pool.freeType(flatData);
          } else {
            check$1.raise('invalid buffer data');
          }
        }
      } else if (isTypedArray(data)) {
        setSubData(data, offset);
      } else if (isNDArrayLike(data)) {
        shape = data.shape;
        var stride = data.stride;

        var shapeX = 0;
        var shapeY = 0;
        var strideX = 0;
        var strideY = 0;
        if (shape.length === 1) {
          shapeX = shape[0];
          shapeY = 1;
          strideX = stride[0];
          strideY = 0;
        } else if (shape.length === 2) {
          shapeX = shape[0];
          shapeY = shape[1];
          strideX = stride[0];
          strideY = stride[1];
        } else {
          check$1.raise('invalid shape');
        }
        var dtype = Array.isArray(data.data)
          ? buffer.dtype
          : typedArrayCode(data.data);

        var transposeData = pool.allocType(dtype, shapeX * shapeY);
        transpose(transposeData,
          data.data,
          shapeX, shapeY,
          strideX, strideY,
          data.offset);
        setSubData(transposeData, offset);
        pool.freeType(transposeData);
      } else {
        check$1.raise('invalid data for buffer subdata');
      }
      return reglBuffer
    }

    if (!deferInit) {
      reglBuffer(options);
    }

    reglBuffer._reglType = 'buffer';
    reglBuffer._buffer = buffer;
    reglBuffer.subdata = subdata;
    if (config.profile) {
      reglBuffer.stats = buffer.stats;
    }
    reglBuffer.destroy = function () { destroy(buffer); };

    return reglBuffer
  }

  function restoreBuffers () {
    values(bufferSet).forEach(function (buffer) {
      buffer.buffer = gl.createBuffer();
      gl.bindBuffer(buffer.type, buffer.buffer);
      gl.bufferData(
        buffer.type, buffer.persistentData || buffer.byteLength, buffer.usage);
    });
  }

  if (config.profile) {
    stats.getTotalBufferSize = function () {
      var total = 0;
      // TODO: Right now, the streams are not part of the total count.
      Object.keys(bufferSet).forEach(function (key) {
        total += bufferSet[key].stats.size;
      });
      return total
    };
  }

  return {
    create: createBuffer,

    createStream: createStream,
    destroyStream: destroyStream,

    clear: function () {
      values(bufferSet).forEach(destroy);
      streamPool.forEach(destroy);
    },

    getBuffer: function (wrapper) {
      if (wrapper && wrapper._buffer instanceof REGLBuffer) {
        return wrapper._buffer
      }
      return null
    },

    restore: restoreBuffers,

    _initBuffer: initBufferFromData
  }
}

var points = 0;
var point = 0;
var lines = 1;
var line = 1;
var triangles = 4;
var triangle = 4;
var primTypes = {
	points: points,
	point: point,
	lines: lines,
	line: line,
	triangles: triangles,
	triangle: triangle,
	"line loop": 2,
	"line strip": 3,
	"triangle strip": 5,
	"triangle fan": 6
};

var GL_POINTS = 0;
var GL_LINES = 1;
var GL_TRIANGLES = 4;

var GL_BYTE$2 = 5120;
var GL_UNSIGNED_BYTE$3 = 5121;
var GL_SHORT$2 = 5122;
var GL_UNSIGNED_SHORT$2 = 5123;
var GL_INT$2 = 5124;
var GL_UNSIGNED_INT$2 = 5125;

var GL_ELEMENT_ARRAY_BUFFER = 34963;

var GL_STREAM_DRAW$1 = 0x88E0;
var GL_STATIC_DRAW$1 = 0x88E4;

function wrapElementsState (gl, extensions, bufferState, stats) {
  var elementSet = {};
  var elementCount = 0;

  var elementTypes = {
    'uint8': GL_UNSIGNED_BYTE$3,
    'uint16': GL_UNSIGNED_SHORT$2
  };

  if (extensions.oes_element_index_uint) {
    elementTypes.uint32 = GL_UNSIGNED_INT$2;
  }

  function REGLElementBuffer (buffer) {
    this.id = elementCount++;
    elementSet[this.id] = this;
    this.buffer = buffer;
    this.primType = GL_TRIANGLES;
    this.vertCount = 0;
    this.type = 0;
  }

  REGLElementBuffer.prototype.bind = function () {
    this.buffer.bind();
  };

  var bufferPool = [];

  function createElementStream (data) {
    var result = bufferPool.pop();
    if (!result) {
      result = new REGLElementBuffer(bufferState.create(
        null,
        GL_ELEMENT_ARRAY_BUFFER,
        true,
        false)._buffer);
    }
    initElements(result, data, GL_STREAM_DRAW$1, -1, -1, 0, 0);
    return result
  }

  function destroyElementStream (elements) {
    bufferPool.push(elements);
  }

  function initElements (
    elements,
    data,
    usage,
    prim,
    count,
    byteLength,
    type) {
    elements.buffer.bind();
    if (data) {
      var predictedType = type;
      if (!type && (
          !isTypedArray(data) ||
         (isNDArrayLike(data) && !isTypedArray(data.data)))) {
        predictedType = extensions.oes_element_index_uint
          ? GL_UNSIGNED_INT$2
          : GL_UNSIGNED_SHORT$2;
      }
      bufferState._initBuffer(
        elements.buffer,
        data,
        usage,
        predictedType,
        3);
    } else {
      gl.bufferData(GL_ELEMENT_ARRAY_BUFFER, byteLength, usage);
      elements.buffer.dtype = dtype || GL_UNSIGNED_BYTE$3;
      elements.buffer.usage = usage;
      elements.buffer.dimension = 3;
      elements.buffer.byteLength = byteLength;
    }

    var dtype = type;
    if (!type) {
      switch (elements.buffer.dtype) {
        case GL_UNSIGNED_BYTE$3:
        case GL_BYTE$2:
          dtype = GL_UNSIGNED_BYTE$3;
          break

        case GL_UNSIGNED_SHORT$2:
        case GL_SHORT$2:
          dtype = GL_UNSIGNED_SHORT$2;
          break

        case GL_UNSIGNED_INT$2:
        case GL_INT$2:
          dtype = GL_UNSIGNED_INT$2;
          break

        default:
          check$1.raise('unsupported type for element array');
      }
      elements.buffer.dtype = dtype;
    }
    elements.type = dtype;

    // Check oes_element_index_uint extension
    check$1(
      dtype !== GL_UNSIGNED_INT$2 ||
      !!extensions.oes_element_index_uint,
      '32 bit element buffers not supported, enable oes_element_index_uint first');

    // try to guess default primitive type and arguments
    var vertCount = count;
    if (vertCount < 0) {
      vertCount = elements.buffer.byteLength;
      if (dtype === GL_UNSIGNED_SHORT$2) {
        vertCount >>= 1;
      } else if (dtype === GL_UNSIGNED_INT$2) {
        vertCount >>= 2;
      }
    }
    elements.vertCount = vertCount;

    // try to guess primitive type from cell dimension
    var primType = prim;
    if (prim < 0) {
      primType = GL_TRIANGLES;
      var dimension = elements.buffer.dimension;
      if (dimension === 1) primType = GL_POINTS;
      if (dimension === 2) primType = GL_LINES;
      if (dimension === 3) primType = GL_TRIANGLES;
    }
    elements.primType = primType;
  }

  function destroyElements (elements) {
    stats.elementsCount--;

    check$1(elements.buffer !== null, 'must not double destroy elements');
    delete elementSet[elements.id];
    elements.buffer.destroy();
    elements.buffer = null;
  }

  function createElements (options, persistent) {
    var buffer = bufferState.create(null, GL_ELEMENT_ARRAY_BUFFER, true);
    var elements = new REGLElementBuffer(buffer._buffer);
    stats.elementsCount++;

    function reglElements (options) {
      if (!options) {
        buffer();
        elements.primType = GL_TRIANGLES;
        elements.vertCount = 0;
        elements.type = GL_UNSIGNED_BYTE$3;
      } else if (typeof options === 'number') {
        buffer(options);
        elements.primType = GL_TRIANGLES;
        elements.vertCount = options | 0;
        elements.type = GL_UNSIGNED_BYTE$3;
      } else {
        var data = null;
        var usage = GL_STATIC_DRAW$1;
        var primType = -1;
        var vertCount = -1;
        var byteLength = 0;
        var dtype = 0;
        if (Array.isArray(options) ||
            isTypedArray(options) ||
            isNDArrayLike(options)) {
          data = options;
        } else {
          check$1.type(options, 'object', 'invalid arguments for elements');
          if ('data' in options) {
            data = options.data;
            check$1(
                Array.isArray(data) ||
                isTypedArray(data) ||
                isNDArrayLike(data),
                'invalid data for element buffer');
          }
          if ('usage' in options) {
            check$1.parameter(
              options.usage,
              usageTypes,
              'invalid element buffer usage');
            usage = usageTypes[options.usage];
          }
          if ('primitive' in options) {
            check$1.parameter(
              options.primitive,
              primTypes,
              'invalid element buffer primitive');
            primType = primTypes[options.primitive];
          }
          if ('count' in options) {
            check$1(
              typeof options.count === 'number' && options.count >= 0,
              'invalid vertex count for elements');
            vertCount = options.count | 0;
          }
          if ('type' in options) {
            check$1.parameter(
              options.type,
              elementTypes,
              'invalid buffer type');
            dtype = elementTypes[options.type];
          }
          if ('length' in options) {
            byteLength = options.length | 0;
          } else {
            byteLength = vertCount;
            if (dtype === GL_UNSIGNED_SHORT$2 || dtype === GL_SHORT$2) {
              byteLength *= 2;
            } else if (dtype === GL_UNSIGNED_INT$2 || dtype === GL_INT$2) {
              byteLength *= 4;
            }
          }
        }
        initElements(
          elements,
          data,
          usage,
          primType,
          vertCount,
          byteLength,
          dtype);
      }

      return reglElements
    }

    reglElements(options);

    reglElements._reglType = 'elements';
    reglElements._elements = elements;
    reglElements.subdata = function (data, offset) {
      buffer.subdata(data, offset);
      return reglElements
    };
    reglElements.destroy = function () {
      destroyElements(elements);
    };

    return reglElements
  }

  return {
    create: createElements,
    createStream: createElementStream,
    destroyStream: destroyElementStream,
    getElements: function (elements) {
      if (typeof elements === 'function' &&
          elements._elements instanceof REGLElementBuffer) {
        return elements._elements
      }
      return null
    },
    clear: function () {
      values(elementSet).forEach(destroyElements);
    }
  }
}

var FLOAT = new Float32Array(1);
var INT = new Uint32Array(FLOAT.buffer);

var GL_UNSIGNED_SHORT$4 = 5123;

function convertToHalfFloat (array) {
  var ushorts = pool.allocType(GL_UNSIGNED_SHORT$4, array.length);

  for (var i = 0; i < array.length; ++i) {
    if (isNaN(array[i])) {
      ushorts[i] = 0xffff;
    } else if (array[i] === Infinity) {
      ushorts[i] = 0x7c00;
    } else if (array[i] === -Infinity) {
      ushorts[i] = 0xfc00;
    } else {
      FLOAT[0] = array[i];
      var x = INT[0];

      var sgn = (x >>> 31) << 15;
      var exp = ((x << 1) >>> 24) - 127;
      var frac = (x >> 13) & ((1 << 10) - 1);

      if (exp < -24) {
        // round non-representable denormals to 0
        ushorts[i] = sgn;
      } else if (exp < -14) {
        // handle denormals
        var s = -14 - exp;
        ushorts[i] = sgn + ((frac + (1 << 10)) >> s);
      } else if (exp > 15) {
        // round overflow to +/- Infinity
        ushorts[i] = sgn + 0x7c00;
      } else {
        // otherwise convert directly
        ushorts[i] = sgn + ((exp + 15) << 10) + frac;
      }
    }
  }

  return ushorts
}

function isArrayLike (s) {
  return Array.isArray(s) || isTypedArray(s)
}

var GL_COMPRESSED_TEXTURE_FORMATS = 0x86A3;

var GL_TEXTURE_2D = 0x0DE1;
var GL_TEXTURE_CUBE_MAP = 0x8513;
var GL_TEXTURE_CUBE_MAP_POSITIVE_X = 0x8515;

var GL_RGBA = 0x1908;
var GL_ALPHA = 0x1906;
var GL_RGB = 0x1907;
var GL_LUMINANCE = 0x1909;
var GL_LUMINANCE_ALPHA = 0x190A;

var GL_RGBA4 = 0x8056;
var GL_RGB5_A1 = 0x8057;
var GL_RGB565 = 0x8D62;

var GL_UNSIGNED_SHORT_4_4_4_4$1 = 0x8033;
var GL_UNSIGNED_SHORT_5_5_5_1$1 = 0x8034;
var GL_UNSIGNED_SHORT_5_6_5$1 = 0x8363;
var GL_UNSIGNED_INT_24_8_WEBGL$1 = 0x84FA;

var GL_DEPTH_COMPONENT = 0x1902;
var GL_DEPTH_STENCIL = 0x84F9;

var GL_SRGB_EXT = 0x8C40;
var GL_SRGB_ALPHA_EXT = 0x8C42;

var GL_HALF_FLOAT_OES$1 = 0x8D61;

var GL_COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0;
var GL_COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1;
var GL_COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2;
var GL_COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3;

var GL_COMPRESSED_RGB_ATC_WEBGL = 0x8C92;
var GL_COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL = 0x8C93;
var GL_COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL = 0x87EE;

var GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00;
var GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8C01;
var GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02;
var GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03;

var GL_COMPRESSED_RGB_ETC1_WEBGL = 0x8D64;

var GL_UNSIGNED_BYTE$4 = 0x1401;
var GL_UNSIGNED_SHORT$3 = 0x1403;
var GL_UNSIGNED_INT$3 = 0x1405;
var GL_FLOAT$3 = 0x1406;

var GL_TEXTURE_WRAP_S = 0x2802;
var GL_TEXTURE_WRAP_T = 0x2803;

var GL_REPEAT = 0x2901;
var GL_CLAMP_TO_EDGE$1 = 0x812F;
var GL_MIRRORED_REPEAT = 0x8370;

var GL_TEXTURE_MAG_FILTER = 0x2800;
var GL_TEXTURE_MIN_FILTER = 0x2801;

var GL_NEAREST$1 = 0x2600;
var GL_LINEAR = 0x2601;
var GL_NEAREST_MIPMAP_NEAREST$1 = 0x2700;
var GL_LINEAR_MIPMAP_NEAREST$1 = 0x2701;
var GL_NEAREST_MIPMAP_LINEAR$1 = 0x2702;
var GL_LINEAR_MIPMAP_LINEAR$1 = 0x2703;

var GL_GENERATE_MIPMAP_HINT = 0x8192;
var GL_DONT_CARE = 0x1100;
var GL_FASTEST = 0x1101;
var GL_NICEST = 0x1102;

var GL_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FE;

var GL_UNPACK_ALIGNMENT = 0x0CF5;
var GL_UNPACK_FLIP_Y_WEBGL = 0x9240;
var GL_UNPACK_PREMULTIPLY_ALPHA_WEBGL = 0x9241;
var GL_UNPACK_COLORSPACE_CONVERSION_WEBGL = 0x9243;

var GL_BROWSER_DEFAULT_WEBGL = 0x9244;

var GL_TEXTURE0 = 0x84C0;

var MIPMAP_FILTERS = [
  GL_NEAREST_MIPMAP_NEAREST$1,
  GL_NEAREST_MIPMAP_LINEAR$1,
  GL_LINEAR_MIPMAP_NEAREST$1,
  GL_LINEAR_MIPMAP_LINEAR$1
];

var CHANNELS_FORMAT = [
  0,
  GL_LUMINANCE,
  GL_LUMINANCE_ALPHA,
  GL_RGB,
  GL_RGBA
];

var FORMAT_CHANNELS = {};
FORMAT_CHANNELS[GL_LUMINANCE] =
FORMAT_CHANNELS[GL_ALPHA] =
FORMAT_CHANNELS[GL_DEPTH_COMPONENT] = 1;
FORMAT_CHANNELS[GL_DEPTH_STENCIL] =
FORMAT_CHANNELS[GL_LUMINANCE_ALPHA] = 2;
FORMAT_CHANNELS[GL_RGB] =
FORMAT_CHANNELS[GL_SRGB_EXT] = 3;
FORMAT_CHANNELS[GL_RGBA] =
FORMAT_CHANNELS[GL_SRGB_ALPHA_EXT] = 4;

function objectName (str) {
  return '[object ' + str + ']'
}

var CANVAS_CLASS = objectName('HTMLCanvasElement');
var CONTEXT2D_CLASS = objectName('CanvasRenderingContext2D');
var IMAGE_CLASS = objectName('HTMLImageElement');
var VIDEO_CLASS = objectName('HTMLVideoElement');

var PIXEL_CLASSES = Object.keys(arrayTypes).concat([
  CANVAS_CLASS,
  CONTEXT2D_CLASS,
  IMAGE_CLASS,
  VIDEO_CLASS
]);

// for every texture type, store
// the size in bytes.
var TYPE_SIZES = [];
TYPE_SIZES[GL_UNSIGNED_BYTE$4] = 1;
TYPE_SIZES[GL_FLOAT$3] = 4;
TYPE_SIZES[GL_HALF_FLOAT_OES$1] = 2;

TYPE_SIZES[GL_UNSIGNED_SHORT$3] = 2;
TYPE_SIZES[GL_UNSIGNED_INT$3] = 4;

var FORMAT_SIZES_SPECIAL = [];
FORMAT_SIZES_SPECIAL[GL_RGBA4] = 2;
FORMAT_SIZES_SPECIAL[GL_RGB5_A1] = 2;
FORMAT_SIZES_SPECIAL[GL_RGB565] = 2;
FORMAT_SIZES_SPECIAL[GL_DEPTH_STENCIL] = 4;

FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGB_S3TC_DXT1_EXT] = 0.5;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_S3TC_DXT1_EXT] = 0.5;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_S3TC_DXT3_EXT] = 1;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_S3TC_DXT5_EXT] = 1;

FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGB_ATC_WEBGL] = 0.5;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL] = 1;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL] = 1;

FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG] = 0.5;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG] = 0.25;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG] = 0.5;
FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG] = 0.25;

FORMAT_SIZES_SPECIAL[GL_COMPRESSED_RGB_ETC1_WEBGL] = 0.5;

function isNumericArray (arr) {
  return (
    Array.isArray(arr) &&
    (arr.length === 0 ||
    typeof arr[0] === 'number'))
}

function isRectArray (arr) {
  if (!Array.isArray(arr)) {
    return false
  }
  var width = arr.length;
  if (width === 0 || !isArrayLike(arr[0])) {
    return false
  }
  return true
}

function classString (x) {
  return Object.prototype.toString.call(x)
}

function isCanvasElement (object) {
  return classString(object) === CANVAS_CLASS
}

function isContext2D (object) {
  return classString(object) === CONTEXT2D_CLASS
}

function isImageElement (object) {
  return classString(object) === IMAGE_CLASS
}

function isVideoElement (object) {
  return classString(object) === VIDEO_CLASS
}

function isPixelData (object) {
  if (!object) {
    return false
  }
  var className = classString(object);
  if (PIXEL_CLASSES.indexOf(className) >= 0) {
    return true
  }
  return (
    isNumericArray(object) ||
    isRectArray(object) ||
    isNDArrayLike(object))
}

function typedArrayCode$1 (data) {
  return arrayTypes[Object.prototype.toString.call(data)] | 0
}

function convertData (result, data) {
  var n = data.length;
  switch (result.type) {
    case GL_UNSIGNED_BYTE$4:
    case GL_UNSIGNED_SHORT$3:
    case GL_UNSIGNED_INT$3:
    case GL_FLOAT$3:
      var converted = pool.allocType(result.type, n);
      converted.set(data);
      result.data = converted;
      break

    case GL_HALF_FLOAT_OES$1:
      result.data = convertToHalfFloat(data);
      break

    default:
      check$1.raise('unsupported texture type, must specify a typed array');
  }
}

function preConvert (image, n) {
  return pool.allocType(
    image.type === GL_HALF_FLOAT_OES$1
      ? GL_FLOAT$3
      : image.type, n)
}

function postConvert (image, data) {
  if (image.type === GL_HALF_FLOAT_OES$1) {
    image.data = convertToHalfFloat(data);
    pool.freeType(data);
  } else {
    image.data = data;
  }
}

function transposeData (image, array, strideX, strideY, strideC, offset) {
  var w = image.width;
  var h = image.height;
  var c = image.channels;
  var n = w * h * c;
  var data = preConvert(image, n);

  var p = 0;
  for (var i = 0; i < h; ++i) {
    for (var j = 0; j < w; ++j) {
      for (var k = 0; k < c; ++k) {
        data[p++] = array[strideX * j + strideY * i + strideC * k + offset];
      }
    }
  }

  postConvert(image, data);
}

function getTextureSize (format, type, width, height, isMipmap, isCube) {
  var s;
  if (typeof FORMAT_SIZES_SPECIAL[format] !== 'undefined') {
    // we have a special array for dealing with weird color formats such as RGB5A1
    s = FORMAT_SIZES_SPECIAL[format];
  } else {
    s = FORMAT_CHANNELS[format] * TYPE_SIZES[type];
  }

  if (isCube) {
    s *= 6;
  }

  if (isMipmap) {
    // compute the total size of all the mipmaps.
    var total = 0;

    var w = width;
    while (w >= 1) {
      // we can only use mipmaps on a square image,
      // so we can simply use the width and ignore the height:
      total += s * w * w;
      w /= 2;
    }
    return total
  } else {
    return s * width * height
  }
}

function createTextureSet (
  gl, extensions, limits, reglPoll, contextState, stats, config) {
  // -------------------------------------------------------
  // Initialize constants and parameter tables here
  // -------------------------------------------------------
  var mipmapHint = {
    "don't care": GL_DONT_CARE,
    'dont care': GL_DONT_CARE,
    'nice': GL_NICEST,
    'fast': GL_FASTEST
  };

  var wrapModes = {
    'repeat': GL_REPEAT,
    'clamp': GL_CLAMP_TO_EDGE$1,
    'mirror': GL_MIRRORED_REPEAT
  };

  var magFilters = {
    'nearest': GL_NEAREST$1,
    'linear': GL_LINEAR
  };

  var minFilters = extend({
    'mipmap': GL_LINEAR_MIPMAP_LINEAR$1,
    'nearest mipmap nearest': GL_NEAREST_MIPMAP_NEAREST$1,
    'linear mipmap nearest': GL_LINEAR_MIPMAP_NEAREST$1,
    'nearest mipmap linear': GL_NEAREST_MIPMAP_LINEAR$1,
    'linear mipmap linear': GL_LINEAR_MIPMAP_LINEAR$1
  }, magFilters);

  var colorSpace = {
    'none': 0,
    'browser': GL_BROWSER_DEFAULT_WEBGL
  };

  var textureTypes = {
    'uint8': GL_UNSIGNED_BYTE$4,
    'rgba4': GL_UNSIGNED_SHORT_4_4_4_4$1,
    'rgb565': GL_UNSIGNED_SHORT_5_6_5$1,
    'rgb5 a1': GL_UNSIGNED_SHORT_5_5_5_1$1
  };

  var textureFormats = {
    'alpha': GL_ALPHA,
    'luminance': GL_LUMINANCE,
    'luminance alpha': GL_LUMINANCE_ALPHA,
    'rgb': GL_RGB,
    'rgba': GL_RGBA,
    'rgba4': GL_RGBA4,
    'rgb5 a1': GL_RGB5_A1,
    'rgb565': GL_RGB565
  };

  var compressedTextureFormats = {};

  if (extensions.ext_srgb) {
    textureFormats.srgb = GL_SRGB_EXT;
    textureFormats.srgba = GL_SRGB_ALPHA_EXT;
  }

  if (extensions.oes_texture_float) {
    textureTypes.float32 = textureTypes.float = GL_FLOAT$3;
  }

  if (extensions.oes_texture_half_float) {
    textureTypes['float16'] = textureTypes['half float'] = GL_HALF_FLOAT_OES$1;
  }

  if (extensions.webgl_depth_texture) {
    extend(textureFormats, {
      'depth': GL_DEPTH_COMPONENT,
      'depth stencil': GL_DEPTH_STENCIL
    });

    extend(textureTypes, {
      'uint16': GL_UNSIGNED_SHORT$3,
      'uint32': GL_UNSIGNED_INT$3,
      'depth stencil': GL_UNSIGNED_INT_24_8_WEBGL$1
    });
  }

  if (extensions.webgl_compressed_texture_s3tc) {
    extend(compressedTextureFormats, {
      'rgb s3tc dxt1': GL_COMPRESSED_RGB_S3TC_DXT1_EXT,
      'rgba s3tc dxt1': GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
      'rgba s3tc dxt3': GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
      'rgba s3tc dxt5': GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
    });
  }

  if (extensions.webgl_compressed_texture_atc) {
    extend(compressedTextureFormats, {
      'rgb atc': GL_COMPRESSED_RGB_ATC_WEBGL,
      'rgba atc explicit alpha': GL_COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL,
      'rgba atc interpolated alpha': GL_COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL
    });
  }

  if (extensions.webgl_compressed_texture_pvrtc) {
    extend(compressedTextureFormats, {
      'rgb pvrtc 4bppv1': GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG,
      'rgb pvrtc 2bppv1': GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG,
      'rgba pvrtc 4bppv1': GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG,
      'rgba pvrtc 2bppv1': GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG
    });
  }

  if (extensions.webgl_compressed_texture_etc1) {
    compressedTextureFormats['rgb etc1'] = GL_COMPRESSED_RGB_ETC1_WEBGL;
  }

  // Copy over all texture formats
  var supportedCompressedFormats = Array.prototype.slice.call(
    gl.getParameter(GL_COMPRESSED_TEXTURE_FORMATS));
  Object.keys(compressedTextureFormats).forEach(function (name) {
    var format = compressedTextureFormats[name];
    if (supportedCompressedFormats.indexOf(format) >= 0) {
      textureFormats[name] = format;
    }
  });

  var supportedFormats = Object.keys(textureFormats);
  limits.textureFormats = supportedFormats;

  // associate with every format string its
  // corresponding GL-value.
  var textureFormatsInvert = [];
  Object.keys(textureFormats).forEach(function (key) {
    var val = textureFormats[key];
    textureFormatsInvert[val] = key;
  });

  // associate with every type string its
  // corresponding GL-value.
  var textureTypesInvert = [];
  Object.keys(textureTypes).forEach(function (key) {
    var val = textureTypes[key];
    textureTypesInvert[val] = key;
  });

  var magFiltersInvert = [];
  Object.keys(magFilters).forEach(function (key) {
    var val = magFilters[key];
    magFiltersInvert[val] = key;
  });

  var minFiltersInvert = [];
  Object.keys(minFilters).forEach(function (key) {
    var val = minFilters[key];
    minFiltersInvert[val] = key;
  });

  var wrapModesInvert = [];
  Object.keys(wrapModes).forEach(function (key) {
    var val = wrapModes[key];
    wrapModesInvert[val] = key;
  });

  // colorFormats[] gives the format (channels) associated to an
  // internalformat
  var colorFormats = supportedFormats.reduce(function (color, key) {
    var glenum = textureFormats[key];
    if (glenum === GL_LUMINANCE ||
        glenum === GL_ALPHA ||
        glenum === GL_LUMINANCE ||
        glenum === GL_LUMINANCE_ALPHA ||
        glenum === GL_DEPTH_COMPONENT ||
        glenum === GL_DEPTH_STENCIL) {
      color[glenum] = glenum;
    } else if (glenum === GL_RGB5_A1 || key.indexOf('rgba') >= 0) {
      color[glenum] = GL_RGBA;
    } else {
      color[glenum] = GL_RGB;
    }
    return color
  }, {});

  function TexFlags () {
    // format info
    this.internalformat = GL_RGBA;
    this.format = GL_RGBA;
    this.type = GL_UNSIGNED_BYTE$4;
    this.compressed = false;

    // pixel storage
    this.premultiplyAlpha = false;
    this.flipY = false;
    this.unpackAlignment = 1;
    this.colorSpace = 0;

    // shape info
    this.width = 0;
    this.height = 0;
    this.channels = 0;
  }

  function copyFlags (result, other) {
    result.internalformat = other.internalformat;
    result.format = other.format;
    result.type = other.type;
    result.compressed = other.compressed;

    result.premultiplyAlpha = other.premultiplyAlpha;
    result.flipY = other.flipY;
    result.unpackAlignment = other.unpackAlignment;
    result.colorSpace = other.colorSpace;

    result.width = other.width;
    result.height = other.height;
    result.channels = other.channels;
  }

  function parseFlags (flags, options) {
    if (typeof options !== 'object' || !options) {
      return
    }

    if ('premultiplyAlpha' in options) {
      check$1.type(options.premultiplyAlpha, 'boolean',
        'invalid premultiplyAlpha');
      flags.premultiplyAlpha = options.premultiplyAlpha;
    }

    if ('flipY' in options) {
      check$1.type(options.flipY, 'boolean',
        'invalid texture flip');
      flags.flipY = options.flipY;
    }

    if ('alignment' in options) {
      check$1.oneOf(options.alignment, [1, 2, 4, 8],
        'invalid texture unpack alignment');
      flags.unpackAlignment = options.alignment;
    }

    if ('colorSpace' in options) {
      check$1.parameter(options.colorSpace, colorSpace,
        'invalid colorSpace');
      flags.colorSpace = colorSpace[options.colorSpace];
    }

    if ('type' in options) {
      var type = options.type;
      check$1(extensions.oes_texture_float ||
        !(type === 'float' || type === 'float32'),
        'you must enable the OES_texture_float extension in order to use floating point textures.');
      check$1(extensions.oes_texture_half_float ||
        !(type === 'half float' || type === 'float16'),
        'you must enable the OES_texture_half_float extension in order to use 16-bit floating point textures.');
      check$1(extensions.webgl_depth_texture ||
        !(type === 'uint16' || type === 'uint32' || type === 'depth stencil'),
        'you must enable the WEBGL_depth_texture extension in order to use depth/stencil textures.');
      check$1.parameter(type, textureTypes,
        'invalid texture type');
      flags.type = textureTypes[type];
    }

    var w = flags.width;
    var h = flags.height;
    var c = flags.channels;
    var hasChannels = false;
    if ('shape' in options) {
      check$1(Array.isArray(options.shape) && options.shape.length >= 2,
        'shape must be an array');
      w = options.shape[0];
      h = options.shape[1];
      if (options.shape.length === 3) {
        c = options.shape[2];
        check$1(c > 0 && c <= 4, 'invalid number of channels');
        hasChannels = true;
      }
      check$1(w >= 0 && w <= limits.maxTextureSize, 'invalid width');
      check$1(h >= 0 && h <= limits.maxTextureSize, 'invalid height');
    } else {
      if ('radius' in options) {
        w = h = options.radius;
        check$1(w >= 0 && w <= limits.maxTextureSize, 'invalid radius');
      }
      if ('width' in options) {
        w = options.width;
        check$1(w >= 0 && w <= limits.maxTextureSize, 'invalid width');
      }
      if ('height' in options) {
        h = options.height;
        check$1(h >= 0 && h <= limits.maxTextureSize, 'invalid height');
      }
      if ('channels' in options) {
        c = options.channels;
        check$1(c > 0 && c <= 4, 'invalid number of channels');
        hasChannels = true;
      }
    }
    flags.width = w | 0;
    flags.height = h | 0;
    flags.channels = c | 0;

    var hasFormat = false;
    if ('format' in options) {
      var formatStr = options.format;
      check$1(extensions.webgl_depth_texture ||
        !(formatStr === 'depth' || formatStr === 'depth stencil'),
        'you must enable the WEBGL_depth_texture extension in order to use depth/stencil textures.');
      check$1.parameter(formatStr, textureFormats,
        'invalid texture format');
      var internalformat = flags.internalformat = textureFormats[formatStr];
      flags.format = colorFormats[internalformat];
      if (formatStr in textureTypes) {
        if (!('type' in options)) {
          flags.type = textureTypes[formatStr];
        }
      }
      if (formatStr in compressedTextureFormats) {
        flags.compressed = true;
      }
      hasFormat = true;
    }

    // Reconcile channels and format
    if (!hasChannels && hasFormat) {
      flags.channels = FORMAT_CHANNELS[flags.format];
    } else if (hasChannels && !hasFormat) {
      if (flags.channels !== CHANNELS_FORMAT[flags.format]) {
        flags.format = flags.internalformat = CHANNELS_FORMAT[flags.channels];
      }
    } else if (hasFormat && hasChannels) {
      check$1(
        flags.channels === FORMAT_CHANNELS[flags.format],
        'number of channels inconsistent with specified format');
    }
  }

  function setFlags (flags) {
    gl.pixelStorei(GL_UNPACK_FLIP_Y_WEBGL, flags.flipY);
    gl.pixelStorei(GL_UNPACK_PREMULTIPLY_ALPHA_WEBGL, flags.premultiplyAlpha);
    gl.pixelStorei(GL_UNPACK_COLORSPACE_CONVERSION_WEBGL, flags.colorSpace);
    gl.pixelStorei(GL_UNPACK_ALIGNMENT, flags.unpackAlignment);
  }

  // -------------------------------------------------------
  // Tex image data
  // -------------------------------------------------------
  function TexImage () {
    TexFlags.call(this);

    this.xOffset = 0;
    this.yOffset = 0;

    // data
    this.data = null;
    this.needsFree = false;

    // html element
    this.element = null;

    // copyTexImage info
    this.needsCopy = false;
  }

  function parseImage (image, options) {
    var data = null;
    if (isPixelData(options)) {
      data = options;
    } else if (options) {
      check$1.type(options, 'object', 'invalid pixel data type');
      parseFlags(image, options);
      if ('x' in options) {
        image.xOffset = options.x | 0;
      }
      if ('y' in options) {
        image.yOffset = options.y | 0;
      }
      if (isPixelData(options.data)) {
        data = options.data;
      }
    }

    check$1(
      !image.compressed ||
      data instanceof Uint8Array,
      'compressed texture data must be stored in a uint8array');

    if (options.copy) {
      check$1(!data, 'can not specify copy and data field for the same texture');
      var viewW = contextState.viewportWidth;
      var viewH = contextState.viewportHeight;
      image.width = image.width || (viewW - image.xOffset);
      image.height = image.height || (viewH - image.yOffset);
      image.needsCopy = true;
      check$1(image.xOffset >= 0 && image.xOffset < viewW &&
            image.yOffset >= 0 && image.yOffset < viewH &&
            image.width > 0 && image.width <= viewW &&
            image.height > 0 && image.height <= viewH,
            'copy texture read out of bounds');
    } else if (!data) {
      image.width = image.width || 1;
      image.height = image.height || 1;
      image.channels = image.channels || 4;
    } else if (isTypedArray(data)) {
      image.channels = image.channels || 4;
      image.data = data;
      if (!('type' in options) && image.type === GL_UNSIGNED_BYTE$4) {
        image.type = typedArrayCode$1(data);
      }
    } else if (isNumericArray(data)) {
      image.channels = image.channels || 4;
      convertData(image, data);
      image.alignment = 1;
      image.needsFree = true;
    } else if (isNDArrayLike(data)) {
      var array = data.data;
      if (!Array.isArray(array) && image.type === GL_UNSIGNED_BYTE$4) {
        image.type = typedArrayCode$1(array);
      }
      var shape = data.shape;
      var stride = data.stride;
      var shapeX, shapeY, shapeC, strideX, strideY, strideC;
      if (shape.length === 3) {
        shapeC = shape[2];
        strideC = stride[2];
      } else {
        check$1(shape.length === 2, 'invalid ndarray pixel data, must be 2 or 3D');
        shapeC = 1;
        strideC = 1;
      }
      shapeX = shape[0];
      shapeY = shape[1];
      strideX = stride[0];
      strideY = stride[1];
      image.alignment = 1;
      image.width = shapeX;
      image.height = shapeY;
      image.channels = shapeC;
      image.format = image.internalformat = CHANNELS_FORMAT[shapeC];
      image.needsFree = true;
      transposeData(image, array, strideX, strideY, strideC, data.offset);
    } else if (isCanvasElement(data) || isContext2D(data)) {
      if (isCanvasElement(data)) {
        image.element = data;
      } else {
        image.element = data.canvas;
      }
      image.width = image.element.width;
      image.height = image.element.height;
      image.channels = 4;
    } else if (isImageElement(data)) {
      image.element = data;
      image.width = data.naturalWidth;
      image.height = data.naturalHeight;
      image.channels = 4;
    } else if (isVideoElement(data)) {
      image.element = data;
      image.width = data.videoWidth;
      image.height = data.videoHeight;
      image.channels = 4;
    } else if (isRectArray(data)) {
      var w = image.width || data[0].length;
      var h = image.height || data.length;
      var c = image.channels;
      if (isArrayLike(data[0][0])) {
        c = c || data[0][0].length;
      } else {
        c = c || 1;
      }
      var arrayShape = flattenUtils.shape(data);
      var n = 1;
      for (var dd = 0; dd < arrayShape.length; ++dd) {
        n *= arrayShape[dd];
      }
      var allocData = preConvert(image, n);
      flattenUtils.flatten(data, arrayShape, '', allocData);
      postConvert(image, allocData);
      image.alignment = 1;
      image.width = w;
      image.height = h;
      image.channels = c;
      image.format = image.internalformat = CHANNELS_FORMAT[c];
      image.needsFree = true;
    }

    if (image.type === GL_FLOAT$3) {
      check$1(limits.extensions.indexOf('oes_texture_float') >= 0,
        'oes_texture_float extension not enabled');
    } else if (image.type === GL_HALF_FLOAT_OES$1) {
      check$1(limits.extensions.indexOf('oes_texture_half_float') >= 0,
        'oes_texture_half_float extension not enabled');
    }

    // do compressed texture  validation here.
  }

  function setImage (info, target, miplevel) {
    var element = info.element;
    var data = info.data;
    var internalformat = info.internalformat;
    var format = info.format;
    var type = info.type;
    var width = info.width;
    var height = info.height;

    setFlags(info);

    if (element) {
      gl.texImage2D(target, miplevel, format, format, type, element);
    } else if (info.compressed) {
      gl.compressedTexImage2D(target, miplevel, internalformat, width, height, 0, data);
    } else if (info.needsCopy) {
      reglPoll();
      gl.copyTexImage2D(
        target, miplevel, format, info.xOffset, info.yOffset, width, height, 0);
    } else {
      gl.texImage2D(
        target, miplevel, format, width, height, 0, format, type, data);
    }
  }

  function setSubImage (info, target, x, y, miplevel) {
    var element = info.element;
    var data = info.data;
    var internalformat = info.internalformat;
    var format = info.format;
    var type = info.type;
    var width = info.width;
    var height = info.height;

    setFlags(info);

    if (element) {
      gl.texSubImage2D(
        target, miplevel, x, y, format, type, element);
    } else if (info.compressed) {
      gl.compressedTexSubImage2D(
        target, miplevel, x, y, internalformat, width, height, data);
    } else if (info.needsCopy) {
      reglPoll();
      gl.copyTexSubImage2D(
        target, miplevel, x, y, info.xOffset, info.yOffset, width, height);
    } else {
      gl.texSubImage2D(
        target, miplevel, x, y, width, height, format, type, data);
    }
  }

  // texImage pool
  var imagePool = [];

  function allocImage () {
    return imagePool.pop() || new TexImage()
  }

  function freeImage (image) {
    if (image.needsFree) {
      pool.freeType(image.data);
    }
    TexImage.call(image);
    imagePool.push(image);
  }

  // -------------------------------------------------------
  // Mip map
  // -------------------------------------------------------
  function MipMap () {
    TexFlags.call(this);

    this.genMipmaps = false;
    this.mipmapHint = GL_DONT_CARE;
    this.mipmask = 0;
    this.images = Array(16);
  }

  function parseMipMapFromShape (mipmap, width, height) {
    var img = mipmap.images[0] = allocImage();
    mipmap.mipmask = 1;
    img.width = mipmap.width = width;
    img.height = mipmap.height = height;
    img.channels = mipmap.channels = 4;
  }

  function parseMipMapFromObject (mipmap, options) {
    var imgData = null;
    if (isPixelData(options)) {
      imgData = mipmap.images[0] = allocImage();
      copyFlags(imgData, mipmap);
      parseImage(imgData, options);
      mipmap.mipmask = 1;
    } else {
      parseFlags(mipmap, options);
      if (Array.isArray(options.mipmap)) {
        var mipData = options.mipmap;
        for (var i = 0; i < mipData.length; ++i) {
          imgData = mipmap.images[i] = allocImage();
          copyFlags(imgData, mipmap);
          imgData.width >>= i;
          imgData.height >>= i;
          parseImage(imgData, mipData[i]);
          mipmap.mipmask |= (1 << i);
        }
      } else {
        imgData = mipmap.images[0] = allocImage();
        copyFlags(imgData, mipmap);
        parseImage(imgData, options);
        mipmap.mipmask = 1;
      }
    }
    copyFlags(mipmap, mipmap.images[0]);

    // For textures of the compressed format WEBGL_compressed_texture_s3tc
    // we must have that
    //
    // "When level equals zero width and height must be a multiple of 4.
    // When level is greater than 0 width and height must be 0, 1, 2 or a multiple of 4. "
    //
    // but we do not yet support having multiple mipmap levels for compressed textures,
    // so we only test for level zero.

    if (mipmap.compressed &&
        (mipmap.internalformat === GL_COMPRESSED_RGB_S3TC_DXT1_EXT) ||
        (mipmap.internalformat === GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) ||
        (mipmap.internalformat === GL_COMPRESSED_RGBA_S3TC_DXT3_EXT) ||
        (mipmap.internalformat === GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)) {
      check$1(mipmap.width % 4 === 0 &&
            mipmap.height % 4 === 0,
            'for compressed texture formats, mipmap level 0 must have width and height that are a multiple of 4');
    }
  }

  function setMipMap (mipmap, target) {
    var images = mipmap.images;
    for (var i = 0; i < images.length; ++i) {
      if (!images[i]) {
        return
      }
      setImage(images[i], target, i);
    }
  }

  var mipPool = [];

  function allocMipMap () {
    var result = mipPool.pop() || new MipMap();
    TexFlags.call(result);
    result.mipmask = 0;
    for (var i = 0; i < 16; ++i) {
      result.images[i] = null;
    }
    return result
  }

  function freeMipMap (mipmap) {
    var images = mipmap.images;
    for (var i = 0; i < images.length; ++i) {
      if (images[i]) {
        freeImage(images[i]);
      }
      images[i] = null;
    }
    mipPool.push(mipmap);
  }

  // -------------------------------------------------------
  // Tex info
  // -------------------------------------------------------
  function TexInfo () {
    this.minFilter = GL_NEAREST$1;
    this.magFilter = GL_NEAREST$1;

    this.wrapS = GL_CLAMP_TO_EDGE$1;
    this.wrapT = GL_CLAMP_TO_EDGE$1;

    this.anisotropic = 1;

    this.genMipmaps = false;
    this.mipmapHint = GL_DONT_CARE;
  }

  function parseTexInfo (info, options) {
    if ('min' in options) {
      var minFilter = options.min;
      check$1.parameter(minFilter, minFilters);
      info.minFilter = minFilters[minFilter];
      if (MIPMAP_FILTERS.indexOf(info.minFilter) >= 0) {
        info.genMipmaps = true;
      }
    }

    if ('mag' in options) {
      var magFilter = options.mag;
      check$1.parameter(magFilter, magFilters);
      info.magFilter = magFilters[magFilter];
    }

    var wrapS = info.wrapS;
    var wrapT = info.wrapT;
    if ('wrap' in options) {
      var wrap = options.wrap;
      if (typeof wrap === 'string') {
        check$1.parameter(wrap, wrapModes);
        wrapS = wrapT = wrapModes[wrap];
      } else if (Array.isArray(wrap)) {
        check$1.parameter(wrap[0], wrapModes);
        check$1.parameter(wrap[1], wrapModes);
        wrapS = wrapModes[wrap[0]];
        wrapT = wrapModes[wrap[1]];
      }
    } else {
      if ('wrapS' in options) {
        var optWrapS = options.wrapS;
        check$1.parameter(optWrapS, wrapModes);
        wrapS = wrapModes[optWrapS];
      }
      if ('wrapT' in options) {
        var optWrapT = options.wrapT;
        check$1.parameter(optWrapT, wrapModes);
        wrapT = wrapModes[optWrapT];
      }
    }
    info.wrapS = wrapS;
    info.wrapT = wrapT;

    if ('anisotropic' in options) {
      var anisotropic = options.anisotropic;
      check$1(typeof anisotropic === 'number' &&
         anisotropic >= 1 && anisotropic <= limits.maxAnisotropic,
        'aniso samples must be between 1 and ');
      info.anisotropic = options.anisotropic;
    }

    if ('mipmap' in options) {
      var hasMipMap = false;
      switch (typeof options.mipmap) {
        case 'string':
          check$1.parameter(options.mipmap, mipmapHint,
            'invalid mipmap hint');
          info.mipmapHint = mipmapHint[options.mipmap];
          info.genMipmaps = true;
          hasMipMap = true;
          break

        case 'boolean':
          hasMipMap = info.genMipmaps = options.mipmap;
          break

        case 'object':
          check$1(Array.isArray(options.mipmap), 'invalid mipmap type');
          info.genMipmaps = false;
          hasMipMap = true;
          break

        default:
          check$1.raise('invalid mipmap type');
      }
      if (hasMipMap && !('min' in options)) {
        info.minFilter = GL_NEAREST_MIPMAP_NEAREST$1;
      }
    }
  }

  function setTexInfo (info, target) {
    gl.texParameteri(target, GL_TEXTURE_MIN_FILTER, info.minFilter);
    gl.texParameteri(target, GL_TEXTURE_MAG_FILTER, info.magFilter);
    gl.texParameteri(target, GL_TEXTURE_WRAP_S, info.wrapS);
    gl.texParameteri(target, GL_TEXTURE_WRAP_T, info.wrapT);
    if (extensions.ext_texture_filter_anisotropic) {
      gl.texParameteri(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, info.anisotropic);
    }
    if (info.genMipmaps) {
      gl.hint(GL_GENERATE_MIPMAP_HINT, info.mipmapHint);
      gl.generateMipmap(target);
    }
  }

  // -------------------------------------------------------
  // Full texture object
  // -------------------------------------------------------
  var textureCount = 0;
  var textureSet = {};
  var numTexUnits = limits.maxTextureUnits;
  var textureUnits = Array(numTexUnits).map(function () {
    return null
  });

  function REGLTexture (target) {
    TexFlags.call(this);
    this.mipmask = 0;
    this.internalformat = GL_RGBA;

    this.id = textureCount++;

    this.refCount = 1;

    this.target = target;
    this.texture = gl.createTexture();

    this.unit = -1;
    this.bindCount = 0;

    this.texInfo = new TexInfo();

    if (config.profile) {
      this.stats = {size: 0};
    }
  }

  function tempBind (texture) {
    gl.activeTexture(GL_TEXTURE0);
    gl.bindTexture(texture.target, texture.texture);
  }

  function tempRestore () {
    var prev = textureUnits[0];
    if (prev) {
      gl.bindTexture(prev.target, prev.texture);
    } else {
      gl.bindTexture(GL_TEXTURE_2D, null);
    }
  }

  function destroy (texture) {
    var handle = texture.texture;
    check$1(handle, 'must not double destroy texture');
    var unit = texture.unit;
    var target = texture.target;
    if (unit >= 0) {
      gl.activeTexture(GL_TEXTURE0 + unit);
      gl.bindTexture(target, null);
      textureUnits[unit] = null;
    }
    gl.deleteTexture(handle);
    texture.texture = null;
    texture.params = null;
    texture.pixels = null;
    texture.refCount = 0;
    delete textureSet[texture.id];
    stats.textureCount--;
  }

  extend(REGLTexture.prototype, {
    bind: function () {
      var texture = this;
      texture.bindCount += 1;
      var unit = texture.unit;
      if (unit < 0) {
        for (var i = 0; i < numTexUnits; ++i) {
          var other = textureUnits[i];
          if (other) {
            if (other.bindCount > 0) {
              continue
            }
            other.unit = -1;
          }
          textureUnits[i] = texture;
          unit = i;
          break
        }
        if (unit >= numTexUnits) {
          check$1.raise('insufficient number of texture units');
        }
        if (config.profile && stats.maxTextureUnits < (unit + 1)) {
          stats.maxTextureUnits = unit + 1; // +1, since the units are zero-based
        }
        texture.unit = unit;
        gl.activeTexture(GL_TEXTURE0 + unit);
        gl.bindTexture(texture.target, texture.texture);
      }
      return unit
    },

    unbind: function () {
      this.bindCount -= 1;
    },

    decRef: function () {
      if (--this.refCount <= 0) {
        destroy(this);
      }
    }
  });

  function createTexture2D (a, b) {
    var texture = new REGLTexture(GL_TEXTURE_2D);
    textureSet[texture.id] = texture;
    stats.textureCount++;

    function reglTexture2D (a, b) {
      var texInfo = texture.texInfo;
      TexInfo.call(texInfo);
      var mipData = allocMipMap();

      if (typeof a === 'number') {
        if (typeof b === 'number') {
          parseMipMapFromShape(mipData, a | 0, b | 0);
        } else {
          parseMipMapFromShape(mipData, a | 0, a | 0);
        }
      } else if (a) {
        check$1.type(a, 'object', 'invalid arguments to regl.texture');
        parseTexInfo(texInfo, a);
        parseMipMapFromObject(mipData, a);
      } else {
        // empty textures get assigned a default shape of 1x1
        parseMipMapFromShape(mipData, 1, 1);
      }

      if (texInfo.genMipmaps) {
        mipData.mipmask = (mipData.width << 1) - 1;
      }
      texture.mipmask = mipData.mipmask;

      copyFlags(texture, mipData);

      check$1.texture2D(texInfo, mipData, limits);
      texture.internalformat = mipData.internalformat;

      reglTexture2D.width = mipData.width;
      reglTexture2D.height = mipData.height;

      tempBind(texture);
      setMipMap(mipData, GL_TEXTURE_2D);
      setTexInfo(texInfo, GL_TEXTURE_2D);
      tempRestore();

      freeMipMap(mipData);

      if (config.profile) {
        texture.stats.size = getTextureSize(
          texture.internalformat,
          texture.type,
          mipData.width,
          mipData.height,
          texInfo.genMipmaps,
          false);
      }
      reglTexture2D.format = textureFormatsInvert[texture.internalformat];
      reglTexture2D.type = textureTypesInvert[texture.type];

      reglTexture2D.mag = magFiltersInvert[texInfo.magFilter];
      reglTexture2D.min = minFiltersInvert[texInfo.minFilter];

      reglTexture2D.wrapS = wrapModesInvert[texInfo.wrapS];
      reglTexture2D.wrapT = wrapModesInvert[texInfo.wrapT];

      return reglTexture2D
    }

    function subimage (image, x_, y_, level_) {
      check$1(!!image, 'must specify image data');

      var x = x_ | 0;
      var y = y_ | 0;
      var level = level_ | 0;

      var imageData = allocImage();
      copyFlags(imageData, texture);
      imageData.width = 0;
      imageData.height = 0;
      parseImage(imageData, image);
      imageData.width = imageData.width || ((texture.width >> level) - x);
      imageData.height = imageData.height || ((texture.height >> level) - y);

      check$1(
        texture.type === imageData.type &&
        texture.format === imageData.format &&
        texture.internalformat === imageData.internalformat,
        'incompatible format for texture.subimage');
      check$1(
        x >= 0 && y >= 0 &&
        x + imageData.width <= texture.width &&
        y + imageData.height <= texture.height,
        'texture.subimage write out of bounds');
      check$1(
        texture.mipmask & (1 << level),
        'missing mipmap data');
      check$1(
        imageData.data || imageData.element || imageData.needsCopy,
        'missing image data');

      tempBind(texture);
      setSubImage(imageData, GL_TEXTURE_2D, x, y, level);
      tempRestore();

      freeImage(imageData);

      return reglTexture2D
    }

    function resize (w_, h_) {
      var w = w_ | 0;
      var h = (h_ | 0) || w;
      if (w === texture.width && h === texture.height) {
        return reglTexture2D
      }

      reglTexture2D.width = texture.width = w;
      reglTexture2D.height = texture.height = h;

      tempBind(texture);
      for (var i = 0; texture.mipmask >> i; ++i) {
        gl.texImage2D(
          GL_TEXTURE_2D,
          i,
          texture.format,
          w >> i,
          h >> i,
          0,
          texture.format,
          texture.type,
          null);
      }
      tempRestore();

      // also, recompute the texture size.
      if (config.profile) {
        texture.stats.size = getTextureSize(
          texture.internalformat,
          texture.type,
          w,
          h,
          false,
          false);
      }

      return reglTexture2D
    }

    reglTexture2D(a, b);

    reglTexture2D.subimage = subimage;
    reglTexture2D.resize = resize;
    reglTexture2D._reglType = 'texture2d';
    reglTexture2D._texture = texture;
    if (config.profile) {
      reglTexture2D.stats = texture.stats;
    }
    reglTexture2D.destroy = function () {
      texture.decRef();
    };

    return reglTexture2D
  }

  function createTextureCube (a0, a1, a2, a3, a4, a5) {
    var texture = new REGLTexture(GL_TEXTURE_CUBE_MAP);
    textureSet[texture.id] = texture;
    stats.cubeCount++;

    var faces = new Array(6);

    function reglTextureCube (a0, a1, a2, a3, a4, a5) {
      var i;
      var texInfo = texture.texInfo;
      TexInfo.call(texInfo);
      for (i = 0; i < 6; ++i) {
        faces[i] = allocMipMap();
      }

      if (typeof a0 === 'number' || !a0) {
        var s = (a0 | 0) || 1;
        for (i = 0; i < 6; ++i) {
          parseMipMapFromShape(faces[i], s, s);
        }
      } else if (typeof a0 === 'object') {
        if (a1) {
          parseMipMapFromObject(faces[0], a0);
          parseMipMapFromObject(faces[1], a1);
          parseMipMapFromObject(faces[2], a2);
          parseMipMapFromObject(faces[3], a3);
          parseMipMapFromObject(faces[4], a4);
          parseMipMapFromObject(faces[5], a5);
        } else {
          parseTexInfo(texInfo, a0);
          parseFlags(texture, a0);
          if ('faces' in a0) {
            var face_input = a0.faces;
            check$1(Array.isArray(face_input) && face_input.length === 6,
              'cube faces must be a length 6 array');
            for (i = 0; i < 6; ++i) {
              check$1(typeof face_input[i] === 'object' && !!face_input[i],
                'invalid input for cube map face');
              copyFlags(faces[i], texture);
              parseMipMapFromObject(faces[i], face_input[i]);
            }
          } else {
            for (i = 0; i < 6; ++i) {
              parseMipMapFromObject(faces[i], a0);
            }
          }
        }
      } else {
        check$1.raise('invalid arguments to cube map');
      }

      copyFlags(texture, faces[0]);
      if (texInfo.genMipmaps) {
        texture.mipmask = (faces[0].width << 1) - 1;
      } else {
        texture.mipmask = faces[0].mipmask;
      }

      check$1.textureCube(texture, texInfo, faces, limits);
      texture.internalformat = faces[0].internalformat;

      reglTextureCube.width = faces[0].width;
      reglTextureCube.height = faces[0].height;

      tempBind(texture);
      for (i = 0; i < 6; ++i) {
        setMipMap(faces[i], GL_TEXTURE_CUBE_MAP_POSITIVE_X + i);
      }
      setTexInfo(texInfo, GL_TEXTURE_CUBE_MAP);
      tempRestore();

      if (config.profile) {
        texture.stats.size = getTextureSize(
          texture.internalformat,
          texture.type,
          reglTextureCube.width,
          reglTextureCube.height,
          texInfo.genMipmaps,
          true);
      }

      reglTextureCube.format = textureFormatsInvert[texture.internalformat];
      reglTextureCube.type = textureTypesInvert[texture.type];

      reglTextureCube.mag = magFiltersInvert[texInfo.magFilter];
      reglTextureCube.min = minFiltersInvert[texInfo.minFilter];

      reglTextureCube.wrapS = wrapModesInvert[texInfo.wrapS];
      reglTextureCube.wrapT = wrapModesInvert[texInfo.wrapT];

      for (i = 0; i < 6; ++i) {
        freeMipMap(faces[i]);
      }

      return reglTextureCube
    }

    function subimage (face, image, x_, y_, level_) {
      check$1(!!image, 'must specify image data');
      check$1(typeof face === 'number' && face === (face | 0) &&
        face >= 0 && face < 6, 'invalid face');

      var x = x_ | 0;
      var y = y_ | 0;
      var level = level_ | 0;

      var imageData = allocImage();
      copyFlags(imageData, texture);
      imageData.width = 0;
      imageData.height = 0;
      parseImage(imageData, image);
      imageData.width = imageData.width || ((texture.width >> level) - x);
      imageData.height = imageData.height || ((texture.height >> level) - y);

      check$1(
        texture.type === imageData.type &&
        texture.format === imageData.format &&
        texture.internalformat === imageData.internalformat,
        'incompatible format for texture.subimage');
      check$1(
        x >= 0 && y >= 0 &&
        x + imageData.width <= texture.width &&
        y + imageData.height <= texture.height,
        'texture.subimage write out of bounds');
      check$1(
        texture.mipmask & (1 << level),
        'missing mipmap data');
      check$1(
        imageData.data || imageData.element || imageData.needsCopy,
        'missing image data');

      tempBind(texture);
      setSubImage(imageData, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, x, y, level);
      tempRestore();

      freeImage(imageData);

      return reglTextureCube
    }

    function resize (radius_) {
      var radius = radius_ | 0;
      if (radius === texture.width) {
        return
      }

      reglTextureCube.width = texture.width = radius;
      reglTextureCube.height = texture.height = radius;

      tempBind(texture);
      for (var i = 0; i < 6; ++i) {
        for (var j = 0; texture.mipmask >> j; ++j) {
          gl.texImage2D(
            GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
            j,
            texture.format,
            radius >> j,
            radius >> j,
            0,
            texture.format,
            texture.type,
            null);
        }
      }
      tempRestore();

      if (config.profile) {
        texture.stats.size = getTextureSize(
          texture.internalformat,
          texture.type,
          reglTextureCube.width,
          reglTextureCube.height,
          false,
          true);
      }

      return reglTextureCube
    }

    reglTextureCube(a0, a1, a2, a3, a4, a5);

    reglTextureCube.subimage = subimage;
    reglTextureCube.resize = resize;
    reglTextureCube._reglType = 'textureCube';
    reglTextureCube._texture = texture;
    if (config.profile) {
      reglTextureCube.stats = texture.stats;
    }
    reglTextureCube.destroy = function () {
      texture.decRef();
    };

    return reglTextureCube
  }

  // Called when regl is destroyed
  function destroyTextures () {
    for (var i = 0; i < numTexUnits; ++i) {
      gl.activeTexture(GL_TEXTURE0 + i);
      gl.bindTexture(GL_TEXTURE_2D, null);
      textureUnits[i] = null;
    }
    values(textureSet).forEach(destroy);

    stats.cubeCount = 0;
    stats.textureCount = 0;
  }

  if (config.profile) {
    stats.getTotalTextureSize = function () {
      var total = 0;
      Object.keys(textureSet).forEach(function (key) {
        total += textureSet[key].stats.size;
      });
      return total
    };
  }

  function restoreTextures () {
    values(textureSet).forEach(function (texture) {
      texture.texture = gl.createTexture();
      gl.bindTexture(texture.target, texture.texture);
      for (var i = 0; i < 32; ++i) {
        if ((texture.mipmask & (1 << i)) === 0) {
          continue
        }
        if (texture.target === GL_TEXTURE_2D) {
          gl.texImage2D(GL_TEXTURE_2D,
            i,
            texture.internalformat,
            texture.width >> i,
            texture.height >> i,
            0,
            texture.internalformat,
            texture.type,
            null);
        } else {
          for (var j = 0; j < 6; ++j) {
            gl.texImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + j,
              i,
              texture.internalformat,
              texture.width >> i,
              texture.height >> i,
              0,
              texture.internalformat,
              texture.type,
              null);
          }
        }
      }
      setTexInfo(texture.texInfo, texture.target);
    });
  }

  return {
    create2D: createTexture2D,
    createCube: createTextureCube,
    clear: destroyTextures,
    getTexture: function (wrapper) {
      return null
    },
    restore: restoreTextures
  }
}

var GL_RENDERBUFFER = 0x8D41;

var GL_RGBA4$1 = 0x8056;
var GL_RGB5_A1$1 = 0x8057;
var GL_RGB565$1 = 0x8D62;
var GL_DEPTH_COMPONENT16 = 0x81A5;
var GL_STENCIL_INDEX8 = 0x8D48;
var GL_DEPTH_STENCIL$1 = 0x84F9;

var GL_SRGB8_ALPHA8_EXT = 0x8C43;

var GL_RGBA32F_EXT = 0x8814;

var GL_RGBA16F_EXT = 0x881A;
var GL_RGB16F_EXT = 0x881B;

var FORMAT_SIZES = [];

FORMAT_SIZES[GL_RGBA4$1] = 2;
FORMAT_SIZES[GL_RGB5_A1$1] = 2;
FORMAT_SIZES[GL_RGB565$1] = 2;

FORMAT_SIZES[GL_DEPTH_COMPONENT16] = 2;
FORMAT_SIZES[GL_STENCIL_INDEX8] = 1;
FORMAT_SIZES[GL_DEPTH_STENCIL$1] = 4;

FORMAT_SIZES[GL_SRGB8_ALPHA8_EXT] = 4;
FORMAT_SIZES[GL_RGBA32F_EXT] = 16;
FORMAT_SIZES[GL_RGBA16F_EXT] = 8;
FORMAT_SIZES[GL_RGB16F_EXT] = 6;

function getRenderbufferSize (format, width, height) {
  return FORMAT_SIZES[format] * width * height
}

var wrapRenderbuffers = function (gl, extensions, limits, stats, config) {
  var formatTypes = {
    'rgba4': GL_RGBA4$1,
    'rgb565': GL_RGB565$1,
    'rgb5 a1': GL_RGB5_A1$1,
    'depth': GL_DEPTH_COMPONENT16,
    'stencil': GL_STENCIL_INDEX8,
    'depth stencil': GL_DEPTH_STENCIL$1
  };

  if (extensions.ext_srgb) {
    formatTypes['srgba'] = GL_SRGB8_ALPHA8_EXT;
  }

  if (extensions.ext_color_buffer_half_float) {
    formatTypes['rgba16f'] = GL_RGBA16F_EXT;
    formatTypes['rgb16f'] = GL_RGB16F_EXT;
  }

  if (extensions.webgl_color_buffer_float) {
    formatTypes['rgba32f'] = GL_RGBA32F_EXT;
  }

  var formatTypesInvert = [];
  Object.keys(formatTypes).forEach(function (key) {
    var val = formatTypes[key];
    formatTypesInvert[val] = key;
  });

  var renderbufferCount = 0;
  var renderbufferSet = {};

  function REGLRenderbuffer (renderbuffer) {
    this.id = renderbufferCount++;
    this.refCount = 1;

    this.renderbuffer = renderbuffer;

    this.format = GL_RGBA4$1;
    this.width = 0;
    this.height = 0;

    if (config.profile) {
      this.stats = {size: 0};
    }
  }

  REGLRenderbuffer.prototype.decRef = function () {
    if (--this.refCount <= 0) {
      destroy(this);
    }
  };

  function destroy (rb) {
    var handle = rb.renderbuffer;
    check$1(handle, 'must not double destroy renderbuffer');
    gl.bindRenderbuffer(GL_RENDERBUFFER, null);
    gl.deleteRenderbuffer(handle);
    rb.renderbuffer = null;
    rb.refCount = 0;
    delete renderbufferSet[rb.id];
    stats.renderbufferCount--;
  }

  function createRenderbuffer (a, b) {
    var renderbuffer = new REGLRenderbuffer(gl.createRenderbuffer());
    renderbufferSet[renderbuffer.id] = renderbuffer;
    stats.renderbufferCount++;

    function reglRenderbuffer (a, b) {
      var w = 0;
      var h = 0;
      var format = GL_RGBA4$1;

      if (typeof a === 'object' && a) {
        var options = a;
        if ('shape' in options) {
          var shape = options.shape;
          check$1(Array.isArray(shape) && shape.length >= 2,
            'invalid renderbuffer shape');
          w = shape[0] | 0;
          h = shape[1] | 0;
        } else {
          if ('radius' in options) {
            w = h = options.radius | 0;
          }
          if ('width' in options) {
            w = options.width | 0;
          }
          if ('height' in options) {
            h = options.height | 0;
          }
        }
        if ('format' in options) {
          check$1.parameter(options.format, formatTypes,
            'invalid renderbuffer format');
          format = formatTypes[options.format];
        }
      } else if (typeof a === 'number') {
        w = a | 0;
        if (typeof b === 'number') {
          h = b | 0;
        } else {
          h = w;
        }
      } else if (!a) {
        w = h = 1;
      } else {
        check$1.raise('invalid arguments to renderbuffer constructor');
      }

      // check shape
      check$1(
        w > 0 && h > 0 &&
        w <= limits.maxRenderbufferSize && h <= limits.maxRenderbufferSize,
        'invalid renderbuffer size');

      if (w === renderbuffer.width &&
          h === renderbuffer.height &&
          format === renderbuffer.format) {
        return
      }

      reglRenderbuffer.width = renderbuffer.width = w;
      reglRenderbuffer.height = renderbuffer.height = h;
      renderbuffer.format = format;

      gl.bindRenderbuffer(GL_RENDERBUFFER, renderbuffer.renderbuffer);
      gl.renderbufferStorage(GL_RENDERBUFFER, format, w, h);

      if (config.profile) {
        renderbuffer.stats.size = getRenderbufferSize(renderbuffer.format, renderbuffer.width, renderbuffer.height);
      }
      reglRenderbuffer.format = formatTypesInvert[renderbuffer.format];

      return reglRenderbuffer
    }

    function resize (w_, h_) {
      var w = w_ | 0;
      var h = (h_ | 0) || w;

      if (w === renderbuffer.width && h === renderbuffer.height) {
        return reglRenderbuffer
      }

      // check shape
      check$1(
        w > 0 && h > 0 &&
        w <= limits.maxRenderbufferSize && h <= limits.maxRenderbufferSize,
        'invalid renderbuffer size');

      reglRenderbuffer.width = renderbuffer.width = w;
      reglRenderbuffer.height = renderbuffer.height = h;

      gl.bindRenderbuffer(GL_RENDERBUFFER, renderbuffer.renderbuffer);
      gl.renderbufferStorage(GL_RENDERBUFFER, renderbuffer.format, w, h);

      // also, recompute size.
      if (config.profile) {
        renderbuffer.stats.size = getRenderbufferSize(
          renderbuffer.format, renderbuffer.width, renderbuffer.height);
      }

      return reglRenderbuffer
    }

    reglRenderbuffer(a, b);

    reglRenderbuffer.resize = resize;
    reglRenderbuffer._reglType = 'renderbuffer';
    reglRenderbuffer._renderbuffer = renderbuffer;
    if (config.profile) {
      reglRenderbuffer.stats = renderbuffer.stats;
    }
    reglRenderbuffer.destroy = function () {
      renderbuffer.decRef();
    };

    return reglRenderbuffer
  }

  if (config.profile) {
    stats.getTotalRenderbufferSize = function () {
      var total = 0;
      Object.keys(renderbufferSet).forEach(function (key) {
        total += renderbufferSet[key].stats.size;
      });
      return total
    };
  }

  function restoreRenderbuffers () {
    values(renderbufferSet).forEach(function (rb) {
      rb.renderbuffer = gl.createRenderbuffer();
      gl.bindRenderbuffer(GL_RENDERBUFFER, rb.renderbuffer);
      gl.renderbufferStorage(GL_RENDERBUFFER, rb.format, rb.width, rb.height);
    });
    gl.bindRenderbuffer(GL_RENDERBUFFER, null);
  }

  return {
    create: createRenderbuffer,
    clear: function () {
      values(renderbufferSet).forEach(destroy);
    },
    restore: restoreRenderbuffers
  }
};

// We store these constants so that the minifier can inline them
var GL_FRAMEBUFFER = 0x8D40;
var GL_RENDERBUFFER$1 = 0x8D41;

var GL_TEXTURE_2D$1 = 0x0DE1;
var GL_TEXTURE_CUBE_MAP_POSITIVE_X$1 = 0x8515;

var GL_COLOR_ATTACHMENT0 = 0x8CE0;
var GL_DEPTH_ATTACHMENT = 0x8D00;
var GL_STENCIL_ATTACHMENT = 0x8D20;
var GL_DEPTH_STENCIL_ATTACHMENT = 0x821A;

var GL_FRAMEBUFFER_COMPLETE = 0x8CD5;
var GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6;
var GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7;
var GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS = 0x8CD9;
var GL_FRAMEBUFFER_UNSUPPORTED = 0x8CDD;

var GL_HALF_FLOAT_OES$2 = 0x8D61;
var GL_UNSIGNED_BYTE$5 = 0x1401;
var GL_FLOAT$4 = 0x1406;

var GL_RGBA$1 = 0x1908;

var GL_DEPTH_COMPONENT$1 = 0x1902;

var colorTextureFormatEnums = [
  GL_RGBA$1
];

// for every texture format, store
// the number of channels
var textureFormatChannels = [];
textureFormatChannels[GL_RGBA$1] = 4;

// for every texture type, store
// the size in bytes.
var textureTypeSizes = [];
textureTypeSizes[GL_UNSIGNED_BYTE$5] = 1;
textureTypeSizes[GL_FLOAT$4] = 4;
textureTypeSizes[GL_HALF_FLOAT_OES$2] = 2;

var GL_RGBA4$2 = 0x8056;
var GL_RGB5_A1$2 = 0x8057;
var GL_RGB565$2 = 0x8D62;
var GL_DEPTH_COMPONENT16$1 = 0x81A5;
var GL_STENCIL_INDEX8$1 = 0x8D48;
var GL_DEPTH_STENCIL$2 = 0x84F9;

var GL_SRGB8_ALPHA8_EXT$1 = 0x8C43;

var GL_RGBA32F_EXT$1 = 0x8814;

var GL_RGBA16F_EXT$1 = 0x881A;
var GL_RGB16F_EXT$1 = 0x881B;

var colorRenderbufferFormatEnums = [
  GL_RGBA4$2,
  GL_RGB5_A1$2,
  GL_RGB565$2,
  GL_SRGB8_ALPHA8_EXT$1,
  GL_RGBA16F_EXT$1,
  GL_RGB16F_EXT$1,
  GL_RGBA32F_EXT$1
];

var statusCode = {};
statusCode[GL_FRAMEBUFFER_COMPLETE] = 'complete';
statusCode[GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT] = 'incomplete attachment';
statusCode[GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS] = 'incomplete dimensions';
statusCode[GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT] = 'incomplete, missing attachment';
statusCode[GL_FRAMEBUFFER_UNSUPPORTED] = 'unsupported';

function wrapFBOState (
  gl,
  extensions,
  limits,
  textureState,
  renderbufferState,
  stats) {
  var framebufferState = {
    cur: null,
    next: null,
    dirty: false,
    setFBO: null
  };

  var colorTextureFormats = ['rgba'];
  var colorRenderbufferFormats = ['rgba4', 'rgb565', 'rgb5 a1'];

  if (extensions.ext_srgb) {
    colorRenderbufferFormats.push('srgba');
  }

  if (extensions.ext_color_buffer_half_float) {
    colorRenderbufferFormats.push('rgba16f', 'rgb16f');
  }

  if (extensions.webgl_color_buffer_float) {
    colorRenderbufferFormats.push('rgba32f');
  }

  var colorTypes = ['uint8'];
  if (extensions.oes_texture_half_float) {
    colorTypes.push('half float', 'float16');
  }
  if (extensions.oes_texture_float) {
    colorTypes.push('float', 'float32');
  }

  function FramebufferAttachment (target, texture, renderbuffer) {
    this.target = target;
    this.texture = texture;
    this.renderbuffer = renderbuffer;

    var w = 0;
    var h = 0;
    if (texture) {
      w = texture.width;
      h = texture.height;
    } else if (renderbuffer) {
      w = renderbuffer.width;
      h = renderbuffer.height;
    }
    this.width = w;
    this.height = h;
  }

  function decRef (attachment) {
    if (attachment) {
      if (attachment.texture) {
        attachment.texture._texture.decRef();
      }
      if (attachment.renderbuffer) {
        attachment.renderbuffer._renderbuffer.decRef();
      }
    }
  }

  function incRefAndCheckShape (attachment, width, height) {
    if (!attachment) {
      return
    }
    if (attachment.texture) {
      var texture = attachment.texture._texture;
      var tw = Math.max(1, texture.width);
      var th = Math.max(1, texture.height);
      check$1(tw === width && th === height,
        'inconsistent width/height for supplied texture');
      texture.refCount += 1;
    } else {
      var renderbuffer = attachment.renderbuffer._renderbuffer;
      check$1(
        renderbuffer.width === width && renderbuffer.height === height,
        'inconsistent width/height for renderbuffer');
      renderbuffer.refCount += 1;
    }
  }

  function attach (location, attachment) {
    if (attachment) {
      if (attachment.texture) {
        gl.framebufferTexture2D(
          GL_FRAMEBUFFER,
          location,
          attachment.target,
          attachment.texture._texture.texture,
          0);
      } else {
        gl.framebufferRenderbuffer(
          GL_FRAMEBUFFER,
          location,
          GL_RENDERBUFFER$1,
          attachment.renderbuffer._renderbuffer.renderbuffer);
      }
    }
  }

  function parseAttachment (attachment) {
    var target = GL_TEXTURE_2D$1;
    var texture = null;
    var renderbuffer = null;

    var data = attachment;
    if (typeof attachment === 'object') {
      data = attachment.data;
      if ('target' in attachment) {
        target = attachment.target | 0;
      }
    }

    check$1.type(data, 'function', 'invalid attachment data');

    var type = data._reglType;
    if (type === 'texture2d') {
      texture = data;
      check$1(target === GL_TEXTURE_2D$1);
    } else if (type === 'textureCube') {
      texture = data;
      check$1(
        target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X$1 &&
        target < GL_TEXTURE_CUBE_MAP_POSITIVE_X$1 + 6,
        'invalid cube map target');
    } else if (type === 'renderbuffer') {
      renderbuffer = data;
      target = GL_RENDERBUFFER$1;
    } else {
      check$1.raise('invalid regl object for attachment');
    }

    return new FramebufferAttachment(target, texture, renderbuffer)
  }

  function allocAttachment (
    width,
    height,
    isTexture,
    format,
    type) {
    if (isTexture) {
      var texture = textureState.create2D({
        width: width,
        height: height,
        format: format,
        type: type
      });
      texture._texture.refCount = 0;
      return new FramebufferAttachment(GL_TEXTURE_2D$1, texture, null)
    } else {
      var rb = renderbufferState.create({
        width: width,
        height: height,
        format: format
      });
      rb._renderbuffer.refCount = 0;
      return new FramebufferAttachment(GL_RENDERBUFFER$1, null, rb)
    }
  }

  function unwrapAttachment (attachment) {
    return attachment && (attachment.texture || attachment.renderbuffer)
  }

  function resizeAttachment (attachment, w, h) {
    if (attachment) {
      if (attachment.texture) {
        attachment.texture.resize(w, h);
      } else if (attachment.renderbuffer) {
        attachment.renderbuffer.resize(w, h);
      }
    }
  }

  var framebufferCount = 0;
  var framebufferSet = {};

  function REGLFramebuffer () {
    this.id = framebufferCount++;
    framebufferSet[this.id] = this;

    this.framebuffer = gl.createFramebuffer();
    this.width = 0;
    this.height = 0;

    this.colorAttachments = [];
    this.depthAttachment = null;
    this.stencilAttachment = null;
    this.depthStencilAttachment = null;
  }

  function decFBORefs (framebuffer) {
    framebuffer.colorAttachments.forEach(decRef);
    decRef(framebuffer.depthAttachment);
    decRef(framebuffer.stencilAttachment);
    decRef(framebuffer.depthStencilAttachment);
  }

  function destroy (framebuffer) {
    var handle = framebuffer.framebuffer;
    check$1(handle, 'must not double destroy framebuffer');
    gl.deleteFramebuffer(handle);
    framebuffer.framebuffer = null;
    stats.framebufferCount--;
    delete framebufferSet[framebuffer.id];
  }

  function updateFramebuffer (framebuffer) {
    var i;

    gl.bindFramebuffer(GL_FRAMEBUFFER, framebuffer.framebuffer);
    var colorAttachments = framebuffer.colorAttachments;
    for (i = 0; i < colorAttachments.length; ++i) {
      attach(GL_COLOR_ATTACHMENT0 + i, colorAttachments[i]);
    }
    for (i = colorAttachments.length; i < limits.maxColorAttachments; ++i) {
      gl.framebufferTexture2D(
        GL_FRAMEBUFFER,
        GL_COLOR_ATTACHMENT0 + i,
        GL_TEXTURE_2D$1,
        null,
        0);
    }

    gl.framebufferTexture2D(
      GL_FRAMEBUFFER,
      GL_DEPTH_STENCIL_ATTACHMENT,
      GL_TEXTURE_2D$1,
      null,
      0);
    gl.framebufferTexture2D(
      GL_FRAMEBUFFER,
      GL_DEPTH_ATTACHMENT,
      GL_TEXTURE_2D$1,
      null,
      0);
    gl.framebufferTexture2D(
      GL_FRAMEBUFFER,
      GL_STENCIL_ATTACHMENT,
      GL_TEXTURE_2D$1,
      null,
      0);

    attach(GL_DEPTH_ATTACHMENT, framebuffer.depthAttachment);
    attach(GL_STENCIL_ATTACHMENT, framebuffer.stencilAttachment);
    attach(GL_DEPTH_STENCIL_ATTACHMENT, framebuffer.depthStencilAttachment);

    // Check status code
    var status = gl.checkFramebufferStatus(GL_FRAMEBUFFER);
    if (status !== GL_FRAMEBUFFER_COMPLETE) {
      check$1.raise('framebuffer configuration not supported, status = ' +
        statusCode[status]);
    }

    gl.bindFramebuffer(GL_FRAMEBUFFER, framebufferState.next);
    framebufferState.cur = framebufferState.next;

    // FIXME: Clear error code here.  This is a work around for a bug in
    // headless-gl
    gl.getError();
  }

  function createFBO (a0, a1) {
    var framebuffer = new REGLFramebuffer();
    stats.framebufferCount++;

    function reglFramebuffer (a, b) {
      var i;

      check$1(framebufferState.next !== framebuffer,
        'can not update framebuffer which is currently in use');

      var extDrawBuffers = extensions.webgl_draw_buffers;

      var width = 0;
      var height = 0;

      var needsDepth = true;
      var needsStencil = true;

      var colorBuffer = null;
      var colorTexture = true;
      var colorFormat = 'rgba';
      var colorType = 'uint8';
      var colorCount = 1;

      var depthBuffer = null;
      var stencilBuffer = null;
      var depthStencilBuffer = null;
      var depthStencilTexture = false;

      if (typeof a === 'number') {
        width = a | 0;
        height = (b | 0) || width;
      } else if (!a) {
        width = height = 1;
      } else {
        check$1.type(a, 'object', 'invalid arguments for framebuffer');
        var options = a;

        if ('shape' in options) {
          var shape = options.shape;
          check$1(Array.isArray(shape) && shape.length >= 2,
            'invalid shape for framebuffer');
          width = shape[0];
          height = shape[1];
        } else {
          if ('radius' in options) {
            width = height = options.radius;
          }
          if ('width' in options) {
            width = options.width;
          }
          if ('height' in options) {
            height = options.height;
          }
        }

        if ('color' in options ||
            'colors' in options) {
          colorBuffer =
            options.color ||
            options.colors;
          if (Array.isArray(colorBuffer)) {
            check$1(
              colorBuffer.length === 1 || extDrawBuffers,
              'multiple render targets not supported');
          }
        }

        if (!colorBuffer) {
          if ('colorCount' in options) {
            colorCount = options.colorCount | 0;
            check$1(colorCount > 0, 'invalid color buffer count');
          }

          if ('colorTexture' in options) {
            colorTexture = !!options.colorTexture;
            colorFormat = 'rgba4';
          }

          if ('colorType' in options) {
            colorType = options.colorType;
            if (!colorTexture) {
              if (colorType === 'half float' || colorType === 'float16') {
                check$1(extensions.ext_color_buffer_half_float,
                  'you must enable EXT_color_buffer_half_float to use 16-bit render buffers');
                colorFormat = 'rgba16f';
              } else if (colorType === 'float' || colorType === 'float32') {
                check$1(extensions.webgl_color_buffer_float,
                  'you must enable WEBGL_color_buffer_float in order to use 32-bit floating point renderbuffers');
                colorFormat = 'rgba32f';
              }
            } else {
              check$1(extensions.oes_texture_float ||
                !(colorType === 'float' || colorType === 'float32'),
                'you must enable OES_texture_float in order to use floating point framebuffer objects');
              check$1(extensions.oes_texture_half_float ||
                !(colorType === 'half float' || colorType === 'float16'),
                'you must enable OES_texture_half_float in order to use 16-bit floating point framebuffer objects');
            }
            check$1.oneOf(colorType, colorTypes, 'invalid color type');
          }

          if ('colorFormat' in options) {
            colorFormat = options.colorFormat;
            if (colorTextureFormats.indexOf(colorFormat) >= 0) {
              colorTexture = true;
            } else if (colorRenderbufferFormats.indexOf(colorFormat) >= 0) {
              colorTexture = false;
            } else {
              if (colorTexture) {
                check$1.oneOf(
                  options.colorFormat, colorTextureFormats,
                  'invalid color format for texture');
              } else {
                check$1.oneOf(
                  options.colorFormat, colorRenderbufferFormats,
                  'invalid color format for renderbuffer');
              }
            }
          }
        }

        if ('depthTexture' in options || 'depthStencilTexture' in options) {
          depthStencilTexture = !!(options.depthTexture ||
            options.depthStencilTexture);
          check$1(!depthStencilTexture || extensions.webgl_depth_texture,
            'webgl_depth_texture extension not supported');
        }

        if ('depth' in options) {
          if (typeof options.depth === 'boolean') {
            needsDepth = options.depth;
          } else {
            depthBuffer = options.depth;
            needsStencil = false;
          }
        }

        if ('stencil' in options) {
          if (typeof options.stencil === 'boolean') {
            needsStencil = options.stencil;
          } else {
            stencilBuffer = options.stencil;
            needsDepth = false;
          }
        }

        if ('depthStencil' in options) {
          if (typeof options.depthStencil === 'boolean') {
            needsDepth = needsStencil = options.depthStencil;
          } else {
            depthStencilBuffer = options.depthStencil;
            needsDepth = false;
            needsStencil = false;
          }
        }
      }

      // parse attachments
      var colorAttachments = null;
      var depthAttachment = null;
      var stencilAttachment = null;
      var depthStencilAttachment = null;

      // Set up color attachments
      if (Array.isArray(colorBuffer)) {
        colorAttachments = colorBuffer.map(parseAttachment);
      } else if (colorBuffer) {
        colorAttachments = [parseAttachment(colorBuffer)];
      } else {
        colorAttachments = new Array(colorCount);
        for (i = 0; i < colorCount; ++i) {
          colorAttachments[i] = allocAttachment(
            width,
            height,
            colorTexture,
            colorFormat,
            colorType);
        }
      }

      check$1(extensions.webgl_draw_buffers || colorAttachments.length <= 1,
        'you must enable the WEBGL_draw_buffers extension in order to use multiple color buffers.');
      check$1(colorAttachments.length <= limits.maxColorAttachments,
        'too many color attachments, not supported');

      width = width || colorAttachments[0].width;
      height = height || colorAttachments[0].height;

      if (depthBuffer) {
        depthAttachment = parseAttachment(depthBuffer);
      } else if (needsDepth && !needsStencil) {
        depthAttachment = allocAttachment(
          width,
          height,
          depthStencilTexture,
          'depth',
          'uint32');
      }

      if (stencilBuffer) {
        stencilAttachment = parseAttachment(stencilBuffer);
      } else if (needsStencil && !needsDepth) {
        stencilAttachment = allocAttachment(
          width,
          height,
          false,
          'stencil',
          'uint8');
      }

      if (depthStencilBuffer) {
        depthStencilAttachment = parseAttachment(depthStencilBuffer);
      } else if (!depthBuffer && !stencilBuffer && needsStencil && needsDepth) {
        depthStencilAttachment = allocAttachment(
          width,
          height,
          depthStencilTexture,
          'depth stencil',
          'depth stencil');
      }

      check$1(
        (!!depthBuffer) + (!!stencilBuffer) + (!!depthStencilBuffer) <= 1,
        'invalid framebuffer configuration, can specify exactly one depth/stencil attachment');

      var commonColorAttachmentSize = null;

      for (i = 0; i < colorAttachments.length; ++i) {
        incRefAndCheckShape(colorAttachments[i], width, height);
        check$1(!colorAttachments[i] ||
          (colorAttachments[i].texture &&
            colorTextureFormatEnums.indexOf(colorAttachments[i].texture._texture.format) >= 0) ||
          (colorAttachments[i].renderbuffer &&
            colorRenderbufferFormatEnums.indexOf(colorAttachments[i].renderbuffer._renderbuffer.format) >= 0),
          'framebuffer color attachment ' + i + ' is invalid');

        if (colorAttachments[i] && colorAttachments[i].texture) {
          var colorAttachmentSize =
              textureFormatChannels[colorAttachments[i].texture._texture.format] *
              textureTypeSizes[colorAttachments[i].texture._texture.type];

          if (commonColorAttachmentSize === null) {
            commonColorAttachmentSize = colorAttachmentSize;
          } else {
            // We need to make sure that all color attachments have the same number of bitplanes
            // (that is, the same numer of bits per pixel)
            // This is required by the GLES2.0 standard. See the beginning of Chapter 4 in that document.
            check$1(commonColorAttachmentSize === colorAttachmentSize,
                  'all color attachments much have the same number of bits per pixel.');
          }
        }
      }
      incRefAndCheckShape(depthAttachment, width, height);
      check$1(!depthAttachment ||
        (depthAttachment.texture &&
          depthAttachment.texture._texture.format === GL_DEPTH_COMPONENT$1) ||
        (depthAttachment.renderbuffer &&
          depthAttachment.renderbuffer._renderbuffer.format === GL_DEPTH_COMPONENT16$1),
        'invalid depth attachment for framebuffer object');
      incRefAndCheckShape(stencilAttachment, width, height);
      check$1(!stencilAttachment ||
        (stencilAttachment.renderbuffer &&
          stencilAttachment.renderbuffer._renderbuffer.format === GL_STENCIL_INDEX8$1),
        'invalid stencil attachment for framebuffer object');
      incRefAndCheckShape(depthStencilAttachment, width, height);
      check$1(!depthStencilAttachment ||
        (depthStencilAttachment.texture &&
          depthStencilAttachment.texture._texture.format === GL_DEPTH_STENCIL$2) ||
        (depthStencilAttachment.renderbuffer &&
          depthStencilAttachment.renderbuffer._renderbuffer.format === GL_DEPTH_STENCIL$2),
        'invalid depth-stencil attachment for framebuffer object');

      // decrement references
      decFBORefs(framebuffer);

      framebuffer.width = width;
      framebuffer.height = height;

      framebuffer.colorAttachments = colorAttachments;
      framebuffer.depthAttachment = depthAttachment;
      framebuffer.stencilAttachment = stencilAttachment;
      framebuffer.depthStencilAttachment = depthStencilAttachment;

      reglFramebuffer.color = colorAttachments.map(unwrapAttachment);
      reglFramebuffer.depth = unwrapAttachment(depthAttachment);
      reglFramebuffer.stencil = unwrapAttachment(stencilAttachment);
      reglFramebuffer.depthStencil = unwrapAttachment(depthStencilAttachment);

      reglFramebuffer.width = framebuffer.width;
      reglFramebuffer.height = framebuffer.height;

      updateFramebuffer(framebuffer);

      return reglFramebuffer
    }

    function resize (w_, h_) {
      check$1(framebufferState.next !== framebuffer,
        'can not resize a framebuffer which is currently in use');

      var w = w_ | 0;
      var h = (h_ | 0) || w;
      if (w === framebuffer.width && h === framebuffer.height) {
        return reglFramebuffer
      }

      // resize all buffers
      var colorAttachments = framebuffer.colorAttachments;
      for (var i = 0; i < colorAttachments.length; ++i) {
        resizeAttachment(colorAttachments[i], w, h);
      }
      resizeAttachment(framebuffer.depthAttachment, w, h);
      resizeAttachment(framebuffer.stencilAttachment, w, h);
      resizeAttachment(framebuffer.depthStencilAttachment, w, h);

      framebuffer.width = reglFramebuffer.width = w;
      framebuffer.height = reglFramebuffer.height = h;

      updateFramebuffer(framebuffer);

      return reglFramebuffer
    }

    reglFramebuffer(a0, a1);

    return extend(reglFramebuffer, {
      resize: resize,
      _reglType: 'framebuffer',
      _framebuffer: framebuffer,
      destroy: function () {
        destroy(framebuffer);
        decFBORefs(framebuffer);
      },
      use: function (block) {
        framebufferState.setFBO({
          framebuffer: reglFramebuffer
        }, block);
      }
    })
  }

  function createCubeFBO (options) {
    var faces = Array(6);

    function reglFramebufferCube (a) {
      var i;

      check$1(faces.indexOf(framebufferState.next) < 0,
        'can not update framebuffer which is currently in use');

      var extDrawBuffers = extensions.webgl_draw_buffers;

      var params = {
        color: null
      };

      var radius = 0;

      var colorBuffer = null;
      var colorFormat = 'rgba';
      var colorType = 'uint8';
      var colorCount = 1;

      if (typeof a === 'number') {
        radius = a | 0;
      } else if (!a) {
        radius = 1;
      } else {
        check$1.type(a, 'object', 'invalid arguments for framebuffer');
        var options = a;

        if ('shape' in options) {
          var shape = options.shape;
          check$1(
            Array.isArray(shape) && shape.length >= 2,
            'invalid shape for framebuffer');
          check$1(
            shape[0] === shape[1],
            'cube framebuffer must be square');
          radius = shape[0];
        } else {
          if ('radius' in options) {
            radius = options.radius | 0;
          }
          if ('width' in options) {
            radius = options.width | 0;
            if ('height' in options) {
              check$1(options.height === radius, 'must be square');
            }
          } else if ('height' in options) {
            radius = options.height | 0;
          }
        }

        if ('color' in options ||
            'colors' in options) {
          colorBuffer =
            options.color ||
            options.colors;
          if (Array.isArray(colorBuffer)) {
            check$1(
              colorBuffer.length === 1 || extDrawBuffers,
              'multiple render targets not supported');
          }
        }

        if (!colorBuffer) {
          if ('colorCount' in options) {
            colorCount = options.colorCount | 0;
            check$1(colorCount > 0, 'invalid color buffer count');
          }

          if ('colorType' in options) {
            check$1.oneOf(
              options.colorType, colorTypes,
              'invalid color type');
            colorType = options.colorType;
          }

          if ('colorFormat' in options) {
            colorFormat = options.colorFormat;
            check$1.oneOf(
              options.colorFormat, colorTextureFormats,
              'invalid color format for texture');
          }
        }

        if ('depth' in options) {
          params.depth = options.depth;
        }

        if ('stencil' in options) {
          params.stencil = options.stencil;
        }

        if ('depthStencil' in options) {
          params.depthStencil = options.depthStencil;
        }
      }

      var colorCubes;
      if (colorBuffer) {
        if (Array.isArray(colorBuffer)) {
          colorCubes = [];
          for (i = 0; i < colorBuffer.length; ++i) {
            colorCubes[i] = colorBuffer[i];
          }
        } else {
          colorCubes = [ colorBuffer ];
        }
      } else {
        colorCubes = Array(colorCount);
        var cubeMapParams = {
          radius: radius,
          format: colorFormat,
          type: colorType
        };
        for (i = 0; i < colorCount; ++i) {
          colorCubes[i] = textureState.createCube(cubeMapParams);
        }
      }

      // Check color cubes
      params.color = Array(colorCubes.length);
      for (i = 0; i < colorCubes.length; ++i) {
        var cube = colorCubes[i];
        check$1(
          typeof cube === 'function' && cube._reglType === 'textureCube',
          'invalid cube map');
        radius = radius || cube.width;
        check$1(
          cube.width === radius && cube.height === radius,
          'invalid cube map shape');
        params.color[i] = {
          target: GL_TEXTURE_CUBE_MAP_POSITIVE_X$1,
          data: colorCubes[i]
        };
      }

      for (i = 0; i < 6; ++i) {
        for (var j = 0; j < colorCubes.length; ++j) {
          params.color[j].target = GL_TEXTURE_CUBE_MAP_POSITIVE_X$1 + i;
        }
        // reuse depth-stencil attachments across all cube maps
        if (i > 0) {
          params.depth = faces[0].depth;
          params.stencil = faces[0].stencil;
          params.depthStencil = faces[0].depthStencil;
        }
        if (faces[i]) {
          (faces[i])(params);
        } else {
          faces[i] = createFBO(params);
        }
      }

      return extend(reglFramebufferCube, {
        width: radius,
        height: radius,
        color: colorCubes
      })
    }

    function resize (radius_) {
      var i;
      var radius = radius_ | 0;
      check$1(radius > 0 && radius <= limits.maxCubeMapSize,
        'invalid radius for cube fbo');

      if (radius === reglFramebufferCube.width) {
        return reglFramebufferCube
      }

      var colors = reglFramebufferCube.color;
      for (i = 0; i < colors.length; ++i) {
        colors[i].resize(radius);
      }

      for (i = 0; i < 6; ++i) {
        faces[i].resize(radius);
      }

      reglFramebufferCube.width = reglFramebufferCube.height = radius;

      return reglFramebufferCube
    }

    reglFramebufferCube(options);

    return extend(reglFramebufferCube, {
      faces: faces,
      resize: resize,
      _reglType: 'framebufferCube',
      destroy: function () {
        faces.forEach(function (f) {
          f.destroy();
        });
      }
    })
  }

  function restoreFramebuffers () {
    values(framebufferSet).forEach(function (fb) {
      fb.framebuffer = gl.createFramebuffer();
      updateFramebuffer(fb);
    });
  }

  return extend(framebufferState, {
    getFramebuffer: function (object) {
      if (typeof object === 'function' && object._reglType === 'framebuffer') {
        var fbo = object._framebuffer;
        if (fbo instanceof REGLFramebuffer) {
          return fbo
        }
      }
      return null
    },
    create: createFBO,
    createCube: createCubeFBO,
    clear: function () {
      values(framebufferSet).forEach(destroy);
    },
    restore: restoreFramebuffers
  })
}

var GL_FLOAT$5 = 5126;

function AttributeRecord () {
  this.state = 0;

  this.x = 0.0;
  this.y = 0.0;
  this.z = 0.0;
  this.w = 0.0;

  this.buffer = null;
  this.size = 0;
  this.normalized = false;
  this.type = GL_FLOAT$5;
  this.offset = 0;
  this.stride = 0;
  this.divisor = 0;
}

function wrapAttributeState (
  gl,
  extensions,
  limits,
  bufferState,
  stringStore) {
  var NUM_ATTRIBUTES = limits.maxAttributes;
  var attributeBindings = new Array(NUM_ATTRIBUTES);
  for (var i = 0; i < NUM_ATTRIBUTES; ++i) {
    attributeBindings[i] = new AttributeRecord();
  }

  return {
    Record: AttributeRecord,
    scope: {},
    state: attributeBindings
  }
}

var GL_FRAGMENT_SHADER = 35632;
var GL_VERTEX_SHADER = 35633;

var GL_ACTIVE_UNIFORMS = 0x8B86;
var GL_ACTIVE_ATTRIBUTES = 0x8B89;

function wrapShaderState (gl, stringStore, stats, config) {
  // ===================================================
  // glsl compilation and linking
  // ===================================================
  var fragShaders = {};
  var vertShaders = {};

  function ActiveInfo (name, id, location, info) {
    this.name = name;
    this.id = id;
    this.location = location;
    this.info = info;
  }

  function insertActiveInfo (list, info) {
    for (var i = 0; i < list.length; ++i) {
      if (list[i].id === info.id) {
        list[i].location = info.location;
        return
      }
    }
    list.push(info);
  }

  function getShader (type, id, command) {
    var cache = type === GL_FRAGMENT_SHADER ? fragShaders : vertShaders;
    var shader = cache[id];

    if (!shader) {
      var source = stringStore.str(id);
      shader = gl.createShader(type);
      gl.shaderSource(shader, source);
      gl.compileShader(shader);
      check$1.shaderError(gl, shader, source, type, command);
      cache[id] = shader;
    }

    return shader
  }

  // ===================================================
  // program linking
  // ===================================================
  var programCache = {};
  var programList = [];

  var PROGRAM_COUNTER = 0;

  function REGLProgram (fragId, vertId) {
    this.id = PROGRAM_COUNTER++;
    this.fragId = fragId;
    this.vertId = vertId;
    this.program = null;
    this.uniforms = [];
    this.attributes = [];

    if (config.profile) {
      this.stats = {
        uniformsCount: 0,
        attributesCount: 0
      };
    }
  }

  function linkProgram (desc, command) {
    var i, info;

    // -------------------------------
    // compile & link
    // -------------------------------
    var fragShader = getShader(GL_FRAGMENT_SHADER, desc.fragId);
    var vertShader = getShader(GL_VERTEX_SHADER, desc.vertId);

    var program = desc.program = gl.createProgram();
    gl.attachShader(program, fragShader);
    gl.attachShader(program, vertShader);
    gl.linkProgram(program);
    check$1.linkError(
      gl,
      program,
      stringStore.str(desc.fragId),
      stringStore.str(desc.vertId),
      command);

    // -------------------------------
    // grab uniforms
    // -------------------------------
    var numUniforms = gl.getProgramParameter(program, GL_ACTIVE_UNIFORMS);
    if (config.profile) {
      desc.stats.uniformsCount = numUniforms;
    }
    var uniforms = desc.uniforms;
    for (i = 0; i < numUniforms; ++i) {
      info = gl.getActiveUniform(program, i);
      if (info) {
        if (info.size > 1) {
          for (var j = 0; j < info.size; ++j) {
            var name = info.name.replace('[0]', '[' + j + ']');
            insertActiveInfo(uniforms, new ActiveInfo(
              name,
              stringStore.id(name),
              gl.getUniformLocation(program, name),
              info));
          }
        } else {
          insertActiveInfo(uniforms, new ActiveInfo(
            info.name,
            stringStore.id(info.name),
            gl.getUniformLocation(program, info.name),
            info));
        }
      }
    }

    // -------------------------------
    // grab attributes
    // -------------------------------
    var numAttributes = gl.getProgramParameter(program, GL_ACTIVE_ATTRIBUTES);
    if (config.profile) {
      desc.stats.attributesCount = numAttributes;
    }

    var attributes = desc.attributes;
    for (i = 0; i < numAttributes; ++i) {
      info = gl.getActiveAttrib(program, i);
      if (info) {
        insertActiveInfo(attributes, new ActiveInfo(
          info.name,
          stringStore.id(info.name),
          gl.getAttribLocation(program, info.name),
          info));
      }
    }
  }

  if (config.profile) {
    stats.getMaxUniformsCount = function () {
      var m = 0;
      programList.forEach(function (desc) {
        if (desc.stats.uniformsCount > m) {
          m = desc.stats.uniformsCount;
        }
      });
      return m
    };

    stats.getMaxAttributesCount = function () {
      var m = 0;
      programList.forEach(function (desc) {
        if (desc.stats.attributesCount > m) {
          m = desc.stats.attributesCount;
        }
      });
      return m
    };
  }

  function restoreShaders () {
    fragShaders = {};
    vertShaders = {};
    for (var i = 0; i < programList.length; ++i) {
      linkProgram(programList[i]);
    }
  }

  return {
    clear: function () {
      var deleteShader = gl.deleteShader.bind(gl);
      values(fragShaders).forEach(deleteShader);
      fragShaders = {};
      values(vertShaders).forEach(deleteShader);
      vertShaders = {};

      programList.forEach(function (desc) {
        gl.deleteProgram(desc.program);
      });
      programList.length = 0;
      programCache = {};

      stats.shaderCount = 0;
    },

    program: function (vertId, fragId, command) {
      check$1.command(vertId >= 0, 'missing vertex shader', command);
      check$1.command(fragId >= 0, 'missing fragment shader', command);

      var cache = programCache[fragId];
      if (!cache) {
        cache = programCache[fragId] = {};
      }
      var program = cache[vertId];
      if (!program) {
        program = new REGLProgram(fragId, vertId);
        stats.shaderCount++;

        linkProgram(program, command);
        cache[vertId] = program;
        programList.push(program);
      }
      return program
    },

    restore: restoreShaders,

    shader: getShader,

    frag: -1,
    vert: -1
  }
}

var GL_RGBA$2 = 6408;
var GL_UNSIGNED_BYTE$6 = 5121;
var GL_PACK_ALIGNMENT = 0x0D05;
var GL_FLOAT$6 = 0x1406; // 5126

function wrapReadPixels (
  gl,
  framebufferState,
  reglPoll,
  context,
  glAttributes,
  extensions) {
  function readPixelsImpl (input) {
    var type;
    if (framebufferState.next === null) {
      check$1(
        glAttributes.preserveDrawingBuffer,
        'you must create a webgl context with "preserveDrawingBuffer":true in order to read pixels from the drawing buffer');
      type = GL_UNSIGNED_BYTE$6;
    } else {
      check$1(
        framebufferState.next.colorAttachments[0].texture !== null,
          'You cannot read from a renderbuffer');
      type = framebufferState.next.colorAttachments[0].texture._texture.type;

      if (extensions.oes_texture_float) {
        check$1(
          type === GL_UNSIGNED_BYTE$6 || type === GL_FLOAT$6,
          'Reading from a framebuffer is only allowed for the types \'uint8\' and \'float\'');
      } else {
        check$1(
          type === GL_UNSIGNED_BYTE$6,
          'Reading from a framebuffer is only allowed for the type \'uint8\'');
      }
    }

    var x = 0;
    var y = 0;
    var width = context.framebufferWidth;
    var height = context.framebufferHeight;
    var data = null;

    if (isTypedArray(input)) {
      data = input;
    } else if (input) {
      check$1.type(input, 'object', 'invalid arguments to regl.read()');
      x = input.x | 0;
      y = input.y | 0;
      check$1(
        x >= 0 && x < context.framebufferWidth,
        'invalid x offset for regl.read');
      check$1(
        y >= 0 && y < context.framebufferHeight,
        'invalid y offset for regl.read');
      width = (input.width || (context.framebufferWidth - x)) | 0;
      height = (input.height || (context.framebufferHeight - y)) | 0;
      data = input.data || null;
    }

    // sanity check input.data
    if (data) {
      if (type === GL_UNSIGNED_BYTE$6) {
        check$1(
          data instanceof Uint8Array,
          'buffer must be \'Uint8Array\' when reading from a framebuffer of type \'uint8\'');
      } else if (type === GL_FLOAT$6) {
        check$1(
          data instanceof Float32Array,
          'buffer must be \'Float32Array\' when reading from a framebuffer of type \'float\'');
      }
    }

    check$1(
      width > 0 && width + x <= context.framebufferWidth,
      'invalid width for read pixels');
    check$1(
      height > 0 && height + y <= context.framebufferHeight,
      'invalid height for read pixels');

    // Update WebGL state
    reglPoll();

    // Compute size
    var size = width * height * 4;

    // Allocate data
    if (!data) {
      if (type === GL_UNSIGNED_BYTE$6) {
        data = new Uint8Array(size);
      } else if (type === GL_FLOAT$6) {
        data = data || new Float32Array(size);
      }
    }

    // Type check
    check$1.isTypedArray(data, 'data buffer for regl.read() must be a typedarray');
    check$1(data.byteLength >= size, 'data buffer for regl.read() too small');

    // Run read pixels
    gl.pixelStorei(GL_PACK_ALIGNMENT, 4);
    gl.readPixels(x, y, width, height, GL_RGBA$2,
                  type,
                  data);

    return data
  }

  function readPixelsFBO (options) {
    var result;
    framebufferState.setFBO({
      framebuffer: options.framebuffer
    }, function () {
      result = readPixelsImpl(options);
    });
    return result
  }

  function readPixels (options) {
    if (!options || !('framebuffer' in options)) {
      return readPixelsImpl(options)
    } else {
      return readPixelsFBO(options)
    }
  }

  return readPixels
}

function slice (x) {
  return Array.prototype.slice.call(x)
}

function join (x) {
  return slice(x).join('')
}

function createEnvironment () {
  // Unique variable id counter
  var varCounter = 0;

  // Linked values are passed from this scope into the generated code block
  // Calling link() passes a value into the generated scope and returns
  // the variable name which it is bound to
  var linkedNames = [];
  var linkedValues = [];
  function link (value) {
    for (var i = 0; i < linkedValues.length; ++i) {
      if (linkedValues[i] === value) {
        return linkedNames[i]
      }
    }

    var name = 'g' + (varCounter++);
    linkedNames.push(name);
    linkedValues.push(value);
    return name
  }

  // create a code block
  function block () {
    var code = [];
    function push () {
      code.push.apply(code, slice(arguments));
    }

    var vars = [];
    function def () {
      var name = 'v' + (varCounter++);
      vars.push(name);

      if (arguments.length > 0) {
        code.push(name, '=');
        code.push.apply(code, slice(arguments));
        code.push(';');
      }

      return name
    }

    return extend(push, {
      def: def,
      toString: function () {
        return join([
          (vars.length > 0 ? 'var ' + vars + ';' : ''),
          join(code)
        ])
      }
    })
  }

  function scope () {
    var entry = block();
    var exit = block();

    var entryToString = entry.toString;
    var exitToString = exit.toString;

    function save (object, prop) {
      exit(object, prop, '=', entry.def(object, prop), ';');
    }

    return extend(function () {
      entry.apply(entry, slice(arguments));
    }, {
      def: entry.def,
      entry: entry,
      exit: exit,
      save: save,
      set: function (object, prop, value) {
        save(object, prop);
        entry(object, prop, '=', value, ';');
      },
      toString: function () {
        return entryToString() + exitToString()
      }
    })
  }

  function conditional () {
    var pred = join(arguments);
    var thenBlock = scope();
    var elseBlock = scope();

    var thenToString = thenBlock.toString;
    var elseToString = elseBlock.toString;

    return extend(thenBlock, {
      then: function () {
        thenBlock.apply(thenBlock, slice(arguments));
        return this
      },
      else: function () {
        elseBlock.apply(elseBlock, slice(arguments));
        return this
      },
      toString: function () {
        var elseClause = elseToString();
        if (elseClause) {
          elseClause = 'else{' + elseClause + '}';
        }
        return join([
          'if(', pred, '){',
          thenToString(),
          '}', elseClause
        ])
      }
    })
  }

  // procedure list
  var globalBlock = block();
  var procedures = {};
  function proc (name, count) {
    var args = [];
    function arg () {
      var name = 'a' + args.length;
      args.push(name);
      return name
    }

    count = count || 0;
    for (var i = 0; i < count; ++i) {
      arg();
    }

    var body = scope();
    var bodyToString = body.toString;

    var result = procedures[name] = extend(body, {
      arg: arg,
      toString: function () {
        return join([
          'function(', args.join(), '){',
          bodyToString(),
          '}'
        ])
      }
    });

    return result
  }

  function compile () {
    var code = ['"use strict";',
      globalBlock,
      'return {'];
    Object.keys(procedures).forEach(function (name) {
      code.push('"', name, '":', procedures[name].toString(), ',');
    });
    code.push('}');
    var src = join(code)
      .replace(/;/g, ';\n')
      .replace(/}/g, '}\n')
      .replace(/{/g, '{\n');
    var proc = Function.apply(null, linkedNames.concat(src));
    return proc.apply(null, linkedValues)
  }

  return {
    global: globalBlock,
    link: link,
    block: block,
    proc: proc,
    scope: scope,
    cond: conditional,
    compile: compile
  }
}

// "cute" names for vector components
var CUTE_COMPONENTS = 'xyzw'.split('');

var GL_UNSIGNED_BYTE$7 = 5121;

var ATTRIB_STATE_POINTER = 1;
var ATTRIB_STATE_CONSTANT = 2;

var DYN_FUNC$1 = 0;
var DYN_PROP$1 = 1;
var DYN_CONTEXT$1 = 2;
var DYN_STATE$1 = 3;
var DYN_THUNK = 4;

var S_DITHER = 'dither';
var S_BLEND_ENABLE = 'blend.enable';
var S_BLEND_COLOR = 'blend.color';
var S_BLEND_EQUATION = 'blend.equation';
var S_BLEND_FUNC = 'blend.func';
var S_DEPTH_ENABLE = 'depth.enable';
var S_DEPTH_FUNC = 'depth.func';
var S_DEPTH_RANGE = 'depth.range';
var S_DEPTH_MASK = 'depth.mask';
var S_COLOR_MASK = 'colorMask';
var S_CULL_ENABLE = 'cull.enable';
var S_CULL_FACE = 'cull.face';
var S_FRONT_FACE = 'frontFace';
var S_LINE_WIDTH = 'lineWidth';
var S_POLYGON_OFFSET_ENABLE = 'polygonOffset.enable';
var S_POLYGON_OFFSET_OFFSET = 'polygonOffset.offset';
var S_SAMPLE_ALPHA = 'sample.alpha';
var S_SAMPLE_ENABLE = 'sample.enable';
var S_SAMPLE_COVERAGE = 'sample.coverage';
var S_STENCIL_ENABLE = 'stencil.enable';
var S_STENCIL_MASK = 'stencil.mask';
var S_STENCIL_FUNC = 'stencil.func';
var S_STENCIL_OPFRONT = 'stencil.opFront';
var S_STENCIL_OPBACK = 'stencil.opBack';
var S_SCISSOR_ENABLE = 'scissor.enable';
var S_SCISSOR_BOX = 'scissor.box';
var S_VIEWPORT = 'viewport';

var S_PROFILE = 'profile';

var S_FRAMEBUFFER = 'framebuffer';
var S_VERT = 'vert';
var S_FRAG = 'frag';
var S_ELEMENTS = 'elements';
var S_PRIMITIVE = 'primitive';
var S_COUNT = 'count';
var S_OFFSET = 'offset';
var S_INSTANCES = 'instances';

var SUFFIX_WIDTH = 'Width';
var SUFFIX_HEIGHT = 'Height';

var S_FRAMEBUFFER_WIDTH = S_FRAMEBUFFER + SUFFIX_WIDTH;
var S_FRAMEBUFFER_HEIGHT = S_FRAMEBUFFER + SUFFIX_HEIGHT;
var S_VIEWPORT_WIDTH = S_VIEWPORT + SUFFIX_WIDTH;
var S_VIEWPORT_HEIGHT = S_VIEWPORT + SUFFIX_HEIGHT;
var S_DRAWINGBUFFER = 'drawingBuffer';
var S_DRAWINGBUFFER_WIDTH = S_DRAWINGBUFFER + SUFFIX_WIDTH;
var S_DRAWINGBUFFER_HEIGHT = S_DRAWINGBUFFER + SUFFIX_HEIGHT;

var NESTED_OPTIONS = [
  S_BLEND_FUNC,
  S_BLEND_EQUATION,
  S_STENCIL_FUNC,
  S_STENCIL_OPFRONT,
  S_STENCIL_OPBACK,
  S_SAMPLE_COVERAGE,
  S_VIEWPORT,
  S_SCISSOR_BOX,
  S_POLYGON_OFFSET_OFFSET
];

var GL_ARRAY_BUFFER$1 = 34962;
var GL_ELEMENT_ARRAY_BUFFER$1 = 34963;

var GL_FRAGMENT_SHADER$1 = 35632;
var GL_VERTEX_SHADER$1 = 35633;

var GL_TEXTURE_2D$2 = 0x0DE1;
var GL_TEXTURE_CUBE_MAP$1 = 0x8513;

var GL_CULL_FACE = 0x0B44;
var GL_BLEND = 0x0BE2;
var GL_DITHER = 0x0BD0;
var GL_STENCIL_TEST = 0x0B90;
var GL_DEPTH_TEST = 0x0B71;
var GL_SCISSOR_TEST = 0x0C11;
var GL_POLYGON_OFFSET_FILL = 0x8037;
var GL_SAMPLE_ALPHA_TO_COVERAGE = 0x809E;
var GL_SAMPLE_COVERAGE = 0x80A0;

var GL_FLOAT$7 = 5126;
var GL_FLOAT_VEC2 = 35664;
var GL_FLOAT_VEC3 = 35665;
var GL_FLOAT_VEC4 = 35666;
var GL_INT$3 = 5124;
var GL_INT_VEC2 = 35667;
var GL_INT_VEC3 = 35668;
var GL_INT_VEC4 = 35669;
var GL_BOOL = 35670;
var GL_BOOL_VEC2 = 35671;
var GL_BOOL_VEC3 = 35672;
var GL_BOOL_VEC4 = 35673;
var GL_FLOAT_MAT2 = 35674;
var GL_FLOAT_MAT3 = 35675;
var GL_FLOAT_MAT4 = 35676;
var GL_SAMPLER_2D = 35678;
var GL_SAMPLER_CUBE = 35680;

var GL_TRIANGLES$1 = 4;

var GL_FRONT = 1028;
var GL_BACK = 1029;
var GL_CW = 0x0900;
var GL_CCW = 0x0901;
var GL_MIN_EXT = 0x8007;
var GL_MAX_EXT = 0x8008;
var GL_ALWAYS = 519;
var GL_KEEP = 7680;
var GL_ZERO = 0;
var GL_ONE = 1;
var GL_FUNC_ADD = 0x8006;
var GL_LESS = 513;

var GL_FRAMEBUFFER$1 = 0x8D40;
var GL_COLOR_ATTACHMENT0$1 = 0x8CE0;

var blendFuncs = {
  '0': 0,
  '1': 1,
  'zero': 0,
  'one': 1,
  'src color': 768,
  'one minus src color': 769,
  'src alpha': 770,
  'one minus src alpha': 771,
  'dst color': 774,
  'one minus dst color': 775,
  'dst alpha': 772,
  'one minus dst alpha': 773,
  'constant color': 32769,
  'one minus constant color': 32770,
  'constant alpha': 32771,
  'one minus constant alpha': 32772,
  'src alpha saturate': 776
};

// There are invalid values for srcRGB and dstRGB. See:
// https://www.khronos.org/registry/webgl/specs/1.0/#6.13
// https://github.com/KhronosGroup/WebGL/blob/0d3201f5f7ec3c0060bc1f04077461541f1987b9/conformance-suites/1.0.3/conformance/misc/webgl-specific.html#L56
var invalidBlendCombinations = [
  'constant color, constant alpha',
  'one minus constant color, constant alpha',
  'constant color, one minus constant alpha',
  'one minus constant color, one minus constant alpha',
  'constant alpha, constant color',
  'constant alpha, one minus constant color',
  'one minus constant alpha, constant color',
  'one minus constant alpha, one minus constant color'
];

var compareFuncs = {
  'never': 512,
  'less': 513,
  '<': 513,
  'equal': 514,
  '=': 514,
  '==': 514,
  '===': 514,
  'lequal': 515,
  '<=': 515,
  'greater': 516,
  '>': 516,
  'notequal': 517,
  '!=': 517,
  '!==': 517,
  'gequal': 518,
  '>=': 518,
  'always': 519
};

var stencilOps = {
  '0': 0,
  'zero': 0,
  'keep': 7680,
  'replace': 7681,
  'increment': 7682,
  'decrement': 7683,
  'increment wrap': 34055,
  'decrement wrap': 34056,
  'invert': 5386
};

var shaderType = {
  'frag': GL_FRAGMENT_SHADER$1,
  'vert': GL_VERTEX_SHADER$1
};

var orientationType = {
  'cw': GL_CW,
  'ccw': GL_CCW
};

function isBufferArgs (x) {
  return Array.isArray(x) ||
    isTypedArray(x) ||
    isNDArrayLike(x)
}

// Make sure viewport is processed first
function sortState (state) {
  return state.sort(function (a, b) {
    if (a === S_VIEWPORT) {
      return -1
    } else if (b === S_VIEWPORT) {
      return 1
    }
    return (a < b) ? -1 : 1
  })
}

function Declaration (thisDep, contextDep, propDep, append) {
  this.thisDep = thisDep;
  this.contextDep = contextDep;
  this.propDep = propDep;
  this.append = append;
}

function isStatic (decl) {
  return decl && !(decl.thisDep || decl.contextDep || decl.propDep)
}

function createStaticDecl (append) {
  return new Declaration(false, false, false, append)
}

function createDynamicDecl (dyn, append) {
  var type = dyn.type;
  if (type === DYN_FUNC$1) {
    var numArgs = dyn.data.length;
    return new Declaration(
      true,
      numArgs >= 1,
      numArgs >= 2,
      append)
  } else if (type === DYN_THUNK) {
    var data = dyn.data;
    return new Declaration(
      data.thisDep,
      data.contextDep,
      data.propDep,
      append)
  } else {
    return new Declaration(
      type === DYN_STATE$1,
      type === DYN_CONTEXT$1,
      type === DYN_PROP$1,
      append)
  }
}

var SCOPE_DECL = new Declaration(false, false, false, function () {});

function reglCore (
  gl,
  stringStore,
  extensions,
  limits,
  bufferState,
  elementState,
  textureState,
  framebufferState,
  uniformState,
  attributeState,
  shaderState,
  drawState,
  contextState,
  timer,
  config) {
  var AttributeRecord = attributeState.Record;

  var blendEquations = {
    'add': 32774,
    'subtract': 32778,
    'reverse subtract': 32779
  };
  if (extensions.ext_blend_minmax) {
    blendEquations.min = GL_MIN_EXT;
    blendEquations.max = GL_MAX_EXT;
  }

  var extInstancing = extensions.angle_instanced_arrays;
  var extDrawBuffers = extensions.webgl_draw_buffers;

  // ===================================================
  // ===================================================
  // WEBGL STATE
  // ===================================================
  // ===================================================
  var currentState = {
    dirty: true,
    profile: config.profile
  };
  var nextState = {};
  var GL_STATE_NAMES = [];
  var GL_FLAGS = {};
  var GL_VARIABLES = {};

  function propName (name) {
    return name.replace('.', '_')
  }

  function stateFlag (sname, cap, init) {
    var name = propName(sname);
    GL_STATE_NAMES.push(sname);
    nextState[name] = currentState[name] = !!init;
    GL_FLAGS[name] = cap;
  }

  function stateVariable (sname, func, init) {
    var name = propName(sname);
    GL_STATE_NAMES.push(sname);
    if (Array.isArray(init)) {
      currentState[name] = init.slice();
      nextState[name] = init.slice();
    } else {
      currentState[name] = nextState[name] = init;
    }
    GL_VARIABLES[name] = func;
  }

  // Dithering
  stateFlag(S_DITHER, GL_DITHER);

  // Blending
  stateFlag(S_BLEND_ENABLE, GL_BLEND);
  stateVariable(S_BLEND_COLOR, 'blendColor', [0, 0, 0, 0]);
  stateVariable(S_BLEND_EQUATION, 'blendEquationSeparate',
    [GL_FUNC_ADD, GL_FUNC_ADD]);
  stateVariable(S_BLEND_FUNC, 'blendFuncSeparate',
    [GL_ONE, GL_ZERO, GL_ONE, GL_ZERO]);

  // Depth
  stateFlag(S_DEPTH_ENABLE, GL_DEPTH_TEST, true);
  stateVariable(S_DEPTH_FUNC, 'depthFunc', GL_LESS);
  stateVariable(S_DEPTH_RANGE, 'depthRange', [0, 1]);
  stateVariable(S_DEPTH_MASK, 'depthMask', true);

  // Color mask
  stateVariable(S_COLOR_MASK, S_COLOR_MASK, [true, true, true, true]);

  // Face culling
  stateFlag(S_CULL_ENABLE, GL_CULL_FACE);
  stateVariable(S_CULL_FACE, 'cullFace', GL_BACK);

  // Front face orientation
  stateVariable(S_FRONT_FACE, S_FRONT_FACE, GL_CCW);

  // Line width
  stateVariable(S_LINE_WIDTH, S_LINE_WIDTH, 1);

  // Polygon offset
  stateFlag(S_POLYGON_OFFSET_ENABLE, GL_POLYGON_OFFSET_FILL);
  stateVariable(S_POLYGON_OFFSET_OFFSET, 'polygonOffset', [0, 0]);

  // Sample coverage
  stateFlag(S_SAMPLE_ALPHA, GL_SAMPLE_ALPHA_TO_COVERAGE);
  stateFlag(S_SAMPLE_ENABLE, GL_SAMPLE_COVERAGE);
  stateVariable(S_SAMPLE_COVERAGE, 'sampleCoverage', [1, false]);

  // Stencil
  stateFlag(S_STENCIL_ENABLE, GL_STENCIL_TEST);
  stateVariable(S_STENCIL_MASK, 'stencilMask', -1);
  stateVariable(S_STENCIL_FUNC, 'stencilFunc', [GL_ALWAYS, 0, -1]);
  stateVariable(S_STENCIL_OPFRONT, 'stencilOpSeparate',
    [GL_FRONT, GL_KEEP, GL_KEEP, GL_KEEP]);
  stateVariable(S_STENCIL_OPBACK, 'stencilOpSeparate',
    [GL_BACK, GL_KEEP, GL_KEEP, GL_KEEP]);

  // Scissor
  stateFlag(S_SCISSOR_ENABLE, GL_SCISSOR_TEST);
  stateVariable(S_SCISSOR_BOX, 'scissor',
    [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]);

  // Viewport
  stateVariable(S_VIEWPORT, S_VIEWPORT,
    [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]);

  // ===================================================
  // ===================================================
  // ENVIRONMENT
  // ===================================================
  // ===================================================
  var sharedState = {
    gl: gl,
    context: contextState,
    strings: stringStore,
    next: nextState,
    current: currentState,
    draw: drawState,
    elements: elementState,
    buffer: bufferState,
    shader: shaderState,
    attributes: attributeState.state,
    uniforms: uniformState,
    framebuffer: framebufferState,
    extensions: extensions,

    timer: timer,
    isBufferArgs: isBufferArgs
  };

  var sharedConstants = {
    primTypes: primTypes,
    compareFuncs: compareFuncs,
    blendFuncs: blendFuncs,
    blendEquations: blendEquations,
    stencilOps: stencilOps,
    glTypes: glTypes,
    orientationType: orientationType
  };

  check$1.optional(function () {
    sharedState.isArrayLike = isArrayLike;
  });

  if (extDrawBuffers) {
    sharedConstants.backBuffer = [GL_BACK];
    sharedConstants.drawBuffer = loop(limits.maxDrawbuffers, function (i) {
      if (i === 0) {
        return [0]
      }
      return loop(i, function (j) {
        return GL_COLOR_ATTACHMENT0$1 + j
      })
    });
  }

  var drawCallCounter = 0;
  function createREGLEnvironment () {
    var env = createEnvironment();
    var link = env.link;
    var global = env.global;
    env.id = drawCallCounter++;

    env.batchId = '0';

    // link shared state
    var SHARED = link(sharedState);
    var shared = env.shared = {
      props: 'a0'
    };
    Object.keys(sharedState).forEach(function (prop) {
      shared[prop] = global.def(SHARED, '.', prop);
    });

    // Inject runtime assertion stuff for debug builds
    check$1.optional(function () {
      env.CHECK = link(check$1);
      env.commandStr = check$1.guessCommand();
      env.command = link(env.commandStr);
      env.assert = function (block, pred, message) {
        block(
          'if(!(', pred, '))',
          this.CHECK, '.commandRaise(', link(message), ',', this.command, ');');
      };

      sharedConstants.invalidBlendCombinations = invalidBlendCombinations;
    });

    // Copy GL state variables over
    var nextVars = env.next = {};
    var currentVars = env.current = {};
    Object.keys(GL_VARIABLES).forEach(function (variable) {
      if (Array.isArray(currentState[variable])) {
        nextVars[variable] = global.def(shared.next, '.', variable);
        currentVars[variable] = global.def(shared.current, '.', variable);
      }
    });

    // Initialize shared constants
    var constants = env.constants = {};
    Object.keys(sharedConstants).forEach(function (name) {
      constants[name] = global.def(JSON.stringify(sharedConstants[name]));
    });

    // Helper function for calling a block
    env.invoke = function (block, x) {
      switch (x.type) {
        case DYN_FUNC$1:
          var argList = [
            'this',
            shared.context,
            shared.props,
            env.batchId
          ];
          return block.def(
            link(x.data), '.call(',
              argList.slice(0, Math.max(x.data.length + 1, 4)),
             ')')
        case DYN_PROP$1:
          return block.def(shared.props, x.data)
        case DYN_CONTEXT$1:
          return block.def(shared.context, x.data)
        case DYN_STATE$1:
          return block.def('this', x.data)
        case DYN_THUNK:
          x.data.append(env, block);
          return x.data.ref
      }
    };

    env.attribCache = {};

    var scopeAttribs = {};
    env.scopeAttrib = function (name) {
      var id = stringStore.id(name);
      if (id in scopeAttribs) {
        return scopeAttribs[id]
      }
      var binding = attributeState.scope[id];
      if (!binding) {
        binding = attributeState.scope[id] = new AttributeRecord();
      }
      var result = scopeAttribs[id] = link(binding);
      return result
    };

    return env
  }

  // ===================================================
  // ===================================================
  // PARSING
  // ===================================================
  // ===================================================
  function parseProfile (options) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    var profileEnable;
    if (S_PROFILE in staticOptions) {
      var value = !!staticOptions[S_PROFILE];
      profileEnable = createStaticDecl(function (env, scope) {
        return value
      });
      profileEnable.enable = value;
    } else if (S_PROFILE in dynamicOptions) {
      var dyn = dynamicOptions[S_PROFILE];
      profileEnable = createDynamicDecl(dyn, function (env, scope) {
        return env.invoke(scope, dyn)
      });
    }

    return profileEnable
  }

  function parseFramebuffer (options, env) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    if (S_FRAMEBUFFER in staticOptions) {
      var framebuffer = staticOptions[S_FRAMEBUFFER];
      if (framebuffer) {
        framebuffer = framebufferState.getFramebuffer(framebuffer);
        check$1.command(framebuffer, 'invalid framebuffer object');
        return createStaticDecl(function (env, block) {
          var FRAMEBUFFER = env.link(framebuffer);
          var shared = env.shared;
          block.set(
            shared.framebuffer,
            '.next',
            FRAMEBUFFER);
          var CONTEXT = shared.context;
          block.set(
            CONTEXT,
            '.' + S_FRAMEBUFFER_WIDTH,
            FRAMEBUFFER + '.width');
          block.set(
            CONTEXT,
            '.' + S_FRAMEBUFFER_HEIGHT,
            FRAMEBUFFER + '.height');
          return FRAMEBUFFER
        })
      } else {
        return createStaticDecl(function (env, scope) {
          var shared = env.shared;
          scope.set(
            shared.framebuffer,
            '.next',
            'null');
          var CONTEXT = shared.context;
          scope.set(
            CONTEXT,
            '.' + S_FRAMEBUFFER_WIDTH,
            CONTEXT + '.' + S_DRAWINGBUFFER_WIDTH);
          scope.set(
            CONTEXT,
            '.' + S_FRAMEBUFFER_HEIGHT,
            CONTEXT + '.' + S_DRAWINGBUFFER_HEIGHT);
          return 'null'
        })
      }
    } else if (S_FRAMEBUFFER in dynamicOptions) {
      var dyn = dynamicOptions[S_FRAMEBUFFER];
      return createDynamicDecl(dyn, function (env, scope) {
        var FRAMEBUFFER_FUNC = env.invoke(scope, dyn);
        var shared = env.shared;
        var FRAMEBUFFER_STATE = shared.framebuffer;
        var FRAMEBUFFER = scope.def(
          FRAMEBUFFER_STATE, '.getFramebuffer(', FRAMEBUFFER_FUNC, ')');

        check$1.optional(function () {
          env.assert(scope,
            '!' + FRAMEBUFFER_FUNC + '||' + FRAMEBUFFER,
            'invalid framebuffer object');
        });

        scope.set(
          FRAMEBUFFER_STATE,
          '.next',
          FRAMEBUFFER);
        var CONTEXT = shared.context;
        scope.set(
          CONTEXT,
          '.' + S_FRAMEBUFFER_WIDTH,
          FRAMEBUFFER + '?' + FRAMEBUFFER + '.width:' +
          CONTEXT + '.' + S_DRAWINGBUFFER_WIDTH);
        scope.set(
          CONTEXT,
          '.' + S_FRAMEBUFFER_HEIGHT,
          FRAMEBUFFER +
          '?' + FRAMEBUFFER + '.height:' +
          CONTEXT + '.' + S_DRAWINGBUFFER_HEIGHT);
        return FRAMEBUFFER
      })
    } else {
      return null
    }
  }

  function parseViewportScissor (options, framebuffer, env) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    function parseBox (param) {
      if (param in staticOptions) {
        var box = staticOptions[param];
        check$1.commandType(box, 'object', 'invalid ' + param, env.commandStr);

        var isStatic = true;
        var x = box.x | 0;
        var y = box.y | 0;
        var w, h;
        if ('width' in box) {
          w = box.width | 0;
          check$1.command(w >= 0, 'invalid ' + param, env.commandStr);
        } else {
          isStatic = false;
        }
        if ('height' in box) {
          h = box.height | 0;
          check$1.command(h >= 0, 'invalid ' + param, env.commandStr);
        } else {
          isStatic = false;
        }

        return new Declaration(
          !isStatic && framebuffer && framebuffer.thisDep,
          !isStatic && framebuffer && framebuffer.contextDep,
          !isStatic && framebuffer && framebuffer.propDep,
          function (env, scope) {
            var CONTEXT = env.shared.context;
            var BOX_W = w;
            if (!('width' in box)) {
              BOX_W = scope.def(CONTEXT, '.', S_FRAMEBUFFER_WIDTH, '-', x);
            }
            var BOX_H = h;
            if (!('height' in box)) {
              BOX_H = scope.def(CONTEXT, '.', S_FRAMEBUFFER_HEIGHT, '-', y);
            }
            return [x, y, BOX_W, BOX_H]
          })
      } else if (param in dynamicOptions) {
        var dynBox = dynamicOptions[param];
        var result = createDynamicDecl(dynBox, function (env, scope) {
          var BOX = env.invoke(scope, dynBox);

          check$1.optional(function () {
            env.assert(scope,
              BOX + '&&typeof ' + BOX + '==="object"',
              'invalid ' + param);
          });

          var CONTEXT = env.shared.context;
          var BOX_X = scope.def(BOX, '.x|0');
          var BOX_Y = scope.def(BOX, '.y|0');
          var BOX_W = scope.def(
            '"width" in ', BOX, '?', BOX, '.width|0:',
            '(', CONTEXT, '.', S_FRAMEBUFFER_WIDTH, '-', BOX_X, ')');
          var BOX_H = scope.def(
            '"height" in ', BOX, '?', BOX, '.height|0:',
            '(', CONTEXT, '.', S_FRAMEBUFFER_HEIGHT, '-', BOX_Y, ')');

          check$1.optional(function () {
            env.assert(scope,
              BOX_W + '>=0&&' +
              BOX_H + '>=0',
              'invalid ' + param);
          });

          return [BOX_X, BOX_Y, BOX_W, BOX_H]
        });
        if (framebuffer) {
          result.thisDep = result.thisDep || framebuffer.thisDep;
          result.contextDep = result.contextDep || framebuffer.contextDep;
          result.propDep = result.propDep || framebuffer.propDep;
        }
        return result
      } else if (framebuffer) {
        return new Declaration(
          framebuffer.thisDep,
          framebuffer.contextDep,
          framebuffer.propDep,
          function (env, scope) {
            var CONTEXT = env.shared.context;
            return [
              0, 0,
              scope.def(CONTEXT, '.', S_FRAMEBUFFER_WIDTH),
              scope.def(CONTEXT, '.', S_FRAMEBUFFER_HEIGHT)]
          })
      } else {
        return null
      }
    }

    var viewport = parseBox(S_VIEWPORT);

    if (viewport) {
      var prevViewport = viewport;
      viewport = new Declaration(
        viewport.thisDep,
        viewport.contextDep,
        viewport.propDep,
        function (env, scope) {
          var VIEWPORT = prevViewport.append(env, scope);
          var CONTEXT = env.shared.context;
          scope.set(
            CONTEXT,
            '.' + S_VIEWPORT_WIDTH,
            VIEWPORT[2]);
          scope.set(
            CONTEXT,
            '.' + S_VIEWPORT_HEIGHT,
            VIEWPORT[3]);
          return VIEWPORT
        });
    }

    return {
      viewport: viewport,
      scissor_box: parseBox(S_SCISSOR_BOX)
    }
  }

  function parseProgram (options) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    function parseShader (name) {
      if (name in staticOptions) {
        var id = stringStore.id(staticOptions[name]);
        check$1.optional(function () {
          shaderState.shader(shaderType[name], id, check$1.guessCommand());
        });
        var result = createStaticDecl(function () {
          return id
        });
        result.id = id;
        return result
      } else if (name in dynamicOptions) {
        var dyn = dynamicOptions[name];
        return createDynamicDecl(dyn, function (env, scope) {
          var str = env.invoke(scope, dyn);
          var id = scope.def(env.shared.strings, '.id(', str, ')');
          check$1.optional(function () {
            scope(
              env.shared.shader, '.shader(',
              shaderType[name], ',',
              id, ',',
              env.command, ');');
          });
          return id
        })
      }
      return null
    }

    var frag = parseShader(S_FRAG);
    var vert = parseShader(S_VERT);

    var program = null;
    var progVar;
    if (isStatic(frag) && isStatic(vert)) {
      program = shaderState.program(vert.id, frag.id);
      progVar = createStaticDecl(function (env, scope) {
        return env.link(program)
      });
    } else {
      progVar = new Declaration(
        (frag && frag.thisDep) || (vert && vert.thisDep),
        (frag && frag.contextDep) || (vert && vert.contextDep),
        (frag && frag.propDep) || (vert && vert.propDep),
        function (env, scope) {
          var SHADER_STATE = env.shared.shader;
          var fragId;
          if (frag) {
            fragId = frag.append(env, scope);
          } else {
            fragId = scope.def(SHADER_STATE, '.', S_FRAG);
          }
          var vertId;
          if (vert) {
            vertId = vert.append(env, scope);
          } else {
            vertId = scope.def(SHADER_STATE, '.', S_VERT);
          }
          var progDef = SHADER_STATE + '.program(' + vertId + ',' + fragId;
          check$1.optional(function () {
            progDef += ',' + env.command;
          });
          return scope.def(progDef + ')')
        });
    }

    return {
      frag: frag,
      vert: vert,
      progVar: progVar,
      program: program
    }
  }

  function parseDraw (options, env) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    function parseElements () {
      if (S_ELEMENTS in staticOptions) {
        var elements = staticOptions[S_ELEMENTS];
        if (isBufferArgs(elements)) {
          elements = elementState.getElements(elementState.create(elements, true));
        } else if (elements) {
          elements = elementState.getElements(elements);
          check$1.command(elements, 'invalid elements', env.commandStr);
        }
        var result = createStaticDecl(function (env, scope) {
          if (elements) {
            var result = env.link(elements);
            env.ELEMENTS = result;
            return result
          }
          env.ELEMENTS = null;
          return null
        });
        result.value = elements;
        return result
      } else if (S_ELEMENTS in dynamicOptions) {
        var dyn = dynamicOptions[S_ELEMENTS];
        return createDynamicDecl(dyn, function (env, scope) {
          var shared = env.shared;

          var IS_BUFFER_ARGS = shared.isBufferArgs;
          var ELEMENT_STATE = shared.elements;

          var elementDefn = env.invoke(scope, dyn);
          var elements = scope.def('null');
          var elementStream = scope.def(IS_BUFFER_ARGS, '(', elementDefn, ')');

          var ifte = env.cond(elementStream)
            .then(elements, '=', ELEMENT_STATE, '.createStream(', elementDefn, ');')
            .else(elements, '=', ELEMENT_STATE, '.getElements(', elementDefn, ');');

          check$1.optional(function () {
            env.assert(ifte.else,
              '!' + elementDefn + '||' + elements,
              'invalid elements');
          });

          scope.entry(ifte);
          scope.exit(
            env.cond(elementStream)
              .then(ELEMENT_STATE, '.destroyStream(', elements, ');'));

          env.ELEMENTS = elements;

          return elements
        })
      }

      return null
    }

    var elements = parseElements();

    function parsePrimitive () {
      if (S_PRIMITIVE in staticOptions) {
        var primitive = staticOptions[S_PRIMITIVE];
        check$1.commandParameter(primitive, primTypes, 'invalid primitve', env.commandStr);
        return createStaticDecl(function (env, scope) {
          return primTypes[primitive]
        })
      } else if (S_PRIMITIVE in dynamicOptions) {
        var dynPrimitive = dynamicOptions[S_PRIMITIVE];
        return createDynamicDecl(dynPrimitive, function (env, scope) {
          var PRIM_TYPES = env.constants.primTypes;
          var prim = env.invoke(scope, dynPrimitive);
          check$1.optional(function () {
            env.assert(scope,
              prim + ' in ' + PRIM_TYPES,
              'invalid primitive, must be one of ' + Object.keys(primTypes));
          });
          return scope.def(PRIM_TYPES, '[', prim, ']')
        })
      } else if (elements) {
        if (isStatic(elements)) {
          if (elements.value) {
            return createStaticDecl(function (env, scope) {
              return scope.def(env.ELEMENTS, '.primType')
            })
          } else {
            return createStaticDecl(function () {
              return GL_TRIANGLES$1
            })
          }
        } else {
          return new Declaration(
            elements.thisDep,
            elements.contextDep,
            elements.propDep,
            function (env, scope) {
              var elements = env.ELEMENTS;
              return scope.def(elements, '?', elements, '.primType:', GL_TRIANGLES$1)
            })
        }
      }
      return null
    }

    function parseParam (param, isOffset) {
      if (param in staticOptions) {
        var value = staticOptions[param] | 0;
        check$1.command(!isOffset || value >= 0, 'invalid ' + param, env.commandStr);
        return createStaticDecl(function (env, scope) {
          if (isOffset) {
            env.OFFSET = value;
          }
          return value
        })
      } else if (param in dynamicOptions) {
        var dynValue = dynamicOptions[param];
        return createDynamicDecl(dynValue, function (env, scope) {
          var result = env.invoke(scope, dynValue);
          if (isOffset) {
            env.OFFSET = result;
            check$1.optional(function () {
              env.assert(scope,
                result + '>=0',
                'invalid ' + param);
            });
          }
          return result
        })
      } else if (isOffset && elements) {
        return createStaticDecl(function (env, scope) {
          env.OFFSET = '0';
          return 0
        })
      }
      return null
    }

    var OFFSET = parseParam(S_OFFSET, true);

    function parseVertCount () {
      if (S_COUNT in staticOptions) {
        var count = staticOptions[S_COUNT] | 0;
        check$1.command(
          typeof count === 'number' && count >= 0, 'invalid vertex count', env.commandStr);
        return createStaticDecl(function () {
          return count
        })
      } else if (S_COUNT in dynamicOptions) {
        var dynCount = dynamicOptions[S_COUNT];
        return createDynamicDecl(dynCount, function (env, scope) {
          var result = env.invoke(scope, dynCount);
          check$1.optional(function () {
            env.assert(scope,
              'typeof ' + result + '==="number"&&' +
              result + '>=0&&' +
              result + '===(' + result + '|0)',
              'invalid vertex count');
          });
          return result
        })
      } else if (elements) {
        if (isStatic(elements)) {
          if (elements) {
            if (OFFSET) {
              return new Declaration(
                OFFSET.thisDep,
                OFFSET.contextDep,
                OFFSET.propDep,
                function (env, scope) {
                  var result = scope.def(
                    env.ELEMENTS, '.vertCount-', env.OFFSET);

                  check$1.optional(function () {
                    env.assert(scope,
                      result + '>=0',
                      'invalid vertex offset/element buffer too small');
                  });

                  return result
                })
            } else {
              return createStaticDecl(function (env, scope) {
                return scope.def(env.ELEMENTS, '.vertCount')
              })
            }
          } else {
            var result = createStaticDecl(function () {
              return -1
            });
            check$1.optional(function () {
              result.MISSING = true;
            });
            return result
          }
        } else {
          var variable = new Declaration(
            elements.thisDep || OFFSET.thisDep,
            elements.contextDep || OFFSET.contextDep,
            elements.propDep || OFFSET.propDep,
            function (env, scope) {
              var elements = env.ELEMENTS;
              if (env.OFFSET) {
                return scope.def(elements, '?', elements, '.vertCount-',
                  env.OFFSET, ':-1')
              }
              return scope.def(elements, '?', elements, '.vertCount:-1')
            });
          check$1.optional(function () {
            variable.DYNAMIC = true;
          });
          return variable
        }
      }
      return null
    }

    return {
      elements: elements,
      primitive: parsePrimitive(),
      count: parseVertCount(),
      instances: parseParam(S_INSTANCES, false),
      offset: OFFSET
    }
  }

  function parseGLState (options, env) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    var STATE = {};

    GL_STATE_NAMES.forEach(function (prop) {
      var param = propName(prop);

      function parseParam (parseStatic, parseDynamic) {
        if (prop in staticOptions) {
          var value = parseStatic(staticOptions[prop]);
          STATE[param] = createStaticDecl(function () {
            return value
          });
        } else if (prop in dynamicOptions) {
          var dyn = dynamicOptions[prop];
          STATE[param] = createDynamicDecl(dyn, function (env, scope) {
            return parseDynamic(env, scope, env.invoke(scope, dyn))
          });
        }
      }

      switch (prop) {
        case S_CULL_ENABLE:
        case S_BLEND_ENABLE:
        case S_DITHER:
        case S_STENCIL_ENABLE:
        case S_DEPTH_ENABLE:
        case S_SCISSOR_ENABLE:
        case S_POLYGON_OFFSET_ENABLE:
        case S_SAMPLE_ALPHA:
        case S_SAMPLE_ENABLE:
        case S_DEPTH_MASK:
          return parseParam(
            function (value) {
              check$1.commandType(value, 'boolean', prop, env.commandStr);
              return value
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  'typeof ' + value + '==="boolean"',
                  'invalid flag ' + prop, env.commandStr);
              });
              return value
            })

        case S_DEPTH_FUNC:
          return parseParam(
            function (value) {
              check$1.commandParameter(value, compareFuncs, 'invalid ' + prop, env.commandStr);
              return compareFuncs[value]
            },
            function (env, scope, value) {
              var COMPARE_FUNCS = env.constants.compareFuncs;
              check$1.optional(function () {
                env.assert(scope,
                  value + ' in ' + COMPARE_FUNCS,
                  'invalid ' + prop + ', must be one of ' + Object.keys(compareFuncs));
              });
              return scope.def(COMPARE_FUNCS, '[', value, ']')
            })

        case S_DEPTH_RANGE:
          return parseParam(
            function (value) {
              check$1.command(
                isArrayLike(value) &&
                value.length === 2 &&
                typeof value[0] === 'number' &&
                typeof value[1] === 'number' &&
                value[0] <= value[1],
                'depth range is 2d array',
                env.commandStr);
              return value
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  env.shared.isArrayLike + '(' + value + ')&&' +
                  value + '.length===2&&' +
                  'typeof ' + value + '[0]==="number"&&' +
                  'typeof ' + value + '[1]==="number"&&' +
                  value + '[0]<=' + value + '[1]',
                  'depth range must be a 2d array');
              });

              var Z_NEAR = scope.def('+', value, '[0]');
              var Z_FAR = scope.def('+', value, '[1]');
              return [Z_NEAR, Z_FAR]
            })

        case S_BLEND_FUNC:
          return parseParam(
            function (value) {
              check$1.commandType(value, 'object', 'blend.func', env.commandStr);
              var srcRGB = ('srcRGB' in value ? value.srcRGB : value.src);
              var srcAlpha = ('srcAlpha' in value ? value.srcAlpha : value.src);
              var dstRGB = ('dstRGB' in value ? value.dstRGB : value.dst);
              var dstAlpha = ('dstAlpha' in value ? value.dstAlpha : value.dst);
              check$1.commandParameter(srcRGB, blendFuncs, param + '.srcRGB', env.commandStr);
              check$1.commandParameter(srcAlpha, blendFuncs, param + '.srcAlpha', env.commandStr);
              check$1.commandParameter(dstRGB, blendFuncs, param + '.dstRGB', env.commandStr);
              check$1.commandParameter(dstAlpha, blendFuncs, param + '.dstAlpha', env.commandStr);

              check$1.command(
                (invalidBlendCombinations.indexOf(srcRGB + ', ' + dstRGB) === -1),
                'unallowed blending combination (srcRGB, dstRGB) = (' + srcRGB + ', ' + dstRGB + ')', env.commandStr);

              return [
                blendFuncs[srcRGB],
                blendFuncs[dstRGB],
                blendFuncs[srcAlpha],
                blendFuncs[dstAlpha]
              ]
            },
            function (env, scope, value) {
              var BLEND_FUNCS = env.constants.blendFuncs;

              check$1.optional(function () {
                env.assert(scope,
                  value + '&&typeof ' + value + '==="object"',
                  'invalid blend func, must be an object');
              });

              function read (prefix, suffix) {
                var func = scope.def(
                  '"', prefix, suffix, '" in ', value,
                  '?', value, '.', prefix, suffix,
                  ':', value, '.', prefix);

                check$1.optional(function () {
                  env.assert(scope,
                    func + ' in ' + BLEND_FUNCS,
                    'invalid ' + prop + '.' + prefix + suffix + ', must be one of ' + Object.keys(blendFuncs));
                });

                return func
              }

              var srcRGB = read('src', 'RGB');
              var dstRGB = read('dst', 'RGB');

              check$1.optional(function () {
                var INVALID_BLEND_COMBINATIONS = env.constants.invalidBlendCombinations;

                env.assert(scope,
                           INVALID_BLEND_COMBINATIONS +
                           '.indexOf(' + srcRGB + '+", "+' + dstRGB + ') === -1 ',
                           'unallowed blending combination for (srcRGB, dstRGB)'
                          );
              });

              var SRC_RGB = scope.def(BLEND_FUNCS, '[', srcRGB, ']');
              var SRC_ALPHA = scope.def(BLEND_FUNCS, '[', read('src', 'Alpha'), ']');
              var DST_RGB = scope.def(BLEND_FUNCS, '[', dstRGB, ']');
              var DST_ALPHA = scope.def(BLEND_FUNCS, '[', read('dst', 'Alpha'), ']');

              return [SRC_RGB, DST_RGB, SRC_ALPHA, DST_ALPHA]
            })

        case S_BLEND_EQUATION:
          return parseParam(
            function (value) {
              if (typeof value === 'string') {
                check$1.commandParameter(value, blendEquations, 'invalid ' + prop, env.commandStr);
                return [
                  blendEquations[value],
                  blendEquations[value]
                ]
              } else if (typeof value === 'object') {
                check$1.commandParameter(
                  value.rgb, blendEquations, prop + '.rgb', env.commandStr);
                check$1.commandParameter(
                  value.alpha, blendEquations, prop + '.alpha', env.commandStr);
                return [
                  blendEquations[value.rgb],
                  blendEquations[value.alpha]
                ]
              } else {
                check$1.commandRaise('invalid blend.equation', env.commandStr);
              }
            },
            function (env, scope, value) {
              var BLEND_EQUATIONS = env.constants.blendEquations;

              var RGB = scope.def();
              var ALPHA = scope.def();

              var ifte = env.cond('typeof ', value, '==="string"');

              check$1.optional(function () {
                function checkProp (block, name, value) {
                  env.assert(block,
                    value + ' in ' + BLEND_EQUATIONS,
                    'invalid ' + name + ', must be one of ' + Object.keys(blendEquations));
                }
                checkProp(ifte.then, prop, value);

                env.assert(ifte.else,
                  value + '&&typeof ' + value + '==="object"',
                  'invalid ' + prop);
                checkProp(ifte.else, prop + '.rgb', value + '.rgb');
                checkProp(ifte.else, prop + '.alpha', value + '.alpha');
              });

              ifte.then(
                RGB, '=', ALPHA, '=', BLEND_EQUATIONS, '[', value, '];');
              ifte.else(
                RGB, '=', BLEND_EQUATIONS, '[', value, '.rgb];',
                ALPHA, '=', BLEND_EQUATIONS, '[', value, '.alpha];');

              scope(ifte);

              return [RGB, ALPHA]
            })

        case S_BLEND_COLOR:
          return parseParam(
            function (value) {
              check$1.command(
                isArrayLike(value) &&
                value.length === 4,
                'blend.color must be a 4d array', env.commandStr);
              return loop(4, function (i) {
                return +value[i]
              })
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  env.shared.isArrayLike + '(' + value + ')&&' +
                  value + '.length===4',
                  'blend.color must be a 4d array');
              });
              return loop(4, function (i) {
                return scope.def('+', value, '[', i, ']')
              })
            })

        case S_STENCIL_MASK:
          return parseParam(
            function (value) {
              check$1.commandType(value, 'number', param, env.commandStr);
              return value | 0
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  'typeof ' + value + '==="number"',
                  'invalid stencil.mask');
              });
              return scope.def(value, '|0')
            })

        case S_STENCIL_FUNC:
          return parseParam(
            function (value) {
              check$1.commandType(value, 'object', param, env.commandStr);
              var cmp = value.cmp || 'keep';
              var ref = value.ref || 0;
              var mask = 'mask' in value ? value.mask : -1;
              check$1.commandParameter(cmp, compareFuncs, prop + '.cmp', env.commandStr);
              check$1.commandType(ref, 'number', prop + '.ref', env.commandStr);
              check$1.commandType(mask, 'number', prop + '.mask', env.commandStr);
              return [
                compareFuncs[cmp],
                ref,
                mask
              ]
            },
            function (env, scope, value) {
              var COMPARE_FUNCS = env.constants.compareFuncs;
              check$1.optional(function () {
                function assert () {
                  env.assert(scope,
                    Array.prototype.join.call(arguments, ''),
                    'invalid stencil.func');
                }
                assert(value + '&&typeof ', value, '==="object"');
                assert('!("cmp" in ', value, ')||(',
                  value, '.cmp in ', COMPARE_FUNCS, ')');
              });
              var cmp = scope.def(
                '"cmp" in ', value,
                '?', COMPARE_FUNCS, '[', value, '.cmp]',
                ':', GL_KEEP);
              var ref = scope.def(value, '.ref|0');
              var mask = scope.def(
                '"mask" in ', value,
                '?', value, '.mask|0:-1');
              return [cmp, ref, mask]
            })

        case S_STENCIL_OPFRONT:
        case S_STENCIL_OPBACK:
          return parseParam(
            function (value) {
              check$1.commandType(value, 'object', param, env.commandStr);
              var fail = value.fail || 'keep';
              var zfail = value.zfail || 'keep';
              var zpass = value.zpass || 'keep';
              check$1.commandParameter(fail, stencilOps, prop + '.fail', env.commandStr);
              check$1.commandParameter(zfail, stencilOps, prop + '.zfail', env.commandStr);
              check$1.commandParameter(zpass, stencilOps, prop + '.zpass', env.commandStr);
              return [
                prop === S_STENCIL_OPBACK ? GL_BACK : GL_FRONT,
                stencilOps[fail],
                stencilOps[zfail],
                stencilOps[zpass]
              ]
            },
            function (env, scope, value) {
              var STENCIL_OPS = env.constants.stencilOps;

              check$1.optional(function () {
                env.assert(scope,
                  value + '&&typeof ' + value + '==="object"',
                  'invalid ' + prop);
              });

              function read (name) {
                check$1.optional(function () {
                  env.assert(scope,
                    '!("' + name + '" in ' + value + ')||' +
                    '(' + value + '.' + name + ' in ' + STENCIL_OPS + ')',
                    'invalid ' + prop + '.' + name + ', must be one of ' + Object.keys(stencilOps));
                });

                return scope.def(
                  '"', name, '" in ', value,
                  '?', STENCIL_OPS, '[', value, '.', name, ']:',
                  GL_KEEP)
              }

              return [
                prop === S_STENCIL_OPBACK ? GL_BACK : GL_FRONT,
                read('fail'),
                read('zfail'),
                read('zpass')
              ]
            })

        case S_POLYGON_OFFSET_OFFSET:
          return parseParam(
            function (value) {
              check$1.commandType(value, 'object', param, env.commandStr);
              var factor = value.factor | 0;
              var units = value.units | 0;
              check$1.commandType(factor, 'number', param + '.factor', env.commandStr);
              check$1.commandType(units, 'number', param + '.units', env.commandStr);
              return [factor, units]
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  value + '&&typeof ' + value + '==="object"',
                  'invalid ' + prop);
              });

              var FACTOR = scope.def(value, '.factor|0');
              var UNITS = scope.def(value, '.units|0');

              return [FACTOR, UNITS]
            })

        case S_CULL_FACE:
          return parseParam(
            function (value) {
              var face = 0;
              if (value === 'front') {
                face = GL_FRONT;
              } else if (value === 'back') {
                face = GL_BACK;
              }
              check$1.command(!!face, param, env.commandStr);
              return face
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  value + '==="front"||' +
                  value + '==="back"',
                  'invalid cull.face');
              });
              return scope.def(value, '==="front"?', GL_FRONT, ':', GL_BACK)
            })

        case S_LINE_WIDTH:
          return parseParam(
            function (value) {
              check$1.command(
                typeof value === 'number' &&
                value >= limits.lineWidthDims[0] &&
                value <= limits.lineWidthDims[1],
                'invalid line width, must positive number between ' +
                limits.lineWidthDims[0] + ' and ' + limits.lineWidthDims[1], env.commandStr);
              return value
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  'typeof ' + value + '==="number"&&' +
                  value + '>=' + limits.lineWidthDims[0] + '&&' +
                  value + '<=' + limits.lineWidthDims[1],
                  'invalid line width');
              });

              return value
            })

        case S_FRONT_FACE:
          return parseParam(
            function (value) {
              check$1.commandParameter(value, orientationType, param, env.commandStr);
              return orientationType[value]
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  value + '==="cw"||' +
                  value + '==="ccw"',
                  'invalid frontFace, must be one of cw,ccw');
              });
              return scope.def(value + '==="cw"?' + GL_CW + ':' + GL_CCW)
            })

        case S_COLOR_MASK:
          return parseParam(
            function (value) {
              check$1.command(
                isArrayLike(value) && value.length === 4,
                'color.mask must be length 4 array', env.commandStr);
              return value.map(function (v) { return !!v })
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  env.shared.isArrayLike + '(' + value + ')&&' +
                  value + '.length===4',
                  'invalid color.mask');
              });
              return loop(4, function (i) {
                return '!!' + value + '[' + i + ']'
              })
            })

        case S_SAMPLE_COVERAGE:
          return parseParam(
            function (value) {
              check$1.command(typeof value === 'object' && value, param, env.commandStr);
              var sampleValue = 'value' in value ? value.value : 1;
              var sampleInvert = !!value.invert;
              check$1.command(
                typeof sampleValue === 'number' &&
                sampleValue >= 0 && sampleValue <= 1,
                'sample.coverage.value must be a number between 0 and 1', env.commandStr);
              return [sampleValue, sampleInvert]
            },
            function (env, scope, value) {
              check$1.optional(function () {
                env.assert(scope,
                  value + '&&typeof ' + value + '==="object"',
                  'invalid sample.coverage');
              });
              var VALUE = scope.def(
                '"value" in ', value, '?+', value, '.value:1');
              var INVERT = scope.def('!!', value, '.invert');
              return [VALUE, INVERT]
            })
      }
    });

    return STATE
  }

  function parseUniforms (uniforms, env) {
    var staticUniforms = uniforms.static;
    var dynamicUniforms = uniforms.dynamic;

    var UNIFORMS = {};

    Object.keys(staticUniforms).forEach(function (name) {
      var value = staticUniforms[name];
      var result;
      if (typeof value === 'number' ||
          typeof value === 'boolean') {
        result = createStaticDecl(function () {
          return value
        });
      } else if (typeof value === 'function') {
        var reglType = value._reglType;
        if (reglType === 'texture2d' ||
            reglType === 'textureCube') {
          result = createStaticDecl(function (env) {
            return env.link(value)
          });
        } else if (reglType === 'framebuffer' ||
                   reglType === 'framebufferCube') {
          check$1.command(value.color.length > 0,
            'missing color attachment for framebuffer sent to uniform "' + name + '"', env.commandStr);
          result = createStaticDecl(function (env) {
            return env.link(value.color[0])
          });
        } else {
          check$1.commandRaise('invalid data for uniform "' + name + '"', env.commandStr);
        }
      } else if (isArrayLike(value)) {
        result = createStaticDecl(function (env) {
          var ITEM = env.global.def('[',
            loop(value.length, function (i) {
              check$1.command(
                typeof value[i] === 'number' ||
                typeof value[i] === 'boolean',
                'invalid uniform ' + name, env.commandStr);
              return value[i]
            }), ']');
          return ITEM
        });
      } else {
        check$1.commandRaise('invalid or missing data for uniform "' + name + '"', env.commandStr);
      }
      result.value = value;
      UNIFORMS[name] = result;
    });

    Object.keys(dynamicUniforms).forEach(function (key) {
      var dyn = dynamicUniforms[key];
      UNIFORMS[key] = createDynamicDecl(dyn, function (env, scope) {
        return env.invoke(scope, dyn)
      });
    });

    return UNIFORMS
  }

  function parseAttributes (attributes, env) {
    var staticAttributes = attributes.static;
    var dynamicAttributes = attributes.dynamic;

    var attributeDefs = {};

    Object.keys(staticAttributes).forEach(function (attribute) {
      var value = staticAttributes[attribute];
      var id = stringStore.id(attribute);

      var record = new AttributeRecord();
      if (isBufferArgs(value)) {
        record.state = ATTRIB_STATE_POINTER;
        record.buffer = bufferState.getBuffer(
          bufferState.create(value, GL_ARRAY_BUFFER$1, false, true));
        record.type = 0;
      } else {
        var buffer = bufferState.getBuffer(value);
        if (buffer) {
          record.state = ATTRIB_STATE_POINTER;
          record.buffer = buffer;
          record.type = 0;
        } else {
          check$1.command(typeof value === 'object' && value,
            'invalid data for attribute ' + attribute, env.commandStr);
          if (value.constant) {
            var constant = value.constant;
            record.buffer = 'null';
            record.state = ATTRIB_STATE_CONSTANT;
            if (typeof constant === 'number') {
              record.x = constant;
            } else {
              check$1.command(
                isArrayLike(constant) &&
                constant.length > 0 &&
                constant.length <= 4,
                'invalid constant for attribute ' + attribute, env.commandStr);
              CUTE_COMPONENTS.forEach(function (c, i) {
                if (i < constant.length) {
                  record[c] = constant[i];
                }
              });
            }
          } else {
            if (isBufferArgs(value.buffer)) {
              buffer = bufferState.getBuffer(
                bufferState.create(value.buffer, GL_ARRAY_BUFFER$1, false, true));
            } else {
              buffer = bufferState.getBuffer(value.buffer);
            }
            check$1.command(!!buffer, 'missing buffer for attribute "' + attribute + '"', env.commandStr);

            var offset = value.offset | 0;
            check$1.command(offset >= 0,
              'invalid offset for attribute "' + attribute + '"', env.commandStr);

            var stride = value.stride | 0;
            check$1.command(stride >= 0 && stride < 256,
              'invalid stride for attribute "' + attribute + '", must be integer betweeen [0, 255]', env.commandStr);

            var size = value.size | 0;
            check$1.command(!('size' in value) || (size > 0 && size <= 4),
              'invalid size for attribute "' + attribute + '", must be 1,2,3,4', env.commandStr);

            var normalized = !!value.normalized;

            var type = 0;
            if ('type' in value) {
              check$1.commandParameter(
                value.type, glTypes,
                'invalid type for attribute ' + attribute, env.commandStr);
              type = glTypes[value.type];
            }

            var divisor = value.divisor | 0;
            if ('divisor' in value) {
              check$1.command(divisor === 0 || extInstancing,
                'cannot specify divisor for attribute "' + attribute + '", instancing not supported', env.commandStr);
              check$1.command(divisor >= 0,
                'invalid divisor for attribute "' + attribute + '"', env.commandStr);
            }

            check$1.optional(function () {
              var command = env.commandStr;

              var VALID_KEYS = [
                'buffer',
                'offset',
                'divisor',
                'normalized',
                'type',
                'size',
                'stride'
              ];

              Object.keys(value).forEach(function (prop) {
                check$1.command(
                  VALID_KEYS.indexOf(prop) >= 0,
                  'unknown parameter "' + prop + '" for attribute pointer "' + attribute + '" (valid parameters are ' + VALID_KEYS + ')',
                  command);
              });
            });

            record.buffer = buffer;
            record.state = ATTRIB_STATE_POINTER;
            record.size = size;
            record.normalized = normalized;
            record.type = type || buffer.dtype;
            record.offset = offset;
            record.stride = stride;
            record.divisor = divisor;
          }
        }
      }

      attributeDefs[attribute] = createStaticDecl(function (env, scope) {
        var cache = env.attribCache;
        if (id in cache) {
          return cache[id]
        }
        var result = {
          isStream: false
        };
        Object.keys(record).forEach(function (key) {
          result[key] = record[key];
        });
        if (record.buffer) {
          result.buffer = env.link(record.buffer);
          result.type = result.type || (result.buffer + '.dtype');
        }
        cache[id] = result;
        return result
      });
    });

    Object.keys(dynamicAttributes).forEach(function (attribute) {
      var dyn = dynamicAttributes[attribute];

      function appendAttributeCode (env, block) {
        var VALUE = env.invoke(block, dyn);

        var shared = env.shared;

        var IS_BUFFER_ARGS = shared.isBufferArgs;
        var BUFFER_STATE = shared.buffer;

        // Perform validation on attribute
        check$1.optional(function () {
          env.assert(block,
            VALUE + '&&(typeof ' + VALUE + '==="object"||typeof ' +
            VALUE + '==="function")&&(' +
            IS_BUFFER_ARGS + '(' + VALUE + ')||' +
            BUFFER_STATE + '.getBuffer(' + VALUE + ')||' +
            BUFFER_STATE + '.getBuffer(' + VALUE + '.buffer)||' +
            IS_BUFFER_ARGS + '(' + VALUE + '.buffer)||' +
            '("constant" in ' + VALUE +
            '&&(typeof ' + VALUE + '.constant==="number"||' +
            shared.isArrayLike + '(' + VALUE + '.constant))))',
            'invalid dynamic attribute "' + attribute + '"');
        });

        // allocate names for result
        var result = {
          isStream: block.def(false)
        };
        var defaultRecord = new AttributeRecord();
        defaultRecord.state = ATTRIB_STATE_POINTER;
        Object.keys(defaultRecord).forEach(function (key) {
          result[key] = block.def('' + defaultRecord[key]);
        });

        var BUFFER = result.buffer;
        var TYPE = result.type;
        block(
          'if(', IS_BUFFER_ARGS, '(', VALUE, ')){',
          result.isStream, '=true;',
          BUFFER, '=', BUFFER_STATE, '.createStream(', GL_ARRAY_BUFFER$1, ',', VALUE, ');',
          TYPE, '=', BUFFER, '.dtype;',
          '}else{',
          BUFFER, '=', BUFFER_STATE, '.getBuffer(', VALUE, ');',
          'if(', BUFFER, '){',
          TYPE, '=', BUFFER, '.dtype;',
          '}else if("constant" in ', VALUE, '){',
          result.state, '=', ATTRIB_STATE_CONSTANT, ';',
          'if(typeof ' + VALUE + '.constant === "number"){',
          result[CUTE_COMPONENTS[0]], '=', VALUE, '.constant;',
          CUTE_COMPONENTS.slice(1).map(function (n) {
            return result[n]
          }).join('='), '=0;',
          '}else{',
          CUTE_COMPONENTS.map(function (name, i) {
            return (
              result[name] + '=' + VALUE + '.constant.length>=' + i +
              '?' + VALUE + '.constant[' + i + ']:0;'
            )
          }).join(''),
          '}}else{',
          'if(', IS_BUFFER_ARGS, '(', VALUE, '.buffer)){',
          BUFFER, '=', BUFFER_STATE, '.createStream(', GL_ARRAY_BUFFER$1, ',', VALUE, '.buffer);',
          '}else{',
          BUFFER, '=', BUFFER_STATE, '.getBuffer(', VALUE, '.buffer);',
          '}',
          TYPE, '="type" in ', VALUE, '?',
          shared.glTypes, '[', VALUE, '.type]:', BUFFER, '.dtype;',
          result.normalized, '=!!', VALUE, '.normalized;');
        function emitReadRecord (name) {
          block(result[name], '=', VALUE, '.', name, '|0;');
        }
        emitReadRecord('size');
        emitReadRecord('offset');
        emitReadRecord('stride');
        emitReadRecord('divisor');

        block('}}');

        block.exit(
          'if(', result.isStream, '){',
          BUFFER_STATE, '.destroyStream(', BUFFER, ');',
          '}');

        return result
      }

      attributeDefs[attribute] = createDynamicDecl(dyn, appendAttributeCode);
    });

    return attributeDefs
  }

  function parseContext (context) {
    var staticContext = context.static;
    var dynamicContext = context.dynamic;
    var result = {};

    Object.keys(staticContext).forEach(function (name) {
      var value = staticContext[name];
      result[name] = createStaticDecl(function (env, scope) {
        if (typeof value === 'number' || typeof value === 'boolean') {
          return '' + value
        } else {
          return env.link(value)
        }
      });
    });

    Object.keys(dynamicContext).forEach(function (name) {
      var dyn = dynamicContext[name];
      result[name] = createDynamicDecl(dyn, function (env, scope) {
        return env.invoke(scope, dyn)
      });
    });

    return result
  }

  function parseArguments (options, attributes, uniforms, context, env) {
    var staticOptions = options.static;
    var dynamicOptions = options.dynamic;

    check$1.optional(function () {
      var KEY_NAMES = [
        S_FRAMEBUFFER,
        S_VERT,
        S_FRAG,
        S_ELEMENTS,
        S_PRIMITIVE,
        S_OFFSET,
        S_COUNT,
        S_INSTANCES,
        S_PROFILE
      ].concat(GL_STATE_NAMES);

      function checkKeys (dict) {
        Object.keys(dict).forEach(function (key) {
          check$1.command(
            KEY_NAMES.indexOf(key) >= 0,
            'unknown parameter "' + key + '"',
            env.commandStr);
        });
      }

      checkKeys(staticOptions);
      checkKeys(dynamicOptions);
    });

    var framebuffer = parseFramebuffer(options, env);
    var viewportAndScissor = parseViewportScissor(options, framebuffer, env);
    var draw = parseDraw(options, env);
    var state = parseGLState(options, env);
    var shader = parseProgram(options, env);

    function copyBox (name) {
      var defn = viewportAndScissor[name];
      if (defn) {
        state[name] = defn;
      }
    }
    copyBox(S_VIEWPORT);
    copyBox(propName(S_SCISSOR_BOX));

    var dirty = Object.keys(state).length > 0;

    var result = {
      framebuffer: framebuffer,
      draw: draw,
      shader: shader,
      state: state,
      dirty: dirty
    };

    result.profile = parseProfile(options, env);
    result.uniforms = parseUniforms(uniforms, env);
    result.attributes = parseAttributes(attributes, env);
    result.context = parseContext(context, env);
    return result
  }

  // ===================================================
  // ===================================================
  // COMMON UPDATE FUNCTIONS
  // ===================================================
  // ===================================================
  function emitContext (env, scope, context) {
    var shared = env.shared;
    var CONTEXT = shared.context;

    var contextEnter = env.scope();

    Object.keys(context).forEach(function (name) {
      scope.save(CONTEXT, '.' + name);
      var defn = context[name];
      contextEnter(CONTEXT, '.', name, '=', defn.append(env, scope), ';');
    });

    scope(contextEnter);
  }

  // ===================================================
  // ===================================================
  // COMMON DRAWING FUNCTIONS
  // ===================================================
  // ===================================================
  function emitPollFramebuffer (env, scope, framebuffer, skipCheck) {
    var shared = env.shared;

    var GL = shared.gl;
    var FRAMEBUFFER_STATE = shared.framebuffer;
    var EXT_DRAW_BUFFERS;
    if (extDrawBuffers) {
      EXT_DRAW_BUFFERS = scope.def(shared.extensions, '.webgl_draw_buffers');
    }

    var constants = env.constants;

    var DRAW_BUFFERS = constants.drawBuffer;
    var BACK_BUFFER = constants.backBuffer;

    var NEXT;
    if (framebuffer) {
      NEXT = framebuffer.append(env, scope);
    } else {
      NEXT = scope.def(FRAMEBUFFER_STATE, '.next');
    }

    if (!skipCheck) {
      scope('if(', NEXT, '!==', FRAMEBUFFER_STATE, '.cur){');
    }
    scope(
      'if(', NEXT, '){',
      GL, '.bindFramebuffer(', GL_FRAMEBUFFER$1, ',', NEXT, '.framebuffer);');
    if (extDrawBuffers) {
      scope(EXT_DRAW_BUFFERS, '.drawBuffersWEBGL(',
        DRAW_BUFFERS, '[', NEXT, '.colorAttachments.length]);');
    }
    scope('}else{',
      GL, '.bindFramebuffer(', GL_FRAMEBUFFER$1, ',null);');
    if (extDrawBuffers) {
      scope(EXT_DRAW_BUFFERS, '.drawBuffersWEBGL(', BACK_BUFFER, ');');
    }
    scope(
      '}',
      FRAMEBUFFER_STATE, '.cur=', NEXT, ';');
    if (!skipCheck) {
      scope('}');
    }
  }

  function emitPollState (env, scope, args) {
    var shared = env.shared;

    var GL = shared.gl;

    var CURRENT_VARS = env.current;
    var NEXT_VARS = env.next;
    var CURRENT_STATE = shared.current;
    var NEXT_STATE = shared.next;

    var block = env.cond(CURRENT_STATE, '.dirty');

    GL_STATE_NAMES.forEach(function (prop) {
      var param = propName(prop);
      if (param in args.state) {
        return
      }

      var NEXT, CURRENT;
      if (param in NEXT_VARS) {
        NEXT = NEXT_VARS[param];
        CURRENT = CURRENT_VARS[param];
        var parts = loop(currentState[param].length, function (i) {
          return block.def(NEXT, '[', i, ']')
        });
        block(env.cond(parts.map(function (p, i) {
          return p + '!==' + CURRENT + '[' + i + ']'
        }).join('||'))
          .then(
            GL, '.', GL_VARIABLES[param], '(', parts, ');',
            parts.map(function (p, i) {
              return CURRENT + '[' + i + ']=' + p
            }).join(';'), ';'));
      } else {
        NEXT = block.def(NEXT_STATE, '.', param);
        var ifte = env.cond(NEXT, '!==', CURRENT_STATE, '.', param);
        block(ifte);
        if (param in GL_FLAGS) {
          ifte(
            env.cond(NEXT)
                .then(GL, '.enable(', GL_FLAGS[param], ');')
                .else(GL, '.disable(', GL_FLAGS[param], ');'),
            CURRENT_STATE, '.', param, '=', NEXT, ';');
        } else {
          ifte(
            GL, '.', GL_VARIABLES[param], '(', NEXT, ');',
            CURRENT_STATE, '.', param, '=', NEXT, ';');
        }
      }
    });
    if (Object.keys(args.state).length === 0) {
      block(CURRENT_STATE, '.dirty=false;');
    }
    scope(block);
  }

  function emitSetOptions (env, scope, options, filter) {
    var shared = env.shared;
    var CURRENT_VARS = env.current;
    var CURRENT_STATE = shared.current;
    var GL = shared.gl;
    sortState(Object.keys(options)).forEach(function (param) {
      var defn = options[param];
      if (filter && !filter(defn)) {
        return
      }
      var variable = defn.append(env, scope);
      if (GL_FLAGS[param]) {
        var flag = GL_FLAGS[param];
        if (isStatic(defn)) {
          if (variable) {
            scope(GL, '.enable(', flag, ');');
          } else {
            scope(GL, '.disable(', flag, ');');
          }
        } else {
          scope(env.cond(variable)
            .then(GL, '.enable(', flag, ');')
            .else(GL, '.disable(', flag, ');'));
        }
        scope(CURRENT_STATE, '.', param, '=', variable, ';');
      } else if (isArrayLike(variable)) {
        var CURRENT = CURRENT_VARS[param];
        scope(
          GL, '.', GL_VARIABLES[param], '(', variable, ');',
          variable.map(function (v, i) {
            return CURRENT + '[' + i + ']=' + v
          }).join(';'), ';');
      } else {
        scope(
          GL, '.', GL_VARIABLES[param], '(', variable, ');',
          CURRENT_STATE, '.', param, '=', variable, ';');
      }
    });
  }

  function injectExtensions (env, scope) {
    if (extInstancing) {
      env.instancing = scope.def(
        env.shared.extensions, '.angle_instanced_arrays');
    }
  }

  function emitProfile (env, scope, args, useScope, incrementCounter) {
    var shared = env.shared;
    var STATS = env.stats;
    var CURRENT_STATE = shared.current;
    var TIMER = shared.timer;
    var profileArg = args.profile;

    function perfCounter () {
      if (typeof performance === 'undefined') {
        return 'Date.now()'
      } else {
        return 'performance.now()'
      }
    }

    var CPU_START, QUERY_COUNTER;
    function emitProfileStart (block) {
      CPU_START = scope.def();
      block(CPU_START, '=', perfCounter(), ';');
      if (typeof incrementCounter === 'string') {
        block(STATS, '.count+=', incrementCounter, ';');
      } else {
        block(STATS, '.count++;');
      }
      if (timer) {
        if (useScope) {
          QUERY_COUNTER = scope.def();
          block(QUERY_COUNTER, '=', TIMER, '.getNumPendingQueries();');
        } else {
          block(TIMER, '.beginQuery(', STATS, ');');
        }
      }
    }

    function emitProfileEnd (block) {
      block(STATS, '.cpuTime+=', perfCounter(), '-', CPU_START, ';');
      if (timer) {
        if (useScope) {
          block(TIMER, '.pushScopeStats(',
            QUERY_COUNTER, ',',
            TIMER, '.getNumPendingQueries(),',
            STATS, ');');
        } else {
          block(TIMER, '.endQuery();');
        }
      }
    }

    function scopeProfile (value) {
      var prev = scope.def(CURRENT_STATE, '.profile');
      scope(CURRENT_STATE, '.profile=', value, ';');
      scope.exit(CURRENT_STATE, '.profile=', prev, ';');
    }

    var USE_PROFILE;
    if (profileArg) {
      if (isStatic(profileArg)) {
        if (profileArg.enable) {
          emitProfileStart(scope);
          emitProfileEnd(scope.exit);
          scopeProfile('true');
        } else {
          scopeProfile('false');
        }
        return
      }
      USE_PROFILE = profileArg.append(env, scope);
      scopeProfile(USE_PROFILE);
    } else {
      USE_PROFILE = scope.def(CURRENT_STATE, '.profile');
    }

    var start = env.block();
    emitProfileStart(start);
    scope('if(', USE_PROFILE, '){', start, '}');
    var end = env.block();
    emitProfileEnd(end);
    scope.exit('if(', USE_PROFILE, '){', end, '}');
  }

  function emitAttributes (env, scope, args, attributes, filter) {
    var shared = env.shared;

    function typeLength (x) {
      switch (x) {
        case GL_FLOAT_VEC2:
        case GL_INT_VEC2:
        case GL_BOOL_VEC2:
          return 2
        case GL_FLOAT_VEC3:
        case GL_INT_VEC3:
        case GL_BOOL_VEC3:
          return 3
        case GL_FLOAT_VEC4:
        case GL_INT_VEC4:
        case GL_BOOL_VEC4:
          return 4
        default:
          return 1
      }
    }

    function emitBindAttribute (ATTRIBUTE, size, record) {
      var GL = shared.gl;

      var LOCATION = scope.def(ATTRIBUTE, '.location');
      var BINDING = scope.def(shared.attributes, '[', LOCATION, ']');

      var STATE = record.state;
      var BUFFER = record.buffer;
      var CONST_COMPONENTS = [
        record.x,
        record.y,
        record.z,
        record.w
      ];

      var COMMON_KEYS = [
        'buffer',
        'normalized',
        'offset',
        'stride'
      ];

      function emitBuffer () {
        scope(
          'if(!', BINDING, '.buffer){',
          GL, '.enableVertexAttribArray(', LOCATION, ');}');

        var TYPE = record.type;
        var SIZE;
        if (!record.size) {
          SIZE = size;
        } else {
          SIZE = scope.def(record.size, '||', size);
        }

        scope('if(',
          BINDING, '.type!==', TYPE, '||',
          BINDING, '.size!==', SIZE, '||',
          COMMON_KEYS.map(function (key) {
            return BINDING + '.' + key + '!==' + record[key]
          }).join('||'),
          '){',
          GL, '.bindBuffer(', GL_ARRAY_BUFFER$1, ',', BUFFER, '.buffer);',
          GL, '.vertexAttribPointer(', [
            LOCATION,
            SIZE,
            TYPE,
            record.normalized,
            record.stride,
            record.offset
          ], ');',
          BINDING, '.type=', TYPE, ';',
          BINDING, '.size=', SIZE, ';',
          COMMON_KEYS.map(function (key) {
            return BINDING + '.' + key + '=' + record[key] + ';'
          }).join(''),
          '}');

        if (extInstancing) {
          var DIVISOR = record.divisor;
          scope(
            'if(', BINDING, '.divisor!==', DIVISOR, '){',
            env.instancing, '.vertexAttribDivisorANGLE(', [LOCATION, DIVISOR], ');',
            BINDING, '.divisor=', DIVISOR, ';}');
        }
      }

      function emitConstant () {
        scope(
          'if(', BINDING, '.buffer){',
          GL, '.disableVertexAttribArray(', LOCATION, ');',
          '}if(', CUTE_COMPONENTS.map(function (c, i) {
            return BINDING + '.' + c + '!==' + CONST_COMPONENTS[i]
          }).join('||'), '){',
          GL, '.vertexAttrib4f(', LOCATION, ',', CONST_COMPONENTS, ');',
          CUTE_COMPONENTS.map(function (c, i) {
            return BINDING + '.' + c + '=' + CONST_COMPONENTS[i] + ';'
          }).join(''),
          '}');
      }

      if (STATE === ATTRIB_STATE_POINTER) {
        emitBuffer();
      } else if (STATE === ATTRIB_STATE_CONSTANT) {
        emitConstant();
      } else {
        scope('if(', STATE, '===', ATTRIB_STATE_POINTER, '){');
        emitBuffer();
        scope('}else{');
        emitConstant();
        scope('}');
      }
    }

    attributes.forEach(function (attribute) {
      var name = attribute.name;
      var arg = args.attributes[name];
      var record;
      if (arg) {
        if (!filter(arg)) {
          return
        }
        record = arg.append(env, scope);
      } else {
        if (!filter(SCOPE_DECL)) {
          return
        }
        var scopeAttrib = env.scopeAttrib(name);
        check$1.optional(function () {
          env.assert(scope,
            scopeAttrib + '.state',
            'missing attribute ' + name);
        });
        record = {};
        Object.keys(new AttributeRecord()).forEach(function (key) {
          record[key] = scope.def(scopeAttrib, '.', key);
        });
      }
      emitBindAttribute(
        env.link(attribute), typeLength(attribute.info.type), record);
    });
  }

  function emitUniforms (env, scope, args, uniforms, filter) {
    var shared = env.shared;
    var GL = shared.gl;

    var infix;
    for (var i = 0; i < uniforms.length; ++i) {
      var uniform = uniforms[i];
      var name = uniform.name;
      var type = uniform.info.type;
      var arg = args.uniforms[name];
      var UNIFORM = env.link(uniform);
      var LOCATION = UNIFORM + '.location';

      var VALUE;
      if (arg) {
        if (!filter(arg)) {
          continue
        }
        if (isStatic(arg)) {
          var value = arg.value;
          check$1.command(
            value !== null && typeof value !== 'undefined',
            'missing uniform "' + name + '"', env.commandStr);
          if (type === GL_SAMPLER_2D || type === GL_SAMPLER_CUBE) {
            check$1.command(
              typeof value === 'function' &&
              ((type === GL_SAMPLER_2D &&
                (value._reglType === 'texture2d' ||
                value._reglType === 'framebuffer')) ||
              (type === GL_SAMPLER_CUBE &&
                (value._reglType === 'textureCube' ||
                value._reglType === 'framebufferCube'))),
              'invalid texture for uniform ' + name, env.commandStr);
            var TEX_VALUE = env.link(value._texture || value.color[0]._texture);
            scope(GL, '.uniform1i(', LOCATION, ',', TEX_VALUE + '.bind());');
            scope.exit(TEX_VALUE, '.unbind();');
          } else if (
            type === GL_FLOAT_MAT2 ||
            type === GL_FLOAT_MAT3 ||
            type === GL_FLOAT_MAT4) {
            check$1.optional(function () {
              check$1.command(isArrayLike(value),
                'invalid matrix for uniform ' + name, env.commandStr);
              check$1.command(
                (type === GL_FLOAT_MAT2 && value.length === 4) ||
                (type === GL_FLOAT_MAT3 && value.length === 9) ||
                (type === GL_FLOAT_MAT4 && value.length === 16),
                'invalid length for matrix uniform ' + name, env.commandStr);
            });
            var MAT_VALUE = env.global.def('new Float32Array([' +
              Array.prototype.slice.call(value) + '])');
            var dim = 2;
            if (type === GL_FLOAT_MAT3) {
              dim = 3;
            } else if (type === GL_FLOAT_MAT4) {
              dim = 4;
            }
            scope(
              GL, '.uniformMatrix', dim, 'fv(',
              LOCATION, ',false,', MAT_VALUE, ');');
          } else {
            switch (type) {
              case GL_FLOAT$7:
                check$1.commandType(value, 'number', 'uniform ' + name, env.commandStr);
                infix = '1f';
                break
              case GL_FLOAT_VEC2:
                check$1.command(
                  isArrayLike(value) && value.length === 2,
                  'uniform ' + name, env.commandStr);
                infix = '2f';
                break
              case GL_FLOAT_VEC3:
                check$1.command(
                  isArrayLike(value) && value.length === 3,
                  'uniform ' + name, env.commandStr);
                infix = '3f';
                break
              case GL_FLOAT_VEC4:
                check$1.command(
                  isArrayLike(value) && value.length === 4,
                  'uniform ' + name, env.commandStr);
                infix = '4f';
                break
              case GL_BOOL:
                check$1.commandType(value, 'boolean', 'uniform ' + name, env.commandStr);
                infix = '1i';
                break
              case GL_INT$3:
                check$1.commandType(value, 'number', 'uniform ' + name, env.commandStr);
                infix = '1i';
                break
              case GL_BOOL_VEC2:
                check$1.command(
                  isArrayLike(value) && value.length === 2,
                  'uniform ' + name, env.commandStr);
                infix = '2i';
                break
              case GL_INT_VEC2:
                check$1.command(
                  isArrayLike(value) && value.length === 2,
                  'uniform ' + name, env.commandStr);
                infix = '2i';
                break
              case GL_BOOL_VEC3:
                check$1.command(
                  isArrayLike(value) && value.length === 3,
                  'uniform ' + name, env.commandStr);
                infix = '3i';
                break
              case GL_INT_VEC3:
                check$1.command(
                  isArrayLike(value) && value.length === 3,
                  'uniform ' + name, env.commandStr);
                infix = '3i';
                break
              case GL_BOOL_VEC4:
                check$1.command(
                  isArrayLike(value) && value.length === 4,
                  'uniform ' + name, env.commandStr);
                infix = '4i';
                break
              case GL_INT_VEC4:
                check$1.command(
                  isArrayLike(value) && value.length === 4,
                  'uniform ' + name, env.commandStr);
                infix = '4i';
                break
            }
            scope(GL, '.uniform', infix, '(', LOCATION, ',',
              isArrayLike(value) ? Array.prototype.slice.call(value) : value,
              ');');
          }
          continue
        } else {
          VALUE = arg.append(env, scope);
        }
      } else {
        if (!filter(SCOPE_DECL)) {
          continue
        }
        VALUE = scope.def(shared.uniforms, '[', stringStore.id(name), ']');
      }

      if (type === GL_SAMPLER_2D) {
        scope(
          'if(', VALUE, '&&', VALUE, '._reglType==="framebuffer"){',
          VALUE, '=', VALUE, '.color[0];',
          '}');
      } else if (type === GL_SAMPLER_CUBE) {
        scope(
          'if(', VALUE, '&&', VALUE, '._reglType==="framebufferCube"){',
          VALUE, '=', VALUE, '.color[0];',
          '}');
      }

      // perform type validation
      check$1.optional(function () {
        function check (pred, message) {
          env.assert(scope, pred,
            'bad data or missing for uniform "' + name + '".  ' + message);
        }

        function checkType (type) {
          check(
            'typeof ' + VALUE + '==="' + type + '"',
            'invalid type, expected ' + type);
        }

        function checkVector (n, type) {
          check(
            shared.isArrayLike + '(' + VALUE + ')&&' + VALUE + '.length===' + n,
            'invalid vector, should have length ' + n, env.commandStr);
        }

        function checkTexture (target) {
          check(
            'typeof ' + VALUE + '==="function"&&' +
            VALUE + '._reglType==="texture' +
            (target === GL_TEXTURE_2D$2 ? '2d' : 'Cube') + '"',
            'invalid texture type', env.commandStr);
        }

        switch (type) {
          case GL_INT$3:
            checkType('number');
            break
          case GL_INT_VEC2:
            checkVector(2, 'number');
            break
          case GL_INT_VEC3:
            checkVector(3, 'number');
            break
          case GL_INT_VEC4:
            checkVector(4, 'number');
            break
          case GL_FLOAT$7:
            checkType('number');
            break
          case GL_FLOAT_VEC2:
            checkVector(2, 'number');
            break
          case GL_FLOAT_VEC3:
            checkVector(3, 'number');
            break
          case GL_FLOAT_VEC4:
            checkVector(4, 'number');
            break
          case GL_BOOL:
            checkType('boolean');
            break
          case GL_BOOL_VEC2:
            checkVector(2, 'boolean');
            break
          case GL_BOOL_VEC3:
            checkVector(3, 'boolean');
            break
          case GL_BOOL_VEC4:
            checkVector(4, 'boolean');
            break
          case GL_FLOAT_MAT2:
            checkVector(4, 'number');
            break
          case GL_FLOAT_MAT3:
            checkVector(9, 'number');
            break
          case GL_FLOAT_MAT4:
            checkVector(16, 'number');
            break
          case GL_SAMPLER_2D:
            checkTexture(GL_TEXTURE_2D$2);
            break
          case GL_SAMPLER_CUBE:
            checkTexture(GL_TEXTURE_CUBE_MAP$1);
            break
        }
      });

      var unroll = 1;
      switch (type) {
        case GL_SAMPLER_2D:
        case GL_SAMPLER_CUBE:
          var TEX = scope.def(VALUE, '._texture');
          scope(GL, '.uniform1i(', LOCATION, ',', TEX, '.bind());');
          scope.exit(TEX, '.unbind();');
          continue

        case GL_INT$3:
        case GL_BOOL:
          infix = '1i';
          break

        case GL_INT_VEC2:
        case GL_BOOL_VEC2:
          infix = '2i';
          unroll = 2;
          break

        case GL_INT_VEC3:
        case GL_BOOL_VEC3:
          infix = '3i';
          unroll = 3;
          break

        case GL_INT_VEC4:
        case GL_BOOL_VEC4:
          infix = '4i';
          unroll = 4;
          break

        case GL_FLOAT$7:
          infix = '1f';
          break

        case GL_FLOAT_VEC2:
          infix = '2f';
          unroll = 2;
          break

        case GL_FLOAT_VEC3:
          infix = '3f';
          unroll = 3;
          break

        case GL_FLOAT_VEC4:
          infix = '4f';
          unroll = 4;
          break

        case GL_FLOAT_MAT2:
          infix = 'Matrix2fv';
          break

        case GL_FLOAT_MAT3:
          infix = 'Matrix3fv';
          break

        case GL_FLOAT_MAT4:
          infix = 'Matrix4fv';
          break
      }

      scope(GL, '.uniform', infix, '(', LOCATION, ',');
      if (infix.charAt(0) === 'M') {
        var matSize = Math.pow(type - GL_FLOAT_MAT2 + 2, 2);
        var STORAGE = env.global.def('new Float32Array(', matSize, ')');
        scope(
          'false,(Array.isArray(', VALUE, ')||', VALUE, ' instanceof Float32Array)?', VALUE, ':(',
          loop(matSize, function (i) {
            return STORAGE + '[' + i + ']=' + VALUE + '[' + i + ']'
          }), ',', STORAGE, ')');
      } else if (unroll > 1) {
        scope(loop(unroll, function (i) {
          return VALUE + '[' + i + ']'
        }));
      } else {
        scope(VALUE);
      }
      scope(');');
    }
  }

  function emitDraw (env, outer, inner, args) {
    var shared = env.shared;
    var GL = shared.gl;
    var DRAW_STATE = shared.draw;

    var drawOptions = args.draw;

    function emitElements () {
      var defn = drawOptions.elements;
      var ELEMENTS;
      var scope = outer;
      if (defn) {
        if ((defn.contextDep && args.contextDynamic) || defn.propDep) {
          scope = inner;
        }
        ELEMENTS = defn.append(env, scope);
      } else {
        ELEMENTS = scope.def(DRAW_STATE, '.', S_ELEMENTS);
      }
      if (ELEMENTS) {
        scope(
          'if(' + ELEMENTS + ')' +
          GL + '.bindBuffer(' + GL_ELEMENT_ARRAY_BUFFER$1 + ',' + ELEMENTS + '.buffer.buffer);');
      }
      return ELEMENTS
    }

    function emitCount () {
      var defn = drawOptions.count;
      var COUNT;
      var scope = outer;
      if (defn) {
        if ((defn.contextDep && args.contextDynamic) || defn.propDep) {
          scope = inner;
        }
        COUNT = defn.append(env, scope);
        check$1.optional(function () {
          if (defn.MISSING) {
            env.assert(outer, 'false', 'missing vertex count');
          }
          if (defn.DYNAMIC) {
            env.assert(scope, COUNT + '>=0', 'missing vertex count');
          }
        });
      } else {
        COUNT = scope.def(DRAW_STATE, '.', S_COUNT);
        check$1.optional(function () {
          env.assert(scope, COUNT + '>=0', 'missing vertex count');
        });
      }
      return COUNT
    }

    var ELEMENTS = emitElements();
    function emitValue (name) {
      var defn = drawOptions[name];
      if (defn) {
        if ((defn.contextDep && args.contextDynamic) || defn.propDep) {
          return defn.append(env, inner)
        } else {
          return defn.append(env, outer)
        }
      } else {
        return outer.def(DRAW_STATE, '.', name)
      }
    }

    var PRIMITIVE = emitValue(S_PRIMITIVE);
    var OFFSET = emitValue(S_OFFSET);

    var COUNT = emitCount();
    if (typeof COUNT === 'number') {
      if (COUNT === 0) {
        return
      }
    } else {
      inner('if(', COUNT, '){');
      inner.exit('}');
    }

    var INSTANCES, EXT_INSTANCING;
    if (extInstancing) {
      INSTANCES = emitValue(S_INSTANCES);
      EXT_INSTANCING = env.instancing;
    }

    var ELEMENT_TYPE = ELEMENTS + '.type';

    var elementsStatic = drawOptions.elements && isStatic(drawOptions.elements);

    function emitInstancing () {
      function drawElements () {
        inner(EXT_INSTANCING, '.drawElementsInstancedANGLE(', [
          PRIMITIVE,
          COUNT,
          ELEMENT_TYPE,
          OFFSET + '<<((' + ELEMENT_TYPE + '-' + GL_UNSIGNED_BYTE$7 + ')>>1)',
          INSTANCES
        ], ');');
      }

      function drawArrays () {
        inner(EXT_INSTANCING, '.drawArraysInstancedANGLE(',
          [PRIMITIVE, OFFSET, COUNT, INSTANCES], ');');
      }

      if (ELEMENTS) {
        if (!elementsStatic) {
          inner('if(', ELEMENTS, '){');
          drawElements();
          inner('}else{');
          drawArrays();
          inner('}');
        } else {
          drawElements();
        }
      } else {
        drawArrays();
      }
    }

    function emitRegular () {
      function drawElements () {
        inner(GL + '.drawElements(' + [
          PRIMITIVE,
          COUNT,
          ELEMENT_TYPE,
          OFFSET + '<<((' + ELEMENT_TYPE + '-' + GL_UNSIGNED_BYTE$7 + ')>>1)'
        ] + ');');
      }

      function drawArrays () {
        inner(GL + '.drawArrays(' + [PRIMITIVE, OFFSET, COUNT] + ');');
      }

      if (ELEMENTS) {
        if (!elementsStatic) {
          inner('if(', ELEMENTS, '){');
          drawElements();
          inner('}else{');
          drawArrays();
          inner('}');
        } else {
          drawElements();
        }
      } else {
        drawArrays();
      }
    }

    if (extInstancing && (typeof INSTANCES !== 'number' || INSTANCES >= 0)) {
      if (typeof INSTANCES === 'string') {
        inner('if(', INSTANCES, '>0){');
        emitInstancing();
        inner('}else if(', INSTANCES, '<0){');
        emitRegular();
        inner('}');
      } else {
        emitInstancing();
      }
    } else {
      emitRegular();
    }
  }

  function createBody (emitBody, parentEnv, args, program, count) {
    var env = createREGLEnvironment();
    var scope = env.proc('body', count);
    check$1.optional(function () {
      env.commandStr = parentEnv.commandStr;
      env.command = env.link(parentEnv.commandStr);
    });
    if (extInstancing) {
      env.instancing = scope.def(
        env.shared.extensions, '.angle_instanced_arrays');
    }
    emitBody(env, scope, args, program);
    return env.compile().body
  }

  // ===================================================
  // ===================================================
  // DRAW PROC
  // ===================================================
  // ===================================================
  function emitDrawBody (env, draw, args, program) {
    injectExtensions(env, draw);
    emitAttributes(env, draw, args, program.attributes, function () {
      return true
    });
    emitUniforms(env, draw, args, program.uniforms, function () {
      return true
    });
    emitDraw(env, draw, draw, args);
  }

  function emitDrawProc (env, args) {
    var draw = env.proc('draw', 1);

    injectExtensions(env, draw);

    emitContext(env, draw, args.context);
    emitPollFramebuffer(env, draw, args.framebuffer);

    emitPollState(env, draw, args);
    emitSetOptions(env, draw, args.state);

    emitProfile(env, draw, args, false, true);

    var program = args.shader.progVar.append(env, draw);
    draw(env.shared.gl, '.useProgram(', program, '.program);');

    if (args.shader.program) {
      emitDrawBody(env, draw, args, args.shader.program);
    } else {
      var drawCache = env.global.def('{}');
      var PROG_ID = draw.def(program, '.id');
      var CACHED_PROC = draw.def(drawCache, '[', PROG_ID, ']');
      draw(
        env.cond(CACHED_PROC)
          .then(CACHED_PROC, '.call(this,a0);')
          .else(
            CACHED_PROC, '=', drawCache, '[', PROG_ID, ']=',
            env.link(function (program) {
              return createBody(emitDrawBody, env, args, program, 1)
            }), '(', program, ');',
            CACHED_PROC, '.call(this,a0);'));
    }

    if (Object.keys(args.state).length > 0) {
      draw(env.shared.current, '.dirty=true;');
    }
  }

  // ===================================================
  // ===================================================
  // BATCH PROC
  // ===================================================
  // ===================================================

  function emitBatchDynamicShaderBody (env, scope, args, program) {
    env.batchId = 'a1';

    injectExtensions(env, scope);

    function all () {
      return true
    }

    emitAttributes(env, scope, args, program.attributes, all);
    emitUniforms(env, scope, args, program.uniforms, all);
    emitDraw(env, scope, scope, args);
  }

  function emitBatchBody (env, scope, args, program) {
    injectExtensions(env, scope);

    var contextDynamic = args.contextDep;

    var BATCH_ID = scope.def();
    var PROP_LIST = 'a0';
    var NUM_PROPS = 'a1';
    var PROPS = scope.def();
    env.shared.props = PROPS;
    env.batchId = BATCH_ID;

    var outer = env.scope();
    var inner = env.scope();

    scope(
      outer.entry,
      'for(', BATCH_ID, '=0;', BATCH_ID, '<', NUM_PROPS, ';++', BATCH_ID, '){',
      PROPS, '=', PROP_LIST, '[', BATCH_ID, '];',
      inner,
      '}',
      outer.exit);

    function isInnerDefn (defn) {
      return ((defn.contextDep && contextDynamic) || defn.propDep)
    }

    function isOuterDefn (defn) {
      return !isInnerDefn(defn)
    }

    if (args.needsContext) {
      emitContext(env, inner, args.context);
    }
    if (args.needsFramebuffer) {
      emitPollFramebuffer(env, inner, args.framebuffer);
    }
    emitSetOptions(env, inner, args.state, isInnerDefn);

    if (args.profile && isInnerDefn(args.profile)) {
      emitProfile(env, inner, args, false, true);
    }

    if (!program) {
      var progCache = env.global.def('{}');
      var PROGRAM = args.shader.progVar.append(env, inner);
      var PROG_ID = inner.def(PROGRAM, '.id');
      var CACHED_PROC = inner.def(progCache, '[', PROG_ID, ']');
      inner(
        env.shared.gl, '.useProgram(', PROGRAM, '.program);',
        'if(!', CACHED_PROC, '){',
        CACHED_PROC, '=', progCache, '[', PROG_ID, ']=',
        env.link(function (program) {
          return createBody(
            emitBatchDynamicShaderBody, env, args, program, 2)
        }), '(', PROGRAM, ');}',
        CACHED_PROC, '.call(this,a0[', BATCH_ID, '],', BATCH_ID, ');');
    } else {
      emitAttributes(env, outer, args, program.attributes, isOuterDefn);
      emitAttributes(env, inner, args, program.attributes, isInnerDefn);
      emitUniforms(env, outer, args, program.uniforms, isOuterDefn);
      emitUniforms(env, inner, args, program.uniforms, isInnerDefn);
      emitDraw(env, outer, inner, args);
    }
  }

  function emitBatchProc (env, args) {
    var batch = env.proc('batch', 2);
    env.batchId = '0';

    injectExtensions(env, batch);

    // Check if any context variables depend on props
    var contextDynamic = false;
    var needsContext = true;
    Object.keys(args.context).forEach(function (name) {
      contextDynamic = contextDynamic || args.context[name].propDep;
    });
    if (!contextDynamic) {
      emitContext(env, batch, args.context);
      needsContext = false;
    }

    // framebuffer state affects framebufferWidth/height context vars
    var framebuffer = args.framebuffer;
    var needsFramebuffer = false;
    if (framebuffer) {
      if (framebuffer.propDep) {
        contextDynamic = needsFramebuffer = true;
      } else if (framebuffer.contextDep && contextDynamic) {
        needsFramebuffer = true;
      }
      if (!needsFramebuffer) {
        emitPollFramebuffer(env, batch, framebuffer);
      }
    } else {
      emitPollFramebuffer(env, batch, null);
    }

    // viewport is weird because it can affect context vars
    if (args.state.viewport && args.state.viewport.propDep) {
      contextDynamic = true;
    }

    function isInnerDefn (defn) {
      return (defn.contextDep && contextDynamic) || defn.propDep
    }

    // set webgl options
    emitPollState(env, batch, args);
    emitSetOptions(env, batch, args.state, function (defn) {
      return !isInnerDefn(defn)
    });

    if (!args.profile || !isInnerDefn(args.profile)) {
      emitProfile(env, batch, args, false, 'a1');
    }

    // Save these values to args so that the batch body routine can use them
    args.contextDep = contextDynamic;
    args.needsContext = needsContext;
    args.needsFramebuffer = needsFramebuffer;

    // determine if shader is dynamic
    var progDefn = args.shader.progVar;
    if ((progDefn.contextDep && contextDynamic) || progDefn.propDep) {
      emitBatchBody(
        env,
        batch,
        args,
        null);
    } else {
      var PROGRAM = progDefn.append(env, batch);
      batch(env.shared.gl, '.useProgram(', PROGRAM, '.program);');
      if (args.shader.program) {
        emitBatchBody(
          env,
          batch,
          args,
          args.shader.program);
      } else {
        var batchCache = env.global.def('{}');
        var PROG_ID = batch.def(PROGRAM, '.id');
        var CACHED_PROC = batch.def(batchCache, '[', PROG_ID, ']');
        batch(
          env.cond(CACHED_PROC)
            .then(CACHED_PROC, '.call(this,a0,a1);')
            .else(
              CACHED_PROC, '=', batchCache, '[', PROG_ID, ']=',
              env.link(function (program) {
                return createBody(emitBatchBody, env, args, program, 2)
              }), '(', PROGRAM, ');',
              CACHED_PROC, '.call(this,a0,a1);'));
      }
    }

    if (Object.keys(args.state).length > 0) {
      batch(env.shared.current, '.dirty=true;');
    }
  }

  // ===================================================
  // ===================================================
  // SCOPE COMMAND
  // ===================================================
  // ===================================================
  function emitScopeProc (env, args) {
    var scope = env.proc('scope', 3);
    env.batchId = 'a2';

    var shared = env.shared;
    var CURRENT_STATE = shared.current;

    emitContext(env, scope, args.context);

    if (args.framebuffer) {
      args.framebuffer.append(env, scope);
    }

    sortState(Object.keys(args.state)).forEach(function (name) {
      var defn = args.state[name];
      var value = defn.append(env, scope);
      if (isArrayLike(value)) {
        value.forEach(function (v, i) {
          scope.set(env.next[name], '[' + i + ']', v);
        });
      } else {
        scope.set(shared.next, '.' + name, value);
      }
    });

    emitProfile(env, scope, args, true, true)

    ;[S_ELEMENTS, S_OFFSET, S_COUNT, S_INSTANCES, S_PRIMITIVE].forEach(
      function (opt) {
        var variable = args.draw[opt];
        if (!variable) {
          return
        }
        scope.set(shared.draw, '.' + opt, '' + variable.append(env, scope));
      });

    Object.keys(args.uniforms).forEach(function (opt) {
      scope.set(
        shared.uniforms,
        '[' + stringStore.id(opt) + ']',
        args.uniforms[opt].append(env, scope));
    });

    Object.keys(args.attributes).forEach(function (name) {
      var record = args.attributes[name].append(env, scope);
      var scopeAttrib = env.scopeAttrib(name);
      Object.keys(new AttributeRecord()).forEach(function (prop) {
        scope.set(scopeAttrib, '.' + prop, record[prop]);
      });
    });

    function saveShader (name) {
      var shader = args.shader[name];
      if (shader) {
        scope.set(shared.shader, '.' + name, shader.append(env, scope));
      }
    }
    saveShader(S_VERT);
    saveShader(S_FRAG);

    if (Object.keys(args.state).length > 0) {
      scope(CURRENT_STATE, '.dirty=true;');
      scope.exit(CURRENT_STATE, '.dirty=true;');
    }

    scope('a1(', env.shared.context, ',a0,', env.batchId, ');');
  }

  function isDynamicObject (object) {
    if (typeof object !== 'object' || isArrayLike(object)) {
      return
    }
    var props = Object.keys(object);
    for (var i = 0; i < props.length; ++i) {
      if (dynamic.isDynamic(object[props[i]])) {
        return true
      }
    }
    return false
  }

  function splatObject (env, options, name) {
    var object = options.static[name];
    if (!object || !isDynamicObject(object)) {
      return
    }

    var globals = env.global;
    var keys = Object.keys(object);
    var thisDep = false;
    var contextDep = false;
    var propDep = false;
    var objectRef = env.global.def('{}');
    keys.forEach(function (key) {
      var value = object[key];
      if (dynamic.isDynamic(value)) {
        if (typeof value === 'function') {
          value = object[key] = dynamic.unbox(value);
        }
        var deps = createDynamicDecl(value, null);
        thisDep = thisDep || deps.thisDep;
        propDep = propDep || deps.propDep;
        contextDep = contextDep || deps.contextDep;
      } else {
        globals(objectRef, '.', key, '=');
        switch (typeof value) {
          case 'number':
            globals(value);
            break
          case 'string':
            globals('"', value, '"');
            break
          case 'object':
            if (Array.isArray(value)) {
              globals('[', value.join(), ']');
            }
            break
          default:
            globals(env.link(value));
            break
        }
        globals(';');
      }
    });

    function appendBlock (env, block) {
      keys.forEach(function (key) {
        var value = object[key];
        if (!dynamic.isDynamic(value)) {
          return
        }
        var ref = env.invoke(block, value);
        block(objectRef, '.', key, '=', ref, ';');
      });
    }

    options.dynamic[name] = new dynamic.DynamicVariable(DYN_THUNK, {
      thisDep: thisDep,
      contextDep: contextDep,
      propDep: propDep,
      ref: objectRef,
      append: appendBlock
    });
    delete options.static[name];
  }

  // ===========================================================================
  // ===========================================================================
  // MAIN DRAW COMMAND
  // ===========================================================================
  // ===========================================================================
  function compileCommand (options, attributes, uniforms, context, stats) {
    var env = createREGLEnvironment();

    // link stats, so that we can easily access it in the program.
    env.stats = env.link(stats);

    // splat options and attributes to allow for dynamic nested properties
    Object.keys(attributes.static).forEach(function (key) {
      splatObject(env, attributes, key);
    });
    NESTED_OPTIONS.forEach(function (name) {
      splatObject(env, options, name);
    });

    var args = parseArguments(options, attributes, uniforms, context, env);

    emitDrawProc(env, args);
    emitScopeProc(env, args);
    emitBatchProc(env, args);

    return env.compile()
  }

  // ===========================================================================
  // ===========================================================================
  // POLL / REFRESH
  // ===========================================================================
  // ===========================================================================
  return {
    next: nextState,
    current: currentState,
    procs: (function () {
      var env = createREGLEnvironment();
      var poll = env.proc('poll');
      var refresh = env.proc('refresh');
      var common = env.block();
      poll(common);
      refresh(common);

      var shared = env.shared;
      var GL = shared.gl;
      var NEXT_STATE = shared.next;
      var CURRENT_STATE = shared.current;

      common(CURRENT_STATE, '.dirty=false;');

      emitPollFramebuffer(env, poll);
      emitPollFramebuffer(env, refresh, null, true);

      // Refresh updates all attribute state changes
      var extInstancing = gl.getExtension('angle_instanced_arrays');
      var INSTANCING;
      if (extInstancing) {
        INSTANCING = env.link(extInstancing);
      }
      for (var i = 0; i < limits.maxAttributes; ++i) {
        var BINDING = refresh.def(shared.attributes, '[', i, ']');
        var ifte = env.cond(BINDING, '.buffer');
        ifte.then(
          GL, '.enableVertexAttribArray(', i, ');',
          GL, '.bindBuffer(',
            GL_ARRAY_BUFFER$1, ',',
            BINDING, '.buffer.buffer);',
          GL, '.vertexAttribPointer(',
            i, ',',
            BINDING, '.size,',
            BINDING, '.type,',
            BINDING, '.normalized,',
            BINDING, '.stride,',
            BINDING, '.offset);'
        ).else(
          GL, '.disableVertexAttribArray(', i, ');',
          GL, '.vertexAttrib4f(',
            i, ',',
            BINDING, '.x,',
            BINDING, '.y,',
            BINDING, '.z,',
            BINDING, '.w);',
          BINDING, '.buffer=null;');
        refresh(ifte);
        if (extInstancing) {
          refresh(
            INSTANCING, '.vertexAttribDivisorANGLE(',
            i, ',',
            BINDING, '.divisor);');
        }
      }

      Object.keys(GL_FLAGS).forEach(function (flag) {
        var cap = GL_FLAGS[flag];
        var NEXT = common.def(NEXT_STATE, '.', flag);
        var block = env.block();
        block('if(', NEXT, '){',
          GL, '.enable(', cap, ')}else{',
          GL, '.disable(', cap, ')}',
          CURRENT_STATE, '.', flag, '=', NEXT, ';');
        refresh(block);
        poll(
          'if(', NEXT, '!==', CURRENT_STATE, '.', flag, '){',
          block,
          '}');
      });

      Object.keys(GL_VARIABLES).forEach(function (name) {
        var func = GL_VARIABLES[name];
        var init = currentState[name];
        var NEXT, CURRENT;
        var block = env.block();
        block(GL, '.', func, '(');
        if (isArrayLike(init)) {
          var n = init.length;
          NEXT = env.global.def(NEXT_STATE, '.', name);
          CURRENT = env.global.def(CURRENT_STATE, '.', name);
          block(
            loop(n, function (i) {
              return NEXT + '[' + i + ']'
            }), ');',
            loop(n, function (i) {
              return CURRENT + '[' + i + ']=' + NEXT + '[' + i + '];'
            }).join(''));
          poll(
            'if(', loop(n, function (i) {
              return NEXT + '[' + i + ']!==' + CURRENT + '[' + i + ']'
            }).join('||'), '){',
            block,
            '}');
        } else {
          NEXT = common.def(NEXT_STATE, '.', name);
          CURRENT = common.def(CURRENT_STATE, '.', name);
          block(
            NEXT, ');',
            CURRENT_STATE, '.', name, '=', NEXT, ';');
          poll(
            'if(', NEXT, '!==', CURRENT, '){',
            block,
            '}');
        }
        refresh(block);
      });

      return env.compile()
    })(),
    compile: compileCommand
  }
}

function stats () {
  return {
    bufferCount: 0,
    elementsCount: 0,
    framebufferCount: 0,
    shaderCount: 0,
    textureCount: 0,
    cubeCount: 0,
    renderbufferCount: 0,

    maxTextureUnits: 0
  }
}

var GL_QUERY_RESULT_EXT = 0x8866;
var GL_QUERY_RESULT_AVAILABLE_EXT = 0x8867;
var GL_TIME_ELAPSED_EXT = 0x88BF;

var createTimer = function (gl, extensions) {
  var extTimer = extensions.ext_disjoint_timer_query;

  if (!extTimer) {
    return null
  }

  // QUERY POOL BEGIN
  var queryPool = [];
  function allocQuery () {
    return queryPool.pop() || extTimer.createQueryEXT()
  }
  function freeQuery (query) {
    queryPool.push(query);
  }
  // QUERY POOL END

  var pendingQueries = [];
  function beginQuery (stats) {
    var query = allocQuery();
    extTimer.beginQueryEXT(GL_TIME_ELAPSED_EXT, query);
    pendingQueries.push(query);
    pushScopeStats(pendingQueries.length - 1, pendingQueries.length, stats);
  }

  function endQuery () {
    extTimer.endQueryEXT(GL_TIME_ELAPSED_EXT);
  }

  //
  // Pending stats pool.
  //
  function PendingStats () {
    this.startQueryIndex = -1;
    this.endQueryIndex = -1;
    this.sum = 0;
    this.stats = null;
  }
  var pendingStatsPool = [];
  function allocPendingStats () {
    return pendingStatsPool.pop() || new PendingStats()
  }
  function freePendingStats (pendingStats) {
    pendingStatsPool.push(pendingStats);
  }
  // Pending stats pool end

  var pendingStats = [];
  function pushScopeStats (start, end, stats) {
    var ps = allocPendingStats();
    ps.startQueryIndex = start;
    ps.endQueryIndex = end;
    ps.sum = 0;
    ps.stats = stats;
    pendingStats.push(ps);
  }

  // we should call this at the beginning of the frame,
  // in order to update gpuTime
  var timeSum = [];
  var queryPtr = [];
  function update () {
    var ptr, i;

    var n = pendingQueries.length;
    if (n === 0) {
      return
    }

    // Reserve space
    queryPtr.length = Math.max(queryPtr.length, n + 1);
    timeSum.length = Math.max(timeSum.length, n + 1);
    timeSum[0] = 0;
    queryPtr[0] = 0;

    // Update all pending timer queries
    var queryTime = 0;
    ptr = 0;
    for (i = 0; i < pendingQueries.length; ++i) {
      var query = pendingQueries[i];
      if (extTimer.getQueryObjectEXT(query, GL_QUERY_RESULT_AVAILABLE_EXT)) {
        queryTime += extTimer.getQueryObjectEXT(query, GL_QUERY_RESULT_EXT);
        freeQuery(query);
      } else {
        pendingQueries[ptr++] = query;
      }
      timeSum[i + 1] = queryTime;
      queryPtr[i + 1] = ptr;
    }
    pendingQueries.length = ptr;

    // Update all pending stat queries
    ptr = 0;
    for (i = 0; i < pendingStats.length; ++i) {
      var stats = pendingStats[i];
      var start = stats.startQueryIndex;
      var end = stats.endQueryIndex;
      stats.sum += timeSum[end] - timeSum[start];
      var startPtr = queryPtr[start];
      var endPtr = queryPtr[end];
      if (endPtr === startPtr) {
        stats.stats.gpuTime += stats.sum / 1e6;
        freePendingStats(stats);
      } else {
        stats.startQueryIndex = startPtr;
        stats.endQueryIndex = endPtr;
        pendingStats[ptr++] = stats;
      }
    }
    pendingStats.length = ptr;
  }

  return {
    beginQuery: beginQuery,
    endQuery: endQuery,
    pushScopeStats: pushScopeStats,
    update: update,
    getNumPendingQueries: function () {
      return pendingQueries.length
    },
    clear: function () {
      queryPool.push.apply(queryPool, pendingQueries);
      for (var i = 0; i < queryPool.length; i++) {
        extTimer.deleteQueryEXT(queryPool[i]);
      }
      pendingQueries.length = 0;
      queryPool.length = 0;
    },
    restore: function () {
      pendingQueries.length = 0;
      queryPool.length = 0;
    }
  }
};

var GL_COLOR_BUFFER_BIT = 16384;
var GL_DEPTH_BUFFER_BIT = 256;
var GL_STENCIL_BUFFER_BIT = 1024;

var GL_ARRAY_BUFFER = 34962;

var CONTEXT_LOST_EVENT = 'webglcontextlost';
var CONTEXT_RESTORED_EVENT = 'webglcontextrestored';

var DYN_PROP = 1;
var DYN_CONTEXT = 2;
var DYN_STATE = 3;

function find (haystack, needle) {
  for (var i = 0; i < haystack.length; ++i) {
    if (haystack[i] === needle) {
      return i
    }
  }
  return -1
}

function wrapREGL (args) {
  var config = parseArgs(args);
  if (!config) {
    return null
  }

  var gl = config.gl;
  var glAttributes = gl.getContextAttributes();
  var contextLost = gl.isContextLost();

  var extensionState = createExtensionCache(gl, config);
  if (!extensionState) {
    return null
  }

  var stringStore = createStringStore();
  var stats$$1 = stats();
  var extensions = extensionState.extensions;
  var timer = createTimer(gl, extensions);

  var START_TIME = clock();
  var WIDTH = gl.drawingBufferWidth;
  var HEIGHT = gl.drawingBufferHeight;

  var contextState = {
    tick: 0,
    time: 0,
    viewportWidth: WIDTH,
    viewportHeight: HEIGHT,
    framebufferWidth: WIDTH,
    framebufferHeight: HEIGHT,
    drawingBufferWidth: WIDTH,
    drawingBufferHeight: HEIGHT,
    pixelRatio: config.pixelRatio
  };
  var uniformState = {};
  var drawState = {
    elements: null,
    primitive: 4, // GL_TRIANGLES
    count: -1,
    offset: 0,
    instances: -1
  };

  var limits = wrapLimits(gl, extensions);
  var bufferState = wrapBufferState(gl, stats$$1, config);
  var elementState = wrapElementsState(gl, extensions, bufferState, stats$$1);
  var attributeState = wrapAttributeState(
    gl,
    extensions,
    limits,
    bufferState,
    stringStore);
  var shaderState = wrapShaderState(gl, stringStore, stats$$1, config);
  var textureState = createTextureSet(
    gl,
    extensions,
    limits,
    function () { core.procs.poll(); },
    contextState,
    stats$$1,
    config);
  var renderbufferState = wrapRenderbuffers(gl, extensions, limits, stats$$1, config);
  var framebufferState = wrapFBOState(
    gl,
    extensions,
    limits,
    textureState,
    renderbufferState,
    stats$$1);
  var core = reglCore(
    gl,
    stringStore,
    extensions,
    limits,
    bufferState,
    elementState,
    textureState,
    framebufferState,
    uniformState,
    attributeState,
    shaderState,
    drawState,
    contextState,
    timer,
    config);
  var readPixels = wrapReadPixels(
    gl,
    framebufferState,
    core.procs.poll,
    contextState,
    glAttributes, extensions);

  var nextState = core.next;
  var canvas = gl.canvas;

  var rafCallbacks = [];
  var lossCallbacks = [];
  var restoreCallbacks = [];
  var destroyCallbacks = [config.onDestroy];

  var activeRAF = null;
  function handleRAF () {
    if (rafCallbacks.length === 0) {
      if (timer) {
        timer.update();
      }
      activeRAF = null;
      return
    }

    // schedule next animation frame
    activeRAF = raf.next(handleRAF);

    // poll for changes
    poll();

    // fire a callback for all pending rafs
    for (var i = rafCallbacks.length - 1; i >= 0; --i) {
      var cb = rafCallbacks[i];
      if (cb) {
        cb(contextState, null, 0);
      }
    }

    // flush all pending webgl calls
    gl.flush();

    // poll GPU timers *after* gl.flush so we don't delay command dispatch
    if (timer) {
      timer.update();
    }
  }

  function startRAF () {
    if (!activeRAF && rafCallbacks.length > 0) {
      activeRAF = raf.next(handleRAF);
    }
  }

  function stopRAF () {
    if (activeRAF) {
      raf.cancel(handleRAF);
      activeRAF = null;
    }
  }

  function handleContextLoss (event) {
    event.preventDefault();

    // set context lost flag
    contextLost = true;

    // pause request animation frame
    stopRAF();

    // lose context
    lossCallbacks.forEach(function (cb) {
      cb();
    });
  }

  function handleContextRestored (event) {
    // clear error code
    gl.getError();

    // clear context lost flag
    contextLost = false;

    // refresh state
    extensionState.restore();
    shaderState.restore();
    bufferState.restore();
    textureState.restore();
    renderbufferState.restore();
    framebufferState.restore();
    if (timer) {
      timer.restore();
    }

    // refresh state
    core.procs.refresh();

    // restart RAF
    startRAF();

    // restore context
    restoreCallbacks.forEach(function (cb) {
      cb();
    });
  }

  if (canvas) {
    canvas.addEventListener(CONTEXT_LOST_EVENT, handleContextLoss, false);
    canvas.addEventListener(CONTEXT_RESTORED_EVENT, handleContextRestored, false);
  }

  function destroy () {
    rafCallbacks.length = 0;
    stopRAF();

    if (canvas) {
      canvas.removeEventListener(CONTEXT_LOST_EVENT, handleContextLoss);
      canvas.removeEventListener(CONTEXT_RESTORED_EVENT, handleContextRestored);
    }

    shaderState.clear();
    framebufferState.clear();
    renderbufferState.clear();
    textureState.clear();
    elementState.clear();
    bufferState.clear();

    if (timer) {
      timer.clear();
    }

    destroyCallbacks.forEach(function (cb) {
      cb();
    });
  }

  function compileProcedure (options) {
    check$1(!!options, 'invalid args to regl({...})');
    check$1.type(options, 'object', 'invalid args to regl({...})');

    function flattenNestedOptions (options) {
      var result = extend({}, options);
      delete result.uniforms;
      delete result.attributes;
      delete result.context;

      if ('stencil' in result && result.stencil.op) {
        result.stencil.opBack = result.stencil.opFront = result.stencil.op;
        delete result.stencil.op;
      }

      function merge (name) {
        if (name in result) {
          var child = result[name];
          delete result[name];
          Object.keys(child).forEach(function (prop) {
            result[name + '.' + prop] = child[prop];
          });
        }
      }
      merge('blend');
      merge('depth');
      merge('cull');
      merge('stencil');
      merge('polygonOffset');
      merge('scissor');
      merge('sample');

      return result
    }

    function separateDynamic (object) {
      var staticItems = {};
      var dynamicItems = {};
      Object.keys(object).forEach(function (option) {
        var value = object[option];
        if (dynamic.isDynamic(value)) {
          dynamicItems[option] = dynamic.unbox(value, option);
        } else {
          staticItems[option] = value;
        }
      });
      return {
        dynamic: dynamicItems,
        static: staticItems
      }
    }

    // Treat context variables separate from other dynamic variables
    var context = separateDynamic(options.context || {});
    var uniforms = separateDynamic(options.uniforms || {});
    var attributes = separateDynamic(options.attributes || {});
    var opts = separateDynamic(flattenNestedOptions(options));

    var stats$$1 = {
      gpuTime: 0.0,
      cpuTime: 0.0,
      count: 0
    };

    var compiled = core.compile(opts, attributes, uniforms, context, stats$$1);

    var draw = compiled.draw;
    var batch = compiled.batch;
    var scope = compiled.scope;

    // FIXME: we should modify code generation for batch commands so this
    // isn't necessary
    var EMPTY_ARRAY = [];
    function reserve (count) {
      while (EMPTY_ARRAY.length < count) {
        EMPTY_ARRAY.push(null);
      }
      return EMPTY_ARRAY
    }

    function REGLCommand (args, body) {
      var i;
      if (contextLost) {
        check$1.raise('context lost');
      }
      if (typeof args === 'function') {
        return scope.call(this, null, args, 0)
      } else if (typeof body === 'function') {
        if (typeof args === 'number') {
          for (i = 0; i < args; ++i) {
            scope.call(this, null, body, i);
          }
          return
        } else if (Array.isArray(args)) {
          for (i = 0; i < args.length; ++i) {
            scope.call(this, args[i], body, i);
          }
          return
        } else {
          return scope.call(this, args, body, 0)
        }
      } else if (typeof args === 'number') {
        if (args > 0) {
          return batch.call(this, reserve(args | 0), args | 0)
        }
      } else if (Array.isArray(args)) {
        if (args.length) {
          return batch.call(this, args, args.length)
        }
      } else {
        return draw.call(this, args)
      }
    }

    return extend(REGLCommand, {
      stats: stats$$1
    })
  }

  var setFBO = framebufferState.setFBO = compileProcedure({
    framebuffer: dynamic.define.call(null, DYN_PROP, 'framebuffer')
  });

  function clearImpl (_, options) {
    var clearFlags = 0;
    core.procs.poll();

    var c = options.color;
    if (c) {
      gl.clearColor(+c[0] || 0, +c[1] || 0, +c[2] || 0, +c[3] || 0);
      clearFlags |= GL_COLOR_BUFFER_BIT;
    }
    if ('depth' in options) {
      gl.clearDepth(+options.depth);
      clearFlags |= GL_DEPTH_BUFFER_BIT;
    }
    if ('stencil' in options) {
      gl.clearStencil(options.stencil | 0);
      clearFlags |= GL_STENCIL_BUFFER_BIT;
    }

    check$1(!!clearFlags, 'called regl.clear with no buffer specified');
    gl.clear(clearFlags);
  }

  function clear (options) {
    check$1(
      typeof options === 'object' && options,
      'regl.clear() takes an object as input');
    if ('framebuffer' in options) {
      if (options.framebuffer &&
          options.framebuffer_reglType === 'framebufferCube') {
        for (var i = 0; i < 6; ++i) {
          setFBO(extend({
            framebuffer: options.framebuffer.faces[i]
          }, options), clearImpl);
        }
      } else {
        setFBO(options, clearImpl);
      }
    } else {
      clearImpl(null, options);
    }
  }

  function frame (cb) {
    check$1.type(cb, 'function', 'regl.frame() callback must be a function');
    rafCallbacks.push(cb);

    function cancel () {
      // FIXME:  should we check something other than equals cb here?
      // what if a user calls frame twice with the same callback...
      //
      var i = find(rafCallbacks, cb);
      check$1(i >= 0, 'cannot cancel a frame twice');
      function pendingCancel () {
        var index = find(rafCallbacks, pendingCancel);
        rafCallbacks[index] = rafCallbacks[rafCallbacks.length - 1];
        rafCallbacks.length -= 1;
        if (rafCallbacks.length <= 0) {
          stopRAF();
        }
      }
      rafCallbacks[i] = pendingCancel;
    }

    startRAF();

    return {
      cancel: cancel
    }
  }

  // poll viewport
  function pollViewport () {
    var viewport = nextState.viewport;
    var scissorBox = nextState.scissor_box;
    viewport[0] = viewport[1] = scissorBox[0] = scissorBox[1] = 0;
    contextState.viewportWidth =
      contextState.framebufferWidth =
      contextState.drawingBufferWidth =
      viewport[2] =
      scissorBox[2] = gl.drawingBufferWidth;
    contextState.viewportHeight =
      contextState.framebufferHeight =
      contextState.drawingBufferHeight =
      viewport[3] =
      scissorBox[3] = gl.drawingBufferHeight;
  }

  function poll () {
    contextState.tick += 1;
    contextState.time = now();
    pollViewport();
    core.procs.poll();
  }

  function refresh () {
    pollViewport();
    core.procs.refresh();
    if (timer) {
      timer.update();
    }
  }

  function now () {
    return (clock() - START_TIME) / 1000.0
  }

  refresh();

  function addListener (event, callback) {
    check$1.type(callback, 'function', 'listener callback must be a function');

    var callbacks;
    switch (event) {
      case 'frame':
        return frame(callback)
      case 'lost':
        callbacks = lossCallbacks;
        break
      case 'restore':
        callbacks = restoreCallbacks;
        break
      case 'destroy':
        callbacks = destroyCallbacks;
        break
      default:
        check$1.raise('invalid event, must be one of frame,lost,restore,destroy');
    }

    callbacks.push(callback);
    return {
      cancel: function () {
        for (var i = 0; i < callbacks.length; ++i) {
          if (callbacks[i] === callback) {
            callbacks[i] = callbacks[callbacks.length - 1];
            callbacks.pop();
            return
          }
        }
      }
    }
  }

  var regl = extend(compileProcedure, {
    // Clear current FBO
    clear: clear,

    // Short cuts for dynamic variables
    prop: dynamic.define.bind(null, DYN_PROP),
    context: dynamic.define.bind(null, DYN_CONTEXT),
    this: dynamic.define.bind(null, DYN_STATE),

    // executes an empty draw command
    draw: compileProcedure({}),

    // Resources
    buffer: function (options) {
      return bufferState.create(options, GL_ARRAY_BUFFER, false, false)
    },
    elements: function (options) {
      return elementState.create(options, false)
    },
    texture: textureState.create2D,
    cube: textureState.createCube,
    renderbuffer: renderbufferState.create,
    framebuffer: framebufferState.create,
    framebufferCube: framebufferState.createCube,

    // Expose context attributes
    attributes: glAttributes,

    // Frame rendering
    frame: frame,
    on: addListener,

    // System limits
    limits: limits,
    hasExtension: function (name) {
      return limits.extensions.indexOf(name.toLowerCase()) >= 0
    },

    // Read pixels
    read: readPixels,

    // Destroy regl and all associated resources
    destroy: destroy,

    // Direct GL state manipulation
    _gl: gl,
    _refresh: refresh,

    poll: function () {
      poll();
      if (timer) {
        timer.update();
      }
    },

    // Current time
    now: now,

    // regl Statistics Information
    stats: stats$$1
  });

  config.onDone(null, regl);

  return regl
}

return wrapREGL;

})));


},{}],180:[function(require,module,exports){
/*!
 * repeat-string <https://github.com/jonschlinkert/repeat-string>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

'use strict';

/**
 * Results cache
 */

var res = '';
var cache;

/**
 * Expose `repeat`
 */

module.exports = repeat;

/**
 * Repeat the given `string` the specified `number`
 * of times.
 *
 * **Example:**
 *
 * ```js
 * var repeat = require('repeat-string');
 * repeat('A', 5);
 * //=> AAAAA
 * ```
 *
 * @param {String} `string` The string to repeat
 * @param {Number} `number` The number of times to repeat the string
 * @return {String} Repeated string
 * @api public
 */

function repeat(str, num) {
  if (typeof str !== 'string') {
    throw new TypeError('expected a string');
  }

  // cover common, quick use cases
  if (num === 1) return str;
  if (num === 2) return str + str;

  var max = str.length * num;
  if (cache !== str || typeof cache === 'undefined') {
    cache = str;
    res = '';
  } else if (res.length >= max) {
    return res.substr(0, max);
  }

  while (max > res.length && num > 1) {
    if (num & 1) {
      res += str;
    }

    num >>= 1;
    str += str;
  }

  res += str;
  res = res.substr(0, max);
  return res;
}

},{}],181:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var robustSum = require("robust-sum")
var robustDiff = require("robust-subtract")
var robustScale = require("robust-scale")

var NUM_EXPAND = 6

function cofactor(m, c) {
  var result = new Array(m.length-1)
  for(var i=1; i<m.length; ++i) {
    var r = result[i-1] = new Array(m.length-1)
    for(var j=0,k=0; j<m.length; ++j) {
      if(j === c) {
        continue
      }
      r[k++] = m[i][j]
    }
  }
  return result
}

function matrix(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = new Array(n)
    for(var j=0; j<n; ++j) {
      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
    }
  }
  return result
}

function generateSum(expr) {
  if(expr.length === 1) {
    return expr[0]
  } else if(expr.length === 2) {
    return ["sum(", expr[0], ",", expr[1], ")"].join("")
  } else {
    var m = expr.length>>1
    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
  }
}

function makeProduct(a, b) {
  if(a.charAt(0) === "m") {
    if(b.charAt(0) === "w") {
      var toks = a.split("[")
      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
    } else {
      return ["prod(", a, ",", b, ")"].join("")
    }
  } else {
    return makeProduct(b, a)
  }
}

function sign(s) {
  if(s & 1 !== 0) {
    return "-"
  }
  return ""
}

function determinant(m) {
  if(m.length === 2) {
    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
  } else {
    var expr = []
    for(var i=0; i<m.length; ++i) {
      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
    }
    return expr
  }
}

function makeSquare(d, n) {
  var terms = []
  for(var i=0; i<n-2; ++i) {
    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
  }
  return generateSum(terms)
}

function orientation(n) {
  var pos = []
  var neg = []
  var m = matrix(n)
  for(var i=0; i<n; ++i) {
    m[0][i] = "1"
    m[n-1][i] = "w"+i
  } 
  for(var i=0; i<n; ++i) {
    if((i&1)===0) {
      pos.push.apply(pos,determinant(cofactor(m, i)))
    } else {
      neg.push.apply(neg,determinant(cofactor(m, i)))
    }
  }
  var posExpr = generateSum(pos)
  var negExpr = generateSum(neg)
  var funcName = "exactInSphere" + n
  var funcArgs = []
  for(var i=0; i<n; ++i) {
    funcArgs.push("m" + i)
  }
  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
  for(var i=0; i<n; ++i) {
    code.push("var w",i,"=",makeSquare(i,n),";")
    for(var j=0; j<n; ++j) {
      if(j !== i) {
        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
      }
    }
  }
  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
  return proc(robustSum, robustDiff, twoProduct, robustScale)
}

function inSphere0() { return 0 }
function inSphere1() { return 0 }
function inSphere2() { return 0 }

var CACHED = [
  inSphere0,
  inSphere1,
  inSphere2
]

function slowInSphere(args) {
  var proc = CACHED[args.length]
  if(!proc) {
    proc = CACHED[args.length] = orientation(args.length)
  }
  return proc.apply(undefined, args)
}

function generateInSphereTest() {
  while(CACHED.length <= NUM_EXPAND) {
    CACHED.push(orientation(CACHED.length))
  }
  var args = []
  var procArgs = ["slow"]
  for(var i=0; i<=NUM_EXPAND; ++i) {
    args.push("a" + i)
    procArgs.push("o" + i)
  }
  var code = [
    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
  ]
  for(var i=2; i<=NUM_EXPAND; ++i) {
    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
  }
  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
  procArgs.push(code.join(""))

  var proc = Function.apply(undefined, procArgs)

  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
  for(var i=0; i<=NUM_EXPAND; ++i) {
    module.exports[i] = CACHED[i]
  }
}

generateInSphereTest()
},{"robust-scale":184,"robust-subtract":186,"robust-sum":187,"two-product":203}],182:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var robustSum = require("robust-sum")
var robustScale = require("robust-scale")
var robustSubtract = require("robust-subtract")

var NUM_EXPAND = 5

var EPSILON     = 1.1102230246251565e-16
var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON

function cofactor(m, c) {
  var result = new Array(m.length-1)
  for(var i=1; i<m.length; ++i) {
    var r = result[i-1] = new Array(m.length-1)
    for(var j=0,k=0; j<m.length; ++j) {
      if(j === c) {
        continue
      }
      r[k++] = m[i][j]
    }
  }
  return result
}

function matrix(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = new Array(n)
    for(var j=0; j<n; ++j) {
      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
    }
  }
  return result
}

function sign(n) {
  if(n & 1) {
    return "-"
  }
  return ""
}

function generateSum(expr) {
  if(expr.length === 1) {
    return expr[0]
  } else if(expr.length === 2) {
    return ["sum(", expr[0], ",", expr[1], ")"].join("")
  } else {
    var m = expr.length>>1
    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
  }
}

function determinant(m) {
  if(m.length === 2) {
    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
  } else {
    var expr = []
    for(var i=0; i<m.length; ++i) {
      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
    }
    return expr
  }
}

function orientation(n) {
  var pos = []
  var neg = []
  var m = matrix(n)
  var args = []
  for(var i=0; i<n; ++i) {
    if((i&1)===0) {
      pos.push.apply(pos, determinant(cofactor(m, i)))
    } else {
      neg.push.apply(neg, determinant(cofactor(m, i)))
    }
    args.push("m" + i)
  }
  var posExpr = generateSum(pos)
  var negExpr = generateSum(neg)
  var funcName = "orientation" + n + "Exact"
  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
return d[d.length-1];};return ", funcName].join("")
  var proc = new Function("sum", "prod", "scale", "sub", code)
  return proc(robustSum, twoProduct, robustScale, robustSubtract)
}

var orientation3Exact = orientation(3)
var orientation4Exact = orientation(4)

var CACHED = [
  function orientation0() { return 0 },
  function orientation1() { return 0 },
  function orientation2(a, b) { 
    return b[0] - a[0]
  },
  function orientation3(a, b, c) {
    var l = (a[1] - c[1]) * (b[0] - c[0])
    var r = (a[0] - c[0]) * (b[1] - c[1])
    var det = l - r
    var s
    if(l > 0) {
      if(r <= 0) {
        return det
      } else {
        s = l + r
      }
    } else if(l < 0) {
      if(r >= 0) {
        return det
      } else {
        s = -(l + r)
      }
    } else {
      return det
    }
    var tol = ERRBOUND3 * s
    if(det >= tol || det <= -tol) {
      return det
    }
    return orientation3Exact(a, b, c)
  },
  function orientation4(a,b,c,d) {
    var adx = a[0] - d[0]
    var bdx = b[0] - d[0]
    var cdx = c[0] - d[0]
    var ady = a[1] - d[1]
    var bdy = b[1] - d[1]
    var cdy = c[1] - d[1]
    var adz = a[2] - d[2]
    var bdz = b[2] - d[2]
    var cdz = c[2] - d[2]
    var bdxcdy = bdx * cdy
    var cdxbdy = cdx * bdy
    var cdxady = cdx * ady
    var adxcdy = adx * cdy
    var adxbdy = adx * bdy
    var bdxady = bdx * ady
    var det = adz * (bdxcdy - cdxbdy) 
            + bdz * (cdxady - adxcdy)
            + cdz * (adxbdy - bdxady)
    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
    var tol = ERRBOUND4 * permanent
    if ((det > tol) || (-det > tol)) {
      return det
    }
    return orientation4Exact(a,b,c,d)
  }
]

function slowOrient(args) {
  var proc = CACHED[args.length]
  if(!proc) {
    proc = CACHED[args.length] = orientation(args.length)
  }
  return proc.apply(undefined, args)
}

function generateOrientationProc() {
  while(CACHED.length <= NUM_EXPAND) {
    CACHED.push(orientation(CACHED.length))
  }
  var args = []
  var procArgs = ["slow"]
  for(var i=0; i<=NUM_EXPAND; ++i) {
    args.push("a" + i)
    procArgs.push("o" + i)
  }
  var code = [
    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
  ]
  for(var i=2; i<=NUM_EXPAND; ++i) {
    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
  }
  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
  procArgs.push(code.join(""))

  var proc = Function.apply(undefined, procArgs)
  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
  for(var i=0; i<=NUM_EXPAND; ++i) {
    module.exports[i] = CACHED[i]
  }
}

generateOrientationProc()
},{"robust-scale":184,"robust-subtract":186,"robust-sum":187,"two-product":203}],183:[function(require,module,exports){
"use strict"

var robustSum = require("robust-sum")
var robustScale = require("robust-scale")

module.exports = robustProduct

function robustProduct(a, b) {
  if(a.length === 1) {
    return robustScale(b, a[0])
  }
  if(b.length === 1) {
    return robustScale(a, b[0])
  }
  if(a.length === 0 || b.length === 0) {
    return [0]
  }
  var r = [0]
  if(a.length < b.length) {
    for(var i=0; i<a.length; ++i) {
      r = robustSum(r, robustScale(b, a[i]))
    }
  } else {
    for(var i=0; i<b.length; ++i) {
      r = robustSum(r, robustScale(a, b[i]))
    }    
  }
  return r
}
},{"robust-scale":184,"robust-sum":187}],184:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var twoSum = require("two-sum")

module.exports = scaleLinearExpansion

function scaleLinearExpansion(e, scale) {
  var n = e.length
  if(n === 1) {
    var ts = twoProduct(e[0], scale)
    if(ts[0]) {
      return ts
    }
    return [ ts[1] ]
  }
  var g = new Array(2 * n)
  var q = [0.1, 0.1]
  var t = [0.1, 0.1]
  var count = 0
  twoProduct(e[0], scale, q)
  if(q[0]) {
    g[count++] = q[0]
  }
  for(var i=1; i<n; ++i) {
    twoProduct(e[i], scale, t)
    var pq = q[1]
    twoSum(pq, t[0], q)
    if(q[0]) {
      g[count++] = q[0]
    }
    var a = t[1]
    var b = q[1]
    var x = a + b
    var bv = x - a
    var y = b - bv
    q[1] = x
    if(y) {
      g[count++] = y
    }
  }
  if(q[1]) {
    g[count++] = q[1]
  }
  if(count === 0) {
    g[count++] = 0.0
  }
  g.length = count
  return g
}
},{"two-product":203,"two-sum":204}],185:[function(require,module,exports){
"use strict"

module.exports = segmentsIntersect

var orient = require("robust-orientation")[3]

function checkCollinear(a0, a1, b0, b1) {

  for(var d=0; d<2; ++d) {
    var x0 = a0[d]
    var y0 = a1[d]
    var l0 = Math.min(x0, y0)
    var h0 = Math.max(x0, y0)    

    var x1 = b0[d]
    var y1 = b1[d]
    var l1 = Math.min(x1, y1)
    var h1 = Math.max(x1, y1)    

    if(h1 < l0 || h0 < l1) {
      return false
    }
  }

  return true
}

function segmentsIntersect(a0, a1, b0, b1) {
  var x0 = orient(a0, b0, b1)
  var y0 = orient(a1, b0, b1)
  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
    return false
  }

  var x1 = orient(b0, a0, a1)
  var y1 = orient(b1, a0, a1)
  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
    return false
  }

  //Check for degenerate collinear case
  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
    return checkCollinear(a0, a1, b0, b1)
  }

  return true
}
},{"robust-orientation":182}],186:[function(require,module,exports){
"use strict"

module.exports = robustSubtract

//Easy case: Add two scalars
function scalarScalar(a, b) {
  var x = a + b
  var bv = x - a
  var av = x - bv
  var br = b - bv
  var ar = a - av
  var y = ar + br
  if(y) {
    return [y, x]
  }
  return [x]
}

function robustSubtract(e, f) {
  var ne = e.length|0
  var nf = f.length|0
  if(ne === 1 && nf === 1) {
    return scalarScalar(e[0], -f[0])
  }
  var n = ne + nf
  var g = new Array(n)
  var count = 0
  var eptr = 0
  var fptr = 0
  var abs = Math.abs
  var ei = e[eptr]
  var ea = abs(ei)
  var fi = -f[fptr]
  var fa = abs(fi)
  var a, b
  if(ea < fa) {
    b = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    b = fi
    fptr += 1
    if(fptr < nf) {
      fi = -f[fptr]
      fa = abs(fi)
    }
  }
  if((eptr < ne && ea < fa) || (fptr >= nf)) {
    a = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    a = fi
    fptr += 1
    if(fptr < nf) {
      fi = -f[fptr]
      fa = abs(fi)
    }
  }
  var x = a + b
  var bv = x - a
  var y = b - bv
  var q0 = y
  var q1 = x
  var _x, _bv, _av, _br, _ar
  while(eptr < ne && fptr < nf) {
    if(ea < fa) {
      a = ei
      eptr += 1
      if(eptr < ne) {
        ei = e[eptr]
        ea = abs(ei)
      }
    } else {
      a = fi
      fptr += 1
      if(fptr < nf) {
        fi = -f[fptr]
        fa = abs(fi)
      }
    }
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
  }
  while(eptr < ne) {
    a = ei
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
    }
  }
  while(fptr < nf) {
    a = fi
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    } 
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    fptr += 1
    if(fptr < nf) {
      fi = -f[fptr]
    }
  }
  if(q0) {
    g[count++] = q0
  }
  if(q1) {
    g[count++] = q1
  }
  if(!count) {
    g[count++] = 0.0  
  }
  g.length = count
  return g
}
},{}],187:[function(require,module,exports){
"use strict"

module.exports = linearExpansionSum

//Easy case: Add two scalars
function scalarScalar(a, b) {
  var x = a + b
  var bv = x - a
  var av = x - bv
  var br = b - bv
  var ar = a - av
  var y = ar + br
  if(y) {
    return [y, x]
  }
  return [x]
}

function linearExpansionSum(e, f) {
  var ne = e.length|0
  var nf = f.length|0
  if(ne === 1 && nf === 1) {
    return scalarScalar(e[0], f[0])
  }
  var n = ne + nf
  var g = new Array(n)
  var count = 0
  var eptr = 0
  var fptr = 0
  var abs = Math.abs
  var ei = e[eptr]
  var ea = abs(ei)
  var fi = f[fptr]
  var fa = abs(fi)
  var a, b
  if(ea < fa) {
    b = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    b = fi
    fptr += 1
    if(fptr < nf) {
      fi = f[fptr]
      fa = abs(fi)
    }
  }
  if((eptr < ne && ea < fa) || (fptr >= nf)) {
    a = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    a = fi
    fptr += 1
    if(fptr < nf) {
      fi = f[fptr]
      fa = abs(fi)
    }
  }
  var x = a + b
  var bv = x - a
  var y = b - bv
  var q0 = y
  var q1 = x
  var _x, _bv, _av, _br, _ar
  while(eptr < ne && fptr < nf) {
    if(ea < fa) {
      a = ei
      eptr += 1
      if(eptr < ne) {
        ei = e[eptr]
        ea = abs(ei)
      }
    } else {
      a = fi
      fptr += 1
      if(fptr < nf) {
        fi = f[fptr]
        fa = abs(fi)
      }
    }
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
  }
  while(eptr < ne) {
    a = ei
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
    }
  }
  while(fptr < nf) {
    a = fi
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    } 
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    fptr += 1
    if(fptr < nf) {
      fi = f[fptr]
    }
  }
  if(q0) {
    g[count++] = q0
  }
  if(q1) {
    g[count++] = q1
  }
  if(!count) {
    g[count++] = 0.0  
  }
  g.length = count
  return g
}
},{}],188:[function(require,module,exports){
"use strict"

module.exports = function signum(x) {
  if(x < 0) { return -1 }
  if(x > 0) { return 1 }
  return 0.0
}
},{}],189:[function(require,module,exports){
arguments[4][31][0].apply(exports,arguments)
},{"dup":31}],190:[function(require,module,exports){
"use strict"; "use restrict";

var bits      = require("bit-twiddle")
  , UnionFind = require("union-find")

//Returns the dimension of a cell complex
function dimension(cells) {
  var d = 0
    , max = Math.max
  for(var i=0, il=cells.length; i<il; ++i) {
    d = max(d, cells[i].length)
  }
  return d-1
}
exports.dimension = dimension

//Counts the number of vertices in faces
function countVertices(cells) {
  var vc = -1
    , max = Math.max
  for(var i=0, il=cells.length; i<il; ++i) {
    var c = cells[i]
    for(var j=0, jl=c.length; j<jl; ++j) {
      vc = max(vc, c[j])
    }
  }
  return vc+1
}
exports.countVertices = countVertices

//Returns a deep copy of cells
function cloneCells(cells) {
  var ncells = new Array(cells.length)
  for(var i=0, il=cells.length; i<il; ++i) {
    ncells[i] = cells[i].slice(0)
  }
  return ncells
}
exports.cloneCells = cloneCells

//Ranks a pair of cells up to permutation
function compareCells(a, b) {
  var n = a.length
    , t = a.length - b.length
    , min = Math.min
  if(t) {
    return t
  }
  switch(n) {
    case 0:
      return 0;
    case 1:
      return a[0] - b[0];
    case 2:
      var d = a[0]+a[1]-b[0]-b[1]
      if(d) {
        return d
      }
      return min(a[0],a[1]) - min(b[0],b[1])
    case 3:
      var l1 = a[0]+a[1]
        , m1 = b[0]+b[1]
      d = l1+a[2] - (m1+b[2])
      if(d) {
        return d
      }
      var l0 = min(a[0], a[1])
        , m0 = min(b[0], b[1])
        , d  = min(l0, a[2]) - min(m0, b[2])
      if(d) {
        return d
      }
      return min(l0+a[2], l1) - min(m0+b[2], m1)
    
    //TODO: Maybe optimize n=4 as well?
    
    default:
      var as = a.slice(0)
      as.sort()
      var bs = b.slice(0)
      bs.sort()
      for(var i=0; i<n; ++i) {
        t = as[i] - bs[i]
        if(t) {
          return t
        }
      }
      return 0
  }
}
exports.compareCells = compareCells

function compareZipped(a, b) {
  return compareCells(a[0], b[0])
}

//Puts a cell complex into normal order for the purposes of findCell queries
function normalize(cells, attr) {
  if(attr) {
    var len = cells.length
    var zipped = new Array(len)
    for(var i=0; i<len; ++i) {
      zipped[i] = [cells[i], attr[i]]
    }
    zipped.sort(compareZipped)
    for(var i=0; i<len; ++i) {
      cells[i] = zipped[i][0]
      attr[i] = zipped[i][1]
    }
    return cells
  } else {
    cells.sort(compareCells)
    return cells
  }
}
exports.normalize = normalize

//Removes all duplicate cells in the complex
function unique(cells) {
  if(cells.length === 0) {
    return []
  }
  var ptr = 1
    , len = cells.length
  for(var i=1; i<len; ++i) {
    var a = cells[i]
    if(compareCells(a, cells[i-1])) {
      if(i === ptr) {
        ptr++
        continue
      }
      cells[ptr++] = a
    }
  }
  cells.length = ptr
  return cells
}
exports.unique = unique;

//Finds a cell in a normalized cell complex
function findCell(cells, c) {
  var lo = 0
    , hi = cells.length-1
    , r  = -1
  while (lo <= hi) {
    var mid = (lo + hi) >> 1
      , s   = compareCells(cells[mid], c)
    if(s <= 0) {
      if(s === 0) {
        r = mid
      }
      lo = mid + 1
    } else if(s > 0) {
      hi = mid - 1
    }
  }
  return r
}
exports.findCell = findCell;

//Builds an index for an n-cell.  This is more general than dual, but less efficient
function incidence(from_cells, to_cells) {
  var index = new Array(from_cells.length)
  for(var i=0, il=index.length; i<il; ++i) {
    index[i] = []
  }
  var b = []
  for(var i=0, n=to_cells.length; i<n; ++i) {
    var c = to_cells[i]
    var cl = c.length
    for(var k=1, kn=(1<<cl); k<kn; ++k) {
      b.length = bits.popCount(k)
      var l = 0
      for(var j=0; j<cl; ++j) {
        if(k & (1<<j)) {
          b[l++] = c[j]
        }
      }
      var idx=findCell(from_cells, b)
      if(idx < 0) {
        continue
      }
      while(true) {
        index[idx++].push(i)
        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
          break
        }
      }
    }
  }
  return index
}
exports.incidence = incidence

//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
function dual(cells, vertex_count) {
  if(!vertex_count) {
    return incidence(unique(skeleton(cells, 0)), cells, 0)
  }
  var res = new Array(vertex_count)
  for(var i=0; i<vertex_count; ++i) {
    res[i] = []
  }
  for(var i=0, len=cells.length; i<len; ++i) {
    var c = cells[i]
    for(var j=0, cl=c.length; j<cl; ++j) {
      res[c[j]].push(i)
    }
  }
  return res
}
exports.dual = dual

//Enumerates all cells in the complex
function explode(cells) {
  var result = []
  for(var i=0, il=cells.length; i<il; ++i) {
    var c = cells[i]
      , cl = c.length|0
    for(var j=1, jl=(1<<cl); j<jl; ++j) {
      var b = []
      for(var k=0; k<cl; ++k) {
        if((j >>> k) & 1) {
          b.push(c[k])
        }
      }
      result.push(b)
    }
  }
  return normalize(result)
}
exports.explode = explode

//Enumerates all of the n-cells of a cell complex
function skeleton(cells, n) {
  if(n < 0) {
    return []
  }
  var result = []
    , k0     = (1<<(n+1))-1
  for(var i=0; i<cells.length; ++i) {
    var c = cells[i]
    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
      var b = new Array(n+1)
        , l = 0
      for(var j=0; j<c.length; ++j) {
        if(k & (1<<j)) {
          b[l++] = c[j]
        }
      }
      result.push(b)
    }
  }
  return normalize(result)
}
exports.skeleton = skeleton;

//Computes the boundary of all cells, does not remove duplicates
function boundary(cells) {
  var res = []
  for(var i=0,il=cells.length; i<il; ++i) {
    var c = cells[i]
    for(var j=0,cl=c.length; j<cl; ++j) {
      var b = new Array(c.length-1)
      for(var k=0, l=0; k<cl; ++k) {
        if(k !== j) {
          b[l++] = c[k]
        }
      }
      res.push(b)
    }
  }
  return normalize(res)
}
exports.boundary = boundary;

//Computes connected components for a dense cell complex
function connectedComponents_dense(cells, vertex_count) {
  var labels = new UnionFind(vertex_count)
  for(var i=0; i<cells.length; ++i) {
    var c = cells[i]
    for(var j=0; j<c.length; ++j) {
      for(var k=j+1; k<c.length; ++k) {
        labels.link(c[j], c[k])
      }
    }
  }
  var components = []
    , component_labels = labels.ranks
  for(var i=0; i<component_labels.length; ++i) {
    component_labels[i] = -1
  }
  for(var i=0; i<cells.length; ++i) {
    var l = labels.find(cells[i][0])
    if(component_labels[l] < 0) {
      component_labels[l] = components.length
      components.push([cells[i].slice(0)])
    } else {
      components[component_labels[l]].push(cells[i].slice(0))
    }
  }
  return components
}

//Computes connected components for a sparse graph
function connectedComponents_sparse(cells) {
  var vertices  = unique(normalize(skeleton(cells, 0)))
    , labels    = new UnionFind(vertices.length)
  for(var i=0; i<cells.length; ++i) {
    var c = cells[i]
    for(var j=0; j<c.length; ++j) {
      var vj = findCell(vertices, [c[j]])
      for(var k=j+1; k<c.length; ++k) {
        labels.link(vj, findCell(vertices, [c[k]]))
      }
    }
  }
  var components        = []
    , component_labels  = labels.ranks
  for(var i=0; i<component_labels.length; ++i) {
    component_labels[i] = -1
  }
  for(var i=0; i<cells.length; ++i) {
    var l = labels.find(findCell(vertices, [cells[i][0]]));
    if(component_labels[l] < 0) {
      component_labels[l] = components.length
      components.push([cells[i].slice(0)])
    } else {
      components[component_labels[l]].push(cells[i].slice(0))
    }
  }
  return components
}

//Computes connected components for a cell complex
function connectedComponents(cells, vertex_count) {
  if(vertex_count) {
    return connectedComponents_dense(cells, vertex_count)
  }
  return connectedComponents_sparse(cells)
}
exports.connectedComponents = connectedComponents

},{"bit-twiddle":189,"union-find":191}],191:[function(require,module,exports){
"use strict"; "use restrict";

module.exports = UnionFind;

function UnionFind(count) {
  this.roots = new Array(count);
  this.ranks = new Array(count);
  
  for(var i=0; i<count; ++i) {
    this.roots[i] = i;
    this.ranks[i] = 0;
  }
}

UnionFind.prototype.length = function() {
  return this.roots.length;
}

UnionFind.prototype.makeSet = function() {
  var n = this.roots.length;
  this.roots.push(n);
  this.ranks.push(0);
  return n;
}

UnionFind.prototype.find = function(x) {
  var roots = this.roots;
  while(roots[x] !== x) {
    var y = roots[x];
    roots[x] = roots[y];
    x = y;
  }
  return x;
}

UnionFind.prototype.link = function(x, y) {
  var xr = this.find(x)
    , yr = this.find(y);
  if(xr === yr) {
    return;
  }
  var ranks = this.ranks
    , roots = this.roots
    , xd    = ranks[xr]
    , yd    = ranks[yr];
  if(xd < yd) {
    roots[xr] = yr;
  } else if(yd < xd) {
    roots[yr] = xr;
  } else {
    roots[yr] = xr;
    ++ranks[xr];
  }
}


},{}],192:[function(require,module,exports){
"use strict"

module.exports = simplifyPolygon

var orient = require("robust-orientation")
var sc = require("simplicial-complex")

function errorWeight(base, a, b) {
  var area = Math.abs(orient(base, a, b))
  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
  return area / perim
}

function simplifyPolygon(cells, positions, minArea) {

  var n = positions.length
  var nc = cells.length
  var inv = new Array(n)
  var outv = new Array(n)
  var weights = new Array(n)
  var dead = new Array(n)
  
  //Initialize tables
  for(var i=0; i<n; ++i) {
    inv[i] = outv[i] = -1
    weights[i] = Infinity
    dead[i] = false
  }

  //Compute neighbors
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    if(c.length !== 2) {
      throw new Error("Input must be a graph")
    }
    var s = c[1]
    var t = c[0]
    if(outv[t] !== -1) {
      outv[t] = -2
    } else {
      outv[t] = s
    }
    if(inv[s] !== -1) {
      inv[s] = -2
    } else {
      inv[s] = t
    }
  }

  //Updates the weight for vertex i
  function computeWeight(i) {
    if(dead[i]) {
      return Infinity
    }
    //TODO: Check that the line segment doesn't cross once simplified
    var s = inv[i]
    var t = outv[i]
    if((s<0) || (t<0)) {
      return Infinity
    } else {
      return errorWeight(positions[i], positions[s], positions[t])
    }
  }

  //Swaps two nodes on the heap (i,j) are the index of the nodes
  function heapSwap(i,j) {
    var a = heap[i]
    var b = heap[j]
    heap[i] = b
    heap[j] = a
    index[a] = j
    index[b] = i
  }

  //Returns the weight of node i on the heap
  function heapWeight(i) {
    return weights[heap[i]]
  }

  function heapParent(i) {
    if(i & 1) {
      return (i - 1) >> 1
    }
    return (i >> 1) - 1
  }

  //Bubble element i down the heap
  function heapDown(i) {
    var w = heapWeight(i)
    while(true) {
      var tw = w
      var left  = 2*i + 1
      var right = 2*(i + 1)
      var next = i
      if(left < heapCount) {
        var lw = heapWeight(left)
        if(lw < tw) {
          next = left
          tw = lw
        }
      }
      if(right < heapCount) {
        var rw = heapWeight(right)
        if(rw < tw) {
          next = right
        }
      }
      if(next === i) {
        return i
      }
      heapSwap(i, next)
      i = next      
    }
  }

  //Bubbles element i up the heap
  function heapUp(i) {
    var w = heapWeight(i)
    while(i > 0) {
      var parent = heapParent(i)
      if(parent >= 0) {
        var pw = heapWeight(parent)
        if(w < pw) {
          heapSwap(i, parent)
          i = parent
          continue
        }
      }
      return i
    }
  }

  //Pop minimum element
  function heapPop() {
    if(heapCount > 0) {
      var head = heap[0]
      heapSwap(0, heapCount-1)
      heapCount -= 1
      heapDown(0)
      return head
    }
    return -1
  }

  //Update heap item i
  function heapUpdate(i, w) {
    var a = heap[i]
    if(weights[a] === w) {
      return i
    }
    weights[a] = -Infinity
    heapUp(i)
    heapPop()
    weights[a] = w
    heapCount += 1
    return heapUp(heapCount-1)
  }

  //Kills a vertex (assume vertex already removed from heap)
  function kill(i) {
    if(dead[i]) {
      return
    }
    //Kill vertex
    dead[i] = true
    //Fixup topology
    var s = inv[i]
    var t = outv[i]
    if(inv[t] >= 0) {
      inv[t] = s
    }
    if(outv[s] >= 0) {
      outv[s] = t
    }

    //Update weights on s and t
    if(index[s] >= 0) {
      heapUpdate(index[s], computeWeight(s))
    }
    if(index[t] >= 0) {
      heapUpdate(index[t], computeWeight(t))
    }
  }

  //Initialize weights and heap
  var heap = []
  var index = new Array(n)
  for(var i=0; i<n; ++i) {
    var w = weights[i] = computeWeight(i)
    if(w < Infinity) {
      index[i] = heap.length
      heap.push(i)
    } else {
      index[i] = -1
    }
  }
  var heapCount = heap.length
  for(var i=heapCount>>1; i>=0; --i) {
    heapDown(i)
  }
  
  //Kill vertices
  while(true) {
    var hmin = heapPop()
    if((hmin < 0) || (weights[hmin] > minArea)) {
      break
    }
    kill(hmin)
  }

  //Build collapsed vertex table
  var npositions = []
  for(var i=0; i<n; ++i) {
    if(!dead[i]) {
      index[i] = npositions.length
      npositions.push(positions[i].slice())
    }
  }
  var nv = npositions.length

  function tortoiseHare(seq, start) {
    if(seq[start] < 0) {
      return start
    }
    var t = start
    var h = start
    do {
      //Walk two steps with h
      var nh = seq[h]
      if(!dead[h] || nh < 0 || nh === h) {
        break
      }
      h = nh
      nh = seq[h]
      if(!dead[h] || nh < 0 || nh === h) {
        break
      }
      h = nh

      //Walk one step with t
      t = seq[t]
    } while(t !== h)
    //Compress cycles
    for(var v=start; v!==h; v = seq[v]) {
      seq[v] = h
    }
    return h
  }

  var ncells = []
  cells.forEach(function(c) {
    var tin = tortoiseHare(inv, c[0])
    var tout = tortoiseHare(outv, c[1])
    if(tin >= 0 && tout >= 0 && tin !== tout) {
      var cin = index[tin]
      var cout = index[tout]
      if(cin !== cout) {
        ncells.push([ cin, cout ])
      }
    }
  })

  //Normalize result
  sc.unique(sc.normalize(ncells))

  //Return final list of cells
  return {
    positions: npositions,
    edges: ncells
  }
}
},{"robust-orientation":182,"simplicial-complex":190}],193:[function(require,module,exports){
"use strict"

module.exports = orderSegments

var orient = require("robust-orientation")

function horizontalOrder(a, b) {
  var bl, br
  if(b[0][0] < b[1][0]) {
    bl = b[0]
    br = b[1]
  } else if(b[0][0] > b[1][0]) {
    bl = b[1]
    br = b[0]
  } else {
    var alo = Math.min(a[0][1], a[1][1])
    var ahi = Math.max(a[0][1], a[1][1])
    var blo = Math.min(b[0][1], b[1][1])
    var bhi = Math.max(b[0][1], b[1][1])
    if(ahi < blo) {
      return ahi - blo
    }
    if(alo > bhi) {
      return alo - bhi
    }
    return ahi - bhi
  }
  var al, ar
  if(a[0][1] < a[1][1]) {
    al = a[0]
    ar = a[1]
  } else {
    al = a[1]
    ar = a[0]
  }
  var d = orient(br, bl, al)
  if(d) {
    return d
  }
  d = orient(br, bl, ar)
  if(d) {
    return d
  }
  return ar - br
}

function orderSegments(b, a) {
  var al, ar
  if(a[0][0] < a[1][0]) {
    al = a[0]
    ar = a[1]
  } else if(a[0][0] > a[1][0]) {
    al = a[1]
    ar = a[0]
  } else {
    return horizontalOrder(a, b)
  }
  var bl, br
  if(b[0][0] < b[1][0]) {
    bl = b[0]
    br = b[1]
  } else if(b[0][0] > b[1][0]) {
    bl = b[1]
    br = b[0]
  } else {
    return -horizontalOrder(b, a)
  }
  var d1 = orient(al, ar, br)
  var d2 = orient(al, ar, bl)
  if(d1 < 0) {
    if(d2 <= 0) {
      return d1
    }
  } else if(d1 > 0) {
    if(d2 >= 0) {
      return d1
    }
  } else if(d2) {
    return d2
  }
  d1 = orient(br, bl, ar)
  d2 = orient(br, bl, al)
  if(d1 < 0) {
    if(d2 <= 0) {
      return d1
    }
  } else if(d1 > 0) {
    if(d2 >= 0) {
      return d1
    }
  } else if(d2) {
    return d2
  }
  return ar[0] - br[0]
}
},{"robust-orientation":182}],194:[function(require,module,exports){
"use strict"

module.exports = createSlabDecomposition

var bounds = require("binary-search-bounds")
var createRBTree = require("functional-red-black-tree")
var orient = require("robust-orientation")
var orderSegments = require("./lib/order-segments")

function SlabDecomposition(slabs, coordinates, horizontal) {
  this.slabs = slabs
  this.coordinates = coordinates
  this.horizontal = horizontal
}

var proto = SlabDecomposition.prototype

function compareHorizontal(e, y) {
  return e.y - y
}

function searchBucket(root, p) {
  var lastNode = null
  while(root) {
    var seg = root.key
    var l, r
    if(seg[0][0] < seg[1][0]) {
      l = seg[0]
      r = seg[1]
    } else {
      l = seg[1]
      r = seg[0]
    }
    var o = orient(l, r, p)
    if(o < 0) {
      root = root.left
    } else if(o > 0) {
      if(p[0] !== seg[1][0]) {
        lastNode = root
        root = root.right
      } else {
        var val = searchBucket(root.right, p)
        if(val) {
          return val
        }
        root = root.left
      }
    } else {
      if(p[0] !== seg[1][0]) {
        return root
      } else {
        var val = searchBucket(root.right, p)
        if(val) {
          return val
        }
        root = root.left
      }
    }
  }
  return lastNode
}

proto.castUp = function(p) {
  var bucket = bounds.le(this.coordinates, p[0])
  if(bucket < 0) {
    return -1
  }
  var root = this.slabs[bucket]
  var hitNode = searchBucket(this.slabs[bucket], p)
  var lastHit = -1
  if(hitNode) {
    lastHit = hitNode.value
  }
  //Edge case: need to handle horizontal segments (sucks)
  if(this.coordinates[bucket] === p[0]) {
    var lastSegment = null
    if(hitNode) {
      lastSegment = hitNode.key
    }
    if(bucket > 0) {
      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
      if(otherHitNode) {
        if(lastSegment) {
          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
            lastSegment = otherHitNode.key
            lastHit = otherHitNode.value
          }
        } else {
          lastHit = otherHitNode.value
          lastSegment = otherHitNode.key
        }
      }
    }
    var horiz = this.horizontal[bucket]
    if(horiz.length > 0) {
      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
      if(hbucket < horiz.length) {
        var e = horiz[hbucket]
        if(p[1] === e.y) {
          if(e.closed) {
            return e.index
          } else {
            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
              hbucket = hbucket+1
              e = horiz[hbucket]
              if(e.closed) {
                return e.index
              }
            }
            if(e.y === p[1] && !e.start) {
              hbucket = hbucket+1
              if(hbucket >= horiz.length) {
                return lastHit
              }
              e = horiz[hbucket]
            }
          }
        }
        //Check if e is above/below last segment
        if(e.start) {
          if(lastSegment) {
            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
            if(lastSegment[0][0] > lastSegment[1][0]) {
              o = -o
            }
            if(o > 0) {
              lastHit = e.index
            }
          } else {
            lastHit = e.index
          }
        } else if(e.y !== p[1]) {
          lastHit = e.index
        }
      }
    }
  }
  return lastHit
}

function IntervalSegment(y, index, start, closed) {
  this.y = y
  this.index = index
  this.start = start
  this.closed = closed
}

function Event(x, segment, create, index) {
  this.x = x
  this.segment = segment
  this.create = create
  this.index = index
}


function createSlabDecomposition(segments) {
  var numSegments = segments.length
  var numEvents = 2 * numSegments
  var events = new Array(numEvents)
  for(var i=0; i<numSegments; ++i) {
    var s = segments[i]
    var f = s[0][0] < s[1][0]
    events[2*i] = new Event(s[0][0], s, f, i)
    events[2*i+1] = new Event(s[1][0], s, !f, i)
  }
  events.sort(function(a,b) {
    var d = a.x - b.x
    if(d) {
      return d
    }
    d = a.create - b.create
    if(d) {
      return d
    }
    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
  })
  var tree = createRBTree(orderSegments)
  var slabs = []
  var lines = []
  var horizontal = []
  var lastX = -Infinity
  for(var i=0; i<numEvents; ) {
    var x = events[i].x
    var horiz = []
    while(i < numEvents) {
      var e = events[i]
      if(e.x !== x) {
        break
      }
      i += 1
      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
        if(e.create) {
          if(e.segment[0][1] < e.segment[1][1]) {
            horiz.push(new IntervalSegment(
                e.segment[0][1],
                e.index,
                true,
                true))
            horiz.push(new IntervalSegment(
                e.segment[1][1],
                e.index,
                false,
                false))
          } else {
            horiz.push(new IntervalSegment(
                e.segment[1][1],
                e.index,
                true,
                false))
            horiz.push(new IntervalSegment(
                e.segment[0][1],
                e.index,
                false,
                true))
          }
        }
      } else {
        if(e.create) {
          tree = tree.insert(e.segment, e.index)
        } else {
          tree = tree.remove(e.segment)
        }
      }
    }
    slabs.push(tree.root)
    lines.push(x)
    horizontal.push(horiz)
  }
  return new SlabDecomposition(slabs, lines, horizontal)
}
},{"./lib/order-segments":193,"binary-search-bounds":30,"functional-red-black-tree":70,"robust-orientation":182}],195:[function(require,module,exports){
/* global window, exports, define */

!function() {
    'use strict'

    var re = {
        not_string: /[^s]/,
        not_bool: /[^t]/,
        not_type: /[^T]/,
        not_primitive: /[^v]/,
        number: /[diefg]/,
        numeric_arg: /[bcdiefguxX]/,
        json: /[j]/,
        not_json: /[^j]/,
        text: /^[^\x25]+/,
        modulo: /^\x25{2}/,
        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijostTuvxX])/,
        key: /^([a-z_][a-z_\d]*)/i,
        key_access: /^\.([a-z_][a-z_\d]*)/i,
        index_access: /^\[(\d+)\]/,
        sign: /^[\+\-]/
    }

    function sprintf(key) {
        // `arguments` is not an array, but should be fine for this call
        return sprintf_format(sprintf_parse(key), arguments)
    }

    function vsprintf(fmt, argv) {
        return sprintf.apply(null, [fmt].concat(argv || []))
    }

    function sprintf_format(parse_tree, argv) {
        var cursor = 1, tree_length = parse_tree.length, arg, output = '', i, k, match, pad, pad_character, pad_length, is_positive, sign
        for (i = 0; i < tree_length; i++) {
            if (typeof parse_tree[i] === 'string') {
                output += parse_tree[i]
            }
            else if (Array.isArray(parse_tree[i])) {
                match = parse_tree[i] // convenience purposes only
                if (match[2]) { // keyword argument
                    arg = argv[cursor]
                    for (k = 0; k < match[2].length; k++) {
                        if (!arg.hasOwnProperty(match[2][k])) {
                            throw new Error(sprintf('[sprintf] property "%s" does not exist', match[2][k]))
                        }
                        arg = arg[match[2][k]]
                    }
                }
                else if (match[1]) { // positional argument (explicit)
                    arg = argv[match[1]]
                }
                else { // positional argument (implicit)
                    arg = argv[cursor++]
                }

                if (re.not_type.test(match[8]) && re.not_primitive.test(match[8]) && arg instanceof Function) {
                    arg = arg()
                }

                if (re.numeric_arg.test(match[8]) && (typeof arg !== 'number' && isNaN(arg))) {
                    throw new TypeError(sprintf('[sprintf] expecting number but found %T', arg))
                }

                if (re.number.test(match[8])) {
                    is_positive = arg >= 0
                }

                switch (match[8]) {
                    case 'b':
                        arg = parseInt(arg, 10).toString(2)
                        break
                    case 'c':
                        arg = String.fromCharCode(parseInt(arg, 10))
                        break
                    case 'd':
                    case 'i':
                        arg = parseInt(arg, 10)
                        break
                    case 'j':
                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
                        break
                    case 'e':
                        arg = match[7] ? parseFloat(arg).toExponential(match[7]) : parseFloat(arg).toExponential()
                        break
                    case 'f':
                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
                        break
                    case 'g':
                        arg = match[7] ? String(Number(arg.toPrecision(match[7]))) : parseFloat(arg)
                        break
                    case 'o':
                        arg = (parseInt(arg, 10) >>> 0).toString(8)
                        break
                    case 's':
                        arg = String(arg)
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 't':
                        arg = String(!!arg)
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 'T':
                        arg = Object.prototype.toString.call(arg).slice(8, -1).toLowerCase()
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 'u':
                        arg = parseInt(arg, 10) >>> 0
                        break
                    case 'v':
                        arg = arg.valueOf()
                        arg = (match[7] ? arg.substring(0, match[7]) : arg)
                        break
                    case 'x':
                        arg = (parseInt(arg, 10) >>> 0).toString(16)
                        break
                    case 'X':
                        arg = (parseInt(arg, 10) >>> 0).toString(16).toUpperCase()
                        break
                }
                if (re.json.test(match[8])) {
                    output += arg
                }
                else {
                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
                        sign = is_positive ? '+' : '-'
                        arg = arg.toString().replace(re.sign, '')
                    }
                    else {
                        sign = ''
                    }
                    pad_character = match[4] ? match[4] === '0' ? '0' : match[4].charAt(1) : ' '
                    pad_length = match[6] - (sign + arg).length
                    pad = match[6] ? (pad_length > 0 ? pad_character.repeat(pad_length) : '') : ''
                    output += match[5] ? sign + arg + pad : (pad_character === '0' ? sign + pad + arg : pad + sign + arg)
                }
            }
        }
        return output
    }

    var sprintf_cache = Object.create(null)

    function sprintf_parse(fmt) {
        if (sprintf_cache[fmt]) {
            return sprintf_cache[fmt]
        }

        var _fmt = fmt, match, parse_tree = [], arg_names = 0
        while (_fmt) {
            if ((match = re.text.exec(_fmt)) !== null) {
                parse_tree.push(match[0])
            }
            else if ((match = re.modulo.exec(_fmt)) !== null) {
                parse_tree.push('%')
            }
            else if ((match = re.placeholder.exec(_fmt)) !== null) {
                if (match[2]) {
                    arg_names |= 1
                    var field_list = [], replacement_field = match[2], field_match = []
                    if ((field_match = re.key.exec(replacement_field)) !== null) {
                        field_list.push(field_match[1])
                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
                                field_list.push(field_match[1])
                            }
                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
                                field_list.push(field_match[1])
                            }
                            else {
                                throw new SyntaxError('[sprintf] failed to parse named argument key')
                            }
                        }
                    }
                    else {
                        throw new SyntaxError('[sprintf] failed to parse named argument key')
                    }
                    match[2] = field_list
                }
                else {
                    arg_names |= 2
                }
                if (arg_names === 3) {
                    throw new Error('[sprintf] mixing positional and named placeholders is not (yet) supported')
                }
                parse_tree.push(match)
            }
            else {
                throw new SyntaxError('[sprintf] unexpected placeholder')
            }
            _fmt = _fmt.substring(match[0].length)
        }
        return sprintf_cache[fmt] = parse_tree
    }

    /**
     * export to either browser or node.js
     */
    /* eslint-disable quote-props */
    if (typeof exports !== 'undefined') {
        exports['sprintf'] = sprintf
        exports['vsprintf'] = vsprintf
    }
    if (typeof window !== 'undefined') {
        window['sprintf'] = sprintf
        window['vsprintf'] = vsprintf

        if (typeof define === 'function' && define['amd']) {
            define(function() {
                return {
                    'sprintf': sprintf,
                    'vsprintf': vsprintf
                }
            })
        }
    }
    /* eslint-enable quote-props */
}()

},{}],196:[function(require,module,exports){
'use strict'

module.exports = toSuperScript

var SUPERSCRIPTS = {
  ' ': ' ',
  '0': '⁰',
  '1': '¹',
  '2': '²',
  '3': '³',
  '4': '⁴',
  '5': '⁵',
  '6': '⁶',
  '7': '⁷',
  '8': '⁸',
  '9': '⁹',
  '+': '⁺',
  '-': '⁻',
  'a': 'ᵃ',
  'b': 'ᵇ',
  'c': 'ᶜ',
  'd': 'ᵈ',
  'e': 'ᵉ',
  'f': 'ᶠ',
  'g': 'ᵍ',
  'h': 'ʰ',
  'i': 'ⁱ',
  'j': 'ʲ',
  'k': 'ᵏ',
  'l': 'ˡ',
  'm': 'ᵐ',
  'n': 'ⁿ',
  'o': 'ᵒ',
  'p': 'ᵖ',
  'r': 'ʳ',
  's': 'ˢ',
  't': 'ᵗ',
  'u': 'ᵘ',
  'v': 'ᵛ',
  'w': 'ʷ',
  'x': 'ˣ',
  'y': 'ʸ',
  'z': 'ᶻ'
}

function toSuperScript(x) {
  return x.split('').map(function(c) {
    if(c in SUPERSCRIPTS) {
      return SUPERSCRIPTS[c]
    }
    return ''
  }).join('')
}

},{}],197:[function(require,module,exports){
"use strict"

module.exports = surfaceNets

var generateContourExtractor = require("ndarray-extract-contour")
var triangulateCube = require("triangulate-hypercube")
var zeroCrossings = require("zero-crossings")

function buildSurfaceNets(order, dtype) {
  var dimension = order.length
  var code = ["'use strict';"]
  var funcName = "surfaceNets" + order.join("_") + "d" + dtype

  //Contour extraction function
  code.push(
    "var contour=genContour({",
      "order:[", order.join(), "],",
      "scalarArguments: 3,",
      "phase:function phaseFunc(p,a,b,c) { return (p > c)|0 },")
  if(dtype === "generic") {
    code.push("getters:[0],")
  }

  //Generate vertex function
  var cubeArgs = []
  var extraArgs = []
  for(var i=0; i<dimension; ++i) {
    cubeArgs.push("d" + i)
    extraArgs.push("d" + i)
  }
  for(var i=0; i<(1<<dimension); ++i) {
    cubeArgs.push("v" + i)
    extraArgs.push("v" + i)
  }
  for(var i=0; i<(1<<dimension); ++i) {
    cubeArgs.push("p" + i)
    extraArgs.push("p" + i)
  }
  cubeArgs.push("a", "b", "c")
  extraArgs.push("a", "c")
  code.push("vertex:function vertexFunc(", cubeArgs.join(), "){")
  //Mask args together
  var maskStr = []
  for(var i=0; i<(1<<dimension); ++i) {
    maskStr.push("(p" + i + "<<" + i + ")")
  }
  //Generate variables and giganto switch statement
  code.push("var m=(", maskStr.join("+"), ")|0;if(m===0||m===", (1<<(1<<dimension))-1, "){return}")
  var extraFuncs = []
  var currentFunc = []
  if(1<<(1<<dimension) <= 128) {
    code.push("switch(m){")
    currentFunc = code
  } else {
    code.push("switch(m>>>7){")
  }
  for(var i=0; i<1<<(1<<dimension); ++i) {
    if(1<<(1<<dimension) > 128) {
      if((i%128)===0) {
        if(extraFuncs.length > 0) {
          currentFunc.push("}}")
        }
        var efName = "vExtra" + extraFuncs.length
        code.push("case ", (i>>>7), ":", efName, "(m&0x7f,", extraArgs.join(), ");break;")
        currentFunc = [
          "function ", efName, "(m,", extraArgs.join(), "){switch(m){"
        ]
        extraFuncs.push(currentFunc)
      }  
    }
    currentFunc.push("case ", (i&0x7f), ":")
    var crossings = new Array(dimension)
    var denoms = new Array(dimension)
    var crossingCount = new Array(dimension)
    var bias = new Array(dimension)
    var totalCrossings = 0
    for(var j=0; j<dimension; ++j) {
      crossings[j] = []
      denoms[j] = []
      crossingCount[j] = 0
      bias[j] = 0
    }
    for(var j=0; j<(1<<dimension); ++j) {
      for(var k=0; k<dimension; ++k) {
        var u = j ^ (1<<k)
        if(u > j) {
          continue
        }
        if(!(i&(1<<u)) !== !(i&(1<<j))) {
          var sign = 1
          if(i&(1<<u)) {
            denoms[k].push("v" + u + "-v" + j)
          } else {
            denoms[k].push("v" + j + "-v" + u)
            sign = -sign
          }
          if(sign < 0) {
            crossings[k].push("-v" + j + "-v" + u)
            crossingCount[k] += 2
          } else {
            crossings[k].push("v" + j + "+v" + u)
            crossingCount[k] -= 2            
          }
          totalCrossings += 1
          for(var l=0; l<dimension; ++l) {
            if(l === k) {
              continue
            }
            if(u&(1<<l)) {
              bias[l] += 1
            } else {
              bias[l] -= 1
            }
          }
        }
      }
    }
    var vertexStr = []
    for(var k=0; k<dimension; ++k) {
      if(crossings[k].length === 0) {
        vertexStr.push("d" + k + "-0.5")
      } else {
        var cStr = ""
        if(crossingCount[k] < 0) {
          cStr = crossingCount[k] + "*c"
        } else if(crossingCount[k] > 0) {
          cStr = "+" + crossingCount[k] + "*c"
        }
        var weight = 0.5 * (crossings[k].length / totalCrossings)
        var shift = 0.5 + 0.5 * (bias[k] / totalCrossings)
        vertexStr.push("d" + k + "-" + shift + "-" + weight + "*(" + crossings[k].join("+") + cStr + ")/(" + denoms[k].join("+") + ")")
        
      }
    }
    currentFunc.push("a.push([", vertexStr.join(), "]);",
      "break;")
  }
  code.push("}},")
  if(extraFuncs.length > 0) {
    currentFunc.push("}}")
  }

  //Create face function
  var faceArgs = []
  for(var i=0; i<(1<<(dimension-1)); ++i) {
    faceArgs.push("v" + i)
  }
  faceArgs.push("c0", "c1", "p0", "p1", "a", "b", "c")
  code.push("cell:function cellFunc(", faceArgs.join(), "){")

  var facets = triangulateCube(dimension-1)
  code.push("if(p0){b.push(",
    facets.map(function(f) {
      return "[" + f.map(function(v) {
        return "v" + v
      }) + "]"
    }).join(), ")}else{b.push(",
    facets.map(function(f) {
      var e = f.slice()
      e.reverse()
      return "[" + e.map(function(v) {
        return "v" + v
      }) + "]"
    }).join(),
    ")}}});function ", funcName, "(array,level){var verts=[],cells=[];contour(array,verts,cells,level);return {positions:verts,cells:cells};} return ", funcName, ";")

  for(var i=0; i<extraFuncs.length; ++i) {
    code.push(extraFuncs[i].join(""))
  }

  //Compile and link
  var proc = new Function("genContour", code.join(""))
  return proc(generateContourExtractor)
}

//1D case: Need to handle specially
function mesh1D(array, level) {
  var zc = zeroCrossings(array, level)
  var n = zc.length
  var npos = new Array(n)
  var ncel = new Array(n)
  for(var i=0; i<n; ++i) {
    npos[i] = [ zc[i] ]
    ncel[i] = [ i ]
  }
  return {
    positions: npos,
    cells: ncel
  }
}

var CACHE = {}

function surfaceNets(array,level) {
  if(array.dimension <= 0) {
    return { positions: [], cells: [] }
  } else if(array.dimension === 1) {
    return mesh1D(array, level)
  }
  var typesig = array.order.join() + "-" + array.dtype
  var proc = CACHE[typesig]
  var level = (+level) || 0.0
  if(!proc) {
    proc = CACHE[typesig] = buildSurfaceNets(array.order, array.dtype)
  }
  return proc(array,level)
}
},{"ndarray-extract-contour":161,"triangulate-hypercube":202,"zero-crossings":215}],198:[function(require,module,exports){
(function (process){
'use strict'

module.exports = textGet

var vectorizeText = require('vectorize-text')

var globals = window || process.global || {}
var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
globals.__TEXT_CACHE = {}

function unwrap(mesh) {
  var cells     = mesh.cells
  var positions = mesh.positions
  var data      = new Float32Array(cells.length * 6)
  var ptr       = 0
  var shapeX    = 0
  for(var i=0; i<cells.length; ++i) {
    var tri = cells[i]
    for(var j=0; j<3; ++j) {
      var point = positions[tri[j]]
      data[ptr++] = point[0]
      data[ptr++] = point[1] + 1.4
      shapeX      = Math.max(point[0], shapeX)
    }
  }
  return {
    data:  data,
    shape: shapeX
  }
}

function textGet(font, text, opts) {
  var opts = opts || {}
  var fontcache = __TEXT_CACHE[font]
   if(!fontcache) {
     fontcache = __TEXT_CACHE[font] = {
       ' ': {
         data:   new Float32Array(0),
         shape: 0.2
       }
     }
   }
   var mesh = fontcache[text]
   if(!mesh) {
     if(text.length <= 1 || !/\d/.test(text)) {
       mesh = fontcache[text] = unwrap(vectorizeText(text, {
         triangles:     true,
         font:          font,
         textAlign:     opts.textAlign || 'left',
         textBaseline:  'alphabetic'
       }))
     } else {
       var parts = text.split(/(\d|\s)/)
       var buffer = new Array(parts.length)
       var bufferSize = 0
       var shapeX = 0
       for(var i=0; i<parts.length; ++i) {
         buffer[i] = textGet(font, parts[i])
         bufferSize += buffer[i].data.length
         shapeX += buffer[i].shape
         if(i>0) {
           shapeX += 0.02
         }
       }

       var data = new Float32Array(bufferSize)
       var ptr     = 0
       var xOffset = -0.5 * shapeX
       for(var i=0; i<buffer.length; ++i) {
         var bdata = buffer[i].data
         for(var j=0; j<bdata.length; j+=2) {
           data[ptr++] = bdata[j] + xOffset
           data[ptr++] = bdata[j+1]
         }
         xOffset += buffer[i].shape + 0.02
       }

       mesh = fontcache[text] = {
         data:  data,
         shape: shapeX
       }
     }
   }

   return mesh
}

}).call(this,require('_process'))
},{"_process":174,"vectorize-text":208}],199:[function(require,module,exports){
'use strict';

module.exports = TinySDF;

var INF = 1e20;

function TinySDF(fontSize, buffer, radius, cutoff, fontFamily) {
    this.fontSize = fontSize || 24;
    this.buffer = buffer === undefined ? 3 : buffer;
    this.cutoff = cutoff || 0.25;
    this.fontFamily = fontFamily || 'sans-serif';
    this.radius = radius || 8;
    var size = this.size = this.fontSize + this.buffer * 2;

    this.canvas = document.createElement('canvas');
    this.canvas.width = this.canvas.height = size;

    this.ctx = this.canvas.getContext('2d');
    this.ctx.font = fontSize + 'px ' + this.fontFamily;
    this.ctx.textBaseline = 'middle';
    this.ctx.fillStyle = 'black';

    // temporary arrays for the distance transform
    this.gridOuter = new Float64Array(size * size);
    this.gridInner = new Float64Array(size * size);
    this.f = new Float64Array(size);
    this.d = new Float64Array(size);
    this.z = new Float64Array(size + 1);
    this.v = new Int16Array(size);

    // hack around https://bugzilla.mozilla.org/show_bug.cgi?id=737852
    this.middle = Math.round((size / 2) * (navigator.userAgent.indexOf('Gecko/') >= 0 ? 1.2 : 1));
}

TinySDF.prototype.draw = function (char) {
    this.ctx.clearRect(0, 0, this.size, this.size);
    this.ctx.fillText(char, this.buffer, this.middle);

    var imgData = this.ctx.getImageData(0, 0, this.size, this.size);
    var data = imgData.data;

    for (var i = 0; i < this.size * this.size; i++) {
        var a = data[i * 4 + 3] / 255; // alpha value
        this.gridOuter[i] = a === 1 ? 0 : a === 0 ? INF : Math.pow(Math.max(0, 0.5 - a), 2);
        this.gridInner[i] = a === 1 ? INF : a === 0 ? 0 : Math.pow(Math.max(0, a - 0.5), 2);
    }

    edt(this.gridOuter, this.size, this.size, this.f, this.d, this.v, this.z);
    edt(this.gridInner, this.size, this.size, this.f, this.d, this.v, this.z);

    for (i = 0; i < this.size * this.size; i++) {
        var d = this.gridOuter[i] - this.gridInner[i];
        var c = Math.max(0, Math.min(255, Math.round(255 - 255 * (d / this.radius + this.cutoff))));
        data[4 * i + 0] = c;
        data[4 * i + 1] = c;
        data[4 * i + 2] = c;
        data[4 * i + 3] = 255;
    }

    return imgData;
};

// 2D Euclidean distance transform by Felzenszwalb & Huttenlocher https://cs.brown.edu/~pff/dt/
function edt(data, width, height, f, d, v, z) {
    for (var x = 0; x < width; x++) {
        for (var y = 0; y < height; y++) {
            f[y] = data[y * width + x];
        }
        edt1d(f, d, v, z, height);
        for (y = 0; y < height; y++) {
            data[y * width + x] = d[y];
        }
    }
    for (y = 0; y < height; y++) {
        for (x = 0; x < width; x++) {
            f[x] = data[y * width + x];
        }
        edt1d(f, d, v, z, width);
        for (x = 0; x < width; x++) {
            data[y * width + x] = Math.sqrt(d[x]);
        }
    }
}

// 1D squared distance transform
function edt1d(f, d, v, z, n) {
    v[0] = 0;
    z[0] = -INF;
    z[1] = +INF;

    for (var q = 1, k = 0; q < n; q++) {
        var s = ((f[q] + q * q) - (f[v[k]] + v[k] * v[k])) / (2 * q - 2 * v[k]);
        while (s <= z[k]) {
            k--;
            s = ((f[q] + q * q) - (f[v[k]] + v[k] * v[k])) / (2 * q - 2 * v[k]);
        }
        k++;
        v[k] = q;
        z[k] = s;
        z[k + 1] = +INF;
    }

    for (q = 0, k = 0; q < n; q++) {
        while (z[k + 1] < q) k++;
        d[q] = (q - v[k]) * (q - v[k]) + f[v[k]];
    }
}

},{}],200:[function(require,module,exports){
// TinyColor v1.4.1
// https://github.com/bgrins/TinyColor
// Brian Grinstead, MIT License

(function(Math) {

var trimLeft = /^\s+/,
    trimRight = /\s+$/,
    tinyCounter = 0,
    mathRound = Math.round,
    mathMin = Math.min,
    mathMax = Math.max,
    mathRandom = Math.random;

function tinycolor (color, opts) {

    color = (color) ? color : '';
    opts = opts || { };

    // If input is already a tinycolor, return itself
    if (color instanceof tinycolor) {
       return color;
    }
    // If we are called as a function, call using new instead
    if (!(this instanceof tinycolor)) {
        return new tinycolor(color, opts);
    }

    var rgb = inputToRGB(color);
    this._originalInput = color,
    this._r = rgb.r,
    this._g = rgb.g,
    this._b = rgb.b,
    this._a = rgb.a,
    this._roundA = mathRound(100*this._a) / 100,
    this._format = opts.format || rgb.format;
    this._gradientType = opts.gradientType;

    // Don't let the range of [0,255] come back in [0,1].
    // Potentially lose a little bit of precision here, but will fix issues where
    // .5 gets interpreted as half of the total, instead of half of 1
    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
    if (this._r < 1) { this._r = mathRound(this._r); }
    if (this._g < 1) { this._g = mathRound(this._g); }
    if (this._b < 1) { this._b = mathRound(this._b); }

    this._ok = rgb.ok;
    this._tc_id = tinyCounter++;
}

tinycolor.prototype = {
    isDark: function() {
        return this.getBrightness() < 128;
    },
    isLight: function() {
        return !this.isDark();
    },
    isValid: function() {
        return this._ok;
    },
    getOriginalInput: function() {
      return this._originalInput;
    },
    getFormat: function() {
        return this._format;
    },
    getAlpha: function() {
        return this._a;
    },
    getBrightness: function() {
        //http://www.w3.org/TR/AERT#color-contrast
        var rgb = this.toRgb();
        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
    },
    getLuminance: function() {
        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
        var rgb = this.toRgb();
        var RsRGB, GsRGB, BsRGB, R, G, B;
        RsRGB = rgb.r/255;
        GsRGB = rgb.g/255;
        BsRGB = rgb.b/255;

        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
    },
    setAlpha: function(value) {
        this._a = boundAlpha(value);
        this._roundA = mathRound(100*this._a) / 100;
        return this;
    },
    toHsv: function() {
        var hsv = rgbToHsv(this._r, this._g, this._b);
        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
    },
    toHsvString: function() {
        var hsv = rgbToHsv(this._r, this._g, this._b);
        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
        return (this._a == 1) ?
          "hsv("  + h + ", " + s + "%, " + v + "%)" :
          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
    },
    toHsl: function() {
        var hsl = rgbToHsl(this._r, this._g, this._b);
        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
    },
    toHslString: function() {
        var hsl = rgbToHsl(this._r, this._g, this._b);
        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
        return (this._a == 1) ?
          "hsl("  + h + ", " + s + "%, " + l + "%)" :
          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
    },
    toHex: function(allow3Char) {
        return rgbToHex(this._r, this._g, this._b, allow3Char);
    },
    toHexString: function(allow3Char) {
        return '#' + this.toHex(allow3Char);
    },
    toHex8: function(allow4Char) {
        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
    },
    toHex8String: function(allow4Char) {
        return '#' + this.toHex8(allow4Char);
    },
    toRgb: function() {
        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
    },
    toRgbString: function() {
        return (this._a == 1) ?
          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
    },
    toPercentageRgb: function() {
        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
    },
    toPercentageRgbString: function() {
        return (this._a == 1) ?
          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
    },
    toName: function() {
        if (this._a === 0) {
            return "transparent";
        }

        if (this._a < 1) {
            return false;
        }

        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
    },
    toFilter: function(secondColor) {
        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
        var secondHex8String = hex8String;
        var gradientType = this._gradientType ? "GradientType = 1, " : "";

        if (secondColor) {
            var s = tinycolor(secondColor);
            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
        }

        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
    },
    toString: function(format) {
        var formatSet = !!format;
        format = format || this._format;

        var formattedString = false;
        var hasAlpha = this._a < 1 && this._a >= 0;
        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");

        if (needsAlphaFormat) {
            // Special case for "transparent", all other non-alpha formats
            // will return rgba when there is transparency.
            if (format === "name" && this._a === 0) {
                return this.toName();
            }
            return this.toRgbString();
        }
        if (format === "rgb") {
            formattedString = this.toRgbString();
        }
        if (format === "prgb") {
            formattedString = this.toPercentageRgbString();
        }
        if (format === "hex" || format === "hex6") {
            formattedString = this.toHexString();
        }
        if (format === "hex3") {
            formattedString = this.toHexString(true);
        }
        if (format === "hex4") {
            formattedString = this.toHex8String(true);
        }
        if (format === "hex8") {
            formattedString = this.toHex8String();
        }
        if (format === "name") {
            formattedString = this.toName();
        }
        if (format === "hsl") {
            formattedString = this.toHslString();
        }
        if (format === "hsv") {
            formattedString = this.toHsvString();
        }

        return formattedString || this.toHexString();
    },
    clone: function() {
        return tinycolor(this.toString());
    },

    _applyModification: function(fn, args) {
        var color = fn.apply(null, [this].concat([].slice.call(args)));
        this._r = color._r;
        this._g = color._g;
        this._b = color._b;
        this.setAlpha(color._a);
        return this;
    },
    lighten: function() {
        return this._applyModification(lighten, arguments);
    },
    brighten: function() {
        return this._applyModification(brighten, arguments);
    },
    darken: function() {
        return this._applyModification(darken, arguments);
    },
    desaturate: function() {
        return this._applyModification(desaturate, arguments);
    },
    saturate: function() {
        return this._applyModification(saturate, arguments);
    },
    greyscale: function() {
        return this._applyModification(greyscale, arguments);
    },
    spin: function() {
        return this._applyModification(spin, arguments);
    },

    _applyCombination: function(fn, args) {
        return fn.apply(null, [this].concat([].slice.call(args)));
    },
    analogous: function() {
        return this._applyCombination(analogous, arguments);
    },
    complement: function() {
        return this._applyCombination(complement, arguments);
    },
    monochromatic: function() {
        return this._applyCombination(monochromatic, arguments);
    },
    splitcomplement: function() {
        return this._applyCombination(splitcomplement, arguments);
    },
    triad: function() {
        return this._applyCombination(triad, arguments);
    },
    tetrad: function() {
        return this._applyCombination(tetrad, arguments);
    }
};

// If input is an object, force 1 into "1.0" to handle ratios properly
// String input requires "1.0" as input, so 1 will be treated as 1
tinycolor.fromRatio = function(color, opts) {
    if (typeof color == "object") {
        var newColor = {};
        for (var i in color) {
            if (color.hasOwnProperty(i)) {
                if (i === "a") {
                    newColor[i] = color[i];
                }
                else {
                    newColor[i] = convertToPercentage(color[i]);
                }
            }
        }
        color = newColor;
    }

    return tinycolor(color, opts);
};

// Given a string or object, convert that input to RGB
// Possible string inputs:
//
//     "red"
//     "#f00" or "f00"
//     "#ff0000" or "ff0000"
//     "#ff000000" or "ff000000"
//     "rgb 255 0 0" or "rgb (255, 0, 0)"
//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
//
function inputToRGB(color) {

    var rgb = { r: 0, g: 0, b: 0 };
    var a = 1;
    var s = null;
    var v = null;
    var l = null;
    var ok = false;
    var format = false;

    if (typeof color == "string") {
        color = stringInputToObject(color);
    }

    if (typeof color == "object") {
        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
            rgb = rgbToRgb(color.r, color.g, color.b);
            ok = true;
            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
        }
        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
            s = convertToPercentage(color.s);
            v = convertToPercentage(color.v);
            rgb = hsvToRgb(color.h, s, v);
            ok = true;
            format = "hsv";
        }
        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
            s = convertToPercentage(color.s);
            l = convertToPercentage(color.l);
            rgb = hslToRgb(color.h, s, l);
            ok = true;
            format = "hsl";
        }

        if (color.hasOwnProperty("a")) {
            a = color.a;
        }
    }

    a = boundAlpha(a);

    return {
        ok: ok,
        format: color.format || format,
        r: mathMin(255, mathMax(rgb.r, 0)),
        g: mathMin(255, mathMax(rgb.g, 0)),
        b: mathMin(255, mathMax(rgb.b, 0)),
        a: a
    };
}


// Conversion Functions
// --------------------

// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>

// `rgbToRgb`
// Handle bounds / percentage checking to conform to CSS color spec
// <http://www.w3.org/TR/css3-color/>
// *Assumes:* r, g, b in [0, 255] or [0, 1]
// *Returns:* { r, g, b } in [0, 255]
function rgbToRgb(r, g, b){
    return {
        r: bound01(r, 255) * 255,
        g: bound01(g, 255) * 255,
        b: bound01(b, 255) * 255
    };
}

// `rgbToHsl`
// Converts an RGB color value to HSL.
// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
// *Returns:* { h, s, l } in [0,1]
function rgbToHsl(r, g, b) {

    r = bound01(r, 255);
    g = bound01(g, 255);
    b = bound01(b, 255);

    var max = mathMax(r, g, b), min = mathMin(r, g, b);
    var h, s, l = (max + min) / 2;

    if(max == min) {
        h = s = 0; // achromatic
    }
    else {
        var d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        switch(max) {
            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
            case g: h = (b - r) / d + 2; break;
            case b: h = (r - g) / d + 4; break;
        }

        h /= 6;
    }

    return { h: h, s: s, l: l };
}

// `hslToRgb`
// Converts an HSL color value to RGB.
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
// *Returns:* { r, g, b } in the set [0, 255]
function hslToRgb(h, s, l) {
    var r, g, b;

    h = bound01(h, 360);
    s = bound01(s, 100);
    l = bound01(l, 100);

    function hue2rgb(p, q, t) {
        if(t < 0) t += 1;
        if(t > 1) t -= 1;
        if(t < 1/6) return p + (q - p) * 6 * t;
        if(t < 1/2) return q;
        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
        return p;
    }

    if(s === 0) {
        r = g = b = l; // achromatic
    }
    else {
        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
        var p = 2 * l - q;
        r = hue2rgb(p, q, h + 1/3);
        g = hue2rgb(p, q, h);
        b = hue2rgb(p, q, h - 1/3);
    }

    return { r: r * 255, g: g * 255, b: b * 255 };
}

// `rgbToHsv`
// Converts an RGB color value to HSV
// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
// *Returns:* { h, s, v } in [0,1]
function rgbToHsv(r, g, b) {

    r = bound01(r, 255);
    g = bound01(g, 255);
    b = bound01(b, 255);

    var max = mathMax(r, g, b), min = mathMin(r, g, b);
    var h, s, v = max;

    var d = max - min;
    s = max === 0 ? 0 : d / max;

    if(max == min) {
        h = 0; // achromatic
    }
    else {
        switch(max) {
            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
            case g: h = (b - r) / d + 2; break;
            case b: h = (r - g) / d + 4; break;
        }
        h /= 6;
    }
    return { h: h, s: s, v: v };
}

// `hsvToRgb`
// Converts an HSV color value to RGB.
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
// *Returns:* { r, g, b } in the set [0, 255]
 function hsvToRgb(h, s, v) {

    h = bound01(h, 360) * 6;
    s = bound01(s, 100);
    v = bound01(v, 100);

    var i = Math.floor(h),
        f = h - i,
        p = v * (1 - s),
        q = v * (1 - f * s),
        t = v * (1 - (1 - f) * s),
        mod = i % 6,
        r = [v, q, p, p, t, v][mod],
        g = [t, v, v, q, p, p][mod],
        b = [p, p, t, v, v, q][mod];

    return { r: r * 255, g: g * 255, b: b * 255 };
}

// `rgbToHex`
// Converts an RGB color to hex
// Assumes r, g, and b are contained in the set [0, 255]
// Returns a 3 or 6 character hex
function rgbToHex(r, g, b, allow3Char) {

    var hex = [
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16))
    ];

    // Return a 3 character hex if possible
    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
    }

    return hex.join("");
}

// `rgbaToHex`
// Converts an RGBA color plus alpha transparency to hex
// Assumes r, g, b are contained in the set [0, 255] and
// a in [0, 1]. Returns a 4 or 8 character rgba hex
function rgbaToHex(r, g, b, a, allow4Char) {

    var hex = [
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16)),
        pad2(convertDecimalToHex(a))
    ];

    // Return a 4 character hex if possible
    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
    }

    return hex.join("");
}

// `rgbaToArgbHex`
// Converts an RGBA color to an ARGB Hex8 string
// Rarely used, but required for "toFilter()"
function rgbaToArgbHex(r, g, b, a) {

    var hex = [
        pad2(convertDecimalToHex(a)),
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16))
    ];

    return hex.join("");
}

// `equals`
// Can be called with any tinycolor input
tinycolor.equals = function (color1, color2) {
    if (!color1 || !color2) { return false; }
    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
};

tinycolor.random = function() {
    return tinycolor.fromRatio({
        r: mathRandom(),
        g: mathRandom(),
        b: mathRandom()
    });
};


// Modification Functions
// ----------------------
// Thanks to less.js for some of the basics here
// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>

function desaturate(color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.s -= amount / 100;
    hsl.s = clamp01(hsl.s);
    return tinycolor(hsl);
}

function saturate(color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.s += amount / 100;
    hsl.s = clamp01(hsl.s);
    return tinycolor(hsl);
}

function greyscale(color) {
    return tinycolor(color).desaturate(100);
}

function lighten (color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.l += amount / 100;
    hsl.l = clamp01(hsl.l);
    return tinycolor(hsl);
}

function brighten(color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var rgb = tinycolor(color).toRgb();
    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
    return tinycolor(rgb);
}

function darken (color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.l -= amount / 100;
    hsl.l = clamp01(hsl.l);
    return tinycolor(hsl);
}

// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
// Values outside of this range will be wrapped into this range.
function spin(color, amount) {
    var hsl = tinycolor(color).toHsl();
    var hue = (hsl.h + amount) % 360;
    hsl.h = hue < 0 ? 360 + hue : hue;
    return tinycolor(hsl);
}

// Combination Functions
// ---------------------
// Thanks to jQuery xColor for some of the ideas behind these
// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>

function complement(color) {
    var hsl = tinycolor(color).toHsl();
    hsl.h = (hsl.h + 180) % 360;
    return tinycolor(hsl);
}

function triad(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [
        tinycolor(color),
        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
    ];
}

function tetrad(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [
        tinycolor(color),
        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
    ];
}

function splitcomplement(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [
        tinycolor(color),
        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
    ];
}

function analogous(color, results, slices) {
    results = results || 6;
    slices = slices || 30;

    var hsl = tinycolor(color).toHsl();
    var part = 360 / slices;
    var ret = [tinycolor(color)];

    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
        hsl.h = (hsl.h + part) % 360;
        ret.push(tinycolor(hsl));
    }
    return ret;
}

function monochromatic(color, results) {
    results = results || 6;
    var hsv = tinycolor(color).toHsv();
    var h = hsv.h, s = hsv.s, v = hsv.v;
    var ret = [];
    var modification = 1 / results;

    while (results--) {
        ret.push(tinycolor({ h: h, s: s, v: v}));
        v = (v + modification) % 1;
    }

    return ret;
}

// Utility Functions
// ---------------------

tinycolor.mix = function(color1, color2, amount) {
    amount = (amount === 0) ? 0 : (amount || 50);

    var rgb1 = tinycolor(color1).toRgb();
    var rgb2 = tinycolor(color2).toRgb();

    var p = amount / 100;

    var rgba = {
        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
    };

    return tinycolor(rgba);
};


// Readability Functions
// ---------------------
// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)

// `contrast`
// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
tinycolor.readability = function(color1, color2) {
    var c1 = tinycolor(color1);
    var c2 = tinycolor(color2);
    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
};

// `isReadable`
// Ensure that foreground and background color combinations meet WCAG2 guidelines.
// The third argument is an optional Object.
//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.

// *Example*
//    tinycolor.isReadable("#000", "#111") => false
//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
tinycolor.isReadable = function(color1, color2, wcag2) {
    var readability = tinycolor.readability(color1, color2);
    var wcag2Parms, out;

    out = false;

    wcag2Parms = validateWCAG2Parms(wcag2);
    switch (wcag2Parms.level + wcag2Parms.size) {
        case "AAsmall":
        case "AAAlarge":
            out = readability >= 4.5;
            break;
        case "AAlarge":
            out = readability >= 3;
            break;
        case "AAAsmall":
            out = readability >= 7;
            break;
    }
    return out;

};

// `mostReadable`
// Given a base color and a list of possible foreground or background
// colors for that base, returns the most readable color.
// Optionally returns Black or White if the most readable color is unreadable.
// *Example*
//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
tinycolor.mostReadable = function(baseColor, colorList, args) {
    var bestColor = null;
    var bestScore = 0;
    var readability;
    var includeFallbackColors, level, size ;
    args = args || {};
    includeFallbackColors = args.includeFallbackColors ;
    level = args.level;
    size = args.size;

    for (var i= 0; i < colorList.length ; i++) {
        readability = tinycolor.readability(baseColor, colorList[i]);
        if (readability > bestScore) {
            bestScore = readability;
            bestColor = tinycolor(colorList[i]);
        }
    }

    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
        return bestColor;
    }
    else {
        args.includeFallbackColors=false;
        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
    }
};


// Big List of Colors
// ------------------
// <http://www.w3.org/TR/css3-color/#svg-color>
var names = tinycolor.names = {
    aliceblue: "f0f8ff",
    antiquewhite: "faebd7",
    aqua: "0ff",
    aquamarine: "7fffd4",
    azure: "f0ffff",
    beige: "f5f5dc",
    bisque: "ffe4c4",
    black: "000",
    blanchedalmond: "ffebcd",
    blue: "00f",
    blueviolet: "8a2be2",
    brown: "a52a2a",
    burlywood: "deb887",
    burntsienna: "ea7e5d",
    cadetblue: "5f9ea0",
    chartreuse: "7fff00",
    chocolate: "d2691e",
    coral: "ff7f50",
    cornflowerblue: "6495ed",
    cornsilk: "fff8dc",
    crimson: "dc143c",
    cyan: "0ff",
    darkblue: "00008b",
    darkcyan: "008b8b",
    darkgoldenrod: "b8860b",
    darkgray: "a9a9a9",
    darkgreen: "006400",
    darkgrey: "a9a9a9",
    darkkhaki: "bdb76b",
    darkmagenta: "8b008b",
    darkolivegreen: "556b2f",
    darkorange: "ff8c00",
    darkorchid: "9932cc",
    darkred: "8b0000",
    darksalmon: "e9967a",
    darkseagreen: "8fbc8f",
    darkslateblue: "483d8b",
    darkslategray: "2f4f4f",
    darkslategrey: "2f4f4f",
    darkturquoise: "00ced1",
    darkviolet: "9400d3",
    deeppink: "ff1493",
    deepskyblue: "00bfff",
    dimgray: "696969",
    dimgrey: "696969",
    dodgerblue: "1e90ff",
    firebrick: "b22222",
    floralwhite: "fffaf0",
    forestgreen: "228b22",
    fuchsia: "f0f",
    gainsboro: "dcdcdc",
    ghostwhite: "f8f8ff",
    gold: "ffd700",
    goldenrod: "daa520",
    gray: "808080",
    green: "008000",
    greenyellow: "adff2f",
    grey: "808080",
    honeydew: "f0fff0",
    hotpink: "ff69b4",
    indianred: "cd5c5c",
    indigo: "4b0082",
    ivory: "fffff0",
    khaki: "f0e68c",
    lavender: "e6e6fa",
    lavenderblush: "fff0f5",
    lawngreen: "7cfc00",
    lemonchiffon: "fffacd",
    lightblue: "add8e6",
    lightcoral: "f08080",
    lightcyan: "e0ffff",
    lightgoldenrodyellow: "fafad2",
    lightgray: "d3d3d3",
    lightgreen: "90ee90",
    lightgrey: "d3d3d3",
    lightpink: "ffb6c1",
    lightsalmon: "ffa07a",
    lightseagreen: "20b2aa",
    lightskyblue: "87cefa",
    lightslategray: "789",
    lightslategrey: "789",
    lightsteelblue: "b0c4de",
    lightyellow: "ffffe0",
    lime: "0f0",
    limegreen: "32cd32",
    linen: "faf0e6",
    magenta: "f0f",
    maroon: "800000",
    mediumaquamarine: "66cdaa",
    mediumblue: "0000cd",
    mediumorchid: "ba55d3",
    mediumpurple: "9370db",
    mediumseagreen: "3cb371",
    mediumslateblue: "7b68ee",
    mediumspringgreen: "00fa9a",
    mediumturquoise: "48d1cc",
    mediumvioletred: "c71585",
    midnightblue: "191970",
    mintcream: "f5fffa",
    mistyrose: "ffe4e1",
    moccasin: "ffe4b5",
    navajowhite: "ffdead",
    navy: "000080",
    oldlace: "fdf5e6",
    olive: "808000",
    olivedrab: "6b8e23",
    orange: "ffa500",
    orangered: "ff4500",
    orchid: "da70d6",
    palegoldenrod: "eee8aa",
    palegreen: "98fb98",
    paleturquoise: "afeeee",
    palevioletred: "db7093",
    papayawhip: "ffefd5",
    peachpuff: "ffdab9",
    peru: "cd853f",
    pink: "ffc0cb",
    plum: "dda0dd",
    powderblue: "b0e0e6",
    purple: "800080",
    rebeccapurple: "663399",
    red: "f00",
    rosybrown: "bc8f8f",
    royalblue: "4169e1",
    saddlebrown: "8b4513",
    salmon: "fa8072",
    sandybrown: "f4a460",
    seagreen: "2e8b57",
    seashell: "fff5ee",
    sienna: "a0522d",
    silver: "c0c0c0",
    skyblue: "87ceeb",
    slateblue: "6a5acd",
    slategray: "708090",
    slategrey: "708090",
    snow: "fffafa",
    springgreen: "00ff7f",
    steelblue: "4682b4",
    tan: "d2b48c",
    teal: "008080",
    thistle: "d8bfd8",
    tomato: "ff6347",
    turquoise: "40e0d0",
    violet: "ee82ee",
    wheat: "f5deb3",
    white: "fff",
    whitesmoke: "f5f5f5",
    yellow: "ff0",
    yellowgreen: "9acd32"
};

// Make it easy to access colors via `hexNames[hex]`
var hexNames = tinycolor.hexNames = flip(names);


// Utilities
// ---------

// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
function flip(o) {
    var flipped = { };
    for (var i in o) {
        if (o.hasOwnProperty(i)) {
            flipped[o[i]] = i;
        }
    }
    return flipped;
}

// Return a valid alpha value [0,1] with all invalid values being set to 1
function boundAlpha(a) {
    a = parseFloat(a);

    if (isNaN(a) || a < 0 || a > 1) {
        a = 1;
    }

    return a;
}

// Take input from [0, n] and return it as [0, 1]
function bound01(n, max) {
    if (isOnePointZero(n)) { n = "100%"; }

    var processPercent = isPercentage(n);
    n = mathMin(max, mathMax(0, parseFloat(n)));

    // Automatically convert percentage into number
    if (processPercent) {
        n = parseInt(n * max, 10) / 100;
    }

    // Handle floating point rounding errors
    if ((Math.abs(n - max) < 0.000001)) {
        return 1;
    }

    // Convert into [0, 1] range if it isn't already
    return (n % max) / parseFloat(max);
}

// Force a number between 0 and 1
function clamp01(val) {
    return mathMin(1, mathMax(0, val));
}

// Parse a base-16 hex value into a base-10 integer
function parseIntFromHex(val) {
    return parseInt(val, 16);
}

// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
function isOnePointZero(n) {
    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
}

// Check to see if string passed in is a percentage
function isPercentage(n) {
    return typeof n === "string" && n.indexOf('%') != -1;
}

// Force a hex value to have 2 characters
function pad2(c) {
    return c.length == 1 ? '0' + c : '' + c;
}

// Replace a decimal with it's percentage value
function convertToPercentage(n) {
    if (n <= 1) {
        n = (n * 100) + "%";
    }

    return n;
}

// Converts a decimal to a hex value
function convertDecimalToHex(d) {
    return Math.round(parseFloat(d) * 255).toString(16);
}
// Converts a hex value to a decimal
function convertHexToDecimal(h) {
    return (parseIntFromHex(h) / 255);
}

var matchers = (function() {

    // <http://www.w3.org/TR/css3-values/#integers>
    var CSS_INTEGER = "[-\\+]?\\d+%?";

    // <http://www.w3.org/TR/css3-values/#number-value>
    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";

    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";

    // Actual matching.
    // Parentheses and commas are optional, but not required.
    // Whitespace can take the place of commas or opening paren
    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";

    return {
        CSS_UNIT: new RegExp(CSS_UNIT),
        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
    };
})();

// `isValidCSSUnit`
// Take in a single string / number and check to see if it looks like a CSS unit
// (see `matchers` above for definition).
function isValidCSSUnit(color) {
    return !!matchers.CSS_UNIT.exec(color);
}

// `stringInputToObject`
// Permissive string parsing.  Take in a number of formats, and output an object
// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
function stringInputToObject(color) {

    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
    var named = false;
    if (names[color]) {
        color = names[color];
        named = true;
    }
    else if (color == 'transparent') {
        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
    }

    // Try to match string input using regular expressions.
    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
    // Just return an object and let the conversion functions handle that.
    // This way the result will be the same whether the tinycolor is initialized with string or object.
    var match;
    if ((match = matchers.rgb.exec(color))) {
        return { r: match[1], g: match[2], b: match[3] };
    }
    if ((match = matchers.rgba.exec(color))) {
        return { r: match[1], g: match[2], b: match[3], a: match[4] };
    }
    if ((match = matchers.hsl.exec(color))) {
        return { h: match[1], s: match[2], l: match[3] };
    }
    if ((match = matchers.hsla.exec(color))) {
        return { h: match[1], s: match[2], l: match[3], a: match[4] };
    }
    if ((match = matchers.hsv.exec(color))) {
        return { h: match[1], s: match[2], v: match[3] };
    }
    if ((match = matchers.hsva.exec(color))) {
        return { h: match[1], s: match[2], v: match[3], a: match[4] };
    }
    if ((match = matchers.hex8.exec(color))) {
        return {
            r: parseIntFromHex(match[1]),
            g: parseIntFromHex(match[2]),
            b: parseIntFromHex(match[3]),
            a: convertHexToDecimal(match[4]),
            format: named ? "name" : "hex8"
        };
    }
    if ((match = matchers.hex6.exec(color))) {
        return {
            r: parseIntFromHex(match[1]),
            g: parseIntFromHex(match[2]),
            b: parseIntFromHex(match[3]),
            format: named ? "name" : "hex"
        };
    }
    if ((match = matchers.hex4.exec(color))) {
        return {
            r: parseIntFromHex(match[1] + '' + match[1]),
            g: parseIntFromHex(match[2] + '' + match[2]),
            b: parseIntFromHex(match[3] + '' + match[3]),
            a: convertHexToDecimal(match[4] + '' + match[4]),
            format: named ? "name" : "hex8"
        };
    }
    if ((match = matchers.hex3.exec(color))) {
        return {
            r: parseIntFromHex(match[1] + '' + match[1]),
            g: parseIntFromHex(match[2] + '' + match[2]),
            b: parseIntFromHex(match[3] + '' + match[3]),
            format: named ? "name" : "hex"
        };
    }

    return false;
}

function validateWCAG2Parms(parms) {
    // return valid WCAG2 parms for isReadable.
    // If input parms are invalid, return {"level":"AA", "size":"small"}
    var level, size;
    parms = parms || {"level":"AA", "size":"small"};
    level = (parms.level || "AA").toUpperCase();
    size = (parms.size || "small").toLowerCase();
    if (level !== "AA" && level !== "AAA") {
        level = "AA";
    }
    if (size !== "small" && size !== "large") {
        size = "small";
    }
    return {"level":level, "size":size};
}

// Node: Export function
if (typeof module !== "undefined" && module.exports) {
    module.exports = tinycolor;
}
// AMD/requirejs: Define the module
else if (typeof define === 'function' && define.amd) {
    define(function () {return tinycolor;});
}
// Browser: Expose to window
else {
    window.tinycolor = tinycolor;
}

})(Math);

},{}],201:[function(require,module,exports){
'use strict'

var parseUnit = require('parse-unit')

module.exports = toPX

var PIXELS_PER_INCH = 96

function getPropertyInPX(element, prop) {
  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
  return parts[0] * toPX(parts[1], element)
}

//This brutal hack is needed
function getSizeBrutal(unit, element) {
  var testDIV = document.createElement('div')
  testDIV.style['font-size'] = '128' + unit
  element.appendChild(testDIV)
  var size = getPropertyInPX(testDIV, 'font-size') / 128
  element.removeChild(testDIV)
  return size
}

function toPX(str, element) {
  element = element || document.body
  str = (str || 'px').trim().toLowerCase()
  if(element === window || element === document) {
    element = document.body 
  }
  switch(str) {
    case '%':  //Ambiguous, not sure if we should use width or height
      return element.clientHeight / 100.0
    case 'ch':
    case 'ex':
      return getSizeBrutal(str, element)
    case 'em':
      return getPropertyInPX(element, 'font-size')
    case 'rem':
      return getPropertyInPX(document.body, 'font-size')
    case 'vw':
      return window.innerWidth/100
    case 'vh':
      return window.innerHeight/100
    case 'vmin':
      return Math.min(window.innerWidth, window.innerHeight) / 100
    case 'vmax':
      return Math.max(window.innerWidth, window.innerHeight) / 100
    case 'in':
      return PIXELS_PER_INCH
    case 'cm':
      return PIXELS_PER_INCH / 2.54
    case 'mm':
      return PIXELS_PER_INCH / 25.4
    case 'pt':
      return PIXELS_PER_INCH / 72
    case 'pc':
      return PIXELS_PER_INCH / 6
  }
  return 1
}
},{"parse-unit":167}],202:[function(require,module,exports){
"use strict"

module.exports = triangulateCube

var perm = require("permutation-rank")
var sgn = require("permutation-parity")
var gamma = require("gamma")

function triangulateCube(dimension) {
  if(dimension < 0) {
    return [ ]
  }
  if(dimension === 0) {
    return [ [0] ]
  }
  var dfactorial = Math.round(gamma(dimension+1))|0
  var result = []
  for(var i=0; i<dfactorial; ++i) {
    var p = perm.unrank(dimension, i)
    var cell = [ 0 ]
    var v = 0
    for(var j=0; j<p.length; ++j) {
      v += (1<<p[j])
      cell.push(v)
    }
    if(sgn(p) < 1) {
      cell[0] = v
      cell[dimension] = 0
    }
    result.push(cell)
  }
  return result
}
},{"gamma":71,"permutation-parity":168,"permutation-rank":169}],203:[function(require,module,exports){
"use strict"

module.exports = twoProduct

var SPLITTER = +(Math.pow(2, 27) + 1.0)

function twoProduct(a, b, result) {
  var x = a * b

  var c = SPLITTER * a
  var abig = c - a
  var ahi = c - abig
  var alo = a - ahi

  var d = SPLITTER * b
  var bbig = d - b
  var bhi = d - bbig
  var blo = b - bhi

  var err1 = x - (ahi * bhi)
  var err2 = err1 - (alo * bhi)
  var err3 = err2 - (ahi * blo)

  var y = alo * blo - err3

  if(result) {
    result[0] = y
    result[1] = x
    return result
  }

  return [ y, x ]
}
},{}],204:[function(require,module,exports){
"use strict"

module.exports = fastTwoSum

function fastTwoSum(a, b, result) {
	var x = a + b
	var bv = x - a
	var av = x - bv
	var br = b - bv
	var ar = a - av
	if(result) {
		result[0] = ar + br
		result[1] = x
		return result
	}
	return [ar+br, x]
}
},{}],205:[function(require,module,exports){
(function (global,Buffer){
'use strict'

var bits = require('bit-twiddle')
var dup = require('dup')

//Legacy pool support
if(!global.__TYPEDARRAY_POOL) {
  global.__TYPEDARRAY_POOL = {
      UINT8   : dup([32, 0])
    , UINT16  : dup([32, 0])
    , UINT32  : dup([32, 0])
    , INT8    : dup([32, 0])
    , INT16   : dup([32, 0])
    , INT32   : dup([32, 0])
    , FLOAT   : dup([32, 0])
    , DOUBLE  : dup([32, 0])
    , DATA    : dup([32, 0])
    , UINT8C  : dup([32, 0])
    , BUFFER  : dup([32, 0])
  }
}

var hasUint8C = (typeof Uint8ClampedArray) !== 'undefined'
var POOL = global.__TYPEDARRAY_POOL

//Upgrade pool
if(!POOL.UINT8C) {
  POOL.UINT8C = dup([32, 0])
}
if(!POOL.BUFFER) {
  POOL.BUFFER = dup([32, 0])
}

//New technique: Only allocate from ArrayBufferView and Buffer
var DATA    = POOL.DATA
  , BUFFER  = POOL.BUFFER

exports.free = function free(array) {
  if(Buffer.isBuffer(array)) {
    BUFFER[bits.log2(array.length)].push(array)
  } else {
    if(Object.prototype.toString.call(array) !== '[object ArrayBuffer]') {
      array = array.buffer
    }
    if(!array) {
      return
    }
    var n = array.length || array.byteLength
    var log_n = bits.log2(n)|0
    DATA[log_n].push(array)
  }
}

function freeArrayBuffer(buffer) {
  if(!buffer) {
    return
  }
  var n = buffer.length || buffer.byteLength
  var log_n = bits.log2(n)
  DATA[log_n].push(buffer)
}

function freeTypedArray(array) {
  freeArrayBuffer(array.buffer)
}

exports.freeUint8 =
exports.freeUint16 =
exports.freeUint32 =
exports.freeInt8 =
exports.freeInt16 =
exports.freeInt32 =
exports.freeFloat32 = 
exports.freeFloat =
exports.freeFloat64 = 
exports.freeDouble = 
exports.freeUint8Clamped = 
exports.freeDataView = freeTypedArray

exports.freeArrayBuffer = freeArrayBuffer

exports.freeBuffer = function freeBuffer(array) {
  BUFFER[bits.log2(array.length)].push(array)
}

exports.malloc = function malloc(n, dtype) {
  if(dtype === undefined || dtype === 'arraybuffer') {
    return mallocArrayBuffer(n)
  } else {
    switch(dtype) {
      case 'uint8':
        return mallocUint8(n)
      case 'uint16':
        return mallocUint16(n)
      case 'uint32':
        return mallocUint32(n)
      case 'int8':
        return mallocInt8(n)
      case 'int16':
        return mallocInt16(n)
      case 'int32':
        return mallocInt32(n)
      case 'float':
      case 'float32':
        return mallocFloat(n)
      case 'double':
      case 'float64':
        return mallocDouble(n)
      case 'uint8_clamped':
        return mallocUint8Clamped(n)
      case 'buffer':
        return mallocBuffer(n)
      case 'data':
      case 'dataview':
        return mallocDataView(n)

      default:
        return null
    }
  }
  return null
}

function mallocArrayBuffer(n) {
  var n = bits.nextPow2(n)
  var log_n = bits.log2(n)
  var d = DATA[log_n]
  if(d.length > 0) {
    return d.pop()
  }
  return new ArrayBuffer(n)
}
exports.mallocArrayBuffer = mallocArrayBuffer

function mallocUint8(n) {
  return new Uint8Array(mallocArrayBuffer(n), 0, n)
}
exports.mallocUint8 = mallocUint8

function mallocUint16(n) {
  return new Uint16Array(mallocArrayBuffer(2*n), 0, n)
}
exports.mallocUint16 = mallocUint16

function mallocUint32(n) {
  return new Uint32Array(mallocArrayBuffer(4*n), 0, n)
}
exports.mallocUint32 = mallocUint32

function mallocInt8(n) {
  return new Int8Array(mallocArrayBuffer(n), 0, n)
}
exports.mallocInt8 = mallocInt8

function mallocInt16(n) {
  return new Int16Array(mallocArrayBuffer(2*n), 0, n)
}
exports.mallocInt16 = mallocInt16

function mallocInt32(n) {
  return new Int32Array(mallocArrayBuffer(4*n), 0, n)
}
exports.mallocInt32 = mallocInt32

function mallocFloat(n) {
  return new Float32Array(mallocArrayBuffer(4*n), 0, n)
}
exports.mallocFloat32 = exports.mallocFloat = mallocFloat

function mallocDouble(n) {
  return new Float64Array(mallocArrayBuffer(8*n), 0, n)
}
exports.mallocFloat64 = exports.mallocDouble = mallocDouble

function mallocUint8Clamped(n) {
  if(hasUint8C) {
    return new Uint8ClampedArray(mallocArrayBuffer(n), 0, n)
  } else {
    return mallocUint8(n)
  }
}
exports.mallocUint8Clamped = mallocUint8Clamped

function mallocDataView(n) {
  return new DataView(mallocArrayBuffer(n), 0, n)
}
exports.mallocDataView = mallocDataView

function mallocBuffer(n) {
  n = bits.nextPow2(n)
  var log_n = bits.log2(n)
  var cache = BUFFER[log_n]
  if(cache.length > 0) {
    return cache.pop()
  }
  return new Buffer(n)
}
exports.mallocBuffer = mallocBuffer

exports.clearCache = function clearCache() {
  for(var i=0; i<32; ++i) {
    POOL.UINT8[i].length = 0
    POOL.UINT16[i].length = 0
    POOL.UINT32[i].length = 0
    POOL.INT8[i].length = 0
    POOL.INT16[i].length = 0
    POOL.INT32[i].length = 0
    POOL.FLOAT[i].length = 0
    POOL.DOUBLE[i].length = 0
    POOL.UINT8C[i].length = 0
    DATA[i].length = 0
    BUFFER[i].length = 0
  }
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"bit-twiddle":31,"buffer":40,"dup":64}],206:[function(require,module,exports){
"use strict"; "use restrict";

module.exports = UnionFind;

function UnionFind(count) {
  this.roots = new Array(count);
  this.ranks = new Array(count);
  
  for(var i=0; i<count; ++i) {
    this.roots[i] = i;
    this.ranks[i] = 0;
  }
}

var proto = UnionFind.prototype

Object.defineProperty(proto, "length", {
  "get": function() {
    return this.roots.length
  }
})

proto.makeSet = function() {
  var n = this.roots.length;
  this.roots.push(n);
  this.ranks.push(0);
  return n;
}

proto.find = function(x) {
  var x0 = x
  var roots = this.roots;
  while(roots[x] !== x) {
    x = roots[x]
  }
  while(roots[x0] !== x) {
    var y = roots[x0]
    roots[x0] = x
    x0 = y
  }
  return x;
}

proto.link = function(x, y) {
  var xr = this.find(x)
    , yr = this.find(y);
  if(xr === yr) {
    return;
  }
  var ranks = this.ranks
    , roots = this.roots
    , xd    = ranks[xr]
    , yd    = ranks[yr];
  if(xd < yd) {
    roots[xr] = yr;
  } else if(yd < xd) {
    roots[yr] = xr;
  } else {
    roots[yr] = xr;
    ++ranks[xr];
  }
}
},{}],207:[function(require,module,exports){
"use strict"

function unique_pred(list, compare) {
  var ptr = 1
    , len = list.length
    , a=list[0], b=list[0]
  for(var i=1; i<len; ++i) {
    b = a
    a = list[i]
    if(compare(a, b)) {
      if(i === ptr) {
        ptr++
        continue
      }
      list[ptr++] = a
    }
  }
  list.length = ptr
  return list
}

function unique_eq(list) {
  var ptr = 1
    , len = list.length
    , a=list[0], b = list[0]
  for(var i=1; i<len; ++i, b=a) {
    b = a
    a = list[i]
    if(a !== b) {
      if(i === ptr) {
        ptr++
        continue
      }
      list[ptr++] = a
    }
  }
  list.length = ptr
  return list
}

function unique(list, compare, sorted) {
  if(list.length === 0) {
    return list
  }
  if(compare) {
    if(!sorted) {
      list.sort(compare)
    }
    return unique_pred(list, compare)
  }
  if(!sorted) {
    list.sort()
  }
  return unique_eq(list)
}

module.exports = unique

},{}],208:[function(require,module,exports){
"use strict"

module.exports = createText

var vectorizeText = require("./lib/vtext")
var defaultCanvas = null
var defaultContext = null

if(typeof document !== 'undefined') {
  defaultCanvas = document.createElement('canvas')
  defaultCanvas.width = 8192
  defaultCanvas.height = 1024
  defaultContext = defaultCanvas.getContext("2d")
}

function createText(str, options) {
  if((typeof options !== "object") || (options === null)) {
    options = {}
  }
  return vectorizeText(
    str,
    options.canvas || defaultCanvas,
    options.context || defaultContext,
    options)
}

},{"./lib/vtext":209}],209:[function(require,module,exports){
"use strict"

module.exports = vectorizeText
module.exports.processPixels = processPixels

var surfaceNets = require('surface-nets')
var ndarray = require('ndarray')
var simplify = require('simplify-planar-graph')
var cleanPSLG = require('clean-pslg')
var cdt2d = require('cdt2d')
var toPolygonCrappy = require('planar-graph-to-polyline')

function transformPositions(positions, options, size) {
  var align = options.textAlign || "start"
  var baseline = options.textBaseline || "alphabetic"

  var lo = [1<<30, 1<<30]
  var hi = [0,0]
  var n = positions.length
  for(var i=0; i<n; ++i) {
    var p = positions[i]
    for(var j=0; j<2; ++j) {
      lo[j] = Math.min(lo[j], p[j])|0
      hi[j] = Math.max(hi[j], p[j])|0
    }
  }

  var xShift = 0
  switch(align) {
    case "center":
      xShift = -0.5 * (lo[0] + hi[0])
    break

    case "right":
    case "end":
      xShift = -hi[0]
    break

    case "left":
    case "start":
      xShift = -lo[0]
    break

    default:
      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
  }

  var yShift = 0
  switch(baseline) {
    case "hanging":
    case "top":
      yShift = -lo[1]
    break

    case "middle":
      yShift = -0.5 * (lo[1] + hi[1])
    break

    case "alphabetic":
    case "ideographic":
      yShift = -3 * size
    break

    case "bottom":
      yShift = -hi[1]
    break

    default:
      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
  }

  var scale = 1.0 / size
  if("lineHeight" in options) {
    scale *= +options.lineHeight
  } else if("width" in options) {
    scale = options.width / (hi[0] - lo[0])
  } else if("height" in options) {
    scale = options.height / (hi[1] - lo[1])
  }

  return positions.map(function(p) {
    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
  })
}

function getPixels(canvas, context, str, size) {
  var width = Math.ceil(context.measureText(str).width + 2*size)|0
  if(width > 8192) {
    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
  }
  var height = 3 * size
  if(canvas.height < height) {
    canvas.height = height
  }

  context.fillStyle = "#000"
  context.fillRect(0, 0, canvas.width, canvas.height)

  context.fillStyle = "#fff"
  context.fillText(str, size, 2*size)

  //Cut pixels from image
  var pixelData = context.getImageData(0, 0, width, height)
  var pixels = ndarray(pixelData.data, [height, width, 4])

  return pixels.pick(-1,-1,0).transpose(1,0)
}

function getContour(pixels, doSimplify) {
  var contour = surfaceNets(pixels, 128)
  if(doSimplify) {
    return simplify(contour.cells, contour.positions, 0.25)
  }
  return {
    edges: contour.cells,
    positions: contour.positions
  }
}

function processPixelsImpl(pixels, options, size, simplify) {
  //Extract contour
  var contour = getContour(pixels, simplify)

  //Apply warp to positions
  var positions = transformPositions(contour.positions, options, size)
  var edges     = contour.edges
  var flip = "ccw" === options.orientation

  //Clean up the PSLG, resolve self intersections, etc.
  cleanPSLG(positions, edges)

  //If triangulate flag passed, triangulate the result
  if(options.polygons || options.polygon || options.polyline) {
    var result = toPolygonCrappy(edges, positions)
    var nresult = new Array(result.length)
    for(var i=0; i<result.length; ++i) {
      var loops = result[i]
      var nloops = new Array(loops.length)
      for(var j=0; j<loops.length; ++j) {
        var loop = loops[j]
        var nloop = new Array(loop.length)
        for(var k=0; k<loop.length; ++k) {
          nloop[k] = positions[loop[k]].slice()
        }
        if(flip) {
          nloop.reverse()
        }
        nloops[j] = nloop
      }
      nresult[i] = nloops
    }
    return nresult
  } else if(options.triangles || options.triangulate || options.triangle) {
    return {
      cells: cdt2d(positions, edges, {
        delaunay: false,
        exterior: false,
        interior: true
      }),
      positions: positions
    }
  } else {
    return {
      edges:     edges,
      positions: positions
    }
  }
}

function processPixels(pixels, options, size) {
  try {
    return processPixelsImpl(pixels, options, size, true)
  } catch(e) {}
  try {
    return processPixelsImpl(pixels, options, size, false)
  } catch(e) {}
  if(options.polygons || options.polyline || options.polygon) {
    return []
  }
  if(options.triangles || options.triangulate || options.triangle) {
    return {
      cells: [],
      positions: []
    }
  }
  return {
    edges: [],
    positions: []
  }
}

function vectorizeText(str, canvas, context, options) {
  var size = options.size || 64
  var family = options.font || "normal"

  context.font = size + "px " + family
  context.textAlign = "start"
  context.textBaseline = "alphabetic"
  context.direction = "ltr"

  var pixels = getPixels(canvas, context, str, size)

  return processPixels(pixels, options, size)
}

},{"cdt2d":42,"clean-pslg":49,"ndarray":163,"planar-graph-to-polyline":172,"simplify-planar-graph":192,"surface-nets":197}],210:[function(require,module,exports){
var hiddenStore = require('./hidden-store.js');

module.exports = createStore;

function createStore() {
    var key = {};

    return function (obj) {
        if ((typeof obj !== 'object' || obj === null) &&
            typeof obj !== 'function'
        ) {
            throw new Error('Weakmap-shim: Key must be object')
        }

        var store = obj.valueOf(key);
        return store && store.identity === key ?
            store : hiddenStore(obj, key);
    };
}

},{"./hidden-store.js":211}],211:[function(require,module,exports){
module.exports = hiddenStore;

function hiddenStore(obj, key) {
    var store = { identity: key };
    var valueOf = obj.valueOf;

    Object.defineProperty(obj, "valueOf", {
        value: function (value) {
            return value !== key ?
                valueOf.apply(this, arguments) : store;
        },
        writable: true
    });

    return store;
}

},{}],212:[function(require,module,exports){
// Original - @Gozola.
// https://gist.github.com/Gozala/1269991
// This is a reimplemented version (with a few bug fixes).

var createStore = require('./create-store.js');

module.exports = weakMap;

function weakMap() {
    var privates = createStore();

    return {
        'get': function (key, fallback) {
            var store = privates(key)
            return store.hasOwnProperty('value') ?
                store.value : fallback
        },
        'set': function (key, value) {
            privates(key).value = value;
            return this;
        },
        'has': function(key) {
            return 'value' in privates(key);
        },
        'delete': function (key) {
            return delete privates(key).value;
        }
    }
}

},{"./create-store.js":210}],213:[function(require,module,exports){
var getContext = require('get-canvas-context')

module.exports = function getWebGLContext (opt) {
  return getContext('webgl', opt)
}

},{"get-canvas-context":72}],214:[function(require,module,exports){
module.exports = require('cwise-compiler')({
    args: ['array', {
        offset: [1],
        array: 0
    }, 'scalar', 'scalar', 'index'],
    pre: {
        "body": "{}",
        "args": [],
        "thisVars": [],
        "localVars": []
    },
    post: {
        "body": "{}",
        "args": [],
        "thisVars": [],
        "localVars": []
    },
    body: {
        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
        "args": [{
            "name": "_inline_1_arg0_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }, {
            "name": "_inline_1_arg1_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }, {
            "name": "_inline_1_arg2_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }, {
            "name": "_inline_1_arg3_",
            "lvalue": false,
            "rvalue": true,
            "count": 2
        }, {
            "name": "_inline_1_arg4_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }],
        "thisVars": [],
        "localVars": ["_inline_1_da", "_inline_1_db"]
    },
    funcName: 'zeroCrossings'
})

},{"cwise-compiler":58}],215:[function(require,module,exports){
"use strict"

module.exports = findZeroCrossings

var core = require("./lib/zc-core")

function findZeroCrossings(array, level) {
  var cross = []
  level = +level || 0.0
  core(array.hi(array.shape[0]-1), cross, level)
  return cross
}
},{"./lib/zc-core":214}],216:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var handleAnnotationCommonDefaults = require('./common_defaults');
var attributes = require('./attributes');


module.exports = function handleAnnotationDefaults(annIn, annOut, fullLayout, opts, itemOpts) {
    opts = opts || {};
    itemOpts = itemOpts || {};

    function coerce(attr, dflt) {
        return Lib.coerce(annIn, annOut, attributes, attr, dflt);
    }

    var visible = coerce('visible', !itemOpts.itemIsNotPlainObject);
    var clickToShow = coerce('clicktoshow');

    if(!(visible || clickToShow)) return annOut;

    handleAnnotationCommonDefaults(annIn, annOut, fullLayout, coerce);

    var showArrow = annOut.showarrow;

    // positioning
    var axLetters = ['x', 'y'],
        arrowPosDflt = [-10, -30],
        gdMock = {_fullLayout: fullLayout};
    for(var i = 0; i < 2; i++) {
        var axLetter = axLetters[i];

        // xref, yref
        var axRef = Axes.coerceRef(annIn, annOut, gdMock, axLetter, '', 'paper');

        // x, y
        Axes.coercePosition(annOut, gdMock, coerce, axRef, axLetter, 0.5);

        if(showArrow) {
            var arrowPosAttr = 'a' + axLetter,
                // axref, ayref
                aaxRef = Axes.coerceRef(annIn, annOut, gdMock, arrowPosAttr, 'pixel');

            // for now the arrow can only be on the same axis or specified as pixels
            // TODO: sometime it might be interesting to allow it to be on *any* axis
            // but that would require updates to drawing & autorange code and maybe more
            if(aaxRef !== 'pixel' && aaxRef !== axRef) {
                aaxRef = annOut[arrowPosAttr] = 'pixel';
            }

            // ax, ay
            var aDflt = (aaxRef === 'pixel') ? arrowPosDflt[i] : 0.4;
            Axes.coercePosition(annOut, gdMock, coerce, aaxRef, arrowPosAttr, aDflt);
        }

        // xanchor, yanchor
        coerce(axLetter + 'anchor');

        // xshift, yshift
        coerce(axLetter + 'shift');
    }

    // if you have one coordinate you should have both
    Lib.noneOrAll(annIn, annOut, ['x', 'y']);

    // if you have one part of arrow length you should have both
    if(showArrow) {
        Lib.noneOrAll(annIn, annOut, ['ax', 'ay']);
    }

    if(clickToShow) {
        var xClick = coerce('xclick');
        var yClick = coerce('yclick');

        // put the actual click data to bind to into private attributes
        // so we don't have to do this little bit of logic on every hover event
        annOut._xclick = (xClick === undefined) ?
            annOut.x :
            Axes.cleanPosition(xClick, gdMock, annOut.xref);
        annOut._yclick = (yClick === undefined) ?
            annOut.y :
            Axes.cleanPosition(yClick, gdMock, annOut.yref);
    }

    return annOut;
};

},{"../../lib":353,"../../plots/cartesian/axes":396,"./attributes":218,"./common_defaults":221}],217:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * All paths are tuned for maximum scalability of the arrowhead,
 * ie throughout arrowwidth=0.3..3 the head is joined smoothly
 * to the line, with the line coming from the left and ending at (0, 0).
 *
 * `backoff` is the distance to move the arrowhead and the end of the line,
 * in order that the arrowhead points to the desired place, either at
 * the tip of the arrow or (in the case of circle or square)
 * the center of the symbol.
 *
 * `noRotate`, if truthy, says that this arrowhead should not rotate with the
 * arrow. That's the case for squares, which should always be straight, and
 * circles, for which it's irrelevant.
 */

module.exports = [
    // no arrow
    {
        path: '',
        backoff: 0
    },
    // wide with flat back
    {
        path: 'M-2.4,-3V3L0.6,0Z',
        backoff: 0.6
    },
    // narrower with flat back
    {
        path: 'M-3.7,-2.5V2.5L1.3,0Z',
        backoff: 1.3
    },
    // barbed
    {
        path: 'M-4.45,-3L-1.65,-0.2V0.2L-4.45,3L1.55,0Z',
        backoff: 1.55
    },
    // wide line-drawn
    {
        path: 'M-2.2,-2.2L-0.2,-0.2V0.2L-2.2,2.2L-1.4,3L1.6,0L-1.4,-3Z',
        backoff: 1.6
    },
    // narrower line-drawn
    {
        path: 'M-4.4,-2.1L-0.6,-0.2V0.2L-4.4,2.1L-4,3L2,0L-4,-3Z',
        backoff: 2
    },
    // circle
    {
        path: 'M2,0A2,2 0 1,1 0,-2A2,2 0 0,1 2,0Z',
        backoff: 0,
        noRotate: true
    },
    // square
    {
        path: 'M2,2V-2H-2V2Z',
        backoff: 0,
        noRotate: true
    }
];

},{}],218:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var ARROWPATHS = require('./arrow_paths');
var fontAttrs = require('../../plots/font_attributes');
var cartesianConstants = require('../../plots/cartesian/constants');


module.exports = {
    _isLinkedToArray: 'annotation',

    visible: {
        valType: 'boolean',
        
        dflt: true,
        editType: 'calcIfAutorange',
        
    },

    text: {
        valType: 'string',
        
        editType: 'calcIfAutorange',
        
    },
    textangle: {
        valType: 'angle',
        dflt: 0,
        
        editType: 'calcIfAutorange',
        
    },
    font: fontAttrs({
        editType: 'calcIfAutorange',
        colorEditType: 'arraydraw',
        
    }),
    width: {
        valType: 'number',
        min: 1,
        dflt: null,
        
        editType: 'calcIfAutorange',
        
    },
    height: {
        valType: 'number',
        min: 1,
        dflt: null,
        
        editType: 'calcIfAutorange',
        
    },
    opacity: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 1,
        
        editType: 'arraydraw',
        
    },
    align: {
        valType: 'enumerated',
        values: ['left', 'center', 'right'],
        dflt: 'center',
        
        editType: 'arraydraw',
        
    },
    valign: {
        valType: 'enumerated',
        values: ['top', 'middle', 'bottom'],
        dflt: 'middle',
        
        editType: 'arraydraw',
        
    },
    bgcolor: {
        valType: 'color',
        dflt: 'rgba(0,0,0,0)',
        
        editType: 'arraydraw',
        
    },
    bordercolor: {
        valType: 'color',
        dflt: 'rgba(0,0,0,0)',
        
        editType: 'arraydraw',
        
    },
    borderpad: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'calcIfAutorange',
        
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'calcIfAutorange',
        
    },
    // arrow
    showarrow: {
        valType: 'boolean',
        dflt: true,
        
        editType: 'calcIfAutorange',
        
    },
    arrowcolor: {
        valType: 'color',
        
        editType: 'arraydraw',
        
    },
    arrowhead: {
        valType: 'integer',
        min: 0,
        max: ARROWPATHS.length,
        dflt: 1,
        
        editType: 'arraydraw',
        
    },
    arrowsize: {
        valType: 'number',
        min: 0.3,
        dflt: 1,
        
        editType: 'calcIfAutorange',
        
    },
    arrowwidth: {
        valType: 'number',
        min: 0.1,
        
        editType: 'calcIfAutorange',
        
    },
    standoff: {
        valType: 'number',
        min: 0,
        dflt: 0,
        
        editType: 'calcIfAutorange',
        
    },
    ax: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },
    ay: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },
    axref: {
        valType: 'enumerated',
        dflt: 'pixel',
        values: [
            'pixel',
            cartesianConstants.idRegex.x.toString()
        ],
        
        editType: 'calc',
        
    },
    ayref: {
        valType: 'enumerated',
        dflt: 'pixel',
        values: [
            'pixel',
            cartesianConstants.idRegex.y.toString()
        ],
        
        editType: 'calc',
        
    },
    // positioning
    xref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.x.toString()
        ],
        
        editType: 'calc',
        
    },
    x: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'auto',
        
        editType: 'calcIfAutorange',
        
    },
    xshift: {
        valType: 'number',
        dflt: 0,
        
        editType: 'calcIfAutorange',
        
    },
    yref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.y.toString()
        ],
        
        editType: 'calc',
        
    },
    y: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'auto',
        
        editType: 'calcIfAutorange',
        
    },
    yshift: {
        valType: 'number',
        dflt: 0,
        
        editType: 'calcIfAutorange',
        
    },
    clicktoshow: {
        valType: 'enumerated',
        values: [false, 'onoff', 'onout'],
        dflt: false,
        
        editType: 'arraydraw',
        
    },
    xclick: {
        valType: 'any',
        
        editType: 'arraydraw',
        
    },
    yclick: {
        valType: 'any',
        
        editType: 'arraydraw',
        
    },
    hovertext: {
        valType: 'string',
        
        editType: 'arraydraw',
        
    },
    hoverlabel: {
        bgcolor: {
            valType: 'color',
            
            editType: 'arraydraw',
            
        },
        bordercolor: {
            valType: 'color',
            
            editType: 'arraydraw',
            
        },
        font: fontAttrs({
            editType: 'arraydraw',
            
        }),
        editType: 'arraydraw'
    },
    captureevents: {
        valType: 'boolean',
        
        editType: 'arraydraw',
        
    },
    editType: 'calc',

    _deprecated: {
        ref: {
            valType: 'string',
            
            editType: 'calc',
            
        }
    }
};

},{"../../plots/cartesian/constants":401,"../../plots/font_attributes":420,"./arrow_paths":217}],219:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var draw = require('./draw').draw;


module.exports = function calcAutorange(gd) {
    var fullLayout = gd._fullLayout,
        annotationList = Lib.filterVisible(fullLayout.annotations);

    if(!annotationList.length || !gd._fullData.length) return;

    var annotationAxes = {};
    annotationList.forEach(function(ann) {
        annotationAxes[ann.xref] = true;
        annotationAxes[ann.yref] = true;
    });

    var autorangedAnnos = Axes.list(gd).filter(function(ax) {
        return ax.autorange && annotationAxes[ax._id];
    });
    if(!autorangedAnnos.length) return;

    return Lib.syncOrAsync([
        draw,
        annAutorange
    ], gd);
};

function annAutorange(gd) {
    var fullLayout = gd._fullLayout;

    // find the bounding boxes for each of these annotations'
    // relative to their anchor points
    // use the arrow and the text bg rectangle,
    // as the whole anno may include hidden text in its bbox
    Lib.filterVisible(fullLayout.annotations).forEach(function(ann) {
        var xa = Axes.getFromId(gd, ann.xref),
            ya = Axes.getFromId(gd, ann.yref),
            headSize = 3 * ann.arrowsize * ann.arrowwidth || 0;

        var headPlus, headMinus;

        if(xa && xa.autorange) {
            headPlus = headSize + ann.xshift;
            headMinus = headSize - ann.xshift;

            if(ann.axref === ann.xref) {
                // expand for the arrowhead (padded by arrowhead)
                Axes.expand(xa, [xa.r2c(ann.x)], {
                    ppadplus: headPlus,
                    ppadminus: headMinus
                });
                // again for the textbox (padded by textbox)
                Axes.expand(xa, [xa.r2c(ann.ax)], {
                    ppadplus: ann._xpadplus,
                    ppadminus: ann._xpadminus
                });
            }
            else {
                Axes.expand(xa, [xa.r2c(ann.x)], {
                    ppadplus: Math.max(ann._xpadplus, headPlus),
                    ppadminus: Math.max(ann._xpadminus, headMinus)
                });
            }
        }

        if(ya && ya.autorange) {
            headPlus = headSize - ann.yshift;
            headMinus = headSize + ann.yshift;

            if(ann.ayref === ann.yref) {
                Axes.expand(ya, [ya.r2c(ann.y)], {
                    ppadplus: headPlus,
                    ppadminus: headMinus
                });
                Axes.expand(ya, [ya.r2c(ann.ay)], {
                    ppadplus: ann._ypadplus,
                    ppadminus: ann._ypadminus
                });
            }
            else {
                Axes.expand(ya, [ya.r2c(ann.y)], {
                    ppadplus: Math.max(ann._ypadplus, headPlus),
                    ppadminus: Math.max(ann._ypadminus, headMinus)
                });
            }
        }
    });
}

},{"../../lib":353,"../../plots/cartesian/axes":396,"./draw":224}],220:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../../plotly');


module.exports = {
    hasClickToShow: hasClickToShow,
    onClick: onClick
};

/*
 * hasClickToShow: does the given hoverData have ANY annotations which will
 * turn ON if we click here? (used by hover events to set cursor)
 *
 * gd: graphDiv
 * hoverData: a hoverData array, as included with the *plotly_hover* or
 *     *plotly_click* events in the `points` attribute
 *
 * returns: boolean
 */
function hasClickToShow(gd, hoverData) {
    var sets = getToggleSets(gd, hoverData);
    return sets.on.length > 0 || sets.explicitOff.length > 0;
}

/*
 * onClick: perform the toggling (via Plotly.update) implied by clicking
 * at this hoverData
 *
 * gd: graphDiv
 * hoverData: a hoverData array, as included with the *plotly_hover* or
 *     *plotly_click* events in the `points` attribute
 *
 * returns: Promise that the update is complete
 */
function onClick(gd, hoverData) {
    var toggleSets = getToggleSets(gd, hoverData),
        onSet = toggleSets.on,
        offSet = toggleSets.off.concat(toggleSets.explicitOff),
        update = {},
        i;

    if(!(onSet.length || offSet.length)) return;

    for(i = 0; i < onSet.length; i++) {
        update['annotations[' + onSet[i] + '].visible'] = true;
    }

    for(i = 0; i < offSet.length; i++) {
        update['annotations[' + offSet[i] + '].visible'] = false;
    }

    return Plotly.update(gd, {}, update);
}

/*
 * getToggleSets: find the annotations which will turn on or off at this
 * hoverData
 *
 * gd: graphDiv
 * hoverData: a hoverData array, as included with the *plotly_hover* or
 *     *plotly_click* events in the `points` attribute
 *
 * returns: {
 *   on: Array (indices of annotations to turn on),
 *   off: Array (indices to turn off because you're not hovering on them),
 *   explicitOff: Array (indices to turn off because you *are* hovering on them)
 * }
 */
function getToggleSets(gd, hoverData) {
    var annotations = gd._fullLayout.annotations,
        onSet = [],
        offSet = [],
        explicitOffSet = [],
        hoverLen = (hoverData || []).length;

    var i, j, anni, showMode, pointj, xa, ya, toggleType;

    for(i = 0; i < annotations.length; i++) {
        anni = annotations[i];
        showMode = anni.clicktoshow;

        if(showMode) {
            for(j = 0; j < hoverLen; j++) {
                pointj = hoverData[j];
                xa = pointj.xaxis;
                ya = pointj.yaxis;

                if(xa._id === anni.xref &&
                    ya._id === anni.yref &&
                    xa.d2r(pointj.x) === clickData2r(anni._xclick, xa) &&
                    ya.d2r(pointj.y) === clickData2r(anni._yclick, ya)
                ) {
                    // match! toggle this annotation
                    // regardless of its clicktoshow mode
                    // but if it's onout mode, off is implicit
                    if(anni.visible) {
                        if(showMode === 'onout') toggleType = offSet;
                        else toggleType = explicitOffSet;
                    }
                    else {
                        toggleType = onSet;
                    }
                    toggleType.push(i);
                    break;
                }
            }

            if(j === hoverLen) {
                // no match - only turn this annotation OFF, and only if
                // showmode is 'onout'
                if(anni.visible && showMode === 'onout') offSet.push(i);
            }
        }
    }

    return {on: onSet, off: offSet, explicitOff: explicitOffSet};
}

// to handle log axes until v2
function clickData2r(d, ax) {
    return ax.type === 'log' ? ax.l2r(d) : ax.d2r(d);
}

},{"../../plotly":391}],221:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Color = require('../color');

// defaults common to 'annotations' and 'annotations3d'
module.exports = function handleAnnotationCommonDefaults(annIn, annOut, fullLayout, coerce) {
    coerce('opacity');
    var bgColor = coerce('bgcolor');

    var borderColor = coerce('bordercolor');
    var borderOpacity = Color.opacity(borderColor);

    coerce('borderpad');

    var borderWidth = coerce('borderwidth');
    var showArrow = coerce('showarrow');

    coerce('text', showArrow ? ' ' : 'new text');
    coerce('textangle');
    Lib.coerceFont(coerce, 'font', fullLayout.font);

    coerce('width');
    coerce('align');

    var h = coerce('height');
    if(h) coerce('valign');

    if(showArrow) {
        coerce('arrowcolor', borderOpacity ? annOut.bordercolor : Color.defaultLine);
        coerce('arrowhead');
        coerce('arrowsize');
        coerce('arrowwidth', ((borderOpacity && borderWidth) || 1) * 2);
        coerce('standoff');

    }

    var hoverText = coerce('hovertext');
    var globalHoverLabel = fullLayout.hoverlabel || {};

    if(hoverText) {
        var hoverBG = coerce('hoverlabel.bgcolor', globalHoverLabel.bgcolor ||
            (Color.opacity(bgColor) ? Color.rgb(bgColor) : Color.defaultLine)
        );

        var hoverBorder = coerce('hoverlabel.bordercolor', globalHoverLabel.bordercolor ||
            Color.contrast(hoverBG)
        );

        Lib.coerceFont(coerce, 'hoverlabel.font', {
            family: globalHoverLabel.font.family,
            size: globalHoverLabel.font.size,
            color: globalHoverLabel.font.color || hoverBorder
        });
    }

    coerce('captureevents', !!hoverText);
};

},{"../../lib":353,"../color":233}],222:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var toLogRange = require('../../lib/to_log_range');

/*
 * convertCoords: when converting an axis between log and linear
 * you need to alter any annotations on that axis to keep them
 * pointing at the same data point.
 * In v2.0 this will become obsolete
 *
 * gd: the plot div
 * ax: the axis being changed
 * newType: the type it's getting
 * doExtra: function(attr, val) from inside relayout that sets the attribute.
 *     Use this to make the changes as it's aware if any other changes in the
 *     same relayout call should override this conversion.
 */
module.exports = function convertCoords(gd, ax, newType, doExtra) {
    ax = ax || {};

    var toLog = (newType === 'log') && (ax.type === 'linear'),
        fromLog = (newType === 'linear') && (ax.type === 'log');

    if(!(toLog || fromLog)) return;

    var annotations = gd._fullLayout.annotations,
        axLetter = ax._id.charAt(0),
        ann,
        attrPrefix;

    function convert(attr) {
        var currentVal = ann[attr],
            newVal = null;

        if(toLog) newVal = toLogRange(currentVal, ax.range);
        else newVal = Math.pow(10, currentVal);

        // if conversion failed, delete the value so it gets a default value
        if(!isNumeric(newVal)) newVal = null;

        doExtra(attrPrefix + attr, newVal);
    }

    for(var i = 0; i < annotations.length; i++) {
        ann = annotations[i];
        attrPrefix = 'annotations[' + i + '].';

        if(ann[axLetter + 'ref'] === ax._id) convert(axLetter);
        if(ann['a' + axLetter + 'ref'] === ax._id) convert('a' + axLetter);
    }
};

},{"../../lib/to_log_range":377,"fast-isnumeric":68}],223:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var handleArrayContainerDefaults = require('../../plots/array_container_defaults');
var handleAnnotationDefaults = require('./annotation_defaults');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    var opts = {
        name: 'annotations',
        handleItemDefaults: handleAnnotationDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

},{"../../plots/array_container_defaults":393,"./annotation_defaults":216}],224:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var Color = require('../color');
var Drawing = require('../drawing');
var Fx = require('../fx');
var svgTextUtils = require('../../lib/svg_text_utils');
var setCursor = require('../../lib/setcursor');
var dragElement = require('../dragelement');

var drawArrowHead = require('./draw_arrow_head');


// Annotations are stored in gd.layout.annotations, an array of objects
// index can point to one item in this array,
//  or non-numeric to simply add a new one
//  or -1 to modify all existing
// opt can be the full options object, or one key (to be set to value)
//  or undefined to simply redraw
// if opt is blank, val can be 'add' or a full options object to add a new
//  annotation at that point in the array, or 'remove' to delete this one

module.exports = {
    draw: draw,
    drawOne: drawOne,
    drawRaw: drawRaw
};

/*
 * draw: draw all annotations without any new modifications
 */
function draw(gd) {
    var fullLayout = gd._fullLayout;

    fullLayout._infolayer.selectAll('.annotation').remove();

    for(var i = 0; i < fullLayout.annotations.length; i++) {
        if(fullLayout.annotations[i].visible) {
            drawOne(gd, i);
        }
    }

    return Plots.previousPromises(gd);
}

/*
 * drawOne: draw a single cartesian or paper-ref annotation, potentially with modifications
 *
 * index (int): the annotation to draw
 */
function drawOne(gd, index) {
    var fullLayout = gd._fullLayout;
    var options = fullLayout.annotations[index] || {};
    var xa = Axes.getFromId(gd, options.xref);
    var ya = Axes.getFromId(gd, options.yref);

    drawRaw(gd, options, index, false, xa, ya);
}

/**
 * drawRaw: draw a single annotation, potentially with modifications
 *
 * @param {DOM element} gd
 * @param {object} options : this annotation's fullLayout options
 * @param {integer} index : index in 'annotations' container of the annotation to draw
 * @param {string} subplotId : id of the annotation's subplot
 *  - use false for 2d (i.e. cartesian or paper-ref) annotations
 * @param {object | undefined} xa : full x-axis object to compute subplot pos-to-px
 * @param {object | undefined} ya : ... y-axis
 */
function drawRaw(gd, options, index, subplotId, xa, ya) {
    var fullLayout = gd._fullLayout;
    var gs = gd._fullLayout._size;
    var edits = gd._context.edits;

    var className;
    var annbase;

    if(subplotId) {
        className = 'annotation-' + subplotId;
        annbase = subplotId + '.annotations[' + index + ']';
    } else {
        className = 'annotation';
        annbase = 'annotations[' + index + ']';
    }

    // remove the existing annotation if there is one
    fullLayout._infolayer
        .selectAll('.' + className + '[data-index="' + index + '"]')
        .remove();

    var annClipID = 'clip' + fullLayout._uid + '_ann' + index;

    // this annotation is gone - quit now after deleting it
    // TODO: use d3 idioms instead of deleting and redrawing every time
    if(!options._input || options.visible === false) {
        d3.selectAll('#' + annClipID).remove();
        return;
    }

    // calculated pixel positions
    // x & y each will get text, head, and tail as appropriate
    var annPosPx = {x: {}, y: {}},
        textangle = +options.textangle || 0;

    // create the components
    // made a single group to contain all, so opacity can work right
    // with border/arrow together this could handle a whole bunch of
    // cleanup at this point, but works for now
    var annGroup = fullLayout._infolayer.append('g')
        .classed(className, true)
        .attr('data-index', String(index))
        .style('opacity', options.opacity);

    // another group for text+background so that they can rotate together
    var annTextGroup = annGroup.append('g')
        .classed('annotation-text-g', true);

    var editTextPosition = edits[options.showarrow ? 'annotationTail' : 'annotationPosition'];
    var textEvents = options.captureevents || edits.annotationText || editTextPosition;

    var annTextGroupInner = annTextGroup.append('g')
        .style('pointer-events', textEvents ? 'all' : null)
        .call(setCursor, 'default')
        .on('click', function() {
            gd._dragging = false;

            var eventData = {
                index: index,
                annotation: options._input,
                fullAnnotation: options,
                event: d3.event
            };

            if(subplotId) {
                eventData.subplotId = subplotId;
            }

            gd.emit('plotly_clickannotation', eventData);
        });

    if(options.hovertext) {
        annTextGroupInner
        .on('mouseover', function() {
            var hoverOptions = options.hoverlabel;
            var hoverFont = hoverOptions.font;
            var bBox = this.getBoundingClientRect();
            var bBoxRef = gd.getBoundingClientRect();

            Fx.loneHover({
                x0: bBox.left - bBoxRef.left,
                x1: bBox.right - bBoxRef.left,
                y: (bBox.top + bBox.bottom) / 2 - bBoxRef.top,
                text: options.hovertext,
                color: hoverOptions.bgcolor,
                borderColor: hoverOptions.bordercolor,
                fontFamily: hoverFont.family,
                fontSize: hoverFont.size,
                fontColor: hoverFont.color
            }, {
                container: fullLayout._hoverlayer.node(),
                outerContainer: fullLayout._paper.node(),
                gd: gd
            });
        })
        .on('mouseout', function() {
            Fx.loneUnhover(fullLayout._hoverlayer.node());
        });
    }

    var borderwidth = options.borderwidth,
        borderpad = options.borderpad,
        borderfull = borderwidth + borderpad;

    var annTextBG = annTextGroupInner.append('rect')
        .attr('class', 'bg')
        .style('stroke-width', borderwidth + 'px')
        .call(Color.stroke, options.bordercolor)
        .call(Color.fill, options.bgcolor);

    var isSizeConstrained = options.width || options.height;

    var annTextClip = fullLayout._topclips
        .selectAll('#' + annClipID)
        .data(isSizeConstrained ? [0] : []);

    annTextClip.enter().append('clipPath')
        .classed('annclip', true)
        .attr('id', annClipID)
      .append('rect');
    annTextClip.exit().remove();

    var font = options.font;

    var annText = annTextGroupInner.append('text')
        .classed('annotation-text', true)
        .text(options.text);

    function textLayout(s) {
        s.call(Drawing.font, font)
        .attr({
            'text-anchor': {
                left: 'start',
                right: 'end'
            }[options.align] || 'middle'
        });

        svgTextUtils.convertToTspans(s, gd, drawGraphicalElements);
        return s;
    }

    function drawGraphicalElements() {
        // if the text has *only* a link, make the whole box into a link
        var anchor3 = annText.selectAll('a');
        if(anchor3.size() === 1 && anchor3.text() === annText.text()) {
            var wholeLink = annTextGroupInner.insert('a', ':first-child').attr({
                'xlink:xlink:href': anchor3.attr('xlink:href'),
                'xlink:xlink:show': anchor3.attr('xlink:show')
            })
            .style({cursor: 'pointer'});

            wholeLink.node().appendChild(annTextBG.node());
        }

        var mathjaxGroup = annTextGroupInner.select('.annotation-text-math-group');
        var hasMathjax = !mathjaxGroup.empty();
        var anntextBB = Drawing.bBox(
                (hasMathjax ? mathjaxGroup : annText).node());
        var textWidth = anntextBB.width;
        var textHeight = anntextBB.height;
        var annWidth = options.width || textWidth;
        var annHeight = options.height || textHeight;
        var outerWidth = Math.round(annWidth + 2 * borderfull);
        var outerHeight = Math.round(annHeight + 2 * borderfull);


        // save size in the annotation object for use by autoscale
        options._w = annWidth;
        options._h = annHeight;

        function shiftFraction(v, anchor) {
            if(anchor === 'auto') {
                if(v < 1 / 3) anchor = 'left';
                else if(v > 2 / 3) anchor = 'right';
                else anchor = 'center';
            }
            return {
                center: 0,
                middle: 0,
                left: 0.5,
                bottom: -0.5,
                right: -0.5,
                top: 0.5
            }[anchor];
        }

        var annotationIsOffscreen = false;
        var letters = ['x', 'y'];

        for(var i = 0; i < letters.length; i++) {
            var axLetter = letters[i],
                axRef = options[axLetter + 'ref'] || axLetter,
                tailRef = options['a' + axLetter + 'ref'],
                ax = {x: xa, y: ya}[axLetter],
                dimAngle = (textangle + (axLetter === 'x' ? 0 : -90)) * Math.PI / 180,
                // note that these two can be either positive or negative
                annSizeFromWidth = outerWidth * Math.cos(dimAngle),
                annSizeFromHeight = outerHeight * Math.sin(dimAngle),
                // but this one is the positive total size
                annSize = Math.abs(annSizeFromWidth) + Math.abs(annSizeFromHeight),
                anchor = options[axLetter + 'anchor'],
                overallShift = options[axLetter + 'shift'] * (axLetter === 'x' ? 1 : -1),
                posPx = annPosPx[axLetter],
                basePx,
                textPadShift,
                alignPosition,
                autoAlignFraction,
                textShift;

            /*
             * calculate the *primary* pixel position
             * which is the arrowhead if there is one,
             * otherwise the text anchor point
             */
            if(ax) {
                /*
                 * hide the annotation if it's pointing outside the visible plot
                 * as long as the axis isn't autoranged - then we need to draw it
                 * anyway to get its bounding box. When we're dragging, an axis can
                 * still look autoranged even though it won't be when the drag finishes.
                 */
                var posFraction = ax.r2fraction(options[axLetter]);
                if((gd._dragging || !ax.autorange) && (posFraction < 0 || posFraction > 1)) {
                    if(tailRef === axRef) {
                        posFraction = ax.r2fraction(options['a' + axLetter]);
                        if(posFraction < 0 || posFraction > 1) {
                            annotationIsOffscreen = true;
                        }
                    }
                    else {
                        annotationIsOffscreen = true;
                    }

                    if(annotationIsOffscreen) continue;
                }
                basePx = ax._offset + ax.r2p(options[axLetter]);
                autoAlignFraction = 0.5;
            }
            else {
                if(axLetter === 'x') {
                    alignPosition = options[axLetter];
                    basePx = gs.l + gs.w * alignPosition;
                }
                else {
                    alignPosition = 1 - options[axLetter];
                    basePx = gs.t + gs.h * alignPosition;
                }
                autoAlignFraction = options.showarrow ? 0.5 : alignPosition;
            }

            // now translate this into pixel positions of head, tail, and text
            // as well as paddings for autorange
            if(options.showarrow) {
                posPx.head = basePx;

                var arrowLength = options['a' + axLetter];

                // with an arrow, the text rotates around the anchor point
                textShift = annSizeFromWidth * shiftFraction(0.5, options.xanchor) -
                    annSizeFromHeight * shiftFraction(0.5, options.yanchor);

                if(tailRef === axRef) {
                    posPx.tail = ax._offset + ax.r2p(arrowLength);
                    // tail is data-referenced: autorange pads the text in px from the tail
                    textPadShift = textShift;
                }
                else {
                    posPx.tail = basePx + arrowLength;
                    // tail is specified in px from head, so autorange also pads vs head
                    textPadShift = textShift + arrowLength;
                }

                posPx.text = posPx.tail + textShift;

                // constrain pixel/paper referenced so the draggers are at least
                // partially visible
                var maxPx = fullLayout[(axLetter === 'x') ? 'width' : 'height'];
                if(axRef === 'paper') {
                    posPx.head = Lib.constrain(posPx.head, 1, maxPx - 1);
                }
                if(tailRef === 'pixel') {
                    var shiftPlus = -Math.max(posPx.tail - 3, posPx.text),
                        shiftMinus = Math.min(posPx.tail + 3, posPx.text) - maxPx;
                    if(shiftPlus > 0) {
                        posPx.tail += shiftPlus;
                        posPx.text += shiftPlus;
                    }
                    else if(shiftMinus > 0) {
                        posPx.tail -= shiftMinus;
                        posPx.text -= shiftMinus;
                    }
                }

                posPx.tail += overallShift;
                posPx.head += overallShift;
            }
            else {
                // with no arrow, the text rotates and *then* we put the anchor
                // relative to the new bounding box
                textShift = annSize * shiftFraction(autoAlignFraction, anchor);
                textPadShift = textShift;
                posPx.text = basePx + textShift;
            }

            posPx.text += overallShift;
            textShift += overallShift;
            textPadShift += overallShift;

            // padplus/minus are used by autorange
            options['_' + axLetter + 'padplus'] = (annSize / 2) + textPadShift;
            options['_' + axLetter + 'padminus'] = (annSize / 2) - textPadShift;

            // size/shift are used during dragging
            options['_' + axLetter + 'size'] = annSize;
            options['_' + axLetter + 'shift'] = textShift;
        }

        if(annotationIsOffscreen) {
            annTextGroupInner.remove();
            return;
        }

        var xShift = 0;
        var yShift = 0;

        if(options.align !== 'left') {
            xShift = (annWidth - textWidth) * (options.align === 'center' ? 0.5 : 1);
        }
        if(options.valign !== 'top') {
            yShift = (annHeight - textHeight) * (options.valign === 'middle' ? 0.5 : 1);
        }

        if(hasMathjax) {
            mathjaxGroup.select('svg').attr({
                x: borderfull + xShift - 1,
                y: borderfull + yShift
            })
            .call(Drawing.setClipUrl, isSizeConstrained ? annClipID : null);
        }
        else {
            var texty = borderfull + yShift - anntextBB.top;
            var textx = borderfull + xShift - anntextBB.left;

            annText.call(svgTextUtils.positionText, textx, texty)
                .call(Drawing.setClipUrl, isSizeConstrained ? annClipID : null);
        }

        annTextClip.select('rect').call(Drawing.setRect, borderfull, borderfull,
            annWidth, annHeight);

        annTextBG.call(Drawing.setRect, borderwidth / 2, borderwidth / 2,
            outerWidth - borderwidth, outerHeight - borderwidth);

        annTextGroupInner.call(Drawing.setTranslate,
            Math.round(annPosPx.x.text - outerWidth / 2),
            Math.round(annPosPx.y.text - outerHeight / 2));

        /*
         * rotate text and background
         * we already calculated the text center position *as rotated*
         * because we needed that for autoranging anyway, so now whether
         * we have an arrow or not, we rotate about the text center.
         */
        annTextGroup.attr({transform: 'rotate(' + textangle + ',' +
                            annPosPx.x.text + ',' + annPosPx.y.text + ')'});

        /*
         * add the arrow
         * uses options[arrowwidth,arrowcolor,arrowhead] for styling
         * dx and dy are normally zero, but when you are dragging the textbox
         * while the head stays put, dx and dy are the pixel offsets
         */
        var drawArrow = function(dx, dy) {
            annGroup
                .selectAll('.annotation-arrow-g')
                .remove();

            var headX = annPosPx.x.head,
                headY = annPosPx.y.head,
                tailX = annPosPx.x.tail + dx,
                tailY = annPosPx.y.tail + dy,
                textX = annPosPx.x.text + dx,
                textY = annPosPx.y.text + dy,

                // find the edge of the text box, where we'll start the arrow:
                // create transform matrix to rotate the text box corners
                transform = Lib.rotationXYMatrix(textangle, textX, textY),
                applyTransform = Lib.apply2DTransform(transform),
                applyTransform2 = Lib.apply2DTransform2(transform),

                // calculate and transform bounding box
                width = +annTextBG.attr('width'),
                height = +annTextBG.attr('height'),
                xLeft = textX - 0.5 * width,
                xRight = xLeft + width,
                yTop = textY - 0.5 * height,
                yBottom = yTop + height,
                edges = [
                    [xLeft, yTop, xLeft, yBottom],
                    [xLeft, yBottom, xRight, yBottom],
                    [xRight, yBottom, xRight, yTop],
                    [xRight, yTop, xLeft, yTop]
                ].map(applyTransform2);

            // Remove the line if it ends inside the box.  Use ray
            // casting for rotated boxes: see which edges intersect a
            // line from the arrowhead to far away and reduce with xor
            // to get the parity of the number of intersections.
            if(edges.reduce(function(a, x) {
                return a ^
                    !!Lib.segmentsIntersect(headX, headY, headX + 1e6, headY + 1e6,
                            x[0], x[1], x[2], x[3]);
            }, false)) {
                // no line or arrow - so quit drawArrow now
                return;
            }

            edges.forEach(function(x) {
                var p = Lib.segmentsIntersect(tailX, tailY, headX, headY,
                            x[0], x[1], x[2], x[3]);
                if(p) {
                    tailX = p.x;
                    tailY = p.y;
                }
            });

            var strokewidth = options.arrowwidth,
                arrowColor = options.arrowcolor;

            var arrowGroup = annGroup.append('g')
                .style({opacity: Color.opacity(arrowColor)})
                .classed('annotation-arrow-g', true);

            var arrow = arrowGroup.append('path')
                .attr('d', 'M' + tailX + ',' + tailY + 'L' + headX + ',' + headY)
                .style('stroke-width', strokewidth + 'px')
                .call(Color.stroke, Color.rgb(arrowColor));

            drawArrowHead(arrow, 'end', options);

            // the arrow dragger is a small square right at the head, then a line to the tail,
            // all expanded by a stroke width of 6px plus the arrow line width
            if(edits.annotationPosition && arrow.node().parentNode && !subplotId) {
                var arrowDragHeadX = headX;
                var arrowDragHeadY = headY;
                if(options.standoff) {
                    var arrowLength = Math.sqrt(Math.pow(headX - tailX, 2) + Math.pow(headY - tailY, 2));
                    arrowDragHeadX += options.standoff * (tailX - headX) / arrowLength;
                    arrowDragHeadY += options.standoff * (tailY - headY) / arrowLength;
                }
                var arrowDrag = arrowGroup.append('path')
                    .classed('annotation-arrow', true)
                    .classed('anndrag', true)
                    .attr({
                        d: 'M3,3H-3V-3H3ZM0,0L' + (tailX - arrowDragHeadX) + ',' + (tailY - arrowDragHeadY),
                        transform: 'translate(' + arrowDragHeadX + ',' + arrowDragHeadY + ')'
                    })
                    .style('stroke-width', (strokewidth + 6) + 'px')
                    .call(Color.stroke, 'rgba(0,0,0,0)')
                    .call(Color.fill, 'rgba(0,0,0,0)');

                var update,
                    annx0,
                    anny0;

                // dragger for the arrow & head: translates the whole thing
                // (head/tail/text) all together
                dragElement.init({
                    element: arrowDrag.node(),
                    gd: gd,
                    prepFn: function() {
                        var pos = Drawing.getTranslate(annTextGroupInner);

                        annx0 = pos.x;
                        anny0 = pos.y;
                        update = {};
                        if(xa && xa.autorange) {
                            update[xa._name + '.autorange'] = true;
                        }
                        if(ya && ya.autorange) {
                            update[ya._name + '.autorange'] = true;
                        }
                    },
                    moveFn: function(dx, dy) {
                        var annxy0 = applyTransform(annx0, anny0),
                            xcenter = annxy0[0] + dx,
                            ycenter = annxy0[1] + dy;
                        annTextGroupInner.call(Drawing.setTranslate, xcenter, ycenter);

                        update[annbase + '.x'] = xa ?
                            xa.p2r(xa.r2p(options.x) + dx) :
                            (options.x + (dx / gs.w));
                        update[annbase + '.y'] = ya ?
                            ya.p2r(ya.r2p(options.y) + dy) :
                            (options.y - (dy / gs.h));

                        if(options.axref === options.xref) {
                            update[annbase + '.ax'] = xa.p2r(xa.r2p(options.ax) + dx);
                        }

                        if(options.ayref === options.yref) {
                            update[annbase + '.ay'] = ya.p2r(ya.r2p(options.ay) + dy);
                        }

                        arrowGroup.attr('transform', 'translate(' + dx + ',' + dy + ')');
                        annTextGroup.attr({
                            transform: 'rotate(' + textangle + ',' +
                                   xcenter + ',' + ycenter + ')'
                        });
                    },
                    doneFn: function(dragged) {
                        if(dragged) {
                            Plotly.relayout(gd, update);
                            var notesBox = document.querySelector('.js-notes-box-panel');
                            if(notesBox) notesBox.redraw(notesBox.selectedObj);
                        }
                    }
                });
            }
        };

        if(options.showarrow) drawArrow(0, 0);

        // user dragging the annotation (text, not arrow)
        if(editTextPosition) {
            var update,
                baseTextTransform;

            // dragger for the textbox: if there's an arrow, just drag the
            // textbox and tail, leave the head untouched
            dragElement.init({
                element: annTextGroupInner.node(),
                gd: gd,
                prepFn: function() {
                    baseTextTransform = annTextGroup.attr('transform');
                    update = {};
                },
                moveFn: function(dx, dy) {
                    var csr = 'pointer';
                    if(options.showarrow) {
                        if(options.axref === options.xref) {
                            update[annbase + '.ax'] = xa.p2r(xa.r2p(options.ax) + dx);
                        } else {
                            update[annbase + '.ax'] = options.ax + dx;
                        }

                        if(options.ayref === options.yref) {
                            update[annbase + '.ay'] = ya.p2r(ya.r2p(options.ay) + dy);
                        } else {
                            update[annbase + '.ay'] = options.ay + dy;
                        }

                        drawArrow(dx, dy);
                    }
                    else if(!subplotId) {
                        if(xa) update[annbase + '.x'] = options.x + dx / xa._m;
                        else {
                            var widthFraction = options._xsize / gs.w,
                                xLeft = options.x + (options._xshift - options.xshift) / gs.w -
                                    widthFraction / 2;

                            update[annbase + '.x'] = dragElement.align(xLeft + dx / gs.w,
                                widthFraction, 0, 1, options.xanchor);
                        }

                        if(ya) update[annbase + '.y'] = options.y + dy / ya._m;
                        else {
                            var heightFraction = options._ysize / gs.h,
                                yBottom = options.y - (options._yshift + options.yshift) / gs.h -
                                    heightFraction / 2;

                            update[annbase + '.y'] = dragElement.align(yBottom - dy / gs.h,
                                heightFraction, 0, 1, options.yanchor);
                        }
                        if(!xa || !ya) {
                            csr = dragElement.getCursor(
                                xa ? 0.5 : update[annbase + '.x'],
                                ya ? 0.5 : update[annbase + '.y'],
                                options.xanchor, options.yanchor
                            );
                        }
                    }
                    else return;

                    annTextGroup.attr({
                        transform: 'translate(' + dx + ',' + dy + ')' + baseTextTransform
                    });

                    setCursor(annTextGroupInner, csr);
                },
                doneFn: function(dragged) {
                    setCursor(annTextGroupInner);
                    if(dragged) {
                        Plotly.relayout(gd, update);
                        var notesBox = document.querySelector('.js-notes-box-panel');
                        if(notesBox) notesBox.redraw(notesBox.selectedObj);
                    }
                }
            });
        }
    }

    if(edits.annotationText) {
        annText.call(svgTextUtils.makeEditable, {delegate: annTextGroupInner, gd: gd})
            .call(textLayout)
            .on('edit', function(_text) {
                options.text = _text;
                this.call(textLayout);

                var update = {};
                update[annbase + '.text'] = options.text;

                if(xa && xa.autorange) {
                    update[xa._name + '.autorange'] = true;
                }
                if(ya && ya.autorange) {
                    update[ya._name + '.autorange'] = true;
                }

                Plotly.relayout(gd, update);
            });
    }
    else annText.call(textLayout);
}

},{"../../lib":353,"../../lib/setcursor":371,"../../lib/svg_text_utils":375,"../../plotly":391,"../../plots/cartesian/axes":396,"../../plots/plots":429,"../color":233,"../dragelement":254,"../drawing":257,"../fx":274,"./draw_arrow_head":225,"d3":62}],225:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Color = require('../color');

var ARROWPATHS = require('./arrow_paths');

/**
 * Add arrowhead(s) to a path or line element
 *
 * @param {d3.selection} el3: a d3-selected line or path element
 *
 * @param {string} ends: 'start', 'end', or 'start+end' for which ends get arrowheads
 *
 * @param {object} options: style information. Must have all the following:
 * @param {number} options.arrowhead: head style - see ./arrow_paths
 * @param {number} options.arrowsize: relative size of the head vs line width
 * @param {number} options.standoff: distance in px to move the arrow point from its target
 * @param {number} options.arrowwidth: width of the arrow line
 * @param {string} options.arrowcolor: color of the arrow line, for the head to match
 *     Note that the opacity of this color is ignored, as it's assumed the container
 *     of both the line and head has opacity applied to it so there isn't greater opacity
 *     where they overlap.
 */
module.exports = function drawArrowHead(el3, ends, options) {
    var el = el3.node();
    var headStyle = ARROWPATHS[options.arrowhead || 0];
    var scale = (options.arrowwidth || 1) * options.arrowsize;
    var doStart = ends.indexOf('start') >= 0;
    var doEnd = ends.indexOf('end') >= 0;
    var backOff = headStyle.backoff * scale + options.standoff;

    var start, end, startRot, endRot;

    if(el.nodeName === 'line') {
        start = {x: +el3.attr('x1'), y: +el3.attr('y1')};
        end = {x: +el3.attr('x2'), y: +el3.attr('y2')};

        var dx = start.x - end.x;
        var dy = start.y - end.y;

        startRot = Math.atan2(dy, dx);
        endRot = startRot + Math.PI;
        if(backOff) {
            if(backOff * backOff > dx * dx + dy * dy) {
                hideLine();
                return;
            }
            var backOffX = backOff * Math.cos(startRot),
                backOffY = backOff * Math.sin(startRot);

            if(doStart) {
                start.x -= backOffX;
                start.y -= backOffY;
                el3.attr({x1: start.x, y1: start.y});
            }
            if(doEnd) {
                end.x += backOffX;
                end.y += backOffY;
                el3.attr({x2: end.x, y2: end.y});
            }
        }
    }
    else if(el.nodeName === 'path') {
        var pathlen = el.getTotalLength(),
            // using dash to hide the backOff region of the path.
            // if we ever allow dash for the arrow we'll have to
            // do better than this hack... maybe just manually
            // combine the two
            dashArray = '';

        if(pathlen < backOff) {
            hideLine();
            return;
        }

        if(doStart) {
            var start0 = el.getPointAtLength(0);
            var dstart = el.getPointAtLength(0.1);

            startRot = Math.atan2(start0.y - dstart.y, start0.x - dstart.x);
            start = el.getPointAtLength(Math.min(backOff, pathlen));

            if(backOff) dashArray = '0px,' + backOff + 'px,';
        }

        if(doEnd) {
            var end0 = el.getPointAtLength(pathlen);
            var dend = el.getPointAtLength(pathlen - 0.1);

            endRot = Math.atan2(end0.y - dend.y, end0.x - dend.x);
            end = el.getPointAtLength(Math.max(0, pathlen - backOff));

            if(backOff) {
                var shortening = dashArray ? 2 * backOff : backOff;
                dashArray += (pathlen - shortening) + 'px,' + pathlen + 'px';
            }
        }
        else if(dashArray) dashArray += pathlen + 'px';

        if(dashArray) el3.style('stroke-dasharray', dashArray);
    }

    function hideLine() { el3.style('stroke-dasharray', '0px,100px'); }

    function drawhead(p, rot) {
        if(!headStyle.path) return;
        if(headStyle.noRotate) rot = 0;

        d3.select(el.parentNode).append('path')
            .attr({
                'class': el3.attr('class'),
                d: headStyle.path,
                transform:
                    'translate(' + p.x + ',' + p.y + ')' +
                    (rot ? 'rotate(' + (rot * 180 / Math.PI) + ')' : '') +
                    'scale(' + scale + ')'
            })
            .style({
                fill: Color.rgb(options.arrowcolor),
                'stroke-width': 0
            });
    }

    if(doStart) drawhead(start, startRot);
    if(doEnd) drawhead(end, endRot);
};

},{"../color":233,"./arrow_paths":217,"d3":62}],226:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var drawModule = require('./draw');
var clickModule = require('./click');

module.exports = {
    moduleType: 'component',
    name: 'annotations',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    calcAutorange: require('./calc_autorange'),
    draw: drawModule.draw,
    drawOne: drawModule.drawOne,
    drawRaw: drawModule.drawRaw,

    hasClickToShow: clickModule.hasClickToShow,
    onClick: clickModule.onClick,

    convertCoords: require('./convert_coords')
};

},{"./attributes":218,"./calc_autorange":219,"./click":220,"./convert_coords":222,"./defaults":223,"./draw":224}],227:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var annAtts = require('../annotations/attributes');
var overrideAll = require('../../plot_api/edit_types').overrideAll;

module.exports = overrideAll({
    _isLinkedToArray: 'annotation',

    visible: annAtts.visible,
    x: {
        valType: 'any',
        
        
    },
    y: {
        valType: 'any',
        
        
    },
    z: {
        valType: 'any',
        
        
    },
    ax: {
        valType: 'number',
        
        
    },
    ay: {
        valType: 'number',
        
        
    },

    xanchor: annAtts.xanchor,
    xshift: annAtts.xshift,
    yanchor: annAtts.yanchor,
    yshift: annAtts.yshift,

    text: annAtts.text,
    textangle: annAtts.textangle,
    font: annAtts.font,
    width: annAtts.width,
    height: annAtts.height,
    opacity: annAtts.opacity,
    align: annAtts.align,
    valign: annAtts.valign,
    bgcolor: annAtts.bgcolor,
    bordercolor: annAtts.bordercolor,
    borderpad: annAtts.borderpad,
    borderwidth: annAtts.borderwidth,
    showarrow: annAtts.showarrow,
    arrowcolor: annAtts.arrowcolor,
    arrowhead: annAtts.arrowhead,
    arrowsize: annAtts.arrowsize,
    arrowwidth: annAtts.arrowwidth,
    standoff: annAtts.standoff,
    hovertext: annAtts.hovertext,
    hoverlabel: annAtts.hoverlabel,
    captureevents: annAtts.captureevents,

    // maybes later?
    // clicktoshow: annAtts.clicktoshow,
    // xclick: annAtts.xclick,
    // yclick: annAtts.yclick,

    // not needed!
    // axref: 'pixel'
    // ayref: 'pixel'
    // xref: 'x'
    // yref: 'y
    // zref: 'z'
}, 'calc', 'from-root');

},{"../../plot_api/edit_types":380,"../annotations/attributes":218}],228:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

module.exports = function convert(scene) {
    var fullSceneLayout = scene.fullSceneLayout;
    var anns = fullSceneLayout.annotations;

    for(var i = 0; i < anns.length; i++) {
        mockAnnAxes(anns[i], scene);
    }

    scene.fullLayout._infolayer
        .selectAll('.annotation-' + scene.id)
        .remove();
};

function mockAnnAxes(ann, scene) {
    var fullSceneLayout = scene.fullSceneLayout;
    var domain = fullSceneLayout.domain;
    var size = scene.fullLayout._size;

    var base = {
        // this gets fill in on render
        pdata: null,

        // to get setConvert to not execute cleanly
        type: 'linear',

        // don't try to update them on `editable: true`
        autorange: false,

        // set infinite range so that annotation draw routine
        // does not try to remove 'outside-range' annotations,
        // this case is handled in the render loop
        range: [-Infinity, Infinity]
    };

    ann._xa = {};
    Lib.extendFlat(ann._xa, base);
    Axes.setConvert(ann._xa);
    ann._xa._offset = size.l + domain.x[0] * size.w;
    ann._xa.l2p = function() {
        return 0.5 * (1 + ann.pdata[0] / ann.pdata[3]) * size.w * (domain.x[1] - domain.x[0]);
    };

    ann._ya = {};
    Lib.extendFlat(ann._ya, base);
    Axes.setConvert(ann._ya);
    ann._ya._offset = size.t + (1 - domain.y[1]) * size.h;
    ann._ya.l2p = function() {
        return 0.5 * (1 - ann.pdata[1] / ann.pdata[3]) * size.h * (domain.y[1] - domain.y[0]);
    };
}

},{"../../lib":353,"../../plots/cartesian/axes":396}],229:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');
var handleAnnotationCommonDefaults = require('../annotations/common_defaults');
var attributes = require('./attributes');

module.exports = function handleDefaults(sceneLayoutIn, sceneLayoutOut, opts) {
    handleArrayContainerDefaults(sceneLayoutIn, sceneLayoutOut, {
        name: 'annotations',
        handleItemDefaults: handleAnnotationDefaults,
        fullLayout: opts.fullLayout
    });
};

function handleAnnotationDefaults(annIn, annOut, sceneLayout, opts, itemOpts) {
    function coerce(attr, dflt) {
        return Lib.coerce(annIn, annOut, attributes, attr, dflt);
    }

    function coercePosition(axLetter) {
        var axName = axLetter + 'axis';

        // mock in such way that getFromId grabs correct 3D axis
        var gdMock = { _fullLayout: {} };
        gdMock._fullLayout[axName] = sceneLayout[axName];

        return Axes.coercePosition(annOut, gdMock, coerce, axLetter, axLetter, 0.5);
    }


    var visible = coerce('visible', !itemOpts.itemIsNotPlainObject);
    if(!visible) return annOut;

    handleAnnotationCommonDefaults(annIn, annOut, opts.fullLayout, coerce);

    coercePosition('x');
    coercePosition('y');
    coercePosition('z');

    // if you have one coordinate you should all three
    Lib.noneOrAll(annIn, annOut, ['x', 'y', 'z']);

    // hard-set here for completeness
    annOut.xref = 'x';
    annOut.yref = 'y';
    annOut.zref = 'z';

    coerce('xanchor');
    coerce('yanchor');
    coerce('xshift');
    coerce('yshift');

    if(annOut.showarrow) {
        annOut.axref = 'pixel';
        annOut.ayref = 'pixel';

        // TODO maybe default values should be bigger than the 2D case?
        coerce('ax', -10);
        coerce('ay', -30);

        // if you have one part of arrow length you should have both
        Lib.noneOrAll(annIn, annOut, ['ax', 'ay']);
    }

    return annOut;
}

},{"../../lib":353,"../../plots/array_container_defaults":393,"../../plots/cartesian/axes":396,"../annotations/common_defaults":221,"./attributes":227}],230:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var drawRaw = require('../annotations/draw').drawRaw;
var project = require('../../plots/gl3d/project');
var axLetters = ['x', 'y', 'z'];

module.exports = function draw(scene) {
    var fullSceneLayout = scene.fullSceneLayout;
    var dataScale = scene.dataScale;
    var anns = fullSceneLayout.annotations;

    for(var i = 0; i < anns.length; i++) {
        var ann = anns[i];
        var annotationIsOffscreen = false;

        for(var j = 0; j < 3; j++) {
            var axLetter = axLetters[j];
            var pos = ann[axLetter];
            var ax = fullSceneLayout[axLetter + 'axis'];
            var posFraction = ax.r2fraction(pos);

            if(posFraction < 0 || posFraction > 1) {
                annotationIsOffscreen = true;
                break;
            }
        }

        if(annotationIsOffscreen) {
            scene.fullLayout._infolayer
                .select('.annotation-' + scene.id + '[data-index="' + i + '"]')
                .remove();
        } else {
            ann.pdata = project(scene.glplot.cameraParams, [
                fullSceneLayout.xaxis.r2l(ann.x) * dataScale[0],
                fullSceneLayout.yaxis.r2l(ann.y) * dataScale[1],
                fullSceneLayout.zaxis.r2l(ann.z) * dataScale[2]
            ]);

            drawRaw(scene.graphDiv, ann, i, scene.id, ann._xa, ann._ya);
        }
    }
};

},{"../../plots/gl3d/project":426,"../annotations/draw":224}],231:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'annotations3d',

    schema: {
        subplots: {
            scene: {annotations: require('./attributes')}
        }
    },

    layoutAttributes: require('./attributes'),
    handleDefaults: require('./defaults'),

    convert: require('./convert'),
    draw: require('./draw')
};

},{"./attributes":227,"./convert":228,"./defaults":229,"./draw":230}],232:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


// IMPORTANT - default colors should be in hex for compatibility
exports.defaults = [
    '#1f77b4',  // muted blue
    '#ff7f0e',  // safety orange
    '#2ca02c',  // cooked asparagus green
    '#d62728',  // brick red
    '#9467bd',  // muted purple
    '#8c564b',  // chestnut brown
    '#e377c2',  // raspberry yogurt pink
    '#7f7f7f',  // middle gray
    '#bcbd22',  // curry yellow-green
    '#17becf'   // blue-teal
];

exports.defaultLine = '#444';

exports.lightLine = '#eee';

exports.background = '#fff';

exports.borderLine = '#BEC8D9';

// with axis.color and Color.interp we aren't using lightLine
// itself anymore, instead interpolating between axis.color
// and the background color using tinycolor.mix. lightFraction
// gives back exactly lightLine if the other colors are defaults.
exports.lightFraction = 100 * (0xe - 0x4) / (0xf - 0x4);

},{}],233:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');
var isNumeric = require('fast-isnumeric');

var color = module.exports = {};

var colorAttrs = require('./attributes');
color.defaults = colorAttrs.defaults;
var defaultLine = color.defaultLine = colorAttrs.defaultLine;
color.lightLine = colorAttrs.lightLine;
var background = color.background = colorAttrs.background;

/*
 * tinyRGB: turn a tinycolor into an rgb string, but
 * unlike the built-in tinycolor.toRgbString this never includes alpha
 */
color.tinyRGB = function(tc) {
    var c = tc.toRgb();
    return 'rgb(' + Math.round(c.r) + ', ' +
        Math.round(c.g) + ', ' + Math.round(c.b) + ')';
};

color.rgb = function(cstr) { return color.tinyRGB(tinycolor(cstr)); };

color.opacity = function(cstr) { return cstr ? tinycolor(cstr).getAlpha() : 0; };

color.addOpacity = function(cstr, op) {
    var c = tinycolor(cstr).toRgb();
    return 'rgba(' + Math.round(c.r) + ', ' +
        Math.round(c.g) + ', ' + Math.round(c.b) + ', ' + op + ')';
};

// combine two colors into one apparent color
// if back has transparency or is missing,
// color.background is assumed behind it
color.combine = function(front, back) {
    var fc = tinycolor(front).toRgb();
    if(fc.a === 1) return tinycolor(front).toRgbString();

    var bc = tinycolor(back || background).toRgb(),
        bcflat = bc.a === 1 ? bc : {
            r: 255 * (1 - bc.a) + bc.r * bc.a,
            g: 255 * (1 - bc.a) + bc.g * bc.a,
            b: 255 * (1 - bc.a) + bc.b * bc.a
        },
        fcflat = {
            r: bcflat.r * (1 - fc.a) + fc.r * fc.a,
            g: bcflat.g * (1 - fc.a) + fc.g * fc.a,
            b: bcflat.b * (1 - fc.a) + fc.b * fc.a
        };
    return tinycolor(fcflat).toRgbString();
};

/*
 * Create a color that contrasts with cstr.
 *
 * If cstr is a dark color, we lighten it; if it's light, we darken.
 *
 * If lightAmount / darkAmount are used, we adjust by these percentages,
 * otherwise we go all the way to white or black.
 */
color.contrast = function(cstr, lightAmount, darkAmount) {
    var tc = tinycolor(cstr);

    if(tc.getAlpha() !== 1) tc = tinycolor(color.combine(cstr, background));

    var newColor = tc.isDark() ?
        (lightAmount ? tc.lighten(lightAmount) : background) :
        (darkAmount ? tc.darken(darkAmount) : defaultLine);

    return newColor.toString();
};

color.stroke = function(s, c) {
    var tc = tinycolor(c);
    s.style({'stroke': color.tinyRGB(tc), 'stroke-opacity': tc.getAlpha()});
};

color.fill = function(s, c) {
    var tc = tinycolor(c);
    s.style({
        'fill': color.tinyRGB(tc),
        'fill-opacity': tc.getAlpha()
    });
};

// search container for colors with the deprecated rgb(fractions) format
// and convert them to rgb(0-255 values)
color.clean = function(container) {
    if(!container || typeof container !== 'object') return;

    var keys = Object.keys(container),
        i,
        j,
        key,
        val;

    for(i = 0; i < keys.length; i++) {
        key = keys[i];
        val = container[key];

        // only sanitize keys that end in "color" or "colorscale"
        if(key.substr(key.length - 5) === 'color') {
            if(Array.isArray(val)) {
                for(j = 0; j < val.length; j++) val[j] = cleanOne(val[j]);
            }
            else container[key] = cleanOne(val);
        }
        else if(key.substr(key.length - 10) === 'colorscale' && Array.isArray(val)) {
            // colorscales have the format [[0, color1], [frac, color2], ... [1, colorN]]
            for(j = 0; j < val.length; j++) {
                if(Array.isArray(val[j])) val[j][1] = cleanOne(val[j][1]);
            }
        }
        // recurse into arrays of objects, and plain objects
        else if(Array.isArray(val)) {
            var el0 = val[0];
            if(!Array.isArray(el0) && el0 && typeof el0 === 'object') {
                for(j = 0; j < val.length; j++) color.clean(val[j]);
            }
        }
        else if(val && typeof val === 'object') color.clean(val);
    }
};

function cleanOne(val) {
    if(isNumeric(val) || typeof val !== 'string') return val;

    var valTrim = val.trim();
    if(valTrim.substr(0, 3) !== 'rgb') return val;

    var match = valTrim.match(/^rgba?\s*\(([^()]*)\)$/);
    if(!match) return val;

    var parts = match[1].trim().split(/\s*[\s,]\s*/),
        rgba = valTrim.charAt(3) === 'a' && parts.length === 4;
    if(!rgba && parts.length !== 3) return val;

    for(var i = 0; i < parts.length; i++) {
        if(!parts[i].length) return val;
        parts[i] = Number(parts[i]);

        // all parts must be non-negative numbers
        if(!(parts[i] >= 0)) return val;
        // alpha>1 gets clipped to 1
        if(i === 3) {
            if(parts[i] > 1) parts[i] = 1;
        }
        // r, g, b must be < 1 (ie 1 itself is not allowed)
        else if(parts[i] >= 1) return val;
    }

    var rgbStr = Math.round(parts[0] * 255) + ', ' +
        Math.round(parts[1] * 255) + ', ' +
        Math.round(parts[2] * 255);

    if(rgba) return 'rgba(' + rgbStr + ', ' + parts[3] + ')';
    return 'rgb(' + rgbStr + ')';
}

},{"./attributes":232,"fast-isnumeric":68,"tinycolor2":200}],234:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var axesAttrs = require('../../plots/cartesian/layout_attributes');
var fontAttrs = require('../../plots/font_attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var overrideAll = require('../../plot_api/edit_types').overrideAll;


module.exports = overrideAll({
// TODO: only right is supported currently
//     orient: {
//         valType: 'enumerated',
//         
//         values: ['left', 'right', 'top', 'bottom'],
//         dflt: 'right',
//         
//     },
    thicknessmode: {
        valType: 'enumerated',
        values: ['fraction', 'pixels'],
        
        dflt: 'pixels',
        
    },
    thickness: {
        valType: 'number',
        
        min: 0,
        dflt: 30,
        
    },
    lenmode: {
        valType: 'enumerated',
        values: ['fraction', 'pixels'],
        
        dflt: 'fraction',
        
    },
    len: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        
    },
    x: {
        valType: 'number',
        dflt: 1.02,
        min: -2,
        max: 3,
        
        
    },
    xanchor: {
        valType: 'enumerated',
        values: ['left', 'center', 'right'],
        dflt: 'left',
        
        
    },
    xpad: {
        valType: 'number',
        
        min: 0,
        dflt: 10,
        
    },
    y: {
        valType: 'number',
        
        dflt: 0.5,
        min: -2,
        max: 3,
        
    },
    yanchor: {
        valType: 'enumerated',
        values: ['top', 'middle', 'bottom'],
        
        dflt: 'middle',
        
    },
    ypad: {
        valType: 'number',
        
        min: 0,
        dflt: 10,
        
    },
    // a possible line around the bar itself
    outlinecolor: axesAttrs.linecolor,
    outlinewidth: axesAttrs.linewidth,
    // Should outlinewidth have {dflt: 0} ?
    // another possible line outside the padding and tick labels
    bordercolor: axesAttrs.linecolor,
    borderwidth: {
        valType: 'number',
        
        min: 0,
        dflt: 0,
        
    },
    bgcolor: {
        valType: 'color',
        
        dflt: 'rgba(0,0,0,0)',
        
    },
    // tick and title properties named and function exactly as in axes
    tickmode: axesAttrs.tickmode,
    nticks: axesAttrs.nticks,
    tick0: axesAttrs.tick0,
    dtick: axesAttrs.dtick,
    tickvals: axesAttrs.tickvals,
    ticktext: axesAttrs.ticktext,
    ticks: extendFlat({}, axesAttrs.ticks, {dflt: ''}),
    ticklen: axesAttrs.ticklen,
    tickwidth: axesAttrs.tickwidth,
    tickcolor: axesAttrs.tickcolor,
    showticklabels: axesAttrs.showticklabels,
    tickfont: fontAttrs({
        
    }),
    tickangle: axesAttrs.tickangle,
    tickformat: axesAttrs.tickformat,
    tickprefix: axesAttrs.tickprefix,
    showtickprefix: axesAttrs.showtickprefix,
    ticksuffix: axesAttrs.ticksuffix,
    showticksuffix: axesAttrs.showticksuffix,
    separatethousands: axesAttrs.separatethousands,
    exponentformat: axesAttrs.exponentformat,
    showexponent: axesAttrs.showexponent,
    title: {
        valType: 'string',
        
        dflt: 'Click to enter colorscale title',
        
    },
    titlefont: fontAttrs({
        
    }),
    titleside: {
        valType: 'enumerated',
        values: ['right', 'top', 'bottom'],
        
        dflt: 'top',
        
    }
}, 'colorbars', 'from-root');

},{"../../lib/extend":344,"../../plot_api/edit_types":380,"../../plots/cartesian/layout_attributes":407,"../../plots/font_attributes":420}],235:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var handleTickValueDefaults = require('../../plots/cartesian/tick_value_defaults');
var handleTickMarkDefaults = require('../../plots/cartesian/tick_mark_defaults');
var handleTickLabelDefaults = require('../../plots/cartesian/tick_label_defaults');

var attributes = require('./attributes');


module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
    var colorbarOut = containerOut.colorbar = {},
        colorbarIn = containerIn.colorbar || {};

    function coerce(attr, dflt) {
        return Lib.coerce(colorbarIn, colorbarOut, attributes, attr, dflt);
    }

    var thicknessmode = coerce('thicknessmode');
    coerce('thickness', (thicknessmode === 'fraction') ?
        30 / (layout.width - layout.margin.l - layout.margin.r) :
        30
    );

    var lenmode = coerce('lenmode');
    coerce('len', (lenmode === 'fraction') ?
        1 :
        layout.height - layout.margin.t - layout.margin.b
    );

    coerce('x');
    coerce('xanchor');
    coerce('xpad');
    coerce('y');
    coerce('yanchor');
    coerce('ypad');
    Lib.noneOrAll(colorbarIn, colorbarOut, ['x', 'y']);

    coerce('outlinecolor');
    coerce('outlinewidth');
    coerce('bordercolor');
    coerce('borderwidth');
    coerce('bgcolor');

    handleTickValueDefaults(colorbarIn, colorbarOut, coerce, 'linear');

    handleTickLabelDefaults(colorbarIn, colorbarOut, coerce, 'linear',
        {outerTicks: false, font: layout.font, noHover: true});

    handleTickMarkDefaults(colorbarIn, colorbarOut, coerce, 'linear',
        {outerTicks: false, font: layout.font, noHover: true});

    coerce('title');
    Lib.coerceFont(coerce, 'titlefont', layout.font);
    coerce('titleside');
};

},{"../../lib":353,"../../plots/cartesian/tick_label_defaults":414,"../../plots/cartesian/tick_mark_defaults":415,"../../plots/cartesian/tick_value_defaults":416,"./attributes":234}],236:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');
var dragElement = require('../dragelement');
var Lib = require('../../lib');
var extendFlat = require('../../lib/extend').extendFlat;
var setCursor = require('../../lib/setcursor');
var Drawing = require('../drawing');
var Color = require('../color');
var Titles = require('../titles');
var svgTextUtils = require('../../lib/svg_text_utils');
var LINE_SPACING = require('../../constants/alignment').LINE_SPACING;

var handleAxisDefaults = require('../../plots/cartesian/axis_defaults');
var handleAxisPositionDefaults = require('../../plots/cartesian/position_defaults');
var axisLayoutAttrs = require('../../plots/cartesian/layout_attributes');

var attributes = require('./attributes');


module.exports = function draw(gd, id) {
    // opts: options object, containing everything from attributes
    // plus a few others that are the equivalent of the colorbar "data"
    var opts = {};
    Object.keys(attributes).forEach(function(k) {
        opts[k] = null;
    });
    // fillcolor can be a d3 scale, domain is z values, range is colors
    // or leave it out for no fill,
    // or set to a string constant for single-color fill
    opts.fillcolor = null;
    // line.color has the same options as fillcolor
    opts.line = {color: null, width: null, dash: null};
    // levels of lines to draw.
    // note that this DOES NOT determine the extent of the bar
    // that's given by the domain of fillcolor
    // (or line.color if no fillcolor domain)
    opts.levels = {start: null, end: null, size: null};
    // separate fill levels (for example, heatmap coloring of a
    // contour map) if this is omitted, fillcolors will be
    // evaluated halfway between levels
    opts.filllevels = null;

    function component() {
        var fullLayout = gd._fullLayout,
            gs = fullLayout._size;
        if((typeof opts.fillcolor !== 'function') &&
                (typeof opts.line.color !== 'function')) {
            fullLayout._infolayer.selectAll('g.' + id).remove();
            return;
        }
        var zrange = d3.extent(((typeof opts.fillcolor === 'function') ?
            opts.fillcolor : opts.line.color).domain());
        var linelevels = [];
        var filllevels = [];
        var linecolormap = typeof opts.line.color === 'function' ?
            opts.line.color : function() { return opts.line.color; };
        var fillcolormap = typeof opts.fillcolor === 'function' ?
            opts.fillcolor : function() { return opts.fillcolor; };
        var l;
        var i;

        var l0 = opts.levels.end + opts.levels.size / 100,
            ls = opts.levels.size,
            zr0 = (1.001 * zrange[0] - 0.001 * zrange[1]),
            zr1 = (1.001 * zrange[1] - 0.001 * zrange[0]);
        for(i = 0; i < 1e5; i++) {
            l = opts.levels.start + i * ls;
            if(ls > 0 ? (l >= l0) : (l <= l0)) break;
            if(l > zr0 && l < zr1) linelevels.push(l);
        }

        if(typeof opts.fillcolor === 'function') {
            if(opts.filllevels) {
                l0 = opts.filllevels.end + opts.filllevels.size / 100;
                ls = opts.filllevels.size;
                for(i = 0; i < 1e5; i++) {
                    l = opts.filllevels.start + i * ls;
                    if(ls > 0 ? (l >= l0) : (l <= l0)) break;
                    if(l > zrange[0] && l < zrange[1]) filllevels.push(l);
                }
            }
            else {
                filllevels = linelevels.map(function(v) {
                    return v - opts.levels.size / 2;
                });
                filllevels.push(filllevels[filllevels.length - 1] +
                    opts.levels.size);
            }
        }
        else if(opts.fillcolor && typeof opts.fillcolor === 'string') {
            // doesn't matter what this value is, with a single value
            // we'll make a single fill rect covering the whole bar
            filllevels = [0];
        }

        if(opts.levels.size < 0) {
            linelevels.reverse();
            filllevels.reverse();
        }

        // now make a Plotly Axes object to scale with and draw ticks
        // TODO: does not support orientation other than right

        // we calculate pixel sizes based on the specified graph size,
        // not the actual (in case something pushed the margins around)
        // which is a little odd but avoids an odd iterative effect
        // when the colorbar itself is pushing the margins.
        // but then the fractional size is calculated based on the
        // actual graph size, so that the axes will size correctly.
        var originalPlotHeight = fullLayout.height - fullLayout.margin.t - fullLayout.margin.b,
            originalPlotWidth = fullLayout.width - fullLayout.margin.l - fullLayout.margin.r,
            thickPx = Math.round(opts.thickness *
                (opts.thicknessmode === 'fraction' ? originalPlotWidth : 1)),
            thickFrac = thickPx / gs.w,
            lenPx = Math.round(opts.len *
                (opts.lenmode === 'fraction' ? originalPlotHeight : 1)),
            lenFrac = lenPx / gs.h,
            xpadFrac = opts.xpad / gs.w,
            yExtraPx = (opts.borderwidth + opts.outlinewidth) / 2,
            ypadFrac = opts.ypad / gs.h,

            // x positioning: do it initially just for left anchor,
            // then fix at the end (since we don't know the width yet)
            xLeft = Math.round(opts.x * gs.w + opts.xpad),
            // for dragging... this is getting a little muddled...
            xLeftFrac = opts.x - thickFrac *
                ({middle: 0.5, right: 1}[opts.xanchor]||0),

            // y positioning we can do correctly from the start
            yBottomFrac = opts.y + lenFrac *
                (({top: -0.5, bottom: 0.5}[opts.yanchor] || 0) - 0.5),
            yBottomPx = Math.round(gs.h * (1 - yBottomFrac)),
            yTopPx = yBottomPx - lenPx,
            titleEl,
            cbAxisIn = {
                type: 'linear',
                range: zrange,
                tickmode: opts.tickmode,
                nticks: opts.nticks,
                tick0: opts.tick0,
                dtick: opts.dtick,
                tickvals: opts.tickvals,
                ticktext: opts.ticktext,
                ticks: opts.ticks,
                ticklen: opts.ticklen,
                tickwidth: opts.tickwidth,
                tickcolor: opts.tickcolor,
                showticklabels: opts.showticklabels,
                tickfont: opts.tickfont,
                tickangle: opts.tickangle,
                tickformat: opts.tickformat,
                exponentformat: opts.exponentformat,
                separatethousands: opts.separatethousands,
                showexponent: opts.showexponent,
                showtickprefix: opts.showtickprefix,
                tickprefix: opts.tickprefix,
                showticksuffix: opts.showticksuffix,
                ticksuffix: opts.ticksuffix,
                title: opts.title,
                titlefont: opts.titlefont,
                showline: true,
                anchor: 'free',
                position: 1
            },
            cbAxisOut = {
                type: 'linear',
                _id: 'y' + id
            },
            axisOptions = {
                letter: 'y',
                font: fullLayout.font,
                noHover: true,
                calendar: fullLayout.calendar  // not really necessary (yet?)
            };

        // Coerce w.r.t. Axes layoutAttributes:
        // re-use axes.js logic without updating _fullData
        function coerce(attr, dflt) {
            return Lib.coerce(cbAxisIn, cbAxisOut, axisLayoutAttrs, attr, dflt);
        }

        // Prepare the Plotly axis object
        handleAxisDefaults(cbAxisIn, cbAxisOut, coerce, axisOptions, fullLayout);
        handleAxisPositionDefaults(cbAxisIn, cbAxisOut, coerce, axisOptions);

        // position can't go in through supplyDefaults
        // because that restricts it to [0,1]
        cbAxisOut.position = opts.x + xpadFrac + thickFrac;

        // save for other callers to access this axis
        component.axis = cbAxisOut;

        if(['top', 'bottom'].indexOf(opts.titleside) !== -1) {
            cbAxisOut.titleside = opts.titleside;
            cbAxisOut.titlex = opts.x + xpadFrac;
            cbAxisOut.titley = yBottomFrac +
                (opts.titleside === 'top' ? lenFrac - ypadFrac : ypadFrac);
        }

        if(opts.line.color && opts.tickmode === 'auto') {
            cbAxisOut.tickmode = 'linear';
            cbAxisOut.tick0 = opts.levels.start;
            var dtick = opts.levels.size;
            // expand if too many contours, so we don't get too many ticks
            var autoNtick = Lib.constrain(
                    (yBottomPx - yTopPx) / 50, 4, 15) + 1,
                dtFactor = (zrange[1] - zrange[0]) /
                    ((opts.nticks || autoNtick) * dtick);
            if(dtFactor > 1) {
                var dtexp = Math.pow(10, Math.floor(
                    Math.log(dtFactor) / Math.LN10));
                dtick *= dtexp * Lib.roundUp(dtFactor / dtexp, [2, 5, 10]);
                // if the contours are at round multiples, reset tick0
                // so they're still at round multiples. Otherwise,
                // keep the first label on the first contour level
                if((Math.abs(opts.levels.start) /
                        opts.levels.size + 1e-6) % 1 < 2e-6) {
                    cbAxisOut.tick0 = 0;
                }
            }
            cbAxisOut.dtick = dtick;
        }

        // set domain after init, because we may want to
        // allow it outside [0,1]
        cbAxisOut.domain = [
            yBottomFrac + ypadFrac,
            yBottomFrac + lenFrac - ypadFrac
        ];
        cbAxisOut.setScale();

        // now draw the elements
        var container = fullLayout._infolayer.selectAll('g.' + id).data([0]);
        container.enter().append('g').classed(id, true)
            .each(function() {
                var s = d3.select(this);
                s.append('rect').classed('cbbg', true);
                s.append('g').classed('cbfills', true);
                s.append('g').classed('cblines', true);
                s.append('g').classed('cbaxis', true).classed('crisp', true);
                s.append('g').classed('cbtitleunshift', true)
                    .append('g').classed('cbtitle', true);
                s.append('rect').classed('cboutline', true);
                s.select('.cbtitle').datum(0);
            });
        container.attr('transform', 'translate(' + Math.round(gs.l) +
            ',' + Math.round(gs.t) + ')');
        // TODO: this opposite transform is a hack until we make it
        // more rational which items get this offset
        var titleCont = container.select('.cbtitleunshift')
            .attr('transform', 'translate(-' +
                Math.round(gs.l) + ',-' +
                Math.round(gs.t) + ')');

        cbAxisOut._axislayer = container.select('.cbaxis');
        var titleHeight = 0;
        if(['top', 'bottom'].indexOf(opts.titleside) !== -1) {
            // draw the title so we know how much room it needs
            // when we squish the axis. This one only applies to
            // top or bottom titles, not right side.
            var x = gs.l + (opts.x + xpadFrac) * gs.w,
                fontSize = cbAxisOut.titlefont.size,
                y;

            if(opts.titleside === 'top') {
                y = (1 - (yBottomFrac + lenFrac - ypadFrac)) * gs.h +
                    gs.t + 3 + fontSize * 0.75;
            }
            else {
                y = (1 - (yBottomFrac + ypadFrac)) * gs.h +
                    gs.t - 3 - fontSize * 0.25;
            }
            drawTitle(cbAxisOut._id + 'title', {
                attributes: {x: x, y: y, 'text-anchor': 'start'}
            });
        }

        function drawAxis() {
            if(['top', 'bottom'].indexOf(opts.titleside) !== -1) {
                // squish the axis top to make room for the title
                var titleGroup = container.select('.cbtitle'),
                    titleText = titleGroup.select('text'),
                    titleTrans =
                        [-opts.outlinewidth / 2, opts.outlinewidth / 2],
                    mathJaxNode = titleGroup
                        .select('.h' + cbAxisOut._id + 'title-math-group')
                        .node(),
                    lineSize = 15.6;
                if(titleText.node()) {
                    lineSize =
                        parseInt(titleText.node().style.fontSize, 10) * LINE_SPACING;
                }
                if(mathJaxNode) {
                    titleHeight = Drawing.bBox(mathJaxNode).height;
                    if(titleHeight > lineSize) {
                        // not entirely sure how mathjax is doing
                        // vertical alignment, but this seems to work.
                        titleTrans[1] -= (titleHeight - lineSize) / 2;
                    }
                }
                else if(titleText.node() &&
                        !titleText.classed('js-placeholder')) {
                    titleHeight = Drawing.bBox(titleText.node()).height;
                }
                if(titleHeight) {
                    // buffer btwn colorbar and title
                    // TODO: configurable
                    titleHeight += 5;

                    if(opts.titleside === 'top') {
                        cbAxisOut.domain[1] -= titleHeight / gs.h;
                        titleTrans[1] *= -1;
                    }
                    else {
                        cbAxisOut.domain[0] += titleHeight / gs.h;
                        var nlines = svgTextUtils.lineCount(titleText);
                        titleTrans[1] += (1 - nlines) * lineSize;
                    }

                    titleGroup.attr('transform',
                        'translate(' + titleTrans + ')');

                    cbAxisOut.setScale();
                }
            }

            container.selectAll('.cbfills,.cblines,.cbaxis')
                .attr('transform', 'translate(0,' +
                    Math.round(gs.h * (1 - cbAxisOut.domain[1])) + ')');

            var fills = container.select('.cbfills')
                .selectAll('rect.cbfill')
                    .data(filllevels);
            fills.enter().append('rect')
                .classed('cbfill', true)
                .style('stroke', 'none');
            fills.exit().remove();
            fills.each(function(d, i) {
                var z = [
                    (i === 0) ? zrange[0] :
                        (filllevels[i] + filllevels[i - 1]) / 2,
                    (i === filllevels.length - 1) ? zrange[1] :
                        (filllevels[i] + filllevels[i + 1]) / 2
                ]
                .map(cbAxisOut.c2p)
                .map(Math.round);

                // offset the side adjoining the next rectangle so they
                // overlap, to prevent antialiasing gaps
                if(i !== filllevels.length - 1) {
                    z[1] += (z[1] > z[0]) ? 1 : -1;
                }


                // Tinycolor can't handle exponents and
                // at this scale, removing it makes no difference.
                var colorString = fillcolormap(d).replace('e-', ''),
                    opaqueColor = tinycolor(colorString).toHexString();

                // Colorbar cannot currently support opacities so we
                // use an opaque fill even when alpha channels present
                d3.select(this).attr({
                    x: xLeft,
                    width: Math.max(thickPx, 2),
                    y: d3.min(z),
                    height: Math.max(d3.max(z) - d3.min(z), 2),
                    fill: opaqueColor
                });
            });

            var lines = container.select('.cblines')
                .selectAll('path.cbline')
                    .data(opts.line.color && opts.line.width ?
                        linelevels : []);
            lines.enter().append('path')
                .classed('cbline', true);
            lines.exit().remove();
            lines.each(function(d) {
                d3.select(this)
                    .attr('d', 'M' + xLeft + ',' +
                        (Math.round(cbAxisOut.c2p(d)) + (opts.line.width / 2) % 1) +
                        'h' + thickPx)
                    .call(Drawing.lineGroupStyle,
                        opts.line.width, linecolormap(d), opts.line.dash);
            });

            // force full redraw of labels and ticks
            cbAxisOut._axislayer.selectAll('g.' + cbAxisOut._id + 'tick,path')
                .remove();

            cbAxisOut._pos = xLeft + thickPx +
                (opts.outlinewidth||0) / 2 - (opts.ticks === 'outside' ? 1 : 0);
            cbAxisOut.side = 'right';

            // separate out axis and title drawing,
            // so we don't need such complicated logic in Titles.draw
            // if title is on the top or bottom, we've already drawn it
            // this title call only handles side=right
            return Lib.syncOrAsync([
                function() {
                    return Axes.doTicks(gd, cbAxisOut, true);
                },
                function() {
                    if(['top', 'bottom'].indexOf(opts.titleside) === -1) {
                        var fontSize = cbAxisOut.titlefont.size,
                            y = cbAxisOut._offset + cbAxisOut._length / 2,
                            x = gs.l + (cbAxisOut.position || 0) * gs.w + ((cbAxisOut.side === 'right') ?
                                10 + fontSize * ((cbAxisOut.showticklabels ? 1 : 0.5)) :
                                -10 - fontSize * ((cbAxisOut.showticklabels ? 0.5 : 0)));

                        // the 'h' + is a hack to get around the fact that
                        // convertToTspans rotates any 'y...' class by 90 degrees.
                        // TODO: find a better way to control this.
                        drawTitle('h' + cbAxisOut._id + 'title', {
                            avoid: {
                                selection: d3.select(gd).selectAll('g.' + cbAxisOut._id + 'tick'),
                                side: opts.titleside,
                                offsetLeft: gs.l,
                                offsetTop: gs.t,
                                maxShift: fullLayout.width
                            },
                            attributes: {x: x, y: y, 'text-anchor': 'middle'},
                            transform: {rotate: '-90', offset: 0}
                        });
                    }
                }]);
        }

        function drawTitle(titleClass, titleOpts) {
            var trace = getTrace(),
                propName;
            if(Registry.traceIs(trace, 'markerColorscale')) {
                propName = 'marker.colorbar.title';
            }
            else propName = 'colorbar.title';

            var dfltTitleOpts = {
                propContainer: cbAxisOut,
                propName: propName,
                traceIndex: trace.index,
                dfltName: 'colorscale',
                containerGroup: container.select('.cbtitle')
            };

            // this class-to-rotate thing with convertToTspans is
            // getting hackier and hackier... delete groups with the
            // wrong class (in case earlier the colorbar was drawn on
            // a different side, I think?)
            var otherClass = titleClass.charAt(0) === 'h' ?
                titleClass.substr(1) : ('h' + titleClass);
            container.selectAll('.' + otherClass + ',.' + otherClass + '-math-group')
                .remove();

            Titles.draw(gd, titleClass,
                extendFlat(dfltTitleOpts, titleOpts || {}));
        }

        function positionCB() {
            // wait for the axis & title to finish rendering before
            // continuing positioning
            // TODO: why are we redrawing multiple times now with this?
            // I guess autoMargin doesn't like being post-promise?
            var innerWidth = thickPx + opts.outlinewidth / 2 +
                    Drawing.bBox(cbAxisOut._axislayer.node()).width;
            titleEl = titleCont.select('text');
            if(titleEl.node() && !titleEl.classed('js-placeholder')) {
                var mathJaxNode = titleCont
                        .select('.h' + cbAxisOut._id + 'title-math-group')
                        .node(),
                    titleWidth;
                if(mathJaxNode &&
                        ['top', 'bottom'].indexOf(opts.titleside) !== -1) {
                    titleWidth = Drawing.bBox(mathJaxNode).width;
                }
                else {
                    // note: the formula below works for all titlesides,
                    // (except for top/bottom mathjax, above)
                    // but the weird gs.l is because the titleunshift
                    // transform gets removed by Drawing.bBox
                    titleWidth =
                        Drawing.bBox(titleCont.node()).right -
                        xLeft - gs.l;
                }
                innerWidth = Math.max(innerWidth, titleWidth);
            }

            var outerwidth = 2 * opts.xpad + innerWidth +
                    opts.borderwidth + opts.outlinewidth / 2,
                outerheight = yBottomPx - yTopPx;

            container.select('.cbbg').attr({
                x: xLeft - opts.xpad -
                    (opts.borderwidth + opts.outlinewidth) / 2,
                y: yTopPx - yExtraPx,
                width: Math.max(outerwidth, 2),
                height: Math.max(outerheight + 2 * yExtraPx, 2)
            })
            .call(Color.fill, opts.bgcolor)
            .call(Color.stroke, opts.bordercolor)
            .style({'stroke-width': opts.borderwidth});

            container.selectAll('.cboutline').attr({
                x: xLeft,
                y: yTopPx + opts.ypad +
                    (opts.titleside === 'top' ? titleHeight : 0),
                width: Math.max(thickPx, 2),
                height: Math.max(outerheight - 2 * opts.ypad - titleHeight, 2)
            })
            .call(Color.stroke, opts.outlinecolor)
            .style({
                fill: 'None',
                'stroke-width': opts.outlinewidth
            });

            // fix positioning for xanchor!='left'
            var xoffset = ({center: 0.5, right: 1}[opts.xanchor] || 0) *
                outerwidth;
            container.attr('transform',
                'translate(' + (gs.l - xoffset) + ',' + gs.t + ')');

            // auto margin adjustment
            Plots.autoMargin(gd, id, {
                x: opts.x,
                y: opts.y,
                l: outerwidth * ({right: 1, center: 0.5}[opts.xanchor] || 0),
                r: outerwidth * ({left: 1, center: 0.5}[opts.xanchor] || 0),
                t: outerheight * ({bottom: 1, middle: 0.5}[opts.yanchor] || 0),
                b: outerheight * ({top: 1, middle: 0.5}[opts.yanchor] || 0)
            });
        }

        var cbDone = Lib.syncOrAsync([
            Plots.previousPromises,
            drawAxis,
            Plots.previousPromises,
            positionCB
        ], gd);

        if(cbDone && cbDone.then) (gd._promises || []).push(cbDone);

        // dragging...
        if(gd._context.edits.colorbarPosition) {
            var t0,
                xf,
                yf;

            dragElement.init({
                element: container.node(),
                gd: gd,
                prepFn: function() {
                    t0 = container.attr('transform');
                    setCursor(container);
                },
                moveFn: function(dx, dy) {
                    container.attr('transform',
                        t0 + ' ' + 'translate(' + dx + ',' + dy + ')');

                    xf = dragElement.align(xLeftFrac + (dx / gs.w), thickFrac,
                        0, 1, opts.xanchor);
                    yf = dragElement.align(yBottomFrac - (dy / gs.h), lenFrac,
                        0, 1, opts.yanchor);

                    var csr = dragElement.getCursor(xf, yf,
                        opts.xanchor, opts.yanchor);
                    setCursor(container, csr);
                },
                doneFn: function(dragged) {
                    setCursor(container);

                    if(dragged && xf !== undefined && yf !== undefined) {
                        Plotly.restyle(gd,
                            {'colorbar.x': xf, 'colorbar.y': yf},
                            getTrace().index);
                    }
                }
            });
        }
        return cbDone;
    }

    function getTrace() {
        var idNum = id.substr(2),
            i,
            trace;
        for(i = 0; i < gd._fullData.length; i++) {
            trace = gd._fullData[i];
            if(trace.uid === idNum) return trace;
        }
    }

    // setter/getters for every item defined in opts
    Object.keys(opts).forEach(function(name) {
        component[name] = function(v) {
            // getter
            if(!arguments.length) return opts[name];

            // setter - for multi-part properties,
            // set only the parts that are provided
            opts[name] = Lib.isPlainObject(opts[name]) ?
                 Lib.extendFlat(opts[name], v) :
                 v;

            return component;
        };
    });

    // or use .options to set multiple options at once via a dictionary
    component.options = function(o) {
        Object.keys(o).forEach(function(name) {
            // in case something random comes through
            // that's not an option, ignore it
            if(typeof component[name] === 'function') {
                component[name](o[name]);
            }
        });
        return component;
    };

    component._opts = opts;

    return component;
};

},{"../../constants/alignment":330,"../../lib":353,"../../lib/extend":344,"../../lib/setcursor":371,"../../lib/svg_text_utils":375,"../../plotly":391,"../../plots/cartesian/axes":396,"../../plots/cartesian/axis_defaults":398,"../../plots/cartesian/layout_attributes":407,"../../plots/cartesian/position_defaults":410,"../../plots/plots":429,"../../registry":436,"../color":233,"../dragelement":254,"../drawing":257,"../titles":323,"./attributes":234,"d3":62,"tinycolor2":200}],237:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


module.exports = function hasColorbar(container) {
    return Lib.isPlainObject(container.colorbar);
};

},{"../../lib":353}],238:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    zauto: {
        valType: 'boolean',
        
        dflt: true,
        editType: 'calc',
        impliedEdits: {zmin: undefined, zmax: undefined},
        
    },
    zmin: {
        valType: 'number',
        
        dflt: null,
        editType: 'plot',
        impliedEdits: {zauto: false},
        
    },
    zmax: {
        valType: 'number',
        
        dflt: null,
        editType: 'plot',
        impliedEdits: {zauto: false},
        
    },
    colorscale: {
        valType: 'colorscale',
        
        editType: 'calc',
        impliedEdits: {autocolorscale: false},
        
    },
    autocolorscale: {
        valType: 'boolean',
        
        dflt: true,  // gets overrode in 'heatmap' & 'surface' for backwards comp.
        editType: 'calc',
        impliedEdits: {colorscale: undefined},
        
    },
    reversescale: {
        valType: 'boolean',
        
        dflt: false,
        editType: 'calc',
        
    },
    showscale: {
        valType: 'boolean',
        
        dflt: true,
        editType: 'calc',
        
    }
};

},{}],239:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var scales = require('./scales');
var flipScale = require('./flip_scale');


module.exports = function calc(trace, vals, containerStr, cLetter) {
    var container, inputContainer;

    if(containerStr) {
        container = Lib.nestedProperty(trace, containerStr).get();
        inputContainer = Lib.nestedProperty(trace._input, containerStr).get();
    }
    else {
        container = trace;
        inputContainer = trace._input;
    }

    var autoAttr = cLetter + 'auto',
        minAttr = cLetter + 'min',
        maxAttr = cLetter + 'max',
        auto = container[autoAttr],
        min = container[minAttr],
        max = container[maxAttr],
        scl = container.colorscale;

    if(auto !== false || min === undefined) {
        min = Lib.aggNums(Math.min, null, vals);
    }

    if(auto !== false || max === undefined) {
        max = Lib.aggNums(Math.max, null, vals);
    }

    if(min === max) {
        min -= 0.5;
        max += 0.5;
    }

    container[minAttr] = min;
    container[maxAttr] = max;

    inputContainer[minAttr] = min;
    inputContainer[maxAttr] = max;

    /*
     * If auto was explicitly false but min or max was missing,
     * we filled in the missing piece here but later the trace does
     * not look auto.
     * Otherwise make sure the trace still looks auto as far as later
     * changes are concerned.
     */
    inputContainer[autoAttr] = (auto !== false ||
        (min === undefined && max === undefined));

    if(container.autocolorscale) {
        if(min * max < 0) scl = scales.RdBu;
        else if(min >= 0) scl = scales.Reds;
        else scl = scales.Blues;

        // reversescale is handled at the containerOut level
        inputContainer.colorscale = scl;
        if(container.reversescale) scl = flipScale(scl);
        container.colorscale = scl;
    }
};

},{"../../lib":353,"./flip_scale":244,"./scales":251}],240:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorScaleAttributes = require('./attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var palettes = require('./scales.js');

/*
 * Make all the attributes for a regular colorscale:
 *  color, colorscale, cauto, cmin, cmax, autocolorscale, reversescale
 *
 * @param {string} context:
 *   the container this is in (*marker*, *marker.line* etc)
 * @param {optional string} editTypeOverride:
 *   most of these attributes already require a recalc, but the ones that do not
 *   have editType *style* or *plot* unless you override (presumably with *calc*)
 * @param {optional bool} autoColorDflt:
 *   normally autocolorscale.dflt is `true`, but pass `false` to override
 *
 * @return {object} the finished attributes object
 */
module.exports = function makeColorScaleAttributes(context, editTypeOverride, autoColorDflt) {
    var contextHead = context ? (context + '.') : '';

    return {
        color: {
            valType: 'color',
            arrayOk: true,
            
            editType: editTypeOverride || 'style',
            
        },
        colorscale: extendFlat({}, colorScaleAttributes.colorscale, {
            
        }),
        cauto: extendFlat({}, colorScaleAttributes.zauto, {
            impliedEdits: {cmin: undefined, cmax: undefined},
            
        }),
        cmax: extendFlat({}, colorScaleAttributes.zmax, {
            editType: editTypeOverride || colorScaleAttributes.zmax.editType,
            impliedEdits: {cauto: false},
            
        }),
        cmin: extendFlat({}, colorScaleAttributes.zmin, {
            editType: editTypeOverride || colorScaleAttributes.zmin.editType,
            impliedEdits: {cauto: false},
            
        }),
        autocolorscale: extendFlat({}, colorScaleAttributes.autocolorscale, {
            
            dflt: autoColorDflt === false ? autoColorDflt : colorScaleAttributes.autocolorscale.dflt
        }),
        reversescale: extendFlat({}, colorScaleAttributes.reversescale, {
            
        })
    };
};

},{"../../lib/extend":344,"./attributes":238,"./scales.js":251}],241:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scales = require('./scales');


module.exports = scales.RdBu;

},{"./scales":251}],242:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');

var hasColorbar = require('../colorbar/has_colorbar');
var colorbarDefaults = require('../colorbar/defaults');
var isValidScale = require('./is_valid_scale');
var flipScale = require('./flip_scale');


module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce, opts) {
    var prefix = opts.prefix,
        cLetter = opts.cLetter,
        containerStr = prefix.slice(0, prefix.length - 1),
        containerIn = prefix ?
            Lib.nestedProperty(traceIn, containerStr).get() || {} :
            traceIn,
        containerOut = prefix ?
            Lib.nestedProperty(traceOut, containerStr).get() || {} :
            traceOut,
        minIn = containerIn[cLetter + 'min'],
        maxIn = containerIn[cLetter + 'max'],
        sclIn = containerIn.colorscale;

    var validMinMax = isNumeric(minIn) && isNumeric(maxIn) && (minIn < maxIn);
    coerce(prefix + cLetter + 'auto', !validMinMax);
    coerce(prefix + cLetter + 'min');
    coerce(prefix + cLetter + 'max');

    // handles both the trace case (autocolorscale is false by default) and
    // the marker and marker.line case (autocolorscale is true by default)
    var autoColorscaleDftl;
    if(sclIn !== undefined) autoColorscaleDftl = !isValidScale(sclIn);
    coerce(prefix + 'autocolorscale', autoColorscaleDftl);
    var sclOut = coerce(prefix + 'colorscale');

    // reversescale is handled at the containerOut level
    var reverseScale = coerce(prefix + 'reversescale');
    if(reverseScale) containerOut.colorscale = flipScale(sclOut);

    // ... until Scatter.colorbar can handle marker line colorbars
    if(prefix === 'marker.line.') return;

    // handle both the trace case where the dflt is listed in attributes and
    // the marker case where the dflt is determined by hasColorbar
    var showScaleDftl;
    if(prefix) showScaleDftl = hasColorbar(containerIn);
    var showScale = coerce(prefix + 'showscale', showScaleDftl);

    if(showScale) colorbarDefaults(containerIn, containerOut, layout);
};

},{"../../lib":353,"../colorbar/defaults":235,"../colorbar/has_colorbar":237,"./flip_scale":244,"./is_valid_scale":248,"fast-isnumeric":68}],243:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/**
 * Extract colorscale into numeric domain and color range.
 *
 * @param {array} scl colorscale array of arrays
 * @param {number} cmin minimum color value (used to clamp scale)
 * @param {number} cmax maximum color value (used to clamp scale)
 */
module.exports = function extractScale(scl, cmin, cmax) {
    var N = scl.length,
        domain = new Array(N),
        range = new Array(N);

    for(var i = 0; i < N; i++) {
        var si = scl[i];

        domain[i] = cmin + si[0] * (cmax - cmin);
        range[i] = si[1];
    }

    return {
        domain: domain,
        range: range
    };
};

},{}],244:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = function flipScale(scl) {
    var N = scl.length,
        sclNew = new Array(N),
        si;

    for(var i = N - 1, j = 0; i >= 0; i--, j++) {
        si = scl[i];
        sclNew[j] = [1 - si[0], si[1]];
    }

    return sclNew;
};

},{}],245:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scales = require('./scales');
var defaultScale = require('./default_scale');
var isValidScaleArray = require('./is_valid_scale_array');


module.exports = function getScale(scl, dflt) {
    if(!dflt) dflt = defaultScale;
    if(!scl) return dflt;

    function parseScale() {
        try {
            scl = scales[scl] || JSON.parse(scl);
        }
        catch(e) {
            scl = dflt;
        }
    }

    if(typeof scl === 'string') {
        parseScale();
        // occasionally scl is double-JSON encoded...
        if(typeof scl === 'string') parseScale();
    }

    if(!isValidScaleArray(scl)) return dflt;
    return scl;
};

},{"./default_scale":241,"./is_valid_scale_array":249,"./scales":251}],246:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');

var isValidScale = require('./is_valid_scale');


module.exports = function hasColorscale(trace, containerStr) {
    var container = containerStr ?
            Lib.nestedProperty(trace, containerStr).get() || {} :
            trace,
        color = container.color,
        isArrayWithOneNumber = false;

    if(Array.isArray(color)) {
        for(var i = 0; i < color.length; i++) {
            if(isNumeric(color[i])) {
                isArrayWithOneNumber = true;
                break;
            }
        }
    }

    return (
        Lib.isPlainObject(container) && (
            isArrayWithOneNumber ||
            container.showscale === true ||
            (isNumeric(container.cmin) && isNumeric(container.cmax)) ||
            isValidScale(container.colorscale) ||
            Lib.isPlainObject(container.colorbar)
        )
    );
};

},{"../../lib":353,"./is_valid_scale":248,"fast-isnumeric":68}],247:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.scales = require('./scales');

exports.defaultScale = require('./default_scale');

exports.attributes = require('./attributes');

exports.handleDefaults = require('./defaults');

exports.calc = require('./calc');

exports.hasColorscale = require('./has_colorscale');

exports.isValidScale = require('./is_valid_scale');

exports.getScale = require('./get_scale');

exports.flipScale = require('./flip_scale');

exports.extractScale = require('./extract_scale');

exports.makeColorScaleFunc = require('./make_color_scale_func');

},{"./attributes":238,"./calc":239,"./default_scale":241,"./defaults":242,"./extract_scale":243,"./flip_scale":244,"./get_scale":245,"./has_colorscale":246,"./is_valid_scale":248,"./make_color_scale_func":250,"./scales":251}],248:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scales = require('./scales');
var isValidScaleArray = require('./is_valid_scale_array');


module.exports = function isValidScale(scl) {
    if(scales[scl] !== undefined) return true;
    else return isValidScaleArray(scl);
};

},{"./is_valid_scale_array":249,"./scales":251}],249:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');


module.exports = function isValidScaleArray(scl) {
    var highestVal = 0;

    if(!Array.isArray(scl) || scl.length < 2) return false;

    if(!scl[0] || !scl[scl.length - 1]) return false;

    if(+scl[0][0] !== 0 || +scl[scl.length - 1][0] !== 1) return false;

    for(var i = 0; i < scl.length; i++) {
        var si = scl[i];

        if(si.length !== 2 || +si[0] < highestVal || !tinycolor(si[1]).isValid()) {
            return false;
        }

        highestVal = +si[0];
    }

    return true;
};

},{"tinycolor2":200}],250:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');
var isNumeric = require('fast-isnumeric');

var Color = require('../color');

/**
 * General colorscale function generator.
 *
 * @param {object} specs output of Colorscale.extractScale or precomputed domain, range.
 *  - domain {array}
 *  - range {array}
 *
 * @param {object} opts
 *  - noNumericCheck {boolean} if true, scale func bypasses numeric checks
 *  - returnArray {boolean} if true, scale func return 4-item array instead of color strings
 *
 * @return {function}
 */
module.exports = function makeColorScaleFunc(specs, opts) {
    opts = opts || {};

    var domain = specs.domain,
        range = specs.range,
        N = range.length,
        _range = new Array(N);

    for(var i = 0; i < N; i++) {
        var rgba = tinycolor(range[i]).toRgb();
        _range[i] = [rgba.r, rgba.g, rgba.b, rgba.a];
    }

    var _sclFunc = d3.scale.linear()
        .domain(domain)
        .range(_range)
        .clamp(true);

    var noNumericCheck = opts.noNumericCheck,
        returnArray = opts.returnArray,
        sclFunc;

    if(noNumericCheck && returnArray) {
        sclFunc = _sclFunc;
    }
    else if(noNumericCheck) {
        sclFunc = function(v) {
            return colorArray2rbga(_sclFunc(v));
        };
    }
    else if(returnArray) {
        sclFunc = function(v) {
            if(isNumeric(v)) return _sclFunc(v);
            else if(tinycolor(v).isValid()) return v;
            else return Color.defaultLine;
        };
    }
    else {
        sclFunc = function(v) {
            if(isNumeric(v)) return colorArray2rbga(_sclFunc(v));
            else if(tinycolor(v).isValid()) return v;
            else return Color.defaultLine;
        };
    }

    // colorbar draw looks into the d3 scale closure for domain and range

    sclFunc.domain = _sclFunc.domain;

    sclFunc.range = function() { return range; };

    return sclFunc;
};

function colorArray2rbga(colorArray) {
    var colorObj = {
        r: colorArray[0],
        g: colorArray[1],
        b: colorArray[2],
        a: colorArray[3]
    };

    return tinycolor(colorObj).toRgbString();
}

},{"../color":233,"d3":62,"fast-isnumeric":68,"tinycolor2":200}],251:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    'Greys': [
        [0, 'rgb(0,0,0)'], [1, 'rgb(255,255,255)']
    ],

    'YlGnBu': [
        [0, 'rgb(8,29,88)'], [0.125, 'rgb(37,52,148)'],
        [0.25, 'rgb(34,94,168)'], [0.375, 'rgb(29,145,192)'],
        [0.5, 'rgb(65,182,196)'], [0.625, 'rgb(127,205,187)'],
        [0.75, 'rgb(199,233,180)'], [0.875, 'rgb(237,248,217)'],
        [1, 'rgb(255,255,217)']
    ],

    'Greens': [
        [0, 'rgb(0,68,27)'], [0.125, 'rgb(0,109,44)'],
        [0.25, 'rgb(35,139,69)'], [0.375, 'rgb(65,171,93)'],
        [0.5, 'rgb(116,196,118)'], [0.625, 'rgb(161,217,155)'],
        [0.75, 'rgb(199,233,192)'], [0.875, 'rgb(229,245,224)'],
        [1, 'rgb(247,252,245)']
    ],

    'YlOrRd': [
        [0, 'rgb(128,0,38)'], [0.125, 'rgb(189,0,38)'],
        [0.25, 'rgb(227,26,28)'], [0.375, 'rgb(252,78,42)'],
        [0.5, 'rgb(253,141,60)'], [0.625, 'rgb(254,178,76)'],
        [0.75, 'rgb(254,217,118)'], [0.875, 'rgb(255,237,160)'],
        [1, 'rgb(255,255,204)']
    ],

    'Bluered': [
        [0, 'rgb(0,0,255)'], [1, 'rgb(255,0,0)']
    ],

    // modified RdBu based on
    // www.sandia.gov/~kmorel/documents/ColorMaps/ColorMapsExpanded.pdf
    'RdBu': [
        [0, 'rgb(5,10,172)'], [0.35, 'rgb(106,137,247)'],
        [0.5, 'rgb(190,190,190)'], [0.6, 'rgb(220,170,132)'],
        [0.7, 'rgb(230,145,90)'], [1, 'rgb(178,10,28)']
    ],

    // Scale for non-negative numeric values
    'Reds': [
        [0, 'rgb(220,220,220)'], [0.2, 'rgb(245,195,157)'],
        [0.4, 'rgb(245,160,105)'], [1, 'rgb(178,10,28)']
    ],

    // Scale for non-positive numeric values
    'Blues': [
        [0, 'rgb(5,10,172)'], [0.35, 'rgb(40,60,190)'],
        [0.5, 'rgb(70,100,245)'], [0.6, 'rgb(90,120,245)'],
        [0.7, 'rgb(106,137,247)'], [1, 'rgb(220,220,220)']
    ],

    'Picnic': [
        [0, 'rgb(0,0,255)'], [0.1, 'rgb(51,153,255)'],
        [0.2, 'rgb(102,204,255)'], [0.3, 'rgb(153,204,255)'],
        [0.4, 'rgb(204,204,255)'], [0.5, 'rgb(255,255,255)'],
        [0.6, 'rgb(255,204,255)'], [0.7, 'rgb(255,153,255)'],
        [0.8, 'rgb(255,102,204)'], [0.9, 'rgb(255,102,102)'],
        [1, 'rgb(255,0,0)']
    ],

    'Rainbow': [
        [0, 'rgb(150,0,90)'], [0.125, 'rgb(0,0,200)'],
        [0.25, 'rgb(0,25,255)'], [0.375, 'rgb(0,152,255)'],
        [0.5, 'rgb(44,255,150)'], [0.625, 'rgb(151,255,0)'],
        [0.75, 'rgb(255,234,0)'], [0.875, 'rgb(255,111,0)'],
        [1, 'rgb(255,0,0)']
    ],

    'Portland': [
        [0, 'rgb(12,51,131)'], [0.25, 'rgb(10,136,186)'],
        [0.5, 'rgb(242,211,56)'], [0.75, 'rgb(242,143,56)'],
        [1, 'rgb(217,30,30)']
    ],

    'Jet': [
        [0, 'rgb(0,0,131)'], [0.125, 'rgb(0,60,170)'],
        [0.375, 'rgb(5,255,255)'], [0.625, 'rgb(255,255,0)'],
        [0.875, 'rgb(250,0,0)'], [1, 'rgb(128,0,0)']
    ],

    'Hot': [
        [0, 'rgb(0,0,0)'], [0.3, 'rgb(230,0,0)'],
        [0.6, 'rgb(255,210,0)'], [1, 'rgb(255,255,255)']
    ],

    'Blackbody': [
        [0, 'rgb(0,0,0)'], [0.2, 'rgb(230,0,0)'],
        [0.4, 'rgb(230,210,0)'], [0.7, 'rgb(255,255,255)'],
        [1, 'rgb(160,200,255)']
    ],

    'Earth': [
        [0, 'rgb(0,0,130)'], [0.1, 'rgb(0,180,180)'],
        [0.2, 'rgb(40,210,40)'], [0.4, 'rgb(230,230,50)'],
        [0.6, 'rgb(120,70,20)'], [1, 'rgb(255,255,255)']
    ],

    'Electric': [
        [0, 'rgb(0,0,0)'], [0.15, 'rgb(30,0,100)'],
        [0.4, 'rgb(120,0,100)'], [0.6, 'rgb(160,90,0)'],
        [0.8, 'rgb(230,200,0)'], [1, 'rgb(255,250,220)']
    ],

    'Viridis': [
        [0, '#440154'], [0.06274509803921569, '#48186a'],
        [0.12549019607843137, '#472d7b'], [0.18823529411764706, '#424086'],
        [0.25098039215686274, '#3b528b'], [0.3137254901960784, '#33638d'],
        [0.3764705882352941, '#2c728e'], [0.4392156862745098, '#26828e'],
        [0.5019607843137255, '#21918c'], [0.5647058823529412, '#1fa088'],
        [0.6274509803921569, '#28ae80'], [0.6901960784313725, '#3fbc73'],
        [0.7529411764705882, '#5ec962'], [0.8156862745098039, '#84d44b'],
        [0.8784313725490196, '#addc30'], [0.9411764705882353, '#d8e219'],
        [1, '#fde725']
    ]
};

},{}],252:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


// for automatic alignment on dragging, <1/3 means left align,
// >2/3 means right, and between is center. Pick the right fraction
// based on where you are, and return the fraction corresponding to
// that position on the object
module.exports = function align(v, dv, v0, v1, anchor) {
    var vmin = (v - v0) / (v1 - v0),
        vmax = vmin + dv / (v1 - v0),
        vc = (vmin + vmax) / 2;

    // explicitly specified anchor
    if(anchor === 'left' || anchor === 'bottom') return vmin;
    if(anchor === 'center' || anchor === 'middle') return vc;
    if(anchor === 'right' || anchor === 'top') return vmax;

    // automatic based on position
    if(vmin < (2 / 3) - vc) return vmin;
    if(vmax > (4 / 3) - vc) return vmax;
    return vc;
};

},{}],253:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


// set cursors pointing toward the closest corner/side,
// to indicate alignment
// x and y are 0-1, fractions of the plot area
var cursorset = [
    ['sw-resize', 's-resize', 'se-resize'],
    ['w-resize', 'move', 'e-resize'],
    ['nw-resize', 'n-resize', 'ne-resize']
];

module.exports = function getCursor(x, y, xanchor, yanchor) {
    if(xanchor === 'left') x = 0;
    else if(xanchor === 'center') x = 1;
    else if(xanchor === 'right') x = 2;
    else x = Lib.constrain(Math.floor(x * 3), 0, 2);

    if(yanchor === 'bottom') y = 0;
    else if(yanchor === 'middle') y = 1;
    else if(yanchor === 'top') y = 2;
    else y = Lib.constrain(Math.floor(y * 3), 0, 2);

    return cursorset[y][x];
};

},{"../../lib":353}],254:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var mouseOffset = require('mouse-event-offset');
var hasHover = require('has-hover');

var Plotly = require('../../plotly');
var Lib = require('../../lib');

var constants = require('../../plots/cartesian/constants');
var interactConstants = require('../../constants/interactions');

var dragElement = module.exports = {};

dragElement.align = require('./align');
dragElement.getCursor = require('./cursor');

var unhover = require('./unhover');
dragElement.unhover = unhover.wrapped;
dragElement.unhoverRaw = unhover.raw;

/**
 * Abstracts click & drag interactions
 *
 * During the interaction, a "coverSlip" element - a transparent
 * div covering the whole page - is created, which has two key effects:
 * - Lets you drag beyond the boundaries of the plot itself without
 *   dropping (but if you drag all the way out of the browser window the
 *   interaction will end)
 * - Freezes the cursor: whatever mouse cursor the drag element had when the
 *   interaction started gets copied to the coverSlip for use until mouseup
 *
 * @param {object} options with keys:
 *      element (required) the DOM element to drag
 *      prepFn (optional) function(event, startX, startY)
 *          executed on mousedown
 *          startX and startY are the clientX and clientY pixel position
 *          of the mousedown event
 *      moveFn (optional) function(dx, dy, dragged)
 *          executed on move
 *          dx and dy are the net pixel offset of the drag,
 *          dragged is true/false, has the mouse moved enough to
 *          constitute a drag
 *      doneFn (optional) function(dragged, numClicks, e)
 *          executed on mouseup, or mouseout of window since
 *          we don't get events after that
 *          dragged is as in moveFn
 *          numClicks is how many clicks we've registered within
 *          a doubleclick time
 *          e is the original event
 */
dragElement.init = function init(options) {
    var gd = options.gd;
    var numClicks = 1;
    var DBLCLICKDELAY = interactConstants.DBLCLICKDELAY;
    var element = options.element;

    var startX,
        startY,
        newMouseDownTime,
        cursor,
        dragCover,
        initialTarget;

    if(!gd._mouseDownTime) gd._mouseDownTime = 0;

    element.style.pointerEvents = 'all';

    element.onmousedown = onStart;
    element.ontouchstart = onStart;

    function onStart(e) {
        if(e.buttons && e.buttons === 2) {    // right click
            return;
        }

        // make dragging and dragged into properties of gd
        // so that others can look at and modify them
        gd._dragged = false;
        gd._dragging = true;
        var offset = pointerOffset(e);
        startX = offset[0];
        startY = offset[1];
        initialTarget = e.target;

        newMouseDownTime = (new Date()).getTime();
        if(newMouseDownTime - gd._mouseDownTime < DBLCLICKDELAY) {
            // in a click train
            numClicks += 1;
        }
        else {
            // new click train
            numClicks = 1;
            gd._mouseDownTime = newMouseDownTime;
        }

        if(options.prepFn) options.prepFn(e, startX, startY);

        if(hasHover) {
            dragCover = coverSlip();
            dragCover.style.cursor = window.getComputedStyle(element).cursor;
        }
        else {
            // document acts as a dragcover for mobile, bc we can't create dragcover dynamically
            dragCover = document;
            cursor = window.getComputedStyle(document.documentElement).cursor;
            document.documentElement.style.cursor = window.getComputedStyle(element).cursor;
        }

        document.addEventListener('mousemove', onMove);
        document.addEventListener('mouseup', onDone);
        document.addEventListener('touchmove', onMove);
        document.addEventListener('touchend', onDone);

        return Lib.pauseEvent(e);
    }

    function onMove(e) {
        var offset = pointerOffset(e);
        var dx = offset[0] - startX;
        var dy = offset[1] - startY;
        var minDrag = options.minDrag || constants.MINDRAG;

        if(Math.abs(dx) < minDrag) dx = 0;
        if(Math.abs(dy) < minDrag) dy = 0;
        if(dx || dy) {
            gd._dragged = true;
            dragElement.unhover(gd);
        }

        if(options.moveFn) options.moveFn(dx, dy, gd._dragged);

        return Lib.pauseEvent(e);
    }

    function onDone(e) {
        document.removeEventListener('mousemove', onMove);
        document.removeEventListener('mouseup', onDone);
        document.removeEventListener('touchmove', onMove);
        document.removeEventListener('touchend', onDone);

        if(hasHover) {
            Lib.removeElement(dragCover);
        }
        else if(cursor) {
            dragCover.documentElement.style.cursor = cursor;
            cursor = null;
        }

        if(!gd._dragging) {
            gd._dragged = false;
            return;
        }
        gd._dragging = false;

        // don't count as a dblClick unless the mouseUp is also within
        // the dblclick delay
        if((new Date()).getTime() - gd._mouseDownTime > DBLCLICKDELAY) {
            numClicks = Math.max(numClicks - 1, 1);
        }

        if(options.doneFn) options.doneFn(gd._dragged, numClicks, e);

        if(!gd._dragged) {
            var e2;

            try {
                e2 = new MouseEvent('click', e);
            }
            catch(err) {
                var offset = pointerOffset(e);
                e2 = document.createEvent('MouseEvents');
                e2.initMouseEvent('click',
                    e.bubbles, e.cancelable,
                    e.view, e.detail,
                    e.screenX, e.screenY,
                    offset[0], offset[1],
                    e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
                    e.button, e.relatedTarget);
            }

            initialTarget.dispatchEvent(e2);
        }

        finishDrag(gd);

        gd._dragged = false;

        return Lib.pauseEvent(e);
    }
};

function coverSlip() {
    var cover = document.createElement('div');

    cover.className = 'dragcover';
    var cStyle = cover.style;
    cStyle.position = 'fixed';
    cStyle.left = 0;
    cStyle.right = 0;
    cStyle.top = 0;
    cStyle.bottom = 0;
    cStyle.zIndex = 999999999;
    cStyle.background = 'none';

    document.body.appendChild(cover);

    return cover;
}

dragElement.coverSlip = coverSlip;

function finishDrag(gd) {
    gd._dragging = false;
    if(gd._replotPending) Plotly.plot(gd);
}

function pointerOffset(e) {
    return mouseOffset(
        e.changedTouches ? e.changedTouches[0] : e,
        document.body
    );
}

},{"../../constants/interactions":333,"../../lib":353,"../../plotly":391,"../../plots/cartesian/constants":401,"./align":252,"./cursor":253,"./unhover":255,"has-hover":149,"mouse-event-offset":158}],255:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


var Events = require('../../lib/events');
var throttle = require('../../lib/throttle');
var getGraphDiv = require('../../lib/get_graph_div');

var hoverConstants = require('../fx/constants');

var unhover = module.exports = {};


unhover.wrapped = function(gd, evt, subplot) {
    gd = getGraphDiv(gd);

    // Important, clear any queued hovers
    throttle.clear(gd._fullLayout._uid + hoverConstants.HOVERID);

    unhover.raw(gd, evt, subplot);
};


// remove hover effects on mouse out, and emit unhover event
unhover.raw = function unhoverRaw(gd, evt) {
    var fullLayout = gd._fullLayout;
    var oldhoverdata = gd._hoverdata;

    if(!evt) evt = {};
    if(evt.target &&
       Events.triggerHandler(gd, 'plotly_beforehover', evt) === false) {
        return;
    }

    fullLayout._hoverlayer.selectAll('g').remove();
    fullLayout._hoverlayer.selectAll('line').remove();
    fullLayout._hoverlayer.selectAll('circle').remove();
    gd._hoverdata = undefined;

    if(evt.target && oldhoverdata) {
        gd.emit('plotly_unhover', {
            event: evt,
            points: oldhoverdata
        });
    }
};

},{"../../lib/events":343,"../../lib/get_graph_div":348,"../../lib/throttle":376,"../fx/constants":269}],256:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.dash = {
    valType: 'string',
    // string type usually doesn't take values... this one should really be
    // a special type or at least a special coercion function, from the GUI
    // you only get these values but elsewhere the user can supply a list of
    // dash lengths in px, and it will be honored
    values: ['solid', 'dot', 'dash', 'longdash', 'dashdot', 'longdashdot'],
    dflt: 'solid',
    
    editType: 'style',
    
};

},{}],257:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');
var tinycolor = require('tinycolor2');

var Registry = require('../../registry');
var Color = require('../color');
var Colorscale = require('../colorscale');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');

var xmlnsNamespaces = require('../../constants/xmlns_namespaces');
var alignment = require('../../constants/alignment');
var LINE_SPACING = alignment.LINE_SPACING;

var subTypes = require('../../traces/scatter/subtypes');
var makeBubbleSizeFn = require('../../traces/scatter/make_bubble_size_func');

var drawing = module.exports = {};

// -----------------------------------------------------
// styling functions for plot elements
// -----------------------------------------------------

drawing.font = function(s, family, size, color) {
    // also allow the form font(s, {family, size, color})
    if(Lib.isPlainObject(family)) {
        color = family.color;
        size = family.size;
        family = family.family;
    }
    if(family) s.style('font-family', family);
    if(size + 1) s.style('font-size', size + 'px');
    if(color) s.call(Color.fill, color);
};

/*
 * Positioning helpers
 * Note: do not use `setPosition` with <text> nodes modified by
 * `svgTextUtils.convertToTspans`. Use `svgTextUtils.positionText`
 * instead, so that <tspan.line> elements get updated to match.
 */
drawing.setPosition = function(s, x, y) { s.attr('x', x).attr('y', y); };
drawing.setSize = function(s, w, h) { s.attr('width', w).attr('height', h); };
drawing.setRect = function(s, x, y, w, h) {
    s.call(drawing.setPosition, x, y).call(drawing.setSize, w, h);
};

/** Translate node
 *
 * @param {object} d : calcdata point item
 * @param {sel} sel : d3 selction of node to translate
 * @param {object} xa : corresponding full xaxis object
 * @param {object} ya : corresponding full yaxis object
 *
 * @return {boolean} :
 *  true if selection got translated
 *  false if selection could not get translated
 */
drawing.translatePoint = function(d, sel, xa, ya) {
    var x = xa.c2p(d.x);
    var y = ya.c2p(d.y);

    if(isNumeric(x) && isNumeric(y) && sel.node()) {
        // for multiline text this works better
        if(sel.node().nodeName === 'text') {
            sel.attr('x', x).attr('y', y);
        } else {
            sel.attr('transform', 'translate(' + x + ',' + y + ')');
        }
    } else {
        return false;
    }

    return true;
};

drawing.translatePoints = function(s, xa, ya) {
    s.each(function(d) {
        var sel = d3.select(this);
        drawing.translatePoint(d, sel, xa, ya);
    });
};

drawing.hideOutsideRangePoint = function(d, sel, xa, ya) {
    sel.attr(
        'display',
        xa.isPtWithinRange(d) && ya.isPtWithinRange(d) ? null : 'none'
    );
};

drawing.hideOutsideRangePoints = function(points, subplot) {
    if(!subplot._hasClipOnAxisFalse) return;

    var xa = subplot.xaxis;
    var ya = subplot.yaxis;

    points.each(function(d) {
        drawing.hideOutsideRangePoint(d, d3.select(this), xa, ya);
    });
};

drawing.crispRound = function(gd, lineWidth, dflt) {
    // for lines that disable antialiasing we want to
    // make sure the width is an integer, and at least 1 if it's nonzero

    if(!lineWidth || !isNumeric(lineWidth)) return dflt || 0;

    // but not for static plots - these don't get antialiased anyway.
    if(gd._context.staticPlot) return lineWidth;

    if(lineWidth < 1) return 1;
    return Math.round(lineWidth);
};

drawing.singleLineStyle = function(d, s, lw, lc, ld) {
    s.style('fill', 'none');
    var line = (((d || [])[0] || {}).trace || {}).line || {},
        lw1 = lw || line.width||0,
        dash = ld || line.dash || '';

    Color.stroke(s, lc || line.color);
    drawing.dashLine(s, dash, lw1);
};

drawing.lineGroupStyle = function(s, lw, lc, ld) {
    s.style('fill', 'none')
    .each(function(d) {
        var line = (((d || [])[0] || {}).trace || {}).line || {},
            lw1 = lw || line.width||0,
            dash = ld || line.dash || '';

        d3.select(this)
            .call(Color.stroke, lc || line.color)
            .call(drawing.dashLine, dash, lw1);
    });
};

drawing.dashLine = function(s, dash, lineWidth) {
    lineWidth = +lineWidth || 0;

    dash = drawing.dashStyle(dash, lineWidth);

    s.style({
        'stroke-dasharray': dash,
        'stroke-width': lineWidth + 'px'
    });
};

drawing.dashStyle = function(dash, lineWidth) {
    lineWidth = +lineWidth || 1;
    var dlw = Math.max(lineWidth, 3);

    if(dash === 'solid') dash = '';
    else if(dash === 'dot') dash = dlw + 'px,' + dlw + 'px';
    else if(dash === 'dash') dash = (3 * dlw) + 'px,' + (3 * dlw) + 'px';
    else if(dash === 'longdash') dash = (5 * dlw) + 'px,' + (5 * dlw) + 'px';
    else if(dash === 'dashdot') {
        dash = (3 * dlw) + 'px,' + dlw + 'px,' + dlw + 'px,' + dlw + 'px';
    }
    else if(dash === 'longdashdot') {
        dash = (5 * dlw) + 'px,' + (2 * dlw) + 'px,' + dlw + 'px,' + (2 * dlw) + 'px';
    }
    // otherwise user wrote the dasharray themselves - leave it be

    return dash;
};

// Same as fillGroupStyle, except in this case the selection may be a transition
drawing.singleFillStyle = function(sel) {
    var node = d3.select(sel.node());
    var data = node.data();
    var fillcolor = (((data[0] || [])[0] || {}).trace || {}).fillcolor;
    if(fillcolor) {
        sel.call(Color.fill, fillcolor);
    }
};

drawing.fillGroupStyle = function(s) {
    s.style('stroke-width', 0)
    .each(function(d) {
        var shape = d3.select(this);
        try {
            shape.call(Color.fill, d[0].trace.fillcolor);
        }
        catch(e) {
            Lib.error(e, s);
            shape.remove();
        }
    });
};

var SYMBOLDEFS = require('./symbol_defs');

drawing.symbolNames = [];
drawing.symbolFuncs = [];
drawing.symbolNeedLines = {};
drawing.symbolNoDot = {};
drawing.symbolList = [];

Object.keys(SYMBOLDEFS).forEach(function(k) {
    var symDef = SYMBOLDEFS[k];
    drawing.symbolList = drawing.symbolList.concat(
        [symDef.n, k, symDef.n + 100, k + '-open']);
    drawing.symbolNames[symDef.n] = k;
    drawing.symbolFuncs[symDef.n] = symDef.f;
    if(symDef.needLine) {
        drawing.symbolNeedLines[symDef.n] = true;
    }
    if(symDef.noDot) {
        drawing.symbolNoDot[symDef.n] = true;
    }
    else {
        drawing.symbolList = drawing.symbolList.concat(
            [symDef.n + 200, k + '-dot', symDef.n + 300, k + '-open-dot']);
    }
});
var MAXSYMBOL = drawing.symbolNames.length,
    // add a dot in the middle of the symbol
    DOTPATH = 'M0,0.5L0.5,0L0,-0.5L-0.5,0Z';

drawing.symbolNumber = function(v) {
    if(typeof v === 'string') {
        var vbase = 0;
        if(v.indexOf('-open') > 0) {
            vbase = 100;
            v = v.replace('-open', '');
        }
        if(v.indexOf('-dot') > 0) {
            vbase += 200;
            v = v.replace('-dot', '');
        }
        v = drawing.symbolNames.indexOf(v);
        if(v >= 0) { v += vbase; }
    }
    if((v % 100 >= MAXSYMBOL) || v >= 400) { return 0; }
    return Math.floor(Math.max(v, 0));
};

function singlePointStyle(d, sel, trace, markerScale, lineScale, marker, markerLine, gd) {
    // only scatter & box plots get marker path and opacity
    // bars, histograms don't
    if(Registry.traceIs(trace, 'symbols')) {
        var sizeFn = makeBubbleSizeFn(trace);

        sel.attr('d', function(d) {
            var r;

            // handle multi-trace graph edit case
            if(d.ms === 'various' || marker.size === 'various') r = 3;
            else {
                r = subTypes.isBubble(trace) ?
                        sizeFn(d.ms) : (marker.size || 6) / 2;
            }

            // store the calculated size so hover can use it
            d.mrc = r;

            // turn the symbol into a sanitized number
            var x = drawing.symbolNumber(d.mx || marker.symbol) || 0,
                xBase = x % 100;

            // save if this marker is open
            // because that impacts how to handle colors
            d.om = x % 200 >= 100;

            return drawing.symbolFuncs[xBase](r) +
                (x >= 200 ? DOTPATH : '');
        })
        .style('opacity', function(d) {
            return (d.mo + 1 || marker.opacity + 1) - 1;
        });
    }

    var perPointGradient = false;

    // 'so' is suspected outliers, for box plots
    var fillColor,
        lineColor,
        lineWidth;
    if(d.so) {
        lineWidth = markerLine.outlierwidth;
        lineColor = markerLine.outliercolor;
        fillColor = marker.outliercolor;
    }
    else {
        lineWidth = (d.mlw + 1 || markerLine.width + 1 ||
            // TODO: we need the latter for legends... can we get rid of it?
            (d.trace ? d.trace.marker.line.width : 0) + 1) - 1;

        if('mlc' in d) lineColor = d.mlcc = lineScale(d.mlc);
        // weird case: array wasn't long enough to apply to every point
        else if(Array.isArray(markerLine.color)) lineColor = Color.defaultLine;
        else lineColor = markerLine.color;

        if(Array.isArray(marker.color)) {
            fillColor = Color.defaultLine;
            perPointGradient = true;
        }

        if('mc' in d) fillColor = d.mcc = markerScale(d.mc);
        else fillColor = marker.color || 'rgba(0,0,0,0)';
    }

    if(d.om) {
        // open markers can't have zero linewidth, default to 1px,
        // and use fill color as stroke color
        sel.call(Color.stroke, fillColor)
            .style({
                'stroke-width': (lineWidth || 1) + 'px',
                fill: 'none'
            });
    }
    else {
        sel.style('stroke-width', lineWidth + 'px');

        var markerGradient = marker.gradient;

        var gradientType = d.mgt;
        if(gradientType) perPointGradient = true;
        else gradientType = markerGradient && markerGradient.type;

        if(gradientType && gradientType !== 'none') {
            var gradientColor = d.mgc;
            if(gradientColor) perPointGradient = true;
            else gradientColor = markerGradient.color;

            var gradientID = 'g' + gd._fullLayout._uid + '-' + trace.uid;
            if(perPointGradient) gradientID += '-' + d.i;

            sel.call(drawing.gradient, gd, gradientID, gradientType, fillColor, gradientColor);
        }
        else {
            sel.call(Color.fill, fillColor);
        }

        if(lineWidth) {
            sel.call(Color.stroke, lineColor);
        }
    }
}

var HORZGRADIENT = {x1: 1, x2: 0, y1: 0, y2: 0};
var VERTGRADIENT = {x1: 0, x2: 0, y1: 1, y2: 0};

drawing.gradient = function(sel, gd, gradientID, type, color1, color2) {
    var gradient = gd._fullLayout._defs.select('.gradients')
        .selectAll('#' + gradientID)
        .data([type + color1 + color2], Lib.identity);

    gradient.exit().remove();

    gradient.enter()
        .append(type === 'radial' ? 'radialGradient' : 'linearGradient')
        .each(function() {
            var el = d3.select(this);
            if(type === 'horizontal') el.attr(HORZGRADIENT);
            else if(type === 'vertical') el.attr(VERTGRADIENT);

            el.attr('id', gradientID);

            var tc1 = tinycolor(color1);
            var tc2 = tinycolor(color2);

            el.append('stop').attr({
                offset: '0%',
                'stop-color': Color.tinyRGB(tc2),
                'stop-opacity': tc2.getAlpha()
            });

            el.append('stop').attr({
                offset: '100%',
                'stop-color': Color.tinyRGB(tc1),
                'stop-opacity': tc1.getAlpha()
            });
        });

    sel.style({
        fill: 'url(#' + gradientID + ')',
        'fill-opacity': null
    });
};

/*
 * Make the gradients container and clear out any previous gradients.
 * We never collect all the gradients we need in one place,
 * so we can't ever remove gradients that have stopped being useful,
 * except all at once before a full redraw.
 * The upside of this is arbitrary points can share gradient defs
 */
drawing.initGradients = function(gd) {
    var gradientsGroup = gd._fullLayout._defs.selectAll('.gradients').data([0]);
    gradientsGroup.enter().append('g').classed('gradients', true);

    gradientsGroup.selectAll('linearGradient,radialGradient').remove();
};

drawing.singlePointStyle = function(d, sel, trace, markerScale, lineScale, gd) {
    var marker = trace.marker;

    singlePointStyle(d, sel, trace, markerScale, lineScale, marker, marker.line, gd);

};

drawing.pointStyle = function(s, trace, gd) {
    if(!s.size()) return;

    // allow array marker and marker line colors to be
    // scaled by given max and min to colorscales
    var marker = trace.marker;
    var markerScale = drawing.tryColorscale(marker, '');
    var lineScale = drawing.tryColorscale(marker, 'line');

    s.each(function(d) {
        drawing.singlePointStyle(d, d3.select(this), trace, markerScale, lineScale, gd);
    });
};

drawing.tryColorscale = function(marker, prefix) {
    var cont = prefix ? Lib.nestedProperty(marker, prefix).get() : marker,
        scl = cont.colorscale,
        colorArray = cont.color;

    if(scl && Array.isArray(colorArray)) {
        return Colorscale.makeColorScaleFunc(
            Colorscale.extractScale(scl, cont.cmin, cont.cmax)
        );
    }
    else return Lib.identity;
};

// draw text at points
var TEXTOFFSETSIGN = {start: 1, end: -1, middle: 0, bottom: 1, top: -1};
drawing.textPointStyle = function(s, trace, gd) {
    s.each(function(d) {
        var p = d3.select(this);
        var text = Lib.extractOption(d, trace, 'tx', 'text');

        if(!text) {
            p.remove();
            return;
        }

        var pos = d.tp || trace.textposition,
            v = pos.indexOf('top') !== -1 ? 'top' :
                pos.indexOf('bottom') !== -1 ? 'bottom' : 'middle',
            h = pos.indexOf('left') !== -1 ? 'end' :
                pos.indexOf('right') !== -1 ? 'start' : 'middle',
            fontSize = d.ts || trace.textfont.size,
            // if markers are shown, offset a little more than
            // the nominal marker size
            // ie 2/1.6 * nominal, bcs some markers are a bit bigger
            r = d.mrc ? (d.mrc / 0.8 + 1) : 0;

        fontSize = (isNumeric(fontSize) && fontSize > 0) ? fontSize : 0;

        p.call(drawing.font,
                d.tf || trace.textfont.family,
                fontSize,
                d.tc || trace.textfont.color)
            .attr('text-anchor', h)
            .text(text)
            .call(svgTextUtils.convertToTspans, gd);

        var pgroup = d3.select(this.parentNode);
        var numLines = (svgTextUtils.lineCount(p) - 1) * LINE_SPACING + 1;
        var dx = TEXTOFFSETSIGN[h] * r;
        var dy = fontSize * 0.75 + TEXTOFFSETSIGN[v] * r +
                (TEXTOFFSETSIGN[v] - 1) * numLines * fontSize / 2;

        // fix the overall text group position
        pgroup.attr('transform', 'translate(' + dx + ',' + dy + ')');
    });
};

// generalized Catmull-Rom splines, per
// http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
var CatmullRomExp = 0.5;
drawing.smoothopen = function(pts, smoothness) {
    if(pts.length < 3) { return 'M' + pts.join('L');}
    var path = 'M' + pts[0],
        tangents = [], i;
    for(i = 1; i < pts.length - 1; i++) {
        tangents.push(makeTangent(pts[i - 1], pts[i], pts[i + 1], smoothness));
    }
    path += 'Q' + tangents[0][0] + ' ' + pts[1];
    for(i = 2; i < pts.length - 1; i++) {
        path += 'C' + tangents[i - 2][1] + ' ' + tangents[i - 1][0] + ' ' + pts[i];
    }
    path += 'Q' + tangents[pts.length - 3][1] + ' ' + pts[pts.length - 1];
    return path;
};

drawing.smoothclosed = function(pts, smoothness) {
    if(pts.length < 3) { return 'M' + pts.join('L') + 'Z'; }
    var path = 'M' + pts[0],
        pLast = pts.length - 1,
        tangents = [makeTangent(pts[pLast],
                        pts[0], pts[1], smoothness)],
        i;
    for(i = 1; i < pLast; i++) {
        tangents.push(makeTangent(pts[i - 1], pts[i], pts[i + 1], smoothness));
    }
    tangents.push(
        makeTangent(pts[pLast - 1], pts[pLast], pts[0], smoothness)
    );

    for(i = 1; i <= pLast; i++) {
        path += 'C' + tangents[i - 1][1] + ' ' + tangents[i][0] + ' ' + pts[i];
    }
    path += 'C' + tangents[pLast][1] + ' ' + tangents[0][0] + ' ' + pts[0] + 'Z';
    return path;
};

function makeTangent(prevpt, thispt, nextpt, smoothness) {
    var d1x = prevpt[0] - thispt[0],
        d1y = prevpt[1] - thispt[1],
        d2x = nextpt[0] - thispt[0],
        d2y = nextpt[1] - thispt[1],
        d1a = Math.pow(d1x * d1x + d1y * d1y, CatmullRomExp / 2),
        d2a = Math.pow(d2x * d2x + d2y * d2y, CatmullRomExp / 2),
        numx = (d2a * d2a * d1x - d1a * d1a * d2x) * smoothness,
        numy = (d2a * d2a * d1y - d1a * d1a * d2y) * smoothness,
        denom1 = 3 * d2a * (d1a + d2a),
        denom2 = 3 * d1a * (d1a + d2a);
    return [
        [
            d3.round(thispt[0] + (denom1 && numx / denom1), 2),
            d3.round(thispt[1] + (denom1 && numy / denom1), 2)
        ], [
            d3.round(thispt[0] - (denom2 && numx / denom2), 2),
            d3.round(thispt[1] - (denom2 && numy / denom2), 2)
        ]
    ];
}

// step paths - returns a generator function for paths
// with the given step shape
var STEPPATH = {
    hv: function(p0, p1) {
        return 'H' + d3.round(p1[0], 2) + 'V' + d3.round(p1[1], 2);
    },
    vh: function(p0, p1) {
        return 'V' + d3.round(p1[1], 2) + 'H' + d3.round(p1[0], 2);
    },
    hvh: function(p0, p1) {
        return 'H' + d3.round((p0[0] + p1[0]) / 2, 2) + 'V' +
            d3.round(p1[1], 2) + 'H' + d3.round(p1[0], 2);
    },
    vhv: function(p0, p1) {
        return 'V' + d3.round((p0[1] + p1[1]) / 2, 2) + 'H' +
            d3.round(p1[0], 2) + 'V' + d3.round(p1[1], 2);
    }
};
var STEPLINEAR = function(p0, p1) {
    return 'L' + d3.round(p1[0], 2) + ',' + d3.round(p1[1], 2);
};
drawing.steps = function(shape) {
    var onestep = STEPPATH[shape] || STEPLINEAR;
    return function(pts) {
        var path = 'M' + d3.round(pts[0][0], 2) + ',' + d3.round(pts[0][1], 2);
        for(var i = 1; i < pts.length; i++) {
            path += onestep(pts[i - 1], pts[i]);
        }
        return path;
    };
};

// off-screen svg render testing element, shared by the whole page
// uses the id 'js-plotly-tester' and stores it in drawing.tester
drawing.makeTester = function() {
    var tester = d3.select('body')
        .selectAll('#js-plotly-tester')
        .data([0]);

    tester.enter().append('svg')
        .attr('id', 'js-plotly-tester')
        .attr(xmlnsNamespaces.svgAttrs)
        .style({
            position: 'absolute',
            left: '-10000px',
            top: '-10000px',
            width: '9000px',
            height: '9000px',
            'z-index': '1'
        });

    // browsers differ on how they describe the bounding rect of
    // the svg if its contents spill over... so make a 1x1px
    // reference point we can measure off of.
    var testref = tester.selectAll('.js-reference-point').data([0]);
    testref.enter().append('path')
        .classed('js-reference-point', true)
        .attr('d', 'M0,0H1V1H0Z')
        .style({
            'stroke-width': 0,
            fill: 'black'
        });

    drawing.tester = tester;
    drawing.testref = testref;
};

/*
 * use our offscreen tester to get a clientRect for an element,
 * in a reference frame where it isn't translated (or transformed) and
 * its anchor point is at (0,0)
 * always returns a copy of the bbox, so the caller can modify it safely
 *
 * @param {SVGElement} node: the element to measure. If possible this should be
 *   a <text> or MathJax <g> element that's already passed through
 *   `convertToTspans` because in that case we can cache the results, but it's
 *   possible to pass in any svg element.
 *
 * @param {boolean} inTester: is this element already in `drawing.tester`?
 *   If you are measuring a dummy element, rather than one you really intend
 *   to use on the plot, making it in `drawing.tester` in the first place
 *   allows us to test faster because it cuts out cloning and appending it.
 *
 * @param {string} hash: for internal use only, if we already know the cache key
 *   for this element beforehand.
 *
 * @return {object}: a plain object containing the width, height, left, right,
 *   top, and bottom of `node`
 */
drawing.savedBBoxes = {};
var savedBBoxesCount = 0;
var maxSavedBBoxes = 10000;

drawing.bBox = function(node, inTester, hash) {
    /*
     * Cache elements we've already measured so we don't have to
     * remeasure the same thing many times
     * We have a few bBox callers though who pass a node larger than
     * a <text> or a MathJax <g>, such as an axis group containing many labels.
     * These will not generate a hash (unless we figure out an appropriate
     * hash key for them) and thus we will not hash them.
     */
    if(!hash) hash = nodeHash(node);
    var out;
    if(hash) {
        out = drawing.savedBBoxes[hash];
        if(out) return Lib.extendFlat({}, out);
    }
    else if(node.childNodes.length === 1) {
        /*
         * If we have only one child element, which is itself hashable, make
         * a new hash from this element plus its x,y,transform
         * These bounding boxes *include* x,y,transform - mostly for use by
         * callers trying to avoid overlaps (ie titles)
         */
        var innerNode = node.childNodes[0];

        hash = nodeHash(innerNode);
        if(hash) {
            var x = +innerNode.getAttribute('x') || 0;
            var y = +innerNode.getAttribute('y') || 0;
            var transform = innerNode.getAttribute('transform');

            if(!transform) {
                // in this case, just varying x and y, don't bother caching
                // the final bBox because the alteration is quick.
                var innerBB = drawing.bBox(innerNode, false, hash);
                if(x) {
                    innerBB.left += x;
                    innerBB.right += x;
                }
                if(y) {
                    innerBB.top += y;
                    innerBB.bottom += y;
                }
                return innerBB;
            }
            /*
             * else we have a transform - rather than make a complicated
             * (and error-prone and probably slow) transform parser/calculator,
             * just continue on calculating the boundingClientRect of the group
             * and use the new composite hash to cache it.
             * That said, `innerNode.transform.baseVal` is an array of
             * `SVGTransform` objects, that *do* seem to have a nice matrix
             * multiplication interface that we could use to avoid making
             * another getBoundingClientRect call...
             */
            hash += '~' + x + '~' + y + '~' + transform;

            out = drawing.savedBBoxes[hash];
            if(out) return Lib.extendFlat({}, out);
        }
    }
    var testNode, tester;
    if(inTester) {
        testNode = node;
    }
    else {
        tester = drawing.tester.node();

        // copy the node to test into the tester
        testNode = node.cloneNode(true);
        tester.appendChild(testNode);
    }

    // standardize its position (and newline tspans if any)
    d3.select(testNode)
        .attr('transform', null)
        .call(svgTextUtils.positionText, 0, 0);

    var testRect = testNode.getBoundingClientRect();
    var refRect = drawing.testref
        .node()
        .getBoundingClientRect();

    if(!inTester) tester.removeChild(testNode);

    var bb = {
        height: testRect.height,
        width: testRect.width,
        left: testRect.left - refRect.left,
        top: testRect.top - refRect.top,
        right: testRect.right - refRect.left,
        bottom: testRect.bottom - refRect.top
    };

    // make sure we don't have too many saved boxes,
    // or a long session could overload on memory
    // by saving boxes for long-gone elements
    if(savedBBoxesCount >= maxSavedBBoxes) {
        drawing.savedBBoxes = {};
        savedBBoxesCount = 0;
    }

    // cache this bbox
    if(hash) drawing.savedBBoxes[hash] = bb;
    savedBBoxesCount++;

    return Lib.extendFlat({}, bb);
};

// capture everything about a node (at least in our usage) that
// impacts its bounding box, given that bBox clears x, y, and transform
function nodeHash(node) {
    var inputText = node.getAttribute('data-unformatted');
    if(inputText === null) return;
    return inputText +
        node.getAttribute('data-math') +
        node.getAttribute('text-anchor') +
        node.getAttribute('style');
}

/*
 * make a robust clipPath url from a local id
 * note! We'd better not be exporting from a page
 * with a <base> or the svg will not be portable!
 */
drawing.setClipUrl = function(s, localId) {
    if(!localId) {
        s.attr('clip-path', null);
        return;
    }

    var url = '#' + localId,
        base = d3.select('base');

    // add id to location href w/o hashes if any)
    if(base.size() && base.attr('href')) {
        url = window.location.href.split('#')[0] + url;
    }

    s.attr('clip-path', 'url(' + url + ')');
};

drawing.getTranslate = function(element) {
    // Note the separator [^\d] between x and y in this regex
    // We generally use ',' but IE will convert it to ' '
    var re = /.*\btranslate\((-?\d*\.?\d*)[^-\d]*(-?\d*\.?\d*)[^\d].*/,
        getter = element.attr ? 'attr' : 'getAttribute',
        transform = element[getter]('transform') || '';

    var translate = transform.replace(re, function(match, p1, p2) {
        return [p1, p2].join(' ');
    })
    .split(' ');

    return {
        x: +translate[0] || 0,
        y: +translate[1] || 0
    };
};

drawing.setTranslate = function(element, x, y) {

    var re = /(\btranslate\(.*?\);?)/,
        getter = element.attr ? 'attr' : 'getAttribute',
        setter = element.attr ? 'attr' : 'setAttribute',
        transform = element[getter]('transform') || '';

    x = x || 0;
    y = y || 0;

    transform = transform.replace(re, '').trim();
    transform += ' translate(' + x + ', ' + y + ')';
    transform = transform.trim();

    element[setter]('transform', transform);

    return transform;
};

drawing.getScale = function(element) {

    var re = /.*\bscale\((\d*\.?\d*)[^\d]*(\d*\.?\d*)[^\d].*/,
        getter = element.attr ? 'attr' : 'getAttribute',
        transform = element[getter]('transform') || '';

    var translate = transform.replace(re, function(match, p1, p2) {
        return [p1, p2].join(' ');
    })
    .split(' ');

    return {
        x: +translate[0] || 1,
        y: +translate[1] || 1
    };
};

drawing.setScale = function(element, x, y) {

    var re = /(\bscale\(.*?\);?)/,
        getter = element.attr ? 'attr' : 'getAttribute',
        setter = element.attr ? 'attr' : 'setAttribute',
        transform = element[getter]('transform') || '';

    x = x || 1;
    y = y || 1;

    transform = transform.replace(re, '').trim();
    transform += ' scale(' + x + ', ' + y + ')';
    transform = transform.trim();

    element[setter]('transform', transform);

    return transform;
};

drawing.setPointGroupScale = function(selection, x, y) {
    var t, scale, re;

    x = x || 1;
    y = y || 1;

    if(x === 1 && y === 1) {
        scale = '';
    } else {
        // The same scale transform for every point:
        scale = ' scale(' + x + ',' + y + ')';
    }

    // A regex to strip any existing scale:
    re = /\s*sc.*/;

    selection.each(function() {
        // Get the transform:
        t = (this.getAttribute('transform') || '').replace(re, '');
        t += scale;
        t = t.trim();

        // Append the scale transform
        this.setAttribute('transform', t);
    });

    return scale;
};

var TEXT_POINT_LAST_TRANSLATION_RE = /translate\([^)]*\)\s*$/;

drawing.setTextPointsScale = function(selection, xScale, yScale) {
    selection.each(function() {
        var transforms;
        var el = d3.select(this);
        var text = el.select('text');

        if(!text.node()) return;

        var x = parseFloat(text.attr('x') || 0);
        var y = parseFloat(text.attr('y') || 0);

        var existingTransform = (el.attr('transform') || '').match(TEXT_POINT_LAST_TRANSLATION_RE);

        if(xScale === 1 && yScale === 1) {
            transforms = [];
        } else {
            transforms = [
                'translate(' + x + ',' + y + ')',
                'scale(' + xScale + ',' + yScale + ')',
                'translate(' + (-x) + ',' + (-y) + ')',
            ];
        }

        if(existingTransform) {
            transforms.push(existingTransform);
        }

        el.attr('transform', transforms.join(' '));
    });
};

},{"../../constants/alignment":330,"../../constants/xmlns_namespaces":336,"../../lib":353,"../../lib/svg_text_utils":375,"../../registry":436,"../../traces/scatter/make_bubble_size_func":507,"../../traces/scatter/subtypes":512,"../color":233,"../colorscale":247,"./symbol_defs":258,"d3":62,"fast-isnumeric":68,"tinycolor2":200}],258:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

/** Marker symbol definitions
 * users can specify markers either by number or name
 * add 100 (or '-open') and you get an open marker
 *  open markers have no fill and use line color as the stroke color
 * add 200 (or '-dot') and you get a dot in the middle
 * add both and you get both
 */

module.exports = {
    circle: {
        n: 0,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',0A' + rs + ',' + rs + ' 0 1,1 0,-' + rs +
                'A' + rs + ',' + rs + ' 0 0,1 ' + rs + ',0Z';
        }
    },
    square: {
        n: 1,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'H-' + rs + 'V-' + rs + 'H' + rs + 'Z';
        }
    },
    diamond: {
        n: 2,
        f: function(r) {
            var rd = d3.round(r * 1.3, 2);
            return 'M' + rd + ',0L0,' + rd + 'L-' + rd + ',0L0,-' + rd + 'Z';
        }
    },
    cross: {
        n: 3,
        f: function(r) {
            var rc = d3.round(r * 0.4, 2),
                rc2 = d3.round(r * 1.2, 2);
            return 'M' + rc2 + ',' + rc + 'H' + rc + 'V' + rc2 + 'H-' + rc +
                'V' + rc + 'H-' + rc2 + 'V-' + rc + 'H-' + rc + 'V-' + rc2 +
                'H' + rc + 'V-' + rc + 'H' + rc2 + 'Z';
        }
    },
    x: {
        n: 4,
        f: function(r) {
            var rx = d3.round(r * 0.8 / Math.sqrt(2), 2),
                ne = 'l' + rx + ',' + rx,
                se = 'l' + rx + ',-' + rx,
                sw = 'l-' + rx + ',-' + rx,
                nw = 'l-' + rx + ',' + rx;
            return 'M0,' + rx + ne + se + sw + se + sw + nw + sw + nw + ne + nw + ne + 'Z';
        }
    },
    'triangle-up': {
        n: 5,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M-' + rt + ',' + r2 + 'H' + rt + 'L0,-' + rs + 'Z';
        }
    },
    'triangle-down': {
        n: 6,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M-' + rt + ',-' + r2 + 'H' + rt + 'L0,' + rs + 'Z';
        }
    },
    'triangle-left': {
        n: 7,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M' + r2 + ',-' + rt + 'V' + rt + 'L-' + rs + ',0Z';
        }
    },
    'triangle-right': {
        n: 8,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M-' + r2 + ',-' + rt + 'V' + rt + 'L' + rs + ',0Z';
        }
    },
    'triangle-ne': {
        n: 9,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M-' + r2 + ',-' + r1 + 'H' + r1 + 'V' + r2 + 'Z';
        }
    },
    'triangle-se': {
        n: 10,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M' + r1 + ',-' + r2 + 'V' + r1 + 'H-' + r2 + 'Z';
        }
    },
    'triangle-sw': {
        n: 11,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M' + r2 + ',' + r1 + 'H-' + r1 + 'V-' + r2 + 'Z';
        }
    },
    'triangle-nw': {
        n: 12,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M-' + r1 + ',' + r2 + 'V-' + r1 + 'H' + r2 + 'Z';
        }
    },
    pentagon: {
        n: 13,
        f: function(r) {
            var x1 = d3.round(r * 0.951, 2),
                x2 = d3.round(r * 0.588, 2),
                y0 = d3.round(-r, 2),
                y1 = d3.round(r * -0.309, 2),
                y2 = d3.round(r * 0.809, 2);
            return 'M' + x1 + ',' + y1 + 'L' + x2 + ',' + y2 + 'H-' + x2 +
                'L-' + x1 + ',' + y1 + 'L0,' + y0 + 'Z';
        }
    },
    hexagon: {
        n: 14,
        f: function(r) {
            var y0 = d3.round(r, 2),
                y1 = d3.round(r / 2, 2),
                x = d3.round(r * Math.sqrt(3) / 2, 2);
            return 'M' + x + ',-' + y1 + 'V' + y1 + 'L0,' + y0 +
                'L-' + x + ',' + y1 + 'V-' + y1 + 'L0,-' + y0 + 'Z';
        }
    },
    hexagon2: {
        n: 15,
        f: function(r) {
            var x0 = d3.round(r, 2),
                x1 = d3.round(r / 2, 2),
                y = d3.round(r * Math.sqrt(3) / 2, 2);
            return 'M-' + x1 + ',' + y + 'H' + x1 + 'L' + x0 +
                ',0L' + x1 + ',-' + y + 'H-' + x1 + 'L-' + x0 + ',0Z';
        }
    },
    octagon: {
        n: 16,
        f: function(r) {
            var a = d3.round(r * 0.924, 2),
                b = d3.round(r * 0.383, 2);
            return 'M-' + b + ',-' + a + 'H' + b + 'L' + a + ',-' + b + 'V' + b +
                'L' + b + ',' + a + 'H-' + b + 'L-' + a + ',' + b + 'V-' + b + 'Z';
        }
    },
    star: {
        n: 17,
        f: function(r) {
            var rs = r * 1.4,
                x1 = d3.round(rs * 0.225, 2),
                x2 = d3.round(rs * 0.951, 2),
                x3 = d3.round(rs * 0.363, 2),
                x4 = d3.round(rs * 0.588, 2),
                y0 = d3.round(-rs, 2),
                y1 = d3.round(rs * -0.309, 2),
                y3 = d3.round(rs * 0.118, 2),
                y4 = d3.round(rs * 0.809, 2),
                y5 = d3.round(rs * 0.382, 2);
            return 'M' + x1 + ',' + y1 + 'H' + x2 + 'L' + x3 + ',' + y3 +
                'L' + x4 + ',' + y4 + 'L0,' + y5 + 'L-' + x4 + ',' + y4 +
                'L-' + x3 + ',' + y3 + 'L-' + x2 + ',' + y1 + 'H-' + x1 +
                'L0,' + y0 + 'Z';
        }
    },
    hexagram: {
        n: 18,
        f: function(r) {
            var y = d3.round(r * 0.66, 2),
                x1 = d3.round(r * 0.38, 2),
                x2 = d3.round(r * 0.76, 2);
            return 'M-' + x2 + ',0l-' + x1 + ',-' + y + 'h' + x2 +
                'l' + x1 + ',-' + y + 'l' + x1 + ',' + y + 'h' + x2 +
                'l-' + x1 + ',' + y + 'l' + x1 + ',' + y + 'h-' + x2 +
                'l-' + x1 + ',' + y + 'l-' + x1 + ',-' + y + 'h-' + x2 + 'Z';
        }
    },
    'star-triangle-up': {
        n: 19,
        f: function(r) {
            var x = d3.round(r * Math.sqrt(3) * 0.8, 2),
                y1 = d3.round(r * 0.8, 2),
                y2 = d3.round(r * 1.6, 2),
                rc = d3.round(r * 4, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M-' + x + ',' + y1 + aPart + x + ',' + y1 +
                aPart + '0,-' + y2 + aPart + '-' + x + ',' + y1 + 'Z';
        }
    },
    'star-triangle-down': {
        n: 20,
        f: function(r) {
            var x = d3.round(r * Math.sqrt(3) * 0.8, 2),
                y1 = d3.round(r * 0.8, 2),
                y2 = d3.round(r * 1.6, 2),
                rc = d3.round(r * 4, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M' + x + ',-' + y1 + aPart + '-' + x + ',-' + y1 +
                aPart + '0,' + y2 + aPart + x + ',-' + y1 + 'Z';
        }
    },
    'star-square': {
        n: 21,
        f: function(r) {
            var rp = d3.round(r * 1.1, 2),
                rc = d3.round(r * 2, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M-' + rp + ',-' + rp + aPart + '-' + rp + ',' + rp +
                aPart + rp + ',' + rp + aPart + rp + ',-' + rp +
                aPart + '-' + rp + ',-' + rp + 'Z';
        }
    },
    'star-diamond': {
        n: 22,
        f: function(r) {
            var rp = d3.round(r * 1.4, 2),
                rc = d3.round(r * 1.9, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M-' + rp + ',0' + aPart + '0,' + rp +
                aPart + rp + ',0' + aPart + '0,-' + rp +
                aPart + '-' + rp + ',0' + 'Z';
        }
    },
    'diamond-tall': {
        n: 23,
        f: function(r) {
            var x = d3.round(r * 0.7, 2),
                y = d3.round(r * 1.4, 2);
            return 'M0,' + y + 'L' + x + ',0L0,-' + y + 'L-' + x + ',0Z';
        }
    },
    'diamond-wide': {
        n: 24,
        f: function(r) {
            var x = d3.round(r * 1.4, 2),
                y = d3.round(r * 0.7, 2);
            return 'M0,' + y + 'L' + x + ',0L0,-' + y + 'L-' + x + ',0Z';
        }
    },
    hourglass: {
        n: 25,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'H-' + rs + 'L' + rs + ',-' + rs + 'H-' + rs + 'Z';
        },
        noDot: true
    },
    bowtie: {
        n: 26,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'V-' + rs + 'L-' + rs + ',' + rs + 'V-' + rs + 'Z';
        },
        noDot: true
    },
    'circle-cross': {
        n: 27,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M0,' + rs + 'V-' + rs + 'M' + rs + ',0H-' + rs +
                'M' + rs + ',0A' + rs + ',' + rs + ' 0 1,1 0,-' + rs +
                'A' + rs + ',' + rs + ' 0 0,1 ' + rs + ',0Z';
        },
        needLine: true,
        noDot: true
    },
    'circle-x': {
        n: 28,
        f: function(r) {
            var rs = d3.round(r, 2),
                rc = d3.round(r / Math.sqrt(2), 2);
            return 'M' + rc + ',' + rc + 'L-' + rc + ',-' + rc +
                'M' + rc + ',-' + rc + 'L-' + rc + ',' + rc +
                'M' + rs + ',0A' + rs + ',' + rs + ' 0 1,1 0,-' + rs +
                'A' + rs + ',' + rs + ' 0 0,1 ' + rs + ',0Z';
        },
        needLine: true,
        noDot: true
    },
    'square-cross': {
        n: 29,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M0,' + rs + 'V-' + rs + 'M' + rs + ',0H-' + rs +
                'M' + rs + ',' + rs + 'H-' + rs + 'V-' + rs + 'H' + rs + 'Z';
        },
        needLine: true,
        noDot: true
    },
    'square-x': {
        n: 30,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'L-' + rs + ',-' + rs +
                'M' + rs + ',-' + rs + 'L-' + rs + ',' + rs +
                'M' + rs + ',' + rs + 'H-' + rs + 'V-' + rs + 'H' + rs + 'Z';
        },
        needLine: true,
        noDot: true
    },
    'diamond-cross': {
        n: 31,
        f: function(r) {
            var rd = d3.round(r * 1.3, 2);
            return 'M' + rd + ',0L0,' + rd + 'L-' + rd + ',0L0,-' + rd + 'Z' +
                'M0,-' + rd + 'V' + rd + 'M-' + rd + ',0H' + rd;
        },
        needLine: true,
        noDot: true
    },
    'diamond-x': {
        n: 32,
        f: function(r) {
            var rd = d3.round(r * 1.3, 2),
                r2 = d3.round(r * 0.65, 2);
            return 'M' + rd + ',0L0,' + rd + 'L-' + rd + ',0L0,-' + rd + 'Z' +
                'M-' + r2 + ',-' + r2 + 'L' + r2 + ',' + r2 +
                'M-' + r2 + ',' + r2 + 'L' + r2 + ',-' + r2;
        },
        needLine: true,
        noDot: true
    },
    'cross-thin': {
        n: 33,
        f: function(r) {
            var rc = d3.round(r * 1.4, 2);
            return 'M0,' + rc + 'V-' + rc + 'M' + rc + ',0H-' + rc;
        },
        needLine: true,
        noDot: true
    },
    'x-thin': {
        n: 34,
        f: function(r) {
            var rx = d3.round(r, 2);
            return 'M' + rx + ',' + rx + 'L-' + rx + ',-' + rx +
                'M' + rx + ',-' + rx + 'L-' + rx + ',' + rx;
        },
        needLine: true,
        noDot: true
    },
    asterisk: {
        n: 35,
        f: function(r) {
            var rc = d3.round(r * 1.2, 2);
            var rs = d3.round(r * 0.85, 2);
            return 'M0,' + rc + 'V-' + rc + 'M' + rc + ',0H-' + rc +
                'M' + rs + ',' + rs + 'L-' + rs + ',-' + rs +
                'M' + rs + ',-' + rs + 'L-' + rs + ',' + rs;
        },
        needLine: true,
        noDot: true
    },
    hash: {
        n: 36,
        f: function(r) {
            var r1 = d3.round(r / 2, 2),
                r2 = d3.round(r, 2);
            return 'M' + r1 + ',' + r2 + 'V-' + r2 +
                'm-' + r2 + ',0V' + r2 +
                'M' + r2 + ',' + r1 + 'H-' + r2 +
                'm0,-' + r2 + 'H' + r2;
        },
        needLine: true
    },
    'y-up': {
        n: 37,
        f: function(r) {
            var x = d3.round(r * 1.2, 2),
                y0 = d3.round(r * 1.6, 2),
                y1 = d3.round(r * 0.8, 2);
            return 'M-' + x + ',' + y1 + 'L0,0M' + x + ',' + y1 + 'L0,0M0,-' + y0 + 'L0,0';
        },
        needLine: true,
        noDot: true
    },
    'y-down': {
        n: 38,
        f: function(r) {
            var x = d3.round(r * 1.2, 2),
                y0 = d3.round(r * 1.6, 2),
                y1 = d3.round(r * 0.8, 2);
            return 'M-' + x + ',-' + y1 + 'L0,0M' + x + ',-' + y1 + 'L0,0M0,' + y0 + 'L0,0';
        },
        needLine: true,
        noDot: true
    },
    'y-left': {
        n: 39,
        f: function(r) {
            var y = d3.round(r * 1.2, 2),
                x0 = d3.round(r * 1.6, 2),
                x1 = d3.round(r * 0.8, 2);
            return 'M' + x1 + ',' + y + 'L0,0M' + x1 + ',-' + y + 'L0,0M-' + x0 + ',0L0,0';
        },
        needLine: true,
        noDot: true
    },
    'y-right': {
        n: 40,
        f: function(r) {
            var y = d3.round(r * 1.2, 2),
                x0 = d3.round(r * 1.6, 2),
                x1 = d3.round(r * 0.8, 2);
            return 'M-' + x1 + ',' + y + 'L0,0M-' + x1 + ',-' + y + 'L0,0M' + x0 + ',0L0,0';
        },
        needLine: true,
        noDot: true
    },
    'line-ew': {
        n: 41,
        f: function(r) {
            var rc = d3.round(r * 1.4, 2);
            return 'M' + rc + ',0H-' + rc;
        },
        needLine: true,
        noDot: true
    },
    'line-ns': {
        n: 42,
        f: function(r) {
            var rc = d3.round(r * 1.4, 2);
            return 'M0,' + rc + 'V-' + rc;
        },
        needLine: true,
        noDot: true
    },
    'line-ne': {
        n: 43,
        f: function(r) {
            var rx = d3.round(r, 2);
            return 'M' + rx + ',-' + rx + 'L-' + rx + ',' + rx;
        },
        needLine: true,
        noDot: true
    },
    'line-nw': {
        n: 44,
        f: function(r) {
            var rx = d3.round(r, 2);
            return 'M' + rx + ',' + rx + 'L-' + rx + ',-' + rx;
        },
        needLine: true,
        noDot: true
    }
};

},{"d3":62}],259:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    visible: {
        valType: 'boolean',
        
        editType: 'calc',
        
    },
    type: {
        valType: 'enumerated',
        values: ['percent', 'constant', 'sqrt', 'data'],
        
        editType: 'calc',
        
    },
    symmetric: {
        valType: 'boolean',
        
        editType: 'calc',
        
    },
    array: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    arrayminus: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    value: {
        valType: 'number',
        min: 0,
        dflt: 10,
        
        editType: 'calc',
        
    },
    valueminus: {
        valType: 'number',
        min: 0,
        dflt: 10,
        
        editType: 'calc',
        
    },
    traceref: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        
        editType: 'style'
    },
    tracerefminus: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        
        editType: 'style'
    },
    copy_ystyle: {
        valType: 'boolean',
        
        editType: 'plot'
    },
    copy_zstyle: {
        valType: 'boolean',
        
        editType: 'style'
    },
    color: {
        valType: 'color',
        
        editType: 'style',
        
    },
    thickness: {
        valType: 'number',
        min: 0,
        dflt: 2,
        
        editType: 'style',
        
    },
    width: {
        valType: 'number',
        min: 0,
        
        editType: 'plot',
        
    },
    editType: 'calc',

    _deprecated: {
        opacity: {
            valType: 'number',
            
            editType: 'style',
            
        }
    }
};

},{}],260:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');

var makeComputeError = require('./compute_error');


module.exports = function calc(gd) {
    var calcdata = gd.calcdata;

    for(var i = 0; i < calcdata.length; i++) {
        var calcTrace = calcdata[i],
            trace = calcTrace[0].trace;

        if(!Registry.traceIs(trace, 'errorBarsOK')) continue;

        var xa = Axes.getFromId(gd, trace.xaxis),
            ya = Axes.getFromId(gd, trace.yaxis);

        calcOneAxis(calcTrace, trace, xa, 'x');
        calcOneAxis(calcTrace, trace, ya, 'y');
    }
};

function calcOneAxis(calcTrace, trace, axis, coord) {
    var opts = trace['error_' + coord] || {},
        isVisible = (opts.visible && ['linear', 'log'].indexOf(axis.type) !== -1),
        vals = [];

    if(!isVisible) return;

    var computeError = makeComputeError(opts);

    for(var i = 0; i < calcTrace.length; i++) {
        var calcPt = calcTrace[i],
            calcCoord = calcPt[coord];

        if(!isNumeric(axis.c2l(calcCoord))) continue;

        var errors = computeError(calcCoord, i);
        if(isNumeric(errors[0]) && isNumeric(errors[1])) {
            var shoe = calcPt[coord + 's'] = calcCoord - errors[0],
                hat = calcPt[coord + 'h'] = calcCoord + errors[1];
            vals.push(shoe, hat);
        }
    }

    Axes.expand(axis, vals, {padded: true});
}

},{"../../plots/cartesian/axes":396,"../../registry":436,"./compute_error":261,"fast-isnumeric":68}],261:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


/**
 * Error bar computing function generator
 *
 * N.B. The generated function does not clean the dataPt entries. Non-numeric
 * entries result in undefined error magnitudes.
 *
 * @param {object} opts error bar attributes
 *
 * @return {function} :
 *      @param {numeric} dataPt data point from where to compute the error magnitude
 *      @param {number} index index of dataPt in its corresponding data array
 *      @return {array}
 *        - error[0] : error magnitude in the negative direction
 *        - error[1] : " " " " positive "
 */
module.exports = function makeComputeError(opts) {
    var type = opts.type,
        symmetric = opts.symmetric;

    if(type === 'data') {
        var array = opts.array,
            arrayminus = opts.arrayminus;

        if(symmetric || arrayminus === undefined) {
            return function computeError(dataPt, index) {
                var val = +(array[index]);
                return [val, val];
            };
        }
        else {
            return function computeError(dataPt, index) {
                return [+arrayminus[index], +array[index]];
            };
        }
    }
    else {
        var computeErrorValue = makeComputeErrorValue(type, opts.value),
            computeErrorValueMinus = makeComputeErrorValue(type, opts.valueminus);

        if(symmetric || opts.valueminus === undefined) {
            return function computeError(dataPt) {
                var val = computeErrorValue(dataPt);
                return [val, val];
            };
        }
        else {
            return function computeError(dataPt) {
                return [
                    computeErrorValueMinus(dataPt),
                    computeErrorValue(dataPt)
                ];
            };
        }
    }
};

/**
 * Compute error bar magnitude (for all types except data)
 *
 * @param {string} type error bar type
 * @param {numeric} value error bar value
 *
 * @return {function} :
 *      @param {numeric} dataPt
 */
function makeComputeErrorValue(type, value) {
    if(type === 'percent') {
        return function(dataPt) {
            return Math.abs(dataPt * value / 100);
        };
    }
    if(type === 'constant') {
        return function() {
            return Math.abs(value);
        };
    }
    if(type === 'sqrt') {
        return function(dataPt) {
            return Math.sqrt(Math.abs(dataPt));
        };
    }
}

},{}],262:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Lib = require('../../lib');

var attributes = require('./attributes');


module.exports = function(traceIn, traceOut, defaultColor, opts) {
    var objName = 'error_' + opts.axis,
        containerOut = traceOut[objName] = {},
        containerIn = traceIn[objName] || {};

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, attributes, attr, dflt);
    }

    var hasErrorBars = (
        containerIn.array !== undefined ||
        containerIn.value !== undefined ||
        containerIn.type === 'sqrt'
    );

    var visible = coerce('visible', hasErrorBars);

    if(visible === false) return;

    var type = coerce('type', 'array' in containerIn ? 'data' : 'percent'),
        symmetric = true;

    if(type !== 'sqrt') {
        symmetric = coerce('symmetric',
            !((type === 'data' ? 'arrayminus' : 'valueminus') in containerIn));
    }

    if(type === 'data') {
        var array = coerce('array');
        if(!array) containerOut.array = [];
        coerce('traceref');
        if(!symmetric) {
            var arrayminus = coerce('arrayminus');
            if(!arrayminus) containerOut.arrayminus = [];
            coerce('tracerefminus');
        }
    }
    else if(type === 'percent' || type === 'constant') {
        coerce('value');
        if(!symmetric) coerce('valueminus');
    }

    var copyAttr = 'copy_' + opts.inherit + 'style';
    if(opts.inherit) {
        var inheritObj = traceOut['error_' + opts.inherit];
        if((inheritObj || {}).visible) {
            coerce(copyAttr, !(containerIn.color ||
                               isNumeric(containerIn.thickness) ||
                               isNumeric(containerIn.width)));
        }
    }
    if(!opts.inherit || !containerOut[copyAttr]) {
        coerce('color', defaultColor);
        coerce('thickness');
        coerce('width', Registry.traceIs(traceOut, 'gl3d') ? 0 : 4);
    }
};

},{"../../lib":353,"../../registry":436,"./attributes":259,"fast-isnumeric":68}],263:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var errorBars = module.exports = {};

errorBars.attributes = require('./attributes');

errorBars.supplyDefaults = require('./defaults');

errorBars.calc = require('./calc');

errorBars.calcFromTrace = function(trace, layout) {
    var x = trace.x || [],
        y = trace.y || [],
        len = x.length || y.length;

    var calcdataMock = new Array(len);

    for(var i = 0; i < len; i++) {
        calcdataMock[i] = {
            x: x[i],
            y: y[i]
        };
    }

    calcdataMock[0].trace = trace;

    errorBars.calc({
        calcdata: [calcdataMock],
        _fullLayout: layout
    });

    return calcdataMock;
};

errorBars.plot = require('./plot');

errorBars.style = require('./style');

errorBars.hoverInfo = function(calcPoint, trace, hoverPoint) {
    if((trace.error_y || {}).visible) {
        hoverPoint.yerr = calcPoint.yh - calcPoint.y;
        if(!trace.error_y.symmetric) hoverPoint.yerrneg = calcPoint.y - calcPoint.ys;
    }
    if((trace.error_x || {}).visible) {
        hoverPoint.xerr = calcPoint.xh - calcPoint.x;
        if(!trace.error_x.symmetric) hoverPoint.xerrneg = calcPoint.x - calcPoint.xs;
    }
};

},{"./attributes":259,"./calc":260,"./defaults":262,"./plot":264,"./style":265}],264:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Drawing = require('../drawing');
var subTypes = require('../../traces/scatter/subtypes');

module.exports = function plot(traces, plotinfo, transitionOpts) {
    var isNew;

    var xa = plotinfo.xaxis;
    var ya = plotinfo.yaxis;

    var hasAnimation = transitionOpts && transitionOpts.duration > 0;

    traces.each(function(d) {
        var trace = d[0].trace,
            // || {} is in case the trace (specifically scatterternary)
            // doesn't support error bars at all, but does go through
            // the scatter.plot mechanics, which calls ErrorBars.plot
            // internally
            xObj = trace.error_x || {},
            yObj = trace.error_y || {};

        var keyFunc;

        if(trace.ids) {
            keyFunc = function(d) {return d.id;};
        }

        var sparse = (
            subTypes.hasMarkers(trace) &&
            trace.marker.maxdisplayed > 0
        );

        if(!yObj.visible && !xObj.visible) d = [];

        var errorbars = d3.select(this).selectAll('g.errorbar')
            .data(d, keyFunc);

        errorbars.exit().remove();

        if(!d.length) return;

        if(!xObj.visible) errorbars.selectAll('path.xerror').remove();
        if(!yObj.visible) errorbars.selectAll('path.yerror').remove();

        errorbars.style('opacity', 1);

        var enter = errorbars.enter().append('g')
            .classed('errorbar', true);

        if(hasAnimation) {
            enter.style('opacity', 0).transition()
                .duration(transitionOpts.duration)
                .style('opacity', 1);
        }

        Drawing.setClipUrl(errorbars, plotinfo.layerClipId);

        errorbars.each(function(d) {
            var errorbar = d3.select(this);
            var coords = errorCoords(d, xa, ya);

            if(sparse && !d.vis) return;

            var path;

            if(yObj.visible && isNumeric(coords.x) &&
                    isNumeric(coords.yh) &&
                    isNumeric(coords.ys)) {
                var yw = yObj.width;

                path = 'M' + (coords.x - yw) + ',' +
                    coords.yh + 'h' + (2 * yw) + // hat
                    'm-' + yw + ',0V' + coords.ys; // bar


                if(!coords.noYS) path += 'm-' + yw + ',0h' + (2 * yw); // shoe

                var yerror = errorbar.select('path.yerror');

                isNew = !yerror.size();

                if(isNew) {
                    yerror = errorbar.append('path')
                        .style('vector-effect', 'non-scaling-stroke')
                        .classed('yerror', true);
                } else if(hasAnimation) {
                    yerror = yerror
                        .transition()
                            .duration(transitionOpts.duration)
                            .ease(transitionOpts.easing);
                }

                yerror.attr('d', path);
            }

            if(xObj.visible && isNumeric(coords.y) &&
                    isNumeric(coords.xh) &&
                    isNumeric(coords.xs)) {
                var xw = (xObj.copy_ystyle ? yObj : xObj).width;

                path = 'M' + coords.xh + ',' +
                    (coords.y - xw) + 'v' + (2 * xw) + // hat
                    'm0,-' + xw + 'H' + coords.xs; // bar

                if(!coords.noXS) path += 'm0,-' + xw + 'v' + (2 * xw); // shoe

                var xerror = errorbar.select('path.xerror');

                isNew = !xerror.size();

                if(isNew) {
                    xerror = errorbar.append('path')
                        .style('vector-effect', 'non-scaling-stroke')
                        .classed('xerror', true);
                } else if(hasAnimation) {
                    xerror = xerror
                        .transition()
                            .duration(transitionOpts.duration)
                            .ease(transitionOpts.easing);
                }

                xerror.attr('d', path);
            }
        });
    });
};

// compute the coordinates of the error-bar objects
function errorCoords(d, xa, ya) {
    var out = {
        x: xa.c2p(d.x),
        y: ya.c2p(d.y)
    };

    // calculate the error bar size and hat and shoe locations
    if(d.yh !== undefined) {
        out.yh = ya.c2p(d.yh);
        out.ys = ya.c2p(d.ys);

        // if the shoes go off-scale (ie log scale, error bars past zero)
        // clip the bar and hide the shoes
        if(!isNumeric(out.ys)) {
            out.noYS = true;
            out.ys = ya.c2p(d.ys, true);
        }
    }

    if(d.xh !== undefined) {
        out.xh = xa.c2p(d.xh);
        out.xs = xa.c2p(d.xs);

        if(!isNumeric(out.xs)) {
            out.noXS = true;
            out.xs = xa.c2p(d.xs, true);
        }
    }

    return out;
}

},{"../../traces/scatter/subtypes":512,"../drawing":257,"d3":62,"fast-isnumeric":68}],265:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Color = require('../color');


module.exports = function style(traces) {
    traces.each(function(d) {
        var trace = d[0].trace,
            yObj = trace.error_y || {},
            xObj = trace.error_x || {};

        var s = d3.select(this);

        s.selectAll('path.yerror')
            .style('stroke-width', yObj.thickness + 'px')
            .call(Color.stroke, yObj.color);

        if(xObj.copy_ystyle) xObj = yObj;

        s.selectAll('path.xerror')
            .style('stroke-width', xObj.thickness + 'px')
            .call(Color.stroke, xObj.color);
    });
};

},{"../color":233,"d3":62}],266:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');

module.exports = {
    hoverlabel: {
        bgcolor: {
            valType: 'color',
            
            arrayOk: true,
            editType: 'none',
            
        },
        bordercolor: {
            valType: 'color',
            
            arrayOk: true,
            editType: 'none',
            
        },
        font: fontAttrs({
            arrayOk: true,
            editType: 'none',
            
        }),
        namelength: {
            valType: 'integer',
            min: -1,
            arrayOk: true,
            
            editType: 'none',
            
        },
        editType: 'calc'
    }
};

},{"../../plots/font_attributes":420}],267:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Registry = require('../../registry');

module.exports = function calc(gd) {
    var calcdata = gd.calcdata;
    var fullLayout = gd._fullLayout;

    function makeCoerceHoverInfo(trace) {
        return function(val) {
            return Lib.coerceHoverinfo({hoverinfo: val}, {_module: trace._module}, fullLayout);
        };
    }

    for(var i = 0; i < calcdata.length; i++) {
        var cd = calcdata[i];
        var trace = cd[0].trace;

        // don't include hover calc fields for pie traces
        // as calcdata items might be sorted by value and
        // won't match the data array order.
        if(Registry.traceIs(trace, 'pie')) continue;

        var fillFn = Registry.traceIs(trace, '2dMap') ? paste : Lib.fillArray;

        fillFn(trace.hoverinfo, cd, 'hi', makeCoerceHoverInfo(trace));

        if(!trace.hoverlabel) continue;

        fillFn(trace.hoverlabel.bgcolor, cd, 'hbg');
        fillFn(trace.hoverlabel.bordercolor, cd, 'hbc');
        fillFn(trace.hoverlabel.font.size, cd, 'hts');
        fillFn(trace.hoverlabel.font.color, cd, 'htc');
        fillFn(trace.hoverlabel.font.family, cd, 'htf');
        fillFn(trace.hoverlabel.namelength, cd, 'hnl');
    }
};

function paste(traceAttr, cd, cdAttr, fn) {
    fn = fn || Lib.identity;

    if(Array.isArray(traceAttr)) {
        cd[0][cdAttr] = fn(traceAttr);
    }
}

},{"../../lib":353,"../../registry":436}],268:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');
var hover = require('./hover').hover;

module.exports = function click(gd, evt, subplot) {
    var annotationsDone = Registry.getComponentMethod('annotations', 'onClick')(gd, gd._hoverdata);

    // fallback to fail-safe in case the plot type's hover method doesn't pass the subplot.
    // Ternary, for example, didn't, but it was caught because tested.
    if(subplot !== undefined) {
        // The true flag at the end causes it to re-run the hover computation to figure out *which*
        // point is being clicked. Without this, clicking is somewhat unreliable.
        hover(gd, evt, subplot, true);
    }

    function emitClick() { gd.emit('plotly_click', {points: gd._hoverdata, event: evt}); }

    if(gd._hoverdata && evt && evt.target) {
        if(annotationsDone && annotationsDone.then) {
            annotationsDone.then(emitClick);
        }
        else emitClick();

        // why do we get a double event without this???
        if(evt.stopImmediatePropagation) evt.stopImmediatePropagation();
    }
};

},{"../../registry":436,"./hover":272}],269:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    // max pixels away from mouse to allow a point to highlight
    MAXDIST: 20,

    // hover labels for multiple horizontal bars get tilted by this angle
    YANGLE: 60,

    // size and display constants for hover text

    // pixel size of hover arrows
    HOVERARROWSIZE: 6,
    // pixels padding around text
    HOVERTEXTPAD: 3,
    // hover font
    HOVERFONTSIZE: 13,
    HOVERFONT: 'Arial, sans-serif',

    // minimum time (msec) between hover calls
    HOVERMINTIME: 50,

    // ID suffix (with fullLayout._uid) for hover events in the throttle cache
    HOVERID: '-hover'
};

},{}],270:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var attributes = require('./attributes');
var handleHoverLabelDefaults = require('./hoverlabel_defaults');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    handleHoverLabelDefaults(traceIn, traceOut, coerce, layout.hoverlabel);
};

},{"../../lib":353,"./attributes":266,"./hoverlabel_defaults":273}],271:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var constants = require('./constants');

// look for either subplot or xaxis and yaxis attributes
exports.getSubplot = function getSubplot(trace) {
    return trace.subplot || (trace.xaxis + trace.yaxis) || trace.geo;
};

// convenience functions for mapping all relevant axes
exports.flat = function flat(subplots, v) {
    var out = new Array(subplots.length);
    for(var i = 0; i < subplots.length; i++) {
        out[i] = v;
    }
    return out;
};

exports.p2c = function p2c(axArray, v) {
    var out = new Array(axArray.length);
    for(var i = 0; i < axArray.length; i++) {
        out[i] = axArray[i].p2c(v);
    }
    return out;
};

exports.getDistanceFunction = function getDistanceFunction(mode, dx, dy, dxy) {
    if(mode === 'closest') return dxy || quadrature(dx, dy);
    return mode === 'x' ? dx : dy;
};

exports.getClosest = function getClosest(cd, distfn, pointData) {
    // do we already have a point number? (array mode only)
    if(pointData.index !== false) {
        if(pointData.index >= 0 && pointData.index < cd.length) {
            pointData.distance = 0;
        }
        else pointData.index = false;
    }
    else {
        // apply the distance function to each data point
        // this is the longest loop... if this bogs down, we may need
        // to create pre-sorted data (by x or y), not sure how to
        // do this for 'closest'
        for(var i = 0; i < cd.length; i++) {
            var newDistance = distfn(cd[i]);
            if(newDistance <= pointData.distance) {
                pointData.index = i;
                pointData.distance = newDistance;
            }
        }
    }
    return pointData;
};

// for bar charts and others with finite-size objects: you must be inside
// it to see its hover info, so distance is infinite outside.
// But make distance inside be at least 1/4 MAXDIST, and a little bigger
// for bigger bars, to prioritize scatter and smaller bars over big bars
//
// note that for closest mode, two inbox's will get added in quadrature
// args are (signed) difference from the two opposite edges
// count one edge as in, so that over continuous ranges you never get a gap
exports.inbox = function inbox(v0, v1) {
    if(v0 * v1 < 0 || v0 === 0) {
        return constants.MAXDIST * (0.6 - 0.3 / Math.max(3, Math.abs(v0 - v1)));
    }
    return Infinity;
};

function quadrature(dx, dy) {
    return function(di) {
        var x = dx(di),
            y = dy(di);
        return Math.sqrt(x * x + y * y);
    };
}

/** Appends values inside array attributes corresponding to given point number
 *
 * @param {object} pointData : point data object (gets mutated here)
 * @param {object} trace : full trace object
 * @param {number} pointNumber : point number
 */
exports.appendArrayPointValue = function(pointData, trace, pointNumber) {
    var arrayAttrs = trace._arrayAttrs;

    if(!arrayAttrs) {
        return;
    }

    for(var i = 0; i < arrayAttrs.length; i++) {
        var astr = arrayAttrs[i];
        var key;

        if(astr === 'ids') key = 'id';
        else if(astr === 'locations') key = 'location';
        else key = astr;

        if(pointData[key] === undefined) {
            var val = Lib.nestedProperty(trace, astr).get();

            if(Array.isArray(pointNumber)) {
                if(Array.isArray(val) && Array.isArray(val[pointNumber[0]])) {
                    pointData[key] = val[pointNumber[0]][pointNumber[1]];
                }
            } else {
                pointData[key] = val[pointNumber];
            }
        }
    }
};

},{"../../lib":353,"./constants":269}],272:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');
var tinycolor = require('tinycolor2');

var Lib = require('../../lib');
var Events = require('../../lib/events');
var svgTextUtils = require('../../lib/svg_text_utils');
var overrideCursor = require('../../lib/override_cursor');
var Drawing = require('../drawing');
var Color = require('../color');
var dragElement = require('../dragelement');
var Axes = require('../../plots/cartesian/axes');
var Registry = require('../../registry');

var helpers = require('./helpers');
var constants = require('./constants');

// hover labels for multiple horizontal bars get tilted by some angle,
// then need to be offset differently if they overlap
var YANGLE = constants.YANGLE;
var YA_RADIANS = Math.PI * YANGLE / 180;

// expansion of projected height
var YFACTOR = 1 / Math.sin(YA_RADIANS);

// to make the appropriate post-rotation x offset,
// you need both x and y offsets
var YSHIFTX = Math.cos(YA_RADIANS);
var YSHIFTY = Math.sin(YA_RADIANS);

// size and display constants for hover text
var HOVERARROWSIZE = constants.HOVERARROWSIZE;
var HOVERTEXTPAD = constants.HOVERTEXTPAD;

// fx.hover: highlight data on hover
// evt can be a mousemove event, or an object with data about what points
//   to hover on
//      {xpx,ypx[,hovermode]} - pixel locations from top left
//          (with optional overriding hovermode)
//      {xval,yval[,hovermode]} - data values
//      [{curveNumber,(pointNumber|xval and/or yval)}] -
//              array of specific points to highlight
//          pointNumber is a single integer if gd.data[curveNumber] is 1D,
//              or a two-element array if it's 2D
//          xval and yval are data values,
//              1D data may specify either or both,
//              2D data must specify both
// subplot is an id string (default "xy")
// makes use of gl.hovermode, which can be:
//      x (find the points with the closest x values, ie a column),
//      closest (find the single closest point)
//    internally there are two more that occasionally get used:
//      y (pick out a row - only used for multiple horizontal bar charts)
//      array (used when the user specifies an explicit
//          array of points to hover on)
//
// We wrap the hovers in a timer, to limit their frequency.
// The actual rendering is done by private function _hover.
exports.hover = function hover(gd, evt, subplot, noHoverEvent) {
    gd = Lib.getGraphDiv(gd);

    Lib.throttle(
        gd._fullLayout._uid + constants.HOVERID,
        constants.HOVERMINTIME,
        function() { _hover(gd, evt, subplot, noHoverEvent); }
    );
};

/*
 * Draw a single hover item in a pre-existing svg container somewhere
 * hoverItem should have keys:
 *    - x and y (or x0, x1, y0, and y1):
 *      the pixel position to mark, relative to opts.container
 *    - xLabel, yLabel, zLabel, text, and name:
 *      info to go in the label
 *    - color:
 *      the background color for the label.
 *    - idealAlign (optional):
 *      'left' or 'right' for which side of the x/y box to try to put this on first
 *    - borderColor (optional):
 *      color for the border, defaults to strongest contrast with color
 *    - fontFamily (optional):
 *      string, the font for this label, defaults to constants.HOVERFONT
 *    - fontSize (optional):
 *      the label font size, defaults to constants.HOVERFONTSIZE
 *    - fontColor (optional):
 *      defaults to borderColor
 * opts should have keys:
 *    - bgColor:
 *      the background color this is against, used if the trace is
 *      non-opaque, and for the name, which goes outside the box
 *    - container:
 *      a <svg> or <g> element to add the hover label to
 *    - outerContainer:
 *      normally a parent of `container`, sets the bounding box to use to
 *      constrain the hover label and determine whether to show it on the left or right
 */
exports.loneHover = function loneHover(hoverItem, opts) {
    var pointData = {
        color: hoverItem.color || Color.defaultLine,
        x0: hoverItem.x0 || hoverItem.x || 0,
        x1: hoverItem.x1 || hoverItem.x || 0,
        y0: hoverItem.y0 || hoverItem.y || 0,
        y1: hoverItem.y1 || hoverItem.y || 0,
        xLabel: hoverItem.xLabel,
        yLabel: hoverItem.yLabel,
        zLabel: hoverItem.zLabel,
        text: hoverItem.text,
        name: hoverItem.name,
        idealAlign: hoverItem.idealAlign,

        // optional extra bits of styling
        borderColor: hoverItem.borderColor,
        fontFamily: hoverItem.fontFamily,
        fontSize: hoverItem.fontSize,
        fontColor: hoverItem.fontColor,

        // filler to make createHoverText happy
        trace: {
            index: 0,
            hoverinfo: ''
        },
        xa: {_offset: 0},
        ya: {_offset: 0},
        index: 0
    };

    var container3 = d3.select(opts.container),
        outerContainer3 = opts.outerContainer ?
            d3.select(opts.outerContainer) : container3;

    var fullOpts = {
        hovermode: 'closest',
        rotateLabels: false,
        bgColor: opts.bgColor || Color.background,
        container: container3,
        outerContainer: outerContainer3
    };

    var hoverLabel = createHoverText([pointData], fullOpts, opts.gd);
    alignHoverText(hoverLabel, fullOpts.rotateLabels);

    return hoverLabel.node();
};

// The actual implementation is here:
function _hover(gd, evt, subplot, noHoverEvent) {
    if((subplot === 'pie' || subplot === 'sankey') && !noHoverEvent) {
        gd.emit('plotly_hover', {
            event: evt.originalEvent,
            points: [evt]
        });
        return;
    }

    if(!subplot) subplot = 'xy';

    // if the user passed in an array of subplots,
    // use those instead of finding overlayed plots
    var subplots = Array.isArray(subplot) ? subplot : [subplot];

    var fullLayout = gd._fullLayout,
        plots = fullLayout._plots || [],
        plotinfo = plots[subplot];

    // list of all overlaid subplots to look at
    if(plotinfo) {
        var overlayedSubplots = plotinfo.overlays.map(function(pi) {
            return pi.id;
        });

        subplots = subplots.concat(overlayedSubplots);
    }

    var len = subplots.length,
        xaArray = new Array(len),
        yaArray = new Array(len);

    for(var i = 0; i < len; i++) {
        var spId = subplots[i];

        // 'cartesian' case
        var plotObj = plots[spId];
        if(plotObj) {

            // TODO make sure that fullLayout_plots axis refs
            // get updated properly so that we don't have
            // to use Axes.getFromId in general.

            xaArray[i] = Axes.getFromId(gd, plotObj.xaxis._id);
            yaArray[i] = Axes.getFromId(gd, plotObj.yaxis._id);
            continue;
        }

        // other subplot types
        var _subplot = fullLayout[spId]._subplot;
        xaArray[i] = _subplot.xaxis;
        yaArray[i] = _subplot.yaxis;
    }

    var hovermode = evt.hovermode || fullLayout.hovermode;

    if(['x', 'y', 'closest'].indexOf(hovermode) === -1 || !gd.calcdata ||
            gd.querySelector('.zoombox') || gd._dragging) {
        return dragElement.unhoverRaw(gd, evt);
    }

        // hoverData: the set of candidate points we've found to highlight
    var hoverData = [],

        // searchData: the data to search in. Mostly this is just a copy of
        // gd.calcdata, filtered to the subplot and overlays we're on
        // but if a point array is supplied it will be a mapping
        // of indicated curves
        searchData = [],

        // [x|y]valArray: the axis values of the hover event
        // mapped onto each of the currently selected overlaid subplots
        xvalArray,
        yvalArray,

        // used in loops
        itemnum,
        curvenum,
        cd,
        trace,
        subplotId,
        subploti,
        mode,
        xval,
        yval,
        pointData,
        closedataPreviousLength;

    // Figure out what we're hovering on:
    // mouse location or user-supplied data

    if(Array.isArray(evt)) {
        // user specified an array of points to highlight
        hovermode = 'array';
        for(itemnum = 0; itemnum < evt.length; itemnum++) {
            cd = gd.calcdata[evt[itemnum].curveNumber||0];
            if(cd[0].trace.hoverinfo !== 'skip') {
                searchData.push(cd);
            }
        }
    }
    else {
        for(curvenum = 0; curvenum < gd.calcdata.length; curvenum++) {
            cd = gd.calcdata[curvenum];
            trace = cd[0].trace;
            if(trace.hoverinfo !== 'skip' && subplots.indexOf(helpers.getSubplot(trace)) !== -1) {
                searchData.push(cd);
            }
        }

        // [x|y]px: the pixels (from top left) of the mouse location
        // on the currently selected plot area
        var hasUserCalledHover = !evt.target,
            xpx, ypx;

        if(hasUserCalledHover) {
            if('xpx' in evt) xpx = evt.xpx;
            else xpx = xaArray[0]._length / 2;

            if('ypx' in evt) ypx = evt.ypx;
            else ypx = yaArray[0]._length / 2;
        }
        else {
            // fire the beforehover event and quit if it returns false
            // note that we're only calling this on real mouse events, so
            // manual calls to fx.hover will always run.
            if(Events.triggerHandler(gd, 'plotly_beforehover', evt) === false) {
                return;
            }

            var dbb = evt.target.getBoundingClientRect();

            xpx = evt.clientX - dbb.left;
            ypx = evt.clientY - dbb.top;

            // in case hover was called from mouseout into hovertext,
            // it's possible you're not actually over the plot anymore
            if(xpx < 0 || xpx > dbb.width || ypx < 0 || ypx > dbb.height) {
                return dragElement.unhoverRaw(gd, evt);
            }
        }

        if('xval' in evt) xvalArray = helpers.flat(subplots, evt.xval);
        else xvalArray = helpers.p2c(xaArray, xpx);

        if('yval' in evt) yvalArray = helpers.flat(subplots, evt.yval);
        else yvalArray = helpers.p2c(yaArray, ypx);

        if(!isNumeric(xvalArray[0]) || !isNumeric(yvalArray[0])) {
            Lib.warn('Fx.hover failed', evt, gd);
            return dragElement.unhoverRaw(gd, evt);
        }
    }

    // the pixel distance to beat as a matching point
    // in 'x' or 'y' mode this resets for each trace
    var distance = Infinity;

    // find the closest point in each trace
    // this is minimum dx and/or dy, depending on mode
    // and the pixel position for the label (labelXpx, labelYpx)
    for(curvenum = 0; curvenum < searchData.length; curvenum++) {
        cd = searchData[curvenum];

        // filter out invisible or broken data
        if(!cd || !cd[0] || !cd[0].trace || cd[0].trace.visible !== true) continue;

        trace = cd[0].trace;

        // Explicitly bail out for these two. I don't know how to otherwise prevent
        // the rest of this function from running and failing
        if(['carpet', 'contourcarpet'].indexOf(trace._module.name) !== -1) continue;

        subplotId = helpers.getSubplot(trace);
        subploti = subplots.indexOf(subplotId);

        // within one trace mode can sometimes be overridden
        mode = hovermode;

        // container for new point, also used to pass info into module.hoverPoints
        pointData = {
            // trace properties
            cd: cd,
            trace: trace,
            xa: xaArray[subploti],
            ya: yaArray[subploti],
            // point properties - override all of these
            index: false, // point index in trace - only used by plotly.js hoverdata consumers
            distance: Math.min(distance, constants.MAXDIST), // pixel distance or pseudo-distance
            color: Color.defaultLine, // trace color
            name: trace.name,
            x0: undefined,
            x1: undefined,
            y0: undefined,
            y1: undefined,
            xLabelVal: undefined,
            yLabelVal: undefined,
            zLabelVal: undefined,
            text: undefined
        };

        // add ref to subplot object (non-cartesian case)
        if(fullLayout[subplotId]) {
            pointData.subplot = fullLayout[subplotId]._subplot;
        }

        closedataPreviousLength = hoverData.length;

        // for a highlighting array, figure out what
        // we're searching for with this element
        if(mode === 'array') {
            var selection = evt[curvenum];
            if('pointNumber' in selection) {
                pointData.index = selection.pointNumber;
                mode = 'closest';
            }
            else {
                mode = '';
                if('xval' in selection) {
                    xval = selection.xval;
                    mode = 'x';
                }
                if('yval' in selection) {
                    yval = selection.yval;
                    mode = mode ? 'closest' : 'y';
                }
            }
        }
        else {
            xval = xvalArray[subploti];
            yval = yvalArray[subploti];
        }

        // Now find the points.
        if(trace._module && trace._module.hoverPoints) {
            var newPoints = trace._module.hoverPoints(pointData, xval, yval, mode);
            if(newPoints) {
                var newPoint;
                for(var newPointNum = 0; newPointNum < newPoints.length; newPointNum++) {
                    newPoint = newPoints[newPointNum];
                    if(isNumeric(newPoint.x0) && isNumeric(newPoint.y0)) {
                        hoverData.push(cleanPoint(newPoint, hovermode));
                    }
                }
            }
        }
        else {
            Lib.log('Unrecognized trace type in hover:', trace);
        }

        // in closest mode, remove any existing (farther) points
        // and don't look any farther than this latest point (or points, if boxes)
        if(hovermode === 'closest' && hoverData.length > closedataPreviousLength) {
            hoverData.splice(0, closedataPreviousLength);
            distance = hoverData[0].distance;
        }
    }

    // nothing left: remove all labels and quit
    if(hoverData.length === 0) return dragElement.unhoverRaw(gd, evt);

    hoverData.sort(function(d1, d2) { return d1.distance - d2.distance; });

    // lastly, emit custom hover/unhover events
    var oldhoverdata = gd._hoverdata,
        newhoverdata = [];

    // pull out just the data that's useful to
    // other people and send it to the event
    for(itemnum = 0; itemnum < hoverData.length; itemnum++) {
        var pt = hoverData[itemnum];

        var out = {
            data: pt.trace._input,
            fullData: pt.trace,
            curveNumber: pt.trace.index,
            pointNumber: pt.index
        };

        if(pt.trace._module.eventData) out = pt.trace._module.eventData(out, pt);
        else {
            out.x = pt.xVal;
            out.y = pt.yVal;
            out.xaxis = pt.xa;
            out.yaxis = pt.ya;

            if(pt.zLabelVal !== undefined) out.z = pt.zLabelVal;
        }

        helpers.appendArrayPointValue(out, pt.trace, pt.index);
        newhoverdata.push(out);
    }

    gd._hoverdata = newhoverdata;

    if(hoverChanged(gd, evt, oldhoverdata) && fullLayout._hasCartesian) {
        var spikelineOpts = {
            hovermode: hovermode,
            fullLayout: fullLayout,
            container: fullLayout._hoverlayer,
            outerContainer: fullLayout._paperdiv
        };
        createSpikelines(hoverData, spikelineOpts);
    }

    // if there's more than one horz bar trace,
    // rotate the labels so they don't overlap
    var rotateLabels = hovermode === 'y' && searchData.length > 1;

    var bgColor = Color.combine(
        fullLayout.plot_bgcolor || Color.background,
        fullLayout.paper_bgcolor
    );

    var labelOpts = {
        hovermode: hovermode,
        rotateLabels: rotateLabels,
        bgColor: bgColor,
        container: fullLayout._hoverlayer,
        outerContainer: fullLayout._paperdiv,
        commonLabelOpts: fullLayout.hoverlabel
    };

    var hoverLabels = createHoverText(hoverData, labelOpts, gd);

    hoverAvoidOverlaps(hoverData, rotateLabels ? 'xa' : 'ya');

    alignHoverText(hoverLabels, rotateLabels);

    // TODO: tagName hack is needed to appease geo.js's hack of using evt.target=true
    // we should improve the "fx" API so other plots can use it without these hack.
    if(evt.target && evt.target.tagName) {
        var hasClickToShow = Registry.getComponentMethod('annotations', 'hasClickToShow')(gd, newhoverdata);
        overrideCursor(d3.select(evt.target), hasClickToShow ? 'pointer' : '');
    }

    // don't emit events if called manually
    if(!evt.target || noHoverEvent || !hoverChanged(gd, evt, oldhoverdata)) return;

    if(oldhoverdata) {
        gd.emit('plotly_unhover', {
            event: evt,
            points: oldhoverdata
        });
    }

    gd.emit('plotly_hover', {
        event: evt,
        points: gd._hoverdata,
        xaxes: xaArray,
        yaxes: yaArray,
        xvals: xvalArray,
        yvals: yvalArray
    });
}

function createHoverText(hoverData, opts, gd) {
    var hovermode = opts.hovermode;
    var rotateLabels = opts.rotateLabels;
    var bgColor = opts.bgColor;
    var container = opts.container;
    var outerContainer = opts.outerContainer;
    var commonLabelOpts = opts.commonLabelOpts || {};

    // opts.fontFamily/Size are used for the common label
    // and as defaults for each hover label, though the individual labels
    // can override this.
    var fontFamily = opts.fontFamily || constants.HOVERFONT;
    var fontSize = opts.fontSize || constants.HOVERFONTSIZE;

    var c0 = hoverData[0];
    var xa = c0.xa;
    var ya = c0.ya;
    var commonAttr = hovermode === 'y' ? 'yLabel' : 'xLabel';
    var t0 = c0[commonAttr];
    var t00 = (String(t0) || '').split(' ')[0];
    var outerContainerBB = outerContainer.node().getBoundingClientRect();
    var outerTop = outerContainerBB.top;
    var outerWidth = outerContainerBB.width;
    var outerHeight = outerContainerBB.height;

    // show the common label, if any, on the axis
    // never show a common label in array mode,
    // even if sometimes there could be one
    var showCommonLabel = c0.distance <= constants.MAXDIST &&
                          (hovermode === 'x' || hovermode === 'y');

    // all hover traces hoverinfo must contain the hovermode
    // to have common labels
    var i, traceHoverinfo;
    for(i = 0; i < hoverData.length; i++) {
        traceHoverinfo = hoverData[i].hoverinfo || hoverData[i].trace.hoverinfo;
        var parts = traceHoverinfo.split('+');
        if(parts.indexOf('all') === -1 &&
            parts.indexOf(hovermode) === -1) {
            showCommonLabel = false;
            break;
        }
    }

    var commonLabel = container.selectAll('g.axistext')
        .data(showCommonLabel ? [0] : []);
    commonLabel.enter().append('g')
        .classed('axistext', true);
    commonLabel.exit().remove();

    commonLabel.each(function() {
        var label = d3.select(this),
            lpath = label.selectAll('path').data([0]),
            ltext = label.selectAll('text').data([0]);

        lpath.enter().append('path')
            .style({'stroke-width': '1px'});

        lpath.style({
            fill: commonLabelOpts.bgcolor || Color.defaultLine,
            stroke: commonLabelOpts.bordercolor || Color.background,
        });

        ltext.enter().append('text')
            // prohibit tex interpretation until we can handle
            // tex and regular text together
            .attr('data-notex', 1);

        ltext.text(t0)
            .call(Drawing.font,
                commonLabelOpts.font.family || fontFamily,
                commonLabelOpts.font.size || fontSize,
                commonLabelOpts.font.color || Color.background
             )
            .call(svgTextUtils.positionText, 0, 0)
            .call(svgTextUtils.convertToTspans, gd);

        label.attr('transform', '');

        var tbb = ltext.node().getBoundingClientRect();
        if(hovermode === 'x') {
            ltext.attr('text-anchor', 'middle')
                .call(svgTextUtils.positionText, 0, (xa.side === 'top' ?
                    (outerTop - tbb.bottom - HOVERARROWSIZE - HOVERTEXTPAD) :
                    (outerTop - tbb.top + HOVERARROWSIZE + HOVERTEXTPAD)));

            var topsign = xa.side === 'top' ? '-' : '';
            lpath.attr('d', 'M0,0' +
                'L' + HOVERARROWSIZE + ',' + topsign + HOVERARROWSIZE +
                'H' + (HOVERTEXTPAD + tbb.width / 2) +
                'v' + topsign + (HOVERTEXTPAD * 2 + tbb.height) +
                'H-' + (HOVERTEXTPAD + tbb.width / 2) +
                'V' + topsign + HOVERARROWSIZE + 'H-' + HOVERARROWSIZE + 'Z');

            label.attr('transform', 'translate(' +
                (xa._offset + (c0.x0 + c0.x1) / 2) + ',' +
                (ya._offset + (xa.side === 'top' ? 0 : ya._length)) + ')');
        }
        else {
            ltext.attr('text-anchor', ya.side === 'right' ? 'start' : 'end')
                .call(svgTextUtils.positionText,
                    (ya.side === 'right' ? 1 : -1) * (HOVERTEXTPAD + HOVERARROWSIZE),
                    outerTop - tbb.top - tbb.height / 2);

            var leftsign = ya.side === 'right' ? '' : '-';
            lpath.attr('d', 'M0,0' +
                'L' + leftsign + HOVERARROWSIZE + ',' + HOVERARROWSIZE +
                'V' + (HOVERTEXTPAD + tbb.height / 2) +
                'h' + leftsign + (HOVERTEXTPAD * 2 + tbb.width) +
                'V-' + (HOVERTEXTPAD + tbb.height / 2) +
                'H' + leftsign + HOVERARROWSIZE + 'V-' + HOVERARROWSIZE + 'Z');

            label.attr('transform', 'translate(' +
                (xa._offset + (ya.side === 'right' ? xa._length : 0)) + ',' +
                (ya._offset + (c0.y0 + c0.y1) / 2) + ')');
        }
        // remove the "close but not quite" points
        // because of error bars, only take up to a space
        hoverData = hoverData.filter(function(d) {
            return (d.zLabelVal !== undefined) ||
                (d[commonAttr] || '').split(' ')[0] === t00;
        });
    });

    // show all the individual labels

    // first create the objects
    var hoverLabels = container.selectAll('g.hovertext')
        .data(hoverData, function(d) {
            return [d.trace.index, d.index, d.x0, d.y0, d.name, d.attr, d.xa, d.ya || ''].join(',');
        });
    hoverLabels.enter().append('g')
        .classed('hovertext', true)
        .each(function() {
            var g = d3.select(this);
            // trace name label (rect and text.name)
            g.append('rect')
                .call(Color.fill, Color.addOpacity(bgColor, 0.8));
            g.append('text').classed('name', true);
            // trace data label (path and text.nums)
            g.append('path')
                .style('stroke-width', '1px');
            g.append('text').classed('nums', true)
                .call(Drawing.font, fontFamily, fontSize);
        });
    hoverLabels.exit().remove();

    // then put the text in, position the pointer to the data,
    // and figure out sizes
    hoverLabels.each(function(d) {
        var g = d3.select(this).attr('transform', ''),
            name = '',
            text = '';

            // combine possible non-opaque trace color with bgColor
        var baseColor = Color.opacity(d.color) ? d.color : Color.defaultLine;
        var traceColor = Color.combine(baseColor, bgColor);

        // find a contrasting color for border and text
        var contrastColor = d.borderColor || Color.contrast(traceColor);

        // to get custom 'name' labels pass cleanPoint
        if(d.nameOverride !== undefined) d.name = d.nameOverride;

        if(d.name) {
            // strip out our pseudo-html elements from d.name (if it exists at all)
            name = svgTextUtils.plainText(d.name || '');

            var nameLength = Math.round(d.nameLength);

            if(nameLength > -1 && name.length > nameLength) {
                if(nameLength > 3) name = name.substr(0, nameLength - 3) + '...';
                else name = name.substr(0, nameLength);
            }
        }

        // used by other modules (initially just ternary) that
        // manage their own hoverinfo independent of cleanPoint
        // the rest of this will still apply, so such modules
        // can still put things in (x|y|z)Label, text, and name
        // and hoverinfo will still determine their visibility
        if(d.extraText !== undefined) text += d.extraText;

        if(d.zLabel !== undefined) {
            if(d.xLabel !== undefined) text += 'x: ' + d.xLabel + '<br>';
            if(d.yLabel !== undefined) text += 'y: ' + d.yLabel + '<br>';
            text += (text ? 'z: ' : '') + d.zLabel;
        }
        else if(showCommonLabel && d[hovermode + 'Label'] === t0) {
            text = d[(hovermode === 'x' ? 'y' : 'x') + 'Label'] || '';
        }
        else if(d.xLabel === undefined) {
            if(d.yLabel !== undefined) text = d.yLabel;
        }
        else if(d.yLabel === undefined) text = d.xLabel;
        else text = '(' + d.xLabel + ', ' + d.yLabel + ')';

        if(d.text && !Array.isArray(d.text)) {
            text += (text ? '<br>' : '') + d.text;
        }

        // if 'text' is empty at this point,
        // put 'name' in main label and don't show secondary label
        if(text === '') {
            // if 'name' is also empty, remove entire label
            if(name === '') g.remove();
            text = name;
        }

        // main label
        var tx = g.select('text.nums')
            .call(Drawing.font,
                d.fontFamily || fontFamily,
                d.fontSize || fontSize,
                d.fontColor || contrastColor)
            .text(text)
            .attr('data-notex', 1)
            .call(svgTextUtils.positionText, 0, 0)
            .call(svgTextUtils.convertToTspans, gd);

        var tx2 = g.select('text.name'),
            tx2width = 0;

        // secondary label for non-empty 'name'
        if(name && name !== text) {
            tx2.call(Drawing.font,
                    d.fontFamily || fontFamily,
                    d.fontSize || fontSize,
                    traceColor)
                .text(name)
                .attr('data-notex', 1)
                .call(svgTextUtils.positionText, 0, 0)
                .call(svgTextUtils.convertToTspans, gd);
            tx2width = tx2.node().getBoundingClientRect().width + 2 * HOVERTEXTPAD;
        }
        else {
            tx2.remove();
            g.select('rect').remove();
        }

        g.select('path')
            .style({
                fill: traceColor,
                stroke: contrastColor
            });
        var tbb = tx.node().getBoundingClientRect(),
            htx = d.xa._offset + (d.x0 + d.x1) / 2,
            hty = d.ya._offset + (d.y0 + d.y1) / 2,
            dx = Math.abs(d.x1 - d.x0),
            dy = Math.abs(d.y1 - d.y0),
            txTotalWidth = tbb.width + HOVERARROWSIZE + HOVERTEXTPAD + tx2width,
            anchorStartOK,
            anchorEndOK;

        d.ty0 = outerTop - tbb.top;
        d.bx = tbb.width + 2 * HOVERTEXTPAD;
        d.by = tbb.height + 2 * HOVERTEXTPAD;
        d.anchor = 'start';
        d.txwidth = tbb.width;
        d.tx2width = tx2width;
        d.offset = 0;

        if(rotateLabels) {
            d.pos = htx;
            anchorStartOK = hty + dy / 2 + txTotalWidth <= outerHeight;
            anchorEndOK = hty - dy / 2 - txTotalWidth >= 0;
            if((d.idealAlign === 'top' || !anchorStartOK) && anchorEndOK) {
                hty -= dy / 2;
                d.anchor = 'end';
            } else if(anchorStartOK) {
                hty += dy / 2;
                d.anchor = 'start';
            } else d.anchor = 'middle';
        }
        else {
            d.pos = hty;
            anchorStartOK = htx + dx / 2 + txTotalWidth <= outerWidth;
            anchorEndOK = htx - dx / 2 - txTotalWidth >= 0;
            if((d.idealAlign === 'left' || !anchorStartOK) && anchorEndOK) {
                htx -= dx / 2;
                d.anchor = 'end';
            } else if(anchorStartOK) {
                htx += dx / 2;
                d.anchor = 'start';
            } else d.anchor = 'middle';
        }

        tx.attr('text-anchor', d.anchor);
        if(tx2width) tx2.attr('text-anchor', d.anchor);
        g.attr('transform', 'translate(' + htx + ',' + hty + ')' +
            (rotateLabels ? 'rotate(' + YANGLE + ')' : ''));
    });

    return hoverLabels;
}

// Make groups of touching points, and within each group
// move each point so that no labels overlap, but the average
// label position is the same as it was before moving. Indicentally,
// this is equivalent to saying all the labels are on equal linear
// springs about their initial position. Initially, each point is
// its own group, but as we find overlaps we will clump the points.
//
// Also, there are hard constraints at the edges of the graphs,
// that push all groups to the middle so they are visible. I don't
// know what happens if the group spans all the way from one edge to
// the other, though it hardly matters - there's just too much
// information then.
function hoverAvoidOverlaps(hoverData, ax) {
    var nummoves = 0,

        // make groups of touching points
        pointgroups = hoverData
            .map(function(d, i) {
                var axis = d[ax];
                return [{
                    i: i,
                    dp: 0,
                    pos: d.pos,
                    posref: d.posref,
                    size: d.by * (axis._id.charAt(0) === 'x' ? YFACTOR : 1) / 2,
                    pmin: axis._offset,
                    pmax: axis._offset + axis._length
                }];
            })
            .sort(function(a, b) { return a[0].posref - b[0].posref; }),
        donepositioning,
        topOverlap,
        bottomOverlap,
        i, j,
        pti,
        sumdp;

    function constrainGroup(grp) {
        var minPt = grp[0],
            maxPt = grp[grp.length - 1];

        // overlap with the top - positive vals are overlaps
        topOverlap = minPt.pmin - minPt.pos - minPt.dp + minPt.size;

        // overlap with the bottom - positive vals are overlaps
        bottomOverlap = maxPt.pos + maxPt.dp + maxPt.size - minPt.pmax;

        // check for min overlap first, so that we always
        // see the largest labels
        // allow for .01px overlap, so we don't get an
        // infinite loop from rounding errors
        if(topOverlap > 0.01) {
            for(j = grp.length - 1; j >= 0; j--) grp[j].dp += topOverlap;
            donepositioning = false;
        }
        if(bottomOverlap < 0.01) return;
        if(topOverlap < -0.01) {
            // make sure we're not pushing back and forth
            for(j = grp.length - 1; j >= 0; j--) grp[j].dp -= bottomOverlap;
            donepositioning = false;
        }
        if(!donepositioning) return;

        // no room to fix positioning, delete off-screen points

        // first see how many points we need to delete
        var deleteCount = 0;
        for(i = 0; i < grp.length; i++) {
            pti = grp[i];
            if(pti.pos + pti.dp + pti.size > minPt.pmax) deleteCount++;
        }

        // start by deleting points whose data is off screen
        for(i = grp.length - 1; i >= 0; i--) {
            if(deleteCount <= 0) break;
            pti = grp[i];

            // pos has already been constrained to [pmin,pmax]
            // so look for points close to that to delete
            if(pti.pos > minPt.pmax - 1) {
                pti.del = true;
                deleteCount--;
            }
        }
        for(i = 0; i < grp.length; i++) {
            if(deleteCount <= 0) break;
            pti = grp[i];

            // pos has already been constrained to [pmin,pmax]
            // so look for points close to that to delete
            if(pti.pos < minPt.pmin + 1) {
                pti.del = true;
                deleteCount--;

                // shift the whole group minus into this new space
                bottomOverlap = pti.size * 2;
                for(j = grp.length - 1; j >= 0; j--) grp[j].dp -= bottomOverlap;
            }
        }
        // then delete points that go off the bottom
        for(i = grp.length - 1; i >= 0; i--) {
            if(deleteCount <= 0) break;
            pti = grp[i];
            if(pti.pos + pti.dp + pti.size > minPt.pmax) {
                pti.del = true;
                deleteCount--;
            }
        }
    }

    // loop through groups, combining them if they overlap,
    // until nothing moves
    while(!donepositioning && nummoves <= hoverData.length) {
        // to avoid infinite loops, don't move more times
        // than there are traces
        nummoves++;

        // assume nothing will move in this iteration,
        // reverse this if it does
        donepositioning = true;
        i = 0;
        while(i < pointgroups.length - 1) {
                // the higher (g0) and lower (g1) point group
            var g0 = pointgroups[i],
                g1 = pointgroups[i + 1],

                // the lowest point in the higher group (p0)
                // the highest point in the lower group (p1)
                p0 = g0[g0.length - 1],
                p1 = g1[0];
            topOverlap = p0.pos + p0.dp + p0.size - p1.pos - p1.dp + p1.size;

            // Only group points that lie on the same axes
            if(topOverlap > 0.01 && (p0.pmin === p1.pmin) && (p0.pmax === p1.pmax)) {
                // push the new point(s) added to this group out of the way
                for(j = g1.length - 1; j >= 0; j--) g1[j].dp += topOverlap;

                // add them to the group
                g0.push.apply(g0, g1);
                pointgroups.splice(i + 1, 1);

                // adjust for minimum average movement
                sumdp = 0;
                for(j = g0.length - 1; j >= 0; j--) sumdp += g0[j].dp;
                bottomOverlap = sumdp / g0.length;
                for(j = g0.length - 1; j >= 0; j--) g0[j].dp -= bottomOverlap;
                donepositioning = false;
            }
            else i++;
        }

        // check if we're going off the plot on either side and fix
        pointgroups.forEach(constrainGroup);
    }

    // now put these offsets into hoverData
    for(i = pointgroups.length - 1; i >= 0; i--) {
        var grp = pointgroups[i];
        for(j = grp.length - 1; j >= 0; j--) {
            var pt = grp[j],
                hoverPt = hoverData[pt.i];
            hoverPt.offset = pt.dp;
            hoverPt.del = pt.del;
        }
    }
}

function alignHoverText(hoverLabels, rotateLabels) {
    // finally set the text positioning relative to the data and draw the
    // box around it
    hoverLabels.each(function(d) {
        var g = d3.select(this);
        if(d.del) {
            g.remove();
            return;
        }
        var horzSign = d.anchor === 'end' ? -1 : 1,
            tx = g.select('text.nums'),
            alignShift = {start: 1, end: -1, middle: 0}[d.anchor],
            txx = alignShift * (HOVERARROWSIZE + HOVERTEXTPAD),
            tx2x = txx + alignShift * (d.txwidth + HOVERTEXTPAD),
            offsetX = 0,
            offsetY = d.offset;
        if(d.anchor === 'middle') {
            txx -= d.tx2width / 2;
            tx2x -= d.tx2width / 2;
        }
        if(rotateLabels) {
            offsetY *= -YSHIFTY;
            offsetX = d.offset * YSHIFTX;
        }

        g.select('path').attr('d', d.anchor === 'middle' ?
            // middle aligned: rect centered on data
            ('M-' + (d.bx / 2) + ',-' + (d.by / 2) + 'h' + d.bx + 'v' + d.by + 'h-' + d.bx + 'Z') :
            // left or right aligned: side rect with arrow to data
            ('M0,0L' + (horzSign * HOVERARROWSIZE + offsetX) + ',' + (HOVERARROWSIZE + offsetY) +
                'v' + (d.by / 2 - HOVERARROWSIZE) +
                'h' + (horzSign * d.bx) +
                'v-' + d.by +
                'H' + (horzSign * HOVERARROWSIZE + offsetX) +
                'V' + (offsetY - HOVERARROWSIZE) +
                'Z'));

        tx.call(svgTextUtils.positionText,
            txx + offsetX, offsetY + d.ty0 - d.by / 2 + HOVERTEXTPAD);

        if(d.tx2width) {
            g.select('text.name')
                .call(svgTextUtils.positionText,
                    tx2x + alignShift * HOVERTEXTPAD + offsetX,
                    offsetY + d.ty0 - d.by / 2 + HOVERTEXTPAD);
            g.select('rect')
                .call(Drawing.setRect,
                    tx2x + (alignShift - 1) * d.tx2width / 2 + offsetX,
                    offsetY - d.by / 2 - 1,
                    d.tx2width, d.by + 2);
        }
    });
}

function cleanPoint(d, hovermode) {
    var index = d.index;
    var trace = d.trace || {};
    var cd0 = d.cd[0];
    var cd = d.cd[index] || {};

    var getVal = Array.isArray(index) ?
        function(calcKey, traceKey) {
            return Lib.castOption(cd0, index, calcKey) ||
                Lib.extractOption({}, trace, '', traceKey);
        } :
        function(calcKey, traceKey) {
            return Lib.extractOption(cd, trace, calcKey, traceKey);
        };

    function fill(key, calcKey, traceKey) {
        var val = getVal(calcKey, traceKey);
        if(val) d[key] = val;
    }

    fill('hoverinfo', 'hi', 'hoverinfo');
    fill('color', 'hbg', 'hoverlabel.bgcolor');
    fill('borderColor', 'hbc', 'hoverlabel.bordercolor');
    fill('fontFamily', 'htf', 'hoverlabel.font.family');
    fill('fontSize', 'hts', 'hoverlabel.font.size');
    fill('fontColor', 'htc', 'hoverlabel.font.color');
    fill('nameLength', 'hnl', 'hoverlabel.namelength');

    d.posref = hovermode === 'y' ? (d.x0 + d.x1) / 2 : (d.y0 + d.y1) / 2;

    // then constrain all the positions to be on the plot
    d.x0 = Lib.constrain(d.x0, 0, d.xa._length);
    d.x1 = Lib.constrain(d.x1, 0, d.xa._length);
    d.y0 = Lib.constrain(d.y0, 0, d.ya._length);
    d.y1 = Lib.constrain(d.y1, 0, d.ya._length);

    // and convert the x and y label values into objects
    // formatted as text, with font info
    var logOffScale;
    if(d.xLabelVal !== undefined) {
        logOffScale = (d.xa.type === 'log' && d.xLabelVal <= 0);
        var xLabelObj = Axes.tickText(d.xa,
                d.xa.c2l(logOffScale ? -d.xLabelVal : d.xLabelVal), 'hover');
        if(logOffScale) {
            if(d.xLabelVal === 0) d.xLabel = '0';
            else d.xLabel = '-' + xLabelObj.text;
        }
        // TODO: should we do something special if the axis calendar and
        // the data calendar are different? Somehow display both dates with
        // their system names? Right now it will just display in the axis calendar
        // but users could add the other one as text.
        else d.xLabel = xLabelObj.text;
        d.xVal = d.xa.c2d(d.xLabelVal);
    }

    if(d.yLabelVal !== undefined) {
        logOffScale = (d.ya.type === 'log' && d.yLabelVal <= 0);
        var yLabelObj = Axes.tickText(d.ya,
                d.ya.c2l(logOffScale ? -d.yLabelVal : d.yLabelVal), 'hover');
        if(logOffScale) {
            if(d.yLabelVal === 0) d.yLabel = '0';
            else d.yLabel = '-' + yLabelObj.text;
        }
        // TODO: see above TODO
        else d.yLabel = yLabelObj.text;
        d.yVal = d.ya.c2d(d.yLabelVal);
    }

    if(d.zLabelVal !== undefined) d.zLabel = String(d.zLabelVal);

    // for box means and error bars, add the range to the label
    if(!isNaN(d.xerr) && !(d.xa.type === 'log' && d.xerr <= 0)) {
        var xeText = Axes.tickText(d.xa, d.xa.c2l(d.xerr), 'hover').text;
        if(d.xerrneg !== undefined) {
            d.xLabel += ' +' + xeText + ' / -' +
                Axes.tickText(d.xa, d.xa.c2l(d.xerrneg), 'hover').text;
        }
        else d.xLabel += ' ± ' + xeText;

        // small distance penalty for error bars, so that if there are
        // traces with errors and some without, the error bar label will
        // hoist up to the point
        if(hovermode === 'x') d.distance += 1;
    }
    if(!isNaN(d.yerr) && !(d.ya.type === 'log' && d.yerr <= 0)) {
        var yeText = Axes.tickText(d.ya, d.ya.c2l(d.yerr), 'hover').text;
        if(d.yerrneg !== undefined) {
            d.yLabel += ' +' + yeText + ' / -' +
                Axes.tickText(d.ya, d.ya.c2l(d.yerrneg), 'hover').text;
        }
        else d.yLabel += ' ± ' + yeText;

        if(hovermode === 'y') d.distance += 1;
    }

    var infomode = d.hoverinfo || d.trace.hoverinfo;
    if(infomode !== 'all') {
        infomode = infomode.split('+');
        if(infomode.indexOf('x') === -1) d.xLabel = undefined;
        if(infomode.indexOf('y') === -1) d.yLabel = undefined;
        if(infomode.indexOf('z') === -1) d.zLabel = undefined;
        if(infomode.indexOf('text') === -1) d.text = undefined;
        if(infomode.indexOf('name') === -1) d.name = undefined;
    }

    return d;
}

function createSpikelines(hoverData, opts) {
    var hovermode = opts.hovermode;
    var container = opts.container;
    var c0 = hoverData[0];
    var xa = c0.xa;
    var ya = c0.ya;
    var showX = xa.showspikes;
    var showY = ya.showspikes;

    // Remove old spikeline items
    container.selectAll('.spikeline').remove();

    if(hovermode !== 'closest' || !(showX || showY)) return;

    var fullLayout = opts.fullLayout;
    var xPoint = xa._offset + (c0.x0 + c0.x1) / 2;
    var yPoint = ya._offset + (c0.y0 + c0.y1) / 2;
    var contrastColor = Color.combine(fullLayout.plot_bgcolor, fullLayout.paper_bgcolor);
    var dfltDashColor = tinycolor.readability(c0.color, contrastColor) < 1.5 ?
            Color.contrast(contrastColor) : c0.color;

    if(showY) {
        var yMode = ya.spikemode;
        var yThickness = ya.spikethickness;
        var yColor = ya.spikecolor || dfltDashColor;
        var yBB = ya._boundingBox;
        var xEdge = ((yBB.left + yBB.right) / 2) < xPoint ? yBB.right : yBB.left;

        if(yMode.indexOf('toaxis') !== -1 || yMode.indexOf('across') !== -1) {
            var xBase = xEdge;
            var xEndSpike = xPoint;
            if(yMode.indexOf('across') !== -1) {
                xBase = ya._counterSpan[0];
                xEndSpike = ya._counterSpan[1];
            }

            // Background horizontal Line (to y-axis)
            container.append('line')
                .attr({
                    'x1': xBase,
                    'x2': xEndSpike,
                    'y1': yPoint,
                    'y2': yPoint,
                    'stroke-width': yThickness + 2,
                    'stroke': contrastColor
                })
                .classed('spikeline', true)
                .classed('crisp', true);

            // Foreground horizontal line (to y-axis)
            container.append('line')
                .attr({
                    'x1': xBase,
                    'x2': xEndSpike,
                    'y1': yPoint,
                    'y2': yPoint,
                    'stroke-width': yThickness,
                    'stroke': yColor,
                    'stroke-dasharray': Drawing.dashStyle(ya.spikedash, yThickness)
                })
                .classed('spikeline', true)
                .classed('crisp', true);
        }
        // Y axis marker
        if(yMode.indexOf('marker') !== -1) {
            container.append('circle')
                .attr({
                    'cx': xEdge + (ya.side !== 'right' ? yThickness : -yThickness),
                    'cy': yPoint,
                    'r': yThickness,
                    'fill': yColor
                })
                .classed('spikeline', true);
        }
    }

    if(showX) {
        var xMode = xa.spikemode;
        var xThickness = xa.spikethickness;
        var xColor = xa.spikecolor || dfltDashColor;
        var xBB = xa._boundingBox;
        var yEdge = ((xBB.top + xBB.bottom) / 2) < yPoint ? xBB.bottom : xBB.top;

        if(xMode.indexOf('toaxis') !== -1 || xMode.indexOf('across') !== -1) {
            var yBase = yEdge;
            var yEndSpike = yPoint;
            if(xMode.indexOf('across') !== -1) {
                yBase = xa._counterSpan[0];
                yEndSpike = xa._counterSpan[1];
            }

            // Background vertical line (to x-axis)
            container.append('line')
                .attr({
                    'x1': xPoint,
                    'x2': xPoint,
                    'y1': yBase,
                    'y2': yEndSpike,
                    'stroke-width': xThickness + 2,
                    'stroke': contrastColor
                })
                .classed('spikeline', true)
                .classed('crisp', true);

            // Foreground vertical line (to x-axis)
            container.append('line')
                .attr({
                    'x1': xPoint,
                    'x2': xPoint,
                    'y1': yBase,
                    'y2': yEndSpike,
                    'stroke-width': xThickness,
                    'stroke': xColor,
                    'stroke-dasharray': Drawing.dashStyle(xa.spikedash, xThickness)
                })
                .classed('spikeline', true)
                .classed('crisp', true);
        }

        // X axis marker
        if(xMode.indexOf('marker') !== -1) {
            container.append('circle')
                .attr({
                    'cx': xPoint,
                    'cy': yEdge - (xa.side !== 'top' ? xThickness : -xThickness),
                    'r': xThickness,
                    'fill': xColor
                })
                .classed('spikeline', true);
        }
    }
}

function hoverChanged(gd, evt, oldhoverdata) {
    // don't emit any events if nothing changed
    if(!oldhoverdata || oldhoverdata.length !== gd._hoverdata.length) return true;

    for(var i = oldhoverdata.length - 1; i >= 0; i--) {
        var oldPt = oldhoverdata[i],
            newPt = gd._hoverdata[i];
        if(oldPt.curveNumber !== newPt.curveNumber ||
                String(oldPt.pointNumber) !== String(newPt.pointNumber)) {
            return true;
        }
    }
    return false;
}

},{"../../lib":353,"../../lib/events":343,"../../lib/override_cursor":363,"../../lib/svg_text_utils":375,"../../plots/cartesian/axes":396,"../../registry":436,"../color":233,"../dragelement":254,"../drawing":257,"./constants":269,"./helpers":271,"d3":62,"fast-isnumeric":68,"tinycolor2":200}],273:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');

module.exports = function handleHoverLabelDefaults(contIn, contOut, coerce, opts) {
    opts = opts || {};

    coerce('hoverlabel.bgcolor', opts.bgcolor);
    coerce('hoverlabel.bordercolor', opts.bordercolor);
    coerce('hoverlabel.namelength', opts.namelength);
    Lib.coerceFont(coerce, 'hoverlabel.font', opts.font);
};

},{"../../lib":353}],274:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');
var Lib = require('../../lib');
var dragElement = require('../dragelement');
var helpers = require('./helpers');
var layoutAttributes = require('./layout_attributes');

module.exports = {
    moduleType: 'component',
    name: 'fx',

    constants: require('./constants'),
    schema: {
        layout: layoutAttributes
    },

    attributes: require('./attributes'),
    layoutAttributes: layoutAttributes,

    supplyLayoutGlobalDefaults: require('./layout_global_defaults'),
    supplyDefaults: require('./defaults'),
    supplyLayoutDefaults: require('./layout_defaults'),

    calc: require('./calc'),

    getDistanceFunction: helpers.getDistanceFunction,
    getClosest: helpers.getClosest,
    inbox: helpers.inbox,
    appendArrayPointValue: helpers.appendArrayPointValue,

    castHoverOption: castHoverOption,
    castHoverinfo: castHoverinfo,

    hover: require('./hover').hover,
    unhover: dragElement.unhover,

    loneHover: require('./hover').loneHover,
    loneUnhover: loneUnhover,

    click: require('./click')
};

function loneUnhover(containerOrSelection) {
    // duck type whether the arg is a d3 selection because ie9 doesn't
    // handle instanceof like modern browsers do.
    var selection = Lib.isD3Selection(containerOrSelection) ?
            containerOrSelection :
            d3.select(containerOrSelection);

    selection.selectAll('g.hovertext').remove();
    selection.selectAll('.spikeline').remove();
}

// helpers for traces that use Fx.loneHover

function castHoverOption(trace, ptNumber, attr) {
    return Lib.castOption(trace, ptNumber, 'hoverlabel.' + attr);
}

function castHoverinfo(trace, fullLayout, ptNumber) {
    function _coerce(val) {
        return Lib.coerceHoverinfo({hoverinfo: val}, {_module: trace._module}, fullLayout);
    }

    return Lib.castOption(trace, ptNumber, 'hoverinfo', _coerce);
}

},{"../../lib":353,"../dragelement":254,"./attributes":266,"./calc":267,"./click":268,"./constants":269,"./defaults":270,"./helpers":271,"./hover":272,"./layout_attributes":275,"./layout_defaults":276,"./layout_global_defaults":277,"d3":62}],275:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var constants = require('./constants');

var fontAttrs = require('../../plots/font_attributes')({
    editType: 'none',
    
});
fontAttrs.family.dflt = constants.HOVERFONT;
fontAttrs.size.dflt = constants.HOVERFONTSIZE;

module.exports = {
    dragmode: {
        valType: 'enumerated',
        
        values: ['zoom', 'pan', 'select', 'lasso', 'orbit', 'turntable'],
        dflt: 'zoom',
        editType: 'modebar',
        
    },
    hovermode: {
        valType: 'enumerated',
        
        values: ['x', 'y', 'closest', false],
        editType: 'modebar',
        
    },

    hoverlabel: {
        bgcolor: {
            valType: 'color',
            
            editType: 'none',
            
        },
        bordercolor: {
            valType: 'color',
            
            editType: 'none',
            
        },
        font: fontAttrs,
        namelength: {
            valType: 'integer',
            min: -1,
            dflt: 15,
            
            editType: 'none',
            
        },
        editType: 'none'
    }
};

},{"../../plots/font_attributes":420,"./constants":269}],276:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var layoutAttributes = require('./layout_attributes');

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }

    coerce('dragmode');

    var hovermodeDflt;
    if(layoutOut._has('cartesian')) {
        // flag for 'horizontal' plots:
        // determines the state of the mode bar 'compare' hovermode button
        layoutOut._isHoriz = isHoriz(fullData);
        hovermodeDflt = layoutOut._isHoriz ? 'y' : 'x';
    }
    else hovermodeDflt = 'closest';

    coerce('hovermode', hovermodeDflt);

    // if only mapbox or geo subplots is present on graph,
    // reset 'zoom' dragmode to 'pan' until 'zoom' is implemented,
    // so that the correct modebar button is active
    var hasMapbox = layoutOut._has('mapbox');
    var hasGeo = layoutOut._has('geo');
    var len = layoutOut._basePlotModules.length;

    if(layoutOut.dragmode === 'zoom' && (
        ((hasMapbox || hasGeo) && len === 1) ||
        (hasMapbox && hasGeo && len === 2)
    )) {
        layoutOut.dragmode = 'pan';
    }
};

function isHoriz(fullData) {
    var out = true;

    for(var i = 0; i < fullData.length; i++) {
        var trace = fullData[i];

        if(trace.orientation !== 'h') {
            out = false;
            break;
        }
    }

    return out;
}

},{"../../lib":353,"./layout_attributes":275}],277:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var handleHoverLabelDefaults = require('./hoverlabel_defaults');
var layoutAttributes = require('./layout_attributes');

module.exports = function supplyLayoutGlobalDefaults(layoutIn, layoutOut) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }

    handleHoverLabelDefaults(layoutIn, layoutOut, coerce);
};

},{"../../lib":353,"./hoverlabel_defaults":273,"./layout_attributes":275}],278:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var cartesianConstants = require('../../plots/cartesian/constants');


module.exports = {
    _isLinkedToArray: 'image',

    visible: {
        valType: 'boolean',
        
        dflt: true,
        editType: 'arraydraw',
        
    },

    source: {
        valType: 'string',
        
        editType: 'arraydraw',
        
    },

    layer: {
        valType: 'enumerated',
        values: ['below', 'above'],
        dflt: 'above',
        
        editType: 'arraydraw',
        
    },

    sizex: {
        valType: 'number',
        
        dflt: 0,
        editType: 'arraydraw',
        
    },

    sizey: {
        valType: 'number',
        
        dflt: 0,
        editType: 'arraydraw',
        
    },

    sizing: {
        valType: 'enumerated',
        values: ['fill', 'contain', 'stretch'],
        dflt: 'contain',
        
        editType: 'arraydraw',
        
    },

    opacity: {
        valType: 'number',
        
        min: 0,
        max: 1,
        dflt: 1,
        editType: 'arraydraw',
        
    },

    x: {
        valType: 'any',
        
        dflt: 0,
        editType: 'arraydraw',
        
    },

    y: {
        valType: 'any',
        
        dflt: 0,
        editType: 'arraydraw',
        
    },

    xanchor: {
        valType: 'enumerated',
        values: ['left', 'center', 'right'],
        dflt: 'left',
        
        editType: 'arraydraw',
        
    },

    yanchor: {
        valType: 'enumerated',
        values: ['top', 'middle', 'bottom'],
        dflt: 'top',
        
        editType: 'arraydraw',
        
    },

    xref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.x.toString()
        ],
        dflt: 'paper',
        
        editType: 'arraydraw',
        
    },

    yref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.y.toString()
        ],
        dflt: 'paper',
        
        editType: 'arraydraw',
        
    },
    editType: 'arraydraw'
};

},{"../../plots/cartesian/constants":401}],279:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var toLogRange = require('../../lib/to_log_range');

/*
 * convertCoords: when converting an axis between log and linear
 * you need to alter any images on that axis to keep them
 * pointing at the same data point.
 * In v2.0 this will become obsolete (or perhaps size will still need conversion?)
 * we convert size by declaring that the maximum extent *in data units* should be
 * the same, assuming the image is anchored by its center (could remove that restriction
 * if we think it's important) even though the actual left and right values will not be
 * quite the same since the scale becomes nonlinear (and central anchor means the pixel
 * center of the image, not the data units center)
 *
 * gd: the plot div
 * ax: the axis being changed
 * newType: the type it's getting
 * doExtra: function(attr, val) from inside relayout that sets the attribute.
 *     Use this to make the changes as it's aware if any other changes in the
 *     same relayout call should override this conversion.
 */
module.exports = function convertCoords(gd, ax, newType, doExtra) {
    ax = ax || {};

    var toLog = (newType === 'log') && (ax.type === 'linear'),
        fromLog = (newType === 'linear') && (ax.type === 'log');

    if(!(toLog || fromLog)) return;

    var images = gd._fullLayout.images,
        axLetter = ax._id.charAt(0),
        image,
        attrPrefix;

    for(var i = 0; i < images.length; i++) {
        image = images[i];
        attrPrefix = 'images[' + i + '].';

        if(image[axLetter + 'ref'] === ax._id) {
            var currentPos = image[axLetter],
                currentSize = image['size' + axLetter],
                newPos = null,
                newSize = null;

            if(toLog) {
                newPos = toLogRange(currentPos, ax.range);

                // this is the inverse of the conversion we do in fromLog below
                // so that the conversion is reversible (notice the fromLog conversion
                // is like sinh, and this one looks like arcsinh)
                var dx = currentSize / Math.pow(10, newPos) / 2;
                newSize = 2 * Math.log(dx + Math.sqrt(1 + dx * dx)) / Math.LN10;
            }
            else {
                newPos = Math.pow(10, currentPos);
                newSize = newPos * (Math.pow(10, currentSize / 2) - Math.pow(10, -currentSize / 2));
            }

            // if conversion failed, delete the value so it can get a default later on
            if(!isNumeric(newPos)) {
                newPos = null;
                newSize = null;
            }
            else if(!isNumeric(newSize)) newSize = null;

            doExtra(attrPrefix + axLetter, newPos);
            doExtra(attrPrefix + 'size' + axLetter, newSize);
        }
    }
};

},{"../../lib/to_log_range":377,"fast-isnumeric":68}],280:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');

var attributes = require('./attributes');
var name = 'images';

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    var opts = {
        name: name,
        handleItemDefaults: imageDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};


function imageDefaults(imageIn, imageOut, fullLayout) {

    function coerce(attr, dflt) {
        return Lib.coerce(imageIn, imageOut, attributes, attr, dflt);
    }

    var source = coerce('source');
    var visible = coerce('visible', !!source);

    if(!visible) return imageOut;

    coerce('layer');
    coerce('xanchor');
    coerce('yanchor');
    coerce('sizex');
    coerce('sizey');
    coerce('sizing');
    coerce('opacity');

    var gdMock = { _fullLayout: fullLayout },
        axLetters = ['x', 'y'];

    for(var i = 0; i < 2; i++) {
        // 'paper' is the fallback axref
        var axLetter = axLetters[i],
            axRef = Axes.coerceRef(imageIn, imageOut, gdMock, axLetter, 'paper');

        Axes.coercePosition(imageOut, gdMock, coerce, axRef, axLetter, 0);
    }

    return imageOut;
}

},{"../../lib":353,"../../plots/array_container_defaults":393,"../../plots/cartesian/axes":396,"./attributes":278}],281:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');
var Drawing = require('../drawing');
var Axes = require('../../plots/cartesian/axes');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');

module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout,
        imageDataAbove = [],
        imageDataSubplot = {},
        imageDataBelow = [],
        subplot,
        i;

    // Sort into top, subplot, and bottom layers
    for(i = 0; i < fullLayout.images.length; i++) {
        var img = fullLayout.images[i];

        if(img.visible) {
            if(img.layer === 'below' && img.xref !== 'paper' && img.yref !== 'paper') {
                subplot = img.xref + img.yref;

                var plotinfo = fullLayout._plots[subplot];

                if(!plotinfo) {
                    // Fall back to _imageLowerLayer in case the requested subplot doesn't exist.
                    // This can happen if you reference the image to an x / y axis combination
                    // that doesn't have any data on it (and layer is below)
                    imageDataBelow.push(img);
                    continue;
                }

                if(plotinfo.mainplot) {
                    subplot = plotinfo.mainplot.id;
                }

                if(!imageDataSubplot[subplot]) {
                    imageDataSubplot[subplot] = [];
                }
                imageDataSubplot[subplot].push(img);
            } else if(img.layer === 'above') {
                imageDataAbove.push(img);
            } else {
                imageDataBelow.push(img);
            }
        }
    }


    var anchors = {
        x: {
            left: { sizing: 'xMin', offset: 0 },
            center: { sizing: 'xMid', offset: -1 / 2 },
            right: { sizing: 'xMax', offset: -1 }
        },
        y: {
            top: { sizing: 'YMin', offset: 0 },
            middle: { sizing: 'YMid', offset: -1 / 2 },
            bottom: { sizing: 'YMax', offset: -1 }
        }
    };


    // Images must be converted to dataURL's for exporting.
    function setImage(d) {
        var thisImage = d3.select(this);

        if(this.img && this.img.src === d.source) {
            return;
        }

        thisImage.attr('xmlns', xmlnsNamespaces.svg);

        var imagePromise = new Promise(function(resolve) {

            var img = new Image();
            this.img = img;

            // If not set, a `tainted canvas` error is thrown
            img.setAttribute('crossOrigin', 'anonymous');
            img.onerror = errorHandler;
            img.onload = function() {
                var canvas = document.createElement('canvas');
                canvas.width = this.width;
                canvas.height = this.height;

                var ctx = canvas.getContext('2d');
                ctx.drawImage(this, 0, 0);

                var dataURL = canvas.toDataURL('image/png');

                thisImage.attr('xlink:href', dataURL);

                // resolve promise in onload handler instead of on 'load' to support IE11
                // see https://github.com/plotly/plotly.js/issues/1685
                // for more details
                resolve();
            };


            thisImage.on('error', errorHandler);

            img.src = d.source;

            function errorHandler() {
                thisImage.remove();
                resolve();
            }
        }.bind(this));

        gd._promises.push(imagePromise);
    }

    function applyAttributes(d) {
        var thisImage = d3.select(this);

        // Axes if specified
        var xa = Axes.getFromId(gd, d.xref),
            ya = Axes.getFromId(gd, d.yref);

        var size = fullLayout._size,
            width = xa ? Math.abs(xa.l2p(d.sizex) - xa.l2p(0)) : d.sizex * size.w,
            height = ya ? Math.abs(ya.l2p(d.sizey) - ya.l2p(0)) : d.sizey * size.h;

        // Offsets for anchor positioning
        var xOffset = width * anchors.x[d.xanchor].offset,
            yOffset = height * anchors.y[d.yanchor].offset;

        var sizing = anchors.x[d.xanchor].sizing + anchors.y[d.yanchor].sizing;

        // Final positions
        var xPos = (xa ? xa.r2p(d.x) + xa._offset : d.x * size.w + size.l) + xOffset,
            yPos = (ya ? ya.r2p(d.y) + ya._offset : size.h - d.y * size.h + size.t) + yOffset;


        // Construct the proper aspectRatio attribute
        switch(d.sizing) {
            case 'fill':
                sizing += ' slice';
                break;

            case 'stretch':
                sizing = 'none';
                break;
        }

        thisImage.attr({
            x: xPos,
            y: yPos,
            width: width,
            height: height,
            preserveAspectRatio: sizing,
            opacity: d.opacity
        });


        // Set proper clipping on images
        var xId = xa ? xa._id : '',
            yId = ya ? ya._id : '',
            clipAxes = xId + yId;

        thisImage.call(Drawing.setClipUrl, clipAxes ?
            ('clip' + fullLayout._uid + clipAxes) :
            null
        );
    }

    var imagesBelow = fullLayout._imageLowerLayer.selectAll('image')
            .data(imageDataBelow),
        imagesAbove = fullLayout._imageUpperLayer.selectAll('image')
            .data(imageDataAbove);

    imagesBelow.enter().append('image');
    imagesAbove.enter().append('image');

    imagesBelow.exit().remove();
    imagesAbove.exit().remove();

    imagesBelow.each(function(d) {
        setImage.bind(this)(d);
        applyAttributes.bind(this)(d);
    });
    imagesAbove.each(function(d) {
        setImage.bind(this)(d);
        applyAttributes.bind(this)(d);
    });

    var allSubplots = Object.keys(fullLayout._plots);
    for(i = 0; i < allSubplots.length; i++) {
        subplot = allSubplots[i];
        var subplotObj = fullLayout._plots[subplot];

        // filter out overlaid plots (which havd their images on the main plot)
        // and gl2d plots (which don't support below images, at least not yet)
        if(!subplotObj.imagelayer) continue;

        var imagesOnSubplot = subplotObj.imagelayer.selectAll('image')
            // even if there are no images on this subplot, we need to run
            // enter and exit in case there were previously
            .data(imageDataSubplot[subplot] || []);

        imagesOnSubplot.enter().append('image');
        imagesOnSubplot.exit().remove();

        imagesOnSubplot.each(function(d) {
            setImage.bind(this)(d);
            applyAttributes.bind(this)(d);
        });
    }
};

},{"../../constants/xmlns_namespaces":336,"../../plots/cartesian/axes":396,"../drawing":257,"d3":62}],282:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'images',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    draw: require('./draw'),

    convertCoords: require('./convert_coords')
};

},{"./attributes":278,"./convert_coords":279,"./defaults":280,"./draw":281}],283:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


/**
 * Determine the position anchor property of x/y xanchor/yanchor components.
 *
 * - values < 1/3 align the low side at that fraction,
 * - values [1/3, 2/3] align the center at that fraction,
 * - values > 2/3 align the right at that fraction.
 */

exports.isRightAnchor = function isRightAnchor(opts) {
    return (
        opts.xanchor === 'right' ||
        (opts.xanchor === 'auto' && opts.x >= 2 / 3)
    );
};

exports.isCenterAnchor = function isCenterAnchor(opts) {
    return (
        opts.xanchor === 'center' ||
        (opts.xanchor === 'auto' && opts.x > 1 / 3 && opts.x < 2 / 3)
    );
};

exports.isBottomAnchor = function isBottomAnchor(opts) {
    return (
        opts.yanchor === 'bottom' ||
        (opts.yanchor === 'auto' && opts.y <= 1 / 3)
    );
};

exports.isMiddleAnchor = function isMiddleAnchor(opts) {
    return (
        opts.yanchor === 'middle' ||
        (opts.yanchor === 'auto' && opts.y > 1 / 3 && opts.y < 2 / 3)
    );
};

},{}],284:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var colorAttrs = require('../color/attributes');


module.exports = {
    bgcolor: {
        valType: 'color',
        
        editType: 'legend',
        
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        
        editType: 'legend',
        
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 0,
        
        editType: 'legend',
        
    },
    font: fontAttrs({
        editType: 'legend',
        
    }),
    orientation: {
        valType: 'enumerated',
        values: ['v', 'h'],
        dflt: 'v',
        
        editType: 'legend',
        
    },
    traceorder: {
        valType: 'flaglist',
        flags: ['reversed', 'grouped'],
        extras: ['normal'],
        
        editType: 'legend',
        
    },
    tracegroupgap: {
        valType: 'number',
        min: 0,
        dflt: 10,
        
        editType: 'legend',
        
    },
    x: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 1.02,
        
        editType: 'legend',
        
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'left',
        
        editType: 'legend',
        
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 1,
        
        editType: 'legend',
        
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'auto',
        
        editType: 'legend',
        
    },
    editType: 'legend'
};

},{"../../plots/font_attributes":420,"../color/attributes":232}],285:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    scrollBarWidth: 4,
    scrollBarHeight: 20,
    scrollBarColor: '#808BA4',
    scrollBarMargin: 4
};

},{}],286:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');

var attributes = require('./attributes');
var basePlotLayoutAttributes = require('../../plots/layout_attributes');
var helpers = require('./helpers');


module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
    var containerIn = layoutIn.legend || {},
        containerOut = layoutOut.legend = {};

    var visibleTraces = 0,
        defaultOrder = 'normal',
        defaultX,
        defaultY,
        defaultXAnchor,
        defaultYAnchor;

    for(var i = 0; i < fullData.length; i++) {
        var trace = fullData[i];

        if(helpers.legendGetsTrace(trace)) {
            visibleTraces++;
            // always show the legend by default if there's a pie
            if(Registry.traceIs(trace, 'pie')) visibleTraces++;
        }

        if((Registry.traceIs(trace, 'bar') && layoutOut.barmode === 'stack') ||
                ['tonextx', 'tonexty'].indexOf(trace.fill) !== -1) {
            defaultOrder = helpers.isGrouped({traceorder: defaultOrder}) ?
                'grouped+reversed' : 'reversed';
        }

        if(trace.legendgroup !== undefined && trace.legendgroup !== '') {
            defaultOrder = helpers.isReversed({traceorder: defaultOrder}) ?
                'reversed+grouped' : 'grouped';
        }
    }

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, attributes, attr, dflt);
    }

    var showLegend = Lib.coerce(layoutIn, layoutOut,
        basePlotLayoutAttributes, 'showlegend', visibleTraces > 1);

    if(showLegend === false) return;

    coerce('bgcolor', layoutOut.paper_bgcolor);
    coerce('bordercolor');
    coerce('borderwidth');
    Lib.coerceFont(coerce, 'font', layoutOut.font);

    coerce('orientation');
    if(containerOut.orientation === 'h') {
        var xaxis = layoutIn.xaxis;
        if(xaxis && xaxis.rangeslider && xaxis.rangeslider.visible) {
            defaultX = 0;
            defaultXAnchor = 'left';
            defaultY = 1.1;
            defaultYAnchor = 'bottom';
        }
        else {
            defaultX = 0;
            defaultXAnchor = 'left';
            defaultY = -0.1;
            defaultYAnchor = 'top';
        }
    }

    coerce('traceorder', defaultOrder);
    if(helpers.isGrouped(layoutOut.legend)) coerce('tracegroupgap');

    coerce('x', defaultX);
    coerce('xanchor', defaultXAnchor);
    coerce('y', defaultY);
    coerce('yanchor', defaultYAnchor);
    Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
};

},{"../../lib":353,"../../plots/layout_attributes":427,"../../registry":436,"./attributes":284,"./helpers":290}],287:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Registry = require('../../registry');
var dragElement = require('../dragelement');
var Drawing = require('../drawing');
var Color = require('../color');
var svgTextUtils = require('../../lib/svg_text_utils');
var handleClick = require('./handle_click');

var constants = require('./constants');
var interactConstants = require('../../constants/interactions');
var LINE_SPACING = require('../../constants/alignment').LINE_SPACING;

var getLegendData = require('./get_legend_data');
var style = require('./style');
var helpers = require('./helpers');
var anchorUtils = require('./anchor_utils');

var DBLCLICKDELAY = interactConstants.DBLCLICKDELAY;

module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout;
    var clipId = 'legend' + fullLayout._uid;

    if(!fullLayout._infolayer || !gd.calcdata) return;

    if(!gd._legendMouseDownTime) gd._legendMouseDownTime = 0;

    var opts = fullLayout.legend,
        legendData = fullLayout.showlegend && getLegendData(gd.calcdata, opts),
        hiddenSlices = fullLayout.hiddenlabels || [];

    if(!fullLayout.showlegend || !legendData.length) {
        fullLayout._infolayer.selectAll('.legend').remove();
        fullLayout._topdefs.select('#' + clipId).remove();

        Plots.autoMargin(gd, 'legend');
        return;
    }

    var legend = fullLayout._infolayer.selectAll('g.legend')
        .data([0]);

    legend.enter().append('g')
        .attr({
            'class': 'legend',
            'pointer-events': 'all'
        });

    var clipPath = fullLayout._topdefs.selectAll('#' + clipId)
        .data([0]);

    clipPath.enter().append('clipPath')
        .attr('id', clipId)
        .append('rect');

    var bg = legend.selectAll('rect.bg')
        .data([0]);

    bg.enter().append('rect').attr({
        'class': 'bg',
        'shape-rendering': 'crispEdges'
    });

    bg.call(Color.stroke, opts.bordercolor);
    bg.call(Color.fill, opts.bgcolor);
    bg.style('stroke-width', opts.borderwidth + 'px');

    var scrollBox = legend.selectAll('g.scrollbox')
        .data([0]);

    scrollBox.enter().append('g')
        .attr('class', 'scrollbox');

    var scrollBar = legend.selectAll('rect.scrollbar')
        .data([0]);

    scrollBar.enter().append('rect')
        .attr({
            'class': 'scrollbar',
            'rx': 20,
            'ry': 2,
            'width': 0,
            'height': 0
        })
        .call(Color.fill, '#808BA4');

    var groups = scrollBox.selectAll('g.groups')
        .data(legendData);

    groups.enter().append('g')
        .attr('class', 'groups');

    groups.exit().remove();

    var traces = groups.selectAll('g.traces')
        .data(Lib.identity);

    traces.enter().append('g').attr('class', 'traces');
    traces.exit().remove();

    traces.call(style, gd)
        .style('opacity', function(d) {
            var trace = d[0].trace;
            if(Registry.traceIs(trace, 'pie')) {
                return hiddenSlices.indexOf(d[0].label) !== -1 ? 0.5 : 1;
            } else {
                return trace.visible === 'legendonly' ? 0.5 : 1;
            }
        })
        .each(function() {
            d3.select(this)
                .call(drawTexts, gd)
                .call(setupTraceToggle, gd);
        });

    var firstRender = legend.enter().size() !== 0;
    if(firstRender) {
        computeLegendDimensions(gd, groups, traces);
        expandMargin(gd);
    }

    // Position and size the legend
    var lxMin = 0,
        lxMax = fullLayout.width,
        lyMin = 0,
        lyMax = fullLayout.height;

    computeLegendDimensions(gd, groups, traces);

    if(opts.height > lyMax) {
        // If the legend doesn't fit in the plot area,
        // do not expand the vertical margins.
        expandHorizontalMargin(gd);
    } else {
        expandMargin(gd);
    }

    // Scroll section must be executed after repositionLegend.
    // It requires the legend width, height, x and y to position the scrollbox
    // and these values are mutated in repositionLegend.
    var gs = fullLayout._size,
        lx = gs.l + gs.w * opts.x,
        ly = gs.t + gs.h * (1 - opts.y);

    if(anchorUtils.isRightAnchor(opts)) {
        lx -= opts.width;
    }
    else if(anchorUtils.isCenterAnchor(opts)) {
        lx -= opts.width / 2;
    }

    if(anchorUtils.isBottomAnchor(opts)) {
        ly -= opts.height;
    }
    else if(anchorUtils.isMiddleAnchor(opts)) {
        ly -= opts.height / 2;
    }

    // Make sure the legend left and right sides are visible
    var legendWidth = opts.width,
        legendWidthMax = gs.w;

    if(legendWidth > legendWidthMax) {
        lx = gs.l;
        legendWidth = legendWidthMax;
    }
    else {
        if(lx + legendWidth > lxMax) lx = lxMax - legendWidth;
        if(lx < lxMin) lx = lxMin;
        legendWidth = Math.min(lxMax - lx, opts.width);
    }

    // Make sure the legend top and bottom are visible
    // (legends with a scroll bar are not allowed to stretch beyond the extended
    // margins)
    var legendHeight = opts.height,
        legendHeightMax = gs.h;

    if(legendHeight > legendHeightMax) {
        ly = gs.t;
        legendHeight = legendHeightMax;
    }
    else {
        if(ly + legendHeight > lyMax) ly = lyMax - legendHeight;
        if(ly < lyMin) ly = lyMin;
        legendHeight = Math.min(lyMax - ly, opts.height);
    }

    // Set size and position of all the elements that make up a legend:
    // legend, background and border, scroll box and scroll bar
    Drawing.setTranslate(legend, lx, ly);

    var scrollBarYMax = legendHeight -
            constants.scrollBarHeight -
            2 * constants.scrollBarMargin,
        scrollBoxYMax = opts.height - legendHeight,
        scrollBarY,
        scrollBoxY;

    if(opts.height <= legendHeight || gd._context.staticPlot) {
        // if scrollbar should not be shown.
        bg.attr({
            width: legendWidth - opts.borderwidth,
            height: legendHeight - opts.borderwidth,
            x: opts.borderwidth / 2,
            y: opts.borderwidth / 2
        });

        Drawing.setTranslate(scrollBox, 0, 0);

        clipPath.select('rect').attr({
            width: legendWidth - 2 * opts.borderwidth,
            height: legendHeight - 2 * opts.borderwidth,
            x: opts.borderwidth,
            y: opts.borderwidth
        });

        scrollBox.call(Drawing.setClipUrl, clipId);
    }
    else {
        scrollBarY = constants.scrollBarMargin,
        scrollBoxY = scrollBox.attr('data-scroll') || 0;

        // increase the background and clip-path width
        // by the scrollbar width and margin
        bg.attr({
            width: legendWidth -
                2 * opts.borderwidth +
                constants.scrollBarWidth +
                constants.scrollBarMargin,
            height: legendHeight - opts.borderwidth,
            x: opts.borderwidth / 2,
            y: opts.borderwidth / 2
        });

        clipPath.select('rect').attr({
            width: legendWidth -
                2 * opts.borderwidth +
                constants.scrollBarWidth +
                constants.scrollBarMargin,
            height: legendHeight - 2 * opts.borderwidth,
            x: opts.borderwidth,
            y: opts.borderwidth - scrollBoxY
        });

        scrollBox.call(Drawing.setClipUrl, clipId);

        if(firstRender) scrollHandler(scrollBarY, scrollBoxY);

        legend.on('wheel', null);  // to be safe, remove previous listeners
        legend.on('wheel', function() {
            scrollBoxY = Lib.constrain(
                scrollBox.attr('data-scroll') -
                    d3.event.deltaY / scrollBarYMax * scrollBoxYMax,
                -scrollBoxYMax, 0);
            scrollBarY = constants.scrollBarMargin -
                scrollBoxY / scrollBoxYMax * scrollBarYMax;
            scrollHandler(scrollBarY, scrollBoxY);
            if(scrollBoxY !== 0 && scrollBoxY !== -scrollBoxYMax) {
                d3.event.preventDefault();
            }
        });

        // to be safe, remove previous listeners
        scrollBar.on('.drag', null);
        scrollBox.on('.drag', null);

        var drag = d3.behavior.drag().on('drag', function() {
            scrollBarY = Lib.constrain(
                d3.event.y - constants.scrollBarHeight / 2,
                constants.scrollBarMargin,
                constants.scrollBarMargin + scrollBarYMax);
            scrollBoxY = - (scrollBarY - constants.scrollBarMargin) /
                scrollBarYMax * scrollBoxYMax;
            scrollHandler(scrollBarY, scrollBoxY);
        });

        scrollBar.call(drag);
        scrollBox.call(drag);
    }


    function scrollHandler(scrollBarY, scrollBoxY) {
        scrollBox
            .attr('data-scroll', scrollBoxY)
            .call(Drawing.setTranslate, 0, scrollBoxY);

        scrollBar.call(
            Drawing.setRect,
            legendWidth,
            scrollBarY,
            constants.scrollBarWidth,
            constants.scrollBarHeight
        );
        clipPath.select('rect').attr({
            y: opts.borderwidth - scrollBoxY
        });
    }

    if(gd._context.edits.legendPosition) {
        var xf, yf, x0, y0;

        legend.classed('cursor-move', true);

        dragElement.init({
            element: legend.node(),
            gd: gd,
            prepFn: function() {
                var transform = Drawing.getTranslate(legend);

                x0 = transform.x;
                y0 = transform.y;
            },
            moveFn: function(dx, dy) {
                var newX = x0 + dx,
                    newY = y0 + dy;

                Drawing.setTranslate(legend, newX, newY);

                xf = dragElement.align(newX, 0, gs.l, gs.l + gs.w, opts.xanchor);
                yf = dragElement.align(newY, 0, gs.t + gs.h, gs.t, opts.yanchor);
            },
            doneFn: function(dragged, numClicks, e) {
                if(dragged && xf !== undefined && yf !== undefined) {
                    Plotly.relayout(gd, {'legend.x': xf, 'legend.y': yf});
                } else {
                    var clickedTrace =
                        fullLayout._infolayer.selectAll('g.traces').filter(function() {
                            var bbox = this.getBoundingClientRect();
                            return (e.clientX >= bbox.left && e.clientX <= bbox.right &&
                                e.clientY >= bbox.top && e.clientY <= bbox.bottom);
                        });
                    if(clickedTrace.size() > 0) {
                        if(numClicks === 1) {
                            legend._clickTimeout = setTimeout(function() { handleClick(clickedTrace, gd, numClicks); }, DBLCLICKDELAY);
                        } else if(numClicks === 2) {
                            if(legend._clickTimeout) {
                                clearTimeout(legend._clickTimeout);
                            }
                            handleClick(clickedTrace, gd, numClicks);
                        }
                    }
                }
            }
        });
    }
};

function drawTexts(g, gd) {
    var legendItem = g.data()[0][0],
        fullLayout = gd._fullLayout,
        trace = legendItem.trace,
        isPie = Registry.traceIs(trace, 'pie'),
        traceIndex = trace.index,
        name = isPie ? legendItem.label : trace.name;

    var text = g.selectAll('text.legendtext')
        .data([0]);

    text.enter().append('text').classed('legendtext', true);

    text.attr('text-anchor', 'start')
        .classed('user-select-none', true)
        .call(Drawing.font, fullLayout.legend.font)
        .text(name);

    function textLayout(s) {
        svgTextUtils.convertToTspans(s, gd, function() {
            computeTextDimensions(g, gd);
        });
    }

    if(gd._context.edits.legendText && !isPie) {
        text.call(svgTextUtils.makeEditable, {gd: gd})
            .call(textLayout)
            .on('edit', function(text) {
                this.text(text)
                    .call(textLayout);

                var origText = text;

                if(!this.text()) text = ' \u0020\u0020 ';

                var transforms, direction;
                var fullInput = legendItem.trace._fullInput || {};
                var update = {};

                // N.B. this block isn't super clean,
                // is unfortunately untested at the moment,
                // and only works for for 'ohlc' and 'candlestick',
                // but should be generalized for other one-to-many transforms
                if(['ohlc', 'candlestick'].indexOf(fullInput.type) !== -1) {
                    transforms = legendItem.trace.transforms;
                    direction = transforms[transforms.length - 1].direction;

                    update[direction + '.name'] = text;
                } else if(Registry.hasTransform(fullInput, 'groupby')) {
                    var groupbyIndices = Registry.getTransformIndices(fullInput, 'groupby');
                    var index = groupbyIndices[groupbyIndices.length - 1];

                    var kcont = Lib.keyedContainer(fullInput, 'transforms[' + index + '].styles', 'target', 'value.name');

                    if(origText === '') {
                        kcont.remove(legendItem.trace._group);
                    } else {
                        kcont.set(legendItem.trace._group, text);
                    }

                    update = kcont.constructUpdate();
                } else {
                    update.name = text;
                }

                return Plotly.restyle(gd, update, traceIndex);
            });
    } else {
        text.call(textLayout);
    }
}

function setupTraceToggle(g, gd) {
    var newMouseDownTime,
        numClicks = 1;

    var traceToggle = g.selectAll('rect')
        .data([0]);

    traceToggle.enter().append('rect')
        .classed('legendtoggle', true)
        .style('cursor', 'pointer')
        .attr('pointer-events', 'all')
        .call(Color.fill, 'rgba(0,0,0,0)');


    traceToggle.on('mousedown', function() {
        newMouseDownTime = (new Date()).getTime();
        if(newMouseDownTime - gd._legendMouseDownTime < DBLCLICKDELAY) {
            // in a click train
            numClicks += 1;
        }
        else {
            // new click train
            numClicks = 1;
            gd._legendMouseDownTime = newMouseDownTime;
        }
    });
    traceToggle.on('mouseup', function() {
        if(gd._dragged || gd._editing) return;
        var legend = gd._fullLayout.legend;

        if((new Date()).getTime() - gd._legendMouseDownTime > DBLCLICKDELAY) {
            numClicks = Math.max(numClicks - 1, 1);
        }

        if(numClicks === 1) {
            legend._clickTimeout = setTimeout(function() { handleClick(g, gd, numClicks); }, DBLCLICKDELAY);
        } else if(numClicks === 2) {
            if(legend._clickTimeout) {
                clearTimeout(legend._clickTimeout);
            }
            gd._legendMouseDownTime = 0;
            handleClick(g, gd, numClicks);
        }
    });
}

function computeTextDimensions(g, gd) {
    var legendItem = g.data()[0][0];

    if(!legendItem.trace.showlegend) {
        g.remove();
        return;
    }

    var mathjaxGroup = g.select('g[class*=math-group]');
    var mathjaxNode = mathjaxGroup.node();
    var opts = gd._fullLayout.legend;
    var lineHeight = opts.font.size * LINE_SPACING;
    var height, width;

    if(mathjaxNode) {
        var mathjaxBB = Drawing.bBox(mathjaxNode);

        height = mathjaxBB.height;
        width = mathjaxBB.width;

        Drawing.setTranslate(mathjaxGroup, 0, (height / 4));
    }
    else {
        var text = g.select('.legendtext');
        var textLines = svgTextUtils.lineCount(text);
        var textNode = text.node();

        height = lineHeight * textLines;
        width = textNode ? Drawing.bBox(textNode).width : 0;

        // approximation to height offset to center the font
        // to avoid getBoundingClientRect
        var textY = lineHeight * (0.3 + (1 - textLines) / 2);
        // TODO: this 40 should go in a constants file (along with other
        // values related to the legend symbol size)
        svgTextUtils.positionText(text, 40, textY);
    }

    height = Math.max(height, 16) + 3;

    legendItem.height = height;
    legendItem.width = width;
}

function computeLegendDimensions(gd, groups, traces) {
    var fullLayout = gd._fullLayout;
    var opts = fullLayout.legend;
    var borderwidth = opts.borderwidth;
    var isGrouped = helpers.isGrouped(opts);

    var extraWidth = 0;

    opts.width = 0;
    opts.height = 0;

    if(helpers.isVertical(opts)) {
        if(isGrouped) {
            groups.each(function(d, i) {
                Drawing.setTranslate(this, 0, i * opts.tracegroupgap);
            });
        }

        traces.each(function(d) {
            var legendItem = d[0],
                textHeight = legendItem.height,
                textWidth = legendItem.width;

            Drawing.setTranslate(this,
                borderwidth,
                (5 + borderwidth + opts.height + textHeight / 2));

            opts.height += textHeight;
            opts.width = Math.max(opts.width, textWidth);
        });

        opts.width += 45 + borderwidth * 2;
        opts.height += 10 + borderwidth * 2;

        if(isGrouped) {
            opts.height += (opts._lgroupsLength - 1) * opts.tracegroupgap;
        }

        extraWidth = 40;
    }
    else if(isGrouped) {
        var groupXOffsets = [opts.width],
            groupData = groups.data();

        for(var i = 0, n = groupData.length; i < n; i++) {
            var textWidths = groupData[i].map(function(legendItemArray) {
                return legendItemArray[0].width;
            });

            var groupWidth = 40 + Math.max.apply(null, textWidths);

            opts.width += opts.tracegroupgap + groupWidth;

            groupXOffsets.push(opts.width);
        }

        groups.each(function(d, i) {
            Drawing.setTranslate(this, groupXOffsets[i], 0);
        });

        groups.each(function() {
            var group = d3.select(this),
                groupTraces = group.selectAll('g.traces'),
                groupHeight = 0;

            groupTraces.each(function(d) {
                var legendItem = d[0],
                    textHeight = legendItem.height;

                Drawing.setTranslate(this,
                    0,
                    (5 + borderwidth + groupHeight + textHeight / 2));

                groupHeight += textHeight;
            });

            opts.height = Math.max(opts.height, groupHeight);
        });

        opts.height += 10 + borderwidth * 2;
        opts.width += borderwidth * 2;
    }
    else {
        var rowHeight = 0,
            maxTraceHeight = 0,
            maxTraceWidth = 0,
            offsetX = 0;

        // calculate largest width for traces and use for width of all legend items
        traces.each(function(d) {
            maxTraceWidth = Math.max(40 + d[0].width, maxTraceWidth);
        });

        traces.each(function(d) {
            var legendItem = d[0],
                traceWidth = maxTraceWidth,
                traceGap = opts.tracegroupgap || 5;

            if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
                offsetX = 0;
                rowHeight = rowHeight + maxTraceHeight;
                opts.height = opts.height + maxTraceHeight;
                // reset for next row
                maxTraceHeight = 0;
            }

            Drawing.setTranslate(this,
                (borderwidth + offsetX),
                (5 + borderwidth + legendItem.height / 2) + rowHeight);

            opts.width += traceGap + traceWidth;
            opts.height = Math.max(opts.height, legendItem.height);

            // keep track of tallest trace in group
            offsetX += traceGap + traceWidth;
            maxTraceHeight = Math.max(legendItem.height, maxTraceHeight);
        });

        opts.width += borderwidth * 2;
        opts.height += 10 + borderwidth * 2;

    }

    // make sure we're only getting full pixels
    opts.width = Math.ceil(opts.width);
    opts.height = Math.ceil(opts.height);

    traces.each(function(d) {
        var legendItem = d[0],
            bg = d3.select(this).select('.legendtoggle');

        bg.call(Drawing.setRect,
            0,
            -legendItem.height / 2,
            (gd._context.edits.legendText ? 0 : opts.width) + extraWidth,
            legendItem.height
        );
    });
}

function expandMargin(gd) {
    var fullLayout = gd._fullLayout,
        opts = fullLayout.legend;

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(opts)) {
        xanchor = 'right';
    }
    else if(anchorUtils.isCenterAnchor(opts)) {
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(opts)) {
        yanchor = 'bottom';
    }
    else if(anchorUtils.isMiddleAnchor(opts)) {
        yanchor = 'middle';
    }

    // lastly check if the margin auto-expand has changed
    Plots.autoMargin(gd, 'legend', {
        x: opts.x,
        y: opts.y,
        l: opts.width * ({right: 1, center: 0.5}[xanchor] || 0),
        r: opts.width * ({left: 1, center: 0.5}[xanchor] || 0),
        b: opts.height * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: opts.height * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

function expandHorizontalMargin(gd) {
    var fullLayout = gd._fullLayout,
        opts = fullLayout.legend;

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(opts)) {
        xanchor = 'right';
    }
    else if(anchorUtils.isCenterAnchor(opts)) {
        xanchor = 'center';
    }

    // lastly check if the margin auto-expand has changed
    Plots.autoMargin(gd, 'legend', {
        x: opts.x,
        y: 0.5,
        l: opts.width * ({right: 1, center: 0.5}[xanchor] || 0),
        r: opts.width * ({left: 1, center: 0.5}[xanchor] || 0),
        b: 0,
        t: 0
    });
}

},{"../../constants/alignment":330,"../../constants/interactions":333,"../../lib":353,"../../lib/svg_text_utils":375,"../../plotly":391,"../../plots/plots":429,"../../registry":436,"../color":233,"../dragelement":254,"../drawing":257,"./anchor_utils":283,"./constants":285,"./get_legend_data":288,"./handle_click":289,"./helpers":290,"./style":292,"d3":62}],288:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var helpers = require('./helpers');


module.exports = function getLegendData(calcdata, opts) {
    var lgroupToTraces = {},
        lgroups = [],
        hasOneNonBlankGroup = false,
        slicesShown = {},
        lgroupi = 0;

    var i, j;

    function addOneItem(legendGroup, legendItem) {
        // each '' legend group is treated as a separate group
        if(legendGroup === '' || !helpers.isGrouped(opts)) {
            var uniqueGroup = '~~i' + lgroupi; // TODO: check this against fullData legendgroups?

            lgroups.push(uniqueGroup);
            lgroupToTraces[uniqueGroup] = [[legendItem]];
            lgroupi++;
        }
        else if(lgroups.indexOf(legendGroup) === -1) {
            lgroups.push(legendGroup);
            hasOneNonBlankGroup = true;
            lgroupToTraces[legendGroup] = [[legendItem]];
        }
        else lgroupToTraces[legendGroup].push([legendItem]);
    }

    // build an { legendgroup: [cd0, cd0], ... } object
    for(i = 0; i < calcdata.length; i++) {
        var cd = calcdata[i],
            cd0 = cd[0],
            trace = cd0.trace,
            lgroup = trace.legendgroup;

        if(!helpers.legendGetsTrace(trace) || !trace.showlegend) continue;

        if(Registry.traceIs(trace, 'pie')) {
            if(!slicesShown[lgroup]) slicesShown[lgroup] = {};

            for(j = 0; j < cd.length; j++) {
                var labelj = cd[j].label;

                if(!slicesShown[lgroup][labelj]) {
                    addOneItem(lgroup, {
                        label: labelj,
                        color: cd[j].color,
                        i: cd[j].i,
                        trace: trace
                    });

                    slicesShown[lgroup][labelj] = true;
                }
            }
        }

        else addOneItem(lgroup, cd0);
    }

    // won't draw a legend in this case
    if(!lgroups.length) return [];

    // rearrange lgroupToTraces into a d3-friendly array of arrays
    var lgroupsLength = lgroups.length,
        ltraces,
        legendData;

    if(hasOneNonBlankGroup && helpers.isGrouped(opts)) {
        legendData = new Array(lgroupsLength);

        for(i = 0; i < lgroupsLength; i++) {
            ltraces = lgroupToTraces[lgroups[i]];
            legendData[i] = helpers.isReversed(opts) ? ltraces.reverse() : ltraces;
        }
    }
    else {
        // collapse all groups into one if all groups are blank
        legendData = [new Array(lgroupsLength)];

        for(i = 0; i < lgroupsLength; i++) {
            ltraces = lgroupToTraces[lgroups[i]][0];
            legendData[0][helpers.isReversed(opts) ? lgroupsLength - i - 1 : i] = ltraces;
        }
        lgroupsLength = 1;
    }

    // needed in repositionLegend
    opts._lgroupsLength = lgroupsLength;
    return legendData;
};

},{"../../registry":436,"./helpers":290}],289:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Plotly = require('../../plotly');
var Lib = require('../../lib');
var Registry = require('../../registry');

var SHOWISOLATETIP = true;

module.exports = function handleClick(g, gd, numClicks) {
    if(gd._dragged || gd._editing) return;

    var hiddenSlices = gd._fullLayout.hiddenlabels ?
        gd._fullLayout.hiddenlabels.slice() :
        [];

    var legendItem = g.data()[0][0];
    var fullData = gd._fullData;
    var fullTrace = legendItem.trace;
    var legendgroup = fullTrace.legendgroup;

    var i, j, kcont, key, keys, val;
    var attrUpdate = {};
    var attrIndices = [];
    var carrs = [];
    var carrIdx = [];

    function insertUpdate(traceIndex, key, value) {
        var attrIndex = attrIndices.indexOf(traceIndex);
        var valueArray = attrUpdate[key];
        if(!valueArray) {
            valueArray = attrUpdate[key] = [];
        }

        if(attrIndices.indexOf(traceIndex) === -1) {
            attrIndices.push(traceIndex);
            attrIndex = attrIndices.length - 1;
        }

        valueArray[attrIndex] = value;

        return attrIndex;
    }

    function setVisibility(fullTrace, visibility) {
        var fullInput = fullTrace._fullInput;
        if(Registry.hasTransform(fullInput, 'groupby')) {
            var kcont = carrs[fullInput.index];
            if(!kcont) {
                var groupbyIndices = Registry.getTransformIndices(fullInput, 'groupby');
                var lastGroupbyIndex = groupbyIndices[groupbyIndices.length - 1];
                kcont = Lib.keyedContainer(fullInput, 'transforms[' + lastGroupbyIndex + '].styles', 'target', 'value.visible');
                carrs[fullInput.index] = kcont;
            }

            var curState = kcont.get(fullTrace._group);

            // If not specified, assume visible. This happens if there are other style
            // properties set for a group but not the visibility. There are many similar
            // ways to do this (e.g. why not just `curState = fullTrace.visible`??? The
            // answer is: because it breaks other things like groupby trace names in
            // subtle ways.)
            if(curState === undefined) {
                curState = true;
            }

            if(curState !== false) {
                // true -> legendonly. All others toggle to true:
                kcont.set(fullTrace._group, visibility);
            }
            carrIdx[fullInput.index] = insertUpdate(fullInput.index, 'visible', fullInput.visible === false ? false : true);
        } else {
            // false -> false (not possible since will not be visible in legend)
            // true -> legendonly
            // legendonly -> true
            var nextVisibility = fullInput.visible === false ? false : visibility;

            insertUpdate(fullInput.index, 'visible', nextVisibility);
        }
    }

    if(numClicks === 1 && SHOWISOLATETIP && gd.data && gd._context.showTips) {
        Lib.notifier('Double click on legend to isolate individual trace', 'long');
        SHOWISOLATETIP = false;
    } else {
        SHOWISOLATETIP = false;
    }

    if(Registry.traceIs(fullTrace, 'pie')) {
        var thisLabel = legendItem.label,
            thisLabelIndex = hiddenSlices.indexOf(thisLabel);

        if(numClicks === 1) {
            if(thisLabelIndex === -1) hiddenSlices.push(thisLabel);
            else hiddenSlices.splice(thisLabelIndex, 1);
        } else if(numClicks === 2) {
            hiddenSlices = [];
            gd.calcdata[0].forEach(function(d) {
                if(thisLabel !== d.label) {
                    hiddenSlices.push(d.label);
                }
            });
            if(gd._fullLayout.hiddenlabels && gd._fullLayout.hiddenlabels.length === hiddenSlices.length && thisLabelIndex === -1) {
                hiddenSlices = [];
            }
        }

        Plotly.relayout(gd, 'hiddenlabels', hiddenSlices);
    } else {
        var hasLegendgroup = legendgroup && legendgroup.length;
        var traceIndicesInGroup = [];
        var tracei;
        if(hasLegendgroup) {
            for(i = 0; i < fullData.length; i++) {
                tracei = fullData[i];
                if(!tracei.visible) continue;
                if(tracei.legendgroup === legendgroup) {
                    traceIndicesInGroup.push(i);
                }
            }
        }

        if(numClicks === 1) {
            var nextVisibility;

            switch(fullTrace.visible) {
                case true:
                    nextVisibility = 'legendonly';
                    break;
                case false:
                    nextVisibility = false;
                    break;
                case 'legendonly':
                    nextVisibility = true;
                    break;
            }

            if(hasLegendgroup) {
                for(i = 0; i < fullData.length; i++) {
                    if(fullData[i].visible !== false && fullData[i].legendgroup === legendgroup) {
                        setVisibility(fullData[i], nextVisibility);
                    }
                }
            } else {
                setVisibility(fullTrace, nextVisibility);
            }
        } else if(numClicks === 2) {
            // Compute the clicked index. expandedIndex does what we want for expanded traces
            // but also culls hidden traces. That means we have some work to do.
            var isClicked, isInGroup, otherState;
            var isIsolated = true;
            for(i = 0; i < fullData.length; i++) {
                isClicked = fullData[i] === fullTrace;
                if(isClicked) continue;

                isInGroup = (hasLegendgroup && fullData[i].legendgroup === legendgroup);

                if(!isInGroup && fullData[i].visible === true && !Registry.traceIs(fullData[i], 'notLegendIsolatable')) {
                    isIsolated = false;
                    break;
                }
            }

            for(i = 0; i < fullData.length; i++) {
                // False is sticky; we don't change it.
                if(fullData[i].visible === false) continue;

                if(Registry.traceIs(fullData[i], 'notLegendIsolatable')) {
                    continue;
                }

                switch(fullTrace.visible) {
                    case 'legendonly':
                        setVisibility(fullData[i], true);
                        break;
                    case true:
                        otherState = isIsolated ? true : 'legendonly';
                        isClicked = fullData[i] === fullTrace;
                        isInGroup = isClicked || (hasLegendgroup && fullData[i].legendgroup === legendgroup);
                        setVisibility(fullData[i], isInGroup ? true : otherState);
                        break;
                }
            }
        }

        for(i = 0; i < carrs.length; i++) {
            kcont = carrs[i];
            if(!kcont) continue;
            var update = kcont.constructUpdate();

            var updateKeys = Object.keys(update);
            for(j = 0; j < updateKeys.length; j++) {
                key = updateKeys[j];
                val = attrUpdate[key] = attrUpdate[key] || [];
                val[carrIdx[i]] = update[key];
            }
        }

        // The length of the value arrays should be equal and any unspecified
        // values should be explicitly undefined for them to get properly culled
        // as updates and not accidentally reset to the default value. This fills
        // out sparse arrays with the required number of undefined values:
        keys = Object.keys(attrUpdate);
        for(i = 0; i < keys.length; i++) {
            key = keys[i];
            for(j = 0; j < attrIndices.length; j++) {
                // Use hasOwnPropety to protect against falsey values:
                if(!attrUpdate[key].hasOwnProperty(j)) {
                    attrUpdate[key][j] = undefined;
                }
            }
        }

        Plotly.restyle(gd, attrUpdate, attrIndices);
    }
};

},{"../../lib":353,"../../plotly":391,"../../registry":436}],290:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');


exports.legendGetsTrace = function legendGetsTrace(trace) {
    return trace.visible && Registry.traceIs(trace, 'showLegend');
};

exports.isGrouped = function isGrouped(legendLayout) {
    return (legendLayout.traceorder || '').indexOf('grouped') !== -1;
};

exports.isVertical = function isVertical(legendLayout) {
    return legendLayout.orientation !== 'h';
};

exports.isReversed = function isReversed(legendLayout) {
    return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
};

},{"../../registry":436}],291:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    moduleType: 'component',
    name: 'legend',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    draw: require('./draw'),
    style: require('./style')
};

},{"./attributes":284,"./defaults":286,"./draw":287,"./style":292}],292:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Registry = require('../../registry');
var Lib = require('../../lib');
var Drawing = require('../drawing');
var Color = require('../color');

var subTypes = require('../../traces/scatter/subtypes');
var stylePie = require('../../traces/pie/style_one');


module.exports = function style(s, gd) {
    s.each(function(d) {
        var traceGroup = d3.select(this);

        var layers = traceGroup.selectAll('g.layers')
            .data([0]);
        layers.enter().append('g')
            .classed('layers', true);
        layers.style('opacity', d[0].trace.opacity);

        var fill = layers
            .selectAll('g.legendfill')
                .data([d]);
        fill.enter().append('g')
            .classed('legendfill', true);

        var line = layers
            .selectAll('g.legendlines')
                .data([d]);
        line.enter().append('g')
            .classed('legendlines', true);

        var symbol = layers
            .selectAll('g.legendsymbols')
                .data([d]);
        symbol.enter().append('g')
            .classed('legendsymbols', true);

        symbol.selectAll('g.legendpoints')
            .data([d])
          .enter().append('g')
            .classed('legendpoints', true);
    })
    .each(styleBars)
    .each(styleBoxes)
    .each(stylePies)
    .each(styleLines)
    .each(stylePoints);

    function styleLines(d) {
        var trace = d[0].trace,
            showFill = trace.visible && trace.fill && trace.fill !== 'none',
            showLine = subTypes.hasLines(trace);

        if(trace && trace._module && trace._module.name === 'contourcarpet') {
            showLine = trace.contours.showlines;
            showFill = trace.contours.coloring === 'fill';
        }

        var fill = d3.select(this).select('.legendfill').selectAll('path')
            .data(showFill ? [d] : []);
        fill.enter().append('path').classed('js-fill', true);
        fill.exit().remove();
        fill.attr('d', 'M5,0h30v6h-30z')
            .call(Drawing.fillGroupStyle);

        var line = d3.select(this).select('.legendlines').selectAll('path')
            .data(showLine ? [d] : []);
        line.enter().append('path').classed('js-line', true)
            .attr('d', 'M5,0h30');
        line.exit().remove();
        line.call(Drawing.lineGroupStyle);
    }

    function stylePoints(d) {
        var d0 = d[0],
            trace = d0.trace,
            showMarkers = subTypes.hasMarkers(trace),
            showText = subTypes.hasText(trace),
            showLines = subTypes.hasLines(trace);

        var dMod, tMod;

        // 'scatter3d' and 'scattergeo' don't use gd.calcdata yet;
        // use d0.trace to infer arrayOk attributes

        function boundVal(attrIn, arrayToValFn, bounds) {
            var valIn = Lib.nestedProperty(trace, attrIn).get(),
                valToBound = (Array.isArray(valIn) && arrayToValFn) ?
                    arrayToValFn(valIn) : valIn;

            if(bounds) {
                if(valToBound < bounds[0]) return bounds[0];
                else if(valToBound > bounds[1]) return bounds[1];
            }
            return valToBound;
        }

        function pickFirst(array) { return array[0]; }

        // constrain text, markers, etc so they'll fit on the legend
        if(showMarkers || showText || showLines) {
            var dEdit = {},
                tEdit = {};

            if(showMarkers) {
                dEdit.mc = boundVal('marker.color', pickFirst);
                dEdit.mo = boundVal('marker.opacity', Lib.mean, [0.2, 1]);
                dEdit.ms = boundVal('marker.size', Lib.mean, [2, 16]);
                dEdit.mlc = boundVal('marker.line.color', pickFirst);
                dEdit.mlw = boundVal('marker.line.width', Lib.mean, [0, 5]);
                tEdit.marker = {
                    sizeref: 1,
                    sizemin: 1,
                    sizemode: 'diameter'
                };
            }

            if(showLines) {
                tEdit.line = {
                    width: boundVal('line.width', pickFirst, [0, 10])
                };
            }

            if(showText) {
                dEdit.tx = 'Aa';
                dEdit.tp = boundVal('textposition', pickFirst);
                dEdit.ts = 10;
                dEdit.tc = boundVal('textfont.color', pickFirst);
                dEdit.tf = boundVal('textfont.family', pickFirst);
            }

            dMod = [Lib.minExtend(d0, dEdit)];
            tMod = Lib.minExtend(trace, tEdit);
        }

        var ptgroup = d3.select(this).select('g.legendpoints');

        var pts = ptgroup.selectAll('path.scatterpts')
            .data(showMarkers ? dMod : []);
        pts.enter().append('path').classed('scatterpts', true)
            .attr('transform', 'translate(20,0)');
        pts.exit().remove();
        pts.call(Drawing.pointStyle, tMod, gd);

        // 'mrc' is set in pointStyle and used in textPointStyle:
        // constrain it here
        if(showMarkers) dMod[0].mrc = 3;

        var txt = ptgroup.selectAll('g.pointtext')
            .data(showText ? dMod : []);
        txt.enter()
            .append('g').classed('pointtext', true)
                .append('text').attr('transform', 'translate(20,0)');
        txt.exit().remove();
        txt.selectAll('text').call(Drawing.textPointStyle, tMod, gd);
    }

    function styleBars(d) {
        var trace = d[0].trace,
            marker = trace.marker || {},
            markerLine = marker.line || {},
            barpath = d3.select(this).select('g.legendpoints')
                .selectAll('path.legendbar')
                .data(Registry.traceIs(trace, 'bar') ? [d] : []);
        barpath.enter().append('path').classed('legendbar', true)
            .attr('d', 'M6,6H-6V-6H6Z')
            .attr('transform', 'translate(20,0)');
        barpath.exit().remove();
        barpath.each(function(d) {
            var p = d3.select(this),
                d0 = d[0],
                w = (d0.mlw + 1 || markerLine.width + 1) - 1;

            p.style('stroke-width', w + 'px')
                .call(Color.fill, d0.mc || marker.color);

            if(w) {
                p.call(Color.stroke, d0.mlc || markerLine.color);
            }
        });
    }

    function styleBoxes(d) {
        var trace = d[0].trace,
            pts = d3.select(this).select('g.legendpoints')
                .selectAll('path.legendbox')
                .data(Registry.traceIs(trace, 'box') && trace.visible ? [d] : []);
        pts.enter().append('path').classed('legendbox', true)
            // if we want the median bar, prepend M6,0H-6
            .attr('d', 'M6,6H-6V-6H6Z')
            .attr('transform', 'translate(20,0)');
        pts.exit().remove();
        pts.each(function() {
            var w = trace.line.width,
                p = d3.select(this);

            p.style('stroke-width', w + 'px')
                .call(Color.fill, trace.fillcolor);

            if(w) {
                p.call(Color.stroke, trace.line.color);
            }
        });
    }

    function stylePies(d) {
        var trace = d[0].trace,
            pts = d3.select(this).select('g.legendpoints')
                .selectAll('path.legendpie')
                .data(Registry.traceIs(trace, 'pie') && trace.visible ? [d] : []);
        pts.enter().append('path').classed('legendpie', true)
            .attr('d', 'M6,6H-6V-6H6Z')
            .attr('transform', 'translate(20,0)');
        pts.exit().remove();

        if(pts.size()) pts.call(stylePie, d[0], trace);
    }
};

},{"../../lib":353,"../../registry":436,"../../traces/pie/style_one":485,"../../traces/scatter/subtypes":512,"../color":233,"../drawing":257,"d3":62}],293:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Axes = require('../../plots/cartesian/axes');
var Lib = require('../../lib');
var downloadImage = require('../../snapshot/download');
var Icons = require('../../../build/ploticon');


var modeBarButtons = module.exports = {};

/**
 * ModeBar buttons configuration
 *
 * @param {string} name
 *      name / id of the buttons (for tracking)
 * @param {string} title
 *      text that appears while hovering over the button,
 *      enter null, false or '' for no hover text
 * @param {string} icon
 *      svg icon object associated with the button
 *      can be linked to Plotly.Icons to use the default plotly icons
 * @param {string} [gravity]
 *      icon positioning
 * @param {function} click
 *      click handler associated with the button, a function of
 *      'gd' (the main graph object) and
 *      'ev' (the event object)
 * @param {string} [attr]
 *      attribute associated with button,
 *      use this with 'val' to keep track of the state
 * @param {*} [val]
 *      initial 'attr' value, can be a function of gd
 * @param {boolean} [toggle]
 *      is the button a toggle button?
 */

modeBarButtons.toImage = {
    name: 'toImage',
    title: 'Download plot as a png',
    icon: Icons.camera,
    click: function(gd) {
        var format = 'png';

        Lib.notifier('Taking snapshot - this may take a few seconds', 'long');

        if(Lib.isIE()) {
            Lib.notifier('IE only supports svg.  Changing format to svg.', 'long');
            format = 'svg';
        }

        downloadImage(gd, {'format': format})
          .then(function(filename) {
              Lib.notifier('Snapshot succeeded - ' + filename, 'long');
          })
          .catch(function() {
              Lib.notifier('Sorry there was a problem downloading your snapshot!', 'long');
          });
    }
};

modeBarButtons.sendDataToCloud = {
    name: 'sendDataToCloud',
    title: 'Save and edit plot in cloud',
    icon: Icons.disk,
    click: function(gd) {
        Plots.sendDataToCloud(gd);
    }
};

modeBarButtons.zoom2d = {
    name: 'zoom2d',
    title: 'Zoom',
    attr: 'dragmode',
    val: 'zoom',
    icon: Icons.zoombox,
    click: handleCartesian
};

modeBarButtons.pan2d = {
    name: 'pan2d',
    title: 'Pan',
    attr: 'dragmode',
    val: 'pan',
    icon: Icons.pan,
    click: handleCartesian
};

modeBarButtons.select2d = {
    name: 'select2d',
    title: 'Box Select',
    attr: 'dragmode',
    val: 'select',
    icon: Icons.selectbox,
    click: handleCartesian
};

modeBarButtons.lasso2d = {
    name: 'lasso2d',
    title: 'Lasso Select',
    attr: 'dragmode',
    val: 'lasso',
    icon: Icons.lasso,
    click: handleCartesian
};

modeBarButtons.zoomIn2d = {
    name: 'zoomIn2d',
    title: 'Zoom in',
    attr: 'zoom',
    val: 'in',
    icon: Icons.zoom_plus,
    click: handleCartesian
};

modeBarButtons.zoomOut2d = {
    name: 'zoomOut2d',
    title: 'Zoom out',
    attr: 'zoom',
    val: 'out',
    icon: Icons.zoom_minus,
    click: handleCartesian
};

modeBarButtons.autoScale2d = {
    name: 'autoScale2d',
    title: 'Autoscale',
    attr: 'zoom',
    val: 'auto',
    icon: Icons.autoscale,
    click: handleCartesian
};

modeBarButtons.resetScale2d = {
    name: 'resetScale2d',
    title: 'Reset axes',
    attr: 'zoom',
    val: 'reset',
    icon: Icons.home,
    click: handleCartesian
};

modeBarButtons.hoverClosestCartesian = {
    name: 'hoverClosestCartesian',
    title: 'Show closest data on hover',
    attr: 'hovermode',
    val: 'closest',
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: handleCartesian
};

modeBarButtons.hoverCompareCartesian = {
    name: 'hoverCompareCartesian',
    title: 'Compare data on hover',
    attr: 'hovermode',
    val: function(gd) {
        return gd._fullLayout._isHoriz ? 'y' : 'x';
    },
    icon: Icons.tooltip_compare,
    gravity: 'ne',
    click: handleCartesian
};

function handleCartesian(gd, ev) {
    var button = ev.currentTarget,
        astr = button.getAttribute('data-attr'),
        val = button.getAttribute('data-val') || true,
        fullLayout = gd._fullLayout,
        aobj = {},
        axList = Axes.list(gd, null, true),
        ax,
        allEnabled = 'on',
        i;

    if(astr === 'zoom') {
        var mag = (val === 'in') ? 0.5 : 2,
            r0 = (1 + mag) / 2,
            r1 = (1 - mag) / 2;

        var axName;

        for(i = 0; i < axList.length; i++) {
            ax = axList[i];

            if(!ax.fixedrange) {
                axName = ax._name;
                if(val === 'auto') aobj[axName + '.autorange'] = true;
                else if(val === 'reset') {
                    if(ax._rangeInitial === undefined) {
                        aobj[axName + '.autorange'] = true;
                    }
                    else {
                        var rangeInitial = ax._rangeInitial.slice();
                        aobj[axName + '.range[0]'] = rangeInitial[0];
                        aobj[axName + '.range[1]'] = rangeInitial[1];
                    }
                    if(ax._showSpikeInitial !== undefined) {
                        aobj[axName + '.showspikes'] = ax._showSpikeInitial;
                        if(allEnabled === 'on' && !ax._showSpikeInitial) {
                            allEnabled = 'off';
                        }
                    }
                }
                else {
                    var rangeNow = [
                        ax.r2l(ax.range[0]),
                        ax.r2l(ax.range[1]),
                    ];

                    var rangeNew = [
                        r0 * rangeNow[0] + r1 * rangeNow[1],
                        r0 * rangeNow[1] + r1 * rangeNow[0]
                    ];

                    aobj[axName + '.range[0]'] = ax.l2r(rangeNew[0]);
                    aobj[axName + '.range[1]'] = ax.l2r(rangeNew[1]);
                }
            }
        }
        fullLayout._cartesianSpikesEnabled = allEnabled;
    }
    else {
        // if ALL traces have orientation 'h', 'hovermode': 'x' otherwise: 'y'
        if(astr === 'hovermode' && (val === 'x' || val === 'y')) {
            val = fullLayout._isHoriz ? 'y' : 'x';
            button.setAttribute('data-val', val);
            if(val !== 'closest') {
                fullLayout._cartesianSpikesEnabled = 'off';
            }
        } else if(astr === 'hovermode' && val === 'closest') {
            for(i = 0; i < axList.length; i++) {
                ax = axList[i];
                if(allEnabled === 'on' && !ax.showspikes) {
                    allEnabled = 'off';
                }
            }
            fullLayout._cartesianSpikesEnabled = allEnabled;
        }

        aobj[astr] = val;
    }

    Plotly.relayout(gd, aobj);
}

modeBarButtons.zoom3d = {
    name: 'zoom3d',
    title: 'Zoom',
    attr: 'scene.dragmode',
    val: 'zoom',
    icon: Icons.zoombox,
    click: handleDrag3d
};

modeBarButtons.pan3d = {
    name: 'pan3d',
    title: 'Pan',
    attr: 'scene.dragmode',
    val: 'pan',
    icon: Icons.pan,
    click: handleDrag3d
};

modeBarButtons.orbitRotation = {
    name: 'orbitRotation',
    title: 'orbital rotation',
    attr: 'scene.dragmode',
    val: 'orbit',
    icon: Icons['3d_rotate'],
    click: handleDrag3d
};

modeBarButtons.tableRotation = {
    name: 'tableRotation',
    title: 'turntable rotation',
    attr: 'scene.dragmode',
    val: 'turntable',
    icon: Icons['z-axis'],
    click: handleDrag3d
};

function handleDrag3d(gd, ev) {
    var button = ev.currentTarget,
        attr = button.getAttribute('data-attr'),
        val = button.getAttribute('data-val') || true,
        fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d'),
        layoutUpdate = {};

    var parts = attr.split('.');

    for(var i = 0; i < sceneIds.length; i++) {
        layoutUpdate[sceneIds[i] + '.' + parts[1]] = val;
    }

    Plotly.relayout(gd, layoutUpdate);
}

modeBarButtons.resetCameraDefault3d = {
    name: 'resetCameraDefault3d',
    title: 'Reset camera to default',
    attr: 'resetDefault',
    icon: Icons.home,
    click: handleCamera3d
};

modeBarButtons.resetCameraLastSave3d = {
    name: 'resetCameraLastSave3d',
    title: 'Reset camera to last save',
    attr: 'resetLastSave',
    icon: Icons.movie,
    click: handleCamera3d
};

function handleCamera3d(gd, ev) {
    var button = ev.currentTarget,
        attr = button.getAttribute('data-attr'),
        fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d'),
        aobj = {};

    for(var i = 0; i < sceneIds.length; i++) {
        var sceneId = sceneIds[i],
            key = sceneId + '.camera',
            scene = fullLayout[sceneId]._scene;

        if(attr === 'resetDefault') {
            aobj[key] = null;
        }
        else if(attr === 'resetLastSave') {
            aobj[key] = Lib.extendDeep({}, scene.cameraInitial);
        }
    }

    Plotly.relayout(gd, aobj);
}

modeBarButtons.hoverClosest3d = {
    name: 'hoverClosest3d',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: handleHover3d
};

function handleHover3d(gd, ev) {
    var button = ev.currentTarget,
        val = button._previousVal || false,
        layout = gd.layout,
        fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d');

    var axes = ['xaxis', 'yaxis', 'zaxis'],
        spikeAttrs = ['showspikes', 'spikesides', 'spikethickness', 'spikecolor'];

    // initialize 'current spike' object to be stored in the DOM
    var currentSpikes = {},
        axisSpikes = {},
        layoutUpdate = {};

    if(val) {
        layoutUpdate = Lib.extendDeep(layout, val);
        button._previousVal = null;
    }
    else {
        layoutUpdate = {
            'allaxes.showspikes': false
        };

        for(var i = 0; i < sceneIds.length; i++) {
            var sceneId = sceneIds[i],
                sceneLayout = fullLayout[sceneId],
                sceneSpikes = currentSpikes[sceneId] = {};

            sceneSpikes.hovermode = sceneLayout.hovermode;
            layoutUpdate[sceneId + '.hovermode'] = false;

            // copy all the current spike attrs
            for(var j = 0; j < 3; j++) {
                var axis = axes[j];
                axisSpikes = sceneSpikes[axis] = {};

                for(var k = 0; k < spikeAttrs.length; k++) {
                    var spikeAttr = spikeAttrs[k];
                    axisSpikes[spikeAttr] = sceneLayout[axis][spikeAttr];
                }
            }
        }

        button._previousVal = Lib.extendDeep({}, currentSpikes);
    }

    Plotly.relayout(gd, layoutUpdate);
}

modeBarButtons.zoomInGeo = {
    name: 'zoomInGeo',
    title: 'Zoom in',
    attr: 'zoom',
    val: 'in',
    icon: Icons.zoom_plus,
    click: handleGeo
};

modeBarButtons.zoomOutGeo = {
    name: 'zoomOutGeo',
    title: 'Zoom out',
    attr: 'zoom',
    val: 'out',
    icon: Icons.zoom_minus,
    click: handleGeo
};

modeBarButtons.resetGeo = {
    name: 'resetGeo',
    title: 'Reset',
    attr: 'reset',
    val: null,
    icon: Icons.autoscale,
    click: handleGeo
};

modeBarButtons.hoverClosestGeo = {
    name: 'hoverClosestGeo',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: toggleHover
};

function handleGeo(gd, ev) {
    var button = ev.currentTarget;
    var attr = button.getAttribute('data-attr');
    var val = button.getAttribute('data-val') || true;
    var fullLayout = gd._fullLayout;
    var geoIds = Plots.getSubplotIds(fullLayout, 'geo');

    for(var i = 0; i < geoIds.length; i++) {
        var id = geoIds[i];
        var geoLayout = fullLayout[id];

        if(attr === 'zoom') {
            var scale = geoLayout.projection.scale;
            var newScale = (val === 'in') ? 2 * scale : 0.5 * scale;

            Plotly.relayout(gd, id + '.projection.scale', newScale);
        } else if(attr === 'reset') {
            resetView(gd, 'geo');
        }
    }
}

modeBarButtons.hoverClosestGl2d = {
    name: 'hoverClosestGl2d',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: toggleHover
};

modeBarButtons.hoverClosestPie = {
    name: 'hoverClosestPie',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: 'closest',
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: toggleHover
};

function toggleHover(gd) {
    var fullLayout = gd._fullLayout;

    var onHoverVal;
    if(fullLayout._has('cartesian')) {
        onHoverVal = fullLayout._isHoriz ? 'y' : 'x';
    }
    else onHoverVal = 'closest';

    var newHover = gd._fullLayout.hovermode ? false : onHoverVal;

    Plotly.relayout(gd, 'hovermode', newHover);
}

// buttons when more then one plot types are present

modeBarButtons.toggleHover = {
    name: 'toggleHover',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: function(gd, ev) {
        toggleHover(gd);

        // the 3d hovermode update must come
        // last so that layout.hovermode update does not
        // override scene?.hovermode?.layout.
        handleHover3d(gd, ev);
    }
};

modeBarButtons.resetViews = {
    name: 'resetViews',
    title: 'Reset views',
    icon: Icons.home,
    click: function(gd, ev) {
        var button = ev.currentTarget;

        button.setAttribute('data-attr', 'zoom');
        button.setAttribute('data-val', 'reset');
        handleCartesian(gd, ev);

        button.setAttribute('data-attr', 'resetLastSave');
        handleCamera3d(gd, ev);

        resetView(gd, 'geo');
        resetView(gd, 'mapbox');
    }
};

modeBarButtons.toggleSpikelines = {
    name: 'toggleSpikelines',
    title: 'Toggle Spike Lines',
    icon: Icons.spikeline,
    attr: '_cartesianSpikesEnabled',
    val: 'on',
    click: function(gd) {
        var fullLayout = gd._fullLayout;

        fullLayout._cartesianSpikesEnabled = fullLayout.hovermode === 'closest' ?
            (fullLayout._cartesianSpikesEnabled === 'on' ? 'off' : 'on') : 'on';

        var aobj = setSpikelineVisibility(gd);

        aobj.hovermode = 'closest';
        Plotly.relayout(gd, aobj);
    }
};

function setSpikelineVisibility(gd) {
    var fullLayout = gd._fullLayout,
        axList = Axes.list(gd, null, true),
        ax,
        axName,
        aobj = {};

    for(var i = 0; i < axList.length; i++) {
        ax = axList[i];
        axName = ax._name;
        aobj[axName + '.showspikes'] = fullLayout._cartesianSpikesEnabled === 'on' ? true : false;
    }

    return aobj;
}

modeBarButtons.resetViewMapbox = {
    name: 'resetViewMapbox',
    title: 'Reset view',
    attr: 'reset',
    icon: Icons.home,
    click: function(gd) {
        resetView(gd, 'mapbox');
    }
};

function resetView(gd, subplotType) {
    var fullLayout = gd._fullLayout;
    var subplotIds = Plots.getSubplotIds(fullLayout, subplotType);
    var aObj = {};

    for(var i = 0; i < subplotIds.length; i++) {
        var id = subplotIds[i];
        var subplotObj = fullLayout[id]._subplot;
        var viewInitial = subplotObj.viewInitial;
        var viewKeys = Object.keys(viewInitial);

        for(var j = 0; j < viewKeys.length; j++) {
            var key = viewKeys[j];
            aObj[id + '.' + key] = viewInitial[key];
        }
    }

    Plotly.relayout(gd, aObj);
}

},{"../../../build/ploticon":2,"../../lib":353,"../../plotly":391,"../../plots/cartesian/axes":396,"../../plots/plots":429,"../../snapshot/download":438}],294:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.manage = require('./manage');

},{"./manage":295}],295:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Axes = require('../../plots/cartesian/axes');
var scatterSubTypes = require('../../traces/scatter/subtypes');
var Registry = require('../../registry');

var createModeBar = require('./modebar');
var modeBarButtons = require('./buttons');

/**
 * ModeBar wrapper around 'create' and 'update',
 * chooses buttons to pass to ModeBar constructor based on
 * plot type and plot config.
 *
 * @param {object} gd main plot object
 *
 */
module.exports = function manageModeBar(gd) {
    var fullLayout = gd._fullLayout,
        context = gd._context,
        modeBar = fullLayout._modeBar;

    if(!context.displayModeBar) {
        if(modeBar) {
            modeBar.destroy();
            delete fullLayout._modeBar;
        }
        return;
    }

    if(!Array.isArray(context.modeBarButtonsToRemove)) {
        throw new Error([
            '*modeBarButtonsToRemove* configuration options',
            'must be an array.'
        ].join(' '));
    }

    if(!Array.isArray(context.modeBarButtonsToAdd)) {
        throw new Error([
            '*modeBarButtonsToAdd* configuration options',
            'must be an array.'
        ].join(' '));
    }

    var customButtons = context.modeBarButtons;
    var buttonGroups;

    if(Array.isArray(customButtons) && customButtons.length) {
        buttonGroups = fillCustomButton(customButtons);
    }
    else {
        buttonGroups = getButtonGroups(
            gd,
            context.modeBarButtonsToRemove,
            context.modeBarButtonsToAdd
        );
    }

    if(modeBar) modeBar.update(gd, buttonGroups);
    else fullLayout._modeBar = createModeBar(gd, buttonGroups);
};

// logic behind which buttons are displayed by default
function getButtonGroups(gd, buttonsToRemove, buttonsToAdd) {
    var fullLayout = gd._fullLayout;
    var fullData = gd._fullData;

    var hasCartesian = fullLayout._has('cartesian');
    var hasGL3D = fullLayout._has('gl3d');
    var hasGeo = fullLayout._has('geo');
    var hasPie = fullLayout._has('pie');
    var hasGL2D = fullLayout._has('gl2d');
    var hasTernary = fullLayout._has('ternary');
    var hasMapbox = fullLayout._has('mapbox');

    var groups = [];

    function addGroup(newGroup) {
        var out = [];

        for(var i = 0; i < newGroup.length; i++) {
            var button = newGroup[i];
            if(buttonsToRemove.indexOf(button) !== -1) continue;
            out.push(modeBarButtons[button]);
        }

        groups.push(out);
    }

    // buttons common to all plot types
    addGroup(['toImage', 'sendDataToCloud']);

    // graphs with more than one plot types get 'union buttons'
    // which reset the view or toggle hover labels across all subplots.
    if((hasCartesian || hasGL2D || hasPie || hasTernary) + hasGeo + hasGL3D > 1) {
        addGroup(['resetViews', 'toggleHover']);
        return appendButtonsToGroups(groups, buttonsToAdd);
    }

    if(hasGL3D) {
        addGroup(['zoom3d', 'pan3d', 'orbitRotation', 'tableRotation']);
        addGroup(['resetCameraDefault3d', 'resetCameraLastSave3d']);
        addGroup(['hoverClosest3d']);
    }

    var allAxesFixed = areAllAxesFixed(fullLayout),
        dragModeGroup = [];

    if(((hasCartesian || hasGL2D) && !allAxesFixed) || hasTernary) {
        dragModeGroup = ['zoom2d', 'pan2d'];
    }
    if(hasMapbox || hasGeo) {
        dragModeGroup = ['pan2d'];
    }
    if(isSelectable(fullData)) {
        dragModeGroup.push('select2d');
        dragModeGroup.push('lasso2d');
    }
    if(dragModeGroup.length) addGroup(dragModeGroup);

    if((hasCartesian || hasGL2D) && !allAxesFixed && !hasTernary) {
        addGroup(['zoomIn2d', 'zoomOut2d', 'autoScale2d', 'resetScale2d']);
    }

    if(hasCartesian && hasPie) {
        addGroup(['toggleHover']);
    } else if(hasGL2D) {
        addGroup(['hoverClosestGl2d']);
    } else if(hasCartesian) {
        addGroup(['toggleSpikelines', 'hoverClosestCartesian', 'hoverCompareCartesian']);
    } else if(hasPie) {
        addGroup(['hoverClosestPie']);
    } else if(hasMapbox) {
        addGroup(['resetViewMapbox', 'toggleHover']);
    } else if(hasGeo) {
        addGroup(['zoomInGeo', 'zoomOutGeo', 'resetGeo']);
        addGroup(['hoverClosestGeo']);
    }

    return appendButtonsToGroups(groups, buttonsToAdd);
}

function areAllAxesFixed(fullLayout) {
    var axList = Axes.list({_fullLayout: fullLayout}, null, true);
    var allFixed = true;

    for(var i = 0; i < axList.length; i++) {
        if(!axList[i].fixedrange) {
            allFixed = false;
            break;
        }
    }

    return allFixed;
}

// look for traces that support selection
// to be updated as we add more selectPoints handlers
function isSelectable(fullData) {
    var selectable = false;

    for(var i = 0; i < fullData.length; i++) {
        if(selectable) break;

        var trace = fullData[i];

        if(!trace._module || !trace._module.selectPoints) continue;

        if(Registry.traceIs(trace, 'scatter-like')) {
            if(scatterSubTypes.hasMarkers(trace) || scatterSubTypes.hasText(trace)) {
                selectable = true;
            }
        }
        // assume that in general if the trace module has selectPoints,
        // then it's selectable. Scatter is an exception to this because it must
        // have markers or text, not just be a scatter type.
        else selectable = true;
    }

    return selectable;
}

function appendButtonsToGroups(groups, buttons) {
    if(buttons.length) {
        if(Array.isArray(buttons[0])) {
            for(var i = 0; i < buttons.length; i++) {
                groups.push(buttons[i]);
            }
        }
        else groups.push(buttons);
    }

    return groups;
}

// fill in custom buttons referring to default mode bar buttons
function fillCustomButton(customButtons) {
    for(var i = 0; i < customButtons.length; i++) {
        var buttonGroup = customButtons[i];

        for(var j = 0; j < buttonGroup.length; j++) {
            var button = buttonGroup[j];

            if(typeof button === 'string') {
                if(modeBarButtons[button] !== undefined) {
                    customButtons[i][j] = modeBarButtons[button];
                }
                else {
                    throw new Error([
                        '*modeBarButtons* configuration options',
                        'invalid button name'
                    ].join(' '));
                }
            }
        }
    }

    return customButtons;
}

},{"../../plots/cartesian/axes":396,"../../registry":436,"../../traces/scatter/subtypes":512,"./buttons":293,"./modebar":296}],296:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Lib = require('../../lib');
var Icons = require('../../../build/ploticon');


/**
 * UI controller for interactive plots
 * @Class
 * @Param {object} opts
 * @Param {object} opts.buttons    nested arrays of grouped buttons config objects
 * @Param {object} opts.container  container div to append modeBar
 * @Param {object} opts.graphInfo  primary plot object containing data and layout
 */
function ModeBar(opts) {
    this.container = opts.container;
    this.element = document.createElement('div');

    this.update(opts.graphInfo, opts.buttons);

    this.container.appendChild(this.element);
}

var proto = ModeBar.prototype;

/**
 * Update modeBar (buttons and logo)
 *
 * @param {object} graphInfo  primary plot object containing data and layout
 * @param {array of arrays} buttons nested arrays of grouped buttons to initialize
 *
 */
proto.update = function(graphInfo, buttons) {
    this.graphInfo = graphInfo;

    var context = this.graphInfo._context;

    if(context.displayModeBar === 'hover') {
        this.element.className = 'modebar modebar--hover';
    }
    else this.element.className = 'modebar';

    // if buttons or logo have changed, redraw modebar interior
    var needsNewButtons = !this.hasButtons(buttons),
        needsNewLogo = (this.hasLogo !== context.displaylogo);

    if(needsNewButtons || needsNewLogo) {
        this.removeAllButtons();

        this.updateButtons(buttons);

        if(context.displaylogo) {
            this.element.appendChild(this.getLogo());
            this.hasLogo = true;
        }
    }

    this.updateActiveButton();
};

proto.updateButtons = function(buttons) {
    var _this = this;

    this.buttons = buttons;
    this.buttonElements = [];
    this.buttonsNames = [];

    this.buttons.forEach(function(buttonGroup) {
        var group = _this.createGroup();

        buttonGroup.forEach(function(buttonConfig) {
            var buttonName = buttonConfig.name;
            if(!buttonName) {
                throw new Error('must provide button \'name\' in button config');
            }
            if(_this.buttonsNames.indexOf(buttonName) !== -1) {
                throw new Error('button name \'' + buttonName + '\' is taken');
            }
            _this.buttonsNames.push(buttonName);

            var button = _this.createButton(buttonConfig);
            _this.buttonElements.push(button);
            group.appendChild(button);
        });

        _this.element.appendChild(group);
    });
};

/**
 * Empty div for containing a group of buttons
 * @Return {HTMLelement}
 */
proto.createGroup = function() {
    var group = document.createElement('div');
    group.className = 'modebar-group';

    return group;
};

/**
 * Create a new button div and set constant and configurable attributes
 * @Param {object} config (see ./buttons.js for more info)
 * @Return {HTMLelement}
 */
proto.createButton = function(config) {
    var _this = this,
        button = document.createElement('a');

    button.setAttribute('rel', 'tooltip');
    button.className = 'modebar-btn';

    var title = config.title;
    if(title === undefined) title = config.name;
    if(title || title === 0) button.setAttribute('data-title', title);

    if(config.attr !== undefined) button.setAttribute('data-attr', config.attr);

    var val = config.val;
    if(val !== undefined) {
        if(typeof val === 'function') val = val(this.graphInfo);
        button.setAttribute('data-val', val);
    }

    var click = config.click;
    if(typeof click !== 'function') {
        throw new Error('must provide button \'click\' function in button config');
    }
    else {
        button.addEventListener('click', function(ev) {
            config.click(_this.graphInfo, ev);

            // only needed for 'hoverClosestGeo' which does not call relayout
            _this.updateActiveButton(ev.currentTarget);
        });
    }

    button.setAttribute('data-toggle', config.toggle || false);
    if(config.toggle) d3.select(button).classed('active', true);

    button.appendChild(this.createIcon(config.icon || Icons.question, config.name));
    button.setAttribute('data-gravity', config.gravity || 'n');

    return button;
};

/**
 * Add an icon to a button
 * @Param {object} thisIcon
 * @Param {number} thisIcon.width
 * @Param {string} thisIcon.path
 * @Return {HTMLelement}
 */
proto.createIcon = function(thisIcon, name) {
    var iconHeight = thisIcon.ascent - thisIcon.descent,
        svgNS = 'http://www.w3.org/2000/svg',
        icon = document.createElementNS(svgNS, 'svg'),
        path = document.createElementNS(svgNS, 'path');

    icon.setAttribute('height', '1em');
    icon.setAttribute('width', (thisIcon.width / iconHeight) + 'em');
    icon.setAttribute('viewBox', [0, 0, thisIcon.width, iconHeight].join(' '));

    var transform = name === 'toggleSpikelines' ?
        'matrix(1.5 0 0 -1.5 0 ' + thisIcon.ascent + ')' :
        'matrix(1 0 0 -1 0 ' + thisIcon.ascent + ')';

    path.setAttribute('d', thisIcon.path);
    path.setAttribute('transform', transform);
    icon.appendChild(path);

    return icon;
};

/**
 * Updates active button with attribute specified in layout
 * @Param {object} graphInfo plot object containing data and layout
 * @Return {HTMLelement}
 */
proto.updateActiveButton = function(buttonClicked) {
    var fullLayout = this.graphInfo._fullLayout,
        dataAttrClicked = (buttonClicked !== undefined) ?
            buttonClicked.getAttribute('data-attr') :
            null;

    this.buttonElements.forEach(function(button) {
        var thisval = button.getAttribute('data-val') || true,
            dataAttr = button.getAttribute('data-attr'),
            isToggleButton = (button.getAttribute('data-toggle') === 'true'),
            button3 = d3.select(button);

        // Use 'data-toggle' and 'buttonClicked' to toggle buttons
        // that have no one-to-one equivalent in fullLayout
        if(isToggleButton) {
            if(dataAttr === dataAttrClicked) {
                button3.classed('active', !button3.classed('active'));
            }
        }
        else {
            var val = (dataAttr === null) ?
                dataAttr :
                Lib.nestedProperty(fullLayout, dataAttr).get();

            button3.classed('active', val === thisval);
        }

    });
};

/**
 * Check if modeBar is configured as button configuration argument
 *
 * @Param {object} buttons 2d array of grouped button config objects
 * @Return {boolean}
 */
proto.hasButtons = function(buttons) {
    var currentButtons = this.buttons;

    if(!currentButtons) return false;

    if(buttons.length !== currentButtons.length) return false;

    for(var i = 0; i < buttons.length; ++i) {
        if(buttons[i].length !== currentButtons[i].length) return false;
        for(var j = 0; j < buttons[i].length; j++) {
            if(buttons[i][j].name !== currentButtons[i][j].name) return false;
        }
    }

    return true;
};

/**
 * @return {HTMLDivElement} The logo image wrapped in a group
 */
proto.getLogo = function() {
    var group = this.createGroup(),
        a = document.createElement('a');

    a.href = 'https://plot.ly/';
    a.target = '_blank';
    a.setAttribute('data-title', 'Produced with Plotly');
    a.className = 'modebar-btn plotlyjsicon modebar-btn--logo';

    a.appendChild(this.createIcon(Icons.plotlylogo));

    group.appendChild(a);
    return group;
};

proto.removeAllButtons = function() {
    while(this.element.firstChild) {
        this.element.removeChild(this.element.firstChild);
    }

    this.hasLogo = false;
};

proto.destroy = function() {
    Lib.removeElement(this.container.querySelector('.modebar'));
};

function createModeBar(gd, buttons) {
    var fullLayout = gd._fullLayout;

    var modeBar = new ModeBar({
        graphInfo: gd,
        container: fullLayout._paperdiv.node(),
        buttons: buttons
    });

    if(fullLayout._privateplot) {
        d3.select(modeBar.element).append('span')
            .classed('badge-private float--left', true)
            .text('PRIVATE');
    }

    return modeBar;
}

module.exports = createModeBar;

},{"../../../build/ploticon":2,"../../lib":353,"d3":62}],297:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var colorAttrs = require('../color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var buttonAttrs = require('./button_attributes');

buttonAttrs = extendFlat(buttonAttrs, {
    _isLinkedToArray: 'button',

    
});

module.exports = {
    visible: {
        valType: 'boolean',
        
        editType: 'plot',
        
    },

    buttons: buttonAttrs,

    x: {
        valType: 'number',
        min: -2,
        max: 3,
        
        editType: 'plot',
        
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'left',
        
        editType: 'plot',
        
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        
        editType: 'plot',
        
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'bottom',
        
        editType: 'plot',
        
    },

    font: fontAttrs({
        editType: 'plot',
        
    }),

    bgcolor: {
        valType: 'color',
        dflt: colorAttrs.lightLine,
        
        editType: 'plot',
        
    },
    activecolor: {
        valType: 'color',
        
        editType: 'plot',
        
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        
        editType: 'plot',
        
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 0,
        
        editType: 'plot',
        
    },
    editType: 'plot'
};

},{"../../lib/extend":344,"../../plots/font_attributes":420,"../color/attributes":232,"./button_attributes":298}],298:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    step: {
        valType: 'enumerated',
        
        values: ['month', 'year', 'day', 'hour', 'minute', 'second', 'all'],
        dflt: 'month',
        editType: 'plot',
        
    },
    stepmode: {
        valType: 'enumerated',
        
        values: ['backward', 'todate'],
        dflt: 'backward',
        editType: 'plot',
        
    },
    count: {
        valType: 'number',
        
        min: 0,
        dflt: 1,
        editType: 'plot',
        
    },
    label: {
        valType: 'string',
        
        editType: 'plot',
        
    },
    editType: 'plot'
};

},{}],299:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {

    // 'y' position pad above counter axis domain
    yPad: 0.02,

    // minimum button width (regardless of text size)
    minButtonWidth: 30,

    // buttons rect radii
    rx: 3,
    ry: 3,

    // light fraction used to compute the 'activecolor' default
    lightAmount: 25,
    darkAmount: 10
};

},{}],300:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Color = require('../color');

var attributes = require('./attributes');
var buttonAttrs = require('./button_attributes');
var constants = require('./constants');


module.exports = function handleDefaults(containerIn, containerOut, layout, counterAxes, calendar) {
    var selectorIn = containerIn.rangeselector || {},
        selectorOut = containerOut.rangeselector = {};

    function coerce(attr, dflt) {
        return Lib.coerce(selectorIn, selectorOut, attributes, attr, dflt);
    }

    var buttons = buttonsDefaults(selectorIn, selectorOut, calendar);

    var visible = coerce('visible', buttons.length > 0);
    if(!visible) return;

    var posDflt = getPosDflt(containerOut, layout, counterAxes);
    coerce('x', posDflt[0]);
    coerce('y', posDflt[1]);
    Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);

    coerce('xanchor');
    coerce('yanchor');

    Lib.coerceFont(coerce, 'font', layout.font);

    var bgColor = coerce('bgcolor');
    coerce('activecolor', Color.contrast(bgColor, constants.lightAmount, constants.darkAmount));
    coerce('bordercolor');
    coerce('borderwidth');
};

function buttonsDefaults(containerIn, containerOut, calendar) {
    var buttonsIn = containerIn.buttons || [],
        buttonsOut = containerOut.buttons = [];

    var buttonIn, buttonOut;

    function coerce(attr, dflt) {
        return Lib.coerce(buttonIn, buttonOut, buttonAttrs, attr, dflt);
    }

    for(var i = 0; i < buttonsIn.length; i++) {
        buttonIn = buttonsIn[i];
        buttonOut = {};

        if(!Lib.isPlainObject(buttonIn)) continue;

        var step = coerce('step');
        if(step !== 'all') {
            if(calendar && calendar !== 'gregorian' && (step === 'month' || step === 'year')) {
                buttonOut.stepmode = 'backward';
            }
            else {
                coerce('stepmode');
            }

            coerce('count');
        }

        coerce('label');

        buttonOut._index = i;
        buttonsOut.push(buttonOut);
    }

    return buttonsOut;
}

function getPosDflt(containerOut, layout, counterAxes) {
    var anchoredList = counterAxes.filter(function(ax) {
        return layout[ax].anchor === containerOut._id;
    });

    var posY = 0;
    for(var i = 0; i < anchoredList.length; i++) {
        var domain = layout[anchoredList[i]].domain;
        if(domain) posY = Math.max(domain[1], posY);
    }

    return [containerOut.domain[0], posY + constants.yPad];
}

},{"../../lib":353,"../color":233,"./attributes":297,"./button_attributes":298,"./constants":299}],301:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var axisIds = require('../../plots/cartesian/axis_ids');
var anchorUtils = require('../legend/anchor_utils');

var LINE_SPACING = require('../../constants/alignment').LINE_SPACING;

var constants = require('./constants');
var getUpdateObject = require('./get_update_object');


module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout;

    var selectors = fullLayout._infolayer.selectAll('.rangeselector')
        .data(makeSelectorData(gd), selectorKeyFunc);

    selectors.enter().append('g')
        .classed('rangeselector', true);

    selectors.exit().remove();

    selectors.style({
        cursor: 'pointer',
        'pointer-events': 'all'
    });

    selectors.each(function(d) {
        var selector = d3.select(this),
            axisLayout = d,
            selectorLayout = axisLayout.rangeselector;

        var buttons = selector.selectAll('g.button')
            .data(selectorLayout.buttons);

        buttons.enter().append('g')
            .classed('button', true);

        buttons.exit().remove();

        buttons.each(function(d) {
            var button = d3.select(this);
            var update = getUpdateObject(axisLayout, d);

            d.isActive = isActive(axisLayout, d, update);

            button.call(drawButtonRect, selectorLayout, d);
            button.call(drawButtonText, selectorLayout, d, gd);

            button.on('click', function() {
                if(gd._dragged) return;

                Plotly.relayout(gd, update);
            });

            button.on('mouseover', function() {
                d.isHovered = true;
                button.call(drawButtonRect, selectorLayout, d);
            });

            button.on('mouseout', function() {
                d.isHovered = false;
                button.call(drawButtonRect, selectorLayout, d);
            });
        });

        // N.B. this mutates selectorLayout
        reposition(gd, buttons, selectorLayout, axisLayout._name);

        selector.attr('transform', 'translate(' +
            selectorLayout.lx + ',' + selectorLayout.ly +
        ')');
    });

};

function makeSelectorData(gd) {
    var axes = axisIds.list(gd, 'x', true);
    var data = [];

    for(var i = 0; i < axes.length; i++) {
        var axis = axes[i];

        if(axis.rangeselector && axis.rangeselector.visible) {
            data.push(axis);
        }
    }

    return data;
}

function selectorKeyFunc(d) {
    return d._id;
}

function isActive(axisLayout, opts, update) {
    if(opts.step === 'all') {
        return axisLayout.autorange === true;
    }
    else {
        var keys = Object.keys(update);

        return (
            axisLayout.range[0] === update[keys[0]] &&
            axisLayout.range[1] === update[keys[1]]
        );
    }
}

function drawButtonRect(button, selectorLayout, d) {
    var rect = button.selectAll('rect')
        .data([0]);

    rect.enter().append('rect')
        .classed('selector-rect', true);

    rect.attr('shape-rendering', 'crispEdges');

    rect.attr({
        'rx': constants.rx,
        'ry': constants.ry
    });

    rect.call(Color.stroke, selectorLayout.bordercolor)
        .call(Color.fill, getFillColor(selectorLayout, d))
        .style('stroke-width', selectorLayout.borderwidth + 'px');
}

function getFillColor(selectorLayout, d) {
    return (d.isActive || d.isHovered) ?
        selectorLayout.activecolor :
        selectorLayout.bgcolor;
}

function drawButtonText(button, selectorLayout, d, gd) {
    function textLayout(s) {
        svgTextUtils.convertToTspans(s, gd);
    }

    var text = button.selectAll('text')
        .data([0]);

    text.enter().append('text')
        .classed('selector-text', true)
        .classed('user-select-none', true);

    text.attr('text-anchor', 'middle');

    text.call(Drawing.font, selectorLayout.font)
        .text(getLabel(d))
        .call(textLayout);
}

function getLabel(opts) {
    if(opts.label) return opts.label;

    if(opts.step === 'all') return 'all';

    return opts.count + opts.step.charAt(0);
}

function reposition(gd, buttons, opts, axName) {
    opts.width = 0;
    opts.height = 0;

    var borderWidth = opts.borderwidth;

    buttons.each(function() {
        var button = d3.select(this);
        var text = button.select('.selector-text');

        var tHeight = opts.font.size * LINE_SPACING;
        var hEff = Math.max(tHeight * svgTextUtils.lineCount(text), 16) + 3;

        opts.height = Math.max(opts.height, hEff);
    });

    buttons.each(function() {
        var button = d3.select(this);
        var rect = button.select('.selector-rect');
        var text = button.select('.selector-text');

        var tWidth = text.node() && Drawing.bBox(text.node()).width;
        var tHeight = opts.font.size * LINE_SPACING;
        var tLines = svgTextUtils.lineCount(text);

        var wEff = Math.max(tWidth + 10, constants.minButtonWidth);

        // TODO add MathJax support

        // TODO add buttongap attribute

        button.attr('transform', 'translate(' +
            (borderWidth + opts.width) + ',' + borderWidth +
        ')');

        rect.attr({
            x: 0,
            y: 0,
            width: wEff,
            height: opts.height
        });

        svgTextUtils.positionText(text, wEff / 2,
            opts.height / 2 - ((tLines - 1) * tHeight / 2) + 3);

        opts.width += wEff + 5;
    });

    buttons.selectAll('rect').attr('height', opts.height);

    var graphSize = gd._fullLayout._size;
    opts.lx = graphSize.l + graphSize.w * opts.x;
    opts.ly = graphSize.t + graphSize.h * (1 - opts.y);

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(opts)) {
        opts.lx -= opts.width;
        xanchor = 'right';
    }
    if(anchorUtils.isCenterAnchor(opts)) {
        opts.lx -= opts.width / 2;
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(opts)) {
        opts.ly -= opts.height;
        yanchor = 'bottom';
    }
    if(anchorUtils.isMiddleAnchor(opts)) {
        opts.ly -= opts.height / 2;
        yanchor = 'middle';
    }

    opts.width = Math.ceil(opts.width);
    opts.height = Math.ceil(opts.height);
    opts.lx = Math.round(opts.lx);
    opts.ly = Math.round(opts.ly);

    Plots.autoMargin(gd, axName + '-range-selector', {
        x: opts.x,
        y: opts.y,
        l: opts.width * ({right: 1, center: 0.5}[xanchor] || 0),
        r: opts.width * ({left: 1, center: 0.5}[xanchor] || 0),
        b: opts.height * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: opts.height * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

},{"../../constants/alignment":330,"../../lib/svg_text_utils":375,"../../plotly":391,"../../plots/cartesian/axis_ids":399,"../../plots/plots":429,"../color":233,"../drawing":257,"../legend/anchor_utils":283,"./constants":299,"./get_update_object":302,"d3":62}],302:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

module.exports = function getUpdateObject(axisLayout, buttonLayout) {
    var axName = axisLayout._name;
    var update = {};

    if(buttonLayout.step === 'all') {
        update[axName + '.autorange'] = true;
    }
    else {
        var xrange = getXRange(axisLayout, buttonLayout);

        update[axName + '.range[0]'] = xrange[0];
        update[axName + '.range[1]'] = xrange[1];
    }

    return update;
};

function getXRange(axisLayout, buttonLayout) {
    var currentRange = axisLayout.range;
    var base = new Date(axisLayout.r2l(currentRange[1]));

    var step = buttonLayout.step,
        count = buttonLayout.count;

    var range0;

    switch(buttonLayout.stepmode) {
        case 'backward':
            range0 = axisLayout.l2r(+d3.time[step].utc.offset(base, -count));
            break;

        case 'todate':
            var base2 = d3.time[step].utc.offset(base, -count);

            range0 = axisLayout.l2r(+d3.time[step].utc.ceil(base2));
            break;
    }

    var range1 = currentRange[1];

    return [range0, range1];
}

},{"d3":62}],303:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'rangeselector',

    schema: {
        subplots: {
            xaxis: {rangeselector: require('./attributes')}
        }
    },

    layoutAttributes: require('./attributes'),
    handleDefaults: require('./defaults'),

    draw: require('./draw')
};

},{"./attributes":297,"./defaults":300,"./draw":301}],304:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttributes = require('../color/attributes');

module.exports = {
    bgcolor: {
        valType: 'color',
        dflt: colorAttributes.background,
        
        editType: 'calc',
        
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttributes.defaultLine,
        
        editType: 'calc',
        
    },
    borderwidth: {
        valType: 'integer',
        dflt: 0,
        min: 0,
        
        editType: 'calc',
        
    },
    autorange: {
        valType: 'boolean',
        dflt: true,
        
        editType: 'calc',
        
    },
    range: {
        valType: 'info_array',
        
        items: [
            {valType: 'any', editType: 'calc'},
            {valType: 'any', editType: 'calc'}
        ],
        editType: 'calc',
        
    },
    thickness: {
        valType: 'number',
        dflt: 0.15,
        min: 0,
        max: 1,
        
        editType: 'calc',
        
    },
    visible: {
        valType: 'boolean',
        dflt: true,
        
        editType: 'calc',
        
    },
    editType: 'calc'
};

},{"../color/attributes":232}],305:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Axes = require('../../plots/cartesian/axes');
var constants = require('./constants');

module.exports = function calcAutorange(gd) {
    var axes = Axes.list(gd, 'x', true);

    // Compute new slider range using axis autorange if necessary.
    //
    // Copy back range to input range slider container to skip
    // this step in subsequent draw calls.

    for(var i = 0; i < axes.length; i++) {
        var ax = axes[i],
            opts = ax[constants.name];

        // Don't try calling getAutoRange if _min and _max are filled in.
        // This happens on updates where the calc step is skipped.

        if(opts && opts.visible && opts.autorange && ax._min.length && ax._max.length) {
            opts._input.autorange = true;
            opts._input.range = opts.range = Axes.getAutoRange(ax);
        }
    }
};

},{"../../plots/cartesian/axes":396,"./constants":306}],306:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {

    // attribute container name
    name: 'rangeslider',

    // class names

    containerClassName: 'rangeslider-container',
    bgClassName: 'rangeslider-bg',
    rangePlotClassName: 'rangeslider-rangeplot',

    maskMinClassName: 'rangeslider-mask-min',
    maskMaxClassName: 'rangeslider-mask-max',
    slideBoxClassName: 'rangeslider-slidebox',

    grabberMinClassName: 'rangeslider-grabber-min',
    grabAreaMinClassName: 'rangeslider-grabarea-min',
    handleMinClassName: 'rangeslider-handle-min',

    grabberMaxClassName: 'rangeslider-grabber-max',
    grabAreaMaxClassName: 'rangeslider-grabarea-max',
    handleMaxClassName: 'rangeslider-handle-max',

    // style constants

    maskColor: 'rgba(0,0,0,0.4)',

    slideBoxFill: 'transparent',
    slideBoxCursor: 'ew-resize',

    grabAreaFill: 'transparent',
    grabAreaCursor: 'col-resize',
    grabAreaWidth: 10,

    handleWidth: 4,
    handleRadius: 1,
    handleStrokeWidth: 1,

    extraPad: 15
};

},{}],307:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var attributes = require('./attributes');

module.exports = function handleDefaults(layoutIn, layoutOut, axName) {
    if(!layoutIn[axName].rangeslider) return;

    // not super proud of this (maybe store _ in axis object instead
    if(!Lib.isPlainObject(layoutIn[axName].rangeslider)) {
        layoutIn[axName].rangeslider = {};
    }

    var containerIn = layoutIn[axName].rangeslider,
        axOut = layoutOut[axName],
        containerOut = axOut.rangeslider = {};

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, attributes, attr, dflt);
    }

    var visible = coerce('visible');
    if(!visible) return;

    coerce('bgcolor', layoutOut.plot_bgcolor);
    coerce('bordercolor');
    coerce('borderwidth');
    coerce('thickness');

    coerce('autorange', !axOut.isValidRange(containerIn.range));
    coerce('range');

    // Expand slider range to the axis range
    // TODO: what if the ranges are reversed?
    if(containerOut.range) {
        var outRange = containerOut.range,
            axRange = axOut.range;

        outRange[0] = axOut.l2r(Math.min(axOut.r2l(outRange[0]), axOut.r2l(axRange[0])));
        outRange[1] = axOut.l2r(Math.max(axOut.r2l(outRange[1]), axOut.r2l(axRange[1])));
    }

    axOut.cleanRange('rangeslider.range');

    // to map back range slider (auto) range
    containerOut._input = containerIn;
};

},{"../../lib":353,"./attributes":304}],308:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');

var Lib = require('../../lib');
var Drawing = require('../drawing');
var Color = require('../color');

var Cartesian = require('../../plots/cartesian');
var Axes = require('../../plots/cartesian/axes');

var dragElement = require('../dragelement');
var setCursor = require('../../lib/setcursor');

var constants = require('./constants');


module.exports = function(gd) {
    var fullLayout = gd._fullLayout,
        rangeSliderData = makeRangeSliderData(fullLayout);

    /*
     * <g container />
     *  <rect bg />
     *  < .... range plot />
     *  <rect mask-min />
     *  <rect mask-max />
     *  <rect slidebox />
     *  <g grabber-min />
     *      <rect handle-min />
     *      <rect grabare-min />
     *  <g grabber-max />
     *      <rect handle-max />
     *      <rect grabare-max />
     *
     *  ...
     */

    function keyFunction(axisOpts) {
        return axisOpts._name;
    }

    var rangeSliders = fullLayout._infolayer
        .selectAll('g.' + constants.containerClassName)
        .data(rangeSliderData, keyFunction);

    rangeSliders.enter().append('g')
        .classed(constants.containerClassName, true)
        .attr('pointer-events', 'all');

    // remove exiting sliders and their corresponding clip paths
    rangeSliders.exit().each(function(axisOpts) {
        var rangeSlider = d3.select(this),
            opts = axisOpts[constants.name];

        rangeSlider.remove();
        fullLayout._topdefs.select('#' + opts._clipId).remove();
    });

    // remove push margin object(s)
    if(rangeSliders.exit().size()) clearPushMargins(gd);

    // return early if no range slider is visible
    if(rangeSliderData.length === 0) return;

    // for all present range sliders
    rangeSliders.each(function(axisOpts) {
        var rangeSlider = d3.select(this),
            opts = axisOpts[constants.name],
            oppAxisOpts = fullLayout[Axes.id2name(axisOpts.anchor)];

        // update range slider dimensions

        var margin = fullLayout.margin,
            graphSize = fullLayout._size,
            domain = axisOpts.domain,
            oppDomain = oppAxisOpts.domain,
            tickHeight = (axisOpts._boundingBox || {}).height || 0;

        opts._id = constants.name + axisOpts._id;
        opts._clipId = opts._id + '-' + fullLayout._uid;

        opts._width = graphSize.w * (domain[1] - domain[0]);
        opts._height = (fullLayout.height - margin.b - margin.t) * opts.thickness;
        opts._offsetShift = Math.floor(opts.borderwidth / 2);

        var x = Math.round(margin.l + (graphSize.w * domain[0]));

        var y = Math.round(
            margin.t + graphSize.h * (1 - oppDomain[0]) +
            tickHeight +
            opts._offsetShift + constants.extraPad
        );

        rangeSlider.attr('transform', 'translate(' + x + ',' + y + ')');

        // update data <--> pixel coordinate conversion methods

        var range0 = axisOpts.r2l(opts.range[0]),
            range1 = axisOpts.r2l(opts.range[1]),
            dist = range1 - range0;

        opts.p2d = function(v) {
            return (v / opts._width) * dist + range0;
        };

        opts.d2p = function(v) {
            return (v - range0) / dist * opts._width;
        };

        opts._rl = [range0, range1];

        // update inner nodes

        rangeSlider
            .call(drawBg, gd, axisOpts, opts)
            .call(addClipPath, gd, axisOpts, opts)
            .call(drawRangePlot, gd, axisOpts, opts)
            .call(drawMasks, gd, axisOpts, opts)
            .call(drawSlideBox, gd, axisOpts, opts)
            .call(drawGrabbers, gd, axisOpts, opts);

        // setup drag element
        setupDragElement(rangeSlider, gd, axisOpts, opts);

        // update current range
        setPixelRange(rangeSlider, gd, axisOpts, opts);

        // update margins

        Plots.autoMargin(gd, opts._id, {
            x: domain[0],
            y: oppDomain[0],
            l: 0,
            r: 0,
            t: 0,
            b: opts._height + margin.b + tickHeight,
            pad: constants.extraPad + opts._offsetShift * 2
        });

    });
};

function makeRangeSliderData(fullLayout) {
    var axes = Axes.list({ _fullLayout: fullLayout }, 'x', true),
        name = constants.name,
        out = [];

    if(fullLayout._has('gl2d')) return out;

    for(var i = 0; i < axes.length; i++) {
        var ax = axes[i];

        if(ax[name] && ax[name].visible) out.push(ax);
    }

    return out;
}

function setupDragElement(rangeSlider, gd, axisOpts, opts) {
    var slideBox = rangeSlider.select('rect.' + constants.slideBoxClassName).node(),
        grabAreaMin = rangeSlider.select('rect.' + constants.grabAreaMinClassName).node(),
        grabAreaMax = rangeSlider.select('rect.' + constants.grabAreaMaxClassName).node();

    rangeSlider.on('mousedown', function() {
        var event = d3.event,
            target = event.target,
            startX = event.clientX,
            offsetX = startX - rangeSlider.node().getBoundingClientRect().left,
            minVal = opts.d2p(axisOpts._rl[0]),
            maxVal = opts.d2p(axisOpts._rl[1]);

        var dragCover = dragElement.coverSlip();

        dragCover.addEventListener('mousemove', mouseMove);
        dragCover.addEventListener('mouseup', mouseUp);

        function mouseMove(e) {
            var delta = +e.clientX - startX;
            var pixelMin, pixelMax, cursor;

            switch(target) {
                case slideBox:
                    cursor = 'ew-resize';
                    pixelMin = minVal + delta;
                    pixelMax = maxVal + delta;
                    break;

                case grabAreaMin:
                    cursor = 'col-resize';
                    pixelMin = minVal + delta;
                    pixelMax = maxVal;
                    break;

                case grabAreaMax:
                    cursor = 'col-resize';
                    pixelMin = minVal;
                    pixelMax = maxVal + delta;
                    break;

                default:
                    cursor = 'ew-resize';
                    pixelMin = offsetX;
                    pixelMax = offsetX + delta;
                    break;
            }

            if(pixelMax < pixelMin) {
                var tmp = pixelMax;
                pixelMax = pixelMin;
                pixelMin = tmp;
            }

            opts._pixelMin = pixelMin;
            opts._pixelMax = pixelMax;

            setCursor(d3.select(dragCover), cursor);
            setDataRange(rangeSlider, gd, axisOpts, opts);
        }

        function mouseUp() {
            dragCover.removeEventListener('mousemove', mouseMove);
            dragCover.removeEventListener('mouseup', mouseUp);
            Lib.removeElement(dragCover);
        }
    });
}

function setDataRange(rangeSlider, gd, axisOpts, opts) {

    function clamp(v) {
        return axisOpts.l2r(Lib.constrain(v, opts._rl[0], opts._rl[1]));
    }

    var dataMin = clamp(opts.p2d(opts._pixelMin)),
        dataMax = clamp(opts.p2d(opts._pixelMax));

    window.requestAnimationFrame(function() {
        Plotly.relayout(gd, axisOpts._name + '.range', [dataMin, dataMax]);
    });
}

function setPixelRange(rangeSlider, gd, axisOpts, opts) {
    var hw2 = constants.handleWidth / 2;

    function clamp(v) {
        return Lib.constrain(v, 0, opts._width);
    }

    function clampHandle(v) {
        return Lib.constrain(v, -hw2, opts._width + hw2);
    }

    var pixelMin = clamp(opts.d2p(axisOpts._rl[0])),
        pixelMax = clamp(opts.d2p(axisOpts._rl[1]));

    rangeSlider.select('rect.' + constants.slideBoxClassName)
        .attr('x', pixelMin)
        .attr('width', pixelMax - pixelMin);

    rangeSlider.select('rect.' + constants.maskMinClassName)
        .attr('width', pixelMin);

    rangeSlider.select('rect.' + constants.maskMaxClassName)
        .attr('x', pixelMax)
        .attr('width', opts._width - pixelMax);

    // add offset for crispier corners
    // https://github.com/plotly/plotly.js/pull/1409
    var offset = 0.5;

    var xMin = Math.round(clampHandle(pixelMin - hw2)) - offset,
        xMax = Math.round(clampHandle(pixelMax - hw2)) + offset;

    rangeSlider.select('g.' + constants.grabberMinClassName)
        .attr('transform', 'translate(' + xMin + ',' + offset + ')');

    rangeSlider.select('g.' + constants.grabberMaxClassName)
        .attr('transform', 'translate(' + xMax + ',' + offset + ')');
}

function drawBg(rangeSlider, gd, axisOpts, opts) {
    var bg = rangeSlider.selectAll('rect.' + constants.bgClassName)
        .data([0]);

    bg.enter().append('rect')
        .classed(constants.bgClassName, true)
        .attr({
            x: 0,
            y: 0,
            'shape-rendering': 'crispEdges'
        });

    var borderCorrect = (opts.borderwidth % 2) === 0 ?
            opts.borderwidth :
            opts.borderwidth - 1;

    var offsetShift = -opts._offsetShift;
    var lw = Drawing.crispRound(gd, opts.borderwidth);

    bg.attr({
        width: opts._width + borderCorrect,
        height: opts._height + borderCorrect,
        transform: 'translate(' + offsetShift + ',' + offsetShift + ')',
        fill: opts.bgcolor,
        stroke: opts.bordercolor,
        'stroke-width': lw
    });
}

function addClipPath(rangeSlider, gd, axisOpts, opts) {
    var fullLayout = gd._fullLayout;

    var clipPath = fullLayout._topdefs.selectAll('#' + opts._clipId)
        .data([0]);

    clipPath.enter().append('clipPath')
        .attr('id', opts._clipId)
        .append('rect')
        .attr({ x: 0, y: 0 });

    clipPath.select('rect').attr({
        width: opts._width,
        height: opts._height
    });
}

function drawRangePlot(rangeSlider, gd, axisOpts, opts) {
    var subplotData = Axes.getSubplots(gd, axisOpts),
        calcData = gd.calcdata;

    var rangePlots = rangeSlider.selectAll('g.' + constants.rangePlotClassName)
        .data(subplotData, Lib.identity);

    rangePlots.enter().append('g')
        .attr('class', function(id) { return constants.rangePlotClassName + ' ' + id; })
        .call(Drawing.setClipUrl, opts._clipId);

    rangePlots.order();

    rangePlots.exit().remove();

    var mainplotinfo;

    rangePlots.each(function(id, i) {
        var plotgroup = d3.select(this),
            isMainPlot = (i === 0);

        var oppAxisOpts = Axes.getFromId(gd, id, 'y'),
            oppAxisName = oppAxisOpts._name;

        var mockFigure = {
            data: [],
            layout: {
                xaxis: {
                    type: axisOpts.type,
                    domain: [0, 1],
                    range: opts.range.slice(),
                    calendar: axisOpts.calendar
                },
                width: opts._width,
                height: opts._height,
                margin: { t: 0, b: 0, l: 0, r: 0 }
            }
        };

        mockFigure.layout[oppAxisName] = {
            type: oppAxisOpts.type,
            domain: [0, 1],
            range: oppAxisOpts.range.slice(),
            calendar: oppAxisOpts.calendar
        };

        Plots.supplyDefaults(mockFigure);

        var xa = mockFigure._fullLayout.xaxis,
            ya = mockFigure._fullLayout[oppAxisName];

        var plotinfo = {
            id: id,
            plotgroup: plotgroup,
            xaxis: xa,
            yaxis: ya
        };

        if(isMainPlot) mainplotinfo = plotinfo;
        else {
            plotinfo.mainplot = 'xy';
            plotinfo.mainplotinfo = mainplotinfo;
        }

        Cartesian.rangePlot(gd, plotinfo, filterRangePlotCalcData(calcData, id));
    });
}

function filterRangePlotCalcData(calcData, subplotId) {
    var out = [];

    for(var i = 0; i < calcData.length; i++) {
        var calcTrace = calcData[i],
            trace = calcTrace[0].trace;

        if(trace.xaxis + trace.yaxis === subplotId) {
            out.push(calcTrace);
        }
    }

    return out;
}

function drawMasks(rangeSlider, gd, axisOpts, opts) {
    var maskMin = rangeSlider.selectAll('rect.' + constants.maskMinClassName)
        .data([0]);

    maskMin.enter().append('rect')
        .classed(constants.maskMinClassName, true)
        .attr({ x: 0, y: 0 })
        .attr('shape-rendering', 'crispEdges');

    maskMin
        .attr('height', opts._height)
        .call(Color.fill, constants.maskColor);

    var maskMax = rangeSlider.selectAll('rect.' + constants.maskMaxClassName)
        .data([0]);

    maskMax.enter().append('rect')
        .classed(constants.maskMaxClassName, true)
        .attr('y', 0)
        .attr('shape-rendering', 'crispEdges');

    maskMax
        .attr('height', opts._height)
        .call(Color.fill, constants.maskColor);
}

function drawSlideBox(rangeSlider, gd, axisOpts, opts) {
    if(gd._context.staticPlot) return;

    var slideBox = rangeSlider.selectAll('rect.' + constants.slideBoxClassName)
        .data([0]);

    slideBox.enter().append('rect')
        .classed(constants.slideBoxClassName, true)
        .attr('y', 0)
        .attr('cursor', constants.slideBoxCursor)
        .attr('shape-rendering', 'crispEdges');

    slideBox.attr({
        height: opts._height,
        fill: constants.slideBoxFill
    });
}

function drawGrabbers(rangeSlider, gd, axisOpts, opts) {

    // <g grabber />

    var grabberMin = rangeSlider.selectAll('g.' + constants.grabberMinClassName)
        .data([0]);
    grabberMin.enter().append('g')
        .classed(constants.grabberMinClassName, true);

    var grabberMax = rangeSlider.selectAll('g.' + constants.grabberMaxClassName)
        .data([0]);
    grabberMax.enter().append('g')
        .classed(constants.grabberMaxClassName, true);

    // <g handle />

    var handleFixAttrs = {
        x: 0,
        width: constants.handleWidth,
        rx: constants.handleRadius,
        fill: Color.background,
        stroke: Color.defaultLine,
        'stroke-width': constants.handleStrokeWidth,
        'shape-rendering': 'crispEdges'
    };

    var handleDynamicAttrs = {
        y: Math.round(opts._height / 4),
        height: Math.round(opts._height / 2),
    };

    var handleMin = grabberMin.selectAll('rect.' + constants.handleMinClassName)
        .data([0]);
    handleMin.enter().append('rect')
        .classed(constants.handleMinClassName, true)
        .attr(handleFixAttrs);
    handleMin.attr(handleDynamicAttrs);

    var handleMax = grabberMax.selectAll('rect.' + constants.handleMaxClassName)
        .data([0]);
    handleMax.enter().append('rect')
        .classed(constants.handleMaxClassName, true)
        .attr(handleFixAttrs);
    handleMax.attr(handleDynamicAttrs);

    // <g grabarea />

    if(gd._context.staticPlot) return;

    var grabAreaFixAttrs = {
        width: constants.grabAreaWidth,
        x: 0,
        y: 0,
        fill: constants.grabAreaFill,
        cursor: constants.grabAreaCursor
    };

    var grabAreaMin = grabberMin.selectAll('rect.' + constants.grabAreaMinClassName)
        .data([0]);
    grabAreaMin.enter().append('rect')
        .classed(constants.grabAreaMinClassName, true)
        .attr(grabAreaFixAttrs);
    grabAreaMin.attr('height', opts._height);

    var grabAreaMax = grabberMax.selectAll('rect.' + constants.grabAreaMaxClassName)
        .data([0]);
    grabAreaMax.enter().append('rect')
        .classed(constants.grabAreaMaxClassName, true)
        .attr(grabAreaFixAttrs);
    grabAreaMax.attr('height', opts._height);
}

function clearPushMargins(gd) {
    var pushMargins = gd._fullLayout._pushmargin || {},
        keys = Object.keys(pushMargins);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        if(k.indexOf(constants.name) !== -1) {
            Plots.autoMargin(gd, k);
        }
    }
}

},{"../../lib":353,"../../lib/setcursor":371,"../../plotly":391,"../../plots/cartesian":406,"../../plots/cartesian/axes":396,"../../plots/plots":429,"../color":233,"../dragelement":254,"../drawing":257,"./constants":306,"d3":62}],309:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'rangeslider',

    schema: {
        subplots: {
            xaxis: {rangeslider: require('./attributes')}
        }
    },

    layoutAttributes: require('./attributes'),
    handleDefaults: require('./defaults'),
    calcAutorange: require('./calc_autorange'),
    draw: require('./draw')
};

},{"./attributes":304,"./calc_autorange":305,"./defaults":307,"./draw":308}],310:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var annAttrs = require('../annotations/attributes');
var scatterLineAttrs = require('../../traces/scatter/attributes').line;
var dash = require('../drawing/attributes').dash;
var extendFlat = require('../../lib/extend').extendFlat;

module.exports = {
    _isLinkedToArray: 'shape',

    visible: {
        valType: 'boolean',
        
        dflt: true,
        editType: 'calcIfAutorange',
        
    },

    type: {
        valType: 'enumerated',
        values: ['circle', 'rect', 'path', 'line'],
        
        editType: 'calcIfAutorange',
        
    },

    layer: {
        valType: 'enumerated',
        values: ['below', 'above'],
        dflt: 'above',
        
        editType: 'arraydraw',
        
    },

    xref: extendFlat({}, annAttrs.xref, {
        
    }),
    x0: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },
    x1: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },

    yref: extendFlat({}, annAttrs.yref, {
        
    }),
    y0: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },
    y1: {
        valType: 'any',
        
        editType: 'calcIfAutorange',
        
    },

    path: {
        valType: 'string',
        
        editType: 'calcIfAutorange',
        
    },

    opacity: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 1,
        
        editType: 'arraydraw',
        
    },
    line: {
        color: extendFlat({}, scatterLineAttrs.color, {editType: 'arraydraw'}),
        width: extendFlat({}, scatterLineAttrs.width, {editType: 'calcIfAutorange'}),
        dash: extendFlat({}, dash, {editType: 'arraydraw'}),
        
        editType: 'calcIfAutorange'
    },
    fillcolor: {
        valType: 'color',
        dflt: 'rgba(0,0,0,0)',
        
        editType: 'arraydraw',
        
    },
    editType: 'arraydraw'
};

},{"../../lib/extend":344,"../../traces/scatter/attributes":491,"../annotations/attributes":218,"../drawing/attributes":256}],311:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var constants = require('./constants');
var helpers = require('./helpers');


module.exports = function calcAutorange(gd) {
    var fullLayout = gd._fullLayout,
        shapeList = Lib.filterVisible(fullLayout.shapes);

    if(!shapeList.length || !gd._fullData.length) return;

    for(var i = 0; i < shapeList.length; i++) {
        var shape = shapeList[i],
            ppad = shape.line.width / 2;

        var ax, bounds;

        if(shape.xref !== 'paper') {
            ax = Axes.getFromId(gd, shape.xref);
            bounds = shapeBounds(ax, shape.x0, shape.x1, shape.path, constants.paramIsX);
            if(bounds) Axes.expand(ax, bounds, {ppad: ppad});
        }

        if(shape.yref !== 'paper') {
            ax = Axes.getFromId(gd, shape.yref);
            bounds = shapeBounds(ax, shape.y0, shape.y1, shape.path, constants.paramIsY);
            if(bounds) Axes.expand(ax, bounds, {ppad: ppad});
        }
    }
};

function shapeBounds(ax, v0, v1, path, paramsToUse) {
    var convertVal = (ax.type === 'category') ? ax.r2c : ax.d2c;

    if(v0 !== undefined) return [convertVal(v0), convertVal(v1)];
    if(!path) return;

    var min = Infinity,
        max = -Infinity,
        segments = path.match(constants.segmentRE),
        i,
        segment,
        drawnParam,
        params,
        val;

    if(ax.type === 'date') convertVal = helpers.decodeDate(convertVal);

    for(i = 0; i < segments.length; i++) {
        segment = segments[i];
        drawnParam = paramsToUse[segment.charAt(0)].drawn;
        if(drawnParam === undefined) continue;

        params = segments[i].substr(1).match(constants.paramRE);
        if(!params || params.length < drawnParam) continue;

        val = convertVal(params[drawnParam]);
        if(val < min) min = val;
        if(val > max) max = val;
    }
    if(max >= min) return [min, max];
}

},{"../../lib":353,"../../plots/cartesian/axes":396,"./constants":312,"./helpers":315}],312:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    segmentRE: /[MLHVQCTSZ][^MLHVQCTSZ]*/g,
    paramRE: /[^\s,]+/g,

    // which numbers in each path segment are x (or y) values
    // drawn is which param is a drawn point, as opposed to a
    // control point (which doesn't count toward autorange.
    // TODO: this means curved paths could extend beyond the
    // autorange bounds. This is a bit tricky to get right
    // unless we revert to bounding boxes, but perhaps there's
    // a calculation we could do...)
    paramIsX: {
        M: {0: true, drawn: 0},
        L: {0: true, drawn: 0},
        H: {0: true, drawn: 0},
        V: {},
        Q: {0: true, 2: true, drawn: 2},
        C: {0: true, 2: true, 4: true, drawn: 4},
        T: {0: true, drawn: 0},
        S: {0: true, 2: true, drawn: 2},
        // A: {0: true, 5: true},
        Z: {}
    },

    paramIsY: {
        M: {1: true, drawn: 1},
        L: {1: true, drawn: 1},
        H: {},
        V: {0: true, drawn: 0},
        Q: {1: true, 3: true, drawn: 3},
        C: {1: true, 3: true, 5: true, drawn: 5},
        T: {1: true, drawn: 1},
        S: {1: true, 3: true, drawn: 5},
        // A: {1: true, 6: true},
        Z: {}
    },

    numParams: {
        M: 2,
        L: 2,
        H: 1,
        V: 1,
        Q: 4,
        C: 6,
        T: 2,
        S: 4,
        // A: 7,
        Z: 0
    }
};

},{}],313:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var handleArrayContainerDefaults = require('../../plots/array_container_defaults');
var handleShapeDefaults = require('./shape_defaults');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    var opts = {
        name: 'shapes',
        handleItemDefaults: handleShapeDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

},{"../../plots/array_container_defaults":393,"./shape_defaults":317}],314:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../../plotly');
var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var Color = require('../color');
var Drawing = require('../drawing');

var dragElement = require('../dragelement');
var setCursor = require('../../lib/setcursor');

var constants = require('./constants');
var helpers = require('./helpers');


// Shapes are stored in gd.layout.shapes, an array of objects
// index can point to one item in this array,
//  or non-numeric to simply add a new one
//  or -1 to modify all existing
// opt can be the full options object, or one key (to be set to value)
//  or undefined to simply redraw
// if opt is blank, val can be 'add' or a full options object to add a new
//  annotation at that point in the array, or 'remove' to delete this one

module.exports = {
    draw: draw,
    drawOne: drawOne
};

function draw(gd) {
    var fullLayout = gd._fullLayout;

    // Remove previous shapes before drawing new in shapes in fullLayout.shapes
    fullLayout._shapeUpperLayer.selectAll('path').remove();
    fullLayout._shapeLowerLayer.selectAll('path').remove();
    fullLayout._shapeSubplotLayers.selectAll('path').remove();

    for(var i = 0; i < fullLayout.shapes.length; i++) {
        if(fullLayout.shapes[i].visible) {
            drawOne(gd, i);
        }
    }

    // may need to resurrect this if we put text (LaTeX) in shapes
    // return Plots.previousPromises(gd);
}

function drawOne(gd, index) {
    // remove the existing shape if there is one.
    // because indices can change, we need to look in all shape layers
    gd._fullLayout._paper
        .selectAll('.shapelayer [data-index="' + index + '"]')
        .remove();

    var optionsIn = (gd.layout.shapes || [])[index],
        options = gd._fullLayout.shapes[index];

    // this shape is gone - quit now after deleting it
    // TODO: use d3 idioms instead of deleting and redrawing every time
    if(!optionsIn || options.visible === false) return;

    if(options.layer !== 'below') {
        drawShape(gd._fullLayout._shapeUpperLayer);
    }
    else if(options.xref === 'paper' || options.yref === 'paper') {
        drawShape(gd._fullLayout._shapeLowerLayer);
    }
    else {
        var plotinfo = gd._fullLayout._plots[options.xref + options.yref];
        if(plotinfo) {
            var mainPlot = plotinfo.mainplotinfo || plotinfo;
            drawShape(mainPlot.shapelayer);
        }
        else {
            // Fall back to _shapeLowerLayer in case the requested subplot doesn't exist.
            // This can happen if you reference the shape to an x / y axis combination
            // that doesn't have any data on it (and layer is below)
            drawShape(gd._fullLayout._shapeLowerLayer);
        }
    }

    function drawShape(shapeLayer) {
        var attrs = {
                'data-index': index,
                'fill-rule': 'evenodd',
                d: getPathString(gd, options)
            },
            lineColor = options.line.width ?
                options.line.color : 'rgba(0,0,0,0)';

        var path = shapeLayer.append('path')
            .attr(attrs)
            .style('opacity', options.opacity)
            .call(Color.stroke, lineColor)
            .call(Color.fill, options.fillcolor)
            .call(Drawing.dashLine, options.line.dash, options.line.width);

        // note that for layer="below" the clipAxes can be different from the
        // subplot we're drawing this in. This could cause problems if the shape
        // spans two subplots. See https://github.com/plotly/plotly.js/issues/1452
        var clipAxes = (options.xref + options.yref).replace(/paper/g, '');

        path.call(Drawing.setClipUrl, clipAxes ?
            ('clip' + gd._fullLayout._uid + clipAxes) :
            null
        );

        if(gd._context.edits.shapePosition) setupDragElement(gd, path, options, index);
    }
}

function setupDragElement(gd, shapePath, shapeOptions, index) {
    var MINWIDTH = 10,
        MINHEIGHT = 10;

    var update;
    var x0, y0, x1, y1, astrX0, astrY0, astrX1, astrY1;
    var n0, s0, w0, e0, astrN, astrS, astrW, astrE, optN, optS, optW, optE;
    var pathIn, astrPath;

    var xa, ya, x2p, y2p, p2x, p2y;

    var dragOptions = {
            element: shapePath.node(),
            gd: gd,
            prepFn: startDrag,
            doneFn: endDrag
        },
        dragBBox = dragOptions.element.getBoundingClientRect(),
        dragMode;

    dragElement.init(dragOptions);

    shapePath.node().onmousemove = updateDragMode;

    function updateDragMode(evt) {
        // choose 'move' or 'resize'
        // based on initial position of cursor within the drag element
        var w = dragBBox.right - dragBBox.left,
            h = dragBBox.bottom - dragBBox.top,
            x = evt.clientX - dragBBox.left,
            y = evt.clientY - dragBBox.top,
            cursor = (w > MINWIDTH && h > MINHEIGHT && !evt.shiftKey) ?
                dragElement.getCursor(x / w, 1 - y / h) :
                'move';

        setCursor(shapePath, cursor);

        // possible values 'move', 'sw', 'w', 'se', 'e', 'ne', 'n', 'nw' and 'w'
        dragMode = cursor.split('-')[0];
    }

    function startDrag(evt) {
        // setup conversion functions
        xa = Axes.getFromId(gd, shapeOptions.xref);
        ya = Axes.getFromId(gd, shapeOptions.yref);

        x2p = helpers.getDataToPixel(gd, xa);
        y2p = helpers.getDataToPixel(gd, ya, true);
        p2x = helpers.getPixelToData(gd, xa);
        p2y = helpers.getPixelToData(gd, ya, true);

        // setup update strings and initial values
        var astr = 'shapes[' + index + ']';
        if(shapeOptions.type === 'path') {
            pathIn = shapeOptions.path;
            astrPath = astr + '.path';
        }
        else {
            x0 = x2p(shapeOptions.x0);
            y0 = y2p(shapeOptions.y0);
            x1 = x2p(shapeOptions.x1);
            y1 = y2p(shapeOptions.y1);

            astrX0 = astr + '.x0';
            astrY0 = astr + '.y0';
            astrX1 = astr + '.x1';
            astrY1 = astr + '.y1';
        }

        if(x0 < x1) {
            w0 = x0; astrW = astr + '.x0'; optW = 'x0';
            e0 = x1; astrE = astr + '.x1'; optE = 'x1';
        }
        else {
            w0 = x1; astrW = astr + '.x1'; optW = 'x1';
            e0 = x0; astrE = astr + '.x0'; optE = 'x0';
        }
        if(y0 < y1) {
            n0 = y0; astrN = astr + '.y0'; optN = 'y0';
            s0 = y1; astrS = astr + '.y1'; optS = 'y1';
        }
        else {
            n0 = y1; astrN = astr + '.y1'; optN = 'y1';
            s0 = y0; astrS = astr + '.y0'; optS = 'y0';
        }

        update = {};

        // setup dragMode and the corresponding handler
        updateDragMode(evt);
        dragOptions.moveFn = (dragMode === 'move') ? moveShape : resizeShape;
    }

    function endDrag(dragged) {
        setCursor(shapePath);
        if(dragged) {
            Plotly.relayout(gd, update);
        }
    }

    function moveShape(dx, dy) {
        if(shapeOptions.type === 'path') {
            var moveX = function moveX(x) { return p2x(x2p(x) + dx); };
            if(xa && xa.type === 'date') moveX = helpers.encodeDate(moveX);

            var moveY = function moveY(y) { return p2y(y2p(y) + dy); };
            if(ya && ya.type === 'date') moveY = helpers.encodeDate(moveY);

            shapeOptions.path = movePath(pathIn, moveX, moveY);
            update[astrPath] = shapeOptions.path;
        }
        else {
            update[astrX0] = shapeOptions.x0 = p2x(x0 + dx);
            update[astrY0] = shapeOptions.y0 = p2y(y0 + dy);
            update[astrX1] = shapeOptions.x1 = p2x(x1 + dx);
            update[astrY1] = shapeOptions.y1 = p2y(y1 + dy);
        }

        shapePath.attr('d', getPathString(gd, shapeOptions));
    }

    function resizeShape(dx, dy) {
        if(shapeOptions.type === 'path') {
            // TODO: implement path resize
            var moveX = function moveX(x) { return p2x(x2p(x) + dx); };
            if(xa && xa.type === 'date') moveX = helpers.encodeDate(moveX);

            var moveY = function moveY(y) { return p2y(y2p(y) + dy); };
            if(ya && ya.type === 'date') moveY = helpers.encodeDate(moveY);

            shapeOptions.path = movePath(pathIn, moveX, moveY);
            update[astrPath] = shapeOptions.path;
        }
        else {
            var newN = (~dragMode.indexOf('n')) ? n0 + dy : n0,
                newS = (~dragMode.indexOf('s')) ? s0 + dy : s0,
                newW = (~dragMode.indexOf('w')) ? w0 + dx : w0,
                newE = (~dragMode.indexOf('e')) ? e0 + dx : e0;

            if(newS - newN > MINHEIGHT) {
                update[astrN] = shapeOptions[optN] = p2y(newN);
                update[astrS] = shapeOptions[optS] = p2y(newS);
            }

            if(newE - newW > MINWIDTH) {
                update[astrW] = shapeOptions[optW] = p2x(newW);
                update[astrE] = shapeOptions[optE] = p2x(newE);
            }
        }

        shapePath.attr('d', getPathString(gd, shapeOptions));
    }
}

function getPathString(gd, options) {
    var type = options.type,
        xa = Axes.getFromId(gd, options.xref),
        ya = Axes.getFromId(gd, options.yref),
        gs = gd._fullLayout._size,
        x2r,
        x2p,
        y2r,
        y2p;

    if(xa) {
        x2r = helpers.shapePositionToRange(xa);
        x2p = function(v) { return xa._offset + xa.r2p(x2r(v, true)); };
    }
    else {
        x2p = function(v) { return gs.l + gs.w * v; };
    }

    if(ya) {
        y2r = helpers.shapePositionToRange(ya);
        y2p = function(v) { return ya._offset + ya.r2p(y2r(v, true)); };
    }
    else {
        y2p = function(v) { return gs.t + gs.h * (1 - v); };
    }

    if(type === 'path') {
        if(xa && xa.type === 'date') x2p = helpers.decodeDate(x2p);
        if(ya && ya.type === 'date') y2p = helpers.decodeDate(y2p);
        return convertPath(options.path, x2p, y2p);
    }

    var x0 = x2p(options.x0),
        x1 = x2p(options.x1),
        y0 = y2p(options.y0),
        y1 = y2p(options.y1);

    if(type === 'line') return 'M' + x0 + ',' + y0 + 'L' + x1 + ',' + y1;
    if(type === 'rect') return 'M' + x0 + ',' + y0 + 'H' + x1 + 'V' + y1 + 'H' + x0 + 'Z';
    // circle
    var cx = (x0 + x1) / 2,
        cy = (y0 + y1) / 2,
        rx = Math.abs(cx - x0),
        ry = Math.abs(cy - y0),
        rArc = 'A' + rx + ',' + ry,
        rightPt = (cx + rx) + ',' + cy,
        topPt = cx + ',' + (cy - ry);
    return 'M' + rightPt + rArc + ' 0 1,1 ' + topPt +
        rArc + ' 0 0,1 ' + rightPt + 'Z';
}


function convertPath(pathIn, x2p, y2p) {
    // convert an SVG path string from data units to pixels
    return pathIn.replace(constants.segmentRE, function(segment) {
        var paramNumber = 0,
            segmentType = segment.charAt(0),
            xParams = constants.paramIsX[segmentType],
            yParams = constants.paramIsY[segmentType],
            nParams = constants.numParams[segmentType];

        var paramString = segment.substr(1).replace(constants.paramRE, function(param) {
            if(xParams[paramNumber]) param = x2p(param);
            else if(yParams[paramNumber]) param = y2p(param);
            paramNumber++;

            if(paramNumber > nParams) param = 'X';
            return param;
        });

        if(paramNumber > nParams) {
            paramString = paramString.replace(/[\s,]*X.*/, '');
            Lib.log('Ignoring extra params in segment ' + segment);
        }

        return segmentType + paramString;
    });
}

function movePath(pathIn, moveX, moveY) {
    return pathIn.replace(constants.segmentRE, function(segment) {
        var paramNumber = 0,
            segmentType = segment.charAt(0),
            xParams = constants.paramIsX[segmentType],
            yParams = constants.paramIsY[segmentType],
            nParams = constants.numParams[segmentType];

        var paramString = segment.substr(1).replace(constants.paramRE, function(param) {
            if(paramNumber >= nParams) return param;

            if(xParams[paramNumber]) param = moveX(param);
            else if(yParams[paramNumber]) param = moveY(param);

            paramNumber++;

            return param;
        });

        return segmentType + paramString;
    });
}

},{"../../lib":353,"../../lib/setcursor":371,"../../plotly":391,"../../plots/cartesian/axes":396,"../color":233,"../dragelement":254,"../drawing":257,"./constants":312,"./helpers":315}],315:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// special position conversion functions... category axis positions can't be
// specified by their data values, because they don't make a continuous mapping.
// so these have to be specified in terms of the category serial numbers,
// but can take fractional values. Other axis types we specify position based on
// the actual data values.
// TODO: in V2.0 (when log axis ranges are in data units) range and shape position
// will be identical, so rangeToShapePosition and shapePositionToRange can be
// removed entirely.

exports.rangeToShapePosition = function(ax) {
    return (ax.type === 'log') ? ax.r2d : function(v) { return v; };
};

exports.shapePositionToRange = function(ax) {
    return (ax.type === 'log') ? ax.d2r : function(v) { return v; };
};

exports.decodeDate = function(convertToPx) {
    return function(v) {
        if(v.replace) v = v.replace('_', ' ');
        return convertToPx(v);
    };
};

exports.encodeDate = function(convertToDate) {
    return function(v) { return convertToDate(v).replace(' ', '_'); };
};

exports.getDataToPixel = function(gd, axis, isVertical) {
    var gs = gd._fullLayout._size,
        dataToPixel;

    if(axis) {
        var d2r = exports.shapePositionToRange(axis);

        dataToPixel = function(v) {
            return axis._offset + axis.r2p(d2r(v, true));
        };

        if(axis.type === 'date') dataToPixel = exports.decodeDate(dataToPixel);
    }
    else if(isVertical) {
        dataToPixel = function(v) { return gs.t + gs.h * (1 - v); };
    }
    else {
        dataToPixel = function(v) { return gs.l + gs.w * v; };
    }

    return dataToPixel;
};

exports.getPixelToData = function(gd, axis, isVertical) {
    var gs = gd._fullLayout._size,
        pixelToData;

    if(axis) {
        var r2d = exports.rangeToShapePosition(axis);
        pixelToData = function(p) { return r2d(axis.p2r(p - axis._offset)); };
    }
    else if(isVertical) {
        pixelToData = function(p) { return 1 - (p - gs.t) / gs.h; };
    }
    else {
        pixelToData = function(p) { return (p - gs.l) / gs.w; };
    }

    return pixelToData;
};

},{}],316:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var drawModule = require('./draw');

module.exports = {
    moduleType: 'component',
    name: 'shapes',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    calcAutorange: require('./calc_autorange'),
    draw: drawModule.draw,
    drawOne: drawModule.drawOne
};

},{"./attributes":310,"./calc_autorange":311,"./defaults":313,"./draw":314}],317:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var attributes = require('./attributes');
var helpers = require('./helpers');


module.exports = function handleShapeDefaults(shapeIn, shapeOut, fullLayout, opts, itemOpts) {
    opts = opts || {};
    itemOpts = itemOpts || {};

    function coerce(attr, dflt) {
        return Lib.coerce(shapeIn, shapeOut, attributes, attr, dflt);
    }

    var visible = coerce('visible', !itemOpts.itemIsNotPlainObject);

    if(!visible) return shapeOut;

    coerce('layer');
    coerce('opacity');
    coerce('fillcolor');
    coerce('line.color');
    coerce('line.width');
    coerce('line.dash');

    var dfltType = shapeIn.path ? 'path' : 'rect',
        shapeType = coerce('type', dfltType);

    // positioning
    var axLetters = ['x', 'y'];
    for(var i = 0; i < 2; i++) {
        var axLetter = axLetters[i],
            gdMock = {_fullLayout: fullLayout};

        // xref, yref
        var axRef = Axes.coerceRef(shapeIn, shapeOut, gdMock, axLetter, '', 'paper');

        if(shapeType !== 'path') {
            var dflt0 = 0.25,
                dflt1 = 0.75,
                ax,
                pos2r,
                r2pos;

            if(axRef !== 'paper') {
                ax = Axes.getFromId(gdMock, axRef);
                r2pos = helpers.rangeToShapePosition(ax);
                pos2r = helpers.shapePositionToRange(ax);
            }
            else {
                pos2r = r2pos = Lib.identity;
            }

            // hack until V2.0 when log has regular range behavior - make it look like other
            // ranges to send to coerce, then put it back after
            // this is all to give reasonable default position behavior on log axes, which is
            // a pretty unimportant edge case so we could just ignore this.
            var attr0 = axLetter + '0',
                attr1 = axLetter + '1',
                in0 = shapeIn[attr0],
                in1 = shapeIn[attr1];
            shapeIn[attr0] = pos2r(shapeIn[attr0], true);
            shapeIn[attr1] = pos2r(shapeIn[attr1], true);

            // x0, x1 (and y0, y1)
            Axes.coercePosition(shapeOut, gdMock, coerce, axRef, attr0, dflt0);
            Axes.coercePosition(shapeOut, gdMock, coerce, axRef, attr1, dflt1);

            // hack part 2
            shapeOut[attr0] = r2pos(shapeOut[attr0]);
            shapeOut[attr1] = r2pos(shapeOut[attr1]);
            shapeIn[attr0] = in0;
            shapeIn[attr1] = in1;
        }
    }

    if(shapeType === 'path') {
        coerce('path');
    }
    else {
        Lib.noneOrAll(shapeIn, shapeOut, ['x0', 'x1', 'y0', 'y1']);
    }

    return shapeOut;
};

},{"../../lib":353,"../../plots/cartesian/axes":396,"./attributes":310,"./helpers":315}],318:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var padAttrs = require('../../plots/pad_attributes');
var extendDeepAll = require('../../lib/extend').extendDeepAll;
var overrideAll = require('../../plot_api/edit_types').overrideAll;
var animationAttrs = require('../../plots/animation_attributes');
var constants = require('./constants');

var stepsAttrs = {
    _isLinkedToArray: 'step',

    method: {
        valType: 'enumerated',
        values: ['restyle', 'relayout', 'animate', 'update', 'skip'],
        dflt: 'restyle',
        
        
    },
    args: {
        valType: 'info_array',
        
        freeLength: true,
        items: [
            { valType: 'any' },
            { valType: 'any' },
            { valType: 'any' }
        ],
        
    },
    label: {
        valType: 'string',
        
        
    },
    value: {
        valType: 'string',
        
        
    },
    execute: {
        valType: 'boolean',
        
        dflt: true,
        
    }
};

module.exports = overrideAll({
    _isLinkedToArray: 'slider',

    visible: {
        valType: 'boolean',
        
        dflt: true,
        
    },

    active: {
        valType: 'number',
        
        min: 0,
        dflt: 0,
        
    },

    steps: stepsAttrs,

    lenmode: {
        valType: 'enumerated',
        values: ['fraction', 'pixels'],
        
        dflt: 'fraction',
        
    },
    len: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        
    },
    x: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 0,
        
        
    },
    pad: extendDeepAll({}, padAttrs, {
        
    }, {t: {dflt: 20}}),
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'left',
        
        
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 0,
        
        
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'top',
        
        
    },

    transition: {
        duration: {
            valType: 'number',
            
            min: 0,
            dflt: 150,
            
        },
        easing: {
            valType: 'enumerated',
            values: animationAttrs.transition.easing.values,
            
            dflt: 'cubic-in-out',
            
        }
    },

    currentvalue: {
        visible: {
            valType: 'boolean',
            
            dflt: true,
            
        },

        xanchor: {
            valType: 'enumerated',
            values: ['left', 'center', 'right'],
            dflt: 'left',
            
            
        },

        offset: {
            valType: 'number',
            dflt: 10,
            
            
        },

        prefix: {
            valType: 'string',
            
            
        },

        suffix: {
            valType: 'string',
            
            
        },

        font: fontAttrs({
            
        })
    },

    font: fontAttrs({
        
    }),

    activebgcolor: {
        valType: 'color',
        
        dflt: constants.gripBgActiveColor,
        
    },
    bgcolor: {
        valType: 'color',
        
        dflt: constants.railBgColor,
        
    },
    bordercolor: {
        valType: 'color',
        dflt: constants.railBorderColor,
        
        
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: constants.railBorderWidth,
        
        
    },
    ticklen: {
        valType: 'number',
        min: 0,
        dflt: constants.tickLength,
        
        
    },
    tickcolor: {
        valType: 'color',
        dflt: constants.tickColor,
        
        
    },
    tickwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        
    },
    minorticklen: {
        valType: 'number',
        min: 0,
        dflt: constants.minorTickLength,
        
        
    }
}, 'arraydraw', 'from-root');

},{"../../lib/extend":344,"../../plot_api/edit_types":380,"../../plots/animation_attributes":392,"../../plots/font_attributes":420,"../../plots/pad_attributes":428,"./constants":319}],319:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {

    // layout attribute name
    name: 'sliders',

    // class names
    containerClassName: 'slider-container',
    groupClassName: 'slider-group',
    inputAreaClass: 'slider-input-area',
    railRectClass: 'slider-rail-rect',
    railTouchRectClass: 'slider-rail-touch-rect',
    gripRectClass: 'slider-grip-rect',
    tickRectClass: 'slider-tick-rect',
    inputProxyClass: 'slider-input-proxy',
    labelsClass: 'slider-labels',
    labelGroupClass: 'slider-label-group',
    labelClass: 'slider-label',
    currentValueClass: 'slider-current-value',

    railHeight: 5,

    // DOM attribute name in button group keeping track
    // of active update menu
    menuIndexAttrName: 'slider-active-index',

    // id root pass to Plots.autoMargin
    autoMarginIdRoot: 'slider-',

    // min item width / height
    minWidth: 30,
    minHeight: 30,

    // padding around item text
    textPadX: 40,

    // arrow offset off right edge
    arrowOffsetX: 4,

    railRadius: 2,
    railWidth: 5,
    railBorder: 4,
    railBorderWidth: 1,
    railBorderColor: '#bec8d9',
    railBgColor: '#f8fafc',

    // The distance of the rail from the edge of the touchable area
    // Slightly less than the step inset because of the curved edges
    // of the rail
    railInset: 8,

    // The distance from the extremal tick marks to the edge of the
    // touchable area. This is basically the same as the grip radius,
    // but for other styles it wouldn't really need to be.
    stepInset: 10,

    gripRadius: 10,
    gripWidth: 20,
    gripHeight: 20,
    gripBorder: 20,
    gripBorderWidth: 1,
    gripBorderColor: '#bec8d9',
    gripBgColor: '#f6f8fa',
    gripBgActiveColor: '#dbdde0',

    labelPadding: 8,
    labelOffset: 0,

    tickWidth: 1,
    tickColor: '#333',
    tickOffset: 25,
    tickLength: 7,

    minorTickOffset: 25,
    minorTickColor: '#333',
    minorTickLength: 4,

    // Extra space below the current value label:
    currentValuePadding: 8,
    currentValueInset: 0,
};

},{}],320:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');

var attributes = require('./attributes');
var constants = require('./constants');

var name = constants.name;
var stepAttrs = attributes.steps;


module.exports = function slidersDefaults(layoutIn, layoutOut) {
    var opts = {
        name: name,
        handleItemDefaults: sliderDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

function sliderDefaults(sliderIn, sliderOut, layoutOut) {

    function coerce(attr, dflt) {
        return Lib.coerce(sliderIn, sliderOut, attributes, attr, dflt);
    }

    var steps = stepsDefaults(sliderIn, sliderOut);

    var visible = coerce('visible', steps.length > 0);
    if(!visible) return;

    coerce('active');

    coerce('x');
    coerce('y');
    Lib.noneOrAll(sliderIn, sliderOut, ['x', 'y']);

    coerce('xanchor');
    coerce('yanchor');

    coerce('len');
    coerce('lenmode');

    coerce('pad.t');
    coerce('pad.r');
    coerce('pad.b');
    coerce('pad.l');

    Lib.coerceFont(coerce, 'font', layoutOut.font);

    var currentValueIsVisible = coerce('currentvalue.visible');

    if(currentValueIsVisible) {
        coerce('currentvalue.xanchor');
        coerce('currentvalue.prefix');
        coerce('currentvalue.suffix');
        coerce('currentvalue.offset');

        Lib.coerceFont(coerce, 'currentvalue.font', sliderOut.font);
    }

    coerce('transition.duration');
    coerce('transition.easing');

    coerce('bgcolor');
    coerce('activebgcolor');
    coerce('bordercolor');
    coerce('borderwidth');
    coerce('ticklen');
    coerce('tickwidth');
    coerce('tickcolor');
    coerce('minorticklen');
}

function stepsDefaults(sliderIn, sliderOut) {
    var valuesIn = sliderIn.steps || [],
        valuesOut = sliderOut.steps = [];

    var valueIn, valueOut;

    function coerce(attr, dflt) {
        return Lib.coerce(valueIn, valueOut, stepAttrs, attr, dflt);
    }

    for(var i = 0; i < valuesIn.length; i++) {
        valueIn = valuesIn[i];
        valueOut = {};

        coerce('method');

        if(!Lib.isPlainObject(valueIn) || (valueOut.method !== 'skip' && !Array.isArray(valueIn.args))) {
            continue;
        }

        coerce('args');
        coerce('label', 'step-' + i);
        coerce('value', valueOut.label);
        coerce('execute');

        valuesOut.push(valueOut);
    }

    return valuesOut;
}

},{"../../lib":353,"../../plots/array_container_defaults":393,"./attributes":318,"./constants":319}],321:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plots = require('../../plots/plots');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var anchorUtils = require('../legend/anchor_utils');

var constants = require('./constants');
var LINE_SPACING = require('../../constants/alignment').LINE_SPACING;


module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout,
        sliderData = makeSliderData(fullLayout, gd);

    // draw a container for *all* sliders:
    var sliders = fullLayout._infolayer
        .selectAll('g.' + constants.containerClassName)
        .data(sliderData.length > 0 ? [0] : []);

    sliders.enter().append('g')
        .classed(constants.containerClassName, true)
        .style('cursor', 'ew-resize');

    sliders.exit().remove();

    // If no more sliders, clear the margisn:
    if(sliders.exit().size()) clearPushMargins(gd);

    // Return early if no menus visible:
    if(sliderData.length === 0) return;

    var sliderGroups = sliders.selectAll('g.' + constants.groupClassName)
        .data(sliderData, keyFunction);

    sliderGroups.enter().append('g')
        .classed(constants.groupClassName, true);

    sliderGroups.exit().each(function(sliderOpts) {
        d3.select(this).remove();

        sliderOpts._commandObserver.remove();
        delete sliderOpts._commandObserver;

        Plots.autoMargin(gd, constants.autoMarginIdRoot + sliderOpts._index);
    });

    // Find the dimensions of the sliders:
    for(var i = 0; i < sliderData.length; i++) {
        var sliderOpts = sliderData[i];
        findDimensions(gd, sliderOpts);
    }

    sliderGroups.each(function(sliderOpts) {
        // If it has fewer than two options, it's not really a slider:
        if(sliderOpts.steps.length < 2) return;

        var gSlider = d3.select(this);

        computeLabelSteps(sliderOpts);

        Plots.manageCommandObserver(gd, sliderOpts, sliderOpts.steps, function(data) {
            // NB: Same as below. This is *not* always the same as sliderOpts since
            // if a new set of steps comes in, the reference in this callback would
            // be invalid. We need to refetch it from the slider group, which is
            // the join data that creates this slider. So if this slider still exists,
            // the group should be valid, *to the best of my knowledge.* If not,
            // we'd have to look it up by d3 data join index/key.
            var opts = gSlider.data()[0];

            if(opts.active === data.index) return;
            if(opts._dragging) return;

            setActive(gd, gSlider, opts, data.index, false, true);
        });

        drawSlider(gd, d3.select(this), sliderOpts);
    });
};

// This really only just filters by visibility:
function makeSliderData(fullLayout, gd) {
    var contOpts = fullLayout[constants.name],
        sliderData = [];

    for(var i = 0; i < contOpts.length; i++) {
        var item = contOpts[i];
        if(!item.visible || !item.steps.length) continue;
        item.gd = gd;
        sliderData.push(item);
    }

    return sliderData;
}

// This is set in the defaults step:
function keyFunction(opts) {
    return opts._index;
}

// Compute the dimensions (mutates sliderOpts):
function findDimensions(gd, sliderOpts) {
    var sliderLabels = Drawing.tester.selectAll('g.' + constants.labelGroupClass)
        .data(sliderOpts.steps);

    sliderLabels.enter().append('g')
        .classed(constants.labelGroupClass, true);

    // loop over fake buttons to find width / height
    var maxLabelWidth = 0;
    var labelHeight = 0;
    sliderLabels.each(function(stepOpts) {
        var labelGroup = d3.select(this);

        var text = drawLabel(labelGroup, {step: stepOpts}, sliderOpts);

        var textNode = text.node();
        if(textNode) {
            var bBox = Drawing.bBox(textNode);
            labelHeight = Math.max(labelHeight, bBox.height);
            maxLabelWidth = Math.max(maxLabelWidth, bBox.width);
        }
    });

    sliderLabels.remove();

    sliderOpts.inputAreaWidth = Math.max(
        constants.railWidth,
        constants.gripHeight
    );

    // calculate some overall dimensions - some of these are needed for
    // calculating the currentValue dimensions
    var graphSize = gd._fullLayout._size;
    sliderOpts.lx = graphSize.l + graphSize.w * sliderOpts.x;
    sliderOpts.ly = graphSize.t + graphSize.h * (1 - sliderOpts.y);

    if(sliderOpts.lenmode === 'fraction') {
        // fraction:
        sliderOpts.outerLength = Math.round(graphSize.w * sliderOpts.len);
    } else {
        // pixels:
        sliderOpts.outerLength = sliderOpts.len;
    }

    // Set the length-wise padding so that the grip ends up *on* the end of
    // the bar when at either extreme
    sliderOpts.lenPad = Math.round(constants.gripWidth * 0.5);

    // The length of the rail, *excluding* padding on either end:
    sliderOpts.inputAreaStart = 0;
    sliderOpts.inputAreaLength = Math.round(sliderOpts.outerLength - sliderOpts.pad.l - sliderOpts.pad.r);

    var textableInputLength = sliderOpts.inputAreaLength - 2 * constants.stepInset;
    var availableSpacePerLabel = textableInputLength / (sliderOpts.steps.length - 1);
    var computedSpacePerLabel = maxLabelWidth + constants.labelPadding;
    sliderOpts.labelStride = Math.max(1, Math.ceil(computedSpacePerLabel / availableSpacePerLabel));
    sliderOpts.labelHeight = labelHeight;

    // loop over all possible values for currentValue to find the
    // area we need for it
    sliderOpts.currentValueMaxWidth = 0;
    sliderOpts.currentValueHeight = 0;
    sliderOpts.currentValueTotalHeight = 0;
    sliderOpts.currentValueMaxLines = 1;

    if(sliderOpts.currentvalue.visible) {
        // Get the dimensions of the current value label:
        var dummyGroup = Drawing.tester.append('g');

        sliderLabels.each(function(stepOpts) {
            var curValPrefix = drawCurrentValue(dummyGroup, sliderOpts, stepOpts.label);
            var curValSize = (curValPrefix.node() && Drawing.bBox(curValPrefix.node())) || {width: 0, height: 0};
            var lines = svgTextUtils.lineCount(curValPrefix);
            sliderOpts.currentValueMaxWidth = Math.max(sliderOpts.currentValueMaxWidth, Math.ceil(curValSize.width));
            sliderOpts.currentValueHeight = Math.max(sliderOpts.currentValueHeight, Math.ceil(curValSize.height));
            sliderOpts.currentValueMaxLines = Math.max(sliderOpts.currentValueMaxLines, lines);
        });

        sliderOpts.currentValueTotalHeight = sliderOpts.currentValueHeight + sliderOpts.currentvalue.offset;

        dummyGroup.remove();
    }

    sliderOpts.height = sliderOpts.currentValueTotalHeight + constants.tickOffset + sliderOpts.ticklen + constants.labelOffset + sliderOpts.labelHeight + sliderOpts.pad.t + sliderOpts.pad.b;

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(sliderOpts)) {
        sliderOpts.lx -= sliderOpts.outerLength;
        xanchor = 'right';
    }
    if(anchorUtils.isCenterAnchor(sliderOpts)) {
        sliderOpts.lx -= sliderOpts.outerLength / 2;
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(sliderOpts)) {
        sliderOpts.ly -= sliderOpts.height;
        yanchor = 'bottom';
    }
    if(anchorUtils.isMiddleAnchor(sliderOpts)) {
        sliderOpts.ly -= sliderOpts.height / 2;
        yanchor = 'middle';
    }

    sliderOpts.outerLength = Math.ceil(sliderOpts.outerLength);
    sliderOpts.height = Math.ceil(sliderOpts.height);
    sliderOpts.lx = Math.round(sliderOpts.lx);
    sliderOpts.ly = Math.round(sliderOpts.ly);

    Plots.autoMargin(gd, constants.autoMarginIdRoot + sliderOpts._index, {
        x: sliderOpts.x,
        y: sliderOpts.y,
        l: sliderOpts.outerLength * ({right: 1, center: 0.5}[xanchor] || 0),
        r: sliderOpts.outerLength * ({left: 1, center: 0.5}[xanchor] || 0),
        b: sliderOpts.height * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: sliderOpts.height * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

function drawSlider(gd, sliderGroup, sliderOpts) {
    // This is related to the other long notes in this file regarding what happens
    // when slider steps disappear. This particular fix handles what happens when
    // the *current* slider step is removed. The drawing functions will error out
    // when they fail to find it, so the fix for now is that it will just draw the
    // slider in the first position but will not execute the command.
    if(sliderOpts.active >= sliderOpts.steps.length) {
        sliderOpts.active = 0;
    }

    // These are carefully ordered for proper z-ordering:
    sliderGroup
        .call(drawCurrentValue, sliderOpts)
        .call(drawRail, sliderOpts)
        .call(drawLabelGroup, sliderOpts)
        .call(drawTicks, sliderOpts)
        .call(drawTouchRect, gd, sliderOpts)
        .call(drawGrip, gd, sliderOpts);

    // Position the rectangle:
    Drawing.setTranslate(sliderGroup, sliderOpts.lx + sliderOpts.pad.l, sliderOpts.ly + sliderOpts.pad.t);

    sliderGroup.call(setGripPosition, sliderOpts, sliderOpts.active / (sliderOpts.steps.length - 1), false);
    sliderGroup.call(drawCurrentValue, sliderOpts);

}

function drawCurrentValue(sliderGroup, sliderOpts, valueOverride) {
    if(!sliderOpts.currentvalue.visible) return;

    var x0, textAnchor;
    var text = sliderGroup.selectAll('text')
        .data([0]);

    switch(sliderOpts.currentvalue.xanchor) {
        case 'right':
            // This is anchored left and adjusted by the width of the longest label
            // so that the prefix doesn't move. The goal of this is to emphasize
            // what's actually changing and make the update less distracting.
            x0 = sliderOpts.inputAreaLength - constants.currentValueInset - sliderOpts.currentValueMaxWidth;
            textAnchor = 'left';
            break;
        case 'center':
            x0 = sliderOpts.inputAreaLength * 0.5;
            textAnchor = 'middle';
            break;
        default:
            x0 = constants.currentValueInset;
            textAnchor = 'left';
    }

    text.enter().append('text')
        .classed(constants.labelClass, true)
        .classed('user-select-none', true)
        .attr({
            'text-anchor': textAnchor,
            'data-notex': 1
        });

    var str = sliderOpts.currentvalue.prefix ? sliderOpts.currentvalue.prefix : '';

    if(typeof valueOverride === 'string') {
        str += valueOverride;
    } else {
        var curVal = sliderOpts.steps[sliderOpts.active].label;
        str += curVal;
    }

    if(sliderOpts.currentvalue.suffix) {
        str += sliderOpts.currentvalue.suffix;
    }

    text.call(Drawing.font, sliderOpts.currentvalue.font)
        .text(str)
        .call(svgTextUtils.convertToTspans, sliderOpts.gd);

    var lines = svgTextUtils.lineCount(text);

    var y0 = (sliderOpts.currentValueMaxLines + 1 - lines) *
        sliderOpts.currentvalue.font.size * LINE_SPACING;

    svgTextUtils.positionText(text, x0, y0);

    return text;
}

function drawGrip(sliderGroup, gd, sliderOpts) {
    var grip = sliderGroup.selectAll('rect.' + constants.gripRectClass)
        .data([0]);

    grip.enter().append('rect')
        .classed(constants.gripRectClass, true)
        .call(attachGripEvents, gd, sliderGroup, sliderOpts)
        .style('pointer-events', 'all');

    grip.attr({
        width: constants.gripWidth,
        height: constants.gripHeight,
        rx: constants.gripRadius,
        ry: constants.gripRadius,
    })
        .call(Color.stroke, sliderOpts.bordercolor)
        .call(Color.fill, sliderOpts.bgcolor)
        .style('stroke-width', sliderOpts.borderwidth + 'px');
}

function drawLabel(item, data, sliderOpts) {
    var text = item.selectAll('text')
        .data([0]);

    text.enter().append('text')
        .classed(constants.labelClass, true)
        .classed('user-select-none', true)
        .attr({
            'text-anchor': 'middle',
            'data-notex': 1
        });

    text.call(Drawing.font, sliderOpts.font)
        .text(data.step.label)
        .call(svgTextUtils.convertToTspans, sliderOpts.gd);

    return text;
}

function drawLabelGroup(sliderGroup, sliderOpts) {
    var labels = sliderGroup.selectAll('g.' + constants.labelsClass)
        .data([0]);

    labels.enter().append('g')
        .classed(constants.labelsClass, true);

    var labelItems = labels.selectAll('g.' + constants.labelGroupClass)
        .data(sliderOpts.labelSteps);

    labelItems.enter().append('g')
        .classed(constants.labelGroupClass, true);

    labelItems.exit().remove();

    labelItems.each(function(d) {
        var item = d3.select(this);

        item.call(drawLabel, d, sliderOpts);

        Drawing.setTranslate(item,
            normalizedValueToPosition(sliderOpts, d.fraction),
            constants.tickOffset +
                sliderOpts.ticklen +
                // position is the baseline of the top line of text only, even
                // if the label spans multiple lines
                sliderOpts.font.size * LINE_SPACING +
                constants.labelOffset +
                sliderOpts.currentValueTotalHeight
        );
    });

}

function handleInput(gd, sliderGroup, sliderOpts, normalizedPosition, doTransition) {
    var quantizedPosition = Math.round(normalizedPosition * (sliderOpts.steps.length - 1));

    if(quantizedPosition !== sliderOpts.active) {
        setActive(gd, sliderGroup, sliderOpts, quantizedPosition, true, doTransition);
    }
}

function setActive(gd, sliderGroup, sliderOpts, index, doCallback, doTransition) {
    var previousActive = sliderOpts.active;
    sliderOpts._input.active = sliderOpts.active = index;

    var step = sliderOpts.steps[sliderOpts.active];

    sliderGroup.call(setGripPosition, sliderOpts, sliderOpts.active / (sliderOpts.steps.length - 1), doTransition);
    sliderGroup.call(drawCurrentValue, sliderOpts);

    gd.emit('plotly_sliderchange', {
        slider: sliderOpts,
        step: sliderOpts.steps[sliderOpts.active],
        interaction: doCallback,
        previousActive: previousActive
    });

    if(step && step.method && doCallback) {
        if(sliderGroup._nextMethod) {
            // If we've already queued up an update, just overwrite it with the most recent:
            sliderGroup._nextMethod.step = step;
            sliderGroup._nextMethod.doCallback = doCallback;
            sliderGroup._nextMethod.doTransition = doTransition;
        } else {
            sliderGroup._nextMethod = {step: step, doCallback: doCallback, doTransition: doTransition};
            sliderGroup._nextMethodRaf = window.requestAnimationFrame(function() {
                var _step = sliderGroup._nextMethod.step;
                if(!_step.method) return;

                if(_step.execute) {
                    Plots.executeAPICommand(gd, _step.method, _step.args);
                }

                sliderGroup._nextMethod = null;
                sliderGroup._nextMethodRaf = null;
            });
        }
    }
}

function attachGripEvents(item, gd, sliderGroup) {
    var node = sliderGroup.node();
    var $gd = d3.select(gd);

    // NB: This is *not* the same as sliderOpts itself! These callbacks
    // are in a closure so this array won't actually be correct if the
    // steps have changed since this was initialized. The sliderGroup,
    // however, has not changed since that *is* the slider, so it must
    // be present to receive mouse events.
    function getSliderOpts() {
        return sliderGroup.data()[0];
    }

    item.on('mousedown', function() {
        var sliderOpts = getSliderOpts();
        gd.emit('plotly_sliderstart', {slider: sliderOpts});

        var grip = sliderGroup.select('.' + constants.gripRectClass);

        d3.event.stopPropagation();
        d3.event.preventDefault();
        grip.call(Color.fill, sliderOpts.activebgcolor);

        var normalizedPosition = positionToNormalizedValue(sliderOpts, d3.mouse(node)[0]);
        handleInput(gd, sliderGroup, sliderOpts, normalizedPosition, true);
        sliderOpts._dragging = true;

        $gd.on('mousemove', function() {
            var sliderOpts = getSliderOpts();
            var normalizedPosition = positionToNormalizedValue(sliderOpts, d3.mouse(node)[0]);
            handleInput(gd, sliderGroup, sliderOpts, normalizedPosition, false);
        });

        $gd.on('mouseup', function() {
            var sliderOpts = getSliderOpts();
            sliderOpts._dragging = false;
            grip.call(Color.fill, sliderOpts.bgcolor);
            $gd.on('mouseup', null);
            $gd.on('mousemove', null);

            gd.emit('plotly_sliderend', {
                slider: sliderOpts,
                step: sliderOpts.steps[sliderOpts.active]
            });
        });
    });
}

function drawTicks(sliderGroup, sliderOpts) {
    var tick = sliderGroup.selectAll('rect.' + constants.tickRectClass)
        .data(sliderOpts.steps);

    tick.enter().append('rect')
        .classed(constants.tickRectClass, true);

    tick.exit().remove();

    tick.attr({
        width: sliderOpts.tickwidth + 'px',
        'shape-rendering': 'crispEdges'
    });

    tick.each(function(d, i) {
        var isMajor = i % sliderOpts.labelStride === 0;
        var item = d3.select(this);

        item
            .attr({height: isMajor ? sliderOpts.ticklen : sliderOpts.minorticklen})
            .call(Color.fill, isMajor ? sliderOpts.tickcolor : sliderOpts.tickcolor);

        Drawing.setTranslate(item,
            normalizedValueToPosition(sliderOpts, i / (sliderOpts.steps.length - 1)) - 0.5 * sliderOpts.tickwidth,
            (isMajor ? constants.tickOffset : constants.minorTickOffset) + sliderOpts.currentValueTotalHeight
        );
    });

}

function computeLabelSteps(sliderOpts) {
    sliderOpts.labelSteps = [];
    var i0 = 0;
    var nsteps = sliderOpts.steps.length;

    for(var i = i0; i < nsteps; i += sliderOpts.labelStride) {
        sliderOpts.labelSteps.push({
            fraction: i / (nsteps - 1),
            step: sliderOpts.steps[i]
        });
    }
}

function setGripPosition(sliderGroup, sliderOpts, position, doTransition) {
    var grip = sliderGroup.select('rect.' + constants.gripRectClass);

    var x = normalizedValueToPosition(sliderOpts, position);

    // If this is true, then *this component* is already invoking its own command
    // and has triggered its own animation.
    if(sliderOpts._invokingCommand) return;

    var el = grip;
    if(doTransition && sliderOpts.transition.duration > 0) {
        el = el.transition()
            .duration(sliderOpts.transition.duration)
            .ease(sliderOpts.transition.easing);
    }

    // Drawing.setTranslate doesn't work here becasue of the transition duck-typing.
    // It's also not necessary because there are no other transitions to preserve.
    el.attr('transform', 'translate(' + (x - constants.gripWidth * 0.5) + ',' + (sliderOpts.currentValueTotalHeight) + ')');
}

// Convert a number from [0-1] to a pixel position relative to the slider group container:
function normalizedValueToPosition(sliderOpts, normalizedPosition) {
    return sliderOpts.inputAreaStart + constants.stepInset +
        (sliderOpts.inputAreaLength - 2 * constants.stepInset) * Math.min(1, Math.max(0, normalizedPosition));
}

// Convert a position relative to the slider group to a nubmer in [0, 1]
function positionToNormalizedValue(sliderOpts, position) {
    return Math.min(1, Math.max(0, (position - constants.stepInset - sliderOpts.inputAreaStart) / (sliderOpts.inputAreaLength - 2 * constants.stepInset - 2 * sliderOpts.inputAreaStart)));
}

function drawTouchRect(sliderGroup, gd, sliderOpts) {
    var rect = sliderGroup.selectAll('rect.' + constants.railTouchRectClass)
        .data([0]);

    rect.enter().append('rect')
        .classed(constants.railTouchRectClass, true)
        .call(attachGripEvents, gd, sliderGroup, sliderOpts)
        .style('pointer-events', 'all');

    rect.attr({
        width: sliderOpts.inputAreaLength,
        height: Math.max(sliderOpts.inputAreaWidth, constants.tickOffset + sliderOpts.ticklen + sliderOpts.labelHeight)
    })
        .call(Color.fill, sliderOpts.bgcolor)
        .attr('opacity', 0);

    Drawing.setTranslate(rect, 0, sliderOpts.currentValueTotalHeight);
}

function drawRail(sliderGroup, sliderOpts) {
    var rect = sliderGroup.selectAll('rect.' + constants.railRectClass)
        .data([0]);

    rect.enter().append('rect')
        .classed(constants.railRectClass, true);

    var computedLength = sliderOpts.inputAreaLength - constants.railInset * 2;

    rect.attr({
        width: computedLength,
        height: constants.railWidth,
        rx: constants.railRadius,
        ry: constants.railRadius,
        'shape-rendering': 'crispEdges'
    })
        .call(Color.stroke, sliderOpts.bordercolor)
        .call(Color.fill, sliderOpts.bgcolor)
        .style('stroke-width', sliderOpts.borderwidth + 'px');

    Drawing.setTranslate(rect,
        constants.railInset,
        (sliderOpts.inputAreaWidth - constants.railWidth) * 0.5 + sliderOpts.currentValueTotalHeight
    );
}

function clearPushMargins(gd) {
    var pushMargins = gd._fullLayout._pushmargin || {},
        keys = Object.keys(pushMargins);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        if(k.indexOf(constants.autoMarginIdRoot) !== -1) {
            Plots.autoMargin(gd, k);
        }
    }
}

},{"../../constants/alignment":330,"../../lib/svg_text_utils":375,"../../plots/plots":429,"../color":233,"../drawing":257,"../legend/anchor_utils":283,"./constants":319,"d3":62}],322:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var constants = require('./constants');

module.exports = {
    moduleType: 'component',
    name: constants.name,

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    draw: require('./draw')
};

},{"./attributes":318,"./constants":319,"./defaults":320,"./draw":321}],323:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Lib = require('../../lib');
var Drawing = require('../drawing');
var Color = require('../color');
var svgTextUtils = require('../../lib/svg_text_utils');
var interactConstants = require('../../constants/interactions');

var PLACEHOLDER_RE = /Click to enter .+ title/;

var Titles = module.exports = {};

/**
 * Titles - (re)draw titles on the axes and plot:
 * @param {DOM element} gd - the graphDiv
 * @param {string} titleClass - the css class of this title
 * @param {object} options - how and what to draw
 *      propContainer - the layout object containing `title` and `titlefont`
 *          attributes that apply to this title
 *      propName - the full name of the title property (for Plotly.relayout)
 *      [traceIndex] - include only if this property applies to one trace
 *          (such as a colorbar title) - then editing pipes to Plotly.restyle
 *          instead of Plotly.relayout
 *      dfltName - the name of the title in placeholder text
 *      [avoid] {object} - include if this title should move to avoid other elements
 *          selection - d3 selection of elements to avoid
 *          side - which direction to move if there is a conflict
 *          [offsetLeft] - if these elements are subject to a translation
 *              wrt the title element
 *          [offsetTop]
 *      attributes {object} - position and alignment attributes
 *          x - pixels
 *          y - pixels
 *          text-anchor - start|middle|end
 *      transform {object} - how to transform the title after positioning
 *          rotate - degrees
 *          offset - shift up/down in the rotated frame (unused?)
 *      containerGroup - if an svg <g> element already exists to hold this
 *          title, include here. Otherwise it will go in fullLayout._infolayer
 */
Titles.draw = function(gd, titleClass, options) {
    var cont = options.propContainer;
    var prop = options.propName;
    var traceIndex = options.traceIndex;
    var name = options.dfltName;
    var avoid = options.avoid || {};
    var attributes = options.attributes;
    var transform = options.transform;
    var group = options.containerGroup;

    var fullLayout = gd._fullLayout;
    var font = cont.titlefont.family;
    var fontSize = cont.titlefont.size;
    var fontColor = cont.titlefont.color;

    var opacity = 1;
    var isplaceholder = false;
    var txt = cont.title.trim();

    // only make this title editable if we positively identify its property
    // as one that has editing enabled.
    var editAttr;
    if(prop === 'title') editAttr = 'titleText';
    else if(prop.indexOf('axis') !== -1) editAttr = 'axisTitleText';
    else if(prop.indexOf('colorbar' !== -1)) editAttr = 'colorbarTitleText';
    var editable = gd._context.edits[editAttr];

    if(txt === '') opacity = 0;
    if(txt.match(PLACEHOLDER_RE)) {
        opacity = 0.2;
        isplaceholder = true;
        if(!editable) txt = '';
    }

    var elShouldExist = txt || editable;

    if(!group) {
        group = fullLayout._infolayer.selectAll('.g-' + titleClass)
            .data([0]);
        group.enter().append('g')
            .classed('g-' + titleClass, true);
    }

    var el = group.selectAll('text')
        .data(elShouldExist ? [0] : []);
    el.enter().append('text');
    el.text(txt)
        // this is hacky, but convertToTspans uses the class
        // to determine whether to rotate mathJax...
        // so we need to clear out any old class and put the
        // correct one (only relevant for colorbars, at least
        // for now) - ie don't use .classed
        .attr('class', titleClass);
    el.exit().remove();

    if(!elShouldExist) return;

    function titleLayout(titleEl) {
        Lib.syncOrAsync([drawTitle, scootTitle], titleEl);
    }

    function drawTitle(titleEl) {
        titleEl.attr('transform', transform ?
            'rotate(' + [transform.rotate, attributes.x, attributes.y] +
                ') translate(0, ' + transform.offset + ')' :
            null);

        titleEl.style({
            'font-family': font,
            'font-size': d3.round(fontSize, 2) + 'px',
            fill: Color.rgb(fontColor),
            opacity: opacity * Color.opacity(fontColor),
            'font-weight': Plots.fontWeight
        })
        .attr(attributes)
        .call(svgTextUtils.convertToTspans, gd);

        return Plots.previousPromises(gd);
    }

    function scootTitle(titleElIn) {
        var titleGroup = d3.select(titleElIn.node().parentNode);

        if(avoid && avoid.selection && avoid.side && txt) {
            titleGroup.attr('transform', null);

            // move toward avoid.side (= left, right, top, bottom) if needed
            // can include pad (pixels, default 2)
            var shift = 0;
            var backside = {
                left: 'right',
                right: 'left',
                top: 'bottom',
                bottom: 'top'
            }[avoid.side];
            var shiftSign = (['left', 'top'].indexOf(avoid.side) !== -1) ?
                    -1 : 1;
            var pad = isNumeric(avoid.pad) ? avoid.pad : 2;
            var titlebb = Drawing.bBox(titleGroup.node());
            var paperbb = {
                left: 0,
                top: 0,
                right: fullLayout.width,
                bottom: fullLayout.height
            };
            var maxshift = avoid.maxShift || (
                (paperbb[avoid.side] - titlebb[avoid.side]) *
                ((avoid.side === 'left' || avoid.side === 'top') ? -1 : 1));
            // Prevent the title going off the paper
            if(maxshift < 0) shift = maxshift;
            else {
                // so we don't have to offset each avoided element,
                // give the title the opposite offset
                var offsetLeft = avoid.offsetLeft || 0;
                var offsetTop = avoid.offsetTop || 0;
                titlebb.left -= offsetLeft;
                titlebb.right -= offsetLeft;
                titlebb.top -= offsetTop;
                titlebb.bottom -= offsetTop;

                // iterate over a set of elements (avoid.selection)
                // to avoid collisions with
                avoid.selection.each(function() {
                    var avoidbb = Drawing.bBox(this);

                    if(Lib.bBoxIntersect(titlebb, avoidbb, pad)) {
                        shift = Math.max(shift, shiftSign * (
                            avoidbb[avoid.side] - titlebb[backside]) + pad);
                    }
                });
                shift = Math.min(maxshift, shift);
            }
            if(shift > 0 || maxshift < 0) {
                var shiftTemplate = {
                    left: [-shift, 0],
                    right: [shift, 0],
                    top: [0, -shift],
                    bottom: [0, shift]
                }[avoid.side];
                titleGroup.attr('transform',
                    'translate(' + shiftTemplate + ')');
            }
        }
    }

    el.call(titleLayout);

    var placeholderText = 'Click to enter ' + name + ' title';

    function setPlaceholder() {
        opacity = 0;
        isplaceholder = true;
        txt = placeholderText;
        el.text(txt)
            .on('mouseover.opacity', function() {
                d3.select(this).transition()
                    .duration(interactConstants.SHOW_PLACEHOLDER).style('opacity', 1);
            })
            .on('mouseout.opacity', function() {
                d3.select(this).transition()
                    .duration(interactConstants.HIDE_PLACEHOLDER).style('opacity', 0);
            });
    }

    if(editable) {
        if(!txt) setPlaceholder();
        else el.on('.opacity', null);

        el.call(svgTextUtils.makeEditable, {gd: gd})
            .on('edit', function(text) {
                if(traceIndex !== undefined) Plotly.restyle(gd, prop, text, traceIndex);
                else Plotly.relayout(gd, prop, text);
            })
            .on('cancel', function() {
                this.text(this.attr('data-unformatted'))
                    .call(titleLayout);
            })
            .on('input', function(d) {
                this.text(d || ' ')
                    .call(svgTextUtils.positionText, attributes.x, attributes.y);
            });
    }
    el.classed('js-placeholder', isplaceholder);
};

},{"../../constants/interactions":333,"../../lib":353,"../../lib/svg_text_utils":375,"../../plotly":391,"../../plots/plots":429,"../color":233,"../drawing":257,"d3":62,"fast-isnumeric":68}],324:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var colorAttrs = require('../color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var overrideAll = require('../../plot_api/edit_types').overrideAll;
var padAttrs = require('../../plots/pad_attributes');

var buttonsAttrs = {
    _isLinkedToArray: 'button',

    method: {
        valType: 'enumerated',
        values: ['restyle', 'relayout', 'animate', 'update', 'skip'],
        dflt: 'restyle',
        
        
    },
    args: {
        valType: 'info_array',
        
        freeLength: true,
        items: [
            {valType: 'any'},
            {valType: 'any'},
            {valType: 'any'}
        ],
        
    },
    label: {
        valType: 'string',
        
        dflt: '',
        
    },
    execute: {
        valType: 'boolean',
        
        dflt: true,
        
    }
};

module.exports = overrideAll({
    _isLinkedToArray: 'updatemenu',
    _arrayAttrRegexps: [/^updatemenus\[(0|[1-9][0-9]+)\]\.buttons/],

    visible: {
        valType: 'boolean',
        
        
    },

    type: {
        valType: 'enumerated',
        values: ['dropdown', 'buttons'],
        dflt: 'dropdown',
        
        
    },

    direction: {
        valType: 'enumerated',
        values: ['left', 'right', 'up', 'down'],
        dflt: 'down',
        
        
    },

    active: {
        valType: 'integer',
        
        min: -1,
        dflt: 0,
        
    },

    showactive: {
        valType: 'boolean',
        
        dflt: true,
        
    },

    buttons: buttonsAttrs,

    x: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: -0.05,
        
        
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'right',
        
        
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 1,
        
        
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'top',
        
        
    },

    pad: extendFlat({}, padAttrs, {
        
    }),

    font: fontAttrs({
        
    }),

    bgcolor: {
        valType: 'color',
        
        
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttrs.borderLine,
        
        
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'arraydraw',
        
    }
}, 'arraydraw', 'from-root');

},{"../../lib/extend":344,"../../plot_api/edit_types":380,"../../plots/font_attributes":420,"../../plots/pad_attributes":428,"../color/attributes":232}],325:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {

    // layout attribute name
    name: 'updatemenus',

    // class names
    containerClassName: 'updatemenu-container',
    headerGroupClassName: 'updatemenu-header-group',
    headerClassName: 'updatemenu-header',
    headerArrowClassName: 'updatemenu-header-arrow',
    dropdownButtonGroupClassName: 'updatemenu-dropdown-button-group',
    dropdownButtonClassName: 'updatemenu-dropdown-button',
    buttonClassName: 'updatemenu-button',
    itemRectClassName: 'updatemenu-item-rect',
    itemTextClassName: 'updatemenu-item-text',

    // DOM attribute name in button group keeping track
    // of active update menu
    menuIndexAttrName: 'updatemenu-active-index',

    // id root pass to Plots.autoMargin
    autoMarginIdRoot: 'updatemenu-',

    // options when 'active: -1'
    blankHeaderOpts: { label: '  ' },

    // min item width / height
    minWidth: 30,
    minHeight: 30,

    // padding around item text
    textPadX: 24,
    arrowPadX: 16,

    // item rect radii
    rx: 2,
    ry: 2,

    // item  text x offset off left edge
    textOffsetX: 12,

    // item  text y offset (w.r.t. middle)
    textOffsetY: 3,

    // arrow offset off right edge
    arrowOffsetX: 4,

    // gap between header and buttons
    gapButtonHeader: 5,

    // gap between between buttons
    gapButton: 2,

    // color given to active buttons
    activeColor: '#F4FAFF',

    // color given to hovered buttons
    hoverColor: '#F4FAFF',

    // symbol for menu open arrow
    arrowSymbol: {
        left: '◄',
        right: '►',
        up: '▲',
        down: '▼'
    }
};

},{}],326:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');

var attributes = require('./attributes');
var constants = require('./constants');

var name = constants.name;
var buttonAttrs = attributes.buttons;


module.exports = function updateMenusDefaults(layoutIn, layoutOut) {
    var opts = {
        name: name,
        handleItemDefaults: menuDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

function menuDefaults(menuIn, menuOut, layoutOut) {

    function coerce(attr, dflt) {
        return Lib.coerce(menuIn, menuOut, attributes, attr, dflt);
    }

    var buttons = buttonsDefaults(menuIn, menuOut);

    var visible = coerce('visible', buttons.length > 0);
    if(!visible) return;

    coerce('active');
    coerce('direction');
    coerce('type');
    coerce('showactive');

    coerce('x');
    coerce('y');
    Lib.noneOrAll(menuIn, menuOut, ['x', 'y']);

    coerce('xanchor');
    coerce('yanchor');

    coerce('pad.t');
    coerce('pad.r');
    coerce('pad.b');
    coerce('pad.l');

    Lib.coerceFont(coerce, 'font', layoutOut.font);

    coerce('bgcolor', layoutOut.paper_bgcolor);
    coerce('bordercolor');
    coerce('borderwidth');
}

function buttonsDefaults(menuIn, menuOut) {
    var buttonsIn = menuIn.buttons || [],
        buttonsOut = menuOut.buttons = [];

    var buttonIn, buttonOut;

    function coerce(attr, dflt) {
        return Lib.coerce(buttonIn, buttonOut, buttonAttrs, attr, dflt);
    }

    for(var i = 0; i < buttonsIn.length; i++) {
        buttonIn = buttonsIn[i];
        buttonOut = {};

        coerce('method');

        if(!Lib.isPlainObject(buttonIn) || (buttonOut.method !== 'skip' && !Array.isArray(buttonIn.args))) {
            continue;
        }

        coerce('args');
        coerce('label');
        coerce('execute');

        buttonOut._index = i;
        buttonsOut.push(buttonOut);
    }

    return buttonsOut;
}

},{"../../lib":353,"../../plots/array_container_defaults":393,"./attributes":324,"./constants":325}],327:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plots = require('../../plots/plots');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var anchorUtils = require('../legend/anchor_utils');

var LINE_SPACING = require('../../constants/alignment').LINE_SPACING;

var constants = require('./constants');
var ScrollBox = require('./scrollbox');

module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout,
        menuData = makeMenuData(fullLayout);

    /* Update menu data is bound to the header-group.
     * The items in the header group are always present.
     *
     * Upon clicking on a header its corresponding button
     * data is bound to the button-group.
     *
     * We draw all headers in one group before all buttons
     * so that the buttons *always* appear above the headers.
     *
     * Note that only one set of buttons are visible at once.
     *
     * <g container />
     *
     *     <g header-group />
     *         <g item header />
     *         <text item header-arrow />
     *     <g header-group />
     *         <g item header />
     *         <text item header-arrow />
     *     ...
     *
     *     <g button-group />
     *         <g item button />
     *         <g item button />
     *         ...
     */

    // draw update menu container
    var menus = fullLayout._infolayer
        .selectAll('g.' + constants.containerClassName)
        .data(menuData.length > 0 ? [0] : []);

    menus.enter().append('g')
        .classed(constants.containerClassName, true)
        .style('cursor', 'pointer');

    menus.exit().remove();

    // remove push margin object(s)
    if(menus.exit().size()) clearPushMargins(gd);

    // return early if no update menus are visible
    if(menuData.length === 0) return;

    // join header group
    var headerGroups = menus.selectAll('g.' + constants.headerGroupClassName)
        .data(menuData, keyFunction);

    headerGroups.enter().append('g')
        .classed(constants.headerGroupClassName, true);

    // draw dropdown button container
    var gButton = menus.selectAll('g.' + constants.dropdownButtonGroupClassName)
        .data([0]);

    gButton.enter().append('g')
        .classed(constants.dropdownButtonGroupClassName, true)
        .style('pointer-events', 'all');

    // find dimensions before plotting anything (this mutates menuOpts)
    for(var i = 0; i < menuData.length; i++) {
        var menuOpts = menuData[i];
        findDimensions(gd, menuOpts);
    }

    // setup scrollbox
    var scrollBoxId = 'updatemenus' + fullLayout._uid,
        scrollBox = new ScrollBox(gd, gButton, scrollBoxId);

    // remove exiting header, remove dropped buttons and reset margins
    if(headerGroups.enter().size()) {
        gButton
            .call(removeAllButtons)
            .attr(constants.menuIndexAttrName, '-1');
    }

    headerGroups.exit().each(function(menuOpts) {
        d3.select(this).remove();

        gButton
            .call(removeAllButtons)
            .attr(constants.menuIndexAttrName, '-1');

        Plots.autoMargin(gd, constants.autoMarginIdRoot + menuOpts._index);
    });

    // draw headers!
    headerGroups.each(function(menuOpts) {
        var gHeader = d3.select(this);

        var _gButton = menuOpts.type === 'dropdown' ? gButton : null;
        Plots.manageCommandObserver(gd, menuOpts, menuOpts.buttons, function(data) {
            setActive(gd, menuOpts, menuOpts.buttons[data.index], gHeader, _gButton, scrollBox, data.index, true);
        });

        if(menuOpts.type === 'dropdown') {
            drawHeader(gd, gHeader, gButton, scrollBox, menuOpts);

            // if this menu is active, update the dropdown container
            if(isActive(gButton, menuOpts)) {
                drawButtons(gd, gHeader, gButton, scrollBox, menuOpts);
            }
        } else {
            drawButtons(gd, gHeader, null, null, menuOpts);
        }

    });
};

function makeMenuData(fullLayout) {
    var contOpts = fullLayout[constants.name],
        menuData = [];

    // Filter visible dropdowns and attach '_index' to each
    // fullLayout options object to be used for 'object constancy'
    // in the data join key function.

    for(var i = 0; i < contOpts.length; i++) {
        var item = contOpts[i];

        if(item.visible) menuData.push(item);
    }

    return menuData;
}

// Note that '_index' is set at the default step,
// it corresponds to the menu index in the user layout update menu container.
// Because a menu can b set invisible,
// this is a more 'consistent' field than the index in the menuData.
function keyFunction(menuOpts) {
    return menuOpts._index;
}

function isFolded(gButton) {
    return +gButton.attr(constants.menuIndexAttrName) === -1;
}

function isActive(gButton, menuOpts) {
    return +gButton.attr(constants.menuIndexAttrName) === menuOpts._index;
}

function setActive(gd, menuOpts, buttonOpts, gHeader, gButton, scrollBox, buttonIndex, isSilentUpdate) {
    // update 'active' attribute in menuOpts
    menuOpts._input.active = menuOpts.active = buttonIndex;

    if(menuOpts.type === 'buttons') {
        drawButtons(gd, gHeader, null, null, menuOpts);
    }
    else if(menuOpts.type === 'dropdown') {
        // fold up buttons and redraw header
        gButton.attr(constants.menuIndexAttrName, '-1');

        drawHeader(gd, gHeader, gButton, scrollBox, menuOpts);

        if(!isSilentUpdate) {
            drawButtons(gd, gHeader, gButton, scrollBox, menuOpts);
        }
    }
}

function drawHeader(gd, gHeader, gButton, scrollBox, menuOpts) {
    var header = gHeader.selectAll('g.' + constants.headerClassName)
        .data([0]);

    header.enter().append('g')
        .classed(constants.headerClassName, true)
        .style('pointer-events', 'all');

    var active = menuOpts.active,
        headerOpts = menuOpts.buttons[active] || constants.blankHeaderOpts,
        posOpts = { y: menuOpts.pad.t, yPad: 0, x: menuOpts.pad.l, xPad: 0, index: 0 },
        positionOverrides = {
            width: menuOpts.headerWidth,
            height: menuOpts.headerHeight
        };

    header
        .call(drawItem, menuOpts, headerOpts, gd)
        .call(setItemPosition, menuOpts, posOpts, positionOverrides);

    // draw drop arrow at the right edge
    var arrow = gHeader.selectAll('text.' + constants.headerArrowClassName)
        .data([0]);

    arrow.enter().append('text')
        .classed(constants.headerArrowClassName, true)
        .classed('user-select-none', true)
        .attr('text-anchor', 'end')
        .call(Drawing.font, menuOpts.font)
        .text(constants.arrowSymbol[menuOpts.direction]);

    arrow.attr({
        x: menuOpts.headerWidth - constants.arrowOffsetX + menuOpts.pad.l,
        y: menuOpts.headerHeight / 2 + constants.textOffsetY + menuOpts.pad.t
    });

    header.on('click', function() {
        gButton.call(removeAllButtons);


        // if this menu is active, fold the dropdown container
        // otherwise, make this menu active
        gButton.attr(
            constants.menuIndexAttrName,
            isActive(gButton, menuOpts) ?
                -1 :
                String(menuOpts._index)
        );

        drawButtons(gd, gHeader, gButton, scrollBox, menuOpts);
    });

    header.on('mouseover', function() {
        header.call(styleOnMouseOver);
    });

    header.on('mouseout', function() {
        header.call(styleOnMouseOut, menuOpts);
    });

    // translate header group
    Drawing.setTranslate(gHeader, menuOpts.lx, menuOpts.ly);
}

function drawButtons(gd, gHeader, gButton, scrollBox, menuOpts) {
    // If this is a set of buttons, set pointer events = all since we play
    // some minor games with which container is which in order to simplify
    // the drawing of *either* buttons or menus
    if(!gButton) {
        gButton = gHeader;
        gButton.attr('pointer-events', 'all');
    }

    var buttonData = (!isFolded(gButton) || menuOpts.type === 'buttons') ?
        menuOpts.buttons :
        [];

    var klass = menuOpts.type === 'dropdown' ? constants.dropdownButtonClassName : constants.buttonClassName;

    var buttons = gButton.selectAll('g.' + klass)
        .data(buttonData);

    var enter = buttons.enter().append('g')
        .classed(klass, true);

    var exit = buttons.exit();

    if(menuOpts.type === 'dropdown') {
        enter.attr('opacity', '0')
            .transition()
            .attr('opacity', '1');

        exit.transition()
            .attr('opacity', '0')
            .remove();
    } else {
        exit.remove();
    }

    var x0 = 0;
    var y0 = 0;

    var isVertical = ['up', 'down'].indexOf(menuOpts.direction) !== -1;

    if(menuOpts.type === 'dropdown') {
        if(isVertical) {
            y0 = menuOpts.headerHeight + constants.gapButtonHeader;
        } else {
            x0 = menuOpts.headerWidth + constants.gapButtonHeader;
        }
    }

    if(menuOpts.type === 'dropdown' && menuOpts.direction === 'up') {
        y0 = -constants.gapButtonHeader + constants.gapButton - menuOpts.openHeight;
    }

    if(menuOpts.type === 'dropdown' && menuOpts.direction === 'left') {
        x0 = -constants.gapButtonHeader + constants.gapButton - menuOpts.openWidth;
    }

    var posOpts = {
        x: menuOpts.lx + x0 + menuOpts.pad.l,
        y: menuOpts.ly + y0 + menuOpts.pad.t,
        yPad: constants.gapButton,
        xPad: constants.gapButton,
        index: 0,
    };

    var scrollBoxPosition = {
        l: posOpts.x + menuOpts.borderwidth,
        t: posOpts.y + menuOpts.borderwidth
    };

    buttons.each(function(buttonOpts, buttonIndex) {
        var button = d3.select(this);

        button
            .call(drawItem, menuOpts, buttonOpts, gd)
            .call(setItemPosition, menuOpts, posOpts);

        button.on('click', function() {
            // skip `dragend` events
            if(d3.event.defaultPrevented) return;

            setActive(gd, menuOpts, buttonOpts, gHeader, gButton, scrollBox, buttonIndex);

            if(buttonOpts.execute) {
                Plots.executeAPICommand(gd, buttonOpts.method, buttonOpts.args);
            }

            gd.emit('plotly_buttonclicked', {menu: menuOpts, button: buttonOpts, active: menuOpts.active});
        });

        button.on('mouseover', function() {
            button.call(styleOnMouseOver);
        });

        button.on('mouseout', function() {
            button.call(styleOnMouseOut, menuOpts);
            buttons.call(styleButtons, menuOpts);
        });
    });

    buttons.call(styleButtons, menuOpts);

    if(isVertical) {
        scrollBoxPosition.w = Math.max(menuOpts.openWidth, menuOpts.headerWidth);
        scrollBoxPosition.h = posOpts.y - scrollBoxPosition.t;
    }
    else {
        scrollBoxPosition.w = posOpts.x - scrollBoxPosition.l;
        scrollBoxPosition.h = Math.max(menuOpts.openHeight, menuOpts.headerHeight);
    }

    scrollBoxPosition.direction = menuOpts.direction;

    if(scrollBox) {
        if(buttons.size()) {
            drawScrollBox(gd, gHeader, gButton, scrollBox, menuOpts, scrollBoxPosition);
        }
        else {
            hideScrollBox(scrollBox);
        }
    }
}

function drawScrollBox(gd, gHeader, gButton, scrollBox, menuOpts, position) {
    // enable the scrollbox
    var direction = menuOpts.direction,
        isVertical = (direction === 'up' || direction === 'down');

    var active = menuOpts.active,
        translateX, translateY,
        i;
    if(isVertical) {
        translateY = 0;
        for(i = 0; i < active; i++) {
            translateY += menuOpts.heights[i] + constants.gapButton;
        }
    }
    else {
        translateX = 0;
        for(i = 0; i < active; i++) {
            translateX += menuOpts.widths[i] + constants.gapButton;
        }
    }

    scrollBox.enable(position, translateX, translateY);

    if(scrollBox.hbar) {
        scrollBox.hbar
            .attr('opacity', '0')
            .transition()
            .attr('opacity', '1');
    }

    if(scrollBox.vbar) {
        scrollBox.vbar
            .attr('opacity', '0')
            .transition()
            .attr('opacity', '1');
    }
}

function hideScrollBox(scrollBox) {
    var hasHBar = !!scrollBox.hbar,
        hasVBar = !!scrollBox.vbar;

    if(hasHBar) {
        scrollBox.hbar
            .transition()
            .attr('opacity', '0')
            .each('end', function() {
                hasHBar = false;
                if(!hasVBar) scrollBox.disable();
            });
    }

    if(hasVBar) {
        scrollBox.vbar
            .transition()
            .attr('opacity', '0')
            .each('end', function() {
                hasVBar = false;
                if(!hasHBar) scrollBox.disable();
            });
    }
}

function drawItem(item, menuOpts, itemOpts, gd) {
    item.call(drawItemRect, menuOpts)
        .call(drawItemText, menuOpts, itemOpts, gd);
}

function drawItemRect(item, menuOpts) {
    var rect = item.selectAll('rect')
        .data([0]);

    rect.enter().append('rect')
        .classed(constants.itemRectClassName, true)
        .attr({
            rx: constants.rx,
            ry: constants.ry,
            'shape-rendering': 'crispEdges'
        });

    rect.call(Color.stroke, menuOpts.bordercolor)
        .call(Color.fill, menuOpts.bgcolor)
        .style('stroke-width', menuOpts.borderwidth + 'px');
}

function drawItemText(item, menuOpts, itemOpts, gd) {
    var text = item.selectAll('text')
        .data([0]);

    text.enter().append('text')
        .classed(constants.itemTextClassName, true)
        .classed('user-select-none', true)
        .attr({
            'text-anchor': 'start',
            'data-notex': 1
        });

    text.call(Drawing.font, menuOpts.font)
        .text(itemOpts.label)
        .call(svgTextUtils.convertToTspans, gd);
}

function styleButtons(buttons, menuOpts) {
    var active = menuOpts.active;

    buttons.each(function(buttonOpts, i) {
        var button = d3.select(this);

        if(i === active && menuOpts.showactive) {
            button.select('rect.' + constants.itemRectClassName)
                .call(Color.fill, constants.activeColor);
        }
    });
}

function styleOnMouseOver(item) {
    item.select('rect.' + constants.itemRectClassName)
        .call(Color.fill, constants.hoverColor);
}

function styleOnMouseOut(item, menuOpts) {
    item.select('rect.' + constants.itemRectClassName)
        .call(Color.fill, menuOpts.bgcolor);
}

// find item dimensions (this mutates menuOpts)
function findDimensions(gd, menuOpts) {
    menuOpts.width1 = 0;
    menuOpts.height1 = 0;
    menuOpts.heights = [];
    menuOpts.widths = [];
    menuOpts.totalWidth = 0;
    menuOpts.totalHeight = 0;
    menuOpts.openWidth = 0;
    menuOpts.openHeight = 0;
    menuOpts.lx = 0;
    menuOpts.ly = 0;

    var fakeButtons = Drawing.tester.selectAll('g.' + constants.dropdownButtonClassName)
        .data(menuOpts.buttons);

    fakeButtons.enter().append('g')
        .classed(constants.dropdownButtonClassName, true);

    var isVertical = ['up', 'down'].indexOf(menuOpts.direction) !== -1;

    // loop over fake buttons to find width / height
    fakeButtons.each(function(buttonOpts, i) {
        var button = d3.select(this);

        button.call(drawItem, menuOpts, buttonOpts, gd);

        var text = button.select('.' + constants.itemTextClassName);

        // width is given by max width of all buttons
        var tWidth = text.node() && Drawing.bBox(text.node()).width;
        var wEff = Math.max(tWidth + constants.textPadX, constants.minWidth);

        // height is determined by item text
        var tHeight = menuOpts.font.size * LINE_SPACING;
        var tLines = svgTextUtils.lineCount(text);
        var hEff = Math.max(tHeight * tLines, constants.minHeight) + constants.textOffsetY;

        hEff = Math.ceil(hEff);
        wEff = Math.ceil(wEff);

        // Store per-item sizes since a row of horizontal buttons, for example,
        // don't all need to be the same width:
        menuOpts.widths[i] = wEff;
        menuOpts.heights[i] = hEff;

        // Height and width of individual element:
        menuOpts.height1 = Math.max(menuOpts.height1, hEff);
        menuOpts.width1 = Math.max(menuOpts.width1, wEff);

        if(isVertical) {
            menuOpts.totalWidth = Math.max(menuOpts.totalWidth, wEff);
            menuOpts.openWidth = menuOpts.totalWidth;
            menuOpts.totalHeight += hEff + constants.gapButton;
            menuOpts.openHeight += hEff + constants.gapButton;
        } else {
            menuOpts.totalWidth += wEff + constants.gapButton;
            menuOpts.openWidth += wEff + constants.gapButton;
            menuOpts.totalHeight = Math.max(menuOpts.totalHeight, hEff);
            menuOpts.openHeight = menuOpts.totalHeight;
        }
    });

    if(isVertical) {
        menuOpts.totalHeight -= constants.gapButton;
    } else {
        menuOpts.totalWidth -= constants.gapButton;
    }


    menuOpts.headerWidth = menuOpts.width1 + constants.arrowPadX;
    menuOpts.headerHeight = menuOpts.height1;

    if(menuOpts.type === 'dropdown') {
        if(isVertical) {
            menuOpts.width1 += constants.arrowPadX;
            menuOpts.totalHeight = menuOpts.height1;
        } else {
            menuOpts.totalWidth = menuOpts.width1;
        }
        menuOpts.totalWidth += constants.arrowPadX;
    }

    fakeButtons.remove();

    var paddedWidth = menuOpts.totalWidth + menuOpts.pad.l + menuOpts.pad.r;
    var paddedHeight = menuOpts.totalHeight + menuOpts.pad.t + menuOpts.pad.b;

    var graphSize = gd._fullLayout._size;
    menuOpts.lx = graphSize.l + graphSize.w * menuOpts.x;
    menuOpts.ly = graphSize.t + graphSize.h * (1 - menuOpts.y);

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(menuOpts)) {
        menuOpts.lx -= paddedWidth;
        xanchor = 'right';
    }
    if(anchorUtils.isCenterAnchor(menuOpts)) {
        menuOpts.lx -= paddedWidth / 2;
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(menuOpts)) {
        menuOpts.ly -= paddedHeight;
        yanchor = 'bottom';
    }
    if(anchorUtils.isMiddleAnchor(menuOpts)) {
        menuOpts.ly -= paddedHeight / 2;
        yanchor = 'middle';
    }

    menuOpts.totalWidth = Math.ceil(menuOpts.totalWidth);
    menuOpts.totalHeight = Math.ceil(menuOpts.totalHeight);
    menuOpts.lx = Math.round(menuOpts.lx);
    menuOpts.ly = Math.round(menuOpts.ly);

    Plots.autoMargin(gd, constants.autoMarginIdRoot + menuOpts._index, {
        x: menuOpts.x,
        y: menuOpts.y,
        l: paddedWidth * ({right: 1, center: 0.5}[xanchor] || 0),
        r: paddedWidth * ({left: 1, center: 0.5}[xanchor] || 0),
        b: paddedHeight * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: paddedHeight * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

// set item positions (mutates posOpts)
function setItemPosition(item, menuOpts, posOpts, overrideOpts) {
    overrideOpts = overrideOpts || {};
    var rect = item.select('.' + constants.itemRectClassName);
    var text = item.select('.' + constants.itemTextClassName);
    var borderWidth = menuOpts.borderwidth;
    var index = posOpts.index;

    Drawing.setTranslate(item, borderWidth + posOpts.x, borderWidth + posOpts.y);

    var isVertical = ['up', 'down'].indexOf(menuOpts.direction) !== -1;
    var finalHeight = overrideOpts.height || (isVertical ? menuOpts.heights[index] : menuOpts.height1);

    rect.attr({
        x: 0,
        y: 0,
        width: overrideOpts.width || (isVertical ? menuOpts.width1 : menuOpts.widths[index]),
        height: finalHeight
    });

    var tHeight = menuOpts.font.size * LINE_SPACING;
    var tLines = svgTextUtils.lineCount(text);
    var spanOffset = ((tLines - 1) * tHeight / 2);

    svgTextUtils.positionText(text, constants.textOffsetX,
        finalHeight / 2 - spanOffset + constants.textOffsetY);

    if(isVertical) {
        posOpts.y += menuOpts.heights[index] + posOpts.yPad;
    } else {
        posOpts.x += menuOpts.widths[index] + posOpts.xPad;
    }

    posOpts.index++;
}

function removeAllButtons(gButton) {
    gButton.selectAll('g.' + constants.dropdownButtonClassName).remove();
}

function clearPushMargins(gd) {
    var pushMargins = gd._fullLayout._pushmargin || {};
    var keys = Object.keys(pushMargins);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        if(k.indexOf(constants.autoMarginIdRoot) !== -1) {
            Plots.autoMargin(gd, k);
        }
    }
}

},{"../../constants/alignment":330,"../../lib/svg_text_utils":375,"../../plots/plots":429,"../color":233,"../drawing":257,"../legend/anchor_utils":283,"./constants":325,"./scrollbox":329,"d3":62}],328:[function(require,module,exports){
arguments[4][322][0].apply(exports,arguments)
},{"./attributes":324,"./constants":325,"./defaults":326,"./draw":327,"dup":322}],329:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = ScrollBox;

var d3 = require('d3');

var Color = require('../color');
var Drawing = require('../drawing');

var Lib = require('../../lib');

/**
 * Helper class to setup a scroll box
 *
 * @class
 * @param           gd          Plotly's graph div
 * @param           container   Container to be scroll-boxed (as a D3 selection)
 * @param {string}  id          Id for the clip path to implement the scroll box
 */
function ScrollBox(gd, container, id) {
    this.gd = gd;
    this.container = container;
    this.id = id;

    // See ScrollBox.prototype.enable for further definition
    this.position = null;  // scrollbox position
    this.translateX = null;  // scrollbox horizontal translation
    this.translateY = null;  // scrollbox vertical translation
    this.hbar = null;  // horizontal scrollbar D3 selection
    this.vbar = null;  // vertical scrollbar D3 selection

    // <rect> element to capture pointer events
    this.bg = this.container.selectAll('rect.scrollbox-bg').data([0]);

    this.bg.exit()
        .on('.drag', null)
        .on('wheel', null)
        .remove();

    this.bg.enter().append('rect')
        .classed('scrollbox-bg', true)
        .style('pointer-events', 'all')
        .attr({
            opacity: 0,
            x: 0,
            y: 0,
            width: 0,
            height: 0
        });
}

// scroll bar dimensions
ScrollBox.barWidth = 2;
ScrollBox.barLength = 20;
ScrollBox.barRadius = 2;
ScrollBox.barPad = 1;
ScrollBox.barColor = '#808BA4';

/**
 * If needed, setup a clip path and scrollbars
 *
 * @method
 * @param {Object}  position
 * @param {number}  position.l  Left side position (in pixels)
 * @param {number}  position.t  Top side (in pixels)
 * @param {number}  position.w  Width (in pixels)
 * @param {number}  position.h  Height (in pixels)
 * @param {string}  [position.direction='down']
 *                  Either 'down', 'left', 'right' or 'up'
 * @param {number}  [translateX=0]  Horizontal offset (in pixels)
 * @param {number}  [translateY=0]  Vertical offset (in pixels)
 */
ScrollBox.prototype.enable = function enable(position, translateX, translateY) {
    var fullLayout = this.gd._fullLayout,
        fullWidth = fullLayout.width,
        fullHeight = fullLayout.height;

    // compute position of scrollbox
    this.position = position;

    var l = this.position.l,
        w = this.position.w,
        t = this.position.t,
        h = this.position.h,
        direction = this.position.direction,
        isDown = (direction === 'down'),
        isLeft = (direction === 'left'),
        isRight = (direction === 'right'),
        isUp = (direction === 'up'),
        boxW = w,
        boxH = h,
        boxL, boxR,
        boxT, boxB;

    if(!isDown && !isLeft && !isRight && !isUp) {
        this.position.direction = 'down';
        isDown = true;
    }

    var isVertical = isDown || isUp;
    if(isVertical) {
        boxL = l;
        boxR = boxL + boxW;

        if(isDown) {
            // anchor to top side
            boxT = t;
            boxB = Math.min(boxT + boxH, fullHeight);
            boxH = boxB - boxT;
        }
        else {
            // anchor to bottom side
            boxB = t + boxH;
            boxT = Math.max(boxB - boxH, 0);
            boxH = boxB - boxT;
        }
    }
    else {
        boxT = t;
        boxB = boxT + boxH;

        if(isLeft) {
            // anchor to right side
            boxR = l + boxW;
            boxL = Math.max(boxR - boxW, 0);
            boxW = boxR - boxL;
        }
        else {
            // anchor to left side
            boxL = l;
            boxR = Math.min(boxL + boxW, fullWidth);
            boxW = boxR - boxL;
        }
    }

    this._box = {
        l: boxL,
        t: boxT,
        w: boxW,
        h: boxH
    };

    // compute position of horizontal scroll bar
    var needsHorizontalScrollBar = (w > boxW),
        hbarW = ScrollBox.barLength + 2 * ScrollBox.barPad,
        hbarH = ScrollBox.barWidth + 2 * ScrollBox.barPad,
        // draw horizontal scrollbar on the bottom side
        hbarL = l,
        hbarT = t + h;

    if(hbarT + hbarH > fullHeight) hbarT = fullHeight - hbarH;

    var hbar = this.container.selectAll('rect.scrollbar-horizontal').data(
            (needsHorizontalScrollBar) ? [0] : []);

    hbar.exit()
        .on('.drag', null)
        .remove();

    hbar.enter().append('rect')
        .classed('scrollbar-horizontal', true)
        .call(Color.fill, ScrollBox.barColor);

    if(needsHorizontalScrollBar) {
        this.hbar = hbar.attr({
            'rx': ScrollBox.barRadius,
            'ry': ScrollBox.barRadius,
            'x': hbarL,
            'y': hbarT,
            'width': hbarW,
            'height': hbarH
        });

        // hbar center moves between hbarXMin and hbarXMin + hbarTranslateMax
        this._hbarXMin = hbarL + hbarW / 2;
        this._hbarTranslateMax = boxW - hbarW;
    }
    else {
        delete this.hbar;
        delete this._hbarXMin;
        delete this._hbarTranslateMax;
    }

    // compute position of vertical scroll bar
    var needsVerticalScrollBar = (h > boxH),
        vbarW = ScrollBox.barWidth + 2 * ScrollBox.barPad,
        vbarH = ScrollBox.barLength + 2 * ScrollBox.barPad,
        // draw vertical scrollbar on the right side
        vbarL = l + w,
        vbarT = t;

    if(vbarL + vbarW > fullWidth) vbarL = fullWidth - vbarW;

    var vbar = this.container.selectAll('rect.scrollbar-vertical').data(
            (needsVerticalScrollBar) ? [0] : []);

    vbar.exit()
        .on('.drag', null)
        .remove();

    vbar.enter().append('rect')
        .classed('scrollbar-vertical', true)
        .call(Color.fill, ScrollBox.barColor);

    if(needsVerticalScrollBar) {
        this.vbar = vbar.attr({
            'rx': ScrollBox.barRadius,
            'ry': ScrollBox.barRadius,
            'x': vbarL,
            'y': vbarT,
            'width': vbarW,
            'height': vbarH
        });

        // vbar center moves between vbarYMin and vbarYMin + vbarTranslateMax
        this._vbarYMin = vbarT + vbarH / 2;
        this._vbarTranslateMax = boxH - vbarH;
    }
    else {
        delete this.vbar;
        delete this._vbarYMin;
        delete this._vbarTranslateMax;
    }

    // setup a clip path (if scroll bars are needed)
    var clipId = this.id,
        clipL = boxL - 0.5,
        clipR = (needsVerticalScrollBar) ? boxR + vbarW + 0.5 : boxR + 0.5,
        clipT = boxT - 0.5,
        clipB = (needsHorizontalScrollBar) ? boxB + hbarH + 0.5 : boxB + 0.5;

    var clipPath = fullLayout._topdefs.selectAll('#' + clipId)
        .data((needsHorizontalScrollBar || needsVerticalScrollBar) ? [0] : []);

    clipPath.exit().remove();

    clipPath.enter()
        .append('clipPath').attr('id', clipId)
        .append('rect');

    if(needsHorizontalScrollBar || needsVerticalScrollBar) {
        this._clipRect = clipPath.select('rect').attr({
            x: Math.floor(clipL),
            y: Math.floor(clipT),
            width: Math.ceil(clipR) - Math.floor(clipL),
            height: Math.ceil(clipB) - Math.floor(clipT)
        });

        this.container.call(Drawing.setClipUrl, clipId);

        this.bg.attr({
            x: l,
            y: t,
            width: w,
            height: h
        });
    }
    else {
        this.bg.attr({
            width: 0,
            height: 0
        });
        this.container
            .on('wheel', null)
            .on('.drag', null)
            .call(Drawing.setClipUrl, null);
        delete this._clipRect;
    }

    // set up drag listeners (if scroll bars are needed)
    if(needsHorizontalScrollBar || needsVerticalScrollBar) {
        var onBoxDrag = d3.behavior.drag()
            .on('dragstart', function() {
                d3.event.sourceEvent.preventDefault();
            })
            .on('drag', this._onBoxDrag.bind(this));

        this.container
            .on('wheel', null)
            .on('wheel', this._onBoxWheel.bind(this))
            .on('.drag', null)
            .call(onBoxDrag);

        var onBarDrag = d3.behavior.drag()
            .on('dragstart', function() {
                d3.event.sourceEvent.preventDefault();
                d3.event.sourceEvent.stopPropagation();
            })
            .on('drag', this._onBarDrag.bind(this));

        if(needsHorizontalScrollBar) {
            this.hbar
                .on('.drag', null)
                .call(onBarDrag);
        }

        if(needsVerticalScrollBar) {
            this.vbar
                .on('.drag', null)
                .call(onBarDrag);
        }
    }

    // set scrollbox translation
    this.setTranslate(translateX, translateY);
};

/**
 * If present, remove clip-path and scrollbars
 *
 * @method
 */
ScrollBox.prototype.disable = function disable() {
    if(this.hbar || this.vbar) {
        this.bg.attr({
            width: 0,
            height: 0
        });
        this.container
            .on('wheel', null)
            .on('.drag', null)
            .call(Drawing.setClipUrl, null);
        delete this._clipRect;
    }

    if(this.hbar) {
        this.hbar.on('.drag', null);
        this.hbar.remove();
        delete this.hbar;
        delete this._hbarXMin;
        delete this._hbarTranslateMax;
    }

    if(this.vbar) {
        this.vbar.on('.drag', null);
        this.vbar.remove();
        delete this.vbar;
        delete this._vbarYMin;
        delete this._vbarTranslateMax;
    }
};

/**
 * Handles scroll box drag events
 *
 * @method
 */
ScrollBox.prototype._onBoxDrag = function onBarDrag() {
    var translateX = this.translateX,
        translateY = this.translateY;

    if(this.hbar) {
        translateX -= d3.event.dx;
    }

    if(this.vbar) {
        translateY -= d3.event.dy;
    }

    this.setTranslate(translateX, translateY);
};

/**
 * Handles scroll box wheel events
 *
 * @method
 */
ScrollBox.prototype._onBoxWheel = function onBarWheel() {
    var translateX = this.translateX,
        translateY = this.translateY;

    if(this.hbar) {
        translateX += d3.event.deltaY;
    }

    if(this.vbar) {
        translateY += d3.event.deltaY;
    }

    this.setTranslate(translateX, translateY);
};

/**
 * Handles scroll bar drag events
 *
 * @method
 */
ScrollBox.prototype._onBarDrag = function onBarDrag() {
    var translateX = this.translateX,
        translateY = this.translateY;

    if(this.hbar) {
        var xMin = translateX + this._hbarXMin,
            xMax = xMin + this._hbarTranslateMax,
            x = Lib.constrain(d3.event.x, xMin, xMax),
            xf = (x - xMin) / (xMax - xMin);

        var translateXMax = this.position.w - this._box.w;

        translateX = xf * translateXMax;
    }

    if(this.vbar) {
        var yMin = translateY + this._vbarYMin,
            yMax = yMin + this._vbarTranslateMax,
            y = Lib.constrain(d3.event.y, yMin, yMax),
            yf = (y - yMin) / (yMax - yMin);

        var translateYMax = this.position.h - this._box.h;

        translateY = yf * translateYMax;
    }

    this.setTranslate(translateX, translateY);
};

/**
 * Set clip path and scroll bar translate transform
 *
 * @method
 * @param {number}  [translateX=0]  Horizontal offset (in pixels)
 * @param {number}  [translateY=0]  Vertical offset (in pixels)
 */
ScrollBox.prototype.setTranslate = function setTranslate(translateX, translateY) {
    // store translateX and translateY (needed by mouse event handlers)
    var translateXMax = this.position.w - this._box.w,
        translateYMax = this.position.h - this._box.h;

    translateX = Lib.constrain(translateX || 0, 0, translateXMax);
    translateY = Lib.constrain(translateY || 0, 0, translateYMax);

    this.translateX = translateX;
    this.translateY = translateY;

    this.container.call(Drawing.setTranslate,
        this._box.l - this.position.l - translateX,
        this._box.t - this.position.t - translateY);

    if(this._clipRect) {
        this._clipRect.attr({
            x: Math.floor(this.position.l + translateX - 0.5),
            y: Math.floor(this.position.t + translateY - 0.5)
        });
    }

    if(this.hbar) {
        var xf = translateX / translateXMax;

        this.hbar.call(Drawing.setTranslate,
            translateX + xf * this._hbarTranslateMax,
            translateY);
    }

    if(this.vbar) {
        var yf = translateY / translateYMax;

        this.vbar.call(Drawing.setTranslate,
            translateX,
            translateY + yf * this._vbarTranslateMax);
    }
};

},{"../../lib":353,"../color":233,"../drawing":257,"d3":62}],330:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// fraction of some size to get to a named position
module.exports = {
    // from bottom left: this is the origin of our paper-reference
    // positioning system
    FROM_BL: {
        left: 0,
        center: 0.5,
        right: 1,
        bottom: 0,
        middle: 0.5,
        top: 1
    },
    // from top left: this is the screen pixel positioning origin
    FROM_TL: {
        left: 0,
        center: 0.5,
        right: 1,
        bottom: 1,
        middle: 0.5,
        top: 0
    },
    // multiple of fontSize to get the vertical offset between lines
    LINE_SPACING: 1.3,

    // multiple of fontSize to shift from the baseline to the midline
    // (to use when we don't calculate this shift from Drawing.bBox)
    // To be precise this should be half the cap height (capital letter)
    // of the font, and according to wikipedia:
    //   an "average" font might have a cap height of 70% of the em
    // https://en.wikipedia.org/wiki/Em_(typography)#History
    MID_SHIFT: 0.35
};

},{}],331:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = {
    solid: [1],
    dot: [1, 1],
    dash: [4, 1],
    longdash: [8, 1],
    dashdot: [4, 1, 1, 1],
    longdashdot: [8, 1, 1, 1]
};

},{}],332:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var extendFlat = require('../lib/extend').extendFlat;

var symbolsWithOpenSupport = {
    'circle': {
        unicode: '●'
    },
    'square': {
        unicode: '■'
    },
    'diamond': {
        unicode: '◆'
    },
    'cross': {
        unicode: '✚'
    },
    'x': {
        unicode: '❌'
    },
    'triangle-up': {
        unicode: '▲'
    },
    'triangle-down': {
        unicode: '▼'
    },
    'triangle-left': {
        unicode: '◄'
    },
    'triangle-right': {
        unicode: '►'
    },
    'triangle-ne': {
        unicode: '◥'
    },
    'triangle-nw': {
        unicode: '◤'
    },
    'triangle-se': {
        unicode: '◢'
    },
    'triangle-sw': {
        unicode: '◣'
    },
    'pentagon': {
        unicode: '⬟'
    },
    'hexagon': {
        unicode: '⬢'
    },
    'hexagon2': {
        unicode: '⬣'
    },
    'star': {
        unicode: '★'
    },
    'diamond-tall': {
        unicode: '♦'
    },
    'bowtie': {
        unicode: '⧓'
    },
    'diamond-x': {
        unicode: '❖'
    },
    'cross-thin': {
        unicode: '+',
        noBorder: true
    },
    'asterisk': {
        unicode: '✳',
        noBorder: true
    },
    'y-up': {
        unicode: '⅄',
        noBorder: true
    },
    'y-down': {
        unicode: 'Y',
        noBorder: true
    },
    'line-ew': {
        unicode: '─',
        noBorder: true
    },
    'line-ns': {
        unicode: '│',
        noBorder: true
    }
};

var openSymbols = {};
var keys = Object.keys(symbolsWithOpenSupport);

for(var i = 0; i < keys.length; i++) {
    var k = keys[i];
    openSymbols[k + '-open'] = extendFlat({}, symbolsWithOpenSupport[k]);
}

var otherSymbols = {
    'circle-cross-open': {
        unicode: '⨁',
        noFill: true
    },
    'circle-x-open': {
        unicode: '⨂',
        noFill: true
    },
    'square-cross-open': {
        unicode: '⊞',
        noFill: true
    },
    'square-x-open': {
        unicode: '⊠',
        noFill: true
    }
};

module.exports = extendFlat({},
    symbolsWithOpenSupport,
    openSymbols,
    otherSymbols
);

},{"../lib/extend":344}],333:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    /**
     * Timing information for interactive elements
     */
    SHOW_PLACEHOLDER: 100,
    HIDE_PLACEHOLDER: 1000,

    // ms between first mousedown and 2nd mouseup to constitute dblclick...
    // we don't seem to have access to the system setting
    DBLCLICKDELAY: 300,

    // opacity dimming fraction for points that are not in selection
    DESELECTDIM: 0.2
};

},{}],334:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    /**
     * Standardize all missing data in calcdata to use undefined
     * never null or NaN.
     * That way we can use !==undefined, or !== BADNUM,
     * to test for real data
     */
    BADNUM: undefined,

    /*
     * Limit certain operations to well below floating point max value
     * to avoid glitches: Make sure that even when you multiply it by the
     * number of pixels on a giant screen it still works
     */
    FP_SAFE: Number.MAX_VALUE / 10000,

    /*
     * conversion of date units to milliseconds
     * year and month constants are marked "AVG"
     * to remind us that not all years and months
     * have the same length
     */
    ONEAVGYEAR: 31557600000, // 365.25 days
    ONEAVGMONTH: 2629800000, // 1/12 of ONEAVGYEAR
    ONEDAY: 86400000,
    ONEHOUR: 3600000,
    ONEMIN: 60000,
    ONESEC: 1000,

    /*
     * For fast conversion btwn world calendars and epoch ms, the Julian Day Number
     * of the unix epoch. From calendars.instance().newDate(1970, 1, 1).toJD()
     */
    EPOCHJD: 2440587.5,

    /*
     * Are two values nearly equal? Compare to 1PPM
     */
    ALMOST_EQUAL: 1 - 1e-6,

    /*
     * not a number, but for displaying numbers: the "minus sign" symbol is
     * wider than the regular ascii dash "-"
     */
    MINUS_SIGN: '\u2212'
};

},{}],335:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// N.B. HTML entities are listed without the leading '&' and trailing ';'
// https://www.freeformatter.com/html-entities.html

module.exports = {
    entityToUnicode: {
        'mu': 'μ',
        '#956': 'μ',

        'amp': '&',
        '#28': '&',

        'lt': '<',
        '#60': '<',

        'gt': '>',
        '#62': '>',

        'nbsp': ' ',
        '#160': ' ',

        'times': '×',
        '#215': '×',

        'plusmn': '±',
        '#177': '±',

        'deg': '°',
        '#176': '°'
    }
};

},{}],336:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


exports.xmlns = 'http://www.w3.org/2000/xmlns/';
exports.svg = 'http://www.w3.org/2000/svg';
exports.xlink = 'http://www.w3.org/1999/xlink';

// the 'old' d3 quirk got fix in v3.5.7
// https://github.com/mbostock/d3/commit/a6f66e9dd37f764403fc7c1f26be09ab4af24fed
exports.svgAttrs = {
    xmlns: exports.svg,
    'xmlns:xlink': exports.xlink
};

},{}],337:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/*
 * Export the plotly.js API methods.
 */

var Plotly = require('./plotly');

// package version injected by `npm run preprocess`
exports.version = '1.31.2';

// inject promise polyfill
require('es6-promise').polyfill();

// inject plot css
require('../build/plotcss');

// inject default MathJax config
require('./fonts/mathjax_config');

// plot api
exports.plot = Plotly.plot;
exports.newPlot = Plotly.newPlot;
exports.restyle = Plotly.restyle;
exports.relayout = Plotly.relayout;
exports.redraw = Plotly.redraw;
exports.update = Plotly.update;
exports.extendTraces = Plotly.extendTraces;
exports.prependTraces = Plotly.prependTraces;
exports.addTraces = Plotly.addTraces;
exports.deleteTraces = Plotly.deleteTraces;
exports.moveTraces = Plotly.moveTraces;
exports.purge = Plotly.purge;
exports.setPlotConfig = require('./plot_api/set_plot_config');
exports.register = require('./plot_api/register');
exports.toImage = require('./plot_api/to_image');
exports.downloadImage = require('./snapshot/download');
exports.validate = require('./plot_api/validate');
exports.addFrames = Plotly.addFrames;
exports.deleteFrames = Plotly.deleteFrames;
exports.animate = Plotly.animate;

// scatter is the only trace included by default
exports.register(require('./traces/scatter'));

// register all registrable components modules
exports.register([
    require('./components/fx'),
    require('./components/legend'),
    require('./components/annotations'),
    require('./components/annotations3d'),
    require('./components/shapes'),
    require('./components/images'),
    require('./components/updatemenus'),
    require('./components/sliders'),
    require('./components/rangeslider'),
    require('./components/rangeselector')
]);

// plot icons
exports.Icons = require('../build/ploticon');

// unofficial 'beta' plot methods, use at your own risk
exports.Plots = Plotly.Plots;
exports.Fx = require('./components/fx');
exports.Snapshot = require('./snapshot');
exports.PlotSchema = require('./plot_api/plot_schema');
exports.Queue = require('./lib/queue');

// export d3 used in the bundle
exports.d3 = require('d3');

},{"../build/plotcss":1,"../build/ploticon":2,"./components/annotations":226,"./components/annotations3d":231,"./components/fx":274,"./components/images":282,"./components/legend":291,"./components/rangeselector":303,"./components/rangeslider":309,"./components/shapes":316,"./components/sliders":322,"./components/updatemenus":328,"./fonts/mathjax_config":338,"./lib/queue":366,"./plot_api/plot_schema":385,"./plot_api/register":386,"./plot_api/set_plot_config":387,"./plot_api/to_image":389,"./plot_api/validate":390,"./plotly":391,"./snapshot":441,"./snapshot/download":438,"./traces/scatter":502,"d3":62,"es6-promise":66}],338:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/* global MathJax:false */

/**
 * Check and configure MathJax
 */
if(typeof MathJax !== 'undefined') {
    exports.MathJax = true;

    MathJax.Hub.Config({
        messageStyle: 'none',
        skipStartupTypeset: true,
        displayAlign: 'left',
        tex2jax: {
            inlineMath: [['$', '$'], ['\\(', '\\)']]
        }
    });

    MathJax.Hub.Configured();
} else {
    exports.MathJax = false;
}

},{}],339:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var BADNUM = require('../constants/numerical').BADNUM;

// precompile for speed
var JUNK = /^['"%,$#\s']+|[, ]|['"%,$#\s']+$/g;

/**
 * cleanNumber: remove common leading and trailing cruft
 * Always returns either a number or BADNUM.
 */
module.exports = function cleanNumber(v) {
    if(typeof v === 'string') {
        v = v.replace(JUNK, '');
    }

    if(isNumeric(v)) return Number(v);

    return BADNUM;
};

},{"../constants/numerical":334,"fast-isnumeric":68}],340:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var tinycolor = require('tinycolor2');

var baseTraceAttrs = require('../plots/attributes');
var getColorscale = require('../components/colorscale/get_scale');
var colorscaleNames = Object.keys(require('../components/colorscale/scales'));
var nestedProperty = require('./nested_property');
var counterRegex = require('./regex').counter;

exports.valObjectMeta = {
    data_array: {
        // You can use *dflt=[] to force said array to exist though.
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            if(Array.isArray(v)) propOut.set(v);
            else if(dflt !== undefined) propOut.set(dflt);
        }
    },
    enumerated: {
        
        
        
        coerceFunction: function(v, propOut, dflt, opts) {
            if(opts.coerceNumber) v = +v;
            if(opts.values.indexOf(v) === -1) propOut.set(dflt);
            else propOut.set(v);
        },
        validateFunction: function(v, opts) {
            if(opts.coerceNumber) v = +v;

            var values = opts.values;
            for(var i = 0; i < values.length; i++) {
                var k = String(values[i]);

                if((k.charAt(0) === '/' && k.charAt(k.length - 1) === '/')) {
                    var regex = new RegExp(k.substr(1, k.length - 2));
                    if(regex.test(v)) return true;
                } else if(v === values[i]) return true;
            }
            return false;
        }
    },
    'boolean': {
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            if(v === true || v === false) propOut.set(v);
            else propOut.set(dflt);
        }
    },
    number: {
        
        
        
        coerceFunction: function(v, propOut, dflt, opts) {
            if(!isNumeric(v) ||
                    (opts.min !== undefined && v < opts.min) ||
                    (opts.max !== undefined && v > opts.max)) {
                propOut.set(dflt);
            }
            else propOut.set(+v);
        }
    },
    integer: {
        
        
        
        coerceFunction: function(v, propOut, dflt, opts) {
            if(v % 1 || !isNumeric(v) ||
                    (opts.min !== undefined && v < opts.min) ||
                    (opts.max !== undefined && v > opts.max)) {
                propOut.set(dflt);
            }
            else propOut.set(+v);
        }
    },
    string: {
        
        
        // TODO 'values shouldn't be in there (edge case: 'dash' in Scatter)
        
        coerceFunction: function(v, propOut, dflt, opts) {
            if(typeof v !== 'string') {
                var okToCoerce = (typeof v === 'number');

                if(opts.strict === true || !okToCoerce) propOut.set(dflt);
                else propOut.set(String(v));
            }
            else if(opts.noBlank && !v) propOut.set(dflt);
            else propOut.set(v);
        }
    },
    color: {
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            if(tinycolor(v).isValid()) propOut.set(v);
            else propOut.set(dflt);
        }
    },
    colorscale: {
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            propOut.set(getColorscale(v, dflt));
        }
    },
    angle: {
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            if(v === 'auto') propOut.set('auto');
            else if(!isNumeric(v)) propOut.set(dflt);
            else {
                if(Math.abs(v) > 180) v -= Math.round(v / 360) * 360;
                propOut.set(+v);
            }
        }
    },
    subplotid: {
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            if(typeof v === 'string' && counterRegex(dflt).test(v)) {
                propOut.set(v);
                return;
            }
            propOut.set(dflt);
        },
        validateFunction: function(v, opts) {
            var dflt = opts.dflt;

            if(v === dflt) return true;
            if(typeof v !== 'string') return false;
            if(counterRegex(dflt).test(v)) return true;

            return false;
        }
    },
    flaglist: {
        
        
        
        coerceFunction: function(v, propOut, dflt, opts) {
            if(typeof v !== 'string') {
                propOut.set(dflt);
                return;
            }
            if((opts.extras || []).indexOf(v) !== -1) {
                propOut.set(v);
                return;
            }
            var vParts = v.split('+'),
                i = 0;
            while(i < vParts.length) {
                var vi = vParts[i];
                if(opts.flags.indexOf(vi) === -1 || vParts.indexOf(vi) < i) {
                    vParts.splice(i, 1);
                }
                else i++;
            }
            if(!vParts.length) propOut.set(dflt);
            else propOut.set(vParts.join('+'));
        }
    },
    any: {
        
        
        
        coerceFunction: function(v, propOut, dflt) {
            if(v === undefined) propOut.set(dflt);
            else propOut.set(v);
        }
    },
    info_array: {
        
        
        
        coerceFunction: function(v, propOut, dflt, opts) {
            if(!Array.isArray(v)) {
                propOut.set(dflt);
                return;
            }

            var items = opts.items,
                vOut = [];
            dflt = Array.isArray(dflt) ? dflt : [];

            for(var i = 0; i < items.length; i++) {
                exports.coerce(v, vOut, items, '[' + i + ']', dflt[i]);
            }

            propOut.set(vOut);
        },
        validateFunction: function(v, opts) {
            if(!Array.isArray(v)) return false;

            var items = opts.items;

            // when free length is off, input and declared lengths must match
            if(!opts.freeLength && v.length !== items.length) return false;

            // valid when all input items are valid
            for(var i = 0; i < v.length; i++) {
                var isItemValid = exports.validate(v[i], opts.items[i]);

                if(!isItemValid) return false;
            }

            return true;
        }
    }
};

/**
 * Ensures that container[attribute] has a valid value.
 *
 * attributes[attribute] is an object with possible keys:
 * - valType: data_array, enumerated, boolean, ... as in valObjectMeta
 * - values: (enumerated only) array of allowed vals
 * - min, max: (number, integer only) inclusive bounds on allowed vals
 *      either or both may be omitted
 * - dflt: if attribute is invalid or missing, use this default
 *      if dflt is provided as an argument to lib.coerce it takes precedence
 *      as a convenience, returns the value it finally set
 */
exports.coerce = function(containerIn, containerOut, attributes, attribute, dflt) {
    var opts = nestedProperty(attributes, attribute).get(),
        propIn = nestedProperty(containerIn, attribute),
        propOut = nestedProperty(containerOut, attribute),
        v = propIn.get();

    if(dflt === undefined) dflt = opts.dflt;

    /**
     * arrayOk: value MAY be an array, then we do no value checking
     * at this point, because it can be more complicated than the
     * individual form (eg. some array vals can be numbers, even if the
     * single values must be color strings)
     */
    if(opts.arrayOk && Array.isArray(v)) {
        propOut.set(v);
        return v;
    }

    exports.valObjectMeta[opts.valType].coerceFunction(v, propOut, dflt, opts);

    return propOut.get();
};

/**
 * Variation on coerce
 *
 * Uses coerce to get attribute value if user input is valid,
 * returns attribute default if user input it not valid or
 * returns false if there is no user input.
 */
exports.coerce2 = function(containerIn, containerOut, attributes, attribute, dflt) {
    var propIn = nestedProperty(containerIn, attribute),
        propOut = exports.coerce(containerIn, containerOut, attributes, attribute, dflt),
        valIn = propIn.get();

    return (valIn !== undefined && valIn !== null) ? propOut : false;
};

/*
 * Shortcut to coerce the three font attributes
 *
 * 'coerce' is a lib.coerce wrapper with implied first three arguments
 */
exports.coerceFont = function(coerce, attr, dfltObj) {
    var out = {};

    dfltObj = dfltObj || {};

    out.family = coerce(attr + '.family', dfltObj.family);
    out.size = coerce(attr + '.size', dfltObj.size);
    out.color = coerce(attr + '.color', dfltObj.color);

    return out;
};

/** Coerce shortcut for 'hoverinfo'
 * handling 1-vs-multi-trace dflt logic
 *
 * @param {object} traceIn : user trace object
 * @param {object} traceOut : full trace object (requires _module ref)
 * @param {object} layoutOut : full layout object (require _dataLength ref)
 * @return {any} : the coerced value
 */
exports.coerceHoverinfo = function(traceIn, traceOut, layoutOut) {
    var moduleAttrs = traceOut._module.attributes;
    var attrs = moduleAttrs.hoverinfo ?
        {hoverinfo: moduleAttrs.hoverinfo} :
        baseTraceAttrs;

    var valObj = attrs.hoverinfo;
    var dflt;

    if(layoutOut._dataLength === 1) {
        var flags = valObj.dflt === 'all' ?
            valObj.flags.slice() :
            valObj.dflt.split('+');

        flags.splice(flags.indexOf('name'), 1);
        dflt = flags.join('+');
    }

    return exports.coerce(traceIn, traceOut, attrs, 'hoverinfo', dflt);
};

exports.validate = function(value, opts) {
    var valObjectDef = exports.valObjectMeta[opts.valType];

    if(opts.arrayOk && Array.isArray(value)) return true;

    if(valObjectDef.validateFunction) {
        return valObjectDef.validateFunction(value, opts);
    }

    var failed = {},
        out = failed,
        propMock = { set: function(v) { out = v; } };

    // 'failed' just something mutable that won't be === anything else

    valObjectDef.coerceFunction(value, propMock, failed, opts);
    return out !== failed;
};

},{"../components/colorscale/get_scale":245,"../components/colorscale/scales":251,"../plots/attributes":394,"./nested_property":360,"./regex":367,"fast-isnumeric":68,"tinycolor2":200}],341:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var logError = require('./loggers').error;
var mod = require('./mod');

var constants = require('../constants/numerical');
var BADNUM = constants.BADNUM;
var ONEDAY = constants.ONEDAY;
var ONEHOUR = constants.ONEHOUR;
var ONEMIN = constants.ONEMIN;
var ONESEC = constants.ONESEC;
var EPOCHJD = constants.EPOCHJD;

var Registry = require('../registry');

var utcFormat = d3.time.format.utc;

var DATETIME_REGEXP = /^\s*(-?\d\d\d\d|\d\d)(-(\d?\d)(-(\d?\d)([ Tt]([01]?\d|2[0-3])(:([0-5]\d)(:([0-5]\d(\.\d+)?))?(Z|z|[+\-]\d\d:?\d\d)?)?)?)?)?\s*$/m;
// special regex for chinese calendars to support yyyy-mmi-dd etc for intercalary months
var DATETIME_REGEXP_CN = /^\s*(-?\d\d\d\d|\d\d)(-(\d?\di?)(-(\d?\d)([ Tt]([01]?\d|2[0-3])(:([0-5]\d)(:([0-5]\d(\.\d+)?))?(Z|z|[+\-]\d\d:?\d\d)?)?)?)?)?\s*$/m;

// for 2-digit years, the first year we map them onto
var YFIRST = new Date().getFullYear() - 70;

function isWorldCalendar(calendar) {
    return (
        calendar &&
        Registry.componentsRegistry.calendars &&
        typeof calendar === 'string' && calendar !== 'gregorian'
    );
}

/*
 * dateTick0: get the canonical tick for this calendar
 *
 * bool sunday is for week ticks, shift it to a Sunday.
 */
exports.dateTick0 = function(calendar, sunday) {
    if(isWorldCalendar(calendar)) {
        return sunday ?
            Registry.getComponentMethod('calendars', 'CANONICAL_SUNDAY')[calendar] :
            Registry.getComponentMethod('calendars', 'CANONICAL_TICK')[calendar];
    }
    else {
        return sunday ? '2000-01-02' : '2000-01-01';
    }
};

/*
 * dfltRange: for each calendar, give a valid default range
 */
exports.dfltRange = function(calendar) {
    if(isWorldCalendar(calendar)) {
        return Registry.getComponentMethod('calendars', 'DFLTRANGE')[calendar];
    }
    else {
        return ['2000-01-01', '2001-01-01'];
    }
};

// is an object a javascript date?
exports.isJSDate = function(v) {
    return typeof v === 'object' && v !== null && typeof v.getTime === 'function';
};

// The absolute limits of our date-time system
// This is a little weird: we use MIN_MS and MAX_MS in dateTime2ms
// but we use dateTime2ms to calculate them (after defining it!)
var MIN_MS, MAX_MS;

/**
 * dateTime2ms - turn a date object or string s into milliseconds
 * (relative to 1970-01-01, per javascript standard)
 * optional calendar (string) to use a non-gregorian calendar
 *
 * Returns BADNUM if it doesn't find a date
 *
 * strings should have the form:
 *
 *    -?YYYY-mm-dd<sep>HH:MM:SS.sss<tzInfo>?
 *
 * <sep>: space (our normal standard) or T or t (ISO-8601)
 * <tzInfo>: Z, z, or [+\-]HH:?MM and we THROW IT AWAY
 * this format comes from https://tools.ietf.org/html/rfc3339#section-5.6
 * but we allow it even with a space as the separator
 *
 * May truncate after any full field, and sss can be any length
 * even >3 digits, though javascript dates truncate to milliseconds,
 * we keep as much as javascript numeric precision can hold, but we only
 * report back up to 100 microsecond precision, because most dates support
 * this precision (close to 1970 support more, very far away support less)
 *
 * Expanded to support negative years to -9999 but you must always
 * give 4 digits, except for 2-digit positive years which we assume are
 * near the present time.
 * Note that we follow ISO 8601:2004: there *is* a year 0, which
 * is 1BC/BCE, and -1===2BC etc.
 *
 * World calendars: not all of these *have* agreed extensions to this full range,
 * if you have another calendar system but want a date range outside its validity,
 * you can use a gregorian date string prefixed with 'G' or 'g'.
 *
 * Where to cut off 2-digit years between 1900s and 2000s?
 * from http://support.microsoft.com/kb/244664:
 *   1930-2029 (the most retro of all...)
 * but in my mac chrome from eg. d=new Date(Date.parse('8/19/50')):
 *   1950-2049
 * by Java, from http://stackoverflow.com/questions/2024273/:
 *   now-80 - now+19
 * or FileMaker Pro, from
 *      http://www.filemaker.com/12help/html/add_view_data.4.21.html:
 *   now-70 - now+29
 * but python strptime etc, via
 *      http://docs.python.org/py3k/library/time.html:
 *   1969-2068 (super forward-looking, but static, not sliding!)
 *
 * lets go with now-70 to now+29, and if anyone runs into this problem
 * they can learn the hard way not to use 2-digit years, as no choice we
 * make now will cover all possibilities. mostly this will all be taken
 * care of in initial parsing, should only be an issue for hand-entered data
 * currently (2016) this range is:
 *   1946-2045
 */
exports.dateTime2ms = function(s, calendar) {
    // first check if s is a date object
    if(exports.isJSDate(s)) {
        // Convert to the UTC milliseconds that give the same
        // hours as this date has in the local timezone
        s = Number(s) - s.getTimezoneOffset() * ONEMIN;
        if(s >= MIN_MS && s <= MAX_MS) return s;
        return BADNUM;
    }
    // otherwise only accept strings and numbers
    if(typeof s !== 'string' && typeof s !== 'number') return BADNUM;

    s = String(s);

    var isWorld = isWorldCalendar(calendar);

    // to handle out-of-range dates in international calendars, accept
    // 'G' as a prefix to force the built-in gregorian calendar.
    var s0 = s.charAt(0);
    if(isWorld && (s0 === 'G' || s0 === 'g')) {
        s = s.substr(1);
        calendar = '';
    }

    var isChinese = isWorld && calendar.substr(0, 7) === 'chinese';

    var match = s.match(isChinese ? DATETIME_REGEXP_CN : DATETIME_REGEXP);
    if(!match) return BADNUM;
    var y = match[1],
        m = match[3] || '1',
        d = Number(match[5] || 1),
        H = Number(match[7] || 0),
        M = Number(match[9] || 0),
        S = Number(match[11] || 0);

    if(isWorld) {
        // disallow 2-digit years for world calendars
        if(y.length === 2) return BADNUM;
        y = Number(y);

        var cDate;
        try {
            var calInstance = Registry.getComponentMethod('calendars', 'getCal')(calendar);
            if(isChinese) {
                var isIntercalary = m.charAt(m.length - 1) === 'i';
                m = parseInt(m, 10);
                cDate = calInstance.newDate(y, calInstance.toMonthIndex(y, m, isIntercalary), d);
            }
            else {
                cDate = calInstance.newDate(y, Number(m), d);
            }
        }
        catch(e) { return BADNUM; } // Invalid ... date

        if(!cDate) return BADNUM;

        return ((cDate.toJD() - EPOCHJD) * ONEDAY) +
            (H * ONEHOUR) + (M * ONEMIN) + (S * ONESEC);
    }

    if(y.length === 2) {
        y = (Number(y) + 2000 - YFIRST) % 100 + YFIRST;
    }
    else y = Number(y);

    // new Date uses months from 0; subtract 1 here just so we
    // don't have to do it again during the validity test below
    m -= 1;

    // javascript takes new Date(0..99,m,d) to mean 1900-1999, so
    // to support years 0-99 we need to use setFullYear explicitly
    // Note that 2000 is a leap year.
    var date = new Date(Date.UTC(2000, m, d, H, M));
    date.setUTCFullYear(y);

    if(date.getUTCMonth() !== m) return BADNUM;
    if(date.getUTCDate() !== d) return BADNUM;

    return date.getTime() + S * ONESEC;
};

MIN_MS = exports.MIN_MS = exports.dateTime2ms('-9999');
MAX_MS = exports.MAX_MS = exports.dateTime2ms('9999-12-31 23:59:59.9999');

// is string s a date? (see above)
exports.isDateTime = function(s, calendar) {
    return (exports.dateTime2ms(s, calendar) !== BADNUM);
};

// pad a number with zeroes, to given # of digits before the decimal point
function lpad(val, digits) {
    return String(val + Math.pow(10, digits)).substr(1);
}

/**
 * Turn ms into string of the form YYYY-mm-dd HH:MM:SS.ssss
 * Crop any trailing zeros in time, except never stop right after hours
 * (we could choose to crop '-01' from date too but for now we always
 * show the whole date)
 * Optional range r is the data range that applies, also in ms.
 * If rng is big, the later parts of time will be omitted
 */
var NINETYDAYS = 90 * ONEDAY;
var THREEHOURS = 3 * ONEHOUR;
var FIVEMIN = 5 * ONEMIN;
exports.ms2DateTime = function(ms, r, calendar) {
    if(typeof ms !== 'number' || !(ms >= MIN_MS && ms <= MAX_MS)) return BADNUM;

    if(!r) r = 0;

    var msecTenths = Math.floor(mod(ms + 0.05, 1) * 10),
        msRounded = Math.round(ms - msecTenths / 10),
        dateStr, h, m, s, msec10, d;

    if(isWorldCalendar(calendar)) {
        var dateJD = Math.floor(msRounded / ONEDAY) + EPOCHJD,
            timeMs = Math.floor(mod(ms, ONEDAY));
        try {
            dateStr = Registry.getComponentMethod('calendars', 'getCal')(calendar)
                .fromJD(dateJD).formatDate('yyyy-mm-dd');
        }
        catch(e) {
            // invalid date in this calendar - fall back to Gyyyy-mm-dd
            dateStr = utcFormat('G%Y-%m-%d')(new Date(msRounded));
        }

        // yyyy does NOT guarantee 4-digit years. YYYY mostly does, but does
        // other things for a few calendars, so we can't trust it. Just pad
        // it manually (after the '-' if there is one)
        if(dateStr.charAt(0) === '-') {
            while(dateStr.length < 11) dateStr = '-0' + dateStr.substr(1);
        }
        else {
            while(dateStr.length < 10) dateStr = '0' + dateStr;
        }

        // TODO: if this is faster, we could use this block for extracting
        // the time components of regular gregorian too
        h = (r < NINETYDAYS) ? Math.floor(timeMs / ONEHOUR) : 0;
        m = (r < NINETYDAYS) ? Math.floor((timeMs % ONEHOUR) / ONEMIN) : 0;
        s = (r < THREEHOURS) ? Math.floor((timeMs % ONEMIN) / ONESEC) : 0;
        msec10 = (r < FIVEMIN) ? (timeMs % ONESEC) * 10 + msecTenths : 0;
    }
    else {
        d = new Date(msRounded);

        dateStr = utcFormat('%Y-%m-%d')(d);

        // <90 days: add hours and minutes - never *only* add hours
        h = (r < NINETYDAYS) ? d.getUTCHours() : 0;
        m = (r < NINETYDAYS) ? d.getUTCMinutes() : 0;
        // <3 hours: add seconds
        s = (r < THREEHOURS) ? d.getUTCSeconds() : 0;
        // <5 minutes: add ms (plus one extra digit, this is msec*10)
        msec10 = (r < FIVEMIN) ? d.getUTCMilliseconds() * 10 + msecTenths : 0;
    }

    return includeTime(dateStr, h, m, s, msec10);
};

// For converting old-style milliseconds to date strings,
// we use the local timezone rather than UTC like we use
// everywhere else, both for backward compatibility and
// because that's how people mostly use javasript date objects.
// Clip one extra day off our date range though so we can't get
// thrown beyond the range by the timezone shift.
exports.ms2DateTimeLocal = function(ms) {
    if(!(ms >= MIN_MS + ONEDAY && ms <= MAX_MS - ONEDAY)) return BADNUM;

    var msecTenths = Math.floor(mod(ms + 0.05, 1) * 10),
        d = new Date(Math.round(ms - msecTenths / 10)),
        dateStr = d3.time.format('%Y-%m-%d')(d),
        h = d.getHours(),
        m = d.getMinutes(),
        s = d.getSeconds(),
        msec10 = d.getUTCMilliseconds() * 10 + msecTenths;

    return includeTime(dateStr, h, m, s, msec10);
};

function includeTime(dateStr, h, m, s, msec10) {
    // include each part that has nonzero data in or after it
    if(h || m || s || msec10) {
        dateStr += ' ' + lpad(h, 2) + ':' + lpad(m, 2);
        if(s || msec10) {
            dateStr += ':' + lpad(s, 2);
            if(msec10) {
                var digits = 4;
                while(msec10 % 10 === 0) {
                    digits -= 1;
                    msec10 /= 10;
                }
                dateStr += '.' + lpad(msec10, digits);
            }
        }
    }
    return dateStr;
}

// normalize date format to date string, in case it starts as
// a Date object or milliseconds
// optional dflt is the return value if cleaning fails
exports.cleanDate = function(v, dflt, calendar) {
    if(exports.isJSDate(v) || typeof v === 'number') {
        // do not allow milliseconds (old) or jsdate objects (inherently
        // described as gregorian dates) with world calendars
        if(isWorldCalendar(calendar)) {
            logError('JS Dates and milliseconds are incompatible with world calendars', v);
            return dflt;
        }

        // NOTE: if someone puts in a year as a number rather than a string,
        // this will mistakenly convert it thinking it's milliseconds from 1970
        // that is: '2012' -> Jan. 1, 2012, but 2012 -> 2012 epoch milliseconds
        v = exports.ms2DateTimeLocal(+v);
        if(!v && dflt !== undefined) return dflt;
    }
    else if(!exports.isDateTime(v, calendar)) {
        logError('unrecognized date', v);
        return dflt;
    }
    return v;
};

/*
 *  Date formatting for ticks and hovertext
 */

/*
 * modDateFormat: Support world calendars, and add one item to
 * d3's vocabulary:
 * %{n}f where n is the max number of digits of fractional seconds
 */
var fracMatch = /%\d?f/g;
function modDateFormat(fmt, x, calendar) {

    fmt = fmt.replace(fracMatch, function(match) {
        var digits = Math.min(+(match.charAt(1)) || 6, 6),
            fracSecs = ((x / 1000 % 1) + 2)
                .toFixed(digits)
                .substr(2).replace(/0+$/, '') || '0';
        return fracSecs;
    });

    var d = new Date(Math.floor(x + 0.05));

    if(isWorldCalendar(calendar)) {
        try {
            fmt = Registry.getComponentMethod('calendars', 'worldCalFmt')(fmt, x, calendar);
        }
        catch(e) {
            return 'Invalid';
        }
    }
    return utcFormat(fmt)(d);
}

/*
 * formatTime: create a time string from:
 *   x: milliseconds
 *   tr: tickround ('M', 'S', or # digits)
 * only supports UTC times (where every day is 24 hours and 0 is at midnight)
 */
var MAXSECONDS = [59, 59.9, 59.99, 59.999, 59.9999];
function formatTime(x, tr) {
    var timePart = mod(x + 0.05, ONEDAY);

    var timeStr = lpad(Math.floor(timePart / ONEHOUR), 2) + ':' +
        lpad(mod(Math.floor(timePart / ONEMIN), 60), 2);

    if(tr !== 'M') {
        if(!isNumeric(tr)) tr = 0; // should only be 'S'

        /*
         * this is a weird one - and shouldn't come up unless people
         * monkey with tick0 in weird ways, but we need to do something!
         * IN PARTICULAR we had better not display garbage (see below)
         * for numbers we always round to the nearest increment of the
         * precision we're showing, and this seems like the right way to
         * handle seconds and milliseconds, as they have a decimal point
         * and people will interpret that to mean rounding like numbers.
         * but for larger increments we floor the value: it's always
         * 2013 until the ball drops on the new year. We could argue about
         * which field it is where we start rounding (should 12:08:59
         * round to 12:09 if we're stopping at minutes?) but for now I'll
         * say we round seconds but floor everything else. BUT that means
         * we need to never round up to 60 seconds, ie 23:59:60
         */
        var sec = Math.min(mod(x / ONESEC, 60), MAXSECONDS[tr]);

        var secStr = (100 + sec).toFixed(tr).substr(1);
        if(tr > 0) {
            secStr = secStr.replace(/0+$/, '').replace(/[\.]$/, '');
        }

        timeStr += ':' + secStr;
    }
    return timeStr;
}

var yearFormat = utcFormat('%Y'),
    monthFormat = utcFormat('%b %Y'),
    dayFormat = utcFormat('%b %-d'),
    yearMonthDayFormat = utcFormat('%b %-d, %Y');

function yearFormatWorld(cDate) { return cDate.formatDate('yyyy'); }
function monthFormatWorld(cDate) { return cDate.formatDate('M yyyy'); }
function dayFormatWorld(cDate) { return cDate.formatDate('M d'); }
function yearMonthDayFormatWorld(cDate) { return cDate.formatDate('M d, yyyy'); }

/*
 * formatDate: turn a date into tick or hover label text.
 *
 *   x: milliseconds, the value to convert
 *   fmt: optional, an explicit format string (d3 format, even for world calendars)
 *   tr: tickround ('y', 'm', 'd', 'M', 'S', or # digits)
 *      used if no explicit fmt is provided
 *   calendar: optional string, the world calendar system to use
 *
 * returns the date/time as a string, potentially with the leading portion
 * on a separate line (after '\n')
 * Note that this means if you provide an explicit format which includes '\n'
 * the axis may choose to strip things after it when they don't change from
 * one tick to the next (as it does with automatic formatting)
 */
exports.formatDate = function(x, fmt, tr, calendar) {
    var headStr,
        dateStr;

    calendar = isWorldCalendar(calendar) && calendar;

    if(fmt) return modDateFormat(fmt, x, calendar);

    if(calendar) {
        try {
            var dateJD = Math.floor((x + 0.05) / ONEDAY) + EPOCHJD,
                cDate = Registry.getComponentMethod('calendars', 'getCal')(calendar)
                    .fromJD(dateJD);

            if(tr === 'y') dateStr = yearFormatWorld(cDate);
            else if(tr === 'm') dateStr = monthFormatWorld(cDate);
            else if(tr === 'd') {
                headStr = yearFormatWorld(cDate);
                dateStr = dayFormatWorld(cDate);
            }
            else {
                headStr = yearMonthDayFormatWorld(cDate);
                dateStr = formatTime(x, tr);
            }
        }
        catch(e) { return 'Invalid'; }
    }
    else {
        var d = new Date(Math.floor(x + 0.05));

        if(tr === 'y') dateStr = yearFormat(d);
        else if(tr === 'm') dateStr = monthFormat(d);
        else if(tr === 'd') {
            headStr = yearFormat(d);
            dateStr = dayFormat(d);
        }
        else {
            headStr = yearMonthDayFormat(d);
            dateStr = formatTime(x, tr);
        }
    }

    return dateStr + (headStr ? '\n' + headStr : '');
};

/*
 * incrementMonth: make a new milliseconds value from the given one,
 * having changed the month
 *
 * special case for world calendars: multiples of 12 are treated as years,
 * even for calendar systems that don't have (always or ever) 12 months/year
 * TODO: perhaps we need a different code for year increments to support this?
 *
 * ms (number): the initial millisecond value
 * dMonth (int): the (signed) number of months to shift
 * calendar (string): the calendar system to use
 *
 * changing month does not (and CANNOT) always preserve day, since
 * months have different lengths. The worst example of this is:
 *   d = new Date(1970,0,31); d.setMonth(1) -> Feb 31 turns into Mar 3
 *
 * But we want to be able to iterate over the last day of each month,
 * regardless of what its number is.
 * So shift 3 days forward, THEN set the new month, then unshift:
 *   1/31 -> 2/28 (or 29) -> 3/31 -> 4/30 -> ...
 *
 * Note that odd behavior still exists if you start from the 26th-28th:
 *   1/28 -> 2/28 -> 3/31
 * but at least you can't shift any dates into the wrong month,
 * and ticks on these days incrementing by month would be very unusual
 */
var THREEDAYS = 3 * ONEDAY;
exports.incrementMonth = function(ms, dMonth, calendar) {
    calendar = isWorldCalendar(calendar) && calendar;

    // pull time out and operate on pure dates, then add time back at the end
    // this gives maximum precision - not that we *normally* care if we're
    // incrementing by month, but better to be safe!
    var timeMs = mod(ms, ONEDAY);
    ms = Math.round(ms - timeMs);

    if(calendar) {
        try {
            var dateJD = Math.round(ms / ONEDAY) + EPOCHJD,
                calInstance = Registry.getComponentMethod('calendars', 'getCal')(calendar),
                cDate = calInstance.fromJD(dateJD);

            if(dMonth % 12) calInstance.add(cDate, dMonth, 'm');
            else calInstance.add(cDate, dMonth / 12, 'y');

            return (cDate.toJD() - EPOCHJD) * ONEDAY + timeMs;
        }
        catch(e) {
            logError('invalid ms ' + ms + ' in calendar ' + calendar);
            // then keep going in gregorian even though the result will be 'Invalid'
        }
    }

    var y = new Date(ms + THREEDAYS);
    return y.setUTCMonth(y.getUTCMonth() + dMonth) + timeMs - THREEDAYS;
};

/*
 * findExactDates: what fraction of data is exact days, months, or years?
 *
 * data: array of millisecond values
 * calendar (string) the calendar to test against
 */
exports.findExactDates = function(data, calendar) {
    var exactYears = 0,
        exactMonths = 0,
        exactDays = 0,
        blankCount = 0,
        d,
        di;

    var calInstance = (
        isWorldCalendar(calendar) &&
        Registry.getComponentMethod('calendars', 'getCal')(calendar)
    );

    for(var i = 0; i < data.length; i++) {
        di = data[i];

        // not date data at all
        if(!isNumeric(di)) {
            blankCount ++;
            continue;
        }

        // not an exact date
        if(di % ONEDAY) continue;

        if(calInstance) {
            try {
                d = calInstance.fromJD(di / ONEDAY + EPOCHJD);
                if(d.day() === 1) {
                    if(d.month() === 1) exactYears++;
                    else exactMonths++;
                }
                else exactDays++;
            }
            catch(e) {
                // invalid date in this calendar - ignore it here.
            }
        }
        else {
            d = new Date(di);
            if(d.getUTCDate() === 1) {
                if(d.getUTCMonth() === 0) exactYears++;
                else exactMonths++;
            }
            else exactDays++;
        }
    }
    exactMonths += exactYears;
    exactDays += exactMonths;

    var dataCount = data.length - blankCount;

    return {
        exactYears: exactYears / dataCount,
        exactMonths: exactMonths / dataCount,
        exactDays: exactDays / dataCount
    };
};

},{"../constants/numerical":334,"../registry":436,"./loggers":357,"./mod":359,"d3":62,"fast-isnumeric":68}],342:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/*
 * Ensures an array has the right amount of storage space. If it doesn't
 * exist, it creates an array. If it does exist, it returns it if too
 * short or truncates it in-place.
 *
 * The goal is to just reuse memory to avoid a bit of excessive garbage
 * collection.
 */
module.exports = function ensureArray(out, n) {
    if(!Array.isArray(out)) out = [];

    // If too long, truncate. (If too short, it will grow
    // automatically so we don't care about that case)
    out.length = n;

    return out;
};

},{}],343:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/* global jQuery:false */

var EventEmitter = require('events').EventEmitter;

var Events = {

    init: function(plotObj) {

        /*
         * If we have already instantiated an emitter for this plot
         * return early.
         */
        if(plotObj._ev instanceof EventEmitter) return plotObj;

        var ev = new EventEmitter();
        var internalEv = new EventEmitter();

        /*
         * Assign to plot._ev while we still live in a land
         * where plot is a DOM element with stuff attached to it.
         * In the future we can make plot the event emitter itself.
         */
        plotObj._ev = ev;

        /*
         * Create a second event handler that will manage events *internally*.
         * This allows parts of plotly to respond to thing like relayout without
         * having to use the user-facing event handler. They cannot peacefully
         * coexist on the same handler because a user invoking
         * plotObj.removeAllListeners() would detach internal events, breaking
         * plotly.
         */
        plotObj._internalEv = internalEv;

        /*
         * Assign bound methods from the ev to the plot object. These methods
         * will reference the 'this' of plot._ev even though they are methods
         * of plot. This will keep the event machinery away from the plot object
         * which currently is often a DOM element but presents an API that will
         * continue to function when plot becomes an emitter. Not all EventEmitter
         * methods have been bound to `plot` as some do not currently add value to
         * the Plotly event API.
         */
        plotObj.on = ev.on.bind(ev);
        plotObj.once = ev.once.bind(ev);
        plotObj.removeListener = ev.removeListener.bind(ev);
        plotObj.removeAllListeners = ev.removeAllListeners.bind(ev);

        /*
         * Create funtions for managing internal events. These are *only* triggered
         * by the mirroring of external events via the emit function.
         */
        plotObj._internalOn = internalEv.on.bind(internalEv);
        plotObj._internalOnce = internalEv.once.bind(internalEv);
        plotObj._removeInternalListener = internalEv.removeListener.bind(internalEv);
        plotObj._removeAllInternalListeners = internalEv.removeAllListeners.bind(internalEv);

        /*
         * We must wrap emit to continue to support JQuery events. The idea
         * is to check to see if the user is using JQuery events, if they are
         * we emit JQuery events to trigger user handlers as well as the EventEmitter
         * events.
         */
        plotObj.emit = function(event, data) {
            if(typeof jQuery !== 'undefined') {
                jQuery(plotObj).trigger(event, data);
            }

            ev.emit(event, data);
            internalEv.emit(event, data);
        };

        return plotObj;
    },

    /*
     * This function behaves like jQueries triggerHandler. It calls
     * all handlers for a particular event and returns the return value
     * of the LAST handler. This function also triggers jQuery's
     * triggerHandler for backwards compatibility.
     *
     * Note: triggerHandler has been recommended for deprecation in v2.0.0,
     * so the additional behavior of triggerHandler triggering internal events
     * is deliberate excluded in order to avoid reinforcing more usage.
     */
    triggerHandler: function(plotObj, event, data) {
        var jQueryHandlerValue;
        var nodeEventHandlerValue;
        /*
         * If Jquery exists run all its handlers for this event and
         * collect the return value of the LAST handler function
         */
        if(typeof jQuery !== 'undefined') {
            jQueryHandlerValue = jQuery(plotObj).triggerHandler(event, data);
        }

        /*
         * Now run all the node style event handlers
         */
        var ev = plotObj._ev;
        if(!ev) return jQueryHandlerValue;

        var handlers = ev._events[event];
        if(!handlers) return jQueryHandlerValue;

        /*
         * handlers can be function or an array of functions
         */
        if(typeof handlers === 'function') handlers = [handlers];
        var lastHandler = handlers.pop();

        /*
         * Call all the handlers except the last one.
         */
        for(var i = 0; i < handlers.length; i++) {
            handlers[i](data);
        }

        /*
         * Now call the final handler and collect its value
         */
        nodeEventHandlerValue = lastHandler(data);

        /*
         * Return either the jquery handler value if it exists or the
         * nodeEventHandler value. Jquery event value superceeds nodejs
         * events for backwards compatability reasons.
         */
        return jQueryHandlerValue !== undefined ? jQueryHandlerValue :
            nodeEventHandlerValue;
    },

    purge: function(plotObj) {
        delete plotObj._ev;
        delete plotObj.on;
        delete plotObj.once;
        delete plotObj.removeListener;
        delete plotObj.removeAllListeners;
        delete plotObj.emit;

        delete plotObj._ev;
        delete plotObj._internalEv;
        delete plotObj._internalOn;
        delete plotObj._internalOnce;
        delete plotObj._removeInternalListener;
        delete plotObj._removeAllInternalListeners;

        return plotObj;
    }

};

module.exports = Events;

},{"events":67}],344:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isPlainObject = require('./is_plain_object.js');
var isArray = Array.isArray;

function primitivesLoopSplice(source, target) {
    var i, value;
    for(i = 0; i < source.length; i++) {
        value = source[i];
        if(value !== null && typeof(value) === 'object') {
            return false;
        }
        if(value !== void(0)) {
            target[i] = value;
        }
    }
    return true;
}

exports.extendFlat = function() {
    return _extend(arguments, false, false, false);
};

exports.extendDeep = function() {
    return _extend(arguments, true, false, false);
};

exports.extendDeepAll = function() {
    return _extend(arguments, true, true, false);
};

exports.extendDeepNoArrays = function() {
    return _extend(arguments, true, false, true);
};

/*
 * Inspired by https://github.com/justmoon/node-extend/blob/master/index.js
 * All credit to the jQuery authors for perfecting this amazing utility.
 *
 * API difference with jQuery version:
 * - No optional boolean (true -> deep extend) first argument,
 *   use `extendFlat` for first-level only extend and
 *   use `extendDeep` for a deep extend.
 *
 * Other differences with jQuery version:
 * - Uses a modern (and faster) isPlainObject routine.
 * - Expected to work with object {} and array [] arguments only.
 * - Does not check for circular structure.
 *   FYI: jQuery only does a check across one level.
 *   Warning: this might result in infinite loops.
 *
 */
function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
    var target = inputs[0],
        length = inputs.length;

    var input, key, src, copy, copyIsArray, clone, allPrimitives;

    if(length === 2 && isArray(target) && isArray(inputs[1]) && target.length === 0) {

        allPrimitives = primitivesLoopSplice(inputs[1], target);

        if(allPrimitives) {
            return target;
        } else {
            target.splice(0, target.length); // reset target and continue to next block
        }
    }

    for(var i = 1; i < length; i++) {
        input = inputs[i];

        for(key in input) {
            src = target[key];
            copy = input[key];

            // Stop early and just transfer the array if array copies are disallowed:
            if(noArrayCopies && isArray(copy)) {
                target[key] = copy;
            }

            // recurse if we're merging plain objects or arrays
            else if(isDeep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
                if(copyIsArray) {
                    copyIsArray = false;
                    clone = src && isArray(src) ? src : [];
                } else {
                    clone = src && isPlainObject(src) ? src : {};
                }

                // never move original objects, clone them
                target[key] = _extend([clone, copy], isDeep, keepAllKeys, noArrayCopies);
            }

            // don't bring in undefined values, except for extendDeepAll
            else if(typeof copy !== 'undefined' || keepAllKeys) {
                target[key] = copy;
            }
        }
    }

    return target;
}

},{"./is_plain_object.js":355}],345:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


/**
 * Return news array containing only the unique items
 * found in input array.
 *
 * IMPORTANT: Note that items are considered unique
 * if `String({})` is unique. For example;
 *
 *  Lib.filterUnique([ { a: 1 }, { b: 2 } ])
 *
 *  returns [{ a: 1 }]
 *
 * and
 *
 *  Lib.filterUnique([ '1', 1 ])
 *
 *  returns ['1']
 *
 *
 * @param {array} array base array
 * @return {array} new filtered array
 */
module.exports = function filterUnique(array) {
    var seen = {},
        out = [],
        j = 0;

    for(var i = 0; i < array.length; i++) {
        var item = array[i];

        if(seen[item] !== 1) {
            seen[item] = 1;
            out[j++] = item;
        }
    }

    return out;
};

},{}],346:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/** Filter out object items with visible !== true
 *  insider array container.
 *
 *  @param {array of objects} container
 *  @return {array of objects} of length <= container
 *
 */
module.exports = function filterVisible(container) {
    var out = [];

    for(var i = 0; i < container.length; i++) {
        var item = container[i];

        if(item.visible === true) out.push(item);
    }

    return out;
};

},{}],347:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var mod = require('./mod');

/*
 * look for intersection of two line segments
 *   (1->2 and 3->4) - returns array [x,y] if they do, null if not
 */
exports.segmentsIntersect = segmentsIntersect;
function segmentsIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
    var a = x2 - x1,
        b = x3 - x1,
        c = x4 - x3,
        d = y2 - y1,
        e = y3 - y1,
        f = y4 - y3,
        det = a * f - c * d;
    // parallel lines? intersection is undefined
    // ignore the case where they are colinear
    if(det === 0) return null;
    var t = (b * f - c * e) / det,
        u = (b * d - a * e) / det;
    // segments do not intersect?
    if(u < 0 || u > 1 || t < 0 || t > 1) return null;

    return {x: x1 + a * t, y: y1 + d * t};
}

/*
 * find the minimum distance between two line segments (1->2 and 3->4)
 */
exports.segmentDistance = function segmentDistance(x1, y1, x2, y2, x3, y3, x4, y4) {
    if(segmentsIntersect(x1, y1, x2, y2, x3, y3, x4, y4)) return 0;

    // the two segments and their lengths squared
    var x12 = x2 - x1;
    var y12 = y2 - y1;
    var x34 = x4 - x3;
    var y34 = y4 - y3;
    var l2_12 = x12 * x12 + y12 * y12;
    var l2_34 = x34 * x34 + y34 * y34;

    // calculate distance squared, then take the sqrt at the very end
    var dist2 = Math.min(
        perpDistance2(x12, y12, l2_12, x3 - x1, y3 - y1),
        perpDistance2(x12, y12, l2_12, x4 - x1, y4 - y1),
        perpDistance2(x34, y34, l2_34, x1 - x3, y1 - y3),
        perpDistance2(x34, y34, l2_34, x2 - x3, y2 - y3)
    );

    return Math.sqrt(dist2);
};

/*
 * distance squared from segment ab to point c
 * [xab, yab] is the vector b-a
 * [xac, yac] is the vector c-a
 * l2_ab is the length squared of (b-a), just to simplify calculation
 */
function perpDistance2(xab, yab, l2_ab, xac, yac) {
    var fc_ab = (xac * xab + yac * yab);
    if(fc_ab < 0) {
        // point c is closer to point a
        return xac * xac + yac * yac;
    }
    else if(fc_ab > l2_ab) {
        // point c is closer to point b
        var xbc = xac - xab;
        var ybc = yac - yab;
        return xbc * xbc + ybc * ybc;
    }
    else {
        // perpendicular distance is the shortest
        var crossProduct = xac * yab - yac * xab;
        return crossProduct * crossProduct / l2_ab;
    }
}

// a very short-term cache for getTextLocation, just because
// we're often looping over the same locations multiple times
// invalidated as soon as we look at a different path
var locationCache, workingPath, workingTextWidth;

// turn a path and position along it into x, y, and angle for the given text
exports.getTextLocation = function getTextLocation(path, totalPathLen, positionOnPath, textWidth) {
    if(path !== workingPath || textWidth !== workingTextWidth) {
        locationCache = {};
        workingPath = path;
        workingTextWidth = textWidth;
    }
    if(locationCache[positionOnPath]) {
        return locationCache[positionOnPath];
    }

    // for the angle, use points on the path separated by the text width
    // even though due to curvature, the text will cover a bit more than that
    var p0 = path.getPointAtLength(mod(positionOnPath - textWidth / 2, totalPathLen));
    var p1 = path.getPointAtLength(mod(positionOnPath + textWidth / 2, totalPathLen));
    // note: atan handles 1/0 nicely
    var theta = Math.atan((p1.y - p0.y) / (p1.x - p0.x));
    // center the text at 2/3 of the center position plus 1/3 the p0/p1 midpoint
    // that's the average position of this segment, assuming it's roughly quadratic
    var pCenter = path.getPointAtLength(mod(positionOnPath, totalPathLen));
    var x = (pCenter.x * 4 + p0.x + p1.x) / 6;
    var y = (pCenter.y * 4 + p0.y + p1.y) / 6;

    var out = {x: x, y: y, theta: theta};
    locationCache[positionOnPath] = out;
    return out;
};

exports.clearLocationCache = function() {
    workingPath = null;
};

/*
 * Find the segment of `path` that's within the visible area
 * given by `bounds` {left, right, top, bottom}, to within a
 * precision of `buffer` px
 *
 * returns: undefined if nothing is visible, else object:
 * {
 *   min: position where the path first enters bounds, or 0 if it
 *        starts within bounds
 *   max: position where the path last exits bounds, or the path length
 *        if it finishes within bounds
 *   len: max - min, ie the length of visible path
 *   total: the total path length - just included so the caller doesn't
 *        need to call path.getTotalLength() again
 *   isClosed: true iff the start and end points of the path are both visible
 *        and are at the same point
 * }
 *
 * Works by starting from either end and repeatedly finding the distance from
 * that point to the plot area, and if it's outside the plot, moving along the
 * path by that distance (because the plot must be at least that far away on
 * the path). Note that if a path enters, exits, and re-enters the plot, we
 * will not capture this behavior.
 */
exports.getVisibleSegment = function getVisibleSegment(path, bounds, buffer) {
    var left = bounds.left;
    var right = bounds.right;
    var top = bounds.top;
    var bottom = bounds.bottom;

    var pMin = 0;
    var pTotal = path.getTotalLength();
    var pMax = pTotal;

    var pt0, ptTotal;

    function getDistToPlot(len) {
        var pt = path.getPointAtLength(len);

        // hold on to the start and end points for `closed`
        if(len === 0) pt0 = pt;
        else if(len === pTotal) ptTotal = pt;

        var dx = (pt.x < left) ? left - pt.x : (pt.x > right ? pt.x - right : 0);
        var dy = (pt.y < top) ? top - pt.y : (pt.y > bottom ? pt.y - bottom : 0);
        return Math.sqrt(dx * dx + dy * dy);
    }

    var distToPlot = getDistToPlot(pMin);
    while(distToPlot) {
        pMin += distToPlot + buffer;
        if(pMin > pMax) return;
        distToPlot = getDistToPlot(pMin);
    }

    distToPlot = getDistToPlot(pMax);
    while(distToPlot) {
        pMax -= distToPlot + buffer;
        if(pMin > pMax) return;
        distToPlot = getDistToPlot(pMax);
    }

    return {
        min: pMin,
        max: pMax,
        len: pMax - pMin,
        total: pTotal,
        isClosed: pMin === 0 && pMax === pTotal &&
            Math.abs(pt0.x - ptTotal.x) < 0.1 &&
            Math.abs(pt0.y - ptTotal.y) < 0.1
    };
};

},{"./mod":359}],348:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * Allow referencing a graph DOM element either directly
 * or by its id string
 *
 * @param {HTMLDivElement|string} gd: a graph element or its id
 *
 * @returns {HTMLDivElement} the DOM element of the graph
 */
module.exports = function(gd) {
    var gdElement;

    if(typeof gd === 'string') {
        gdElement = document.getElementById(gd);

        if(gdElement === null) {
            throw new Error('No DOM element with id \'' + gd + '\' exists on the page.');
        }

        return gdElement;
    }
    else if(gd === null || gd === undefined) {
        throw new Error('DOM element provided is null or undefined');
    }

    return gd;  // otherwise assume that gd is a DOM element
};

},{}],349:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var rgba = require('color-rgba');

var Colorscale = require('../components/colorscale');
var colorDflt = require('../components/color/attributes').defaultLine;

var colorDfltRgba = rgba(colorDflt);
var opacityDflt = 1;

function calculateColor(colorIn, opacityIn) {
    var colorOut = colorIn;
    colorOut[3] *= opacityIn;
    return colorOut;
}

function validateColor(colorIn) {
    if(isNumeric(colorIn)) return colorDfltRgba;

    var colorOut = rgba(colorIn);

    return colorOut.length ? colorOut : colorDfltRgba;
}

function validateOpacity(opacityIn) {
    return isNumeric(opacityIn) ? opacityIn : opacityDflt;
}

function formatColor(containerIn, opacityIn, len) {
    var colorIn = containerIn.color,
        isArrayColorIn = Array.isArray(colorIn),
        isArrayOpacityIn = Array.isArray(opacityIn),
        colorOut = [];

    var sclFunc, getColor, getOpacity, colori, opacityi;

    if(containerIn.colorscale !== undefined) {
        sclFunc = Colorscale.makeColorScaleFunc(
            Colorscale.extractScale(
                containerIn.colorscale,
                containerIn.cmin,
                containerIn.cmax
            )
        );
    }
    else {
        sclFunc = validateColor;
    }

    if(isArrayColorIn) {
        getColor = function(c, i) {
            return c[i] === undefined ? colorDfltRgba : rgba(sclFunc(c[i]));
        };
    }
    else getColor = validateColor;

    if(isArrayOpacityIn) {
        getOpacity = function(o, i) {
            return o[i] === undefined ? opacityDflt : validateOpacity(o[i]);
        };
    }
    else getOpacity = validateOpacity;

    if(isArrayColorIn || isArrayOpacityIn) {
        for(var i = 0; i < len; i++) {
            colori = getColor(colorIn, i);
            opacityi = getOpacity(opacityIn, i);
            colorOut[i] = calculateColor(colori, opacityi);
        }
    }
    else colorOut = calculateColor(rgba(colorIn), opacityIn);

    return colorOut;
}

module.exports = formatColor;

},{"../components/color/attributes":232,"../components/colorscale":247,"color-rgba":54,"fast-isnumeric":68}],350:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var identity = require('./identity');

function wrap(d) {return [d];}

module.exports = {

    // The D3 data binding concept and the General Update Pattern promotes the idea of
    // traversing into the scenegraph by using the `.data(fun, keyFun)` call.
    // The `fun` is most often a `repeat`, ie. the elements beneath a `<g>` element need
    // access to the same data, or a `descend`, which fans a scenegraph node into a bunch of
    // of elements, e.g. points, lines, rows, requiring an array as input.
    // The role of the `keyFun` is to identify what elements are being entered/exited/updated,
    // otherwise D3 reverts to using a plain index which would screw up `transition`s.
    keyFun: function(d) {return d.key;},
    repeat: wrap,
    descend: identity,

    // Plotly.js uses a convention of storing the actual contents of the `calcData` as the
    // element zero of a container array. These helpers are just used for clarity as a
    // newcomer to the codebase may not know what the `[0]` is, and whether there can be further
    // elements (not atm).
    wrap: wrap,
    unwrap: function(d) {return d[0];}
};

},{"./identity":352}],351:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var toSuperScript = require('superscript-text');
var stringMappings = require('../constants/string_mappings');

function fixSuperScript(x) {
    var idx = 0;

    while((idx = x.indexOf('<sup>', idx)) >= 0) {
        var nidx = x.indexOf('</sup>', idx);
        if(nidx < idx) break;

        x = x.slice(0, idx) + toSuperScript(x.slice(idx + 5, nidx)) + x.slice(nidx + 6);
    }

    return x;
}

function fixBR(x) {
    return x.replace(/\<br\>/g, '\n');
}

function stripTags(x) {
    return x.replace(/\<.*\>/g, '');
}

function fixEntities(x) {
    var entityToUnicode = stringMappings.entityToUnicode;
    var idx = 0;

    while((idx = x.indexOf('&', idx)) >= 0) {
        var nidx = x.indexOf(';', idx);
        if(nidx < idx) {
            idx += 1;
            continue;
        }

        var entity = entityToUnicode[x.slice(idx + 1, nidx)];
        if(entity) {
            x = x.slice(0, idx) + entity + x.slice(nidx + 1);
        } else {
            x = x.slice(0, idx) + x.slice(nidx + 1);
        }
    }

    return x;
}

function convertHTMLToUnicode(html) {
    return '' +
        fixEntities(
        stripTags(
        fixSuperScript(
        fixBR(
          html))));
}

module.exports = convertHTMLToUnicode;

},{"../constants/string_mappings":335,"superscript-text":196}],352:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// Simple helper functions
// none of these need any external deps

module.exports = function identity(d) { return d; };

},{}],353:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var numConstants = require('../constants/numerical');
var FP_SAFE = numConstants.FP_SAFE;
var BADNUM = numConstants.BADNUM;

var lib = module.exports = {};

lib.nestedProperty = require('./nested_property');
lib.keyedContainer = require('./keyed_container');
lib.relativeAttr = require('./relative_attr');
lib.isPlainObject = require('./is_plain_object');
lib.isArray = require('./is_array');
lib.mod = require('./mod');
lib.toLogRange = require('./to_log_range');
lib.relinkPrivateKeys = require('./relink_private');
lib.ensureArray = require('./ensure_array');

var coerceModule = require('./coerce');
lib.valObjectMeta = coerceModule.valObjectMeta;
lib.coerce = coerceModule.coerce;
lib.coerce2 = coerceModule.coerce2;
lib.coerceFont = coerceModule.coerceFont;
lib.coerceHoverinfo = coerceModule.coerceHoverinfo;
lib.validate = coerceModule.validate;

var datesModule = require('./dates');
lib.dateTime2ms = datesModule.dateTime2ms;
lib.isDateTime = datesModule.isDateTime;
lib.ms2DateTime = datesModule.ms2DateTime;
lib.ms2DateTimeLocal = datesModule.ms2DateTimeLocal;
lib.cleanDate = datesModule.cleanDate;
lib.isJSDate = datesModule.isJSDate;
lib.formatDate = datesModule.formatDate;
lib.incrementMonth = datesModule.incrementMonth;
lib.dateTick0 = datesModule.dateTick0;
lib.dfltRange = datesModule.dfltRange;
lib.findExactDates = datesModule.findExactDates;
lib.MIN_MS = datesModule.MIN_MS;
lib.MAX_MS = datesModule.MAX_MS;

var searchModule = require('./search');
lib.findBin = searchModule.findBin;
lib.sorterAsc = searchModule.sorterAsc;
lib.sorterDes = searchModule.sorterDes;
lib.distinctVals = searchModule.distinctVals;
lib.roundUp = searchModule.roundUp;

var statsModule = require('./stats');
lib.aggNums = statsModule.aggNums;
lib.len = statsModule.len;
lib.mean = statsModule.mean;
lib.variance = statsModule.variance;
lib.stdev = statsModule.stdev;
lib.interp = statsModule.interp;

var matrixModule = require('./matrix');
lib.init2dArray = matrixModule.init2dArray;
lib.transposeRagged = matrixModule.transposeRagged;
lib.dot = matrixModule.dot;
lib.translationMatrix = matrixModule.translationMatrix;
lib.rotationMatrix = matrixModule.rotationMatrix;
lib.rotationXYMatrix = matrixModule.rotationXYMatrix;
lib.apply2DTransform = matrixModule.apply2DTransform;
lib.apply2DTransform2 = matrixModule.apply2DTransform2;

var geom2dModule = require('./geometry2d');
lib.segmentsIntersect = geom2dModule.segmentsIntersect;
lib.segmentDistance = geom2dModule.segmentDistance;
lib.getTextLocation = geom2dModule.getTextLocation;
lib.clearLocationCache = geom2dModule.clearLocationCache;
lib.getVisibleSegment = geom2dModule.getVisibleSegment;

var extendModule = require('./extend');
lib.extendFlat = extendModule.extendFlat;
lib.extendDeep = extendModule.extendDeep;
lib.extendDeepAll = extendModule.extendDeepAll;
lib.extendDeepNoArrays = extendModule.extendDeepNoArrays;

var loggersModule = require('./loggers');
lib.log = loggersModule.log;
lib.warn = loggersModule.warn;
lib.error = loggersModule.error;

var regexModule = require('./regex');
lib.counterRegex = regexModule.counter;

var throttleModule = require('./throttle');
lib.throttle = throttleModule.throttle;
lib.throttleDone = throttleModule.done;
lib.clearThrottle = throttleModule.clear;

lib.getGraphDiv = require('./get_graph_div');

lib.notifier = require('./notifier');

lib.filterUnique = require('./filter_unique');
lib.filterVisible = require('./filter_visible');
lib.pushUnique = require('./push_unique');

lib.cleanNumber = require('./clean_number');

lib.ensureNumber = function num(v) {
    if(!isNumeric(v)) return BADNUM;
    v = Number(v);
    if(v < -FP_SAFE || v > FP_SAFE) return BADNUM;
    return isNumeric(v) ? Number(v) : BADNUM;
};

lib.noop = require('./noop');
lib.identity = require('./identity');

/**
 * swap x and y of the same attribute in container cont
 * specify attr with a ? in place of x/y
 * you can also swap other things than x/y by providing part1 and part2
 */
lib.swapAttrs = function(cont, attrList, part1, part2) {
    if(!part1) part1 = 'x';
    if(!part2) part2 = 'y';
    for(var i = 0; i < attrList.length; i++) {
        var attr = attrList[i],
            xp = lib.nestedProperty(cont, attr.replace('?', part1)),
            yp = lib.nestedProperty(cont, attr.replace('?', part2)),
            temp = xp.get();
        xp.set(yp.get());
        yp.set(temp);
    }
};

/**
 * to prevent event bubbling, in particular text selection during drag.
 * see http://stackoverflow.com/questions/5429827/
 *      how-can-i-prevent-text-element-selection-with-cursor-drag
 * for maximum effect use:
 *      return pauseEvent(e);
 */
lib.pauseEvent = function(e) {
    if(e.stopPropagation) e.stopPropagation();
    if(e.preventDefault) e.preventDefault();
    e.cancelBubble = true;
    return false;
};

/**
 * SVG painter's algo worked around with reinsertion
 */
lib.raiseToTop = function raiseToTop(elem) {
    elem.parentNode.appendChild(elem);
};

/**
 * cancel a possibly pending transition; returned selection may be used by caller
 */
lib.cancelTransition = function(selection) {
    return selection.transition().duration(0);
};

// constrain - restrict a number v to be between v0 and v1
lib.constrain = function(v, v0, v1) {
    if(v0 > v1) return Math.max(v1, Math.min(v0, v));
    return Math.max(v0, Math.min(v1, v));
};

/**
 * do two bounding boxes from getBoundingClientRect,
 * ie {left,right,top,bottom,width,height}, overlap?
 * takes optional padding pixels
 */
lib.bBoxIntersect = function(a, b, pad) {
    pad = pad || 0;
    return (a.left <= b.right + pad &&
            b.left <= a.right + pad &&
            a.top <= b.bottom + pad &&
            b.top <= a.bottom + pad);
};

/*
 * simpleMap: alternative to Array.map that only
 * passes on the element and up to 2 extra args you
 * provide (but not the array index or the whole array)
 *
 * array: the array to map it to
 * func: the function to apply
 * x1, x2: optional extra args
 */
lib.simpleMap = function(array, func, x1, x2) {
    var len = array.length,
        out = new Array(len);
    for(var i = 0; i < len; i++) out[i] = func(array[i], x1, x2);
    return out;
};

// random string generator
lib.randstr = function randstr(existing, bits, base) {
    /*
     * Include number of bits, the base of the string you want
     * and an optional array of existing strings to avoid.
     */
    if(!base) base = 16;
    if(bits === undefined) bits = 24;
    if(bits <= 0) return '0';

    var digits = Math.log(Math.pow(2, bits)) / Math.log(base),
        res = '',
        i,
        b,
        x;

    for(i = 2; digits === Infinity; i *= 2) {
        digits = Math.log(Math.pow(2, bits / i)) / Math.log(base) * i;
    }

    var rem = digits - Math.floor(digits);

    for(i = 0; i < Math.floor(digits); i++) {
        x = Math.floor(Math.random() * base).toString(base);
        res = x + res;
    }

    if(rem) {
        b = Math.pow(base, rem);
        x = Math.floor(Math.random() * b).toString(base);
        res = x + res;
    }

    var parsed = parseInt(res, base);
    if((existing && (existing.indexOf(res) > -1)) ||
         (parsed !== Infinity && parsed >= Math.pow(2, bits))) {
        return randstr(existing, bits, base);
    }
    else return res;
};

lib.OptionControl = function(opt, optname) {
    /*
     * An environment to contain all option setters and
     * getters that collectively modify opts.
     *
     * You can call up opts from any function in new object
     * as this.optname || this.opt
     *
     * See FitOpts for example of usage
     */
    if(!opt) opt = {};
    if(!optname) optname = 'opt';

    var self = {};
    self.optionList = [];

    self._newoption = function(optObj) {
        optObj[optname] = opt;
        self[optObj.name] = optObj;
        self.optionList.push(optObj);
    };

    self['_' + optname] = opt;
    return self;
};

/**
 * lib.smooth: smooth arrayIn by convolving with
 * a hann window with given full width at half max
 * bounce the ends in, so the output has the same length as the input
 */
lib.smooth = function(arrayIn, FWHM) {
    FWHM = Math.round(FWHM) || 0; // only makes sense for integers
    if(FWHM < 2) return arrayIn;

    var alen = arrayIn.length,
        alen2 = 2 * alen,
        wlen = 2 * FWHM - 1,
        w = new Array(wlen),
        arrayOut = new Array(alen),
        i,
        j,
        k,
        v;

    // first make the window array
    for(i = 0; i < wlen; i++) {
        w[i] = (1 - Math.cos(Math.PI * (i + 1) / FWHM)) / (2 * FWHM);
    }

    // now do the convolution
    for(i = 0; i < alen; i++) {
        v = 0;
        for(j = 0; j < wlen; j++) {
            k = i + j + 1 - FWHM;

            // multibounce
            if(k < -alen) k -= alen2 * Math.round(k / alen2);
            else if(k >= alen2) k -= alen2 * Math.floor(k / alen2);

            // single bounce
            if(k < 0) k = - 1 - k;
            else if(k >= alen) k = alen2 - 1 - k;

            v += arrayIn[k] * w[j];
        }
        arrayOut[i] = v;
    }

    return arrayOut;
};

/**
 * syncOrAsync: run a sequence of functions synchronously
 * as long as its returns are not promises (ie have no .then)
 * includes one argument arg to send to all functions...
 * this is mainly just to prevent us having to make wrapper functions
 * when the only purpose of the wrapper is to reference gd
 * and a final step to be executed at the end
 * TODO: if there's an error and everything is sync,
 * this doesn't happen yet because we want to make sure
 * that it gets reported
 */
lib.syncOrAsync = function(sequence, arg, finalStep) {
    var ret, fni;

    function continueAsync() {
        return lib.syncOrAsync(sequence, arg, finalStep);
    }

    while(sequence.length) {
        fni = sequence.splice(0, 1)[0];
        ret = fni(arg);

        if(ret && ret.then) {
            return ret.then(continueAsync)
                .then(undefined, lib.promiseError);
        }
    }

    return finalStep && finalStep(arg);
};


/**
 * Helper to strip trailing slash, from
 * http://stackoverflow.com/questions/6680825/return-string-without-trailing-slash
 */
lib.stripTrailingSlash = function(str) {
    if(str.substr(-1) === '/') return str.substr(0, str.length - 1);
    return str;
};

lib.noneOrAll = function(containerIn, containerOut, attrList) {
    /**
     * some attributes come together, so if you have one of them
     * in the input, you should copy the default values of the others
     * to the input as well.
     */
    if(!containerIn) return;

    var hasAny = false,
        hasAll = true,
        i,
        val;

    for(i = 0; i < attrList.length; i++) {
        val = containerIn[attrList[i]];
        if(val !== undefined && val !== null) hasAny = true;
        else hasAll = false;
    }

    if(hasAny && !hasAll) {
        for(i = 0; i < attrList.length; i++) {
            containerIn[attrList[i]] = containerOut[attrList[i]];
        }
    }
};

/** merges calcdata field (given by cdAttr) with traceAttr values
 *
 * N.B. Loop over minimum of cd.length and traceAttr.length
 * i.e. it does not try to fill in beyond traceAttr.length-1
 *
 * @param {array} traceAttr : trace attribute
 * @param {object} cd : calcdata trace
 * @param {string} cdAttr : calcdata key
 */
lib.mergeArray = function(traceAttr, cd, cdAttr) {
    if(Array.isArray(traceAttr)) {
        var imax = Math.min(traceAttr.length, cd.length);
        for(var i = 0; i < imax; i++) cd[i][cdAttr] = traceAttr[i];
    }
};

/** fills calcdata field (given by cdAttr) with traceAttr values
 *  or function of traceAttr values (e.g. some fallback)
 *
 * N.B. Loops over all cd items.
 *
 * @param {array} traceAttr : trace attribute
 * @param {object} cd : calcdata trace
 * @param {string} cdAttr : calcdata key
 * @param {function} [fn] : optional function to apply to each array item
 */
lib.fillArray = function(traceAttr, cd, cdAttr, fn) {
    fn = fn || lib.identity;

    if(Array.isArray(traceAttr)) {
        for(var i = 0; i < cd.length; i++) {
            cd[i][cdAttr] = fn(traceAttr[i]);
        }
    }
};

/** Handler for trace-wide vs per-point options
 *
 * @param {object} trace : (full) trace object
 * @param {number} ptNumber : index of the point in question
 * @param {string} astr : attribute string
 * @param {function} [fn] : optional function to apply to each array item
 *
 * @return {any}
 */
lib.castOption = function(trace, ptNumber, astr, fn) {
    fn = fn || lib.identity;

    var val = lib.nestedProperty(trace, astr).get();

    if(Array.isArray(val)) {
        if(Array.isArray(ptNumber) && Array.isArray(val[ptNumber[0]])) {
            return fn(val[ptNumber[0]][ptNumber[1]]);
        } else {
            return fn(val[ptNumber]);
        }
    } else {
        return val;
    }
};

/** Extract option from calcdata item, correctly falling back to
 *  trace value if not found.
 *
 *  @param {object} calcPt : calcdata[i][j] item
 *  @param {object} trace : (full) trace object
 *  @param {string} calcKey : calcdata key
 *  @param {string} traceKey : aka trace attribute string
 *  @return {any}
 */
lib.extractOption = function(calcPt, trace, calcKey, traceKey) {
    if(calcKey in calcPt) return calcPt[calcKey];

    // fallback to trace value,
    //   must check if value isn't itself an array
    //   which means the trace attribute has a corresponding
    //   calcdata key, but its value is falsy
    var traceVal = lib.nestedProperty(trace, traceKey).get();
    if(!Array.isArray(traceVal)) return traceVal;
};

/** Returns target as set by 'target' transform attribute
 *
 * @param {object} trace : full trace object
 * @param {object} transformOpts : transform option object
 *  - target (string} :
 *      either an attribute string referencing an array in the trace object, or
 *      a set array.
 *
 * @return {array or false} : the target array (NOT a copy!!) or false if invalid
 */
lib.getTargetArray = function(trace, transformOpts) {
    var target = transformOpts.target;

    if(typeof target === 'string' && target) {
        var array = lib.nestedProperty(trace, target).get();
        return Array.isArray(array) ? array : false;
    } else if(Array.isArray(target)) {
        return target;
    }

    return false;
};

/**
 * modified version of jQuery's extend to strip out private objs and functions,
 * and cut arrays down to first <arraylen> or 1 elements
 * because extend-like algorithms are hella slow
 * obj2 is assumed to already be clean of these things (including no arrays)
 */
lib.minExtend = function(obj1, obj2) {
    var objOut = {};
    if(typeof obj2 !== 'object') obj2 = {};
    var arrayLen = 3,
        keys = Object.keys(obj1),
        i,
        k,
        v;
    for(i = 0; i < keys.length; i++) {
        k = keys[i];
        v = obj1[k];
        if(k.charAt(0) === '_' || typeof v === 'function') continue;
        else if(k === 'module') objOut[k] = v;
        else if(Array.isArray(v)) objOut[k] = v.slice(0, arrayLen);
        else if(v && (typeof v === 'object')) objOut[k] = lib.minExtend(obj1[k], obj2[k]);
        else objOut[k] = v;
    }

    keys = Object.keys(obj2);
    for(i = 0; i < keys.length; i++) {
        k = keys[i];
        v = obj2[k];
        if(typeof v !== 'object' || !(k in objOut) || typeof objOut[k] !== 'object') {
            objOut[k] = v;
        }
    }

    return objOut;
};

lib.titleCase = function(s) {
    return s.charAt(0).toUpperCase() + s.substr(1);
};

lib.containsAny = function(s, fragments) {
    for(var i = 0; i < fragments.length; i++) {
        if(s.indexOf(fragments[i]) !== -1) return true;
    }
    return false;
};

lib.isPlotDiv = function(el) {
    var el3 = d3.select(el);
    return el3.node() instanceof HTMLElement &&
        el3.size() &&
        el3.classed('js-plotly-plot');
};

lib.removeElement = function(el) {
    var elParent = el && el.parentNode;
    if(elParent) elParent.removeChild(el);
};

/**
 * for dynamically adding style rules
 * makes one stylesheet that contains all rules added
 * by all calls to this function
 */
lib.addStyleRule = function(selector, styleString) {
    if(!lib.styleSheet) {
        var style = document.createElement('style');
        // WebKit hack :(
        style.appendChild(document.createTextNode(''));
        document.head.appendChild(style);
        lib.styleSheet = style.sheet;
    }
    var styleSheet = lib.styleSheet;

    if(styleSheet.insertRule) {
        styleSheet.insertRule(selector + '{' + styleString + '}', 0);
    }
    else if(styleSheet.addRule) {
        styleSheet.addRule(selector, styleString, 0);
    }
    else lib.warn('addStyleRule failed');
};

lib.isIE = function() {
    return typeof window.navigator.msSaveBlob !== 'undefined';
};

/**
 * Duck typing to recognize a d3 selection, mostly for IE9's benefit
 * because it doesn't handle instanceof like modern browsers
 */
lib.isD3Selection = function(obj) {
    return obj && (typeof obj.classed === 'function');
};


/**
 * Converts a string path to an object.
 *
 * When given a string containing an array element, it will create a `null`
 * filled array of the given size.
 *
 * @example
 * lib.objectFromPath('nested.test[2].path', 'value');
 * // returns { nested: { test: [null, null, { path: 'value' }]}
 *
 * @param   {string}    path to nested value
 * @param   {*}         any value to be set
 *
 * @return {Object} the constructed object with a full nested path
 */
lib.objectFromPath = function(path, value) {
    var keys = path.split('.'),
        tmpObj,
        obj = tmpObj = {};

    for(var i = 0; i < keys.length; i++) {
        var key = keys[i];
        var el = null;

        var parts = keys[i].match(/(.*)\[([0-9]+)\]/);

        if(parts) {
            key = parts[1];
            el = parts[2];

            tmpObj = tmpObj[key] = [];

            if(i === keys.length - 1) {
                tmpObj[el] = value;
            } else {
                tmpObj[el] = {};
            }

            tmpObj = tmpObj[el];
        } else {

            if(i === keys.length - 1) {
                tmpObj[key] = value;
            } else {
                tmpObj[key] = {};
            }

            tmpObj = tmpObj[key];
        }
    }

    return obj;
};

/**
 * Iterate through an object in-place, converting dotted properties to objects.
 *
 * Examples:
 *
 *   lib.expandObjectPaths({'nested.test.path': 'value'});
 *     => { nested: { test: {path: 'value'}}}
 *
 * It also handles array notation, e.g.:
 *
 *   lib.expandObjectPaths({'foo[1].bar': 'value'});
 *     => { foo: [null, {bar: value}] }
 *
 * It handles merges the results when two properties are specified in parallel:
 *
 *   lib.expandObjectPaths({'foo[1].bar': 10, 'foo[0].bar': 20});
 *     => { foo: [{bar: 10}, {bar: 20}] }
 *
 * It does NOT, however, merge mulitple mutliply-nested arrays::
 *
 *   lib.expandObjectPaths({'marker[1].range[1]': 5, 'marker[1].range[0]': 4})
 *     => { marker: [null, {range: 4}] }
 */

// Store this to avoid recompiling regex on *every* prop since this may happen many
// many times for animations. Could maybe be inside the function. Not sure about
// scoping vs. recompilation tradeoff, but at least it's not just inlining it into
// the inner loop.
var dottedPropertyRegex = /^([^\[\.]+)\.(.+)?/;
var indexedPropertyRegex = /^([^\.]+)\[([0-9]+)\](\.)?(.+)?/;

lib.expandObjectPaths = function(data) {
    var match, key, prop, datum, idx, dest, trailingPath;
    if(typeof data === 'object' && !Array.isArray(data)) {
        for(key in data) {
            if(data.hasOwnProperty(key)) {
                if((match = key.match(dottedPropertyRegex))) {
                    datum = data[key];
                    prop = match[1];

                    delete data[key];

                    data[prop] = lib.extendDeepNoArrays(data[prop] || {}, lib.objectFromPath(key, lib.expandObjectPaths(datum))[prop]);
                } else if((match = key.match(indexedPropertyRegex))) {
                    datum = data[key];

                    prop = match[1];
                    idx = parseInt(match[2]);

                    delete data[key];

                    data[prop] = data[prop] || [];

                    if(match[3] === '.') {
                        // This is the case where theere are subsequent properties into which
                        // we must recurse, e.g. transforms[0].value
                        trailingPath = match[4];
                        dest = data[prop][idx] = data[prop][idx] || {};

                        // NB: Extend deep no arrays prevents this from working on multiple
                        // nested properties in the same object, e.g.
                        //
                        // {
                        //   foo[0].bar[1].range
                        //   foo[0].bar[0].range
                        // }
                        //
                        // In this case, the extendDeepNoArrays will overwrite one array with
                        // the other, so that both properties *will not* be present in the
                        // result. Fixing this would require a more intelligent tracking
                        // of changes and merging than extendDeepNoArrays currently accomplishes.
                        lib.extendDeepNoArrays(dest, lib.objectFromPath(trailingPath, lib.expandObjectPaths(datum)));
                    } else {
                        // This is the case where this property is the end of the line,
                        // e.g. xaxis.range[0]
                        data[prop][idx] = lib.expandObjectPaths(datum);
                    }
                } else {
                    data[key] = lib.expandObjectPaths(data[key]);
                }
            }
        }
    }

    return data;
};

/**
 * Converts value to string separated by the provided separators.
 *
 * @example
 * lib.numSeparate(2016, '.,');
 * // returns '2016'
 *
 * @example
 * lib.numSeparate(3000, '.,', true);
 * // returns '3,000'
 *
 * @example
 * lib.numSeparate(1234.56, '|,')
 * // returns '1,234|56'
 *
 * @param   {string|number} value       the value to be converted
 * @param   {string}    separators  string of decimal, then thousands separators
 * @param   {boolean}    separatethousands  boolean, 4-digit integers are separated if true
 *
 * @return  {string}    the value that has been separated
 */
lib.numSeparate = function(value, separators, separatethousands) {
    if(!separatethousands) separatethousands = false;

    if(typeof separators !== 'string' || separators.length === 0) {
        throw new Error('Separator string required for formatting!');
    }

    if(typeof value === 'number') {
        value = String(value);
    }

    var thousandsRe = /(\d+)(\d{3})/,
        decimalSep = separators.charAt(0),
        thouSep = separators.charAt(1);

    var x = value.split('.'),
        x1 = x[0],
        x2 = x.length > 1 ? decimalSep + x[1] : '';

    // Years are ignored for thousands separators
    if(thouSep && (x.length > 1 || x1.length > 4 || separatethousands)) {
        while(thousandsRe.test(x1)) {
            x1 = x1.replace(thousandsRe, '$1' + thouSep + '$2');
        }
    }

    return x1 + x2;
};

var TEMPLATE_STRING_REGEX = /%{([^\s%{}]*)}/g;
var SIMPLE_PROPERTY_REGEX = /^\w*$/;

/*
 * Substitute values from an object into a string
 *
 * Examples:
 *  Lib.templateString('name: %{trace}', {trace: 'asdf'}) --> 'name: asdf'
 *  Lib.templateString('name: %{trace[0].name}', {trace: [{name: 'asdf'}]}) --> 'name: asdf'
 *
 * @param {string}  input string containing %{...} template strings
 * @param {obj}     data object containing substitution values
 *
 * @return {string} templated string
 */

lib.templateString = function(string, obj) {
    // Not all that useful, but cache nestedProperty instantiation
    // just in case it speeds things up *slightly*:
    var getterCache = {};

    return string.replace(TEMPLATE_STRING_REGEX, function(dummy, key) {
        if(SIMPLE_PROPERTY_REGEX.test(key)) {
            return obj[key] || '';
        }
        getterCache[key] = getterCache[key] || lib.nestedProperty(obj, key).get;
        return getterCache[key]() || '';
    });
};

},{"../constants/numerical":334,"./clean_number":339,"./coerce":340,"./dates":341,"./ensure_array":342,"./extend":344,"./filter_unique":345,"./filter_visible":346,"./geometry2d":347,"./get_graph_div":348,"./identity":352,"./is_array":354,"./is_plain_object":355,"./keyed_container":356,"./loggers":357,"./matrix":358,"./mod":359,"./nested_property":360,"./noop":361,"./notifier":362,"./push_unique":365,"./regex":367,"./relative_attr":368,"./relink_private":369,"./search":370,"./stats":373,"./throttle":376,"./to_log_range":377,"d3":62,"fast-isnumeric":68}],354:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * Return true for arrays, whether they're untyped or not.
 */

// IE9 fallback
var ab = (typeof ArrayBuffer === 'undefined' || !ArrayBuffer.isView) ?
    {isView: function() { return false; }} :
    ArrayBuffer;

module.exports = function isArray(a) {
    return Array.isArray(a) || ab.isView(a);
};

},{}],355:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// more info: http://stackoverflow.com/questions/18531624/isplainobject-thing
module.exports = function isPlainObject(obj) {

    // We need to be a little less strict in the `imagetest` container because
    // of how async image requests are handled.
    //
    // N.B. isPlainObject(new Constructor()) will return true in `imagetest`
    if(window && window.process && window.process.versions) {
        return Object.prototype.toString.call(obj) === '[object Object]';
    }

    return (
        Object.prototype.toString.call(obj) === '[object Object]' &&
        Object.getPrototypeOf(obj) === Object.prototype
    );
};

},{}],356:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var nestedProperty = require('./nested_property');

var SIMPLE_PROPERTY_REGEX = /^\w*$/;

// bitmask for deciding what's updated. Sometimes the name needs to be updated,
// sometimes the value needs to be updated, and sometimes both do. This is just
// a simple way to track what's updated such that it's a simple OR operation to
// assimilate new updates.
//
// The only exception is the UNSET bit that tracks when we need to explicitly
// unset and remove the property. This concrn arises because of the special
// way in which nestedProperty handles null/undefined. When you specify `null`,
// it prunes any unused items in the tree. I ran into some issues with it getting
// null vs undefined confused, so UNSET is just a bit that forces the property
// update to send `null`, removing the property explicitly rather than setting
// it to undefined.
var NONE = 0;
var NAME = 1;
var VALUE = 2;
var BOTH = 3;
var UNSET = 4;

module.exports = function keyedContainer(baseObj, path, keyName, valueName) {
    keyName = keyName || 'name';
    valueName = valueName || 'value';
    var i, arr;
    var changeTypes = {};

    if(path && path.length) { arr = nestedProperty(baseObj, path).get();
    } else {
        arr = baseObj;
    }

    path = path || '';
    arr = arr || [];

    // Construct an index:
    var indexLookup = {};
    for(i = 0; i < arr.length; i++) {
        indexLookup[arr[i][keyName]] = i;
    }

    var isSimpleValueProp = SIMPLE_PROPERTY_REGEX.test(valueName);

    var obj = {
        // NB: this does not actually modify the baseObj
        set: function(name, value) {
            var changeType = value === null ? UNSET : NONE;

            var idx = indexLookup[name];
            if(idx === undefined) {
                changeType = changeType | BOTH;
                idx = arr.length;
                indexLookup[name] = idx;
            } else if(value !== (isSimpleValueProp ? arr[idx][valueName] : nestedProperty(arr[idx], valueName).get())) {
                changeType = changeType | VALUE;
            }

            var newValue = arr[idx] = arr[idx] || {};
            newValue[keyName] = name;

            if(isSimpleValueProp) {
                newValue[valueName] = value;
            } else {
                nestedProperty(newValue, valueName).set(value);
            }

            // If it's not an unset, force that bit to be unset. This is all related to the fact
            // that undefined and null are a bit specially implemented in nestedProperties.
            if(value !== null) {
                changeType = changeType & ~UNSET;
            }

            changeTypes[idx] = changeTypes[idx] | changeType;

            return obj;
        },
        get: function(name) {
            var idx = indexLookup[name];

            if(idx === undefined) {
                return undefined;
            } else if(isSimpleValueProp) {
                return arr[idx][valueName];
            } else {
                return nestedProperty(arr[idx], valueName).get();
            }
        },
        rename: function(name, newName) {
            var idx = indexLookup[name];

            if(idx === undefined) return obj;
            changeTypes[idx] = changeTypes[idx] | NAME;

            indexLookup[newName] = idx;
            delete indexLookup[name];

            arr[idx][keyName] = newName;

            return obj;
        },
        remove: function(name) {
            var idx = indexLookup[name];

            if(idx === undefined) return obj;

            var object = arr[idx];
            if(Object.keys(object).length > 2) {
                // This object contains more than just the key/value, so unset
                // the value without modifying the entry otherwise:
                changeTypes[idx] = changeTypes[idx] | VALUE;
                return obj.set(name, null);
            }

            if(isSimpleValueProp) {
                for(i = idx; i < arr.length; i++) {
                    changeTypes[i] = changeTypes[i] | BOTH;
                }
                for(i = idx; i < arr.length; i++) {
                    indexLookup[arr[i][keyName]]--;
                }
                arr.splice(idx, 1);
                delete(indexLookup[name]);
            } else {
                // Perform this update *strictly* so we can check whether the result's
                // been pruned. If so, it's a removal. If not, it's a value unset only.
                nestedProperty(object, valueName).set(null);

                // Now check if the top level nested property has any keys left. If so,
                // the object still has values so we only want to unset the key. If not,
                // the entire object can be removed since there's no other data.
                // var topLevelKeys = Object.keys(object[valueName.split('.')[0]] || []);

                changeTypes[idx] = changeTypes[idx] | VALUE | UNSET;
            }

            return obj;
        },
        constructUpdate: function() {
            var astr, idx;
            var update = {};
            var changed = Object.keys(changeTypes);
            for(var i = 0; i < changed.length; i++) {
                idx = changed[i];
                astr = path + '[' + idx + ']';
                if(arr[idx]) {
                    if(changeTypes[idx] & NAME) {
                        update[astr + '.' + keyName] = arr[idx][keyName];
                    }
                    if(changeTypes[idx] & VALUE) {
                        if(isSimpleValueProp) {
                            update[astr + '.' + valueName] = (changeTypes[idx] & UNSET) ? null : arr[idx][valueName];
                        } else {
                            update[astr + '.' + valueName] = (changeTypes[idx] & UNSET) ? null : nestedProperty(arr[idx], valueName).get();
                        }
                    }
                } else {
                    update[astr] = null;
                }
            }

            return update;
        }
    };

    return obj;
};

},{"./nested_property":360}],357:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/* eslint-disable no-console */

var config = require('../plot_api/plot_config');

var loggers = module.exports = {};

/**
 * ------------------------------------------
 * debugging tools
 * ------------------------------------------
 */

loggers.log = function() {
    if(config.logging > 1) {
        var messages = ['LOG:'];

        for(var i = 0; i < arguments.length; i++) {
            messages.push(arguments[i]);
        }

        apply(console.trace || console.log, messages);
    }
};

loggers.warn = function() {
    if(config.logging > 0) {
        var messages = ['WARN:'];

        for(var i = 0; i < arguments.length; i++) {
            messages.push(arguments[i]);
        }

        apply(console.trace || console.log, messages);
    }
};

loggers.error = function() {
    if(config.logging > 0) {
        var messages = ['ERROR:'];

        for(var i = 0; i < arguments.length; i++) {
            messages.push(arguments[i]);
        }

        apply(console.error, messages);
    }
};

/*
 * Robust apply, for IE9 where console.log doesn't support
 * apply like other functions do
 */
function apply(f, args) {
    if(f.apply) {
        f.apply(f, args);
    }
    else {
        for(var i = 0; i < args.length; i++) {
            f(args[i]);
        }
    }
}

},{"../plot_api/plot_config":384}],358:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


exports.init2dArray = function(rowLength, colLength) {
    var array = new Array(rowLength);
    for(var i = 0; i < rowLength; i++) array[i] = new Array(colLength);
    return array;
};

/**
 * transpose a (possibly ragged) 2d array z. inspired by
 * http://stackoverflow.com/questions/17428587/
 * transposing-a-2d-array-in-javascript
 */
exports.transposeRagged = function(z) {
    var maxlen = 0,
        zlen = z.length,
        i,
        j;
    // Maximum row length:
    for(i = 0; i < zlen; i++) maxlen = Math.max(maxlen, z[i].length);

    var t = new Array(maxlen);
    for(i = 0; i < maxlen; i++) {
        t[i] = new Array(zlen);
        for(j = 0; j < zlen; j++) t[i][j] = z[j][i];
    }

    return t;
};

// our own dot function so that we don't need to include numeric
exports.dot = function(x, y) {
    if(!(x.length && y.length) || x.length !== y.length) return null;

    var len = x.length,
        out,
        i;

    if(x[0].length) {
        // mat-vec or mat-mat
        out = new Array(len);
        for(i = 0; i < len; i++) out[i] = exports.dot(x[i], y);
    }
    else if(y[0].length) {
        // vec-mat
        var yTranspose = exports.transposeRagged(y);
        out = new Array(yTranspose.length);
        for(i = 0; i < yTranspose.length; i++) out[i] = exports.dot(x, yTranspose[i]);
    }
    else {
        // vec-vec
        out = 0;
        for(i = 0; i < len; i++) out += x[i] * y[i];
    }

    return out;
};

// translate by (x,y)
exports.translationMatrix = function(x, y) {
    return [[1, 0, x], [0, 1, y], [0, 0, 1]];
};

// rotate by alpha around (0,0)
exports.rotationMatrix = function(alpha) {
    var a = alpha * Math.PI / 180;
    return [[Math.cos(a), -Math.sin(a), 0],
            [Math.sin(a), Math.cos(a), 0],
            [0, 0, 1]];
};

// rotate by alpha around (x,y)
exports.rotationXYMatrix = function(a, x, y) {
    return exports.dot(
        exports.dot(exports.translationMatrix(x, y),
                    exports.rotationMatrix(a)),
        exports.translationMatrix(-x, -y));
};

// applies a 2D transformation matrix to either x and y params or an [x,y] array
exports.apply2DTransform = function(transform) {
    return function() {
        var args = arguments;
        if(args.length === 3) {
            args = args[0];
        }// from map
        var xy = arguments.length === 1 ? args[0] : [args[0], args[1]];
        return exports.dot(transform, [xy[0], xy[1], 1]).slice(0, 2);
    };
};

// applies a 2D transformation matrix to an [x1,y1,x2,y2] array (to transform a segment)
exports.apply2DTransform2 = function(transform) {
    var at = exports.apply2DTransform(transform);
    return function(xys) {
        return at(xys.slice(0, 2)).concat(at(xys.slice(2, 4)));
    };
};

},{}],359:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * sanitized modulus function that always returns in the range [0, d)
 * rather than (-d, 0] if v is negative
 */
module.exports = function mod(v, d) {
    var out = v % d;
    return out < 0 ? out + d : out;
};

},{}],360:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var isArray = require('./is_array');
var isPlainObject = require('./is_plain_object');
var containerArrayMatch = require('../plot_api/container_array_match');

/**
 * convert a string s (such as 'xaxis.range[0]')
 * representing a property of nested object into set and get methods
 * also return the string and object so we don't have to keep track of them
 * allows [-1] for an array index, to set a property inside all elements
 * of an array
 * eg if obj = {arr: [{a: 1}, {a: 2}]}
 * you can do p = nestedProperty(obj, 'arr[-1].a')
 * but you cannot set the array itself this way, to do that
 * just set the whole array.
 * eg if obj = {arr: [1, 2, 3]}
 * you can't do nestedProperty(obj, 'arr[-1]').set(5)
 * but you can do nestedProperty(obj, 'arr').set([5, 5, 5])
 */
module.exports = function nestedProperty(container, propStr) {
    if(isNumeric(propStr)) propStr = String(propStr);
    else if(typeof propStr !== 'string' ||
            propStr.substr(propStr.length - 4) === '[-1]') {
        throw 'bad property string';
    }

    var j = 0,
        propParts = propStr.split('.'),
        indexed,
        indices,
        i;

    // check for parts of the nesting hierarchy that are numbers (ie array elements)
    while(j < propParts.length) {
        // look for non-bracket chars, then any number of [##] blocks
        indexed = String(propParts[j]).match(/^([^\[\]]*)((\[\-?[0-9]*\])+)$/);
        if(indexed) {
            if(indexed[1]) propParts[j] = indexed[1];
            // allow propStr to start with bracketed array indices
            else if(j === 0) propParts.splice(0, 1);
            else throw 'bad property string';

            indices = indexed[2]
                .substr(1, indexed[2].length - 2)
                .split('][');

            for(i = 0; i < indices.length; i++) {
                j++;
                propParts.splice(j, 0, Number(indices[i]));
            }
        }
        j++;
    }

    if(typeof container !== 'object') {
        return badContainer(container, propStr, propParts);
    }

    return {
        set: npSet(container, propParts, propStr),
        get: npGet(container, propParts),
        astr: propStr,
        parts: propParts,
        obj: container
    };
};

function npGet(cont, parts) {
    return function() {
        var curCont = cont,
            curPart,
            allSame,
            out,
            i,
            j;

        for(i = 0; i < parts.length - 1; i++) {
            curPart = parts[i];
            if(curPart === -1) {
                allSame = true;
                out = [];
                for(j = 0; j < curCont.length; j++) {
                    out[j] = npGet(curCont[j], parts.slice(i + 1))();
                    if(out[j] !== out[0]) allSame = false;
                }
                return allSame ? out[0] : out;
            }
            if(typeof curPart === 'number' && !isArray(curCont)) {
                return undefined;
            }
            curCont = curCont[curPart];
            if(typeof curCont !== 'object' || curCont === null) {
                return undefined;
            }
        }

        // only hit this if parts.length === 1
        if(typeof curCont !== 'object' || curCont === null) return undefined;

        out = curCont[parts[i]];
        if(out === null) return undefined;
        return out;
    };
}

/*
 * Can this value be deleted? We can delete any empty object (null, undefined, [], {})
 * EXCEPT empty data arrays, {} inside an array, or anything INSIDE an *args* array.
 *
 * Info arrays can be safely deleted, but not deleting them has no ill effects other
 * than leaving a trace or layout object with some cruft in it.
 *
 * Deleting data arrays can change the meaning of the object, as `[]` means there is
 * data for this attribute, it's just empty right now while `undefined` means the data
 * should be filled in with defaults to match other data arrays.
 *
 * `{}` inside an array means "the default object" which is clearly different from
 * popping it off the end of the array, or setting it `undefined` inside the array.
 *
 * *args* arrays get passed directly to API methods and we should respect precisely
 * what the user has put there - although if the whole *args* array is empty it's fine
 * to delete that.
 *
 * So we do some simple tests here to find known non-data arrays but don't worry too
 * much about not deleting some arrays that would actually be safe to delete.
 */
var INFO_PATTERNS = /(^|\.)((domain|range)(\.[xy])?|args|parallels)$/;
var ARGS_PATTERN = /(^|\.)args\[/;
function isDeletable(val, propStr) {
    if(!emptyObj(val) ||
        (isPlainObject(val) && propStr.charAt(propStr.length - 1) === ']') ||
        (propStr.match(ARGS_PATTERN) && val !== undefined)
    ) {
        return false;
    }
    if(!isArray(val)) return true;

    if(propStr.match(INFO_PATTERNS)) return true;

    var match = containerArrayMatch(propStr);
    // if propStr matches the container array itself, index is an empty string
    // otherwise we've matched something inside the container array, which may
    // still be a data array.
    return match && (match.index === '');
}

function npSet(cont, parts, propStr) {
    return function(val) {
        var curCont = cont,
            propPart = '',
            containerLevels = [[cont, propPart]],
            toDelete = isDeletable(val, propStr),
            curPart,
            i;

        for(i = 0; i < parts.length - 1; i++) {
            curPart = parts[i];

            if(typeof curPart === 'number' && !isArray(curCont)) {
                throw 'array index but container is not an array';
            }

            // handle special -1 array index
            if(curPart === -1) {
                toDelete = !setArrayAll(curCont, parts.slice(i + 1), val, propStr);
                if(toDelete) break;
                else return;
            }

            if(!checkNewContainer(curCont, curPart, parts[i + 1], toDelete)) {
                break;
            }

            curCont = curCont[curPart];

            if(typeof curCont !== 'object' || curCont === null) {
                throw 'container is not an object';
            }

            propPart = joinPropStr(propPart, curPart);

            containerLevels.push([curCont, propPart]);
        }

        if(toDelete) {
            if(i === parts.length - 1) delete curCont[parts[i]];
            pruneContainers(containerLevels);
        }
        else curCont[parts[i]] = val;
    };
}

function joinPropStr(propStr, newPart) {
    var toAdd = newPart;
    if(isNumeric(newPart)) toAdd = '[' + newPart + ']';
    else if(propStr) toAdd = '.' + newPart;

    return propStr + toAdd;
}

// handle special -1 array index
function setArrayAll(containerArray, innerParts, val, propStr) {
    var arrayVal = isArray(val),
        allSet = true,
        thisVal = val,
        thisPropStr = propStr.replace('-1', 0),
        deleteThis = arrayVal ? false : isDeletable(val, thisPropStr),
        firstPart = innerParts[0],
        i;

    for(i = 0; i < containerArray.length; i++) {
        thisPropStr = propStr.replace('-1', i);
        if(arrayVal) {
            thisVal = val[i % val.length];
            deleteThis = isDeletable(thisVal, thisPropStr);
        }
        if(deleteThis) allSet = false;
        if(!checkNewContainer(containerArray, i, firstPart, deleteThis)) {
            continue;
        }
        npSet(containerArray[i], innerParts, propStr.replace('-1', i))(thisVal);
    }
    return allSet;
}

/**
 * make new sub-container as needed.
 * returns false if there's no container and none is needed
 * because we're only deleting an attribute
 */
function checkNewContainer(container, part, nextPart, toDelete) {
    if(container[part] === undefined) {
        if(toDelete) return false;

        if(typeof nextPart === 'number') container[part] = [];
        else container[part] = {};
    }
    return true;
}

function pruneContainers(containerLevels) {
    var i,
        j,
        curCont,
        propPart,
        keys,
        remainingKeys;
    for(i = containerLevels.length - 1; i >= 0; i--) {
        curCont = containerLevels[i][0];
        propPart = containerLevels[i][1];

        remainingKeys = false;
        if(isArray(curCont)) {
            for(j = curCont.length - 1; j >= 0; j--) {
                if(isDeletable(curCont[j], joinPropStr(propPart, j))) {
                    if(remainingKeys) curCont[j] = undefined;
                    else curCont.pop();
                }
                else remainingKeys = true;
            }
        }
        else if(typeof curCont === 'object' && curCont !== null) {
            keys = Object.keys(curCont);
            remainingKeys = false;
            for(j = keys.length - 1; j >= 0; j--) {
                if(isDeletable(curCont[keys[j]], joinPropStr(propPart, keys[j]))) {
                    delete curCont[keys[j]];
                }
                else remainingKeys = true;
            }
        }
        if(remainingKeys) return;
    }
}

function emptyObj(obj) {
    if(obj === undefined || obj === null) return true;
    if(typeof obj !== 'object') return false; // any plain value
    if(isArray(obj)) return !obj.length; // []
    return !Object.keys(obj).length; // {}
}

function badContainer(container, propStr, propParts) {
    return {
        set: function() { throw 'bad container'; },
        get: function() {},
        astr: propStr,
        parts: propParts,
        obj: container
    };
}

},{"../plot_api/container_array_match":379,"./is_array":354,"./is_plain_object":355,"fast-isnumeric":68}],361:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// Simple helper functions
// none of these need any external deps

module.exports = function noop() {};

},{}],362:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var NOTEDATA = [];

/**
 * notifier
 * @param {String} text The person's user name
 * @param {Number} [delay=1000] The delay time in milliseconds
 *          or 'long' which provides 2000 ms delay time.
 * @return {undefined} this function does not return a value
 */
module.exports = function(text, displayLength) {
    if(NOTEDATA.indexOf(text) !== -1) return;

    NOTEDATA.push(text);

    var ts = 1000;
    if(isNumeric(displayLength)) ts = displayLength;
    else if(displayLength === 'long') ts = 3000;

    var notifierContainer = d3.select('body')
        .selectAll('.plotly-notifier')
        .data([0]);
    notifierContainer.enter()
        .append('div')
        .classed('plotly-notifier', true);

    var notes = notifierContainer.selectAll('.notifier-note').data(NOTEDATA);

    function killNote(transition) {
        transition
            .duration(700)
            .style('opacity', 0)
            .each('end', function(thisText) {
                var thisIndex = NOTEDATA.indexOf(thisText);
                if(thisIndex !== -1) NOTEDATA.splice(thisIndex, 1);
                d3.select(this).remove();
            });
    }

    notes.enter().append('div')
        .classed('notifier-note', true)
        .style('opacity', 0)
        .each(function(thisText) {
            var note = d3.select(this);

            note.append('button')
                .classed('notifier-close', true)
                .html('&times;')
                .on('click', function() {
                    note.transition().call(killNote);
                });

            var p = note.append('p');
            var lines = thisText.split(/<br\s*\/?>/g);
            for(var i = 0; i < lines.length; i++) {
                if(i) p.append('br');
                p.append('span').text(lines[i]);
            }

            note.transition()
                    .duration(700)
                    .style('opacity', 1)
                .transition()
                    .delay(ts)
                    .call(killNote);
        });
};

},{"d3":62,"fast-isnumeric":68}],363:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var setCursor = require('./setcursor');

var STASHATTR = 'data-savedcursor';
var NO_CURSOR = '!!';

/*
 * works with our CSS cursor classes (see css/_cursor.scss)
 * to override a previous cursor set on d3 single-element selections,
 * by moving the name of the original cursor to the data-savedcursor attr.
 * omit cursor to revert to the previously set value.
 */
module.exports = function overrideCursor(el3, csr) {
    var savedCursor = el3.attr(STASHATTR);
    if(csr) {
        if(!savedCursor) {
            var classes = (el3.attr('class') || '').split(' ');
            for(var i = 0; i < classes.length; i++) {
                var cls = classes[i];
                if(cls.indexOf('cursor-') === 0) {
                    el3.attr(STASHATTR, cls.substr(7))
                        .classed(cls, false);
                }
            }
            if(!el3.attr(STASHATTR)) {
                el3.attr(STASHATTR, NO_CURSOR);
            }
        }
        setCursor(el3, csr);
    }
    else if(savedCursor) {
        el3.attr(STASHATTR, null);

        if(savedCursor === NO_CURSOR) setCursor(el3);
        else setCursor(el3, savedCursor);
    }
};

},{"./setcursor":371}],364:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var dot = require('./matrix').dot;
var BADNUM = require('../constants/numerical').BADNUM;

var polygon = module.exports = {};

/**
 * Turn an array of [x, y] pairs into a polygon object
 * that can test if points are inside it
 *
 * @param ptsIn Array of [x, y] pairs
 *
 * @returns polygon Object {xmin, xmax, ymin, ymax, pts, contains}
 *      (x|y)(min|max) are the bounding rect of the polygon
 *      pts is the original array, with the first pair repeated at the end
 *      contains is a function: (pt, omitFirstEdge)
 *          pt is the [x, y] pair to test
 *          omitFirstEdge truthy means points exactly on the first edge don't
 *              count. This is for use adding one polygon to another so we
 *              don't double-count the edge where they meet.
 *          returns boolean: is pt inside the polygon (including on its edges)
 */
polygon.tester = function tester(ptsIn) {
    var pts = ptsIn.slice(),
        xmin = pts[0][0],
        xmax = xmin,
        ymin = pts[0][1],
        ymax = ymin;

    pts.push(pts[0]);
    for(var i = 1; i < pts.length; i++) {
        xmin = Math.min(xmin, pts[i][0]);
        xmax = Math.max(xmax, pts[i][0]);
        ymin = Math.min(ymin, pts[i][1]);
        ymax = Math.max(ymax, pts[i][1]);
    }

    // do we have a rectangle? Handle this here, so we can use the same
    // tester for the rectangular case without sacrificing speed

    var isRect = false,
        rectFirstEdgeTest;

    if(pts.length === 5) {
        if(pts[0][0] === pts[1][0]) { // vert, horz, vert, horz
            if(pts[2][0] === pts[3][0] &&
                    pts[0][1] === pts[3][1] &&
                    pts[1][1] === pts[2][1]) {
                isRect = true;
                rectFirstEdgeTest = function(pt) { return pt[0] === pts[0][0]; };
            }
        }
        else if(pts[0][1] === pts[1][1]) { // horz, vert, horz, vert
            if(pts[2][1] === pts[3][1] &&
                    pts[0][0] === pts[3][0] &&
                    pts[1][0] === pts[2][0]) {
                isRect = true;
                rectFirstEdgeTest = function(pt) { return pt[1] === pts[0][1]; };
            }
        }
    }

    function rectContains(pt, omitFirstEdge) {
        var x = pt[0],
            y = pt[1];

        if(x === BADNUM || x < xmin || x > xmax || y === BADNUM || y < ymin || y > ymax) {
            // pt is outside the bounding box of polygon
            return false;
        }
        if(omitFirstEdge && rectFirstEdgeTest(pt)) return false;

        return true;
    }

    function contains(pt, omitFirstEdge) {
        var x = pt[0],
            y = pt[1];

        if(x === BADNUM || x < xmin || x > xmax || y === BADNUM || y < ymin || y > ymax) {
            // pt is outside the bounding box of polygon
            return false;
        }

        var imax = pts.length,
            x1 = pts[0][0],
            y1 = pts[0][1],
            crossings = 0,
            i,
            x0,
            y0,
            xmini,
            ycross;

        for(i = 1; i < imax; i++) {
            // find all crossings of a vertical line upward from pt with
            // polygon segments
            // crossings exactly at xmax don't count, unless the point is
            // exactly on the segment, then it counts as inside.
            x0 = x1;
            y0 = y1;
            x1 = pts[i][0];
            y1 = pts[i][1];
            xmini = Math.min(x0, x1);

            // outside the bounding box of this segment, it's only a crossing
            // if it's below the box.
            if(x < xmini || x > Math.max(x0, x1) || y > Math.max(y0, y1)) {
                continue;
            }
            else if(y < Math.min(y0, y1)) {
                // don't count the left-most point of the segment as a crossing
                // because we don't want to double-count adjacent crossings
                // UNLESS the polygon turns past vertical at exactly this x
                // Note that this is repeated below, but we can't factor it out
                // because
                if(x !== xmini) crossings++;
            }
            // inside the bounding box, check the actual line intercept
            else {
                // vertical segment - we know already that the point is exactly
                // on the segment, so mark the crossing as exactly at the point.
                if(x1 === x0) ycross = y;
                // any other angle
                else ycross = y0 + (x - x0) * (y1 - y0) / (x1 - x0);

                // exactly on the edge: counts as inside the polygon, unless it's the
                // first edge and we're omitting it.
                if(y === ycross) {
                    if(i === 1 && omitFirstEdge) return false;
                    return true;
                }

                if(y <= ycross && x !== xmini) crossings++;
            }
        }

        // if we've gotten this far, odd crossings means inside, even is outside
        return crossings % 2 === 1;
    }

    return {
        xmin: xmin,
        xmax: xmax,
        ymin: ymin,
        ymax: ymax,
        pts: pts,
        contains: isRect ? rectContains : contains,
        isRect: isRect
    };
};

/**
 * Test if a segment of a points array is bent or straight
 *
 * @param pts Array of [x, y] pairs
 * @param start the index of the proposed start of the straight section
 * @param end the index of the proposed end point
 * @param tolerance the max distance off the line connecting start and end
 *      before the line counts as bent
 * @returns boolean: true means this segment is bent, false means straight
 */
var isBent = polygon.isSegmentBent = function isBent(pts, start, end, tolerance) {
    var startPt = pts[start],
        segment = [pts[end][0] - startPt[0], pts[end][1] - startPt[1]],
        segmentSquared = dot(segment, segment),
        segmentLen = Math.sqrt(segmentSquared),
        unitPerp = [-segment[1] / segmentLen, segment[0] / segmentLen],
        i,
        part,
        partParallel;

    for(i = start + 1; i < end; i++) {
        part = [pts[i][0] - startPt[0], pts[i][1] - startPt[1]];
        partParallel = dot(part, segment);

        if(partParallel < 0 || partParallel > segmentSquared ||
            Math.abs(dot(part, unitPerp)) > tolerance) return true;
    }
    return false;
};

/**
 * Make a filtering polygon, to minimize the number of segments
 *
 * @param pts Array of [x, y] pairs (must start with at least 1 pair)
 * @param tolerance the maximum deviation from straight allowed for
 *      removing points to simplify the polygon
 *
 * @returns Object {addPt, raw, filtered}
 *      addPt is a function(pt: [x, y] pair) to add a raw point and
 *          continue filtering
 *      raw is all the input points
 *      filtered is the resulting filtered Array of [x, y] pairs
 */
polygon.filter = function filter(pts, tolerance) {
    var ptsFiltered = [pts[0]],
        doneRawIndex = 0,
        doneFilteredIndex = 0;

    function addPt(pt) {
        pts.push(pt);
        var prevFilterLen = ptsFiltered.length,
            iLast = doneRawIndex;
        ptsFiltered.splice(doneFilteredIndex + 1);

        for(var i = iLast + 1; i < pts.length; i++) {
            if(i === pts.length - 1 || isBent(pts, iLast, i + 1, tolerance)) {
                ptsFiltered.push(pts[i]);
                if(ptsFiltered.length < prevFilterLen - 2) {
                    doneRawIndex = i;
                    doneFilteredIndex = ptsFiltered.length - 1;
                }
                iLast = i;
            }
        }
    }

    if(pts.length > 1) {
        var lastPt = pts.pop();
        addPt(lastPt);
    }

    return {
        addPt: addPt,
        raw: pts,
        filtered: ptsFiltered
    };
};

},{"../constants/numerical":334,"./matrix":358}],365:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * Push array with unique items
 *
 * @param {array} array
 *  array to be filled
 * @param {any} item
 *  item to be or not to be inserted
 * @return {array}
 *  ref to array (now possibly containing one more item)
 *
 */
module.exports = function pushUnique(array, item) {
    if(item instanceof RegExp) {
        var itemStr = item.toString(),
            i;
        for(i = 0; i < array.length; i++) {
            if(array[i] instanceof RegExp && array[i].toString() === itemStr) {
                return array;
            }
        }
        array.push(item);
    }
    else if(item && array.indexOf(item) === -1) array.push(item);

    return array;
};

},{}],366:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../lib');
var config = require('../plot_api/plot_config');


/**
 * Copy arg array *without* removing `undefined` values from objects.
 *
 * @param gd
 * @param args
 * @returns {Array}
 */
function copyArgArray(gd, args) {
    var copy = [];
    var arg;

    for(var i = 0; i < args.length; i++) {
        arg = args[i];

        if(arg === gd) copy[i] = arg;
        else if(typeof arg === 'object') {
            copy[i] = Array.isArray(arg) ?
                Lib.extendDeep([], arg) :
                Lib.extendDeepAll({}, arg);
        }
        else copy[i] = arg;
    }

    return copy;
}


// -----------------------------------------------------
// Undo/Redo queue for plots
// -----------------------------------------------------


var queue = {};

// TODO: disable/enable undo and redo buttons appropriately

/**
 * Add an item to the undoQueue for a graphDiv
 *
 * @param gd
 * @param undoFunc Function undo this operation
 * @param undoArgs Args to supply undoFunc with
 * @param redoFunc Function to redo this operation
 * @param redoArgs Args to supply redoFunc with
 */
queue.add = function(gd, undoFunc, undoArgs, redoFunc, redoArgs) {
    var queueObj,
        queueIndex;

    // make sure we have the queue and our position in it
    gd.undoQueue = gd.undoQueue || {index: 0, queue: [], sequence: false};
    queueIndex = gd.undoQueue.index;

    // if we're already playing an undo or redo, or if this is an auto operation
    // (like pane resize... any others?) then we don't save this to the undo queue
    if(gd.autoplay) {
        if(!gd.undoQueue.inSequence) gd.autoplay = false;
        return;
    }

    // if we're not in a sequence or are just starting, we need a new queue item
    if(!gd.undoQueue.sequence || gd.undoQueue.beginSequence) {
        queueObj = {undo: {calls: [], args: []}, redo: {calls: [], args: []}};
        gd.undoQueue.queue.splice(queueIndex, gd.undoQueue.queue.length - queueIndex, queueObj);
        gd.undoQueue.index += 1;
    } else {
        queueObj = gd.undoQueue.queue[queueIndex - 1];
    }
    gd.undoQueue.beginSequence = false;

    // we unshift to handle calls for undo in a forward for loop later
    if(queueObj) {
        queueObj.undo.calls.unshift(undoFunc);
        queueObj.undo.args.unshift(undoArgs);
        queueObj.redo.calls.push(redoFunc);
        queueObj.redo.args.push(redoArgs);
    }

    if(gd.undoQueue.queue.length > config.queueLength) {
        gd.undoQueue.queue.shift();
        gd.undoQueue.index--;
    }
};

/**
 * Begin a sequence of undoQueue changes
 *
 * @param gd
 */
queue.startSequence = function(gd) {
    gd.undoQueue = gd.undoQueue || {index: 0, queue: [], sequence: false};
    gd.undoQueue.sequence = true;
    gd.undoQueue.beginSequence = true;
};

/**
 * Stop a sequence of undoQueue changes
 *
 * Call this *after* you're sure your undo chain has ended
 *
 * @param gd
 */
queue.stopSequence = function(gd) {
    gd.undoQueue = gd.undoQueue || {index: 0, queue: [], sequence: false};
    gd.undoQueue.sequence = false;
    gd.undoQueue.beginSequence = false;
};

/**
 * Move one step back in the undo queue, and undo the object there.
 *
 * @param gd
 */
queue.undo = function undo(gd) {
    var queueObj, i;

    if(gd.framework && gd.framework.isPolar) {
        gd.framework.undo();
        return;
    }
    if(gd.undoQueue === undefined ||
            isNaN(gd.undoQueue.index) ||
            gd.undoQueue.index <= 0) {
        return;
    }

    // index is pointing to next *forward* queueObj, point to the one we're undoing
    gd.undoQueue.index--;

    // get the queueObj for instructions on how to undo
    queueObj = gd.undoQueue.queue[gd.undoQueue.index];

    // this sequence keeps things from adding to the queue during undo/redo
    gd.undoQueue.inSequence = true;
    for(i = 0; i < queueObj.undo.calls.length; i++) {
        queue.plotDo(gd, queueObj.undo.calls[i], queueObj.undo.args[i]);
    }
    gd.undoQueue.inSequence = false;
    gd.autoplay = false;
};

/**
 * Redo the current object in the undo, then move forward in the queue.
 *
 * @param gd
 */
queue.redo = function redo(gd) {
    var queueObj, i;

    if(gd.framework && gd.framework.isPolar) {
        gd.framework.redo();
        return;
    }
    if(gd.undoQueue === undefined ||
            isNaN(gd.undoQueue.index) ||
            gd.undoQueue.index >= gd.undoQueue.queue.length) {
        return;
    }

    // get the queueObj for instructions on how to undo
    queueObj = gd.undoQueue.queue[gd.undoQueue.index];

    // this sequence keeps things from adding to the queue during undo/redo
    gd.undoQueue.inSequence = true;
    for(i = 0; i < queueObj.redo.calls.length; i++) {
        queue.plotDo(gd, queueObj.redo.calls[i], queueObj.redo.args[i]);
    }
    gd.undoQueue.inSequence = false;
    gd.autoplay = false;

    // index is pointing to the thing we just redid, move it
    gd.undoQueue.index++;
};

/**
 * Called by undo/redo to make the actual changes.
 *
 * Not meant to be called publically, but included for mocking out in tests.
 *
 * @param gd
 * @param func
 * @param args
 */
queue.plotDo = function(gd, func, args) {
    gd.autoplay = true;

    // this *won't* copy gd and it preserves `undefined` properties!
    args = copyArgArray(gd, args);

    // call the supplied function
    func.apply(null, args);
};

module.exports = queue;

},{"../lib":353,"../plot_api/plot_config":384}],367:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// Simple helper functions
// none of these need any external deps

/*
 * make a regex for matching counter ids/names ie xaxis, xaxis2, xaxis10...
 *  eg: regexCounter('x')
 * tail is an optional piece after the id
 *  eg regexCounter('scene', '.annotations') for scene2.annotations etc.
 */
exports.counter = function(head, tail, openEnded) {
    return new RegExp('^' + head + '([2-9]|[1-9][0-9]+)?' +
        (tail || '') + (openEnded ? '' : '$'));
};

},{}],368:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// ASCEND: chop off the last nesting level - either [<n>] or .<key> - to ascend
// the attribute tree. the remaining attrString is in match[1]
var ASCEND = /^(.*)(\.[^\.\[\]]+|\[\d\])$/;

// SIMPLEATTR: is this an un-nested attribute? (no dots or brackets)
var SIMPLEATTR = /^[^\.\[\]]+$/;

/*
 * calculate a relative attribute string, similar to a relative path
 *
 * @param {string} baseAttr:
 *   an attribute string, such as 'annotations[3].x'. The "current location"
 *   is the attribute string minus the last component ('annotations[3]')
 * @param {string} relativeAttr:
 *   a route to the desired attribute string, using '^' to ascend
 *
 * @return {string} attrString:
 *   for example:
 *     relativeAttr('annotations[3].x', 'y') = 'annotations[3].y'
 *     relativeAttr('annotations[3].x', '^[2].z') = 'annotations[2].z'
 *     relativeAttr('annotations[3].x', '^^margin') = 'margin'
 *     relativeAttr('annotations[3].x', '^^margin.r') = 'margin.r'
 */
module.exports = function(baseAttr, relativeAttr) {
    while(relativeAttr) {
        var match = baseAttr.match(ASCEND);

        if(match) baseAttr = match[1];
        else if(baseAttr.match(SIMPLEATTR)) baseAttr = '';
        else throw new Error('bad relativeAttr call:' + [baseAttr, relativeAttr]);

        if(relativeAttr.charAt(0) === '^') relativeAttr = relativeAttr.slice(1);
        else break;
    }

    if(baseAttr && relativeAttr.charAt(0) !== '[') {
        return baseAttr + '.' + relativeAttr;
    }
    return baseAttr + relativeAttr;
};

},{}],369:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isArray = require('./is_array');
var isPlainObject = require('./is_plain_object');

/**
 * Relink private _keys and keys with a function value from one container
 * to the new container.
 * Relink means copying if object is pass-by-value and adding a reference
 * if object is pass-by-ref.
 * This prevents deepCopying massive structures like a webgl context.
 */
module.exports = function relinkPrivateKeys(toContainer, fromContainer) {
    var keys = Object.keys(fromContainer || {});

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i],
            fromVal = fromContainer[k],
            toVal = toContainer[k];

        if(k.charAt(0) === '_' || typeof fromVal === 'function') {

            // if it already exists at this point, it's something
            // that we recreate each time around, so ignore it
            if(k in toContainer) continue;

            toContainer[k] = fromVal;
        }
        else if(isArray(fromVal) && isArray(toVal) && isPlainObject(fromVal[0])) {

            // recurse into arrays containers
            for(var j = 0; j < fromVal.length; j++) {
                if(isPlainObject(fromVal[j]) && isPlainObject(toVal[j])) {
                    relinkPrivateKeys(toVal[j], fromVal[j]);
                }
            }
        }
        else if(isPlainObject(fromVal) && isPlainObject(toVal)) {

            // recurse into objects, but only if they still exist
            relinkPrivateKeys(toVal, fromVal);

            if(!Object.keys(toVal).length) delete toContainer[k];
        }
    }
};

},{"./is_array":354,"./is_plain_object":355}],370:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var loggers = require('./loggers');


/**
 * findBin - find the bin for val - note that it can return outside the
 * bin range any pos. or neg. integer for linear bins, or -1 or
 * bins.length-1 for explicit.
 * bins is either an object {start,size,end} or an array length #bins+1
 * bins can be either increasing or decreasing but must be monotonic
 * for linear bins, we can just calculate. For listed bins, run a binary
 * search linelow (truthy) says the bin boundary should be attributed to
 * the lower bin rather than the default upper bin
 */
exports.findBin = function(val, bins, linelow) {
    if(isNumeric(bins.start)) {
        return linelow ?
            Math.ceil((val - bins.start) / bins.size) - 1 :
            Math.floor((val - bins.start) / bins.size);
    }
    else {
        var n1 = 0,
            n2 = bins.length,
            c = 0,
            n,
            test;
        if(bins[bins.length - 1] >= bins[0]) {
            test = linelow ? lessThan : lessOrEqual;
        } else {
            test = linelow ? greaterOrEqual : greaterThan;
        }
        // c is just to avoid infinite loops if there's an error
        while(n1 < n2 && c++ < 100) {
            n = Math.floor((n1 + n2) / 2);
            if(test(bins[n], val)) n1 = n + 1;
            else n2 = n;
        }
        if(c > 90) loggers.log('Long binary search...');
        return n1 - 1;
    }
};

function lessThan(a, b) { return a < b; }
function lessOrEqual(a, b) { return a <= b; }
function greaterThan(a, b) { return a > b; }
function greaterOrEqual(a, b) { return a >= b; }

exports.sorterAsc = function(a, b) { return a - b; };
exports.sorterDes = function(a, b) { return b - a; };

/**
 * find distinct values in an array, lumping together ones that appear to
 * just be off by a rounding error
 * return the distinct values and the minimum difference between any two
 */
exports.distinctVals = function(valsIn) {
    var vals = valsIn.slice();  // otherwise we sort the original array...
    vals.sort(exports.sorterAsc);

    var l = vals.length - 1,
        minDiff = (vals[l] - vals[0]) || 1,
        errDiff = minDiff / (l || 1) / 10000,
        v2 = [vals[0]];

    for(var i = 0; i < l; i++) {
        // make sure values aren't just off by a rounding error
        if(vals[i + 1] > vals[i] + errDiff) {
            minDiff = Math.min(minDiff, vals[i + 1] - vals[i]);
            v2.push(vals[i + 1]);
        }
    }

    return {vals: v2, minDiff: minDiff};
};

/**
 * return the smallest element from (sorted) array arrayIn that's bigger than val,
 * or (reverse) the largest element smaller than val
 * used to find the best tick given the minimum (non-rounded) tick
 * particularly useful for date/time where things are not powers of 10
 * binary search is probably overkill here...
 */
exports.roundUp = function(val, arrayIn, reverse) {
    var low = 0,
        high = arrayIn.length - 1,
        mid,
        c = 0,
        dlow = reverse ? 0 : 1,
        dhigh = reverse ? 1 : 0,
        rounded = reverse ? Math.ceil : Math.floor;
    // c is just to avoid infinite loops if there's an error
    while(low < high && c++ < 100) {
        mid = rounded((low + high) / 2);
        if(arrayIn[mid] <= val) low = mid + dlow;
        else high = mid - dhigh;
    }
    return arrayIn[low];
};

},{"./loggers":357,"fast-isnumeric":68}],371:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// works with our CSS cursor classes (see css/_cursor.scss)
// to apply cursors to d3 single-element selections.
// omit cursor to revert to the default.
module.exports = function setCursor(el3, csr) {
    (el3.attr('class') || '').split(' ').forEach(function(cls) {
        if(cls.indexOf('cursor-') === 0) el3.classed(cls, false);
    });

    if(csr) el3.classed('cursor-' + csr, true);
};

},{}],372:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../components/color');

var noop = function() {};


/**
 * Prints a no webgl error message into the scene container
 * @param {scene instance} scene
 *
 * Expects 'scene' to have property 'container'
 *
 */
module.exports = function showWebGlMsg(scene) {
    for(var prop in scene) {
        if(typeof scene[prop] === 'function') scene[prop] = noop;
    }

    scene.destroy = function() {
        scene.container.parentNode.removeChild(scene.container);
    };

    var div = document.createElement('div');
    div.textContent = 'Webgl is not supported by your browser - visit http://get.webgl.org for more info';
    div.style.cursor = 'pointer';
    div.style.fontSize = '24px';
    div.style.color = Color.defaults[0];

    scene.container.appendChild(div);
    scene.container.style.background = '#FFFFFF';
    scene.container.onclick = function() {
        window.open('http://get.webgl.org');
    };

    // return before setting up camera and onrender methods
    return false;
};

},{"../components/color":233}],373:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');


/**
 * aggNums() returns the result of an aggregate function applied to an array of
 * values, where non-numerical values have been tossed out.
 *
 * @param {function} f - aggregation function (e.g., Math.min)
 * @param {Number} v - initial value (continuing from previous calls)
 *      if there's no continuing value, use null for selector-type
 *      functions (max,min), or 0 for summations
 * @param {Array} a - array to aggregate (may be nested, we will recurse,
 *                    but all elements must have the same dimension)
 * @param {Number} len - maximum length of a to aggregate
 * @return {Number} - result of f applied to a starting from v
 */
exports.aggNums = function(f, v, a, len) {
    var i,
        b;
    if(!len) len = a.length;
    if(!isNumeric(v)) v = false;
    if(Array.isArray(a[0])) {
        b = new Array(len);
        for(i = 0; i < len; i++) b[i] = exports.aggNums(f, v, a[i]);
        a = b;
    }

    for(i = 0; i < len; i++) {
        if(!isNumeric(v)) v = a[i];
        else if(isNumeric(a[i])) v = f(+v, +a[i]);
    }
    return v;
};

/**
 * mean & std dev functions using aggNums, so it handles non-numerics nicely
 * even need to use aggNums instead of .length, to toss out non-numerics
 */
exports.len = function(data) {
    return exports.aggNums(function(a) { return a + 1; }, 0, data);
};

exports.mean = function(data, len) {
    if(!len) len = exports.len(data);
    return exports.aggNums(function(a, b) { return a + b; }, 0, data) / len;
};

exports.variance = function(data, len, mean) {
    if(!len) len = exports.len(data);
    if(!isNumeric(mean)) mean = exports.mean(data, len);

    return exports.aggNums(function(a, b) {
        return a + Math.pow(b - mean, 2);
    }, 0, data) / len;
};

exports.stdev = function(data, len, mean) {
    return Math.sqrt(exports.variance(data, len, mean));
};

/**
 * interp() computes a percentile (quantile) for a given distribution.
 * We interpolate the distribution (to compute quantiles, we follow method #10 here:
 * http://www.amstat.org/publications/jse/v14n3/langford.html).
 * Typically the index or rank (n * arr.length) may be non-integer.
 * For reference: ends are clipped to the extreme values in the array;
 * For box plots: index you get is half a point too high (see
 * http://en.wikipedia.org/wiki/Percentile#Nearest_rank) but note that this definition
 * indexes from 1 rather than 0, so we subtract 1/2 (instead of add).
 *
 * @param {Array} arr - This array contains the values that make up the distribution.
 * @param {Number} n - Between 0 and 1, n = p/100 is such that we compute the p^th percentile.
 * For example, the 50th percentile (or median) corresponds to n = 0.5
 * @return {Number} - percentile
 */
exports.interp = function(arr, n) {
    if(!isNumeric(n)) throw 'n should be a finite number';
    n = n * arr.length - 0.5;
    if(n < 0) return arr[0];
    if(n > arr.length - 1) return arr[arr.length - 1];
    var frac = n % 1;
    return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
};

},{"fast-isnumeric":68}],374:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var rgba = require('color-rgba');

function str2RgbaArray(color) {
    var colorOut = rgba(color);
    return colorOut.length ? colorOut : [0, 0, 0, 1];
}

module.exports = str2RgbaArray;

},{"color-rgba":54}],375:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/* global MathJax:false */

var d3 = require('d3');

var Lib = require('../lib');
var xmlnsNamespaces = require('../constants/xmlns_namespaces');
var stringMappings = require('../constants/string_mappings');
var LINE_SPACING = require('../constants/alignment').LINE_SPACING;

// text converter

function getSize(_selection, _dimension) {
    return _selection.node().getBoundingClientRect()[_dimension];
}

var FIND_TEX = /([^$]*)([$]+[^$]*[$]+)([^$]*)/;

exports.convertToTspans = function(_context, gd, _callback) {
    var str = _context.text();

    // Until we get tex integrated more fully (so it can be used along with non-tex)
    // allow some elements to prohibit it by attaching 'data-notex' to the original
    var tex = (!_context.attr('data-notex')) &&
        (typeof MathJax !== 'undefined') &&
        str.match(FIND_TEX);

    var parent = d3.select(_context.node().parentNode);
    if(parent.empty()) return;
    var svgClass = (_context.attr('class')) ? _context.attr('class').split(' ')[0] : 'text';
    svgClass += '-math';
    parent.selectAll('svg.' + svgClass).remove();
    parent.selectAll('g.' + svgClass + '-group').remove();
    _context.style('display', null)
        .attr({
            // some callers use data-unformatted *from the <text> element* in 'cancel'
            // so we need it here even if we're going to turn it into math
            // these two (plus style and text-anchor attributes) form the key we're
            // going to use for Drawing.bBox
            'data-unformatted': str,
            'data-math': 'N'
        });

    function showText() {
        if(!parent.empty()) {
            svgClass = _context.attr('class') + '-math';
            parent.select('svg.' + svgClass).remove();
        }
        _context.text('')
            .style('white-space', 'pre');

        var hasLink = buildSVGText(_context.node(), str);

        if(hasLink) {
            // at least in Chrome, pointer-events does not seem
            // to be honored in children of <text> elements
            // so if we have an anchor, we have to make the
            // whole element respond
            _context.style('pointer-events', 'all');
        }

        exports.positionText(_context);

        if(_callback) _callback.call(_context);
    }

    if(tex) {
        ((gd && gd._promises) || []).push(new Promise(function(resolve) {
            _context.style('display', 'none');
            var fontSize = parseInt(_context.node().style.fontSize, 10);
            var config = {fontSize: fontSize};

            texToSVG(tex[2], config, function(_svgEl, _glyphDefs, _svgBBox) {
                parent.selectAll('svg.' + svgClass).remove();
                parent.selectAll('g.' + svgClass + '-group').remove();

                var newSvg = _svgEl && _svgEl.select('svg');
                if(!newSvg || !newSvg.node()) {
                    showText();
                    resolve();
                    return;
                }

                var mathjaxGroup = parent.append('g')
                    .classed(svgClass + '-group', true)
                    .attr({
                        'pointer-events': 'none',
                        'data-unformatted': str,
                        'data-math': 'Y'
                    });

                mathjaxGroup.node().appendChild(newSvg.node());

                // stitch the glyph defs
                if(_glyphDefs && _glyphDefs.node()) {
                    newSvg.node().insertBefore(_glyphDefs.node().cloneNode(true),
                                               newSvg.node().firstChild);
                }

                newSvg.attr({
                    'class': svgClass,
                    height: _svgBBox.height,
                    preserveAspectRatio: 'xMinYMin meet'
                })
                .style({overflow: 'visible', 'pointer-events': 'none'});

                var fill = _context.node().style.fill || 'black';
                newSvg.select('g').attr({fill: fill, stroke: fill});

                var newSvgW = getSize(newSvg, 'width'),
                    newSvgH = getSize(newSvg, 'height'),
                    newX = +_context.attr('x') - newSvgW *
                        {start: 0, middle: 0.5, end: 1}[_context.attr('text-anchor') || 'start'],
                    // font baseline is about 1/4 fontSize below centerline
                    textHeight = fontSize || getSize(_context, 'height'),
                    dy = -textHeight / 4;

                if(svgClass[0] === 'y') {
                    mathjaxGroup.attr({
                        transform: 'rotate(' + [-90, +_context.attr('x'), +_context.attr('y')] +
                        ') translate(' + [-newSvgW / 2, dy - newSvgH / 2] + ')'
                    });
                    newSvg.attr({x: +_context.attr('x'), y: +_context.attr('y')});
                }
                else if(svgClass[0] === 'l') {
                    newSvg.attr({x: _context.attr('x'), y: dy - (newSvgH / 2)});
                }
                else if(svgClass[0] === 'a') {
                    newSvg.attr({x: 0, y: dy});
                }
                else {
                    newSvg.attr({x: newX, y: (+_context.attr('y') + dy - newSvgH / 2)});
                }

                if(_callback) _callback.call(_context, mathjaxGroup);
                resolve(mathjaxGroup);
            });
        }));
    }
    else showText();

    return _context;
};


// MathJax

var LT_MATCH = /(<|&lt;|&#60;)/g;
var GT_MATCH = /(>|&gt;|&#62;)/g;

function cleanEscapesForTex(s) {
    return s.replace(LT_MATCH, '\\lt ')
        .replace(GT_MATCH, '\\gt ');
}

function texToSVG(_texString, _config, _callback) {
    var randomID = 'math-output-' + Lib.randstr([], 64);
    var tmpDiv = d3.select('body').append('div')
        .attr({id: randomID})
        .style({visibility: 'hidden', position: 'absolute'})
        .style({'font-size': _config.fontSize + 'px'})
        .text(cleanEscapesForTex(_texString));

    MathJax.Hub.Queue(['Typeset', MathJax.Hub, tmpDiv.node()], function() {
        var glyphDefs = d3.select('body').select('#MathJax_SVG_glyphs');

        if(tmpDiv.select('.MathJax_SVG').empty() || !tmpDiv.select('svg').node()) {
            Lib.log('There was an error in the tex syntax.', _texString);
            _callback();
        }
        else {
            var svgBBox = tmpDiv.select('svg').node().getBoundingClientRect();
            _callback(tmpDiv.select('.MathJax_SVG'), glyphDefs, svgBBox);
        }

        tmpDiv.remove();
    });
}

var TAG_STYLES = {
    // would like to use baseline-shift for sub/sup but FF doesn't support it
    // so we need to use dy along with the uber hacky shift-back-to
    // baseline below
    sup: 'font-size:70%',
    sub: 'font-size:70%',
    b: 'font-weight:bold',
    i: 'font-style:italic',
    a: 'cursor:pointer',
    span: '',
    em: 'font-style:italic;font-weight:bold'
};

// baseline shifts for sub and sup
var SHIFT_DY = {
    sub: '0.3em',
    sup: '-0.6em'
};
// reset baseline by adding a tspan (empty except for a zero-width space)
// with dy of -70% * SHIFT_DY (because font-size=70%)
var RESET_DY = {
    sub: '-0.21em',
    sup: '0.42em'
};
var ZERO_WIDTH_SPACE = '\u200b';

/*
 * Whitelist of protocols in user-supplied urls. Mostly we want to avoid javascript
 * and related attack vectors. The empty items are there for IE, that in various
 * versions treats relative paths as having different flavors of no protocol, while
 * other browsers have these explicitly inherit the protocol of the page they're in.
 */
var PROTOCOLS = ['http:', 'https:', 'mailto:', '', undefined, ':'];

var STRIP_TAGS = new RegExp('</?(' + Object.keys(TAG_STYLES).join('|') + ')( [^>]*)?/?>', 'g');

var ENTITY_TO_UNICODE = Object.keys(stringMappings.entityToUnicode).map(function(k) {
    return {
        regExp: new RegExp('&' + k + ';', 'g'),
        sub: stringMappings.entityToUnicode[k]
    };
});

var NEWLINES = /(\r\n?|\n)/g;

var SPLIT_TAGS = /(<[^<>]*>)/;

var ONE_TAG = /<(\/?)([^ >]*)(\s+(.*))?>/i;

var BR_TAG = /<br(\s+.*)?>/i;

/*
 * style and href: pull them out of either single or double quotes. Also
 * - target: (_blank|_self|_parent|_top|framename)
 *     note that you can't use target to get a popup but if you use popup,
 *     a `framename` will be passed along as the name of the popup window.
 *     per the spec, cannot contain whitespace.
 *     for backward compatibility we default to '_blank'
 * - popup: a custom one for us to enable popup (new window) links. String
 *     for window.open -> strWindowFeatures, like 'menubar=yes,width=500,height=550'
 *     note that at least in Chrome, you need to give at least one property
 *     in this string or the page will open in a new tab anyway. We follow this
 *     convention and will not make a popup if this string is empty.
 *     per the spec, cannot contain whitespace.
 *
 * Because we hack in other attributes with style (sub & sup), drop any trailing
 * semicolon in user-supplied styles so we can consistently append the tag-dependent style
 */
var STYLEMATCH = /(^|[\s"'])style\s*=\s*("([^"]*);?"|'([^']*);?')/i;
var HREFMATCH = /(^|[\s"'])href\s*=\s*("([^"]*)"|'([^']*)')/i;
var TARGETMATCH = /(^|[\s"'])target\s*=\s*("([^"\s]*)"|'([^'\s]*)')/i;
var POPUPMATCH = /(^|[\s"'])popup\s*=\s*("([\w=,]*)"|'([\w=,]*)')/i;

// dedicated matcher for these quoted regexes, that can return their results
// in two different places
function getQuotedMatch(_str, re) {
    if(!_str) return null;
    var match = _str.match(re);
    return match && (match[3] || match[4]);
}

var COLORMATCH = /(^|;)\s*color:/;

exports.plainText = function(_str) {
    // strip out our pseudo-html so we have a readable
    // version to put into text fields
    return (_str || '').replace(STRIP_TAGS, ' ');
};

function replaceFromMapObject(_str, list) {
    if(!_str) return '';

    for(var i = 0; i < list.length; i++) {
        var item = list[i];
        _str = _str.replace(item.regExp, item.sub);
    }

    return _str;
}

function convertEntities(_str) {
    return replaceFromMapObject(_str, ENTITY_TO_UNICODE);
}

/*
 * buildSVGText: convert our pseudo-html into SVG tspan elements, and attach these
 * to containerNode
 *
 * @param {svg text element} containerNode: the <text> node to insert this text into
 * @param {string} str: the pseudo-html string to convert to svg
 *
 * @returns {bool}: does the result contain any links? We need to handle the text element
 *   somewhat differently if it does, so just keep track of this when it happens.
 */
function buildSVGText(containerNode, str) {
    str = convertEntities(str)
        /*
         * Normalize behavior between IE and others wrt newlines and whitespace:pre
         * this combination makes IE barf https://github.com/plotly/plotly.js/issues/746
         * Chrome and FF display \n, \r, or \r\n as a space in this mode.
         * I feel like at some point we turned these into <br> but currently we don't so
         * I'm just going to cement what we do now in Chrome and FF
         */
        .replace(NEWLINES, ' ');

    var hasLink = false;

    // as we're building the text, keep track of what elements we're nested inside
    // nodeStack will be an array of {node, type, style, href, target, popup}
    // where only type: 'a' gets the last 3 and node is only added when it's created
    var nodeStack = [];
    var currentNode;
    var currentLine = -1;

    function newLine() {
        currentLine++;

        var lineNode = document.createElementNS(xmlnsNamespaces.svg, 'tspan');
        d3.select(lineNode).attr({
            class: 'line',
            dy: (currentLine * LINE_SPACING) + 'em'
        });
        containerNode.appendChild(lineNode);

        currentNode = lineNode;

        var oldNodeStack = nodeStack;
        nodeStack = [{node: lineNode}];

        if(oldNodeStack.length > 1) {
            for(var i = 1; i < oldNodeStack.length; i++) {
                enterNode(oldNodeStack[i]);
            }
        }
    }

    function enterNode(nodeSpec) {
        var type = nodeSpec.type;
        var nodeAttrs = {};
        var nodeType;

        if(type === 'a') {
            nodeType = 'a';
            var target = nodeSpec.target;
            var href = nodeSpec.href;
            var popup = nodeSpec.popup;
            if(href) {
                nodeAttrs = {
                    'xlink:xlink:show': (target === '_blank' || target.charAt(0) !== '_') ? 'new' : 'replace',
                    target: target,
                    'xlink:xlink:href': href
                };
                if(popup) {
                    // security: href and target are not inserted as code but
                    // as attributes. popup is, but limited to /[A-Za-z0-9_=,]/
                    nodeAttrs.onclick = 'window.open(this.href.baseVal,this.target.baseVal,"' +
                        popup + '");return false;';
                }
            }
        }
        else nodeType = 'tspan';

        if(nodeSpec.style) nodeAttrs.style = nodeSpec.style;

        var newNode = document.createElementNS(xmlnsNamespaces.svg, nodeType);

        if(type === 'sup' || type === 'sub') {
            addTextNode(currentNode, ZERO_WIDTH_SPACE);
            currentNode.appendChild(newNode);

            var resetter = document.createElementNS(xmlnsNamespaces.svg, 'tspan');
            addTextNode(resetter, ZERO_WIDTH_SPACE);
            d3.select(resetter).attr('dy', RESET_DY[type]);
            nodeAttrs.dy = SHIFT_DY[type];

            currentNode.appendChild(newNode);
            currentNode.appendChild(resetter);
        }
        else {
            currentNode.appendChild(newNode);
        }

        d3.select(newNode).attr(nodeAttrs);

        currentNode = nodeSpec.node = newNode;
        nodeStack.push(nodeSpec);
    }

    function addTextNode(node, text) {
        node.appendChild(document.createTextNode(text));
    }

    function exitNode(type) {
        // A bare closing tag can't close the root node. If we encounter this it
        // means there's an extra closing tag that can just be ignored:
        if(nodeStack.length === 1) {
            Lib.log('Ignoring unexpected end tag </' + type + '>.', str);
            return;
        }

        var innerNode = nodeStack.pop();

        if(type !== innerNode.type) {
            Lib.log('Start tag <' + innerNode.type + '> doesnt match end tag <' +
                type + '>. Pretending it did match.', str);
        }
        currentNode = nodeStack[nodeStack.length - 1].node;
    }

    var hasLines = BR_TAG.test(str);

    if(hasLines) newLine();
    else {
        currentNode = containerNode;
        nodeStack = [{node: containerNode}];
    }

    var parts = str.split(SPLIT_TAGS);
    for(var i = 0; i < parts.length; i++) {
        var parti = parts[i];
        var match = parti.match(ONE_TAG);
        var tagType = match && match[2].toLowerCase();
        var tagStyle = TAG_STYLES[tagType];

        if(tagType === 'br') {
            newLine();
        }
        else if(tagStyle === undefined) {
            addTextNode(currentNode, parti);
        }
        else {
            // tag - open or close
            if(match[1]) {
                exitNode(tagType);
            }
            else {
                var extra = match[4];

                var nodeSpec = {type: tagType};

                // now add style, from both the tag name and any extra css
                // Most of the svg css that users will care about is just like html,
                // but font color is different (uses fill). Let our users ignore this.
                var css = getQuotedMatch(extra, STYLEMATCH);
                if(css) {
                    css = css.replace(COLORMATCH, '$1 fill:');
                    if(tagStyle) css += ';' + tagStyle;
                }
                else if(tagStyle) css = tagStyle;

                if(css) nodeSpec.style = css;

                if(tagType === 'a') {
                    hasLink = true;

                    var href = getQuotedMatch(extra, HREFMATCH);

                    if(href) {
                        // check safe protocols
                        var dummyAnchor = document.createElement('a');
                        dummyAnchor.href = href;
                        if(PROTOCOLS.indexOf(dummyAnchor.protocol) !== -1) {
                            nodeSpec.href = encodeURI(href);
                            nodeSpec.target = getQuotedMatch(extra, TARGETMATCH) || '_blank';
                            nodeSpec.popup = getQuotedMatch(extra, POPUPMATCH);
                        }
                    }
                }

                enterNode(nodeSpec);
            }
        }
    }

    return hasLink;
}

exports.lineCount = function lineCount(s) {
    return s.selectAll('tspan.line').size() || 1;
};

exports.positionText = function positionText(s, x, y) {
    return s.each(function() {
        var text = d3.select(this);

        function setOrGet(attr, val) {
            if(val === undefined) {
                val = text.attr(attr);
                if(val === null) {
                    text.attr(attr, 0);
                    val = 0;
                }
            }
            else text.attr(attr, val);
            return val;
        }

        var thisX = setOrGet('x', x);
        var thisY = setOrGet('y', y);

        if(this.nodeName === 'text') {
            text.selectAll('tspan.line').attr({x: thisX, y: thisY});
        }
    });
};

function alignHTMLWith(_base, container, options) {
    var alignH = options.horizontalAlign,
        alignV = options.verticalAlign || 'top',
        bRect = _base.node().getBoundingClientRect(),
        cRect = container.node().getBoundingClientRect(),
        thisRect,
        getTop,
        getLeft;

    if(alignV === 'bottom') {
        getTop = function() { return bRect.bottom - thisRect.height; };
    } else if(alignV === 'middle') {
        getTop = function() { return bRect.top + (bRect.height - thisRect.height) / 2; };
    } else { // default: top
        getTop = function() { return bRect.top; };
    }

    if(alignH === 'right') {
        getLeft = function() { return bRect.right - thisRect.width; };
    } else if(alignH === 'center') {
        getLeft = function() { return bRect.left + (bRect.width - thisRect.width) / 2; };
    } else { // default: left
        getLeft = function() { return bRect.left; };
    }

    return function() {
        thisRect = this.node().getBoundingClientRect();
        this.style({
            top: (getTop() - cRect.top) + 'px',
            left: (getLeft() - cRect.left) + 'px',
            'z-index': 1000
        });
        return this;
    };
}

/*
 * Editable title
 * @param {d3.selection} context: the element being edited. Normally text,
 *   but if it isn't, you should provide the styling options
 * @param {object} options:
 *   @param {div} options.gd: graphDiv
 *   @param {d3.selection} options.delegate: item to bind events to if not this
 *   @param {boolean} options.immediate: start editing now (true) or on click (false, default)
 *   @param {string} options.fill: font color if not as shown
 *   @param {string} options.background: background color if not as shown
 *   @param {string} options.text: initial text, if not as shown
 *   @param {string} options.horizontalAlign: alignment of the edit box wrt. the bound element
 *   @param {string} options.verticalAlign: alignment of the edit box wrt. the bound element
 */

exports.makeEditable = function(context, options) {
    var gd = options.gd;
    var _delegate = options.delegate;
    var dispatch = d3.dispatch('edit', 'input', 'cancel');
    var handlerElement = _delegate || context;

    context.style({'pointer-events': _delegate ? 'none' : 'all'});

    if(context.size() !== 1) throw new Error('boo');

    function handleClick() {
        appendEditable();
        context.style({opacity: 0});
        // also hide any mathjax svg
        var svgClass = handlerElement.attr('class'),
            mathjaxClass;
        if(svgClass) mathjaxClass = '.' + svgClass.split(' ')[0] + '-math-group';
        else mathjaxClass = '[class*=-math-group]';
        if(mathjaxClass) {
            d3.select(context.node().parentNode).select(mathjaxClass).style({opacity: 0});
        }
    }

    function selectElementContents(_el) {
        var el = _el.node();
        var range = document.createRange();
        range.selectNodeContents(el);
        var sel = window.getSelection();
        sel.removeAllRanges();
        sel.addRange(range);
        el.focus();
    }

    function appendEditable() {
        var plotDiv = d3.select(gd);
        var container = plotDiv.select('.svg-container');
        var div = container.append('div');
        var cStyle = context.node().style;
        var fontSize = parseFloat(cStyle.fontSize || 12);

        div.classed('plugin-editable editable', true)
            .style({
                position: 'absolute',
                'font-family': cStyle.fontFamily || 'Arial',
                'font-size': fontSize,
                color: options.fill || cStyle.fill || 'black',
                opacity: 1,
                'background-color': options.background || 'transparent',
                outline: '#ffffff33 1px solid',
                margin: [-fontSize / 8 + 1, 0, 0, -1].join('px ') + 'px',
                padding: '0',
                'box-sizing': 'border-box'
            })
            .attr({contenteditable: true})
            .text(options.text || context.attr('data-unformatted'))
            .call(alignHTMLWith(context, container, options))
            .on('blur', function() {
                gd._editing = false;
                context.text(this.textContent)
                    .style({opacity: 1});
                var svgClass = d3.select(this).attr('class'),
                    mathjaxClass;
                if(svgClass) mathjaxClass = '.' + svgClass.split(' ')[0] + '-math-group';
                else mathjaxClass = '[class*=-math-group]';
                if(mathjaxClass) {
                    d3.select(context.node().parentNode).select(mathjaxClass).style({opacity: 0});
                }
                var text = this.textContent;
                d3.select(this).transition().duration(0).remove();
                d3.select(document).on('mouseup', null);
                dispatch.edit.call(context, text);
            })
            .on('focus', function() {
                var editDiv = this;
                gd._editing = true;
                d3.select(document).on('mouseup', function() {
                    if(d3.event.target === editDiv) return false;
                    if(document.activeElement === div.node()) div.node().blur();
                });
            })
            .on('keyup', function() {
                if(d3.event.which === 27) {
                    gd._editing = false;
                    context.style({opacity: 1});
                    d3.select(this)
                        .style({opacity: 0})
                        .on('blur', function() { return false; })
                        .transition().remove();
                    dispatch.cancel.call(context, this.textContent);
                }
                else {
                    dispatch.input.call(context, this.textContent);
                    d3.select(this).call(alignHTMLWith(context, container, options));
                }
            })
            .on('keydown', function() {
                if(d3.event.which === 13) this.blur();
            })
            .call(selectElementContents);
    }

    if(options.immediate) handleClick();
    else handlerElement.on('click', handleClick);

    return d3.rebind(context, dispatch, 'on');
};

},{"../constants/alignment":330,"../constants/string_mappings":335,"../constants/xmlns_namespaces":336,"../lib":353,"d3":62}],376:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var timerCache = {};

/**
 * Throttle a callback. `callback` executes synchronously only if
 * more than `minInterval` milliseconds have already elapsed since the latest
 * call (if any). Otherwise we wait until `minInterval` is over and execute the
 * last callback received while waiting.
 * So the first and last events in a train are always executed (eventually)
 * but some of the events in the middle can be dropped.
 *
 * @param {string} id: an identifier to mark events to throttle together
 * @param {number} minInterval: minimum time, in milliseconds, between
 *   invocations of `callback`
 * @param {function} callback: the function to throttle. `callback` itself
 *   should be a purely synchronous function.
 */
exports.throttle = function throttle(id, minInterval, callback) {
    var cache = timerCache[id];
    var now = Date.now();

    if(!cache) {
        /*
         * Throw out old items before making a new one, to prevent the cache
         * getting overgrown, for example from old plots that have been replaced.
         * 1 minute age is arbitrary.
         */
        for(var idi in timerCache) {
            if(timerCache[idi].ts < now - 60000) {
                delete timerCache[idi];
            }
        }
        cache = timerCache[id] = {ts: 0, timer: null};
    }

    _clearTimeout(cache);

    function exec() {
        callback();
        cache.ts = Date.now();
        if(cache.onDone) {
            cache.onDone();
            cache.onDone = null;
        }
    }

    if(now > cache.ts + minInterval) {
        exec();
        return;
    }

    cache.timer = setTimeout(function() {
        exec();
        cache.timer = null;
    }, minInterval);
};

exports.done = function(id) {
    var cache = timerCache[id];
    if(!cache || !cache.timer) return Promise.resolve();

    return new Promise(function(resolve) {
        var previousOnDone = cache.onDone;
        cache.onDone = function onDone() {
            if(previousOnDone) previousOnDone();
            resolve();
            cache.onDone = null;
        };
    });
};

/**
 * Clear the throttle cache for one or all timers
 * @param {optional string} id:
 *   if provided, clear just this timer
 *   if omitted, clear all timers (mainly useful for testing)
 */
exports.clear = function(id) {
    if(id) {
        _clearTimeout(timerCache[id]);
        delete timerCache[id];
    }
    else {
        for(var idi in timerCache) exports.clear(idi);
    }
};

function _clearTimeout(cache) {
    if(cache && cache.timer !== null) {
        clearTimeout(cache.timer);
        cache.timer = null;
    }
}

},{}],377:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

/**
 * convert a linear value into a logged value, folding negative numbers into
 * the given range
 */
module.exports = function toLogRange(val, range) {
    if(val > 0) return Math.log(val) / Math.LN10;

    // move a negative value reference to a log axis - just put the
    // result at the lowest range value on the plot (or if the range also went negative,
    // one millionth of the top of the range)
    var newVal = Math.log(Math.min(range[0], range[1])) / Math.LN10;
    if(!isNumeric(newVal)) newVal = Math.log(Math.max(range[0], range[1])) / Math.LN10 - 6;
    return newVal;
};

},{"fast-isnumeric":68}],378:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

function truncateFloat32(arrayIn, len) {
    var arrayOut = new Float32Array(len);
    for(var i = 0; i < len; i++) arrayOut[i] = arrayIn[i];
    return arrayOut;
}

function truncateFloat64(arrayIn, len) {
    var arrayOut = new Float64Array(len);
    for(var i = 0; i < len; i++) arrayOut[i] = arrayIn[i];
    return arrayOut;
}

/**
 * Truncate a typed array to some length.
 * For some reason, ES2015 Float32Array.prototype.slice takes
 * 2x as long, therefore we aren't checking for its existence
 */
module.exports = function truncate(arrayIn, len) {
    if(arrayIn instanceof Float32Array) return truncateFloat32(arrayIn, len);
    if(arrayIn instanceof Float64Array) return truncateFloat64(arrayIn, len);
    throw new Error('This array type is not yet supported by `truncate`.');
};

},{}],379:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../registry');

/*
 * containerArrayMatch: does this attribute string point into a
 * layout container array?
 *
 * @param {String} astr: an attribute string, like *annotations[2].text*
 *
 * @returns {Object | false} Returns false if `astr` doesn't match a container
 *  array. If it does, returns:
 *     {array: {String}, index: {Number}, property: {String}}
 *  ie the attribute string for the array, the index within the array (or ''
 *  if the whole array) and the property within that (or '' if the whole array
 *  or the whole object)
 */
module.exports = function containerArrayMatch(astr) {
    var rootContainers = Registry.layoutArrayContainers,
        regexpContainers = Registry.layoutArrayRegexes,
        rootPart = astr.split('[')[0],
        arrayStr,
        match;

    // look for regexp matches first, because they may be nested inside root matches
    // eg updatemenus[i].buttons is nested inside updatemenus
    for(var i = 0; i < regexpContainers.length; i++) {
        match = astr.match(regexpContainers[i]);
        if(match && match.index === 0) {
            arrayStr = match[0];
            break;
        }
    }

    // now look for root matches
    if(!arrayStr) arrayStr = rootContainers[rootContainers.indexOf(rootPart)];

    if(!arrayStr) return false;

    var tail = astr.substr(arrayStr.length);
    if(!tail) return {array: arrayStr, index: '', property: ''};

    match = tail.match(/^\[(0|[1-9][0-9]*)\](\.(.+))?$/);
    if(!match) return false;

    return {array: arrayStr, index: Number(match[1]), property: match[3] || ''};
};

},{"../registry":436}],380:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');
var extendFlat = Lib.extendFlat;
var isPlainObject = Lib.isPlainObject;

var traceOpts = {
    valType: 'flaglist',
    extras: ['none'],
    flags: ['calc', 'calcIfAutorange', 'clearAxisTypes', 'plot', 'style', 'colorbars'],
    
};

var layoutOpts = {
    valType: 'flaglist',
    extras: ['none'],
    flags: [
        'calc', 'calcIfAutorange', 'plot', 'legend', 'ticks',
        'layoutstyle', 'modebar', 'camera', 'arraydraw'
    ],
    
};

// flags for inside restyle/relayout include a few extras
// that shouldn't be used in attributes, to deal with certain
// combinations and conditionals efficiently
var traceEditTypeFlags = traceOpts.flags.slice()
    .concat(['clearCalc', 'fullReplot']);

var layoutEditTypeFlags = layoutOpts.flags.slice()
    .concat('layoutReplot');

module.exports = {
    traces: traceOpts,
    layout: layoutOpts,
    /*
     * default (all false) edit flags for restyle (traces)
     * creates a new object each call, so the caller can mutate freely
     */
    traceFlags: function() { return falseObj(traceEditTypeFlags); },

    /*
     * default (all false) edit flags for relayout
     * creates a new object each call, so the caller can mutate freely
     */
    layoutFlags: function() { return falseObj(layoutEditTypeFlags); },

    /*
     * update `flags` with the `editType` values found in `attr`
     */
    update: function(flags, attr) {
        var editType = attr.editType;
        if(editType && editType !== 'none') {
            var editTypeParts = editType.split('+');
            for(var i = 0; i < editTypeParts.length; i++) {
                flags[editTypeParts[i]] = true;
            }
        }
    },

    overrideAll: overrideAll
};

function falseObj(keys) {
    var out = {};
    for(var i = 0; i < keys.length; i++) out[keys[i]] = false;
    return out;
}

/**
 * For attributes that are largely copied from elsewhere into a plot type that doesn't
 * support partial redraws - overrides the editType field of all attributes in the object
 *
 * @param {object} attrs: the attributes to override. Will not be mutated.
 * @param {string} editTypeOverride: the new editType to use
 * @param {'nested'|'from-root'} overrideContainers:
 *   - 'nested' will override editType for nested containers but not the root.
 *   - 'from-root' will also override editType of the root container.
 *   Containers below the absolute top level (trace or layout root) DO need an
 *   editType even if they are not `valObject`s themselves (eg `scatter.marker`)
 *   to handle the case where you edit the whole container.
 *
 * @return {object} a new attributes object with `editType` modified as directed
 */
function overrideAll(attrs, editTypeOverride, overrideContainers) {
    var out = extendFlat({}, attrs);
    for(var key in out) {
        var attr = out[key];
        if(isPlainObject(attr)) {
            out[key] = overrideOne(attr, editTypeOverride, overrideContainers, key);
        }
    }
    if(overrideContainers === 'from-root') out.editType = editTypeOverride;

    return out;
}

function overrideOne(attr, editTypeOverride, overrideContainers, key) {
    if(attr.valType) {
        var out = extendFlat({}, attr);
        out.editType = editTypeOverride;

        if(Array.isArray(attr.items)) {
            out.items = new Array(attr.items.length);
            for(var i = 0; i < attr.items.length; i++) {
                out.items[i] = overrideOne(attr.items[i], editTypeOverride, 'from-root');
            }
        }
        return out;
    }
    else {
        // don't provide an editType for the _deprecated container
        return overrideAll(attr, editTypeOverride,
            (key.charAt(0) === '_') ? 'nested' : 'from-root');
    }
}

},{"../lib":353}],381:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var m4FromQuat = require('gl-mat4/fromQuat');

var Registry = require('../registry');
var Lib = require('../lib');
var Plots = require('../plots/plots');
var Axes = require('../plots/cartesian/axes');
var Color = require('../components/color');


// clear the promise queue if one of them got rejected
exports.clearPromiseQueue = function(gd) {
    if(Array.isArray(gd._promises) && gd._promises.length > 0) {
        Lib.log('Clearing previous rejected promises from queue.');
    }

    gd._promises = [];
};

// make a few changes to the layout right away
// before it gets used for anything
// backward compatibility and cleanup of nonstandard options
exports.cleanLayout = function(layout) {
    var i, j;

    if(!layout) layout = {};

    // cannot have (x|y)axis1, numbering goes axis, axis2, axis3...
    if(layout.xaxis1) {
        if(!layout.xaxis) layout.xaxis = layout.xaxis1;
        delete layout.xaxis1;
    }
    if(layout.yaxis1) {
        if(!layout.yaxis) layout.yaxis = layout.yaxis1;
        delete layout.yaxis1;
    }

    var axList = Axes.list({_fullLayout: layout});
    for(i = 0; i < axList.length; i++) {
        var ax = axList[i];
        if(ax.anchor && ax.anchor !== 'free') {
            ax.anchor = Axes.cleanId(ax.anchor);
        }
        if(ax.overlaying) ax.overlaying = Axes.cleanId(ax.overlaying);

        // old method of axis type - isdate and islog (before category existed)
        if(!ax.type) {
            if(ax.isdate) ax.type = 'date';
            else if(ax.islog) ax.type = 'log';
            else if(ax.isdate === false && ax.islog === false) ax.type = 'linear';
        }
        if(ax.autorange === 'withzero' || ax.autorange === 'tozero') {
            ax.autorange = true;
            ax.rangemode = 'tozero';
        }
        delete ax.islog;
        delete ax.isdate;
        delete ax.categories; // replaced by _categories

        // prune empty domain arrays made before the new nestedProperty
        if(emptyContainer(ax, 'domain')) delete ax.domain;

        // autotick -> tickmode
        if(ax.autotick !== undefined) {
            if(ax.tickmode === undefined) {
                ax.tickmode = ax.autotick ? 'auto' : 'linear';
            }
            delete ax.autotick;
        }
    }

    var annotationsLen = Array.isArray(layout.annotations) ? layout.annotations.length : 0;
    for(i = 0; i < annotationsLen; i++) {
        var ann = layout.annotations[i];

        if(!Lib.isPlainObject(ann)) continue;

        if(ann.ref) {
            if(ann.ref === 'paper') {
                ann.xref = 'paper';
                ann.yref = 'paper';
            }
            else if(ann.ref === 'data') {
                ann.xref = 'x';
                ann.yref = 'y';
            }
            delete ann.ref;
        }

        cleanAxRef(ann, 'xref');
        cleanAxRef(ann, 'yref');
    }

    var shapesLen = Array.isArray(layout.shapes) ? layout.shapes.length : 0;
    for(i = 0; i < shapesLen; i++) {
        var shape = layout.shapes[i];

        if(!Lib.isPlainObject(shape)) continue;

        cleanAxRef(shape, 'xref');
        cleanAxRef(shape, 'yref');
    }

    var legend = layout.legend;
    if(legend) {
        // check for old-style legend positioning (x or y is +/- 100)
        if(legend.x > 3) {
            legend.x = 1.02;
            legend.xanchor = 'left';
        }
        else if(legend.x < -2) {
            legend.x = -0.02;
            legend.xanchor = 'right';
        }

        if(legend.y > 3) {
            legend.y = 1.02;
            legend.yanchor = 'bottom';
        }
        else if(legend.y < -2) {
            legend.y = -0.02;
            legend.yanchor = 'top';
        }
    }

    /*
     * Moved from rotate -> orbit for dragmode
     */
    if(layout.dragmode === 'rotate') layout.dragmode = 'orbit';

    // cannot have scene1, numbering goes scene, scene2, scene3...
    if(layout.scene1) {
        if(!layout.scene) layout.scene = layout.scene1;
        delete layout.scene1;
    }

    /*
     * Clean up Scene layouts
     */
    var sceneIds = Plots.getSubplotIds(layout, 'gl3d');
    for(i = 0; i < sceneIds.length; i++) {
        var scene = layout[sceneIds[i]];

        // clean old Camera coords
        var cameraposition = scene.cameraposition;
        if(Array.isArray(cameraposition) && cameraposition[0].length === 4) {
            var rotation = cameraposition[0],
                center = cameraposition[1],
                radius = cameraposition[2],
                mat = m4FromQuat([], rotation),
                eye = [];

            for(j = 0; j < 3; ++j) {
                eye[j] = center[i] + radius * mat[2 + 4 * j];
            }

            scene.camera = {
                eye: {x: eye[0], y: eye[1], z: eye[2]},
                center: {x: center[0], y: center[1], z: center[2]},
                up: {x: mat[1], y: mat[5], z: mat[9]}
            };

            delete scene.cameraposition;
        }
    }

    // sanitize rgb(fractions) and rgba(fractions) that old tinycolor
    // supported, but new tinycolor does not because they're not valid css
    Color.clean(layout);

    return layout;
};

function cleanAxRef(container, attr) {
    var valIn = container[attr],
        axLetter = attr.charAt(0);
    if(valIn && valIn !== 'paper') {
        container[attr] = Axes.cleanId(valIn, axLetter);
    }
}

// Make a few changes to the data right away
// before it gets used for anything
exports.cleanData = function(data, existingData) {
    // Enforce unique IDs
    var suids = [], // seen uids --- so we can weed out incoming repeats
        uids = data.concat(Array.isArray(existingData) ? existingData : [])
               .filter(function(trace) { return 'uid' in trace; })
               .map(function(trace) { return trace.uid; });

    for(var tracei = 0; tracei < data.length; tracei++) {
        var trace = data[tracei];
        var i;

        // assign uids to each trace and detect collisions.
        if(!('uid' in trace) || suids.indexOf(trace.uid) !== -1) {
            var newUid;

            for(i = 0; i < 100; i++) {
                newUid = Lib.randstr(uids);
                if(suids.indexOf(newUid) === -1) break;
            }
            trace.uid = Lib.randstr(uids);
            uids.push(trace.uid);
        }
        // keep track of already seen uids, so that if there are
        // doubles we force the trace with a repeat uid to
        // acquire a new one
        suids.push(trace.uid);

        // BACKWARD COMPATIBILITY FIXES

        // use xbins to bin data in x, and ybins to bin data in y
        if(trace.type === 'histogramy' && 'xbins' in trace && !('ybins' in trace)) {
            trace.ybins = trace.xbins;
            delete trace.xbins;
        }

        // error_y.opacity is obsolete - merge into color
        if(trace.error_y && 'opacity' in trace.error_y) {
            var dc = Color.defaults,
                yeColor = trace.error_y.color ||
                (Registry.traceIs(trace, 'bar') ? Color.defaultLine : dc[tracei % dc.length]);
            trace.error_y.color = Color.addOpacity(
                Color.rgb(yeColor),
                Color.opacity(yeColor) * trace.error_y.opacity);
            delete trace.error_y.opacity;
        }

        // convert bardir to orientation, and put the data into
        // the axes it's eventually going to be used with
        if('bardir' in trace) {
            if(trace.bardir === 'h' && (Registry.traceIs(trace, 'bar') ||
                     trace.type.substr(0, 9) === 'histogram')) {
                trace.orientation = 'h';
                exports.swapXYData(trace);
            }
            delete trace.bardir;
        }

        // now we have only one 1D histogram type, and whether
        // it uses x or y data depends on trace.orientation
        if(trace.type === 'histogramy') exports.swapXYData(trace);
        if(trace.type === 'histogramx' || trace.type === 'histogramy') {
            trace.type = 'histogram';
        }

        // scl->scale, reversescl->reversescale
        if('scl' in trace) {
            trace.colorscale = trace.scl;
            delete trace.scl;
        }
        if('reversescl' in trace) {
            trace.reversescale = trace.reversescl;
            delete trace.reversescl;
        }

        // axis ids x1 -> x, y1-> y
        if(trace.xaxis) trace.xaxis = Axes.cleanId(trace.xaxis, 'x');
        if(trace.yaxis) trace.yaxis = Axes.cleanId(trace.yaxis, 'y');

        // scene ids scene1 -> scene
        if(Registry.traceIs(trace, 'gl3d') && trace.scene) {
            trace.scene = Plots.subplotsRegistry.gl3d.cleanId(trace.scene);
        }

        if(!Registry.traceIs(trace, 'pie') && !Registry.traceIs(trace, 'bar')) {
            if(Array.isArray(trace.textposition)) {
                trace.textposition = trace.textposition.map(cleanTextPosition);
            }
            else if(trace.textposition) {
                trace.textposition = cleanTextPosition(trace.textposition);
            }
        }

        // fix typo in colorscale definition
        if(Registry.traceIs(trace, '2dMap')) {
            if(trace.colorscale === 'YIGnBu') trace.colorscale = 'YlGnBu';
            if(trace.colorscale === 'YIOrRd') trace.colorscale = 'YlOrRd';
        }
        if(Registry.traceIs(trace, 'markerColorscale') && trace.marker) {
            var cont = trace.marker;
            if(cont.colorscale === 'YIGnBu') cont.colorscale = 'YlGnBu';
            if(cont.colorscale === 'YIOrRd') cont.colorscale = 'YlOrRd';
        }

        // fix typo in surface 'highlight*' definitions
        if(trace.type === 'surface' && Lib.isPlainObject(trace.contours)) {
            var dims = ['x', 'y', 'z'];

            for(i = 0; i < dims.length; i++) {
                var opts = trace.contours[dims[i]];

                if(!Lib.isPlainObject(opts)) continue;

                if(opts.highlightColor) {
                    opts.highlightcolor = opts.highlightColor;
                    delete opts.highlightColor;
                }

                if(opts.highlightWidth) {
                    opts.highlightwidth = opts.highlightWidth;
                    delete opts.highlightWidth;
                }
            }
        }

        // transforms backward compatibility fixes
        if(Array.isArray(trace.transforms)) {
            var transforms = trace.transforms;

            for(i = 0; i < transforms.length; i++) {
                var transform = transforms[i];

                if(!Lib.isPlainObject(transform)) continue;

                switch(transform.type) {
                    case 'filter':
                        if(transform.filtersrc) {
                            transform.target = transform.filtersrc;
                            delete transform.filtersrc;
                        }

                        if(transform.calendar) {
                            if(!transform.valuecalendar) {
                                transform.valuecalendar = transform.calendar;
                            }
                            delete transform.calendar;
                        }
                        break;

                    case 'groupby':
                        // Name has changed from `style` to `styles`, so use `style` but prefer `styles`:
                        transform.styles = transform.styles || transform.style;

                        if(transform.styles && !Array.isArray(transform.styles)) {
                            var prevStyles = transform.styles;
                            var styleKeys = Object.keys(prevStyles);

                            transform.styles = [];
                            for(var j = 0; j < styleKeys.length; j++) {
                                transform.styles.push({
                                    target: styleKeys[j],
                                    value: prevStyles[styleKeys[j]]
                                });
                            }
                        }
                        break;
                }
            }
        }

        // prune empty containers made before the new nestedProperty
        if(emptyContainer(trace, 'line')) delete trace.line;
        if('marker' in trace) {
            if(emptyContainer(trace.marker, 'line')) delete trace.marker.line;
            if(emptyContainer(trace, 'marker')) delete trace.marker;
        }

        // sanitize rgb(fractions) and rgba(fractions) that old tinycolor
        // supported, but new tinycolor does not because they're not valid css
        Color.clean(trace);
    }
};

// textposition - support partial attributes (ie just 'top')
// and incorrect use of middle / center etc.
function cleanTextPosition(textposition) {
    var posY = 'middle',
        posX = 'center';
    if(textposition.indexOf('top') !== -1) posY = 'top';
    else if(textposition.indexOf('bottom') !== -1) posY = 'bottom';

    if(textposition.indexOf('left') !== -1) posX = 'left';
    else if(textposition.indexOf('right') !== -1) posX = 'right';

    return posY + ' ' + posX;
}

function emptyContainer(outer, innerStr) {
    return (innerStr in outer) &&
        (typeof outer[innerStr] === 'object') &&
        (Object.keys(outer[innerStr]).length === 0);
}


// swap all the data and data attributes associated with x and y
exports.swapXYData = function(trace) {
    var i;
    Lib.swapAttrs(trace, ['?', '?0', 'd?', '?bins', 'nbins?', 'autobin?', '?src', 'error_?']);
    if(Array.isArray(trace.z) && Array.isArray(trace.z[0])) {
        if(trace.transpose) delete trace.transpose;
        else trace.transpose = true;
    }
    if(trace.error_x && trace.error_y) {
        var errorY = trace.error_y,
            copyYstyle = ('copy_ystyle' in errorY) ? errorY.copy_ystyle :
                !(errorY.color || errorY.thickness || errorY.width);
        Lib.swapAttrs(trace, ['error_?.copy_ystyle']);
        if(copyYstyle) {
            Lib.swapAttrs(trace, ['error_?.color', 'error_?.thickness', 'error_?.width']);
        }
    }
    if(typeof trace.hoverinfo === 'string') {
        var hoverInfoParts = trace.hoverinfo.split('+');
        for(i = 0; i < hoverInfoParts.length; i++) {
            if(hoverInfoParts[i] === 'x') hoverInfoParts[i] = 'y';
            else if(hoverInfoParts[i] === 'y') hoverInfoParts[i] = 'x';
        }
        trace.hoverinfo = hoverInfoParts.join('+');
    }
};

// coerce traceIndices input to array of trace indices
exports.coerceTraceIndices = function(gd, traceIndices) {
    if(isNumeric(traceIndices)) {
        return [traceIndices];
    }
    else if(!Array.isArray(traceIndices) || !traceIndices.length) {
        return gd.data.map(function(_, i) { return i; });
    }

    return traceIndices;
};

/**
 * Manages logic around array container item creation / deletion / update
 * that nested property alone can't handle.
 *
 * @param {Object} np
 *  nested property of update attribute string about trace or layout object
 * @param {*} newVal
 *  update value passed to restyle / relayout / update
 * @param {Object} undoit
 *  undo hash (N.B. undoit may be mutated here).
 *
 */
exports.manageArrayContainers = function(np, newVal, undoit) {
    var obj = np.obj,
        parts = np.parts,
        pLength = parts.length,
        pLast = parts[pLength - 1];

    var pLastIsNumber = isNumeric(pLast);

    // delete item
    if(pLastIsNumber && newVal === null) {

        // Clear item in array container when new value is null
        var contPath = parts.slice(0, pLength - 1).join('.'),
            cont = Lib.nestedProperty(obj, contPath).get();
        cont.splice(pLast, 1);

        // Note that nested property clears null / undefined at end of
        // array container, but not within them.
    }
    // create item
    else if(pLastIsNumber && np.get() === undefined) {

        // When adding a new item, make sure undo command will remove it
        if(np.get() === undefined) undoit[np.astr] = null;

        np.set(newVal);
    }
    // update item
    else {

        // If the last part of attribute string isn't a number,
        // np.set is all we need.
        np.set(newVal);
    }
};

/*
 * Match the part to strip off to turn an attribute into its parent
 * really it should be either '.some_characters' or '[number]'
 * but we're a little more permissive here and match either
 * '.not_brackets_or_dot' or '[not_brackets_or_dot]'
 */
var ATTR_TAIL_RE = /(\.[^\[\]\.]+|\[[^\[\]\.]+\])$/;

function getParent(attr) {
    var tail = attr.search(ATTR_TAIL_RE);
    if(tail > 0) return attr.substr(0, tail);
}

/*
 * hasParent: does an attribute object contain a parent of the given attribute?
 * for example, given 'images[2].x' do we also have 'images' or 'images[2]'?
 *
 * @param {Object} aobj
 *  update object, whose keys are attribute strings and values are their new settings
 * @param {string} attr
 *  the attribute string to test against
 * @returns {Boolean}
 *  is a parent of attr present in aobj?
 */
exports.hasParent = function(aobj, attr) {
    var attrParent = getParent(attr);
    while(attrParent) {
        if(attrParent in aobj) return true;
        attrParent = getParent(attrParent);
    }
    return false;
};

/**
 * Empty out types for all axes containing these traces so we auto-set them again
 *
 * @param {object} gd
 * @param {[integer]} traces: trace indices to search for axes to clear the types of
 * @param {object} layoutUpdate: any update being done concurrently to the layout,
 *   which may supercede clearing the axis types
 */
var axLetters = ['x', 'y', 'z'];
exports.clearAxisTypes = function(gd, traces, layoutUpdate) {
    for(var i = 0; i < traces.length; i++) {
        var trace = gd._fullData[i];
        for(var j = 0; j < 3; j++) {
            var ax = Axes.getFromTrace(gd, trace, axLetters[j]);

            // do not clear log type - that's never an auto result so must have been intentional
            if(ax && ax.type !== 'log') {
                var axAttr = ax._name;
                var sceneName = ax._id.substr(1);
                if(sceneName.substr(0, 5) === 'scene') {
                    if(layoutUpdate[sceneName] !== undefined) continue;
                    axAttr = sceneName + '.' + axAttr;
                }
                var typeAttr = axAttr + '.type';

                if(layoutUpdate[axAttr] === undefined && layoutUpdate[typeAttr] === undefined) {
                    Lib.nestedProperty(gd.layout, typeAttr).set(null);
                }
            }
        }
    }
};

},{"../components/color":233,"../lib":353,"../plots/cartesian/axes":396,"../plots/plots":429,"../registry":436,"fast-isnumeric":68,"gl-mat4/fromQuat":88}],382:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var nestedProperty = require('../lib/nested_property');
var isPlainObject = require('../lib/is_plain_object');
var noop = require('../lib/noop');
var Loggers = require('../lib/loggers');
var sorterAsc = require('../lib/search').sorterAsc;
var Registry = require('../registry');


exports.containerArrayMatch = require('./container_array_match');

var isAddVal = exports.isAddVal = function isAddVal(val) {
    return val === 'add' || isPlainObject(val);
};

var isRemoveVal = exports.isRemoveVal = function isRemoveVal(val) {
    return val === null || val === 'remove';
};

/*
 * applyContainerArrayChanges: for managing arrays of layout components in relayout
 * handles them all with a consistent interface.
 *
 * Here are the supported actions -> relayout calls -> edits we get here
 * (as prepared in _relayout):
 *
 * add an empty obj -> {'annotations[2]': 'add'} -> {2: {'': 'add'}}
 * add a specific obj -> {'annotations[2]': {attrs}} -> {2: {'': {attrs}}}
 * delete an obj -> {'annotations[2]': 'remove'} -> {2: {'': 'remove'}}
 *               -> {'annotations[2]': null} -> {2: {'': null}}
 * delete the whole array -> {'annotations': 'remove'} -> {'': {'': 'remove'}}
 *                        -> {'annotations': null} -> {'': {'': null}}
 * edit an object -> {'annotations[2].text': 'boo'} -> {2: {'text': 'boo'}}
 *
 * You can combine many edits to different objects. Objects are added and edited
 * in ascending order, then removed in descending order.
 * For example, starting with [a, b, c], if you want to:
 * - replace b with d:
 *   {'annotations[1]': d, 'annotations[2]': null} (b is item 2 after adding d)
 * - add a new item d between a and b, and edit b:
 *    {'annotations[1]': d, 'annotations[2].x': newX} (b is item 2 after adding d)
 * - delete b and edit c:
 *    {'annotations[1]': null, 'annotations[2].x': newX} (c is edited before b is removed)
 *
 * You CANNOT combine adding/deleting an item at index `i` with edits to the same index `i`
 * You CANNOT combine replacing/deleting the whole array with anything else (for the same array).
 *
 * @param {HTMLDivElement} gd
 *  the DOM element of the graph container div
 * @param {Lib.nestedProperty} componentType: the array we are editing
 * @param {Object} edits
 *  the changes to make; keys are indices to edit, values are themselves objects:
 *  {attr: newValue} of changes to make to that index (with add/remove behavior
 *  in special values of the empty attr)
 * @param {Object} flags
 *  the flags for which actions we're going to perform to display these (and
 *  any other) changes. If we're already `recalc`ing, we don't need to redraw
 *  individual items
 *
 * @returns {bool} `true` if it managed to complete drawing of the changes
 *  `false` would mean the parent should replot.
 */
exports.applyContainerArrayChanges = function applyContainerArrayChanges(gd, np, edits, flags) {
    var componentType = np.astr,
        supplyComponentDefaults = Registry.getComponentMethod(componentType, 'supplyLayoutDefaults'),
        draw = Registry.getComponentMethod(componentType, 'draw'),
        drawOne = Registry.getComponentMethod(componentType, 'drawOne'),
        replotLater = flags.replot || flags.recalc || (supplyComponentDefaults === noop) ||
            (draw === noop),
        layout = gd.layout,
        fullLayout = gd._fullLayout;

    if(edits['']) {
        if(Object.keys(edits).length > 1) {
            Loggers.warn('Full array edits are incompatible with other edits',
                componentType);
        }

        var fullVal = edits[''][''];

        if(isRemoveVal(fullVal)) np.set(null);
        else if(Array.isArray(fullVal)) np.set(fullVal);
        else {
            Loggers.warn('Unrecognized full array edit value', componentType, fullVal);
            return true;
        }

        if(replotLater) return false;

        supplyComponentDefaults(layout, fullLayout);
        draw(gd);
        return true;
    }

    var componentNums = Object.keys(edits).map(Number).sort(sorterAsc),
        componentArrayIn = np.get(),
        componentArray = componentArrayIn || [],
        // componentArrayFull is used just to keep splices in line between
        // full and input arrays, so private keys can be copied over after
        // redoing supplyDefaults
        // TODO: this assumes componentArray is in gd.layout - which will not be
        // true after we extend this to restyle
        componentArrayFull = nestedProperty(fullLayout, componentType).get();

    var deletes = [],
        firstIndexChange = -1,
        maxIndex = componentArray.length,
        i,
        j,
        componentNum,
        objEdits,
        objKeys,
        objVal,
        adding;

    // first make the add and edit changes
    for(i = 0; i < componentNums.length; i++) {
        componentNum = componentNums[i];
        objEdits = edits[componentNum];
        objKeys = Object.keys(objEdits);
        objVal = objEdits[''],
        adding = isAddVal(objVal);

        if(componentNum < 0 || componentNum > componentArray.length - (adding ? 0 : 1)) {
            Loggers.warn('index out of range', componentType, componentNum);
            continue;
        }

        if(objVal !== undefined) {
            if(objKeys.length > 1) {
                Loggers.warn(
                    'Insertion & removal are incompatible with edits to the same index.',
                    componentType, componentNum);
            }

            if(isRemoveVal(objVal)) {
                deletes.push(componentNum);
            }
            else if(adding) {
                if(objVal === 'add') objVal = {};
                componentArray.splice(componentNum, 0, objVal);
                if(componentArrayFull) componentArrayFull.splice(componentNum, 0, {});
            }
            else {
                Loggers.warn('Unrecognized full object edit value',
                    componentType, componentNum, objVal);
            }

            if(firstIndexChange === -1) firstIndexChange = componentNum;
        }
        else {
            for(j = 0; j < objKeys.length; j++) {
                nestedProperty(componentArray[componentNum], objKeys[j]).set(objEdits[objKeys[j]]);
            }
        }
    }

    // now do deletes
    for(i = deletes.length - 1; i >= 0; i--) {
        componentArray.splice(deletes[i], 1);
        // TODO: this drops private keys that had been stored in componentArrayFull
        // does this have any ill effects?
        if(componentArrayFull) componentArrayFull.splice(deletes[i], 1);
    }

    if(!componentArray.length) np.set(null);
    else if(!componentArrayIn) np.set(componentArray);

    if(replotLater) return false;

    supplyComponentDefaults(layout, fullLayout);

    // finally draw all the components we need to
    // if we added or removed any, redraw all after it
    if(drawOne !== noop) {
        var indicesToDraw;
        if(firstIndexChange === -1) {
            // there's no re-indexing to do, so only redraw components that changed
            indicesToDraw = componentNums;
        }
        else {
            // in case the component array was shortened, we still need do call
            // drawOne on the latter items so they get properly removed
            maxIndex = Math.max(componentArray.length, maxIndex);
            indicesToDraw = [];
            for(i = 0; i < componentNums.length; i++) {
                componentNum = componentNums[i];
                if(componentNum >= firstIndexChange) break;
                indicesToDraw.push(componentNum);
            }
            for(i = firstIndexChange; i < maxIndex; i++) {
                indicesToDraw.push(i);
            }
        }
        for(i = 0; i < indicesToDraw.length; i++) {
            drawOne(gd, indicesToDraw[i]);
        }
    }
    else draw(gd);

    return true;
};

},{"../lib/is_plain_object":355,"../lib/loggers":357,"../lib/nested_property":360,"../lib/noop":361,"../lib/search":370,"../registry":436,"./container_array_match":379}],383:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


var d3 = require('d3');
var isNumeric = require('fast-isnumeric');
var hasHover = require('has-hover');

var Plotly = require('../plotly');
var Lib = require('../lib');
var Events = require('../lib/events');
var Queue = require('../lib/queue');

var Registry = require('../registry');
var PlotSchema = require('./plot_schema');
var Plots = require('../plots/plots');
var Polar = require('../plots/polar');
var initInteractions = require('../plots/cartesian/graph_interact');

var Drawing = require('../components/drawing');
var Color = require('../components/color');
var ErrorBars = require('../components/errorbars');
var xmlnsNamespaces = require('../constants/xmlns_namespaces');
var svgTextUtils = require('../lib/svg_text_utils');

var manageArrays = require('./manage_arrays');
var helpers = require('./helpers');
var subroutines = require('./subroutines');
var editTypes = require('./edit_types');

var cartesianConstants = require('../plots/cartesian/constants');
var axisConstraints = require('../plots/cartesian/constraints');
var enforceAxisConstraints = axisConstraints.enforce;
var cleanAxisConstraints = axisConstraints.clean;
var axisIds = require('../plots/cartesian/axis_ids');


/**
 * Main plot-creation function
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 * @param {array of objects} data
 *      array of traces, containing the data and display information for each trace
 * @param {object} layout
 *      object describing the overall display of the plot,
 *      all the stuff that doesn't pertain to any individual trace
 * @param {object} config
 *      configuration options (see ./plot_config.js for more info)
 *
 */
Plotly.plot = function(gd, data, layout, config) {
    var frames;

    gd = Lib.getGraphDiv(gd);

    // Events.init is idempotent and bails early if gd has already been init'd
    Events.init(gd);

    if(Lib.isPlainObject(data)) {
        var obj = data;
        data = obj.data;
        layout = obj.layout;
        config = obj.config;
        frames = obj.frames;
    }

    var okToPlot = Events.triggerHandler(gd, 'plotly_beforeplot', [data, layout, config]);
    if(okToPlot === false) return Promise.reject();

    // if there's no data or layout, and this isn't yet a plotly plot
    // container, log a warning to help plotly.js users debug
    if(!data && !layout && !Lib.isPlotDiv(gd)) {
        Lib.warn('Calling Plotly.plot as if redrawing ' +
            'but this container doesn\'t yet have a plot.', gd);
    }

    function addFrames() {
        if(frames) {
            return Plotly.addFrames(gd, frames);
        }
    }

    // transfer configuration options to gd until we move over to
    // a more OO like model
    setPlotContext(gd, config);

    if(!layout) layout = {};

    // hook class for plots main container (in case of plotly.js
    // this won't be #embedded-graph or .js-tab-contents)
    d3.select(gd).classed('js-plotly-plot', true);

    // off-screen getBoundingClientRect testing space,
    // in #js-plotly-tester (and stored as Drawing.tester)
    // so we can share cached text across tabs
    Drawing.makeTester();

    // collect promises for any async actions during plotting
    // any part of the plotting code can push to gd._promises, then
    // before we move to the next step, we check that they're all
    // complete, and empty out the promise list again.
    if(!Array.isArray(gd._promises)) gd._promises = [];

    var graphWasEmpty = ((gd.data || []).length === 0 && Array.isArray(data));

    // if there is already data on the graph, append the new data
    // if you only want to redraw, pass a non-array for data
    if(Array.isArray(data)) {
        helpers.cleanData(data, gd.data);

        if(graphWasEmpty) gd.data = data;
        else gd.data.push.apply(gd.data, data);

        // for routines outside graph_obj that want a clean tab
        // (rather than appending to an existing one) gd.empty
        // is used to determine whether to make a new tab
        gd.empty = false;
    }

    if(!gd.layout || graphWasEmpty) gd.layout = helpers.cleanLayout(layout);

    // if the user is trying to drag the axes, allow new data and layout
    // to come in but don't allow a replot.
    if(gd._dragging && !gd._transitioning) {
        // signal to drag handler that after everything else is done
        // we need to replot, because something has changed
        gd._replotPending = true;
        return Promise.reject();
    } else {
        // we're going ahead with a replot now
        gd._replotPending = false;
    }

    Plots.supplyDefaults(gd);

    var fullLayout = gd._fullLayout;

    // Polar plots
    if(data && data[0] && data[0].r) return plotPolar(gd, data, layout);

    // so we don't try to re-call Plotly.plot from inside
    // legend and colorbar, if margins changed
    fullLayout._replotting = true;

    // make or remake the framework if we need to
    if(graphWasEmpty) makePlotFramework(gd);

    // polar need a different framework
    if(gd.framework !== makePlotFramework) {
        gd.framework = makePlotFramework;
        makePlotFramework(gd);
    }

    // clear gradient defs on each .plot call, because we know we'll loop through all traces
    Drawing.initGradients(gd);

    // save initial show spikes once per graph
    if(graphWasEmpty) Plotly.Axes.saveShowSpikeInitial(gd);

    // prepare the data and find the autorange

    // generate calcdata, if we need to
    // to force redoing calcdata, just delete it before calling Plotly.plot
    var recalc = !gd.calcdata || gd.calcdata.length !== (gd._fullData || []).length;
    if(recalc) Plots.doCalcdata(gd);

    // in case it has changed, attach fullData traces to calcdata
    for(var i = 0; i < gd.calcdata.length; i++) {
        gd.calcdata[i][0].trace = gd._fullData[i];
    }

    /*
     * start async-friendly code - now we're actually drawing things
     */

    var oldmargins = JSON.stringify(fullLayout._size);

    // draw framework first so that margin-pushing
    // components can position themselves correctly
    function drawFramework() {
        var basePlotModules = fullLayout._basePlotModules;

        for(var i = 0; i < basePlotModules.length; i++) {
            if(basePlotModules[i].drawFramework) {
                basePlotModules[i].drawFramework(gd);
            }
        }

        return Lib.syncOrAsync([
            subroutines.layoutStyles
        ], gd);
    }

    // draw anything that can affect margins.
    function marginPushers() {
        var calcdata = gd.calcdata;
        var i, cd, trace;

        Registry.getComponentMethod('legend', 'draw')(gd);
        Registry.getComponentMethod('rangeselector', 'draw')(gd);
        Registry.getComponentMethod('sliders', 'draw')(gd);
        Registry.getComponentMethod('updatemenus', 'draw')(gd);

        for(i = 0; i < calcdata.length; i++) {
            cd = calcdata[i];
            trace = cd[0].trace;
            if(trace.visible !== true || !trace._module.colorbar) {
                Plots.autoMargin(gd, 'cb' + trace.uid);
            }
            else trace._module.colorbar(gd, cd);
        }

        Plots.doAutoMargin(gd);
        return Plots.previousPromises(gd);
    }

    // in case the margins changed, draw margin pushers again
    function marginPushersAgain() {
        if(JSON.stringify(fullLayout._size) === oldmargins) return;

        return Lib.syncOrAsync([
            marginPushers,
            subroutines.layoutStyles
        ], gd);
    }

    function positionAndAutorange() {
        if(!recalc) {
            enforceAxisConstraints(gd);
            return;
        }

        var subplots = Plots.getSubplotIds(fullLayout, 'cartesian');
        var modules = fullLayout._modules;
        var setPositionsArray = [];

        // position and range calculations for traces that
        // depend on each other ie bars (stacked or grouped)
        // and boxes (grouped) push each other out of the way

        var subplotInfo, i, j;

        for(j = 0; j < modules.length; j++) {
            Lib.pushUnique(setPositionsArray, modules[j].setPositions);
        }

        if(setPositionsArray.length) {
            for(i = 0; i < subplots.length; i++) {
                subplotInfo = fullLayout._plots[subplots[i]];

                for(j = 0; j < setPositionsArray.length; j++) {
                    setPositionsArray[j](gd, subplotInfo);
                }
            }
        }

        // calc and autorange for errorbars
        ErrorBars.calc(gd);

        // TODO: autosize extra for text markers and images
        // see https://github.com/plotly/plotly.js/issues/1111
        return Lib.syncOrAsync([
            Registry.getComponentMethod('shapes', 'calcAutorange'),
            Registry.getComponentMethod('annotations', 'calcAutorange'),
            doAutoRangeAndConstraints,
            Registry.getComponentMethod('rangeslider', 'calcAutorange')
        ], gd);
    }

    function doAutoRangeAndConstraints() {
        if(gd._transitioning) return;

        var axList = Plotly.Axes.list(gd, '', true);
        for(var i = 0; i < axList.length; i++) {
            var ax = axList[i];
            cleanAxisConstraints(gd, ax);

            Plotly.Axes.doAutoRange(ax);
        }

        enforceAxisConstraints(gd);

        // store initial ranges *after* enforcing constraints, otherwise
        // we will never look like we're at the initial ranges
        if(graphWasEmpty) Plotly.Axes.saveRangeInitial(gd);
    }

    // draw ticks, titles, and calculate axis scaling (._b, ._m)
    function drawAxes() {
        return Plotly.Axes.doTicks(gd, 'redraw');
    }

    // Now plot the data
    function drawData() {
        var calcdata = gd.calcdata,
            i,
            rangesliderContainers = fullLayout._infolayer.selectAll('g.rangeslider-container');

        // in case of traces that were heatmaps or contour maps
        // previously, remove them and their colorbars explicitly
        for(i = 0; i < calcdata.length; i++) {
            var trace = calcdata[i][0].trace,
                isVisible = (trace.visible === true),
                uid = trace.uid;

            if(!isVisible || !Registry.traceIs(trace, '2dMap')) {
                var query = (
                    '.hm' + uid +
                    ',.contour' + uid +
                    ',#clip' + uid
                );

                fullLayout._paper
                    .selectAll(query)
                    .remove();

                rangesliderContainers
                    .selectAll(query)
                    .remove();
            }

            if(!isVisible || !trace._module.colorbar) {
                fullLayout._infolayer.selectAll('.cb' + uid).remove();
            }
        }

        // loop over the base plot modules present on graph
        var basePlotModules = fullLayout._basePlotModules;
        for(i = 0; i < basePlotModules.length; i++) {
            basePlotModules[i].plot(gd);
        }

        // keep reference to shape layers in subplots
        var layerSubplot = fullLayout._paper.selectAll('.layer-subplot');
        fullLayout._shapeSubplotLayers = layerSubplot.selectAll('.shapelayer');

        // styling separate from drawing
        Plots.style(gd);

        // show annotations and shapes
        Registry.getComponentMethod('shapes', 'draw')(gd);
        Registry.getComponentMethod('annotations', 'draw')(gd);

        // source links
        Plots.addLinks(gd);

        // Mark the first render as complete
        fullLayout._replotting = false;

        return Plots.previousPromises(gd);
    }

    // An initial paint must be completed before these components can be
    // correctly sized and the whole plot re-margined. fullLayout._replotting must
    // be set to false before these will work properly.
    function finalDraw() {
        Registry.getComponentMethod('shapes', 'draw')(gd);
        Registry.getComponentMethod('images', 'draw')(gd);
        Registry.getComponentMethod('annotations', 'draw')(gd);
        Registry.getComponentMethod('legend', 'draw')(gd);
        Registry.getComponentMethod('rangeslider', 'draw')(gd);
        Registry.getComponentMethod('rangeselector', 'draw')(gd);
        Registry.getComponentMethod('sliders', 'draw')(gd);
        Registry.getComponentMethod('updatemenus', 'draw')(gd);
    }

    var seq = [
        Plots.previousPromises,
        addFrames,
        drawFramework,
        marginPushers,
        marginPushersAgain,
        positionAndAutorange,
        subroutines.layoutStyles,
        drawAxes,
        drawData,
        finalDraw,
        initInteractions,
        Plots.rehover,
        Plots.previousPromises
    ];

    // even if everything we did was synchronous, return a promise
    // so that the caller doesn't care which route we took
    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve();

    return plotDone.then(function() {
        gd.emit('plotly_afterplot');
        return gd;
    });
};

function setBackground(gd, bgColor) {
    try {
        gd._fullLayout._paper.style('background', bgColor);
    } catch(e) {
        Lib.error(e);
    }
}

function opaqueSetBackground(gd, bgColor) {
    var blend = Color.combine(bgColor, 'white');
    setBackground(gd, blend);
}

function setPlotContext(gd, config) {
    if(!gd._context) gd._context = Lib.extendDeep({}, Plotly.defaultConfig);
    var context = gd._context;

    var i, keys, key;

    if(config) {
        keys = Object.keys(config);
        for(i = 0; i < keys.length; i++) {
            key = keys[i];
            if(key === 'editable' || key === 'edits') continue;
            if(key in context) {
                if(key === 'setBackground' && config[key] === 'opaque') {
                    context[key] = opaqueSetBackground;
                } else {
                    context[key] = config[key];
                }
            }
        }

        // map plot3dPixelRatio to plotGlPixelRatio for backward compatibility
        if(config.plot3dPixelRatio && !context.plotGlPixelRatio) {
            context.plotGlPixelRatio = context.plot3dPixelRatio;
        }

        // now deal with editable and edits - first editable overrides
        // everything, then edits refines
        var editable = config.editable;
        if(editable !== undefined) {
            // we're not going to *use* context.editable, we're only going to
            // use context.edits... but keep it for the record
            context.editable = editable;

            keys = Object.keys(context.edits);
            for(i = 0; i < keys.length; i++) {
                context.edits[keys[i]] = editable;
            }
        }
        if(config.edits) {
            keys = Object.keys(config.edits);
            for(i = 0; i < keys.length; i++) {
                key = keys[i];
                if(key in context.edits) {
                    context.edits[key] = config.edits[key];
                }
            }
        }
    }

    // staticPlot forces a bunch of others:
    if(context.staticPlot) {
        context.editable = false;
        context.edits = {};
        context.autosizable = false;
        context.scrollZoom = false;
        context.doubleClick = false;
        context.showTips = false;
        context.showLink = false;
        context.displayModeBar = false;
    }

    // make sure hover-only devices have mode bar visible
    if(context.displayModeBar === 'hover' && !hasHover) {
        context.displayModeBar = true;
    }

    // default and fallback for setBackground
    if(context.setBackground === 'transparent' || typeof context.setBackground !== 'function') {
        context.setBackground = setBackground;
    }
}

function plotPolar(gd, data, layout) {
    // build or reuse the container skeleton
    var plotContainer = d3.select(gd).selectAll('.plot-container')
        .data([0]);
    plotContainer.enter()
        .insert('div', ':first-child')
        .classed('plot-container plotly', true);
    var paperDiv = plotContainer.selectAll('.svg-container')
        .data([0]);
    paperDiv.enter().append('div')
        .classed('svg-container', true)
        .style('position', 'relative');

    // empty it everytime for now
    paperDiv.html('');

    // fulfill gd requirements
    if(data) gd.data = data;
    if(layout) gd.layout = layout;
    Polar.manager.fillLayout(gd);

    // resize canvas
    paperDiv.style({
        width: gd._fullLayout.width + 'px',
        height: gd._fullLayout.height + 'px'
    });

    // instantiate framework
    gd.framework = Polar.manager.framework(gd);

    // plot
    gd.framework({data: gd.data, layout: gd.layout}, paperDiv.node());

    // set undo point
    gd.framework.setUndoPoint();

    // get the resulting svg for extending it
    var polarPlotSVG = gd.framework.svg();

    // editable title
    var opacity = 1;
    var txt = gd._fullLayout.title;
    if(txt === '' || !txt) opacity = 0;
    var placeholderText = 'Click to enter title';

    var titleLayout = function() {
        this.call(svgTextUtils.convertToTspans, gd);
        // TODO: html/mathjax
        // TODO: center title
    };

    var title = polarPlotSVG.select('.title-group text')
        .call(titleLayout);

    if(gd._context.edits.titleText) {
        if(!txt || txt === placeholderText) {
            opacity = 0.2;
            // placeholder is not going through convertToTspans
            // so needs explicit data-unformatted
            title.attr({'data-unformatted': placeholderText})
                .text(placeholderText)
                .style({opacity: opacity})
                .on('mouseover.opacity', function() {
                    d3.select(this).transition().duration(100)
                        .style('opacity', 1);
                })
                .on('mouseout.opacity', function() {
                    d3.select(this).transition().duration(1000)
                        .style('opacity', 0);
                });
        }

        var setContenteditable = function() {
            this.call(svgTextUtils.makeEditable, {gd: gd})
                .on('edit', function(text) {
                    gd.framework({layout: {title: text}});
                    this.text(text)
                        .call(titleLayout);
                    this.call(setContenteditable);
                })
                .on('cancel', function() {
                    var txt = this.attr('data-unformatted');
                    this.text(txt).call(titleLayout);
                });
        };
        title.call(setContenteditable);
    }

    gd._context.setBackground(gd, gd._fullLayout.paper_bgcolor);
    Plots.addLinks(gd);

    return Promise.resolve();
}

// convenience function to force a full redraw, mostly for use by plotly.js
Plotly.redraw = function(gd) {
    gd = Lib.getGraphDiv(gd);

    if(!Lib.isPlotDiv(gd)) {
        throw new Error('This element is not a Plotly plot: ' + gd);
    }

    helpers.cleanData(gd.data, gd.data);
    helpers.cleanLayout(gd.layout);

    gd.calcdata = undefined;
    return Plotly.plot(gd).then(function() {
        gd.emit('plotly_redraw');
        return gd;
    });
};

/**
 * Convenience function to make idempotent plot option obvious to users.
 *
 * @param gd
 * @param {Object[]} data
 * @param {Object} layout
 * @param {Object} config
 */
Plotly.newPlot = function(gd, data, layout, config) {
    gd = Lib.getGraphDiv(gd);

    // remove gl contexts
    Plots.cleanPlot([], {}, gd._fullData || {}, gd._fullLayout || {});

    Plots.purge(gd);
    return Plotly.plot(gd, data, layout, config);
};

/**
 * Wrap negative indicies to their positive counterparts.
 *
 * @param {Number[]} indices An array of indices
 * @param {Number} maxIndex The maximum index allowable (arr.length - 1)
 */
function positivifyIndices(indices, maxIndex) {
    var parentLength = maxIndex + 1,
        positiveIndices = [],
        i,
        index;

    for(i = 0; i < indices.length; i++) {
        index = indices[i];
        if(index < 0) {
            positiveIndices.push(parentLength + index);
        } else {
            positiveIndices.push(index);
        }
    }
    return positiveIndices;
}

/**
 * Ensures that an index array for manipulating gd.data is valid.
 *
 * Intended for use with addTraces, deleteTraces, and moveTraces.
 *
 * @param gd
 * @param indices
 * @param arrayName
 */
function assertIndexArray(gd, indices, arrayName) {
    var i,
        index;

    for(i = 0; i < indices.length; i++) {
        index = indices[i];

        // validate that indices are indeed integers
        if(index !== parseInt(index, 10)) {
            throw new Error('all values in ' + arrayName + ' must be integers');
        }

        // check that all indices are in bounds for given gd.data array length
        if(index >= gd.data.length || index < -gd.data.length) {
            throw new Error(arrayName + ' must be valid indices for gd.data.');
        }

        // check that indices aren't repeated
        if(indices.indexOf(index, i + 1) > -1 ||
                index >= 0 && indices.indexOf(-gd.data.length + index) > -1 ||
                index < 0 && indices.indexOf(gd.data.length + index) > -1) {
            throw new Error('each index in ' + arrayName + ' must be unique.');
        }
    }
}

/**
 * Private function used by Plotly.moveTraces to check input args
 *
 * @param gd
 * @param currentIndices
 * @param newIndices
 */
function checkMoveTracesArgs(gd, currentIndices, newIndices) {

    // check that gd has attribute 'data' and 'data' is array
    if(!Array.isArray(gd.data)) {
        throw new Error('gd.data must be an array.');
    }

    // validate currentIndices array
    if(typeof currentIndices === 'undefined') {
        throw new Error('currentIndices is a required argument.');
    } else if(!Array.isArray(currentIndices)) {
        currentIndices = [currentIndices];
    }
    assertIndexArray(gd, currentIndices, 'currentIndices');

    // validate newIndices array if it exists
    if(typeof newIndices !== 'undefined' && !Array.isArray(newIndices)) {
        newIndices = [newIndices];
    }
    if(typeof newIndices !== 'undefined') {
        assertIndexArray(gd, newIndices, 'newIndices');
    }

    // check currentIndices and newIndices are the same length if newIdices exists
    if(typeof newIndices !== 'undefined' && currentIndices.length !== newIndices.length) {
        throw new Error('current and new indices must be of equal length.');
    }

}
/**
 * A private function to reduce the type checking clutter in addTraces.
 *
 * @param gd
 * @param traces
 * @param newIndices
 */
function checkAddTracesArgs(gd, traces, newIndices) {
    var i, value;

    // check that gd has attribute 'data' and 'data' is array
    if(!Array.isArray(gd.data)) {
        throw new Error('gd.data must be an array.');
    }

    // make sure traces exists
    if(typeof traces === 'undefined') {
        throw new Error('traces must be defined.');
    }

    // make sure traces is an array
    if(!Array.isArray(traces)) {
        traces = [traces];
    }

    // make sure each value in traces is an object
    for(i = 0; i < traces.length; i++) {
        value = traces[i];
        if(typeof value !== 'object' || (Array.isArray(value) || value === null)) {
            throw new Error('all values in traces array must be non-array objects');
        }
    }

    // make sure we have an index for each trace
    if(typeof newIndices !== 'undefined' && !Array.isArray(newIndices)) {
        newIndices = [newIndices];
    }
    if(typeof newIndices !== 'undefined' && newIndices.length !== traces.length) {
        throw new Error(
            'if indices is specified, traces.length must equal indices.length'
        );
    }
}

/**
 * A private function to reduce the type checking clutter in spliceTraces.
 * Get all update Properties from gd.data. Validate inputs and outputs.
 * Used by prependTrace and extendTraces
 *
 * @param gd
 * @param update
 * @param indices
 * @param maxPoints
 */
function assertExtendTracesArgs(gd, update, indices, maxPoints) {

    var maxPointsIsObject = Lib.isPlainObject(maxPoints);

    if(!Array.isArray(gd.data)) {
        throw new Error('gd.data must be an array');
    }
    if(!Lib.isPlainObject(update)) {
        throw new Error('update must be a key:value object');
    }

    if(typeof indices === 'undefined') {
        throw new Error('indices must be an integer or array of integers');
    }

    assertIndexArray(gd, indices, 'indices');

    for(var key in update) {

        /*
         * Verify that the attribute to be updated contains as many trace updates
         * as indices. Failure must result in throw and no-op
         */
        if(!Array.isArray(update[key]) || update[key].length !== indices.length) {
            throw new Error('attribute ' + key + ' must be an array of length equal to indices array length');
        }

        /*
         * if maxPoints is an object it must match keys and array lengths of 'update' 1:1
         */
        if(maxPointsIsObject &&
            (!(key in maxPoints) || !Array.isArray(maxPoints[key]) ||
            maxPoints[key].length !== update[key].length)) {
            throw new Error('when maxPoints is set as a key:value object it must contain a 1:1 ' +
                            'corrispondence with the keys and number of traces in the update object');
        }
    }
}

/**
 * A private function to reduce the type checking clutter in spliceTraces.
 *
 * @param {Object|HTMLDivElement} gd
 * @param {Object} update
 * @param {Number[]} indices
 * @param {Number||Object} maxPoints
 * @return {Object[]}
 */
function getExtendProperties(gd, update, indices, maxPoints) {

    var maxPointsIsObject = Lib.isPlainObject(maxPoints),
        updateProps = [];
    var trace, target, prop, insert, maxp;

    // allow scalar index to represent a single trace position
    if(!Array.isArray(indices)) indices = [indices];

    // negative indices are wrapped around to their positive value. Equivalent to python indexing.
    indices = positivifyIndices(indices, gd.data.length - 1);

    // loop through all update keys and traces and harvest validated data.
    for(var key in update) {

        for(var j = 0; j < indices.length; j++) {

            /*
             * Choose the trace indexed by the indices map argument and get the prop setter-getter
             * instance that references the key and value for this particular trace.
             */
            trace = gd.data[indices[j]];
            prop = Lib.nestedProperty(trace, key);

            /*
             * Target is the existing gd.data.trace.dataArray value like "x" or "marker.size"
             * Target must exist as an Array to allow the extend operation to be performed.
             */
            target = prop.get();
            insert = update[key][j];

            if(!Array.isArray(insert)) {
                throw new Error('attribute: ' + key + ' index: ' + j + ' must be an array');
            }
            if(!Array.isArray(target)) {
                throw new Error('cannot extend missing or non-array attribute: ' + key);
            }

            /*
             * maxPoints may be an object map or a scalar. If object select the key:value, else
             * Use the scalar maxPoints for all key and trace combinations.
             */
            maxp = maxPointsIsObject ? maxPoints[key][j] : maxPoints;

            // could have chosen null here, -1 just tells us to not take a window
            if(!isNumeric(maxp)) maxp = -1;

            /*
             * Wrap the nestedProperty in an object containing required data
             * for lengthening and windowing this particular trace - key combination.
             * Flooring maxp mirrors the behaviour of floats in the Array.slice JSnative function.
             */
            updateProps.push({
                prop: prop,
                target: target,
                insert: insert,
                maxp: Math.floor(maxp)
            });
        }
    }

    // all target and insertion data now validated
    return updateProps;
}

/**
 * A private function to key Extend and Prepend traces DRY
 *
 * @param {Object|HTMLDivElement} gd
 * @param {Object} update
 * @param {Number[]} indices
 * @param {Number||Object} maxPoints
 * @param {Function} lengthenArray
 * @param {Function} spliceArray
 * @return {Object}
 */
function spliceTraces(gd, update, indices, maxPoints, lengthenArray, spliceArray) {

    assertExtendTracesArgs(gd, update, indices, maxPoints);

    var updateProps = getExtendProperties(gd, update, indices, maxPoints),
        remainder = [],
        undoUpdate = {},
        undoPoints = {};
    var target, prop, maxp;

    for(var i = 0; i < updateProps.length; i++) {

        /*
         * prop is the object returned by Lib.nestedProperties
         */
        prop = updateProps[i].prop;
        maxp = updateProps[i].maxp;

        target = lengthenArray(updateProps[i].target, updateProps[i].insert);

        /*
         * If maxp is set within post-extension trace.length, splice to maxp length.
         * Otherwise skip function call as splice op will have no effect anyway.
         */
        if(maxp >= 0 && maxp < target.length) remainder = spliceArray(target, maxp);

        /*
         * to reverse this operation we need the size of the original trace as the reverse
         * operation will need to window out any lengthening operation performed in this pass.
         */
        maxp = updateProps[i].target.length;

        /*
         * Magic happens here! update gd.data.trace[key] with new array data.
         */
        prop.set(target);

        if(!Array.isArray(undoUpdate[prop.astr])) undoUpdate[prop.astr] = [];
        if(!Array.isArray(undoPoints[prop.astr])) undoPoints[prop.astr] = [];

        /*
         * build the inverse update object for the undo operation
         */
        undoUpdate[prop.astr].push(remainder);

        /*
         * build the matching maxPoints undo object containing original trace lengths.
         */
        undoPoints[prop.astr].push(maxp);
    }

    return {update: undoUpdate, maxPoints: undoPoints};
}

/**
 * extend && prepend traces at indices with update arrays, window trace lengths to maxPoints
 *
 * Extend and Prepend have identical APIs. Prepend inserts an array at the head while Extend
 * inserts an array off the tail. Prepend truncates the tail of the array - counting maxPoints
 * from the head, whereas Extend truncates the head of the array, counting backward maxPoints
 * from the tail.
 *
 * If maxPoints is undefined, nonNumeric, negative or greater than extended trace length no
 * truncation / windowing will be performed. If its zero, well the whole trace is truncated.
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object} update The key:array map of target attributes to extend
 * @param {Number|Number[]} indices The locations of traces to be extended
 * @param {Number|Object} [maxPoints] Number of points for trace window after lengthening.
 *
 */
Plotly.extendTraces = function extendTraces(gd, update, indices, maxPoints) {
    gd = Lib.getGraphDiv(gd);

    var undo = spliceTraces(gd, update, indices, maxPoints,

                           /*
                            * The Lengthen operation extends trace from end with insert
                            */
                            function(target, insert) {
                                return target.concat(insert);
                            },

                            /*
                             * Window the trace keeping maxPoints, counting back from the end
                             */
                            function(target, maxPoints) {
                                return target.splice(0, target.length - maxPoints);
                            });

    var promise = Plotly.redraw(gd);

    var undoArgs = [gd, undo.update, indices, undo.maxPoints];
    Queue.add(gd, Plotly.prependTraces, undoArgs, extendTraces, arguments);

    return promise;
};

Plotly.prependTraces = function prependTraces(gd, update, indices, maxPoints) {
    gd = Lib.getGraphDiv(gd);

    var undo = spliceTraces(gd, update, indices, maxPoints,

                           /*
                            * The Lengthen operation extends trace by appending insert to start
                            */
                            function(target, insert) {
                                return insert.concat(target);
                            },

                            /*
                             * Window the trace keeping maxPoints, counting forward from the start
                             */
                            function(target, maxPoints) {
                                return target.splice(maxPoints, target.length);
                            });

    var promise = Plotly.redraw(gd);

    var undoArgs = [gd, undo.update, indices, undo.maxPoints];
    Queue.add(gd, Plotly.extendTraces, undoArgs, prependTraces, arguments);

    return promise;
};

/**
 * Add data traces to an existing graph div.
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object[]} gd.data The array of traces we're adding to
 * @param {Object[]|Object} traces The object or array of objects to add
 * @param {Number[]|Number} [newIndices=[gd.data.length]] Locations to add traces
 *
 */
Plotly.addTraces = function addTraces(gd, traces, newIndices) {
    gd = Lib.getGraphDiv(gd);

    var currentIndices = [],
        undoFunc = Plotly.deleteTraces,
        redoFunc = addTraces,
        undoArgs = [gd, currentIndices],
        redoArgs = [gd, traces],  // no newIndices here
        i,
        promise;

    // all validation is done elsewhere to remove clutter here
    checkAddTracesArgs(gd, traces, newIndices);

    // make sure traces is an array
    if(!Array.isArray(traces)) {
        traces = [traces];
    }

    // make sure traces do not repeat existing ones
    traces = traces.map(function(trace) {
        return Lib.extendFlat({}, trace);
    });

    helpers.cleanData(traces, gd.data);

    // add the traces to gd.data (no redrawing yet!)
    for(i = 0; i < traces.length; i++) {
        gd.data.push(traces[i]);
    }

    // to continue, we need to call moveTraces which requires currentIndices
    for(i = 0; i < traces.length; i++) {
        currentIndices.push(-traces.length + i);
    }

    // if the user didn't define newIndices, they just want the traces appended
    // i.e., we can simply redraw and be done
    if(typeof newIndices === 'undefined') {
        promise = Plotly.redraw(gd);
        Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);
        return promise;
    }

    // make sure indices is property defined
    if(!Array.isArray(newIndices)) {
        newIndices = [newIndices];
    }

    try {

        // this is redundant, but necessary to not catch later possible errors!
        checkMoveTracesArgs(gd, currentIndices, newIndices);
    }
    catch(error) {

        // something went wrong, reset gd to be safe and rethrow error
        gd.data.splice(gd.data.length - traces.length, traces.length);
        throw error;
    }

    // if we're here, the user has defined specific places to place the new traces
    // this requires some extra work that moveTraces will do
    Queue.startSequence(gd);
    Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);
    promise = Plotly.moveTraces(gd, currentIndices, newIndices);
    Queue.stopSequence(gd);
    return promise;
};

/**
 * Delete traces at `indices` from gd.data array.
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object[]} gd.data The array of traces we're removing from
 * @param {Number|Number[]} indices The indices
 */
Plotly.deleteTraces = function deleteTraces(gd, indices) {
    gd = Lib.getGraphDiv(gd);

    var traces = [],
        undoFunc = Plotly.addTraces,
        redoFunc = deleteTraces,
        undoArgs = [gd, traces, indices],
        redoArgs = [gd, indices],
        i,
        deletedTrace;

    // make sure indices are defined
    if(typeof indices === 'undefined') {
        throw new Error('indices must be an integer or array of integers.');
    } else if(!Array.isArray(indices)) {
        indices = [indices];
    }
    assertIndexArray(gd, indices, 'indices');

    // convert negative indices to positive indices
    indices = positivifyIndices(indices, gd.data.length - 1);

    // we want descending here so that splicing later doesn't affect indexing
    indices.sort(Lib.sorterDes);
    for(i = 0; i < indices.length; i += 1) {
        deletedTrace = gd.data.splice(indices[i], 1)[0];
        traces.push(deletedTrace);
    }

    var promise = Plotly.redraw(gd);
    Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return promise;
};

/**
 * Move traces at currentIndices array to locations in newIndices array.
 *
 * If newIndices is omitted, currentIndices will be moved to the end. E.g.,
 * these are equivalent:
 *
 * Plotly.moveTraces(gd, [1, 2, 3], [-3, -2, -1])
 * Plotly.moveTraces(gd, [1, 2, 3])
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object[]} gd.data The array of traces we're removing from
 * @param {Number|Number[]} currentIndices The locations of traces to be moved
 * @param {Number|Number[]} [newIndices] The locations to move traces to
 *
 * Example calls:
 *
 *      // move trace i to location x
 *      Plotly.moveTraces(gd, i, x)
 *
 *      // move trace i to end of array
 *      Plotly.moveTraces(gd, i)
 *
 *      // move traces i, j, k to end of array (i != j != k)
 *      Plotly.moveTraces(gd, [i, j, k])
 *
 *      // move traces [i, j, k] to [x, y, z] (i != j != k) (x != y != z)
 *      Plotly.moveTraces(gd, [i, j, k], [x, y, z])
 *
 *      // reorder all traces (assume there are 5--a, b, c, d, e)
 *      Plotly.moveTraces(gd, [b, d, e, a, c])  // same as 'move to end'
 */
Plotly.moveTraces = function moveTraces(gd, currentIndices, newIndices) {
    gd = Lib.getGraphDiv(gd);

    var newData = [],
        movingTraceMap = [],
        undoFunc = moveTraces,
        redoFunc = moveTraces,
        undoArgs = [gd, newIndices, currentIndices],
        redoArgs = [gd, currentIndices, newIndices],
        i;

    // to reduce complexity here, check args elsewhere
    // this throws errors where appropriate
    checkMoveTracesArgs(gd, currentIndices, newIndices);

    // make sure currentIndices is an array
    currentIndices = Array.isArray(currentIndices) ? currentIndices : [currentIndices];

    // if undefined, define newIndices to point to the end of gd.data array
    if(typeof newIndices === 'undefined') {
        newIndices = [];
        for(i = 0; i < currentIndices.length; i++) {
            newIndices.push(-currentIndices.length + i);
        }
    }

    // make sure newIndices is an array if it's user-defined
    newIndices = Array.isArray(newIndices) ? newIndices : [newIndices];

    // convert negative indices to positive indices (they're the same length)
    currentIndices = positivifyIndices(currentIndices, gd.data.length - 1);
    newIndices = positivifyIndices(newIndices, gd.data.length - 1);

    // at this point, we've coerced the index arrays into predictable forms

    // get the traces that aren't being moved around
    for(i = 0; i < gd.data.length; i++) {

        // if index isn't in currentIndices, include it in ignored!
        if(currentIndices.indexOf(i) === -1) {
            newData.push(gd.data[i]);
        }
    }

    // get a mapping of indices to moving traces
    for(i = 0; i < currentIndices.length; i++) {
        movingTraceMap.push({newIndex: newIndices[i], trace: gd.data[currentIndices[i]]});
    }

    // reorder this mapping by newIndex, ascending
    movingTraceMap.sort(function(a, b) {
        return a.newIndex - b.newIndex;
    });

    // now, add the moving traces back in, in order!
    for(i = 0; i < movingTraceMap.length; i += 1) {
        newData.splice(movingTraceMap[i].newIndex, 0, movingTraceMap[i].trace);
    }

    gd.data = newData;

    var promise = Plotly.redraw(gd);
    Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return promise;
};

/**
 * restyle: update trace attributes of an existing plot
 *
 * Can be called two ways.
 *
 * Signature 1:
 * @param {String | HTMLDivElement} gd
 *  the id or DOM element of the graph container div
 * @param {String} astr
 *  attribute string (like `'marker.symbol'`) to update
 * @param {*} val
 *  value to give this attribute
 * @param {Number[] | Number} [traces]
 *  integer or array of integers for the traces to alter (all if omitted)
 *
 * Signature 2:
 * @param {String | HTMLDivElement} gd
 *  (as in signature 1)
 * @param {Object} aobj
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  allows setting multiple attributes simultaneously
 * @param {Number[] | Number} [traces]
 *  (as in signature 1)
 *
 * `val` (or `val1`, `val2` ... in the object form) can be an array,
 * to apply different values to each trace.
 *
 * If the array is too short, it will wrap around (useful for
 * style files that want to specify cyclical default values).
 */
Plotly.restyle = function restyle(gd, astr, val, _traces) {
    gd = Lib.getGraphDiv(gd);
    helpers.clearPromiseQueue(gd);

    var aobj = {};
    if(typeof astr === 'string') aobj[astr] = val;
    else if(Lib.isPlainObject(astr)) {
        // the 3-arg form
        aobj = Lib.extendFlat({}, astr);
        if(_traces === undefined) _traces = val;
    }
    else {
        Lib.warn('Restyle fail.', astr, val, _traces);
        return Promise.reject();
    }

    if(Object.keys(aobj).length) gd.changed = true;

    var traces = helpers.coerceTraceIndices(gd, _traces);

    var specs = _restyle(gd, aobj, traces),
        flags = specs.flags;

    // clear calcdata and/or axis types if required so they get regenerated
    if(flags.clearCalc) gd.calcdata = undefined;
    if(flags.clearAxisTypes) helpers.clearAxisTypes(gd, traces, {});

    // fill in redraw sequence
    var seq = [];

    if(flags.fullReplot) {
        seq.push(Plotly.plot);
    } else {
        seq.push(Plots.previousPromises);

        Plots.supplyDefaults(gd);

        if(flags.style) seq.push(subroutines.doTraceStyle);
        if(flags.colorbars) seq.push(subroutines.doColorBars);
    }

    seq.push(Plots.rehover);

    Queue.add(gd,
        restyle, [gd, specs.undoit, specs.traces],
        restyle, [gd, specs.redoit, specs.traces]
    );

    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve();

    return plotDone.then(function() {
        gd.emit('plotly_restyle', specs.eventData);
        return gd;
    });
};

// for undo: undefined initial vals must be turned into nulls
// so that we unset rather than ignore them
function undefinedToNull(val) {
    if(val === undefined) return null;
    return val;
}

function _restyle(gd, aobj, traces) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData,
        data = gd.data,
        i;

    // initialize flags
    var flags = editTypes.traceFlags();

    // copies of the change (and previous values of anything affected)
    // for the undo / redo queue
    var redoit = {},
        undoit = {},
        axlist,
        flagAxForDelete = {};

    // make a new empty vals array for undoit
    function a0() { return traces.map(function() { return undefined; }); }

    // for autoranging multiple axes
    function addToAxlist(axid) {
        var axName = Plotly.Axes.id2name(axid);
        if(axlist.indexOf(axName) === -1) axlist.push(axName);
    }

    function autorangeAttr(axName) { return 'LAYOUT' + axName + '.autorange'; }

    function rangeAttr(axName) { return 'LAYOUT' + axName + '.range'; }

    // for attrs that interact (like scales & autoscales), save the
    // old vals before making the change
    // val=undefined will not set a value, just record what the value was.
    // val=null will delete the attribute
    // attr can be an array to set several at once (all to the same val)
    function doextra(attr, val, i) {
        if(Array.isArray(attr)) {
            attr.forEach(function(a) { doextra(a, val, i); });
            return;
        }
        // quit if explicitly setting this elsewhere
        if(attr in aobj || helpers.hasParent(aobj, attr)) return;

        var extraparam;
        if(attr.substr(0, 6) === 'LAYOUT') {
            extraparam = Lib.nestedProperty(gd.layout, attr.replace('LAYOUT', ''));
        } else {
            extraparam = Lib.nestedProperty(data[traces[i]], attr);
        }

        if(!(attr in undoit)) {
            undoit[attr] = a0();
        }
        if(undoit[attr][i] === undefined) {
            undoit[attr][i] = undefinedToNull(extraparam.get());
        }
        if(val !== undefined) {
            extraparam.set(val);
        }
    }

    // now make the changes to gd.data (and occasionally gd.layout)
    // and figure out what kind of graphics update we need to do
    for(var ai in aobj) {
        if(helpers.hasParent(aobj, ai)) {
            throw new Error('cannot set ' + ai + 'and a parent attribute simultaneously');
        }

        var vi = aobj[ai],
            cont,
            contFull,
            param,
            oldVal,
            newVal,
            valObject;

        redoit[ai] = vi;

        if(ai.substr(0, 6) === 'LAYOUT') {
            param = Lib.nestedProperty(gd.layout, ai.replace('LAYOUT', ''));
            undoit[ai] = [undefinedToNull(param.get())];
            // since we're allowing val to be an array, allow it here too,
            // even though that's meaningless
            param.set(Array.isArray(vi) ? vi[0] : vi);
            // ironically, the layout attrs in restyle only require replot,
            // not relayout
            flags.calc = true;
            continue;
        }

        // set attribute in gd.data
        undoit[ai] = a0();
        for(i = 0; i < traces.length; i++) {
            cont = data[traces[i]];
            contFull = fullData[traces[i]];
            param = Lib.nestedProperty(cont, ai);
            oldVal = param.get();
            newVal = Array.isArray(vi) ? vi[i % vi.length] : vi;

            if(newVal === undefined) continue;

            valObject = PlotSchema.getTraceValObject(contFull, param.parts);

            if(valObject && valObject.impliedEdits && newVal !== null) {
                for(var impliedKey in valObject.impliedEdits) {
                    doextra(Lib.relativeAttr(ai, impliedKey), valObject.impliedEdits[impliedKey], i);
                }
            }

            // changing colorbar size modes,
            // make the resulting size not change
            // note that colorbar fractional sizing is based on the
            // original plot size, before anything (like a colorbar)
            // increases the margins
            else if(ai === 'colorbar.thicknessmode' && param.get() !== newVal &&
                        ['fraction', 'pixels'].indexOf(newVal) !== -1 &&
                        contFull.colorbar) {
                var thicknorm =
                    ['top', 'bottom'].indexOf(contFull.colorbar.orient) !== -1 ?
                        (fullLayout.height - fullLayout.margin.t - fullLayout.margin.b) :
                        (fullLayout.width - fullLayout.margin.l - fullLayout.margin.r);
                doextra('colorbar.thickness', contFull.colorbar.thickness *
                    (newVal === 'fraction' ? 1 / thicknorm : thicknorm), i);
            }
            else if(ai === 'colorbar.lenmode' && param.get() !== newVal &&
                        ['fraction', 'pixels'].indexOf(newVal) !== -1 &&
                        contFull.colorbar) {
                var lennorm =
                    ['top', 'bottom'].indexOf(contFull.colorbar.orient) !== -1 ?
                        (fullLayout.width - fullLayout.margin.l - fullLayout.margin.r) :
                        (fullLayout.height - fullLayout.margin.t - fullLayout.margin.b);
                doextra('colorbar.len', contFull.colorbar.len *
                    (newVal === 'fraction' ? 1 / lennorm : lennorm), i);
            }
            else if(ai === 'colorbar.tick0' || ai === 'colorbar.dtick') {
                doextra('colorbar.tickmode', 'linear', i);
            }

            if(ai === 'type' && (newVal === 'pie') !== (oldVal === 'pie')) {
                var labelsTo = 'x',
                    valuesTo = 'y';
                if((newVal === 'bar' || oldVal === 'bar') && cont.orientation === 'h') {
                    labelsTo = 'y';
                    valuesTo = 'x';
                }
                Lib.swapAttrs(cont, ['?', '?src'], 'labels', labelsTo);
                Lib.swapAttrs(cont, ['d?', '?0'], 'label', labelsTo);
                Lib.swapAttrs(cont, ['?', '?src'], 'values', valuesTo);

                if(oldVal === 'pie') {
                    Lib.nestedProperty(cont, 'marker.color')
                        .set(Lib.nestedProperty(cont, 'marker.colors').get());

                    // super kludgy - but if all pies are gone we won't remove them otherwise
                    fullLayout._pielayer.selectAll('g.trace').remove();
                } else if(Registry.traceIs(cont, 'cartesian')) {
                    Lib.nestedProperty(cont, 'marker.colors')
                        .set(Lib.nestedProperty(cont, 'marker.color').get());
                    // look for axes that are no longer in use and delete them
                    flagAxForDelete[cont.xaxis || 'x'] = true;
                    flagAxForDelete[cont.yaxis || 'y'] = true;
                }
            }

            undoit[ai][i] = undefinedToNull(oldVal);
            // set the new value - if val is an array, it's one el per trace
            // first check for attributes that get more complex alterations
            var swapAttrs = [
                'swapxy', 'swapxyaxes', 'orientation', 'orientationaxes'
            ];
            if(swapAttrs.indexOf(ai) !== -1) {
                // setting an orientation: make sure it's changing
                // before we swap everything else
                if(ai === 'orientation') {
                    param.set(newVal);
                    // obnoxious that we need this level of coupling... but in order to
                    // properly handle setting orientation to `null` we need to mimic
                    // the logic inside Bars.supplyDefaults for default orientation
                    var defaultOrientation = (cont.x && !cont.y) ? 'h' : 'v';
                    if((param.get() || defaultOrientation) === contFull.orientation) {
                        continue;
                    }
                }
                // orientationaxes has no value,
                // it flips everything and the axes
                else if(ai === 'orientationaxes') {
                    cont.orientation =
                        {v: 'h', h: 'v'}[contFull.orientation];
                }
                helpers.swapXYData(cont);
                flags.calc = flags.clearAxisTypes = true;
            }
            else if(Plots.dataArrayContainers.indexOf(param.parts[0]) !== -1) {
                // TODO: use manageArrays.applyContainerArrayChanges here too
                helpers.manageArrayContainers(param, newVal, undoit);
                flags.calc = true;
            }
            else {
                if(valObject) {
                    // must redo calcdata when restyling array values of arrayOk attributes
                    if(valObject.arrayOk && (Array.isArray(newVal) || Array.isArray(oldVal))) {
                        flags.calc = true;
                    }
                    else editTypes.update(flags, valObject);
                }
                else {
                    /*
                     * if we couldn't find valObject,  assume a full recalc.
                     * This can happen if you're changing type and making
                     * some other edits too, so the modules we're
                     * looking at don't have these attributes in them.
                     */
                    flags.calc = true;
                }

                // all the other ones, just modify that one attribute
                param.set(newVal);
            }
        }

        // swap the data attributes of the relevant x and y axes?
        if(['swapxyaxes', 'orientationaxes'].indexOf(ai) !== -1) {
            Plotly.Axes.swap(gd, traces);
        }

        // swap hovermode if set to "compare x/y data"
        if(ai === 'orientationaxes') {
            var hovermode = Lib.nestedProperty(gd.layout, 'hovermode');
            if(hovermode.get() === 'x') {
                hovermode.set('y');
            } else if(hovermode.get() === 'y') {
                hovermode.set('x');
            }
        }

        // major enough changes deserve autoscale, autobin, and
        // non-reversed axes so people don't get confused
        if(['orientation', 'type'].indexOf(ai) !== -1) {
            axlist = [];
            for(i = 0; i < traces.length; i++) {
                var trace = data[traces[i]];

                if(Registry.traceIs(trace, 'cartesian')) {
                    addToAxlist(trace.xaxis || 'x');
                    addToAxlist(trace.yaxis || 'y');

                    if(ai === 'type') {
                        doextra(['autobinx', 'autobiny'], true, i);
                    }
                }
            }

            doextra(axlist.map(autorangeAttr), true, 0);
            doextra(axlist.map(rangeAttr), [0, 1], 0);
        }
    }

    // do we need to force a recalc?
    var autorangeOn = false;
    var axList = Plotly.Axes.list(gd);
    for(i = 0; i < axList.length; i++) {
        if(axList[i].autorange) {
            autorangeOn = true;
            break;
        }
    }

    // check axes we've flagged for possible deletion
    // flagAxForDelete is a hash so we can make sure we only get each axis once
    var axListForDelete = Object.keys(flagAxForDelete);
    axisLoop:
    for(i = 0; i < axListForDelete.length; i++) {
        var axId = axListForDelete[i],
            axLetter = axId.charAt(0),
            axAttr = axLetter + 'axis';

        for(var j = 0; j < data.length; j++) {
            if(Registry.traceIs(data[j], 'cartesian') &&
                    (data[j][axAttr] || axLetter) === axId) {
                continue axisLoop;
            }
        }

        // no data on this axis - delete it.
        doextra('LAYOUT' + Plotly.Axes.id2name(axId), null, 0);
    }

    // combine a few flags together;
    if(flags.calc || (flags.calcIfAutorange && autorangeOn)) {
        flags.clearCalc = true;
    }
    if(flags.calc || flags.plot || flags.calcIfAutorange) {
        flags.fullReplot = true;
    }

    return {
        flags: flags,
        undoit: undoit,
        redoit: redoit,
        traces: traces,
        eventData: Lib.extendDeepNoArrays([], [redoit, traces])
    };
}

/**
 * relayout: update layout attributes of an existing plot
 *
 * Can be called two ways:
 *
 * Signature 1:
 * @param {String | HTMLDivElement} gd
 *  the id or dom element of the graph container div
 * @param {String} astr
 *  attribute string (like `'xaxis.range[0]'`) to update
 * @param {*} val
 *  value to give this attribute
 *
 * Signature 2:
 * @param {String | HTMLDivElement} gd
 *  (as in signature 1)
 * @param {Object} aobj
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  allows setting multiple attributes simultaneously
 */
Plotly.relayout = function relayout(gd, astr, val) {
    gd = Lib.getGraphDiv(gd);
    helpers.clearPromiseQueue(gd);

    if(gd.framework && gd.framework.isPolar) {
        return Promise.resolve(gd);
    }

    var aobj = {};
    if(typeof astr === 'string') {
        aobj[astr] = val;
    } else if(Lib.isPlainObject(astr)) {
        aobj = Lib.extendFlat({}, astr);
    } else {
        Lib.warn('Relayout fail.', astr, val);
        return Promise.reject();
    }

    if(Object.keys(aobj).length) gd.changed = true;

    var specs = _relayout(gd, aobj),
        flags = specs.flags;

    // clear calcdata if required
    if(flags.calc) gd.calcdata = undefined;

    // fill in redraw sequence

    // even if we don't have anything left in aobj,
    // something may have happened within relayout that we
    // need to wait for
    var seq = [Plots.previousPromises];

    if(flags.layoutReplot) {
        seq.push(subroutines.layoutReplot);
    }
    else if(Object.keys(aobj).length) {
        Plots.supplyDefaults(gd);

        if(flags.legend) seq.push(subroutines.doLegend);
        if(flags.layoutstyle) seq.push(subroutines.layoutStyles);
        if(flags.ticks) seq.push(subroutines.doTicksRelayout);
        if(flags.modebar) seq.push(subroutines.doModeBar);
        if(flags.camera) seq.push(subroutines.doCamera);
    }

    seq.push(Plots.rehover);

    Queue.add(gd,
        relayout, [gd, specs.undoit],
        relayout, [gd, specs.redoit]
    );

    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve(gd);

    return plotDone.then(function() {
        gd.emit('plotly_relayout', specs.eventData);
        return gd;
    });
};

function _relayout(gd, aobj) {
    var layout = gd.layout,
        fullLayout = gd._fullLayout,
        keys = Object.keys(aobj),
        axes = Plotly.Axes.list(gd),
        arrayEdits = {},
        arrayStr,
        i,
        j;

    // look for 'allaxes', split out into all axes
    // in case of 3D the axis are nested within a scene which is held in _id
    for(i = 0; i < keys.length; i++) {
        if(keys[i].indexOf('allaxes') === 0) {
            for(j = 0; j < axes.length; j++) {
                var scene = axes[j]._id.substr(1),
                    axisAttr = (scene.indexOf('scene') !== -1) ? (scene + '.') : '',
                    newkey = keys[i].replace('allaxes', axisAttr + axes[j]._name);

                if(!aobj[newkey]) aobj[newkey] = aobj[keys[i]];
            }

            delete aobj[keys[i]];
        }
    }

    // initialize flags
    var flags = editTypes.layoutFlags();

    // copies of the change (and previous values of anything affected)
    // for the undo / redo queue
    var redoit = {},
        undoit = {};

    // for attrs that interact (like scales & autoscales), save the
    // old vals before making the change
    // val=undefined will not set a value, just record what the value was.
    // attr can be an array to set several at once (all to the same val)
    function doextra(attr, val) {
        if(Array.isArray(attr)) {
            attr.forEach(function(a) { doextra(a, val); });
            return;
        }

        // if we have another value for this attribute (explicitly or
        // via a parent) do not override with this auto-generated extra
        if(attr in aobj || helpers.hasParent(aobj, attr)) return;

        var p = Lib.nestedProperty(layout, attr);
        if(!(attr in undoit)) {
            undoit[attr] = undefinedToNull(p.get());
        }
        if(val !== undefined) p.set(val);
    }

    // for editing annotations or shapes - is it on autoscaled axes?
    function refAutorange(obj, axLetter) {
        if(!Lib.isPlainObject(obj)) return false;
        var axRef = obj[axLetter + 'ref'] || axLetter,
            ax = Plotly.Axes.getFromId(gd, axRef);

        if(!ax && axRef.charAt(0) === axLetter) {
            // fall back on the primary axis in case we've referenced a
            // nonexistent axis (as we do above if axRef is missing).
            // This assumes the object defaults to data referenced, which
            // is the case for shapes and annotations but not for images.
            // The only thing this is used for is to determine whether to
            // do a full `recalc`, so the only ill effect of this error is
            // to waste some time.
            ax = Plotly.Axes.getFromId(gd, axLetter);
        }
        return (ax || {}).autorange;
    }

    // for constraint enforcement: keep track of all axes (as {id: name})
    // we're editing the (auto)range of, so we can tell the others constrained
    // to scale with them that it's OK for them to shrink
    var rangesAltered = {};
    var axId;

    function recordAlteredAxis(pleafPlus) {
        var axId = axisIds.name2id(pleafPlus.split('.')[0]);
        rangesAltered[axId] = 1;
        return axId;
    }

    // alter gd.layout
    for(var ai in aobj) {
        if(helpers.hasParent(aobj, ai)) {
            throw new Error('cannot set ' + ai + 'and a parent attribute simultaneously');
        }

        var p = Lib.nestedProperty(layout, ai),
            vi = aobj[ai],
            plen = p.parts.length,
            // p.parts may end with an index integer if the property is an array
            pend = typeof p.parts[plen - 1] === 'string' ? (plen - 1) : (plen - 2),
            // last property in chain (leaf node)
            pleaf = p.parts[pend],
            // leaf plus immediate parent
            pleafPlus = p.parts[pend - 1] + '.' + pleaf,
            // trunk nodes (everything except the leaf)
            ptrunk = p.parts.slice(0, pend).join('.'),
            parentIn = Lib.nestedProperty(gd.layout, ptrunk).get(),
            parentFull = Lib.nestedProperty(fullLayout, ptrunk).get(),
            vOld = p.get();

        if(vi === undefined) continue;

        redoit[ai] = vi;

        // axis reverse is special - it is its own inverse
        // op and has no flag.
        undoit[ai] = (pleaf === 'reverse') ? vi : undefinedToNull(vOld);

        var valObject = PlotSchema.getLayoutValObject(fullLayout, p.parts);

        if(valObject && valObject.impliedEdits && vi !== null) {
            for(var impliedKey in valObject.impliedEdits) {
                doextra(Lib.relativeAttr(ai, impliedKey), valObject.impliedEdits[impliedKey]);
            }
        }

        // Setting width or height to null must reset the graph's width / height
        // back to its initial value as computed during the first pass in Plots.plotAutoSize.
        //
        // To do so, we must manually set them back here using the _initialAutoSize cache.
        if(['width', 'height'].indexOf(ai) !== -1 && vi === null) {
            fullLayout[ai] = gd._initialAutoSize[ai];
        }
        // check autorange vs range
        else if(pleafPlus.match(/^[xyz]axis[0-9]*\.range(\[[0|1]\])?$/)) {
            recordAlteredAxis(pleafPlus);
            Lib.nestedProperty(fullLayout, ptrunk + '._inputRange').set(null);
        }
        else if(pleafPlus.match(/^[xyz]axis[0-9]*\.autorange$/)) {
            recordAlteredAxis(pleafPlus);
            Lib.nestedProperty(fullLayout, ptrunk + '._inputRange').set(null);
            var axFull = Lib.nestedProperty(fullLayout, ptrunk).get();
            if(axFull._inputDomain) {
                // if we're autoranging and this axis has a constrained domain,
                // reset it so we don't get locked into a shrunken size
                axFull._input.domain = axFull._inputDomain.slice();
            }
        }
        else if(pleafPlus.match(/^[xyz]axis[0-9]*\.domain(\[[0|1]\])?$/)) {
            Lib.nestedProperty(fullLayout, ptrunk + '._inputDomain').set(null);
        }

        // toggling axis type between log and linear: we need to convert
        // positions for components that are still using linearized values,
        // not data values like newer components.
        // previously we did this for log <-> not-log, but now only do it
        // for log <-> linear
        if(pleaf === 'type') {
            var ax = parentIn,
                toLog = parentFull.type === 'linear' && vi === 'log',
                fromLog = parentFull.type === 'log' && vi === 'linear';

            if(toLog || fromLog) {
                if(!ax || !ax.range) {
                    // 2D never gets here, but 3D does
                    // I don't think this is needed, but left here in case there
                    // are edge cases I'm not thinking of.
                    doextra(ptrunk + '.autorange', true);
                }
                else if(!parentFull.autorange) {
                    // toggling log without autorange: need to also recalculate ranges
                    // because log axes use linearized values for range endpoints
                    var r0 = ax.range[0],
                        r1 = ax.range[1];
                    if(toLog) {
                        // if both limits are negative, autorange
                        if(r0 <= 0 && r1 <= 0) {
                            doextra(ptrunk + '.autorange', true);
                        }
                        // if one is negative, set it 6 orders below the other.
                        if(r0 <= 0) r0 = r1 / 1e6;
                        else if(r1 <= 0) r1 = r0 / 1e6;
                        // now set the range values as appropriate
                        doextra(ptrunk + '.range[0]', Math.log(r0) / Math.LN10);
                        doextra(ptrunk + '.range[1]', Math.log(r1) / Math.LN10);
                    }
                    else {
                        doextra(ptrunk + '.range[0]', Math.pow(10, r0));
                        doextra(ptrunk + '.range[1]', Math.pow(10, r1));
                    }
                }
                else if(toLog) {
                    // just make sure the range is positive and in the right
                    // order, it'll get recalculated later
                    ax.range = (ax.range[1] > ax.range[0]) ? [1, 2] : [2, 1];
                }

                // Annotations and images also need to convert to/from linearized coords
                // Shapes do not need this :)
                Registry.getComponentMethod('annotations', 'convertCoords')(gd, parentFull, vi, doextra);
                Registry.getComponentMethod('images', 'convertCoords')(gd, parentFull, vi, doextra);
            }
            else {
                // any other type changes: the range from the previous type
                // will not make sense, so autorange it.
                doextra(ptrunk + '.autorange', true);
                doextra(ptrunk + '.range', null);
            }
            Lib.nestedProperty(fullLayout, ptrunk + '._inputRange').set(null);
        }
        else if(pleaf.match(cartesianConstants.AX_NAME_PATTERN)) {
            var fullProp = Lib.nestedProperty(fullLayout, ai).get(),
                newType = (vi || {}).type;

            // This can potentially cause strange behavior if the autotype is not
            // numeric (linear, because we don't auto-log) but the previous type
            // was log. That's a very strange edge case though
            if(!newType || newType === '-') newType = 'linear';
            Registry.getComponentMethod('annotations', 'convertCoords')(gd, fullProp, newType, doextra);
            Registry.getComponentMethod('images', 'convertCoords')(gd, fullProp, newType, doextra);
        }

        // alter gd.layout

        // collect array component edits for execution all together
        // so we can ensure consistent behavior adding/removing items
        // and order-independence for add/remove/edit all together in
        // one relayout call
        var containerArrayMatch = manageArrays.containerArrayMatch(ai);
        if(containerArrayMatch) {
            arrayStr = containerArrayMatch.array;
            i = containerArrayMatch.index;
            var propStr = containerArrayMatch.property;
            var componentArray = Lib.nestedProperty(layout, arrayStr);
            var obji = (componentArray || [])[i] || {};
            var objToAutorange = obji;

            var updateValObject = valObject || {editType: 'calc'};
            var checkForAutorange = updateValObject.editType.indexOf('calcIfAutorange') !== -1;

            if(i === '') {
                // replacing the entire array - too many possibilities, just recalc
                if(checkForAutorange) flags.calc = true;
                else editTypes.update(flags, updateValObject);
                checkForAutorange = false; // clear this, we're already doing a recalc
            }
            else if(propStr === '') {
                // special handling of undoit if we're adding or removing an element
                // ie 'annotations[2]' which can be {...} (add) or null (remove)
                objToAutorange = vi;
                if(manageArrays.isAddVal(vi)) {
                    undoit[ai] = null;
                }
                else if(manageArrays.isRemoveVal(vi)) {
                    undoit[ai] = obji;
                    objToAutorange = obji;
                }
                else Lib.warn('unrecognized full object value', aobj);
            }

            if(checkForAutorange && (refAutorange(objToAutorange, 'x') || refAutorange(objToAutorange, 'y'))) {
                flags.calc = true;
            }
            else editTypes.update(flags, updateValObject);


            // prepare the edits object we'll send to applyContainerArrayChanges
            if(!arrayEdits[arrayStr]) arrayEdits[arrayStr] = {};
            var objEdits = arrayEdits[arrayStr][i];
            if(!objEdits) objEdits = arrayEdits[arrayStr][i] = {};
            objEdits[propStr] = vi;

            delete aobj[ai];
        }
        // handle axis reversal explicitly, as there's no 'reverse' attribute
        else if(pleaf === 'reverse') {
            if(parentIn.range) parentIn.range.reverse();
            else {
                doextra(ptrunk + '.autorange', true);
                parentIn.range = [1, 0];
            }

            if(parentFull.autorange) flags.calc = true;
            else flags.plot = true;
        }
        else {
            if(fullLayout._has('gl2d') &&
                (ai === 'dragmode' &&
                (vi === 'lasso' || vi === 'select') &&
                !(vOld === 'lasso' || vOld === 'select'))
            ) {
                flags.calc = true;
            }
            else if(valObject) editTypes.update(flags, valObject);
            else flags.calc = true;

            p.set(vi);
        }
    }

    // now we've collected component edits - execute them all together
    for(arrayStr in arrayEdits) {
        var finished = manageArrays.applyContainerArrayChanges(gd,
            Lib.nestedProperty(layout, arrayStr), arrayEdits[arrayStr], flags);
        if(!finished) flags.plot = true;
    }

    // figure out if we need to recalculate axis constraints
    var constraints = fullLayout._axisConstraintGroups;
    for(axId in rangesAltered) {
        for(i = 0; i < constraints.length; i++) {
            var group = constraints[i];
            if(group[axId]) {
                // Always recalc if we're changing constrained ranges.
                // Otherwise it's possible to violate the constraints by
                // specifying arbitrary ranges for all axes in the group.
                // this way some ranges may expand beyond what's specified,
                // as they do at first draw, to satisfy the constraints.
                flags.calc = true;
                for(var groupAxId in group) {
                    if(!rangesAltered[groupAxId]) {
                        axisIds.getFromId(gd, groupAxId)._constraintShrinkable = true;
                    }
                }
            }
        }
    }

    var oldWidth = fullLayout.width,
        oldHeight = fullLayout.height;

    // calculate autosizing
    if(gd.layout.autosize) Plots.plotAutoSize(gd, gd.layout, fullLayout);

    // avoid unnecessary redraws
    var hasSizechanged = aobj.height || aobj.width ||
        (fullLayout.width !== oldWidth) ||
        (fullLayout.height !== oldHeight);

    if(hasSizechanged) flags.calc = true;

    if(flags.plot || flags.calc) {
        flags.layoutReplot = true;
    }

    // now all attribute mods are done, as are
    // redo and undo so we can save them

    return {
        flags: flags,
        undoit: undoit,
        redoit: redoit,
        eventData: Lib.extendDeep({}, redoit)
    };
}

/**
 * update: update trace and layout attributes of an existing plot
 *
 * @param {String | HTMLDivElement} gd
 *  the id or DOM element of the graph container div
 * @param {Object} traceUpdate
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  corresponding to updates in the plot's traces
 * @param {Object} layoutUpdate
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  corresponding to updates in the plot's layout
 * @param {Number[] | Number} [traces]
 *  integer or array of integers for the traces to alter (all if omitted)
 *
 */
Plotly.update = function update(gd, traceUpdate, layoutUpdate, _traces) {
    gd = Lib.getGraphDiv(gd);
    helpers.clearPromiseQueue(gd);

    if(gd.framework && gd.framework.isPolar) {
        return Promise.resolve(gd);
    }

    if(!Lib.isPlainObject(traceUpdate)) traceUpdate = {};
    if(!Lib.isPlainObject(layoutUpdate)) layoutUpdate = {};

    if(Object.keys(traceUpdate).length) gd.changed = true;
    if(Object.keys(layoutUpdate).length) gd.changed = true;

    var traces = helpers.coerceTraceIndices(gd, _traces);

    var restyleSpecs = _restyle(gd, Lib.extendFlat({}, traceUpdate), traces),
        restyleFlags = restyleSpecs.flags;

    var relayoutSpecs = _relayout(gd, Lib.extendFlat({}, layoutUpdate)),
        relayoutFlags = relayoutSpecs.flags;

    // clear calcdata and/or axis types if required
    if(restyleFlags.clearCalc || relayoutFlags.calc) gd.calcdata = undefined;
    if(restyleFlags.clearAxisTypes) helpers.clearAxisTypes(gd, traces, layoutUpdate);

    // fill in redraw sequence
    var seq = [];

    if(restyleFlags.fullReplot && relayoutFlags.layoutReplot) {
        var data = gd.data,
            layout = gd.layout;

        // clear existing data/layout on gd
        // so that Plotly.plot doesn't try to extend them
        gd.data = undefined;
        gd.layout = undefined;

        seq.push(function() { return Plotly.plot(gd, data, layout); });
    }
    else if(restyleFlags.fullReplot) {
        seq.push(Plotly.plot);
    }
    else if(relayoutFlags.layoutReplot) {
        seq.push(subroutines.layoutReplot);
    }
    else {
        seq.push(Plots.previousPromises);
        Plots.supplyDefaults(gd);

        if(restyleFlags.style) seq.push(subroutines.doTraceStyle);
        if(restyleFlags.colorbars) seq.push(subroutines.doColorBars);
        if(relayoutFlags.legend) seq.push(subroutines.doLegend);
        if(relayoutFlags.layoutstyle) seq.push(subroutines.layoutStyles);
        if(relayoutFlags.ticks) seq.push(subroutines.doTicksRelayout);
        if(relayoutFlags.modebar) seq.push(subroutines.doModeBar);
        if(relayoutFlags.camera) seq.push(subroutines.doCamera);
    }

    seq.push(Plots.rehover);

    Queue.add(gd,
        update, [gd, restyleSpecs.undoit, relayoutSpecs.undoit, restyleSpecs.traces],
        update, [gd, restyleSpecs.redoit, relayoutSpecs.redoit, restyleSpecs.traces]
    );

    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve(gd);

    return plotDone.then(function() {
        gd.emit('plotly_update', {
            data: restyleSpecs.eventData,
            layout: relayoutSpecs.eventData
        });

        return gd;
    });
};

/**
 * Animate to a frame, sequence of frame, frame group, or frame definition
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 *
 * @param {string or object or array of strings or array of objects} frameOrGroupNameOrFrameList
 *      a single frame, array of frames, or group to which to animate. The intent is
 *      inferred by the type of the input. Valid inputs are:
 *
 *      - string, e.g. 'groupname': animate all frames of a given `group` in the order
 *            in which they are defined via `Plotly.addFrames`.
 *
 *      - array of strings, e.g. ['frame1', frame2']: a list of frames by name to which
 *            to animate in sequence
 *
 *      - object: {data: ...}: a frame definition to which to animate. The frame is not
 *            and does not need to be added via `Plotly.addFrames`. It may contain any of
 *            the properties of a frame, including `data`, `layout`, and `traces`. The
 *            frame is used as provided and does not use the `baseframe` property.
 *
 *      - array of objects, e.g. [{data: ...}, {data: ...}]: a list of frame objects,
 *            each following the same rules as a single `object`.
 *
 * @param {object} animationOpts
 *      configuration for the animation
 */
Plotly.animate = function(gd, frameOrGroupNameOrFrameList, animationOpts) {
    gd = Lib.getGraphDiv(gd);

    if(!Lib.isPlotDiv(gd)) {
        throw new Error(
            'This element is not a Plotly plot: ' + gd + '. It\'s likely that you\'ve failed ' +
            'to create a plot before animating it. For more details, see ' +
            'https://plot.ly/javascript/animations/'
        );
    }

    var trans = gd._transitionData;

    // This is the queue of frames that will be animated as soon as possible. They
    // are popped immediately upon the *start* of a transition:
    if(!trans._frameQueue) {
        trans._frameQueue = [];
    }

    animationOpts = Plots.supplyAnimationDefaults(animationOpts);
    var transitionOpts = animationOpts.transition;
    var frameOpts = animationOpts.frame;

    // Since frames are popped immediately, an empty queue only means all frames have
    // *started* to transition, not that the animation is complete. To solve that,
    // track a separate counter that increments at the same time as frames are added
    // to the queue, but decrements only when the transition is complete.
    if(trans._frameWaitingCnt === undefined) {
        trans._frameWaitingCnt = 0;
    }

    function getTransitionOpts(i) {
        if(Array.isArray(transitionOpts)) {
            if(i >= transitionOpts.length) {
                return transitionOpts[0];
            } else {
                return transitionOpts[i];
            }
        } else {
            return transitionOpts;
        }
    }

    function getFrameOpts(i) {
        if(Array.isArray(frameOpts)) {
            if(i >= frameOpts.length) {
                return frameOpts[0];
            } else {
                return frameOpts[i];
            }
        } else {
            return frameOpts;
        }
    }

    // Execute a callback after the wrapper function has been called n times.
    // This is used to defer the resolution until a transition has resovled *and*
    // the frame has completed. If it's not done this way, then we get a race
    // condition in which the animation might resolve before a transition is complete
    // or vice versa.
    function callbackOnNthTime(cb, n) {
        var cnt = 0;
        return function() {
            if(cb && ++cnt === n) {
                return cb();
            }
        };
    }

    return new Promise(function(resolve, reject) {
        function discardExistingFrames() {
            if(trans._frameQueue.length === 0) {
                return;
            }

            while(trans._frameQueue.length) {
                var next = trans._frameQueue.pop();
                if(next.onInterrupt) {
                    next.onInterrupt();
                }
            }

            gd.emit('plotly_animationinterrupted', []);
        }

        function queueFrames(frameList) {
            if(frameList.length === 0) return;

            for(var i = 0; i < frameList.length; i++) {
                var computedFrame;

                if(frameList[i].type === 'byname') {
                    // If it's a named frame, compute it:
                    computedFrame = Plots.computeFrame(gd, frameList[i].name);
                } else {
                    // Otherwise we must have been given a simple object, so treat
                    // the input itself as the computed frame.
                    computedFrame = frameList[i].data;
                }

                var frameOpts = getFrameOpts(i);
                var transitionOpts = getTransitionOpts(i);

                // It doesn't make much sense for the transition duration to be greater than
                // the frame duration, so limit it:
                transitionOpts.duration = Math.min(transitionOpts.duration, frameOpts.duration);

                var nextFrame = {
                    frame: computedFrame,
                    name: frameList[i].name,
                    frameOpts: frameOpts,
                    transitionOpts: transitionOpts,
                };
                if(i === frameList.length - 1) {
                    // The last frame in this .animate call stores the promise resolve
                    // and reject callbacks. This is how we ensure that the animation
                    // loop (which may exist as a result of a *different* .animate call)
                    // still resolves or rejecdts this .animate call's promise. once it's
                    // complete.
                    nextFrame.onComplete = callbackOnNthTime(resolve, 2);
                    nextFrame.onInterrupt = reject;
                }

                trans._frameQueue.push(nextFrame);
            }

            // Set it as never having transitioned to a frame. This will cause the animation
            // loop to immediately transition to the next frame (which, for immediate mode,
            // is the first frame in the list since all others would have been discarded
            // below)
            if(animationOpts.mode === 'immediate') {
                trans._lastFrameAt = -Infinity;
            }

            // Only it's not already running, start a RAF loop. This could be avoided in the
            // case that there's only one frame, but it significantly complicated the logic
            // and only sped things up by about 5% or so for a lorenz attractor simulation.
            // It would be a fine thing to implement, but the benefit of that optimization
            // doesn't seem worth the extra complexity.
            if(!trans._animationRaf) {
                beginAnimationLoop();
            }
        }

        function stopAnimationLoop() {
            gd.emit('plotly_animated');

            // Be sure to unset also since it's how we know whether a loop is already running:
            window.cancelAnimationFrame(trans._animationRaf);
            trans._animationRaf = null;
        }

        function nextFrame() {
            if(trans._currentFrame && trans._currentFrame.onComplete) {
                // Execute the callback and unset it to ensure it doesn't
                // accidentally get called twice
                trans._currentFrame.onComplete();
            }

            var newFrame = trans._currentFrame = trans._frameQueue.shift();

            if(newFrame) {
                // Since it's sometimes necessary to do deep digging into frame data,
                // we'll consider it not 100% impossible for nulls or numbers to sneak through,
                // so check when casting the name, just to be absolutely certain:
                var stringName = newFrame.name ? newFrame.name.toString() : null;
                gd._fullLayout._currentFrame = stringName;

                trans._lastFrameAt = Date.now();
                trans._timeToNext = newFrame.frameOpts.duration;

                // This is simply called and it's left to .transition to decide how to manage
                // interrupting current transitions. That means we don't need to worry about
                // how it resolves or what happens after this:
                Plots.transition(gd,
                    newFrame.frame.data,
                    newFrame.frame.layout,
                    helpers.coerceTraceIndices(gd, newFrame.frame.traces),
                    newFrame.frameOpts,
                    newFrame.transitionOpts
                ).then(function() {
                    if(newFrame.onComplete) {
                        newFrame.onComplete();
                    }

                });

                gd.emit('plotly_animatingframe', {
                    name: stringName,
                    frame: newFrame.frame,
                    animation: {
                        frame: newFrame.frameOpts,
                        transition: newFrame.transitionOpts,
                    }
                });
            } else {
                // If there are no more frames, then stop the RAF loop:
                stopAnimationLoop();
            }
        }

        function beginAnimationLoop() {
            gd.emit('plotly_animating');

            // If no timer is running, then set last frame = long ago so that the next
            // frame is immediately transitioned:
            trans._lastFrameAt = -Infinity;
            trans._timeToNext = 0;
            trans._runningTransitions = 0;
            trans._currentFrame = null;

            var doFrame = function() {
                // This *must* be requested before nextFrame since nextFrame may decide
                // to cancel it if there's nothing more to animated:
                trans._animationRaf = window.requestAnimationFrame(doFrame);

                // Check if we're ready for a new frame:
                if(Date.now() - trans._lastFrameAt > trans._timeToNext) {
                    nextFrame();
                }
            };

            doFrame();
        }

        // This is an animate-local counter that helps match up option input list
        // items with the particular frame.
        var configCounter = 0;
        function setTransitionConfig(frame) {
            if(Array.isArray(transitionOpts)) {
                if(configCounter >= transitionOpts.length) {
                    frame.transitionOpts = transitionOpts[configCounter];
                } else {
                    frame.transitionOpts = transitionOpts[0];
                }
            } else {
                frame.transitionOpts = transitionOpts;
            }
            configCounter++;
            return frame;
        }

        // Disambiguate what's sort of frames have been received
        var i, frame;
        var frameList = [];
        var allFrames = frameOrGroupNameOrFrameList === undefined || frameOrGroupNameOrFrameList === null;
        var isFrameArray = Array.isArray(frameOrGroupNameOrFrameList);
        var isSingleFrame = !allFrames && !isFrameArray && Lib.isPlainObject(frameOrGroupNameOrFrameList);

        if(isSingleFrame) {
            // In this case, a simple object has been passed to animate.
            frameList.push({
                type: 'object',
                data: setTransitionConfig(Lib.extendFlat({}, frameOrGroupNameOrFrameList))
            });
        } else if(allFrames || ['string', 'number'].indexOf(typeof frameOrGroupNameOrFrameList) !== -1) {
            // In this case, null or undefined has been passed so that we want to
            // animate *all* currently defined frames
            for(i = 0; i < trans._frames.length; i++) {
                frame = trans._frames[i];

                if(!frame) continue;

                if(allFrames || String(frame.group) === String(frameOrGroupNameOrFrameList)) {
                    frameList.push({
                        type: 'byname',
                        name: String(frame.name),
                        data: setTransitionConfig({name: frame.name})
                    });
                }
            }
        } else if(isFrameArray) {
            for(i = 0; i < frameOrGroupNameOrFrameList.length; i++) {
                var frameOrName = frameOrGroupNameOrFrameList[i];
                if(['number', 'string'].indexOf(typeof frameOrName) !== -1) {
                    frameOrName = String(frameOrName);
                    // In this case, there's an array and this frame is a string name:
                    frameList.push({
                        type: 'byname',
                        name: frameOrName,
                        data: setTransitionConfig({name: frameOrName})
                    });
                } else if(Lib.isPlainObject(frameOrName)) {
                    frameList.push({
                        type: 'object',
                        data: setTransitionConfig(Lib.extendFlat({}, frameOrName))
                    });
                }
            }
        }

        // Verify that all of these frames actually exist; return and reject if not:
        for(i = 0; i < frameList.length; i++) {
            frame = frameList[i];
            if(frame.type === 'byname' && !trans._frameHash[frame.data.name]) {
                Lib.warn('animate failure: frame not found: "' + frame.data.name + '"');
                reject();
                return;
            }
        }

        // If the mode is either next or immediate, then all currently queued frames must
        // be dumped and the corresponding .animate promises rejected.
        if(['next', 'immediate'].indexOf(animationOpts.mode) !== -1) {
            discardExistingFrames();
        }

        if(animationOpts.direction === 'reverse') {
            frameList.reverse();
        }

        var currentFrame = gd._fullLayout._currentFrame;
        if(currentFrame && animationOpts.fromcurrent) {
            var idx = -1;
            for(i = 0; i < frameList.length; i++) {
                frame = frameList[i];
                if(frame.type === 'byname' && frame.name === currentFrame) {
                    idx = i;
                    break;
                }
            }

            if(idx > 0 && idx < frameList.length - 1) {
                var filteredFrameList = [];
                for(i = 0; i < frameList.length; i++) {
                    frame = frameList[i];
                    if(frameList[i].type !== 'byname' || i > idx) {
                        filteredFrameList.push(frame);
                    }
                }
                frameList = filteredFrameList;
            }
        }

        if(frameList.length > 0) {
            queueFrames(frameList);
        } else {
            // This is the case where there were simply no frames. It's a little strange
            // since there's not much to do:
            gd.emit('plotly_animated');
            resolve();
        }
    });
};

/**
 * Register new frames
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 *
 * @param {array of objects} frameList
 *      list of frame definitions, in which each object includes any of:
 *      - name: {string} name of frame to add
 *      - data: {array of objects} trace data
 *      - layout {object} layout definition
 *      - traces {array} trace indices
 *      - baseframe {string} name of frame from which this frame gets defaults
 *
 *  @param {array of integers) indices
 *      an array of integer indices matching the respective frames in `frameList`. If not
 *      provided, an index will be provided in serial order. If already used, the frame
 *      will be overwritten.
 */
Plotly.addFrames = function(gd, frameList, indices) {
    gd = Lib.getGraphDiv(gd);

    var numericNameWarningCount = 0;

    if(frameList === null || frameList === undefined) {
        return Promise.resolve();
    }

    if(!Lib.isPlotDiv(gd)) {
        throw new Error(
            'This element is not a Plotly plot: ' + gd + '. It\'s likely that you\'ve failed ' +
            'to create a plot before adding frames. For more details, see ' +
            'https://plot.ly/javascript/animations/'
        );
    }

    var i, frame, j, idx;
    var _frames = gd._transitionData._frames;
    var _hash = gd._transitionData._frameHash;


    if(!Array.isArray(frameList)) {
        throw new Error('addFrames failure: frameList must be an Array of frame definitions' + frameList);
    }

    // Create a sorted list of insertions since we run into lots of problems if these
    // aren't in ascending order of index:
    //
    // Strictly for sorting. Make sure this is guaranteed to never collide with any
    // already-exisisting indices:
    var bigIndex = _frames.length + frameList.length * 2;

    var insertions = [];
    for(i = frameList.length - 1; i >= 0; i--) {
        if(!Lib.isPlainObject(frameList[i])) continue;

        var name = (_hash[frameList[i].name] || {}).name;
        var newName = frameList[i].name;

        if(name && newName && typeof newName === 'number' && _hash[name]) {
            numericNameWarningCount++;

            Lib.warn('addFrames: overwriting frame "' + _hash[name].name +
                '" with a frame whose name of type "number" also equates to "' +
                name + '". This is valid but may potentially lead to unexpected ' +
                'behavior since all plotly.js frame names are stored internally ' +
                'as strings.');

            if(numericNameWarningCount > 5) {
                Lib.warn('addFrames: This API call has yielded too many warnings. ' +
                    'For the rest of this call, further warnings about numeric frame ' +
                    'names will be suppressed.');
            }
        }

        insertions.push({
            frame: Plots.supplyFrameDefaults(frameList[i]),
            index: (indices && indices[i] !== undefined && indices[i] !== null) ? indices[i] : bigIndex + i
        });
    }

    // Sort this, taking note that undefined insertions end up at the end:
    insertions.sort(function(a, b) {
        if(a.index > b.index) return -1;
        if(a.index < b.index) return 1;
        return 0;
    });

    var ops = [];
    var revops = [];
    var frameCount = _frames.length;

    for(i = insertions.length - 1; i >= 0; i--) {
        frame = insertions[i].frame;

        if(typeof frame.name === 'number') {
            Lib.warn('Warning: addFrames accepts frames with numeric names, but the numbers are' +
                'implicitly cast to strings');

        }

        if(!frame.name) {
            // Repeatedly assign a default name, incrementing the counter each time until
            // we get a name that's not in the hashed lookup table:
            while(_hash[(frame.name = 'frame ' + gd._transitionData._counter++)]);
        }

        if(_hash[frame.name]) {
            // If frame is present, overwrite its definition:
            for(j = 0; j < _frames.length; j++) {
                if((_frames[j] || {}).name === frame.name) break;
            }
            ops.push({type: 'replace', index: j, value: frame});
            revops.unshift({type: 'replace', index: j, value: _frames[j]});
        } else {
            // Otherwise insert it at the end of the list:
            idx = Math.max(0, Math.min(insertions[i].index, frameCount));

            ops.push({type: 'insert', index: idx, value: frame});
            revops.unshift({type: 'delete', index: idx});
            frameCount++;
        }
    }

    var undoFunc = Plots.modifyFrames,
        redoFunc = Plots.modifyFrames,
        undoArgs = [gd, revops],
        redoArgs = [gd, ops];

    if(Queue) Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return Plots.modifyFrames(gd, ops);
};

/**
 * Delete frame
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 *
 * @param {array of integers} frameList
 *      list of integer indices of frames to be deleted
 */
Plotly.deleteFrames = function(gd, frameList) {
    gd = Lib.getGraphDiv(gd);

    if(!Lib.isPlotDiv(gd)) {
        throw new Error('This element is not a Plotly plot: ' + gd);
    }

    var i, idx;
    var _frames = gd._transitionData._frames;
    var ops = [];
    var revops = [];

    if(!frameList) {
        frameList = [];
        for(i = 0; i < _frames.length; i++) {
            frameList.push(i);
        }
    }

    frameList = frameList.slice(0);
    frameList.sort();

    for(i = frameList.length - 1; i >= 0; i--) {
        idx = frameList[i];
        ops.push({type: 'delete', index: idx});
        revops.unshift({type: 'insert', index: idx, value: _frames[idx]});
    }

    var undoFunc = Plots.modifyFrames,
        redoFunc = Plots.modifyFrames,
        undoArgs = [gd, revops],
        redoArgs = [gd, ops];

    if(Queue) Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return Plots.modifyFrames(gd, ops);
};

/**
 * Purge a graph container div back to its initial pre-Plotly.plot state
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 */
Plotly.purge = function purge(gd) {
    gd = Lib.getGraphDiv(gd);

    var fullLayout = gd._fullLayout || {},
        fullData = gd._fullData || [];

    // remove gl contexts
    Plots.cleanPlot([], {}, fullData, fullLayout);

    // purge properties
    Plots.purge(gd);

    // purge event emitter methods
    Events.purge(gd);

    // remove plot container
    if(fullLayout._container) fullLayout._container.remove();

    // in contrast to Plotly.Plots.purge which does NOT clear _context!
    delete gd._context;

    return gd;
};

// -------------------------------------------------------
// makePlotFramework: Create the plot container and axes
// -------------------------------------------------------
function makePlotFramework(gd) {
    var gd3 = d3.select(gd);
    var fullLayout = gd._fullLayout;

    // Plot container
    fullLayout._container = gd3.selectAll('.plot-container').data([0]);
    fullLayout._container.enter().insert('div', ':first-child')
        .classed('plot-container', true)
        .classed('plotly', true);

    // Make the svg container
    fullLayout._paperdiv = fullLayout._container.selectAll('.svg-container').data([0]);
    fullLayout._paperdiv.enter().append('div')
        .classed('svg-container', true)
        .style('position', 'relative');

    // Make the graph containers
    // start fresh each time we get here, so we know the order comes out
    // right, rather than enter/exit which can muck up the order
    // TODO: sort out all the ordering so we don't have to
    // explicitly delete anything
    fullLayout._glcontainer = fullLayout._paperdiv.selectAll('.gl-container')
        .data([0]);
    fullLayout._glcontainer.enter().append('div')
        .classed('gl-container', true);

    fullLayout._paperdiv.selectAll('.main-svg').remove();

    fullLayout._paper = fullLayout._paperdiv.insert('svg', ':first-child')
        .classed('main-svg', true);

    fullLayout._toppaper = fullLayout._paperdiv.append('svg')
        .classed('main-svg', true);

    if(!fullLayout._uid) {
        var otherUids = [];
        d3.selectAll('defs').each(function() {
            if(this.id) otherUids.push(this.id.split('-')[1]);
        });
        fullLayout._uid = Lib.randstr(otherUids);
    }

    fullLayout._paperdiv.selectAll('.main-svg')
        .attr(xmlnsNamespaces.svgAttrs);

    fullLayout._defs = fullLayout._paper.append('defs')
        .attr('id', 'defs-' + fullLayout._uid);

    fullLayout._clips = fullLayout._defs.append('g')
        .classed('clips', true);

    fullLayout._topdefs = fullLayout._toppaper.append('defs')
        .attr('id', 'topdefs-' + fullLayout._uid);

    fullLayout._topclips = fullLayout._topdefs.append('g')
        .classed('clips', true);

    fullLayout._bgLayer = fullLayout._paper.append('g')
        .classed('bglayer', true);

    fullLayout._draggers = fullLayout._paper.append('g')
        .classed('draglayer', true);

    // lower shape/image layer - note that this is behind
    // all subplots data/grids but above the backgrounds
    // except inset subplots, whose backgrounds are drawn
    // inside their own group so that they appear above
    // the data for the main subplot
    // lower shapes and images which are fully referenced to
    // a subplot still get drawn within the subplot's group
    // so they will work correctly on insets
    var layerBelow = fullLayout._paper.append('g')
        .classed('layer-below', true);
    fullLayout._imageLowerLayer = layerBelow.append('g')
        .classed('imagelayer', true);
    fullLayout._shapeLowerLayer = layerBelow.append('g')
        .classed('shapelayer', true);

    // single cartesian layer for the whole plot
    fullLayout._cartesianlayer = fullLayout._paper.append('g').classed('cartesianlayer', true);

    // single ternary layer for the whole plot
    fullLayout._ternarylayer = fullLayout._paper.append('g').classed('ternarylayer', true);

    // single geo layer for the whole plot
    fullLayout._geolayer = fullLayout._paper.append('g').classed('geolayer', true);

    // upper shape layer
    // (only for shapes to be drawn above the whole plot, including subplots)
    var layerAbove = fullLayout._paper.append('g')
        .classed('layer-above', true);
    fullLayout._imageUpperLayer = layerAbove.append('g')
        .classed('imagelayer', true);
    fullLayout._shapeUpperLayer = layerAbove.append('g')
        .classed('shapelayer', true);

    // single pie layer for the whole plot
    fullLayout._pielayer = fullLayout._paper.append('g').classed('pielayer', true);

    // fill in image server scrape-svg
    fullLayout._glimages = fullLayout._paper.append('g').classed('glimages', true);

    // lastly info (legend, annotations) and hover layers go on top
    // these are in a different svg element normally, but get collapsed into a single
    // svg when exporting (after inserting 3D)
    fullLayout._infolayer = fullLayout._toppaper.append('g').classed('infolayer', true);
    fullLayout._zoomlayer = fullLayout._toppaper.append('g').classed('zoomlayer', true);
    fullLayout._hoverlayer = fullLayout._toppaper.append('g').classed('hoverlayer', true);

    gd.emit('plotly_framework');
}

},{"../components/color":233,"../components/drawing":257,"../components/errorbars":263,"../constants/xmlns_namespaces":336,"../lib":353,"../lib/events":343,"../lib/queue":366,"../lib/svg_text_utils":375,"../plotly":391,"../plots/cartesian/axis_ids":399,"../plots/cartesian/constants":401,"../plots/cartesian/constraints":403,"../plots/cartesian/graph_interact":405,"../plots/plots":429,"../plots/polar":432,"../registry":436,"./edit_types":380,"./helpers":381,"./manage_arrays":382,"./plot_schema":385,"./subroutines":388,"d3":62,"fast-isnumeric":68,"has-hover":149}],384:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * This will be transferred over to gd and overridden by
 * config args to Plotly.plot.
 *
 * The defaults are the appropriate settings for plotly.js,
 * so we get the right experience without any config argument.
 */

module.exports = {

    // no interactivity, for export or image generation
    staticPlot: false,

    // we can edit titles, move annotations, etc - sets all pieces of `edits`
    // unless a separate `edits` config item overrides individual parts
    editable: false,
    edits: {
        // annotationPosition: the main anchor of the annotation, which is the
        // text (if no arrow) or the arrow (which drags the whole thing leaving
        // the arrow length & direction unchanged)
        annotationPosition: false,
        // just for annotations with arrows, change the length  and direction of the arrow
        annotationTail: false,
        annotationText: false,
        axisTitleText: false,
        colorbarPosition: false,
        colorbarTitleText: false,
        legendPosition: false,
        // edit the trace name fields from the legend
        legendText: false,
        shapePosition: false,
        // the global `layout.title`
        titleText: false
    },

    // DO autosize once regardless of layout.autosize
    // (use default width or height values otherwise)
    autosizable: false,

    // set the length of the undo/redo queue
    queueLength: 0,

    // if we DO autosize, do we fill the container or the screen?
    fillFrame: false,

    // if we DO autosize, set the frame margins in percents of plot size
    frameMargins: 0,

    // mousewheel or two-finger scroll zooms the plot
    scrollZoom: false,

    // double click interaction (false, 'reset', 'autosize' or 'reset+autosize')
    doubleClick: 'reset+autosize',

    // new users see some hints about interactivity
    showTips: true,

    // enable axis pan/zoom drag handles
    showAxisDragHandles: true,

    // enable direct range entry at the pan/zoom drag points (drag handles must be enabled above)
    showAxisRangeEntryBoxes: true,

    // link to open this plot in plotly
    showLink: false,

    // if we show a link, does it contain data or just link to a plotly file?
    sendData: true,

    // text appearing in the sendData link
    linkText: 'Edit chart',

    // false or function adding source(s) to linkText <text>
    showSources: false,

    // display the mode bar (true, false, or 'hover')
    displayModeBar: 'hover',

    // remove mode bar button by name
    // (see ./components/modebar/buttons.js for the list of names)
    modeBarButtonsToRemove: [],

    // add mode bar button using config objects
    // (see ./components/modebar/buttons.js for list of arguments)
    modeBarButtonsToAdd: [],

    // fully custom mode bar buttons as nested array,
    // where the outer arrays represents button groups, and
    // the inner arrays have buttons config objects or names of default buttons
    // (see ./components/modebar/buttons.js for more info)
    modeBarButtons: false,

    // add the plotly logo on the end of the mode bar
    displaylogo: true,

    // increase the pixel ratio for Gl plot images
    plotGlPixelRatio: 2,

    // background setting function
    // 'transparent' sets the background `layout.paper_color`
    // 'opaque' blends bg color with white ensuring an opaque background
    // or any other custom function of gd
    setBackground: 'transparent',

    // URL to topojson files used in geo charts
    topojsonURL: 'https://cdn.plot.ly/',

    // Mapbox access token (required to plot mapbox trace types)
    // If using an Mapbox Atlas server, set this option to '',
    // so that plotly.js won't attempt to authenticate to the public Mapbox server.
    mapboxAccessToken: null,

    // Turn all console logging on or off (errors will be thrown)
    // This should ONLY be set via Plotly.setPlotConfig
    logging: false,

    // Set global transform to be applied to all traces with no
    // specification needed
    globalTransforms: []
};

},{}],385:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../registry');
var Lib = require('../lib');

var baseAttributes = require('../plots/attributes');
var baseLayoutAttributes = require('../plots/layout_attributes');
var frameAttributes = require('../plots/frame_attributes');
var animationAttributes = require('../plots/animation_attributes');

// polar attributes are not part of the Registry yet
var polarAreaAttrs = require('../plots/polar/area_attributes');
var polarAxisAttrs = require('../plots/polar/axis_attributes');

var editTypes = require('./edit_types');

var extendFlat = Lib.extendFlat;
var extendDeepAll = Lib.extendDeepAll;

var IS_SUBPLOT_OBJ = '_isSubplotObj';
var IS_LINKED_TO_ARRAY = '_isLinkedToArray';
var ARRAY_ATTR_REGEXPS = '_arrayAttrRegexps';
var DEPRECATED = '_deprecated';
var UNDERSCORE_ATTRS = [IS_SUBPLOT_OBJ, IS_LINKED_TO_ARRAY, ARRAY_ATTR_REGEXPS, DEPRECATED];

exports.IS_SUBPLOT_OBJ = IS_SUBPLOT_OBJ;
exports.IS_LINKED_TO_ARRAY = IS_LINKED_TO_ARRAY;
exports.DEPRECATED = DEPRECATED;
exports.UNDERSCORE_ATTRS = UNDERSCORE_ATTRS;

/** Outputs the full plotly.js plot schema
 *
 * @return {object}
 *  - defs
 *  - traces
 *  - layout
 *  - transforms
 *  - frames
 *  - animations
 *  - config (coming soon ...)
 */
exports.get = function() {
    var traces = {};

    Registry.allTypes.concat('area').forEach(function(type) {
        traces[type] = getTraceAttributes(type);
    });

    var transforms = {};

    Object.keys(Registry.transformsRegistry).forEach(function(type) {
        transforms[type] = getTransformAttributes(type);
    });

    return {
        defs: {
            valObjects: Lib.valObjectMeta,
            metaKeys: UNDERSCORE_ATTRS.concat(['description', 'role', 'editType', 'impliedEdits']),
            editType: {
                traces: editTypes.traces,
                layout: editTypes.layout
            },
            impliedEdits: {
                
            }
        },

        traces: traces,
        layout: getLayoutAttributes(),

        transforms: transforms,

        frames: getFramesAttributes(),
        animation: formatAttributes(animationAttributes)
    };
};

/**
 * Crawl the attribute tree, recursively calling a callback function
 *
 * @param {object} attrs
 *  The node of the attribute tree (e.g. the root) from which recursion originates
 * @param {Function} callback
 *  A callback function with the signature:
 *          @callback callback
 *          @param {object} attr an attribute
 *          @param {String} attrName name string
 *          @param {object[]} attrs all the attributes
 *          @param {Number} level the recursion level, 0 at the root
 * @param {Number} [specifiedLevel]
 *  The level in the tree, in order to let the callback function detect descend or backtrack,
 *  typically unsupplied (implied 0), just used by the self-recursive call.
 *  The necessity arises because the tree traversal is not controlled by callback return values.
 *  The decision to not use callback return values for controlling tree pruning arose from
 *  the goal of keeping the crawler backwards compatible. Observe that one of the pruning conditions
 *  precedes the callback call.
 * @param {string} [attrString]
 *  the path to the current attribute, as an attribute string (ie 'marker.line')
 *  typically unsupplied, but you may supply it if you want to disambiguate which attrs tree you
 *  are starting from
 *
 * @return {object} transformOut
 *  copy of transformIn that contains attribute defaults
 */
exports.crawl = function(attrs, callback, specifiedLevel, attrString) {
    var level = specifiedLevel || 0;
    attrString = attrString || '';

    Object.keys(attrs).forEach(function(attrName) {
        var attr = attrs[attrName];

        if(UNDERSCORE_ATTRS.indexOf(attrName) !== -1) return;

        var fullAttrString = (attrString ? attrString + '.' : '') + attrName;
        callback(attr, attrName, attrs, level, fullAttrString);

        if(exports.isValObject(attr)) return;

        if(Lib.isPlainObject(attr) && attrName !== 'impliedEdits') {
            exports.crawl(attr, callback, level + 1, fullAttrString);
        }
    });
};

/** Is object a value object (or a container object)?
 *
 * @param {object} obj
 * @return {boolean}
 *  returns true for a valid value object and
 *  false for tree nodes in the attribute hierarchy
 */
exports.isValObject = function(obj) {
    return obj && obj.valType !== undefined;
};

/**
 * Find all data array attributes in a given trace object - including
 * `arrayOk` attributes.
 *
 * @param {object} trace
 *  full trace object that contains a reference to `_module.attributes`
 *
 * @return {array} arrayAttributes
 *  list of array attributes for the given trace
 */
exports.findArrayAttributes = function(trace) {
    var arrayAttributes = [];
    var stack = [];

    function callback(attr, attrName, attrs, level) {
        stack = stack.slice(0, level).concat([attrName]);

        var splittableAttr = (
            attr &&
            (attr.valType === 'data_array' || attr.arrayOk === true) &&
            !(stack[level - 1] === 'colorbar' && (attrName === 'ticktext' || attrName === 'tickvals'))
        );

        // Manually exclude 'colorbar.tickvals' and 'colorbar.ticktext' for now
        // which are declared as `valType: 'data_array'` but scale independently of
        // the coordinate arrays.
        //
        // Down the road, we might want to add a schema field (e.g `uncorrelatedArray: true`)
        // to distinguish attributes of the likes.

        if(!splittableAttr) return;

        var astr = toAttrString(stack);
        var val = Lib.nestedProperty(trace, astr).get();
        if(!Array.isArray(val)) return;

        arrayAttributes.push(astr);
    }

    function toAttrString(stack) {
        return stack.join('.');
    }

    exports.crawl(baseAttributes, callback);
    if(trace._module && trace._module.attributes) {
        exports.crawl(trace._module.attributes, callback);
    }

    if(trace.transforms) {
        var transforms = trace.transforms;

        for(var i = 0; i < transforms.length; i++) {
            var transform = transforms[i];
            var module = transform._module;

            if(module) {
                stack = ['transforms[' + i + ']'];

                exports.crawl(module.attributes, callback, 1);
            }
        }
    }

    // Look into the fullInput module attributes for array attributes
    // to make sure that 'custom' array attributes are detected.
    //
    // At the moment, we need this block to make sure that
    // ohlc and candlestick 'open', 'high', 'low', 'close' can be
    // used with filter and groupby transforms.
    if(trace._fullInput && trace._fullInput._module && trace._fullInput._module.attributes) {
        exports.crawl(trace._fullInput._module.attributes, callback);
        arrayAttributes = Lib.filterUnique(arrayAttributes);
    }

    return arrayAttributes;
};

/*
 * Find the valObject for one attribute in an existing trace
 *
 * @param {object} trace
 *  full trace object that contains a reference to `_module.attributes`
 * @param {object} parts
 *  an array of parts, like ['transforms', 1, 'value']
 *  typically from nestedProperty(...).parts
 *
 * @return {object|false}
 *  the valObject for this attribute, or the last found parent
 *  in some cases the innermost valObject will not exist, for example
 *  `valType: 'any'` attributes where we might set a part of the attribute.
 *  In that case, stop at the deepest valObject we *do* find.
 */
exports.getTraceValObject = function(trace, parts) {
    var head = parts[0];
    var i = 1; // index to start recursing from
    var moduleAttrs, valObject;

    if(head === 'transforms') {
        if(!Array.isArray(trace.transforms)) return false;
        var tNum = parts[1];
        if(!isIndex(tNum) || tNum >= trace.transforms.length) {
            return false;
        }
        moduleAttrs = (Registry.transformsRegistry[trace.transforms[tNum].type] || {}).attributes;
        valObject = moduleAttrs && moduleAttrs[parts[2]];
        i = 3; // start recursing only inside the transform
    }
    else if(trace.type === 'area') {
        valObject = polarAreaAttrs[head];
    }
    else {
        // first look in the module for this trace
        // components have already merged their trace attributes in here
        var _module = trace._module;
        if(!_module) _module = (Registry.modules[trace.type || baseAttributes.type.dflt] || {})._module;
        if(!_module) return false;

        moduleAttrs = _module.attributes;
        valObject = moduleAttrs && moduleAttrs[head];

        // then look in the subplot attributes
        if(!valObject) {
            var subplotModule = _module.basePlotModule;
            if(subplotModule && subplotModule.attributes) {
                valObject = subplotModule.attributes[head];
            }
        }

        // finally look in the global attributes
        if(!valObject) valObject = baseAttributes[head];
    }

    return recurseIntoValObject(valObject, parts, i);
};

/*
 * Find the valObject for one layout attribute
 *
 * @param {array} parts
 *  an array of parts, like ['annotations', 1, 'x']
 *  typically from nestedProperty(...).parts
 *
 * @return {object|false}
 *  the valObject for this attribute, or the last found parent
 *  in some cases the innermost valObject will not exist, for example
 *  `valType: 'any'` attributes where we might set a part of the attribute.
 *  In that case, stop at the deepest valObject we *do* find.
 */
exports.getLayoutValObject = function(fullLayout, parts) {
    var valObject = layoutHeadAttr(fullLayout, parts[0]);

    return recurseIntoValObject(valObject, parts, 1);
};

function layoutHeadAttr(fullLayout, head) {
    var i, key, _module, attributes;

    // look for attributes of the subplot types used on the plot
    var basePlotModules = fullLayout._basePlotModules;
    if(basePlotModules) {
        var out;
        for(i = 0; i < basePlotModules.length; i++) {
            _module = basePlotModules[i];
            if(_module.attrRegex && _module.attrRegex.test(head)) {
                // if a module defines overrides, these take precedence
                // initially this is to allow gl2d different editTypes from svg cartesian
                if(_module.layoutAttrOverrides) return _module.layoutAttrOverrides;

                // otherwise take the first attributes we find
                if(!out && _module.layoutAttributes) out = _module.layoutAttributes;
            }

            // a module can also override the behavior of base (and component) module layout attrs
            // again see gl2d for initial use case
            var baseOverrides = _module.baseLayoutAttrOverrides;
            if(baseOverrides && head in baseOverrides) return baseOverrides[head];
        }
        if(out) return out;
    }

    // look for layout attributes contributed by traces on the plot
    var modules = fullLayout._modules;
    if(modules) {
        for(i = 0; i < modules.length; i++) {
            attributes = modules[i].layoutAttributes;
            if(attributes && head in attributes) {
                return attributes[head];
            }
        }
    }

    /*
     * Next look in components.
     * Components that define a schema have already merged this into
     * base and subplot attribute defs, so ignore these.
     * Others (older style) all put all their attributes
     * inside a container matching the module `name`
     * eg `attributes` (array) or `legend` (object)
     */
    for(key in Registry.componentsRegistry) {
        _module = Registry.componentsRegistry[key];
        if(!_module.schema && (head === _module.name)) {
            return _module.layoutAttributes;
        }
    }

    if(head in baseLayoutAttributes) return baseLayoutAttributes[head];

    // Polar doesn't populate _modules or _basePlotModules
    // just fall back on these when the others fail
    if(head === 'radialaxis' || head === 'angularaxis') {
        return polarAxisAttrs[head];
    }
    return polarAxisAttrs.layout[head] || false;
}

function recurseIntoValObject(valObject, parts, i) {
    if(!valObject) return false;

    if(valObject._isLinkedToArray) {
        // skip array index, abort if we try to dive into an array without an index
        if(isIndex(parts[i])) i++;
        else if(i < parts.length) return false;
    }

    // now recurse as far as we can. Occasionally we have an attribute
    // setting an internal part below what's
    for(; i < parts.length; i++) {
        var newValObject = valObject[parts[i]];
        if(Lib.isPlainObject(newValObject)) valObject = newValObject;
        else break;

        if(i === parts.length - 1) break;

        if(valObject._isLinkedToArray) {
            i++;
            if(!isIndex(parts[i])) return false;
        }
        else if(valObject.valType === 'info_array') {
            i++;
            var index = parts[i];
            if(!isIndex(index) || index >= valObject.items.length) return false;
            valObject = valObject.items[index];
        }
    }

    return valObject;
}

function isIndex(val) {
    return val === Math.round(val) && val >= 0;
}

function getTraceAttributes(type) {
    var _module, basePlotModule;

    if(type === 'area') {
        _module = { attributes: polarAreaAttrs };
        basePlotModule = {};
    }
    else {
        _module = Registry.modules[type]._module,
        basePlotModule = _module.basePlotModule;
    }

    var attributes = {};

    // make 'type' the first attribute in the object
    attributes.type = null;

    // base attributes (same for all trace types)
    extendDeepAll(attributes, baseAttributes);

    // module attributes
    extendDeepAll(attributes, _module.attributes);

    // subplot attributes
    if(basePlotModule.attributes) {
        extendDeepAll(attributes, basePlotModule.attributes);
    }

    // 'type' gets overwritten by baseAttributes; reset it here
    attributes.type = type;

    var out = {
        meta: _module.meta || {},
        attributes: formatAttributes(attributes),
    };

    // trace-specific layout attributes
    if(_module.layoutAttributes) {
        var layoutAttributes = {};

        extendDeepAll(layoutAttributes, _module.layoutAttributes);
        out.layoutAttributes = formatAttributes(layoutAttributes);
    }

    return out;
}

function getLayoutAttributes() {
    var layoutAttributes = {};
    var key, _module;

    // global layout attributes
    extendDeepAll(layoutAttributes, baseLayoutAttributes);

    // add base plot module layout attributes
    for(key in Registry.subplotsRegistry) {
        _module = Registry.subplotsRegistry[key];

        if(!_module.layoutAttributes) continue;

        if(_module.name === 'cartesian') {
            handleBasePlotModule(layoutAttributes, _module, 'xaxis');
            handleBasePlotModule(layoutAttributes, _module, 'yaxis');
        }
        else {
            var astr = _module.attr === 'subplot' ? _module.name : _module.attr;

            handleBasePlotModule(layoutAttributes, _module, astr);
        }
    }

    // polar layout attributes
    layoutAttributes = assignPolarLayoutAttrs(layoutAttributes);

    // add registered components layout attributes
    for(key in Registry.componentsRegistry) {
        _module = Registry.componentsRegistry[key];
        var schema = _module.schema;

        /*
         * Components with defined schema have already been merged in at register time
         * but a few components define attributes that apply only to xaxis
         * not yaxis (rangeselector, rangeslider) - delete from y schema.
         * Note that the input attributes for xaxis/yaxis are the same object
         * so it's not possible to only add them to xaxis from the start.
         * If we ever have such asymmetry the other way, or anywhere else,
         * we will need to extend both this code and mergeComponentAttrsToSubplot
         * (which will not find yaxis only for example)
         */
        if(schema && (schema.subplots || schema.layout)) {
            var subplots = schema.subplots;
            if(subplots && subplots.xaxis && !subplots.yaxis) {
                for(var xkey in subplots.xaxis) delete layoutAttributes.yaxis[xkey];
            }
        }
        // older style without schema need to be explicitly merged in now
        else if(_module.layoutAttributes) {
            insertAttrs(layoutAttributes, _module.layoutAttributes, _module.name);
        }
    }

    return {
        layoutAttributes: formatAttributes(layoutAttributes)
    };
}

function getTransformAttributes(type) {
    var _module = Registry.transformsRegistry[type];
    var attributes = extendDeepAll({}, _module.attributes);

    // add registered components transform attributes
    Object.keys(Registry.componentsRegistry).forEach(function(k) {
        var _module = Registry.componentsRegistry[k];

        if(_module.schema && _module.schema.transforms && _module.schema.transforms[type]) {
            Object.keys(_module.schema.transforms[type]).forEach(function(v) {
                insertAttrs(attributes, _module.schema.transforms[type][v], v);
            });
        }
    });

    return {
        attributes: formatAttributes(attributes)
    };
}

function getFramesAttributes() {
    var attrs = {
        frames: Lib.extendDeepAll({}, frameAttributes)
    };

    formatAttributes(attrs);

    return attrs.frames;
}

function formatAttributes(attrs) {
    mergeValTypeAndRole(attrs);
    formatArrayContainers(attrs);

    return attrs;
}

function mergeValTypeAndRole(attrs) {

    function makeSrcAttr(attrName) {
        return {
            valType: 'string',
            
            
            editType: 'none'
        };
    }

    function callback(attr, attrName, attrs) {
        if(exports.isValObject(attr)) {
            if(attr.valType === 'data_array') {
                // all 'data_array' attrs have role 'data'
                attr.role = 'data';
                // all 'data_array' attrs have a corresponding 'src' attr
                attrs[attrName + 'src'] = makeSrcAttr(attrName);
            }
            else if(attr.arrayOk === true) {
                // all 'arrayOk' attrs have a corresponding 'src' attr
                attrs[attrName + 'src'] = makeSrcAttr(attrName);
            }
        }
        else if(Lib.isPlainObject(attr)) {
            // all attrs container objects get role 'object'
            attr.role = 'object';
        }
    }

    exports.crawl(attrs, callback);
}

function formatArrayContainers(attrs) {

    function callback(attr, attrName, attrs) {
        if(!attr) return;

        var itemName = attr[IS_LINKED_TO_ARRAY];

        if(!itemName) return;

        delete attr[IS_LINKED_TO_ARRAY];

        attrs[attrName] = { items: {} };
        attrs[attrName].items[itemName] = attr;
        attrs[attrName].role = 'object';
    }

    exports.crawl(attrs, callback);
}

function assignPolarLayoutAttrs(layoutAttributes) {
    extendFlat(layoutAttributes, {
        radialaxis: polarAxisAttrs.radialaxis,
        angularaxis: polarAxisAttrs.angularaxis
    });

    extendFlat(layoutAttributes, polarAxisAttrs.layout);

    return layoutAttributes;
}

function handleBasePlotModule(layoutAttributes, _module, astr) {
    var np = Lib.nestedProperty(layoutAttributes, astr),
        attrs = extendDeepAll({}, _module.layoutAttributes);

    attrs[IS_SUBPLOT_OBJ] = true;
    np.set(attrs);
}

function insertAttrs(baseAttrs, newAttrs, astr) {
    var np = Lib.nestedProperty(baseAttrs, astr);

    np.set(extendDeepAll(np.get() || {}, newAttrs));
}

},{"../lib":353,"../plots/animation_attributes":392,"../plots/attributes":394,"../plots/frame_attributes":421,"../plots/layout_attributes":427,"../plots/polar/area_attributes":430,"../plots/polar/axis_attributes":431,"../registry":436,"./edit_types":380}],386:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../registry');
var Lib = require('../lib');


module.exports = function register(_modules) {
    if(!_modules) {
        throw new Error('No argument passed to Plotly.register.');
    }
    else if(_modules && !Array.isArray(_modules)) {
        _modules = [_modules];
    }

    for(var i = 0; i < _modules.length; i++) {
        var newModule = _modules[i];

        if(!newModule) {
            throw new Error('Invalid module was attempted to be registered!');
        }

        switch(newModule.moduleType) {
            case 'trace':
                registerTraceModule(newModule);
                break;

            case 'transform':
                registerTransformModule(newModule);
                break;

            case 'component':
                registerComponentModule(newModule);
                break;

            default:
                throw new Error('Invalid module was attempted to be registered!');
        }
    }
};

function registerTraceModule(newModule) {
    Registry.register(newModule, newModule.name, newModule.categories, newModule.meta);

    if(!Registry.subplotsRegistry[newModule.basePlotModule.name]) {
        Registry.registerSubplot(newModule.basePlotModule);
    }
}

function registerTransformModule(newModule) {
    if(typeof newModule.name !== 'string') {
        throw new Error('Transform module *name* must be a string.');
    }

    var prefix = 'Transform module ' + newModule.name;

    var hasTransform = typeof newModule.transform === 'function',
        hasCalcTransform = typeof newModule.calcTransform === 'function';


    if(!hasTransform && !hasCalcTransform) {
        throw new Error(prefix + ' is missing a *transform* or *calcTransform* method.');
    }

    if(hasTransform && hasCalcTransform) {
        Lib.log([
            prefix + ' has both a *transform* and *calcTransform* methods.',
            'Please note that all *transform* methods are executed',
            'before all *calcTransform* methods.'
        ].join(' '));
    }

    if(!Lib.isPlainObject(newModule.attributes)) {
        Lib.log(prefix + ' registered without an *attributes* object.');
    }

    if(typeof newModule.supplyDefaults !== 'function') {
        Lib.log(prefix + ' registered without a *supplyDefaults* method.');
    }

    Registry.registerTransform(newModule);
}

function registerComponentModule(newModule) {
    if(typeof newModule.name !== 'string') {
        throw new Error('Component module *name* must be a string.');
    }

    Registry.registerComponent(newModule);
}

},{"../lib":353,"../registry":436}],387:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../plotly');
var Lib = require('../lib');

/**
 * Extends the plot config
 *
 * @param {object} configObj partial plot configuration object
 *      to extend the current plot configuration.
 *
 */
module.exports = function setPlotConfig(configObj) {
    return Lib.extendFlat(Plotly.defaultConfig, configObj);
};

},{"../lib":353,"../plotly":391}],388:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var Plotly = require('../plotly');
var Registry = require('../registry');
var Plots = require('../plots/plots');
var Lib = require('../lib');

var Color = require('../components/color');
var Drawing = require('../components/drawing');
var Titles = require('../components/titles');
var ModeBar = require('../components/modebar');
var initInteractions = require('../plots/cartesian/graph_interact');
var cartesianConstants = require('../plots/cartesian/constants');

exports.layoutStyles = function(gd) {
    return Lib.syncOrAsync([Plots.doAutoMargin, exports.lsInner], gd);
};

function overlappingDomain(xDomain, yDomain, domains) {
    for(var i = 0; i < domains.length; i++) {
        var existingX = domains[i][0],
            existingY = domains[i][1];

        if(existingX[0] >= xDomain[1] || existingX[1] <= xDomain[0]) {
            continue;
        }
        if(existingY[0] < yDomain[1] && existingY[1] > yDomain[0]) {
            return true;
        }
    }
    return false;
}

exports.lsInner = function(gd) {
    var fullLayout = gd._fullLayout;
    var gs = fullLayout._size;
    var pad = gs.p;
    var axList = Plotly.Axes.list(gd);

    // _has('cartesian') means SVG specifically, not GL2D - but GL2D
    // can still get here because it makes some of the SVG structure
    // for shared features like selections.
    var hasSVGCartesian = fullLayout._has('cartesian');
    var i;

    // clear axis line positions, to be set in the subplot loop below
    for(i = 0; i < axList.length; i++) axList[i]._linepositions = {};

    fullLayout._paperdiv
        .style({
            width: fullLayout.width + 'px',
            height: fullLayout.height + 'px'
        })
        .selectAll('.main-svg')
            .call(Drawing.setSize, fullLayout.width, fullLayout.height);

    gd._context.setBackground(gd, fullLayout.paper_bgcolor);

    var subplotSelection = fullLayout._paper.selectAll('g.subplot');

    // figure out which backgrounds we need to draw, and in which layers
    // to put them
    var lowerBackgroundIDs = [];
    var lowerDomains = [];
    subplotSelection.each(function(subplot) {
        var plotinfo = fullLayout._plots[subplot];

        if(plotinfo.mainplot) {
            // mainplot is a reference to the main plot this one is overlaid on
            // so if it exists, this is an overlaid plot and we don't need to
            // give it its own background
            if(plotinfo.bg) {
                plotinfo.bg.remove();
            }
            plotinfo.bg = undefined;
            return;
        }

        var xDomain = plotinfo.xaxis.domain;
        var yDomain = plotinfo.yaxis.domain;
        var plotgroupBgData = [];

        if(overlappingDomain(xDomain, yDomain, lowerDomains)) {
            plotgroupBgData = [0];
        }
        else {
            lowerBackgroundIDs.push(subplot);
            lowerDomains.push([xDomain, yDomain]);
        }

        // create the plot group backgrounds now, since
        // they're all independent selections
        var plotgroupBg = plotinfo.plotgroup.selectAll('.bg')
            .data(plotgroupBgData);

        plotgroupBg.enter().append('rect')
            .classed('bg', true);

        plotgroupBg.exit().remove();

        plotgroupBg.each(function() {
            plotinfo.bg = plotgroupBg;
            var pgNode = plotinfo.plotgroup.node();
            pgNode.insertBefore(this, pgNode.childNodes[0]);
        });
    });

    // now create all the lower-layer backgrounds at once now that
    // we have the list of subplots that need them
    var lowerBackgrounds = fullLayout._bgLayer.selectAll('.bg')
        .data(lowerBackgroundIDs);

    lowerBackgrounds.enter().append('rect')
        .classed('bg', true);

    lowerBackgrounds.exit().remove();

    lowerBackgrounds.each(function(subplot) {
        fullLayout._plots[subplot].bg = d3.select(this);
    });

    var freeFinished = {};
    subplotSelection.each(function(subplot) {
        var plotinfo = fullLayout._plots[subplot];
        var xa = plotinfo.xaxis;
        var ya = plotinfo.yaxis;

        // reset scale in case the margins have changed
        xa.setScale();
        ya.setScale();

        if(plotinfo.bg && hasSVGCartesian) {
            plotinfo.bg
                .call(Drawing.setRect,
                    xa._offset - pad, ya._offset - pad,
                    xa._length + 2 * pad, ya._length + 2 * pad)
                .call(Color.fill, fullLayout.plot_bgcolor)
                .style('stroke-width', 0);
        }

        // Clip so that data only shows up on the plot area.
        plotinfo.clipId = 'clip' + fullLayout._uid + subplot + 'plot';

        var plotClip = fullLayout._clips.selectAll('#' + plotinfo.clipId)
            .data([0]);

        plotClip.enter().append('clipPath')
            .attr({
                'class': 'plotclip',
                'id': plotinfo.clipId
            })
            .append('rect');

        plotClip.selectAll('rect')
            .attr({
                'width': xa._length,
                'height': ya._length
            });

        Drawing.setTranslate(plotinfo.plot, xa._offset, ya._offset);

        var plotClipId;
        var layerClipId;

        if(plotinfo._hasClipOnAxisFalse) {
            plotClipId = null;
            layerClipId = plotinfo.clipId;
        } else {
            plotClipId = plotinfo.clipId;
            layerClipId = null;
        }

        Drawing.setClipUrl(plotinfo.plot, plotClipId);

        for(i = 0; i < cartesianConstants.traceLayerClasses.length; i++) {
            var layer = cartesianConstants.traceLayerClasses[i];
            if(layer !== 'scatterlayer') {
                plotinfo.plot.selectAll('g.' + layer).call(Drawing.setClipUrl, layerClipId);
            }
        }

        // stash layer clipId value (null or same as clipId)
        // to DRY up Drawing.setClipUrl calls downstream
        plotinfo.layerClipId = layerClipId;

        var xIsFree = !xa._anchorAxis;
        var showFreeX = xIsFree && !freeFinished[xa._id];
        var showBottom = shouldShowLine(xa, ya, 'bottom');
        var showTop = shouldShowLine(xa, ya, 'top');

        var yIsFree = !ya._anchorAxis;
        var showFreeY = yIsFree && !freeFinished[ya._id];
        var showLeft = shouldShowLine(ya, xa, 'left');
        var showRight = shouldShowLine(ya, xa, 'right');

        var xlw = Drawing.crispRound(gd, xa.linewidth, 1);
        var ylw = Drawing.crispRound(gd, ya.linewidth, 1);

        /*
         * x lines get longer where they meet y lines, to make a crisp corner.
         * The x lines get the padding (margin.pad) plus the y line width to
         * fill up the corner nicely. Free x lines are excluded - they always
         * span exactly the data area of the plot
         *
         *  | XXXXX
         *  | XXXXX
         *  |
         *  +------
         *     x1
         *    -----
         *     x2
         */
        var leftYLineWidth = findCounterAxisLineWidth(gd, xa, ylw, showLeft, 'left', axList);
        var xLinesXLeft = (!xIsFree && leftYLineWidth) ?
            (-pad - leftYLineWidth) : 0;
        var rightYLineWidth = findCounterAxisLineWidth(gd, xa, ylw, showRight, 'right', axList);
        var xLinesXRight = xa._length + ((!xIsFree && rightYLineWidth) ?
            (pad + rightYLineWidth) : 0);
        var xLinesYFree = gs.h * (1 - (xa.position || 0)) + ((xlw / 2) % 1);
        var xLinesYBottom = ya._length + pad + xlw / 2;
        var xLinesYTop = -pad - xlw / 2;

        /*
         * y lines that meet x axes get longer only by margin.pad, because
         * the x axes fill in the corner space. Free y axes, like free x axes,
         * always span exactly the data area of the plot
         *
         *   |   | XXXX
         * y2| y1| XXXX
         *   |   | XXXX
         *       |
         *       +-----
         */
        var connectYBottom = !yIsFree && findCounterAxisLineWidth(
                gd, ya, xlw, showBottom, 'bottom', axList);
        var yLinesYBottom = ya._length + (connectYBottom ? pad : 0);
        var connectYTop = !yIsFree && findCounterAxisLineWidth(
                gd, ya, xlw, showTop, 'top', axList);
        var yLinesYTop = connectYTop ? -pad : 0;
        var yLinesXFree = gs.w * (ya.position || 0) + ((ylw / 2) % 1);
        var yLinesXLeft = -pad - ylw / 2;
        var yLinesXRight = xa._length + pad + ylw / 2;

        function xLinePath(y, showThis) {
            if(!showThis) return '';
            return 'M' + xLinesXLeft + ',' + y + 'H' + xLinesXRight;
        }

        function yLinePath(x, showThis) {
            if(!showThis) return '';
            return 'M' + x + ',' + yLinesYTop + 'V' + yLinesYBottom;
        }

        // save axis line positions for ticks, draggers, etc to reference
        // each subplot gets an entry:
        //    [left or bottom, right or top, free, main]
        // main is the position at which to draw labels and draggers, if any
        xa._linepositions[subplot] = [
            showBottom ? xLinesYBottom : undefined,
            showTop ? xLinesYTop : undefined,
            showFreeX ? xLinesYFree : undefined
        ];
        if(xa._anchorAxis === ya) {
            xa._linepositions[subplot][3] = xa.side === 'top' ?
                xLinesYTop : xLinesYBottom;
        }
        else if(showFreeX) {
            xa._linepositions[subplot][3] = xLinesYFree;
        }

        ya._linepositions[subplot] = [
            showLeft ? yLinesXLeft : undefined,
            showRight ? yLinesXRight : undefined,
            showFreeY ? yLinesXFree : undefined
        ];
        if(ya._anchorAxis === xa) {
            ya._linepositions[subplot][3] = ya.side === 'right' ?
                yLinesXRight : yLinesXLeft;
        }
        else if(showFreeY) {
            ya._linepositions[subplot][3] = yLinesXFree;
        }

        // translate all the extra stuff to have the
        // same origin as the plot area or axes
        var origin = 'translate(' + xa._offset + ',' + ya._offset + ')';
        var originX = origin;
        var originY = origin;
        if(showFreeX) {
            originX = 'translate(' + xa._offset + ',' + gs.t + ')';
            xLinesYTop += ya._offset - gs.t;
            xLinesYBottom += ya._offset - gs.t;
        }
        if(showFreeY) {
            originY = 'translate(' + gs.l + ',' + ya._offset + ')';
            yLinesXLeft += xa._offset - gs.l;
            yLinesXRight += xa._offset - gs.l;
        }

        if(hasSVGCartesian) {
            plotinfo.xlines
                .attr('transform', originX)
                .attr('d', (
                    xLinePath(xLinesYBottom, showBottom) +
                    xLinePath(xLinesYTop, showTop) +
                    xLinePath(xLinesYFree, showFreeX)) ||
                    // so it doesn't barf with no lines shown
                    'M0,0')
                .style('stroke-width', xlw + 'px')
                .call(Color.stroke, xa.showline ?
                    xa.linecolor : 'rgba(0,0,0,0)');
            plotinfo.ylines
                .attr('transform', originY)
                .attr('d', (
                    yLinePath(yLinesXLeft, showLeft) +
                    yLinePath(yLinesXRight, showRight) +
                    yLinePath(yLinesXFree, showFreeY)) ||
                    'M0,0')
                .style('stroke-width', ylw + 'px')
                .call(Color.stroke, ya.showline ?
                    ya.linecolor : 'rgba(0,0,0,0)');
        }

        plotinfo.xaxislayer.attr('transform', originX);
        plotinfo.yaxislayer.attr('transform', originY);
        plotinfo.gridlayer.attr('transform', origin);
        plotinfo.zerolinelayer.attr('transform', origin);
        plotinfo.draglayer.attr('transform', origin);

        // mark free axes as displayed, so we don't draw them again
        if(showFreeX) freeFinished[xa._id] = 1;
        if(showFreeY) freeFinished[ya._id] = 1;
    });

    Plotly.Axes.makeClipPaths(gd);
    exports.drawMainTitle(gd);
    ModeBar.manage(gd);

    return gd._promises.length && Promise.all(gd._promises);
};

function shouldShowLine(ax, counterAx, side) {
    return (ax._anchorAxis === counterAx && (ax.mirror || ax.side === side)) ||
        ax.mirror === 'all' || ax.mirror === 'allticks' ||
        (ax.mirrors && ax.mirrors[counterAx._id + side]);
}

function findCounterAxes(gd, ax, axList) {
    var counterAxes = [];
    var anchorAx = ax._anchorAxis;
    if(anchorAx) {
        var counterMain = anchorAx._mainAxis;
        if(counterAxes.indexOf(counterMain) === -1) {
            counterAxes.push(counterMain);
            for(var i = 0; i < axList.length; i++) {
                if(axList[i].overlaying === counterMain._id &&
                    counterAxes.indexOf(axList[i]) === -1
                ) {
                    counterAxes.push(axList[i]);
                }
            }
        }
    }
    return counterAxes;
}

function findLineWidth(gd, axes, side) {
    for(var i = 0; i < axes.length; i++) {
        var ax = axes[i];
        var anchorAx = ax._anchorAxis;
        if(anchorAx && shouldShowLine(ax, anchorAx, side)) {
            return Drawing.crispRound(gd, ax.linewidth);
        }
    }
}

function findCounterAxisLineWidth(gd, ax, subplotCounterLineWidth,
        subplotCounterIsShown, side, axList) {
    if(subplotCounterIsShown) return subplotCounterLineWidth;

    var i;

    // find all counteraxes for this one, then of these, find the
    // first one that has a visible line on this side
    var mainAxis = ax._mainAxis;
    var counterAxes = findCounterAxes(gd, mainAxis, axList);

    var lineWidth = findLineWidth(gd, counterAxes, side);
    if(lineWidth) return lineWidth;

    for(i = 0; i < axList.length; i++) {
        if(axList[i].overlaying === mainAxis._id) {
            counterAxes = findCounterAxes(gd, axList[i], axList);
            lineWidth = findLineWidth(gd, counterAxes, side);
            if(lineWidth) return lineWidth;
        }
    }
    return 0;
}

exports.drawMainTitle = function(gd) {
    var fullLayout = gd._fullLayout;

    Titles.draw(gd, 'gtitle', {
        propContainer: fullLayout,
        propName: 'title',
        dfltName: 'Plot',
        attributes: {
            x: fullLayout.width / 2,
            y: fullLayout._size.t / 2,
            'text-anchor': 'middle'
        }
    });
};

// First, see if we need to do arraysToCalcdata
// call it regardless of what change we made, in case
// supplyDefaults brought in an array that was already
// in gd.data but not in gd._fullData previously
exports.doTraceStyle = function(gd) {
    for(var i = 0; i < gd.calcdata.length; i++) {
        var cdi = gd.calcdata[i],
            _module = ((cdi[0] || {}).trace || {})._module || {},
            arraysToCalcdata = _module.arraysToCalcdata;

        if(arraysToCalcdata) arraysToCalcdata(cdi, cdi[0].trace);
    }

    Plots.style(gd);
    Registry.getComponentMethod('legend', 'draw')(gd);

    return Plots.previousPromises(gd);
};

exports.doColorBars = function(gd) {
    for(var i = 0; i < gd.calcdata.length; i++) {
        var cdi0 = gd.calcdata[i][0];

        if((cdi0.t || {}).cb) {
            var trace = cdi0.trace,
                cb = cdi0.t.cb;

            if(Registry.traceIs(trace, 'contour')) {
                cb.line({
                    width: trace.contours.showlines !== false ?
                        trace.line.width : 0,
                    dash: trace.line.dash,
                    color: trace.contours.coloring === 'line' ?
                        cb._opts.line.color : trace.line.color
                });
            }
            if(Registry.traceIs(trace, 'markerColorscale')) {
                cb.options(trace.marker.colorbar)();
            }
            else cb.options(trace.colorbar)();
        }
    }

    return Plots.previousPromises(gd);
};

// force plot() to redo the layout and replot with the modified layout
exports.layoutReplot = function(gd) {
    var layout = gd.layout;
    gd.layout = undefined;
    return Plotly.plot(gd, '', layout);
};

exports.doLegend = function(gd) {
    Registry.getComponentMethod('legend', 'draw')(gd);
    return Plots.previousPromises(gd);
};

exports.doTicksRelayout = function(gd) {
    Plotly.Axes.doTicks(gd, 'redraw');
    exports.drawMainTitle(gd);
    return Plots.previousPromises(gd);
};

exports.doModeBar = function(gd) {
    var fullLayout = gd._fullLayout;

    ModeBar.manage(gd);
    initInteractions(gd);

    for(var i = 0; i < fullLayout._basePlotModules.length; i++) {
        var updateFx = fullLayout._basePlotModules[i].updateFx;
        if(updateFx) updateFx(fullLayout);
    }


    return Plots.previousPromises(gd);
};

exports.doCamera = function(gd) {
    var fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d');

    for(var i = 0; i < sceneIds.length; i++) {
        var sceneLayout = fullLayout[sceneIds[i]],
            scene = sceneLayout._scene;

        scene.setCamera(sceneLayout.camera);
    }
};

},{"../components/color":233,"../components/drawing":257,"../components/modebar":294,"../components/titles":323,"../lib":353,"../plotly":391,"../plots/cartesian/constants":401,"../plots/cartesian/graph_interact":405,"../plots/plots":429,"../registry":436,"d3":62}],389:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Plotly = require('../plotly');
var Lib = require('../lib');

var helpers = require('../snapshot/helpers');
var toSVG = require('../snapshot/tosvg');
var svgToImg = require('../snapshot/svgtoimg');

var attrs = {
    format: {
        valType: 'enumerated',
        values: ['png', 'jpeg', 'webp', 'svg'],
        dflt: 'png',
        
    },
    width: {
        valType: 'number',
        min: 1,
        
    },
    height: {
        valType: 'number',
        min: 1,
        
    },
    scale: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
    },
    setBackground: {
        valType: 'any',
        dflt: false,
        
    },
    imageDataOnly: {
        valType: 'boolean',
        dflt: false,
        
    }
};

var IMAGE_URL_PREFIX = /^data:image\/\w+;base64,/;

/** Plotly.toImage
 *
 * @param {object | string | HTML div} gd
 *   can either be a data/layout/config object
 *   or an existing graph <div>
 *   or an id to an existing graph <div>
 * @param {object} opts (see above)
 * @return {promise}
 */
function toImage(gd, opts) {
    opts = opts || {};

    var data;
    var layout;
    var config;

    if(Lib.isPlainObject(gd)) {
        data = gd.data || [];
        layout = gd.layout || {};
        config = gd.config || {};
    } else {
        gd = Lib.getGraphDiv(gd);
        data = Lib.extendDeep([], gd.data);
        layout = Lib.extendDeep({}, gd.layout);
        config = gd._context;
    }

    function isImpliedOrValid(attr) {
        return !(attr in opts) || Lib.validate(opts[attr], attrs[attr]);
    }

    if(!isImpliedOrValid('width') || !isImpliedOrValid('height')) {
        throw new Error('Height and width should be pixel values.');
    }

    if(!isImpliedOrValid('format')) {
        throw new Error('Image format is not jpeg, png, svg or webp.');
    }

    var fullOpts = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts, fullOpts, attrs, attr, dflt);
    }

    var format = coerce('format');
    var width = coerce('width');
    var height = coerce('height');
    var scale = coerce('scale');
    var setBackground = coerce('setBackground');
    var imageDataOnly = coerce('imageDataOnly');

    // put the cloned div somewhere off screen before attaching to DOM
    var clonedGd = document.createElement('div');
    clonedGd.style.position = 'absolute';
    clonedGd.style.left = '-5000px';
    document.body.appendChild(clonedGd);

    // extend layout with image options
    var layoutImage = Lib.extendFlat({}, layout);
    if(width) layoutImage.width = width;
    if(height) layoutImage.height = height;

    // extend config for static plot
    var configImage = Lib.extendFlat({}, config, {
        staticPlot: true,
        setBackground: setBackground
    });

    var redrawFunc = helpers.getRedrawFunc(clonedGd);

    function wait() {
        return new Promise(function(resolve) {
            setTimeout(resolve, helpers.getDelay(clonedGd._fullLayout));
        });
    }

    function convert() {
        return new Promise(function(resolve, reject) {
            var svg = toSVG(clonedGd, format, scale);
            var width = clonedGd._fullLayout.width;
            var height = clonedGd._fullLayout.height;

            Plotly.purge(clonedGd);
            document.body.removeChild(clonedGd);

            if(format === 'svg') {
                if(imageDataOnly) {
                    return resolve(svg);
                } else {
                    return resolve('data:image/svg+xml,' + encodeURIComponent(svg));
                }
            }

            var canvas = document.createElement('canvas');
            canvas.id = Lib.randstr();

            svgToImg({
                format: format,
                width: width,
                height: height,
                scale: scale,
                canvas: canvas,
                svg: svg,
                // ask svgToImg to return a Promise
                //  rather than EventEmitter
                //  leave EventEmitter for backward
                //  compatibility
                promise: true
            })
            .then(resolve)
            .catch(reject);
        });
    }

    function urlToImageData(url) {
        if(imageDataOnly) {
            return url.replace(IMAGE_URL_PREFIX, '');
        } else {
            return url;
        }
    }

    return new Promise(function(resolve, reject) {
        Plotly.plot(clonedGd, data, layoutImage, configImage)
            .then(redrawFunc)
            .then(wait)
            .then(convert)
            .then(function(url) { resolve(urlToImageData(url)); })
            .catch(function(err) { reject(err); });
    });
}

module.exports = toImage;

},{"../lib":353,"../plotly":391,"../snapshot/helpers":440,"../snapshot/svgtoimg":442,"../snapshot/tosvg":444}],390:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


var Lib = require('../lib');
var Plots = require('../plots/plots');
var PlotSchema = require('./plot_schema');

var isPlainObject = Lib.isPlainObject;
var isArray = Array.isArray;


/**
 * Validate a data array and layout object.
 *
 * @param {array} data
 * @param {object} layout
 *
 * @return {array} array of error objects each containing:
 *  - {string} code
 *      error code ('object', 'array', 'schema', 'unused', 'invisible' or 'value')
 *  - {string} container
 *      container where the error occurs ('data' or 'layout')
 *  - {number} trace
 *      trace index of the 'data' container where the error occurs
 *  - {array} path
 *      nested path to the key that causes the error
 *  - {string} astr
 *      attribute string variant of 'path' compatible with Plotly.restyle and
 *      Plotly.relayout.
 *  - {string} msg
 *      error message (shown in console in logger config argument is enable)
 */
module.exports = function valiate(data, layout) {
    var schema = PlotSchema.get(),
        errorList = [],
        gd = {};

    var dataIn, layoutIn;

    if(isArray(data)) {
        gd.data = Lib.extendDeep([], data);
        dataIn = data;
    }
    else {
        gd.data = [];
        dataIn = [];
        errorList.push(format('array', 'data'));
    }

    if(isPlainObject(layout)) {
        gd.layout = Lib.extendDeep({}, layout);
        layoutIn = layout;
    }
    else {
        gd.layout = {};
        layoutIn = {};
        if(arguments.length > 1) {
            errorList.push(format('object', 'layout'));
        }
    }

    // N.B. dataIn and layoutIn are in general not the same as
    // gd.data and gd.layout after supplyDefaults as some attributes
    // in gd.data and gd.layout (still) get mutated during this step.

    Plots.supplyDefaults(gd);

    var dataOut = gd._fullData,
        len = dataIn.length;

    for(var i = 0; i < len; i++) {
        var traceIn = dataIn[i],
            base = ['data', i];

        if(!isPlainObject(traceIn)) {
            errorList.push(format('object', base));
            continue;
        }

        var traceOut = dataOut[i],
            traceType = traceOut.type,
            traceSchema = schema.traces[traceType].attributes;

        // PlotSchema does something fancy with trace 'type', reset it here
        // to make the trace schema compatible with Lib.validate.
        traceSchema.type = {
            valType: 'enumerated',
            values: [traceType]
        };

        if(traceOut.visible === false && traceIn.visible !== false) {
            errorList.push(format('invisible', base));
        }

        crawl(traceIn, traceOut, traceSchema, errorList, base);

        var transformsIn = traceIn.transforms,
            transformsOut = traceOut.transforms;

        if(transformsIn) {
            if(!isArray(transformsIn)) {
                errorList.push(format('array', base, ['transforms']));
            }

            base.push('transforms');

            for(var j = 0; j < transformsIn.length; j++) {
                var path = ['transforms', j],
                    transformType = transformsIn[j].type;

                if(!isPlainObject(transformsIn[j])) {
                    errorList.push(format('object', base, path));
                    continue;
                }

                var transformSchema = schema.transforms[transformType] ?
                    schema.transforms[transformType].attributes :
                    {};

                // add 'type' to transform schema to validate the transform type
                transformSchema.type = {
                    valType: 'enumerated',
                    values: Object.keys(schema.transforms)
                };

                crawl(transformsIn[j], transformsOut[j], transformSchema, errorList, base, path);
            }
        }
    }

    var layoutOut = gd._fullLayout,
        layoutSchema = fillLayoutSchema(schema, dataOut);

    crawl(layoutIn, layoutOut, layoutSchema, errorList, 'layout');

    // return undefined if no validation errors were found
    return (errorList.length === 0) ? void(0) : errorList;
};

function crawl(objIn, objOut, schema, list, base, path) {
    path = path || [];

    var keys = Object.keys(objIn);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        // transforms are handled separately
        if(k === 'transforms') continue;

        var p = path.slice();
        p.push(k);

        var valIn = objIn[k],
            valOut = objOut[k];

        var nestedSchema = getNestedSchema(schema, k),
            isInfoArray = (nestedSchema || {}).valType === 'info_array',
            isColorscale = (nestedSchema || {}).valType === 'colorscale';

        if(!isInSchema(schema, k)) {
            list.push(format('schema', base, p));
        }
        else if(isPlainObject(valIn) && isPlainObject(valOut)) {
            crawl(valIn, valOut, nestedSchema, list, base, p);
        }
        else if(nestedSchema.items && !isInfoArray && isArray(valIn)) {
            var items = nestedSchema.items,
                _nestedSchema = items[Object.keys(items)[0]],
                indexList = [];

            var j, _p;

            // loop over valOut items while keeping track of their
            // corresponding input container index (given by _index)
            for(j = 0; j < valOut.length; j++) {
                var _index = valOut[j]._index || j;

                _p = p.slice();
                _p.push(_index);

                if(isPlainObject(valIn[_index]) && isPlainObject(valOut[j])) {
                    indexList.push(_index);
                    crawl(valIn[_index], valOut[j], _nestedSchema, list, base, _p);
                }
            }

            // loop over valIn to determine where it went wrong for some items
            for(j = 0; j < valIn.length; j++) {
                _p = p.slice();
                _p.push(j);

                if(!isPlainObject(valIn[j])) {
                    list.push(format('object', base, _p, valIn[j]));
                }
                else if(indexList.indexOf(j) === -1) {
                    list.push(format('unused', base, _p));
                }
            }
        }
        else if(!isPlainObject(valIn) && isPlainObject(valOut)) {
            list.push(format('object', base, p, valIn));
        }
        else if(!isArray(valIn) && isArray(valOut) && !isInfoArray && !isColorscale) {
            list.push(format('array', base, p, valIn));
        }
        else if(!(k in objOut)) {
            list.push(format('unused', base, p, valIn));
        }
        else if(!Lib.validate(valIn, nestedSchema)) {
            list.push(format('value', base, p, valIn));
        }
        else if(nestedSchema.valType === 'enumerated' &&
            ((nestedSchema.coerceNumber && valIn !== +valOut) || valIn !== valOut)
        ) {
            list.push(format('dynamic', base, p, valIn, valOut));
        }
    }

    return list;
}

// the 'full' layout schema depends on the traces types presents
function fillLayoutSchema(schema, dataOut) {
    for(var i = 0; i < dataOut.length; i++) {
        var traceType = dataOut[i].type,
            traceLayoutAttr = schema.traces[traceType].layoutAttributes;

        if(traceLayoutAttr) {
            Lib.extendFlat(schema.layout.layoutAttributes, traceLayoutAttr);
        }
    }

    return schema.layout.layoutAttributes;
}

// validation error codes
var code2msgFunc = {
    object: function(base, astr) {
        var prefix;

        if(base === 'layout' && astr === '') prefix = 'The layout argument';
        else if(base[0] === 'data' && astr === '') {
            prefix = 'Trace ' + base[1] + ' in the data argument';
        }
        else prefix = inBase(base) + 'key ' + astr;

        return prefix + ' must be linked to an object container';
    },
    array: function(base, astr) {
        var prefix;

        if(base === 'data') prefix = 'The data argument';
        else prefix = inBase(base) + 'key ' + astr;

        return prefix + ' must be linked to an array container';
    },
    schema: function(base, astr) {
        return inBase(base) + 'key ' + astr + ' is not part of the schema';
    },
    unused: function(base, astr, valIn) {
        var target = isPlainObject(valIn) ? 'container' : 'key';

        return inBase(base) + target + ' ' + astr + ' did not get coerced';
    },
    dynamic: function(base, astr, valIn, valOut) {
        return [
            inBase(base) + 'key',
            astr,
            '(set to \'' + valIn + '\')',
            'got reset to',
            '\'' + valOut + '\'',
            'during defaults.'
        ].join(' ');
    },
    invisible: function(base) {
        return 'Trace ' + base[1] + ' got defaulted to be not visible';
    },
    value: function(base, astr, valIn) {
        return [
            inBase(base) + 'key ' + astr,
            'is set to an invalid value (' + valIn + ')'
        ].join(' ');
    }
};

function inBase(base) {
    if(isArray(base)) return 'In data trace ' + base[1] + ', ';

    return 'In ' + base + ', ';
}

function format(code, base, path, valIn, valOut) {
    path = path || '';

    var container, trace;

    // container is either 'data' or 'layout
    // trace is the trace index if 'data', null otherwise

    if(isArray(base)) {
        container = base[0];
        trace = base[1];
    }
    else {
        container = base;
        trace = null;
    }

    var astr = convertPathToAttributeString(path);
    var msg = code2msgFunc[code](base, astr, valIn, valOut);

    // log to console if logger config option is enabled
    Lib.log(msg);

    return {
        code: code,
        container: container,
        trace: trace,
        path: path,
        astr: astr,
        msg: msg
    };
}

function isInSchema(schema, key) {
    var parts = splitKey(key),
        keyMinusId = parts.keyMinusId,
        id = parts.id;

    if((keyMinusId in schema) && schema[keyMinusId]._isSubplotObj && id) {
        return true;
    }

    return (key in schema);
}

function getNestedSchema(schema, key) {
    var parts = splitKey(key);

    return schema[parts.keyMinusId];
}

var idRegex = Lib.counterRegex('([a-z]+)');

function splitKey(key) {
    var idMatch = key.match(idRegex);

    return {
        keyMinusId: idMatch && idMatch[1],
        id: idMatch && idMatch[2]
    };
}

function convertPathToAttributeString(path) {
    if(!isArray(path)) return String(path);

    var astr = '';

    for(var i = 0; i < path.length; i++) {
        var p = path[i];

        if(typeof p === 'number') {
            astr = astr.substr(0, astr.length - 1) + '[' + p + ']';
        }
        else {
            astr += p;
        }

        if(i < path.length - 1) astr += '.';
    }

    return astr;
}

},{"../lib":353,"../plots/plots":429,"./plot_schema":385}],391:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/*
 * Pack internal modules unto an object.
 *
 * This object is require'ed in as 'Plotly' in numerous src and test files.
 * Require'ing 'Plotly' bypasses circular dependencies.
 *
 * Future development should move away from this pattern.
 *
 */

// configuration
exports.defaultConfig = require('./plot_api/plot_config');

// plots
exports.Plots = require('./plots/plots');
exports.Axes = require('./plots/cartesian/axes');

// components
exports.ModeBar = require('./components/modebar');

// plot api
require('./plot_api/plot_api');

},{"./components/modebar":294,"./plot_api/plot_api":383,"./plot_api/plot_config":384,"./plots/cartesian/axes":396,"./plots/plots":429}],392:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    mode: {
        valType: 'enumerated',
        dflt: 'afterall',
        
        values: ['immediate', 'next', 'afterall'],
        
    },
    direction: {
        valType: 'enumerated',
        
        values: ['forward', 'reverse'],
        dflt: 'forward',
        
    },
    fromcurrent: {
        valType: 'boolean',
        dflt: false,
        
        
    },
    frame: {
        duration: {
            valType: 'number',
            
            min: 0,
            dflt: 500,
            
        },
        redraw: {
            valType: 'boolean',
            
            dflt: true,
            
        },
    },
    transition: {
        duration: {
            valType: 'number',
            
            min: 0,
            dflt: 500,
            
        },
        easing: {
            valType: 'enumerated',
            dflt: 'cubic-in-out',
            values: [
                'linear',
                'quad',
                'cubic',
                'sin',
                'exp',
                'circle',
                'elastic',
                'back',
                'bounce',
                'linear-in',
                'quad-in',
                'cubic-in',
                'sin-in',
                'exp-in',
                'circle-in',
                'elastic-in',
                'back-in',
                'bounce-in',
                'linear-out',
                'quad-out',
                'cubic-out',
                'sin-out',
                'exp-out',
                'circle-out',
                'elastic-out',
                'back-out',
                'bounce-out',
                'linear-in-out',
                'quad-in-out',
                'cubic-in-out',
                'sin-in-out',
                'exp-in-out',
                'circle-in-out',
                'elastic-in-out',
                'back-in-out',
                'bounce-in-out'
            ],
            
            
        },
    }
};

},{}],393:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');


/** Convenience wrapper for making array container logic DRY and consistent
 *
 * @param {object} parentObjIn
 *  user input object where the container in question is linked
 *  (i.e. either a user trace object or the user layout object)
 *
 * @param {object} parentObjOut
 *  full object where the coerced container will be linked
 *  (i.e. either a full trace object or the full layout object)
 *
 * @param {object} opts
 *  options object:
 *   - name {string}
 *      name of the key linking the container in question
 *   - handleItemDefaults {function}
 *      defaults method to be called on each item in the array container in question
 *
 *      Its arguments are:
 *          - itemIn {object} item in user layout
 *          - itemOut {object} item in full layout
 *          - parentObj {object} (as in closure)
 *          - opts {object} (as in closure)
 *          - itemOpts {object}
 *              - itemIsNotPlainObject {boolean}
 * N.B.
 *
 *  - opts is passed to handleItemDefaults so it can also store
 *    links to supplementary data (e.g. fullData for layout components)
 *
 */
module.exports = function handleArrayContainerDefaults(parentObjIn, parentObjOut, opts) {
    var name = opts.name;

    var previousContOut = parentObjOut[name];

    var contIn = Lib.isArray(parentObjIn[name]) ? parentObjIn[name] : [],
        contOut = parentObjOut[name] = [],
        i;

    for(i = 0; i < contIn.length; i++) {
        var itemIn = contIn[i],
            itemOut = {},
            itemOpts = {};

        if(!Lib.isPlainObject(itemIn)) {
            itemOpts.itemIsNotPlainObject = true;
            itemIn = {};
        }

        opts.handleItemDefaults(itemIn, itemOut, parentObjOut, opts, itemOpts);

        itemOut._input = itemIn;
        itemOut._index = i;

        contOut.push(itemOut);
    }

    // in case this array gets its defaults rebuilt independent of the whole layout,
    // relink the private keys just for this array.
    if(Lib.isArray(previousContOut)) {
        var len = Math.min(previousContOut.length, contOut.length);
        for(i = 0; i < len; i++) {
            Lib.relinkPrivateKeys(contOut[i], previousContOut[i]);
        }
    }
};

},{"../lib":353}],394:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fxAttrs = require('../components/fx/attributes');

module.exports = {
    type: {
        valType: 'enumerated',
        
        values: [],     // listed dynamically
        dflt: 'scatter',
        editType: 'calc+clearAxisTypes'
    },
    visible: {
        valType: 'enumerated',
        values: [true, false, 'legendonly'],
        
        dflt: true,
        editType: 'calc',
        
    },
    showlegend: {
        valType: 'boolean',
        
        dflt: true,
        editType: 'style',
        
    },
    legendgroup: {
        valType: 'string',
        
        dflt: '',
        editType: 'style',
        
    },
    opacity: {
        valType: 'number',
        
        min: 0,
        max: 1,
        dflt: 1,
        editType: 'style',
        
    },
    name: {
        valType: 'string',
        
        editType: 'style',
        
    },
    uid: {
        valType: 'string',
        
        dflt: '',
        editType: 'calc'
    },
    ids: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    customdata: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    hoverinfo: {
        valType: 'flaglist',
        
        flags: ['x', 'y', 'z', 'text', 'name'],
        extras: ['all', 'none', 'skip'],
        arrayOk: true,
        dflt: 'all',
        editType: 'none',
        
    },
    hoverlabel: fxAttrs.hoverlabel,
    stream: {
        token: {
            valType: 'string',
            noBlank: true,
            strict: true,
            
            editType: 'calc',
            
        },
        maxpoints: {
            valType: 'number',
            min: 0,
            max: 10000,
            dflt: 500,
            
            editType: 'calc',
            
        },
        editType: 'calc'
    }
};

},{"../components/fx/attributes":266}],395:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    xaxis: {
        valType: 'subplotid',
        
        dflt: 'x',
        editType: 'calc+clearAxisTypes',
        
    },
    yaxis: {
        valType: 'subplotid',
        
        dflt: 'y',
        editType: 'calc+clearAxisTypes',
        
    }
};

},{}],396:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');
var Titles = require('../../components/titles');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');

var constants = require('../../constants/numerical');
var FP_SAFE = constants.FP_SAFE;
var ONEAVGYEAR = constants.ONEAVGYEAR;
var ONEAVGMONTH = constants.ONEAVGMONTH;
var ONEDAY = constants.ONEDAY;
var ONEHOUR = constants.ONEHOUR;
var ONEMIN = constants.ONEMIN;
var ONESEC = constants.ONESEC;
var MINUS_SIGN = constants.MINUS_SIGN;

var MID_SHIFT = require('../../constants/alignment').MID_SHIFT;

var axes = module.exports = {};

axes.layoutAttributes = require('./layout_attributes');
axes.supplyLayoutDefaults = require('./layout_defaults');

axes.setConvert = require('./set_convert');
var autoType = require('./axis_autotype');

var axisIds = require('./axis_ids');
axes.id2name = axisIds.id2name;
axes.cleanId = axisIds.cleanId;
axes.list = axisIds.list;
axes.listIds = axisIds.listIds;
axes.getFromId = axisIds.getFromId;
axes.getFromTrace = axisIds.getFromTrace;

/*
 * find the list of possible axes to reference with an xref or yref attribute
 * and coerce it to that list
 *
 * attr: the attribute we're generating a reference for. Should end in 'x' or 'y'
 *     but can be prefixed, like 'ax' for annotation's arrow x
 * dflt: the default to coerce to, or blank to use the first axis (falling back on
 *     extraOption if there is no axis)
 * extraOption: aside from existing axes with this letter, what non-axis value is allowed?
 *     Only required if it's different from `dflt`
 */
axes.coerceRef = function(containerIn, containerOut, gd, attr, dflt, extraOption) {
    var axLetter = attr.charAt(attr.length - 1),
        axlist = axes.listIds(gd, axLetter),
        refAttr = attr + 'ref',
        attrDef = {};

    if(!dflt) dflt = axlist[0] || extraOption;
    if(!extraOption) extraOption = dflt;

    // data-ref annotations are not supported in gl2d yet

    attrDef[refAttr] = {
        valType: 'enumerated',
        values: axlist.concat(extraOption ? [extraOption] : []),
        dflt: dflt
    };

    // xref, yref
    return Lib.coerce(containerIn, containerOut, attrDef, refAttr);
};

/*
 * coerce position attributes (range-type) that can be either on axes or absolute
 * (paper or pixel) referenced. The biggest complication here is that we don't know
 * before looking at the axis whether the value must be a number or not (it may be
 * a date string), so we can't use the regular valType='number' machinery
 *
 * axRef (string): the axis this position is referenced to, or:
 *     paper: fraction of the plot area
 *     pixel: pixels relative to some starting position
 * attr (string): the attribute in containerOut we are coercing
 * dflt (number): the default position, as a fraction or pixels. If the attribute
 *     is to be axis-referenced, this will be converted to an axis data value
 *
 * Also cleans the values, since the attribute definition itself has to say
 * valType: 'any' to handle date axes. This allows us to accept:
 * - for category axes: category names, and convert them here into serial numbers.
 *   Note that this will NOT work for axis range endpoints, because we don't know
 *   the category list yet (it's set by ax.makeCalcdata during calc)
 *   but it works for component (note, shape, images) positions.
 * - for date axes: JS Dates or milliseconds, and convert to date strings
 * - for other types: coerce them to numbers
 */
axes.coercePosition = function(containerOut, gd, coerce, axRef, attr, dflt) {
    var cleanPos, pos;

    if(axRef === 'paper' || axRef === 'pixel') {
        cleanPos = Lib.ensureNumber;
        pos = coerce(attr, dflt);
    } else {
        var ax = axes.getFromId(gd, axRef);
        dflt = ax.fraction2r(dflt);
        pos = coerce(attr, dflt);
        cleanPos = ax.cleanPos;
    }

    containerOut[attr] = cleanPos(pos);
};

axes.cleanPosition = function(pos, gd, axRef) {
    var cleanPos = (axRef === 'paper' || axRef === 'pixel') ?
        Lib.ensureNumber :
        axes.getFromId(gd, axRef).cleanPos;

    return cleanPos(pos);
};

var getDataConversions = axes.getDataConversions = function(gd, trace, target, targetArray) {
    var ax;

    // If target points to an axis, use the type we already have for that
    // axis to find the data type. Otherwise use the values to autotype.
    var d2cTarget = (target === 'x' || target === 'y' || target === 'z') ?
        target :
        targetArray;

    // In the case of an array target, make a mock data array
    // and call supplyDefaults to the data type and
    // setup the data-to-calc method.
    if(Array.isArray(d2cTarget)) {
        ax = {
            type: autoType(targetArray),
            _categories: []
        };
        axes.setConvert(ax);

        // build up ax._categories (usually done during ax.makeCalcdata()
        if(ax.type === 'category') {
            for(var i = 0; i < targetArray.length; i++) {
                ax.d2c(targetArray[i]);
            }
        }
    } else {
        ax = axes.getFromTrace(gd, trace, d2cTarget);
    }

    // if 'target' has corresponding axis
    // -> use setConvert method
    if(ax) return {d2c: ax.d2c, c2d: ax.c2d};

    // special case for 'ids'
    // -> cast to String
    if(d2cTarget === 'ids') return {d2c: toString, c2d: toString};

    // otherwise (e.g. numeric-array of 'marker.color' or 'marker.size')
    // -> cast to Number

    return {d2c: toNum, c2d: toNum};
};

function toNum(v) { return +v; }
function toString(v) { return String(v); }

axes.getDataToCoordFunc = function(gd, trace, target, targetArray) {
    return getDataConversions(gd, trace, target, targetArray).d2c;
};

// get counteraxis letter for this axis (name or id)
// this can also be used as the id for default counter axis
axes.counterLetter = function(id) {
    var axLetter = id.charAt(0);
    if(axLetter === 'x') return 'y';
    if(axLetter === 'y') return 'x';
};

// incorporate a new minimum difference and first tick into
// forced
// note that _forceTick0 is linearized, so needs to be turned into
// a range value for setting tick0
axes.minDtick = function(ax, newDiff, newFirst, allow) {
    // doesn't make sense to do forced min dTick on log or category axes,
    // and the plot itself may decide to cancel (ie non-grouped bars)
    if(['log', 'category'].indexOf(ax.type) !== -1 || !allow) {
        ax._minDtick = 0;
    }
    // undefined means there's nothing there yet
    else if(ax._minDtick === undefined) {
        ax._minDtick = newDiff;
        ax._forceTick0 = newFirst;
    }
    else if(ax._minDtick) {
        // existing minDtick is an integer multiple of newDiff
        // (within rounding err)
        // and forceTick0 can be shifted to newFirst
        if((ax._minDtick / newDiff + 1e-6) % 1 < 2e-6 &&
                (((newFirst - ax._forceTick0) / newDiff % 1) +
                    1.000001) % 1 < 2e-6) {
            ax._minDtick = newDiff;
            ax._forceTick0 = newFirst;
        }
        // if the converse is true (newDiff is a multiple of minDtick and
        // newFirst can be shifted to forceTick0) then do nothing - same
        // forcing stands. Otherwise, cancel forced minimum
        else if((newDiff / ax._minDtick + 1e-6) % 1 > 2e-6 ||
                (((newFirst - ax._forceTick0) / ax._minDtick % 1) +
                    1.000001) % 1 > 2e-6) {
            ax._minDtick = 0;
        }
    }
};

// Find the autorange for this axis
//
// assumes ax._min and ax._max have already been set by calling axes.expand
// using calcdata from all traces. These are arrays of:
// {val: calcdata value, pad: extra pixels beyond this value}
//
// Returns an array of [min, max]. These are calcdata for log and category axes
// and data for linear and date axes.
//
// TODO: we want to change log to data as well, but it's hard to do this
// maintaining backward compatibility. category will always have to use calcdata
// though, because otherwise values between categories (or outside all categories)
// would be impossible.
axes.getAutoRange = function(ax) {
    var newRange = [];

    var minmin = ax._min[0].val,
        maxmax = ax._max[0].val,
        i;

    for(i = 1; i < ax._min.length; i++) {
        if(minmin !== maxmax) break;
        minmin = Math.min(minmin, ax._min[i].val);
    }
    for(i = 1; i < ax._max.length; i++) {
        if(minmin !== maxmax) break;
        maxmax = Math.max(maxmax, ax._max[i].val);
    }

    var j, minpt, maxpt, minbest, maxbest, dp, dv,
        mbest = 0,
        axReverse = false;

    if(ax.range) {
        var rng = Lib.simpleMap(ax.range, ax.r2l);
        axReverse = rng[1] < rng[0];
    }

    // one-time setting to easily reverse the axis
    // when plotting from code
    if(ax.autorange === 'reversed') {
        axReverse = true;
        ax.autorange = true;
    }

    for(i = 0; i < ax._min.length; i++) {
        minpt = ax._min[i];
        for(j = 0; j < ax._max.length; j++) {
            maxpt = ax._max[j];
            dv = maxpt.val - minpt.val;
            dp = ax._length - minpt.pad - maxpt.pad;
            if(dv > 0 && dp > 0 && dv / dp > mbest) {
                minbest = minpt;
                maxbest = maxpt;
                mbest = dv / dp;
            }
        }
    }

    if(minmin === maxmax) {
        var lower = minmin - 1;
        var upper = minmin + 1;
        if(ax.rangemode === 'tozero') {
            newRange = minmin < 0 ? [lower, 0] : [0, upper];
        }
        else if(ax.rangemode === 'nonnegative') {
            newRange = [Math.max(0, lower), Math.max(0, upper)];
        }
        else {
            newRange = [lower, upper];
        }
    }
    else if(mbest) {
        if(ax.type === 'linear' || ax.type === '-') {
            if(ax.rangemode === 'tozero') {
                if(minbest.val >= 0) {
                    minbest = {val: 0, pad: 0};
                }
                if(maxbest.val <= 0) {
                    maxbest = {val: 0, pad: 0};
                }
            }
            else if(ax.rangemode === 'nonnegative') {
                if(minbest.val - mbest * minbest.pad < 0) {
                    minbest = {val: 0, pad: 0};
                }
                if(maxbest.val < 0) {
                    maxbest = {val: 1, pad: 0};
                }
            }

            // in case it changed again...
            mbest = (maxbest.val - minbest.val) /
                (ax._length - minbest.pad - maxbest.pad);

        }

        newRange = [
            minbest.val - mbest * minbest.pad,
            maxbest.val + mbest * maxbest.pad
        ];
    }

    // don't let axis have zero size, while still respecting tozero and nonnegative
    if(newRange[0] === newRange[1]) {
        if(ax.rangemode === 'tozero') {
            if(newRange[0] < 0) {
                newRange = [newRange[0], 0];
            }
            else if(newRange[0] > 0) {
                newRange = [0, newRange[0]];
            }
            else {
                newRange = [0, 1];
            }
        }
        else {
            newRange = [newRange[0] - 1, newRange[0] + 1];
            if(ax.rangemode === 'nonnegative') {
                newRange[0] = Math.max(0, newRange[0]);
            }
        }
    }

    // maintain reversal
    if(axReverse) newRange.reverse();

    return Lib.simpleMap(newRange, ax.l2r || Number);
};

axes.doAutoRange = function(ax) {
    if(!ax._length) ax.setScale();

    // TODO do we really need this?
    var hasDeps = (ax._min && ax._max && ax._min.length && ax._max.length);

    if(ax.autorange && hasDeps) {
        ax.range = axes.getAutoRange(ax);

        ax._r = ax.range.slice();
        ax._rl = Lib.simpleMap(ax._r, ax.r2l);

        // doAutoRange will get called on fullLayout,
        // but we want to report its results back to layout

        var axIn = ax._input;
        axIn.range = ax.range.slice();
        axIn.autorange = ax.autorange;
    }
};

// save a copy of the initial axis ranges in fullLayout
// use them in mode bar and dblclick events
axes.saveRangeInitial = function(gd, overwrite) {
    var axList = axes.list(gd, '', true),
        hasOneAxisChanged = false;

    for(var i = 0; i < axList.length; i++) {
        var ax = axList[i];

        var isNew = (ax._rangeInitial === undefined);
        var hasChanged = (
            isNew || !(
                ax.range[0] === ax._rangeInitial[0] &&
                ax.range[1] === ax._rangeInitial[1]
            )
        );

        if((isNew && ax.autorange === false) || (overwrite && hasChanged)) {
            ax._rangeInitial = ax.range.slice();
            hasOneAxisChanged = true;
        }
    }

    return hasOneAxisChanged;
};

// save a copy of the initial spike visibility
axes.saveShowSpikeInitial = function(gd, overwrite) {
    var axList = axes.list(gd, '', true),
        hasOneAxisChanged = false,
        allEnabled = 'on';

    for(var i = 0; i < axList.length; i++) {
        var ax = axList[i];

        var isNew = (ax._showSpikeInitial === undefined);
        var hasChanged = (
            isNew || !(
                ax.showspikes === ax._showspikes
            )
        );

        if((isNew) || (overwrite && hasChanged)) {
            ax._showSpikeInitial = ax.showspikes;
            hasOneAxisChanged = true;
        }

        if(allEnabled === 'on' && !ax.showspikes) {
            allEnabled = 'off';
        }
    }
    gd._fullLayout._cartesianSpikesEnabled = allEnabled;
    return hasOneAxisChanged;
};

// axes.expand: if autoranging, include new data in the outer limits
// for this axis
// data is an array of numbers (ie already run through ax.d2c)
// available options:
//      vpad: (number or number array) pad values (data value +-vpad)
//      ppad: (number or number array) pad pixels (pixel location +-ppad)
//      ppadplus, ppadminus, vpadplus, vpadminus:
//          separate padding for each side, overrides symmetric
//      padded: (boolean) add 5% padding to both ends
//          (unless one end is overridden by tozero)
//      tozero: (boolean) make sure to include zero if axis is linear,
//          and make it a tight bound if possible
axes.expand = function(ax, data, options) {
    var needsAutorange = (
        ax.autorange ||
        !!Lib.nestedProperty(ax, 'rangeslider.autorange').get()
    );

    if(!needsAutorange || !data) return;

    if(!ax._min) ax._min = [];
    if(!ax._max) ax._max = [];
    if(!options) options = {};
    if(!ax._m) ax.setScale();

    var len = data.length,
        extrappad = options.padded ? ax._length * 0.05 : 0,
        tozero = options.tozero && (ax.type === 'linear' || ax.type === '-'),
        i, j, v, di, dmin, dmax,
        ppadiplus, ppadiminus, includeThis, vmin, vmax;

    // domain-constrained axes: base extrappad on the unconstrained
    // domain so it's consistent as the domain changes
    if(extrappad && (ax.constrain === 'domain') && ax._inputDomain) {
        extrappad *= (ax._inputDomain[1] - ax._inputDomain[0]) /
            (ax.domain[1] - ax.domain[0]);
    }

    function getPad(item) {
        if(Array.isArray(item)) {
            return function(i) { return Math.max(Number(item[i]||0), 0); };
        }
        else {
            var v = Math.max(Number(item||0), 0);
            return function() { return v; };
        }
    }
    var ppadplus = getPad((ax._m > 0 ?
            options.ppadplus : options.ppadminus) || options.ppad || 0),
        ppadminus = getPad((ax._m > 0 ?
            options.ppadminus : options.ppadplus) || options.ppad || 0),
        vpadplus = getPad(options.vpadplus || options.vpad),
        vpadminus = getPad(options.vpadminus || options.vpad);

    function addItem(i) {
        di = data[i];
        if(!isNumeric(di)) return;
        ppadiplus = ppadplus(i) + extrappad;
        ppadiminus = ppadminus(i) + extrappad;
        vmin = di - vpadminus(i);
        vmax = di + vpadplus(i);
        // special case for log axes: if vpad makes this object span
        // more than an order of mag, clip it to one order. This is so
        // we don't have non-positive errors or absurdly large lower
        // range due to rounding errors
        if(ax.type === 'log' && vmin < vmax / 10) { vmin = vmax / 10; }

        dmin = ax.c2l(vmin);
        dmax = ax.c2l(vmax);

        if(tozero) {
            dmin = Math.min(0, dmin);
            dmax = Math.max(0, dmax);
        }

        // In order to stop overflow errors, don't consider points
        // too close to the limits of js floating point
        function goodNumber(v) {
            return isNumeric(v) && Math.abs(v) < FP_SAFE;
        }

        if(goodNumber(dmin)) {
            includeThis = true;
            // take items v from ax._min and compare them to the
            // presently active point:
            // - if the item supercedes the new point, set includethis false
            // - if the new pt supercedes the item, delete it from ax._min
            for(j = 0; j < ax._min.length && includeThis; j++) {
                v = ax._min[j];
                if(v.val <= dmin && v.pad >= ppadiminus) {
                    includeThis = false;
                }
                else if(v.val >= dmin && v.pad <= ppadiminus) {
                    ax._min.splice(j, 1);
                    j--;
                }
            }
            if(includeThis) {
                ax._min.push({
                    val: dmin,
                    pad: (tozero && dmin === 0) ? 0 : ppadiminus
                });
            }
        }

        if(goodNumber(dmax)) {
            includeThis = true;
            for(j = 0; j < ax._max.length && includeThis; j++) {
                v = ax._max[j];
                if(v.val >= dmax && v.pad >= ppadiplus) {
                    includeThis = false;
                }
                else if(v.val <= dmax && v.pad <= ppadiplus) {
                    ax._max.splice(j, 1);
                    j--;
                }
            }
            if(includeThis) {
                ax._max.push({
                    val: dmax,
                    pad: (tozero && dmax === 0) ? 0 : ppadiplus
                });
            }
        }
    }

    // For efficiency covering monotonic or near-monotonic data,
    // check a few points at both ends first and then sweep
    // through the middle
    for(i = 0; i < 6; i++) addItem(i);
    for(i = len - 1; i > 5; i--) addItem(i);

};

axes.autoBin = function(data, ax, nbins, is2d, calendar) {
    var dataMin = Lib.aggNums(Math.min, null, data),
        dataMax = Lib.aggNums(Math.max, null, data);

    if(!calendar) calendar = ax.calendar;

    if(ax.type === 'category') {
        return {
            start: dataMin - 0.5,
            end: dataMax + 0.5,
            size: 1,
            _count: dataMax - dataMin + 1
        };
    }

    var size0;
    if(nbins) size0 = ((dataMax - dataMin) / nbins);
    else {
        // totally auto: scale off std deviation so the highest bin is
        // somewhat taller than the total number of bins, but don't let
        // the size get smaller than the 'nice' rounded down minimum
        // difference between values
        var distinctData = Lib.distinctVals(data),
            msexp = Math.pow(10, Math.floor(
                Math.log(distinctData.minDiff) / Math.LN10)),
            minSize = msexp * Lib.roundUp(
                distinctData.minDiff / msexp, [0.9, 1.9, 4.9, 9.9], true);
        size0 = Math.max(minSize, 2 * Lib.stdev(data) /
            Math.pow(data.length, is2d ? 0.25 : 0.4));

        // fallback if ax.d2c output BADNUMs
        // e.g. when user try to plot categorical bins
        // on a layout.xaxis.type: 'linear'
        if(!isNumeric(size0)) size0 = 1;
    }

    // piggyback off autotick code to make "nice" bin sizes
    var dummyAx;
    if(ax.type === 'log') {
        dummyAx = {
            type: 'linear',
            range: [dataMin, dataMax]
        };
    }
    else {
        dummyAx = {
            type: ax.type,
            range: Lib.simpleMap([dataMin, dataMax], ax.c2r, 0, calendar),
            calendar: calendar
        };
    }
    axes.setConvert(dummyAx);

    axes.autoTicks(dummyAx, size0);
    var binStart = axes.tickIncrement(
            axes.tickFirst(dummyAx), dummyAx.dtick, 'reverse', calendar);
    var binEnd, bincount;

    // check for too many data points right at the edges of bins
    // (>50% within 1% of bin edges) or all data points integral
    // and offset the bins accordingly
    if(typeof dummyAx.dtick === 'number') {
        binStart = autoShiftNumericBins(binStart, data, dummyAx, dataMin, dataMax);

        bincount = 1 + Math.floor((dataMax - binStart) / dummyAx.dtick);
        binEnd = binStart + bincount * dummyAx.dtick;
    }
    else {
        // month ticks - should be the only nonlinear kind we have at this point.
        // dtick (as supplied by axes.autoTick) only has nonlinear values on
        // date and log axes, but even if you display a histogram on a log axis
        // we bin it on a linear axis (which one could argue against, but that's
        // a separate issue)
        if(dummyAx.dtick.charAt(0) === 'M') {
            binStart = autoShiftMonthBins(binStart, data, dummyAx.dtick, dataMin, calendar);
        }

        // calculate the endpoint for nonlinear ticks - you have to
        // just increment until you're done
        binEnd = binStart;
        bincount = 0;
        while(binEnd <= dataMax) {
            binEnd = axes.tickIncrement(binEnd, dummyAx.dtick, false, calendar);
            bincount++;
        }
    }

    return {
        start: ax.c2r(binStart, 0, calendar),
        end: ax.c2r(binEnd, 0, calendar),
        size: dummyAx.dtick,
        _count: bincount
    };
};


function autoShiftNumericBins(binStart, data, ax, dataMin, dataMax) {
    var edgecount = 0,
        midcount = 0,
        intcount = 0,
        blankCount = 0;

    function nearEdge(v) {
        // is a value within 1% of a bin edge?
        return (1 + (v - binStart) * 100 / ax.dtick) % 100 < 2;
    }

    for(var i = 0; i < data.length; i++) {
        if(data[i] % 1 === 0) intcount++;
        else if(!isNumeric(data[i])) blankCount++;

        if(nearEdge(data[i])) edgecount++;
        if(nearEdge(data[i] + ax.dtick / 2)) midcount++;
    }
    var dataCount = data.length - blankCount;

    if(intcount === dataCount && ax.type !== 'date') {
        // all integers: if bin size is <1, it's because
        // that was specifically requested (large nbins)
        // so respect that... but center the bins containing
        // integers on those integers
        if(ax.dtick < 1) {
            binStart = dataMin - 0.5 * ax.dtick;
        }
        // otherwise start half an integer down regardless of
        // the bin size, just enough to clear up endpoint
        // ambiguity about which integers are in which bins.
        else {
            binStart -= 0.5;
            if(binStart + ax.dtick < dataMin) binStart += ax.dtick;
        }
    }
    else if(midcount < dataCount * 0.1) {
        if(edgecount > dataCount * 0.3 ||
                nearEdge(dataMin) || nearEdge(dataMax)) {
            // lots of points at the edge, not many in the middle
            // shift half a bin
            var binshift = ax.dtick / 2;
            binStart += (binStart + binshift < dataMin) ? binshift : -binshift;
        }
    }
    return binStart;
}


function autoShiftMonthBins(binStart, data, dtick, dataMin, calendar) {
    var stats = Lib.findExactDates(data, calendar);
    // number of data points that needs to be an exact value
    // to shift that increment to (near) the bin center
    var threshold = 0.8;

    if(stats.exactDays > threshold) {
        var numMonths = Number(dtick.substr(1));

        if((stats.exactYears > threshold) && (numMonths % 12 === 0)) {
            // The exact middle of a non-leap-year is 1.5 days into July
            // so if we start the bins here, all but leap years will
            // get hover-labeled as exact years.
            binStart = axes.tickIncrement(binStart, 'M6', 'reverse') + ONEDAY * 1.5;
        }
        else if(stats.exactMonths > threshold) {
            // Months are not as clean, but if we shift half the *longest*
            // month (31/2 days) then 31-day months will get labeled exactly
            // and shorter months will get labeled with the correct month
            // but shifted 12-36 hours into it.
            binStart = axes.tickIncrement(binStart, 'M1', 'reverse') + ONEDAY * 15.5;
        }
        else {
            // Shifting half a day is exact, but since these are month bins it
            // will always give a somewhat odd-looking label, until we do something
            // smarter like showing the bin boundaries (or the bounds of the actual
            // data in each bin)
            binStart -= ONEDAY / 2;
        }
        var nextBinStart = axes.tickIncrement(binStart, dtick);

        if(nextBinStart <= dataMin) return nextBinStart;
    }
    return binStart;
}

// ----------------------------------------------------
// Ticks and grids
// ----------------------------------------------------

// calculate the ticks: text, values, positioning
// if ticks are set to automatic, determine the right values (tick0,dtick)
// in any case, set tickround to # of digits to round tick labels to,
// or codes to this effect for log and date scales
axes.calcTicks = function calcTicks(ax) {
    var rng = Lib.simpleMap(ax.range, ax.r2l);

    // calculate max number of (auto) ticks to display based on plot size
    if(ax.tickmode === 'auto' || !ax.dtick) {
        var nt = ax.nticks,
            minPx;
        if(!nt) {
            if(ax.type === 'category') {
                minPx = ax.tickfont ? (ax.tickfont.size || 12) * 1.2 : 15;
                nt = ax._length / minPx;
            }
            else {
                minPx = ax._id.charAt(0) === 'y' ? 40 : 80;
                nt = Lib.constrain(ax._length / minPx, 4, 9) + 1;
            }
        }

        // add a couple of extra digits for filling in ticks when we
        // have explicit tickvals without tick text
        if(ax.tickmode === 'array') nt *= 100;

        axes.autoTicks(ax, Math.abs(rng[1] - rng[0]) / nt);
        // check for a forced minimum dtick
        if(ax._minDtick > 0 && ax.dtick < ax._minDtick * 2) {
            ax.dtick = ax._minDtick;
            ax.tick0 = ax.l2r(ax._forceTick0);
        }
    }

    // check for missing tick0
    if(!ax.tick0) {
        ax.tick0 = (ax.type === 'date') ? '2000-01-01' : 0;
    }

    // now figure out rounding of tick values
    autoTickRound(ax);

    // now that we've figured out the auto values for formatting
    // in case we're missing some ticktext, we can break out for array ticks
    if(ax.tickmode === 'array') return arrayTicks(ax);

    // find the first tick
    ax._tmin = axes.tickFirst(ax);

    // check for reversed axis
    var axrev = (rng[1] < rng[0]);

    // return the full set of tick vals
    var vals = [],
        // add a tiny bit so we get ticks which may have rounded out
        endtick = rng[1] * 1.0001 - rng[0] * 0.0001;
    if(ax.type === 'category') {
        endtick = (axrev) ? Math.max(-0.5, endtick) :
            Math.min(ax._categories.length - 0.5, endtick);
    }

    var xPrevious = null;
    var maxTicks = Math.max(1000, ax._length || 0);
    for(var x = ax._tmin;
            (axrev) ? (x >= endtick) : (x <= endtick);
            x = axes.tickIncrement(x, ax.dtick, axrev, ax.calendar)) {
        // prevent infinite loops - no more than one tick per pixel,
        // and make sure each value is different from the previous
        if(vals.length > maxTicks || x === xPrevious) break;
        xPrevious = x;

        vals.push(x);
    }

    // save the last tick as well as first, so we can
    // show the exponent only on the last one
    ax._tmax = vals[vals.length - 1];

    // for showing the rest of a date when the main tick label is only the
    // latter part: ax._prevDateHead holds what we showed most recently.
    // Start with it cleared and mark that we're in calcTicks (ie calculating a
    // whole string of these so we should care what the previous date head was!)
    ax._prevDateHead = '';
    ax._inCalcTicks = true;

    var ticksOut = new Array(vals.length);
    for(var i = 0; i < vals.length; i++) ticksOut[i] = axes.tickText(ax, vals[i]);

    ax._inCalcTicks = false;

    return ticksOut;
};

function arrayTicks(ax) {
    var vals = ax.tickvals,
        text = ax.ticktext,
        ticksOut = new Array(vals.length),
        rng = Lib.simpleMap(ax.range, ax.r2l),
        r0expanded = rng[0] * 1.0001 - rng[1] * 0.0001,
        r1expanded = rng[1] * 1.0001 - rng[0] * 0.0001,
        tickMin = Math.min(r0expanded, r1expanded),
        tickMax = Math.max(r0expanded, r1expanded),
        vali,
        i,
        j = 0;

    // without a text array, just format the given values as any other ticks
    // except with more precision to the numbers
    if(!Array.isArray(text)) text = [];

    // make sure showing ticks doesn't accidentally add new categories
    var tickVal2l = ax.type === 'category' ? ax.d2l_noadd : ax.d2l;

    // array ticks on log axes always show the full number
    // (if no explicit ticktext overrides it)
    if(ax.type === 'log' && String(ax.dtick).charAt(0) !== 'L') {
        ax.dtick = 'L' + Math.pow(10, Math.floor(Math.min(ax.range[0], ax.range[1])) - 1);
    }

    for(i = 0; i < vals.length; i++) {
        vali = tickVal2l(vals[i]);
        if(vali > tickMin && vali < tickMax) {
            if(text[i] === undefined) ticksOut[j] = axes.tickText(ax, vali);
            else ticksOut[j] = tickTextObj(ax, vali, String(text[i]));
            j++;
        }
    }

    if(j < vals.length) ticksOut.splice(j, vals.length - j);

    return ticksOut;
}

var roundBase10 = [2, 5, 10],
    roundBase24 = [1, 2, 3, 6, 12],
    roundBase60 = [1, 2, 5, 10, 15, 30],
    // 2&3 day ticks are weird, but need something btwn 1&7
    roundDays = [1, 2, 3, 7, 14],
    // approx. tick positions for log axes, showing all (1) and just 1, 2, 5 (2)
    // these don't have to be exact, just close enough to round to the right value
    roundLog1 = [-0.046, 0, 0.301, 0.477, 0.602, 0.699, 0.778, 0.845, 0.903, 0.954, 1],
    roundLog2 = [-0.301, 0, 0.301, 0.699, 1];

function roundDTick(roughDTick, base, roundingSet) {
    return base * Lib.roundUp(roughDTick / base, roundingSet);
}

// autoTicks: calculate best guess at pleasant ticks for this axis
// inputs:
//      ax - an axis object
//      roughDTick - rough tick spacing (to be turned into a nice round number)
// outputs (into ax):
//   tick0: starting point for ticks (not necessarily on the graph)
//      usually 0 for numeric (=10^0=1 for log) or jan 1, 2000 for dates
//   dtick: the actual, nice round tick spacing, usually a little larger than roughDTick
//      if the ticks are spaced linearly (linear scale, categories,
//          log with only full powers, date ticks < month),
//          this will just be a number
//      months: M#
//      years: M# where # is 12*number of years
//      log with linear ticks: L# where # is the linear tick spacing
//      log showing powers plus some intermediates:
//          D1 shows all digits, D2 shows 2 and 5
axes.autoTicks = function(ax, roughDTick) {
    var base;

    if(ax.type === 'date') {
        ax.tick0 = Lib.dateTick0(ax.calendar);
        // the criteria below are all based on the rough spacing we calculate
        // being > half of the final unit - so precalculate twice the rough val
        var roughX2 = 2 * roughDTick;

        if(roughX2 > ONEAVGYEAR) {
            roughDTick /= ONEAVGYEAR;
            base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
            ax.dtick = 'M' + (12 * roundDTick(roughDTick, base, roundBase10));
        }
        else if(roughX2 > ONEAVGMONTH) {
            roughDTick /= ONEAVGMONTH;
            ax.dtick = 'M' + roundDTick(roughDTick, 1, roundBase24);
        }
        else if(roughX2 > ONEDAY) {
            ax.dtick = roundDTick(roughDTick, ONEDAY, roundDays);
            // get week ticks on sunday
            // this will also move the base tick off 2000-01-01 if dtick is
            // 2 or 3 days... but that's a weird enough case that we'll ignore it.
            ax.tick0 = Lib.dateTick0(ax.calendar, true);
        }
        else if(roughX2 > ONEHOUR) {
            ax.dtick = roundDTick(roughDTick, ONEHOUR, roundBase24);
        }
        else if(roughX2 > ONEMIN) {
            ax.dtick = roundDTick(roughDTick, ONEMIN, roundBase60);
        }
        else if(roughX2 > ONESEC) {
            ax.dtick = roundDTick(roughDTick, ONESEC, roundBase60);
        }
        else {
            // milliseconds
            base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
            ax.dtick = roundDTick(roughDTick, base, roundBase10);
        }
    }
    else if(ax.type === 'log') {
        ax.tick0 = 0;
        var rng = Lib.simpleMap(ax.range, ax.r2l);

        if(roughDTick > 0.7) {
            // only show powers of 10
            ax.dtick = Math.ceil(roughDTick);
        }
        else if(Math.abs(rng[1] - rng[0]) < 1) {
            // span is less than one power of 10
            var nt = 1.5 * Math.abs((rng[1] - rng[0]) / roughDTick);

            // ticks on a linear scale, labeled fully
            roughDTick = Math.abs(Math.pow(10, rng[1]) -
                Math.pow(10, rng[0])) / nt;
            base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
            ax.dtick = 'L' + roundDTick(roughDTick, base, roundBase10);
        }
        else {
            // include intermediates between powers of 10,
            // labeled with small digits
            // ax.dtick = "D2" (show 2 and 5) or "D1" (show all digits)
            ax.dtick = (roughDTick > 0.3) ? 'D2' : 'D1';
        }
    }
    else if(ax.type === 'category') {
        ax.tick0 = 0;
        ax.dtick = Math.ceil(Math.max(roughDTick, 1));
    }
    else {
        // auto ticks always start at 0
        ax.tick0 = 0;
        base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
        ax.dtick = roundDTick(roughDTick, base, roundBase10);
    }

    // prevent infinite loops
    if(ax.dtick === 0) ax.dtick = 1;

    // TODO: this is from log axis histograms with autorange off
    if(!isNumeric(ax.dtick) && typeof ax.dtick !== 'string') {
        var olddtick = ax.dtick;
        ax.dtick = 1;
        throw 'ax.dtick error: ' + String(olddtick);
    }
};

// after dtick is already known, find tickround = precision
// to display in tick labels
//   for numeric ticks, integer # digits after . to round to
//   for date ticks, the last date part to show (y,m,d,H,M,S)
//      or an integer # digits past seconds
function autoTickRound(ax) {
    var dtick = ax.dtick;

    ax._tickexponent = 0;
    if(!isNumeric(dtick) && typeof dtick !== 'string') {
        dtick = 1;
    }

    if(ax.type === 'category') {
        ax._tickround = null;
    }
    if(ax.type === 'date') {
        // If tick0 is unusual, give tickround a bit more information
        // not necessarily *all* the information in tick0 though, if it's really odd
        // minimal string length for tick0: 'd' is 10, 'M' is 16, 'S' is 19
        // take off a leading minus (year < 0) and i (intercalary month) so length is consistent
        var tick0ms = ax.r2l(ax.tick0),
            tick0str = ax.l2r(tick0ms).replace(/(^-|i)/g, ''),
            tick0len = tick0str.length;

        if(String(dtick).charAt(0) === 'M') {
            // any tick0 more specific than a year: alway show the full date
            if(tick0len > 10 || tick0str.substr(5) !== '01-01') ax._tickround = 'd';
            // show the month unless ticks are full multiples of a year
            else ax._tickround = (+(dtick.substr(1)) % 12 === 0) ? 'y' : 'm';
        }
        else if((dtick >= ONEDAY && tick0len <= 10) || (dtick >= ONEDAY * 15)) ax._tickround = 'd';
        else if((dtick >= ONEMIN && tick0len <= 16) || (dtick >= ONEHOUR)) ax._tickround = 'M';
        else if((dtick >= ONESEC && tick0len <= 19) || (dtick >= ONEMIN)) ax._tickround = 'S';
        else {
            // tickround is a number of digits of fractional seconds
            // of any two adjacent ticks, at least one will have the maximum fractional digits
            // of all possible ticks - so take the max. length of tick0 and the next one
            var tick1len = ax.l2r(tick0ms + dtick).replace(/^-/, '').length;
            ax._tickround = Math.max(tick0len, tick1len) - 20;
        }
    }
    else if(isNumeric(dtick) || dtick.charAt(0) === 'L') {
        // linear or log (except D1, D2)
        var rng = ax.range.map(ax.r2d || Number);
        if(!isNumeric(dtick)) dtick = Number(dtick.substr(1));
        // 2 digits past largest digit of dtick
        ax._tickround = 2 - Math.floor(Math.log(dtick) / Math.LN10 + 0.01);

        var maxend = Math.max(Math.abs(rng[0]), Math.abs(rng[1]));

        var rangeexp = Math.floor(Math.log(maxend) / Math.LN10 + 0.01);
        if(Math.abs(rangeexp) > 3) {
            if(isSIFormat(ax.exponentformat) && !beyondSI(rangeexp)) {
                ax._tickexponent = 3 * Math.round((rangeexp - 1) / 3);
            }
            else ax._tickexponent = rangeexp;
        }
    }
    // D1 or D2 (log)
    else ax._tickround = null;
}

// months and years don't have constant millisecond values
// (but a year is always 12 months so we only need months)
// log-scale ticks are also not consistently spaced, except
// for pure powers of 10
// numeric ticks always have constant differences, other datetime ticks
// can all be calculated as constant number of milliseconds
axes.tickIncrement = function(x, dtick, axrev, calendar) {
    var axSign = axrev ? -1 : 1;

    // includes linear, all dates smaller than month, and pure 10^n in log
    if(isNumeric(dtick)) return x + axSign * dtick;

    // everything else is a string, one character plus a number
    var tType = dtick.charAt(0),
        dtSigned = axSign * Number(dtick.substr(1));

    // Dates: months (or years - see Lib.incrementMonth)
    if(tType === 'M') return Lib.incrementMonth(x, dtSigned, calendar);

    // Log scales: Linear, Digits
    else if(tType === 'L') return Math.log(Math.pow(10, x) + dtSigned) / Math.LN10;

    // log10 of 2,5,10, or all digits (logs just have to be
    // close enough to round)
    else if(tType === 'D') {
        var tickset = (dtick === 'D2') ? roundLog2 : roundLog1,
            x2 = x + axSign * 0.01,
            frac = Lib.roundUp(Lib.mod(x2, 1), tickset, axrev);

        return Math.floor(x2) +
            Math.log(d3.round(Math.pow(10, frac), 1)) / Math.LN10;
    }
    else throw 'unrecognized dtick ' + String(dtick);
};

// calculate the first tick on an axis
axes.tickFirst = function(ax) {
    var r2l = ax.r2l || Number,
        rng = Lib.simpleMap(ax.range, r2l),
        axrev = rng[1] < rng[0],
        sRound = axrev ? Math.floor : Math.ceil,
        // add a tiny extra bit to make sure we get ticks
        // that may have been rounded out
        r0 = rng[0] * 1.0001 - rng[1] * 0.0001,
        dtick = ax.dtick,
        tick0 = r2l(ax.tick0);

    if(isNumeric(dtick)) {
        var tmin = sRound((r0 - tick0) / dtick) * dtick + tick0;

        // make sure no ticks outside the category list
        if(ax.type === 'category') {
            tmin = Lib.constrain(tmin, 0, ax._categories.length - 1);
        }
        return tmin;
    }

    var tType = dtick.charAt(0),
        dtNum = Number(dtick.substr(1));

    // Dates: months (or years)
    if(tType === 'M') {
        var cnt = 0,
            t0 = tick0,
            t1,
            mult,
            newDTick;

        // This algorithm should work for *any* nonlinear (but close to linear!)
        // tick spacing. Limit to 10 iterations, for gregorian months it's normally <=3.
        while(cnt < 10) {
            t1 = axes.tickIncrement(t0, dtick, axrev, ax.calendar);
            if((t1 - r0) * (t0 - r0) <= 0) {
                // t1 and t0 are on opposite sides of r0! we've succeeded!
                if(axrev) return Math.min(t0, t1);
                return Math.max(t0, t1);
            }
            mult = (r0 - ((t0 + t1) / 2)) / (t1 - t0);
            newDTick = tType + ((Math.abs(Math.round(mult)) || 1) * dtNum);
            t0 = axes.tickIncrement(t0, newDTick, mult < 0 ? !axrev : axrev, ax.calendar);
            cnt++;
        }
        Lib.error('tickFirst did not converge', ax);
        return t0;
    }

    // Log scales: Linear, Digits
    else if(tType === 'L') {
        return Math.log(sRound(
            (Math.pow(10, r0) - tick0) / dtNum) * dtNum + tick0) / Math.LN10;
    }
    else if(tType === 'D') {
        var tickset = (dtick === 'D2') ? roundLog2 : roundLog1,
            frac = Lib.roundUp(Lib.mod(r0, 1), tickset, axrev);

        return Math.floor(r0) +
            Math.log(d3.round(Math.pow(10, frac), 1)) / Math.LN10;
    }
    else throw 'unrecognized dtick ' + String(dtick);
};

// draw the text for one tick.
// px,py are the location on gd.paper
// prefix is there so the x axis ticks can be dropped a line
// ax is the axis layout, x is the tick value
// hover is a (truthy) flag for whether to show numbers with a bit
// more precision for hovertext
axes.tickText = function(ax, x, hover) {
    var out = tickTextObj(ax, x),
        hideexp,
        arrayMode = ax.tickmode === 'array',
        extraPrecision = hover || arrayMode,
        i,
        tickVal2l = ax.type === 'category' ? ax.d2l_noadd : ax.d2l;

    if(arrayMode && Array.isArray(ax.ticktext)) {
        var rng = Lib.simpleMap(ax.range, ax.r2l),
            minDiff = Math.abs(rng[1] - rng[0]) / 10000;
        for(i = 0; i < ax.ticktext.length; i++) {
            if(Math.abs(x - tickVal2l(ax.tickvals[i])) < minDiff) break;
        }
        if(i < ax.ticktext.length) {
            out.text = String(ax.ticktext[i]);
            return out;
        }
    }

    function isHidden(showAttr) {
        var first_or_last;

        if(showAttr === undefined) return true;
        if(hover) return showAttr === 'none';

        first_or_last = {
            first: ax._tmin,
            last: ax._tmax
        }[showAttr];

        return showAttr !== 'all' && x !== first_or_last;
    }

    if(hover) {
        hideexp = 'never';
    } else {
        hideexp = ax.exponentformat !== 'none' && isHidden(ax.showexponent) ? 'hide' : '';
    }

    if(ax.type === 'date') formatDate(ax, out, hover, extraPrecision);
    else if(ax.type === 'log') formatLog(ax, out, hover, extraPrecision, hideexp);
    else if(ax.type === 'category') formatCategory(ax, out);
    else formatLinear(ax, out, hover, extraPrecision, hideexp);

    // add prefix and suffix
    if(ax.tickprefix && !isHidden(ax.showtickprefix)) out.text = ax.tickprefix + out.text;
    if(ax.ticksuffix && !isHidden(ax.showticksuffix)) out.text += ax.ticksuffix;

    return out;
};

function tickTextObj(ax, x, text) {
    var tf = ax.tickfont || {};

    return {
        x: x,
        dx: 0,
        dy: 0,
        text: text || '',
        fontSize: tf.size,
        font: tf.family,
        fontColor: tf.color
    };
}

function formatDate(ax, out, hover, extraPrecision) {
    var tr = ax._tickround,
        fmt = (hover && ax.hoverformat) || ax.tickformat;

    if(extraPrecision) {
        // second or sub-second precision: extra always shows max digits.
        // for other fields, extra precision just adds one field.
        if(isNumeric(tr)) tr = 4;
        else tr = {y: 'm', m: 'd', d: 'M', M: 'S', S: 4}[tr];
    }

    var dateStr = Lib.formatDate(out.x, fmt, tr, ax.calendar),
        headStr;

    var splitIndex = dateStr.indexOf('\n');
    if(splitIndex !== -1) {
        headStr = dateStr.substr(splitIndex + 1);
        dateStr = dateStr.substr(0, splitIndex);
    }

    if(extraPrecision) {
        // if extraPrecision led to trailing zeros, strip them off
        // actually, this can lead to removing even more zeros than
        // in the original rounding, but that's fine because in these
        // contexts uniformity is not so important (if there's even
        // anything to be uniform with!)

        // can we remove the whole time part?
        if(dateStr === '00:00:00' || dateStr === '00:00') {
            dateStr = headStr;
            headStr = '';
        }
        else if(dateStr.length === 8) {
            // strip off seconds if they're zero (zero fractional seconds
            // are already omitted)
            // but we never remove minutes and leave just hours
            dateStr = dateStr.replace(/:00$/, '');
        }
    }

    if(headStr) {
        if(hover) {
            // hover puts it all on one line, so headPart works best up front
            // except for year headPart: turn this into "Jan 1, 2000" etc.
            if(tr === 'd') dateStr += ', ' + headStr;
            else dateStr = headStr + (dateStr ? ', ' + dateStr : '');
        }
        else if(!ax._inCalcTicks || (headStr !== ax._prevDateHead)) {
            dateStr += '<br>' + headStr;
            ax._prevDateHead = headStr;
        }
    }

    out.text = dateStr;
}

function formatLog(ax, out, hover, extraPrecision, hideexp) {
    var dtick = ax.dtick,
        x = out.x;

    if(hideexp === 'never') {
        // If this is a hover label, then we must *never* hide the exponent
        // for the sake of display, which could give the wrong value by
        // potentially many orders of magnitude. If hideexp was 'never', then
        // it's now succeeded by preventing the other condition from automating
        // this choice. Thus we can unset it so that the axis formatting takes
        // precedence.
        hideexp = '';
    }

    if(extraPrecision && ((typeof dtick !== 'string') || dtick.charAt(0) !== 'L')) dtick = 'L3';

    if(ax.tickformat || (typeof dtick === 'string' && dtick.charAt(0) === 'L')) {
        out.text = numFormat(Math.pow(10, x), ax, hideexp, extraPrecision);
    }
    else if(isNumeric(dtick) || ((dtick.charAt(0) === 'D') && (Lib.mod(x + 0.01, 1) < 0.1))) {
        var p = Math.round(x);
        if(['e', 'E', 'power'].indexOf(ax.exponentformat) !== -1 ||
                (isSIFormat(ax.exponentformat) && beyondSI(p))) {
            if(p === 0) out.text = 1;
            else if(p === 1) out.text = '10';
            else if(p > 1) out.text = '10<sup>' + p + '</sup>';
            else out.text = '10<sup>' + MINUS_SIGN + -p + '</sup>';

            out.fontSize *= 1.25;
        }
        else {
            out.text = numFormat(Math.pow(10, x), ax, '', 'fakehover');
            if(dtick === 'D1' && ax._id.charAt(0) === 'y') {
                out.dy -= out.fontSize / 6;
            }
        }
    }
    else if(dtick.charAt(0) === 'D') {
        out.text = String(Math.round(Math.pow(10, Lib.mod(x, 1))));
        out.fontSize *= 0.75;
    }
    else throw 'unrecognized dtick ' + String(dtick);

    // if 9's are printed on log scale, move the 10's away a bit
    if(ax.dtick === 'D1') {
        var firstChar = String(out.text).charAt(0);
        if(firstChar === '0' || firstChar === '1') {
            if(ax._id.charAt(0) === 'y') {
                out.dx -= out.fontSize / 4;
            }
            else {
                out.dy += out.fontSize / 2;
                out.dx += (ax.range[1] > ax.range[0] ? 1 : -1) *
                    out.fontSize * (x < 0 ? 0.5 : 0.25);
            }
        }
    }
}

function formatCategory(ax, out) {
    var tt = ax._categories[Math.round(out.x)];
    if(tt === undefined) tt = '';
    out.text = String(tt);
}

function formatLinear(ax, out, hover, extraPrecision, hideexp) {
    if(hideexp === 'never') {
        // If this is a hover label, then we must *never* hide the exponent
        // for the sake of display, which could give the wrong value by
        // potentially many orders of magnitude. If hideexp was 'never', then
        // it's now succeeded by preventing the other condition from automating
        // this choice. Thus we can unset it so that the axis formatting takes
        // precedence.
        hideexp = '';
    } else if(ax.showexponent === 'all' && Math.abs(out.x / ax.dtick) < 1e-6) {
        // don't add an exponent to zero if we're showing all exponents
        // so the only reason you'd show an exponent on zero is if it's the
        // ONLY tick to get an exponent (first or last)
        hideexp = 'hide';
    }
    out.text = numFormat(out.x, ax, hideexp, extraPrecision);
}

// format a number (tick value) according to the axis settings
// new, more reliable procedure than d3.round or similar:
// add half the rounding increment, then stringify and truncate
// also automatically switch to sci. notation
var SIPREFIXES = ['f', 'p', 'n', 'μ', 'm', '', 'k', 'M', 'G', 'T'];

function isSIFormat(exponentFormat) {
    return exponentFormat === 'SI' || exponentFormat === 'B';
}

// are we beyond the range of common SI prefixes?
// 10^-16 -> 1x10^-16
// 10^-15 -> 1f
// ...
// 10^14 -> 100T
// 10^15 -> 1x10^15
// 10^16 -> 1x10^16
function beyondSI(exponent) {
    return exponent > 14 || exponent < -15;
}

function numFormat(v, ax, fmtoverride, hover) {
        // negative?
    var isNeg = v < 0,
        // max number of digits past decimal point to show
        tickRound = ax._tickround,
        exponentFormat = fmtoverride || ax.exponentformat || 'B',
        exponent = ax._tickexponent,
        tickformat = ax.tickformat,
        separatethousands = ax.separatethousands;

    // special case for hover: set exponent just for this value, and
    // add a couple more digits of precision over tick labels
    if(hover) {
        // make a dummy axis obj to get the auto rounding and exponent
        var ah = {
            exponentformat: ax.exponentformat,
            dtick: ax.showexponent === 'none' ? ax.dtick :
                (isNumeric(v) ? Math.abs(v) || 1 : 1),
            // if not showing any exponents, don't change the exponent
            // from what we calculate
            range: ax.showexponent === 'none' ? ax.range.map(ax.r2d) : [0, v || 1]
        };
        autoTickRound(ah);
        tickRound = (Number(ah._tickround) || 0) + 4;
        exponent = ah._tickexponent;
        if(ax.hoverformat) tickformat = ax.hoverformat;
    }

    if(tickformat) return d3.format(tickformat)(v).replace(/-/g, MINUS_SIGN);

    // 'epsilon' - rounding increment
    var e = Math.pow(10, -tickRound) / 2;

    // exponentFormat codes:
    // 'e' (1.2e+6, default)
    // 'E' (1.2E+6)
    // 'SI' (1.2M)
    // 'B' (same as SI except 10^9=B not G)
    // 'none' (1200000)
    // 'power' (1.2x10^6)
    // 'hide' (1.2, use 3rd argument=='hide' to eg
    //      only show exponent on last tick)
    if(exponentFormat === 'none') exponent = 0;

    // take the sign out, put it back manually at the end
    // - makes cases easier
    v = Math.abs(v);
    if(v < e) {
        // 0 is just 0, but may get exponent if it's the last tick
        v = '0';
        isNeg = false;
    }
    else {
        v += e;
        // take out a common exponent, if any
        if(exponent) {
            v *= Math.pow(10, -exponent);
            tickRound += exponent;
        }
        // round the mantissa
        if(tickRound === 0) v = String(Math.floor(v));
        else if(tickRound < 0) {
            v = String(Math.round(v));
            v = v.substr(0, v.length + tickRound);
            for(var i = tickRound; i < 0; i++) v += '0';
        }
        else {
            v = String(v);
            var dp = v.indexOf('.') + 1;
            if(dp) v = v.substr(0, dp + tickRound).replace(/\.?0+$/, '');
        }
        // insert appropriate decimal point and thousands separator
        v = Lib.numSeparate(v, ax._separators, separatethousands);
    }

    // add exponent
    if(exponent && exponentFormat !== 'hide') {
        if(isSIFormat(exponentFormat) && beyondSI(exponent)) exponentFormat = 'power';

        var signedExponent;
        if(exponent < 0) signedExponent = MINUS_SIGN + -exponent;
        else if(exponentFormat !== 'power') signedExponent = '+' + exponent;
        else signedExponent = String(exponent);

        if(exponentFormat === 'e') {
            v += 'e' + signedExponent;
        }
        else if(exponentFormat === 'E') {
            v += 'E' + signedExponent;
        }
        else if(exponentFormat === 'power') {
            v += '×10<sup>' + signedExponent + '</sup>';
        }
        else if(exponentFormat === 'B' && exponent === 9) {
            v += 'B';
        }
        else if(isSIFormat(exponentFormat)) {
            v += SIPREFIXES[exponent / 3 + 5];
        }
    }

    // put sign back in and return
    // replace standard minus character (which is technically a hyphen)
    // with a true minus sign
    if(isNeg) return MINUS_SIGN + v;
    return v;
}

axes.subplotMatch = /^x([0-9]*)y([0-9]*)$/;

// getSubplots - extract all combinations of axes we need to make plots for
// as an array of items like 'xy', 'x2y', 'x2y2'...
// sorted by x (x,x2,x3...) then y
// optionally restrict to only subplots containing axis object ax
// looks both for combinations of x and y found in the data
// and at axes and their anchors
axes.getSubplots = function(gd, ax) {
    var subplots = [];
    var i, j, sp;

    // look for subplots in the data
    var data = gd._fullData || gd.data || [];

    for(i = 0; i < data.length; i++) {
        var trace = data[i];

        if(trace.visible === false || trace.visible === 'legendonly' ||
            !(Registry.traceIs(trace, 'cartesian') || Registry.traceIs(trace, 'gl2d'))
        ) continue;

        var xId = trace.xaxis || 'x',
            yId = trace.yaxis || 'y';
        sp = xId + yId;

        if(subplots.indexOf(sp) === -1) subplots.push(sp);
    }

    // look for subplots in the axes/anchors, so that we at least draw all axes
    var axesList = axes.list(gd, '', true);

    function hasAx2(sp, ax2) {
        return sp.indexOf(ax2._id) !== -1;
    }

    for(i = 0; i < axesList.length; i++) {
        var ax2 = axesList[i],
            ax2Letter = ax2._id.charAt(0),
            ax3Id = (ax2.anchor === 'free') ?
                ((ax2Letter === 'x') ? 'y' : 'x') :
                ax2.anchor,
            ax3 = axes.getFromId(gd, ax3Id);

        // look if ax2 is already represented in the data
        var foundAx2 = false;
        for(j = 0; j < subplots.length; j++) {
            if(hasAx2(subplots[j], ax2)) {
                foundAx2 = true;
                break;
            }
        }

        // ignore free axes that already represented in the data
        if(ax2.anchor === 'free' && foundAx2) continue;

        // ignore anchor-less axes
        if(!ax3) continue;

        sp = (ax2Letter === 'x') ?
            ax2._id + ax3._id :
            ax3._id + ax2._id;

        if(subplots.indexOf(sp) === -1) subplots.push(sp);
    }

    // filter invalid subplots
    var spMatch = axes.subplotMatch,
        allSubplots = [];

    for(i = 0; i < subplots.length; i++) {
        sp = subplots[i];
        if(spMatch.test(sp)) allSubplots.push(sp);
    }

    // sort the subplot ids
    allSubplots.sort(function(a, b) {
        var aMatch = a.match(spMatch),
            bMatch = b.match(spMatch);

        if(aMatch[1] === bMatch[1]) {
            return +(aMatch[2] || 1) - (bMatch[2] || 1);
        }

        return +(aMatch[1]||0) - (bMatch[1]||0);
    });

    if(ax) return axes.findSubplotsWithAxis(allSubplots, ax);
    return allSubplots;
};

// find all subplots with axis 'ax'
axes.findSubplotsWithAxis = function(subplots, ax) {
    var axMatch = new RegExp(
        (ax._id.charAt(0) === 'x') ? ('^' + ax._id + 'y') : (ax._id + '$')
    );
    var subplotsWithAxis = [];

    for(var i = 0; i < subplots.length; i++) {
        var sp = subplots[i];
        if(axMatch.test(sp)) subplotsWithAxis.push(sp);
    }

    return subplotsWithAxis;
};

// makeClipPaths: prepare clipPaths for all single axes and all possible xy pairings
axes.makeClipPaths = function(gd) {
    var fullLayout = gd._fullLayout;
    var fullWidth = {_offset: 0, _length: fullLayout.width, _id: ''};
    var fullHeight = {_offset: 0, _length: fullLayout.height, _id: ''};
    var xaList = axes.list(gd, 'x', true);
    var yaList = axes.list(gd, 'y', true);
    var clipList = [];
    var i, j;

    for(i = 0; i < xaList.length; i++) {
        clipList.push({x: xaList[i], y: fullHeight});
        for(j = 0; j < yaList.length; j++) {
            if(i === 0) clipList.push({x: fullWidth, y: yaList[j]});
            clipList.push({x: xaList[i], y: yaList[j]});
        }
    }

    // selectors don't work right with camelCase tags,
    // have to use class instead
    // https://groups.google.com/forum/#!topic/d3-js/6EpAzQ2gU9I
    var axClips = fullLayout._clips.selectAll('.axesclip')
        .data(clipList, function(d) { return d.x._id + d.y._id; });

    axClips.enter().append('clipPath')
        .classed('axesclip', true)
        .attr('id', function(d) { return 'clip' + fullLayout._uid + d.x._id + d.y._id; })
      .append('rect');

    axClips.exit().remove();

    axClips.each(function(d) {
        d3.select(this).select('rect').attr({
            x: d.x._offset || 0,
            y: d.y._offset || 0,
            width: d.x._length || 1,
            height: d.y._length || 1
        });
    });
};

// doTicks: draw ticks, grids, and tick labels
// axid: 'x', 'y', 'x2' etc,
//     blank to do all,
//     'redraw' to force full redraw, and reset:
//          ax._r (stored range for use by zoom/pan)
//          ax._rl (stored linearized range for use by zoom/pan)
//     or can pass in an axis object directly
axes.doTicks = function(gd, axid, skipTitle) {
    var fullLayout = gd._fullLayout,
        ax,
        independent = false;

    // allow passing an independent axis object instead of id
    if(typeof axid === 'object') {
        ax = axid;
        axid = ax._id;
        independent = true;
    }
    else {
        ax = axes.getFromId(gd, axid);

        if(axid === 'redraw') {
            fullLayout._paper.selectAll('g.subplot').each(function(subplot) {
                var plotinfo = fullLayout._plots[subplot],
                    xa = plotinfo.xaxis,
                    ya = plotinfo.yaxis;

                plotinfo.xaxislayer
                    .selectAll('.' + xa._id + 'tick').remove();
                plotinfo.yaxislayer
                    .selectAll('.' + ya._id + 'tick').remove();
                plotinfo.gridlayer
                    .selectAll('path').remove();
                plotinfo.zerolinelayer
                    .selectAll('path').remove();
                fullLayout._infolayer.select('.g-' + xa._id + 'title').remove();
                fullLayout._infolayer.select('.g-' + ya._id + 'title').remove();
            });
        }

        if(!axid || axid === 'redraw') {
            return Lib.syncOrAsync(axes.list(gd, '', true).map(function(ax) {
                return function() {
                    if(!ax._id) return;
                    var axDone = axes.doTicks(gd, ax._id);
                    if(axid === 'redraw') {
                        ax._r = ax.range.slice();
                        ax._rl = Lib.simpleMap(ax._r, ax.r2l);
                    }
                    return axDone;
                };
            }));
        }
    }

    // make sure we only have allowed options for exponents
    // (others can make confusing errors)
    if(!ax.tickformat) {
        if(['none', 'e', 'E', 'power', 'SI', 'B'].indexOf(ax.exponentformat) === -1) {
            ax.exponentformat = 'e';
        }
        if(['all', 'first', 'last', 'none'].indexOf(ax.showexponent) === -1) {
            ax.showexponent = 'all';
        }
    }

    // set scaling to pixels
    ax.setScale();

    var axLetter = axid.charAt(0),
        counterLetter = axes.counterLetter(axid),
        vals = axes.calcTicks(ax),
        datafn = function(d) { return [d.text, d.x, ax.mirror].join('_'); },
        tcls = axid + 'tick',
        gcls = axid + 'grid',
        zcls = axid + 'zl',
        pad = (ax.linewidth || 1) / 2,
        labelStandoff = (ax.ticks === 'outside' ? ax.ticklen : 0),
        labelShift = 0,
        gridWidth = Drawing.crispRound(gd, ax.gridwidth, 1),
        zeroLineWidth = Drawing.crispRound(gd, ax.zerolinewidth, gridWidth),
        tickWidth = Drawing.crispRound(gd, ax.tickwidth, 1),
        sides, transfn, tickpathfn, subplots,
        i;

    if(ax._counterangle && ax.ticks === 'outside') {
        var caRad = ax._counterangle * Math.PI / 180;
        labelStandoff = ax.ticklen * Math.cos(caRad) + 1;
        labelShift = ax.ticklen * Math.sin(caRad);
    }

    if(ax.showticklabels && (ax.ticks === 'outside' || ax.showline)) {
        labelStandoff += 0.2 * ax.tickfont.size;
    }

    // positioning arguments for x vs y axes
    if(axLetter === 'x') {
        sides = ['bottom', 'top'];
        transfn = function(d) {
            return 'translate(' + ax.l2p(d.x) + ',0)';
        };
        tickpathfn = function(shift, len) {
            if(ax._counterangle) {
                var caRad = ax._counterangle * Math.PI / 180;
                return 'M0,' + shift + 'l' + (Math.sin(caRad) * len) + ',' + (Math.cos(caRad) * len);
            }
            else return 'M0,' + shift + 'v' + len;
        };
    }
    else if(axLetter === 'y') {
        sides = ['left', 'right'];
        transfn = function(d) {
            return 'translate(0,' + ax.l2p(d.x) + ')';
        };
        tickpathfn = function(shift, len) {
            if(ax._counterangle) {
                var caRad = ax._counterangle * Math.PI / 180;
                return 'M' + shift + ',0l' + (Math.cos(caRad) * len) + ',' + (-Math.sin(caRad) * len);
            }
            else return 'M' + shift + ',0h' + len;
        };
    }
    else {
        Lib.warn('Unrecognized doTicks axis:', axid);
        return;
    }
    var axside = ax.side || sides[0],
    // which direction do the side[0], side[1], and free ticks go?
    // then we flip if outside XOR y axis
        ticksign = [-1, 1, axside === sides[1] ? 1 : -1];
    if((ax.ticks !== 'inside') === (axLetter === 'x')) {
        ticksign = ticksign.map(function(v) { return -v; });
    }

    if(!ax.visible) return;

    // remove zero lines, grid lines, and inside ticks if they're within
    // 1 pixel of the end
    // The key case here is removing zero lines when the axis bound is zero.
    function clipEnds(d) {
        var p = ax.l2p(d.x);
        return (p > 1 && p < ax._length - 1);
    }
    var valsClipped = vals.filter(clipEnds);

    function drawTicks(container, tickpath) {
        var ticks = container.selectAll('path.' + tcls)
            .data(ax.ticks === 'inside' ? valsClipped : vals, datafn);
        if(tickpath && ax.ticks) {
            ticks.enter().append('path').classed(tcls, 1).classed('ticks', 1)
                .classed('crisp', 1)
                .call(Color.stroke, ax.tickcolor)
                .style('stroke-width', tickWidth + 'px')
                .attr('d', tickpath);
            ticks.attr('transform', transfn);
            ticks.exit().remove();
        }
        else ticks.remove();
    }

    function drawLabels(container, position) {
        // tick labels - for now just the main labels.
        // TODO: mirror labels, esp for subplots
        var tickLabels = container.selectAll('g.' + tcls).data(vals, datafn);

        if(!isNumeric(position)) {
            tickLabels.remove();
            drawAxTitle();
            return;
        }
        if(!ax.showticklabels) {
            tickLabels.remove();
            drawAxTitle();
            calcBoundingBox();
            return;
        }

        var labelx, labely, labelanchor, labelpos0, flipit;
        if(axLetter === 'x') {
            flipit = (axside === 'bottom') ? 1 : -1;
            labelx = function(d) { return d.dx + labelShift * flipit; };
            labelpos0 = position + (labelStandoff + pad) * flipit;
            labely = function(d) {
                return d.dy + labelpos0 + d.fontSize *
                    ((axside === 'bottom') ? 1 : -0.2);
            };
            labelanchor = function(angle) {
                if(!isNumeric(angle) || angle === 0 || angle === 180) {
                    return 'middle';
                }
                return (angle * flipit < 0) ? 'end' : 'start';
            };
        }
        else {
            flipit = (axside === 'right') ? 1 : -1;
            labely = function(d) {
                return d.dy + d.fontSize * MID_SHIFT - labelShift * flipit;
            };
            labelx = function(d) {
                return d.dx + position + (labelStandoff + pad +
                    ((Math.abs(ax.tickangle) === 90) ? d.fontSize / 2 : 0)) * flipit;
            };
            labelanchor = function(angle) {
                if(isNumeric(angle) && Math.abs(angle) === 90) {
                    return 'middle';
                }
                return axside === 'right' ? 'start' : 'end';
            };
        }
        var maxFontSize = 0,
            autoangle = 0,
            labelsReady = [];
        tickLabels.enter().append('g').classed(tcls, 1)
            .append('text')
                // only so tex has predictable alignment that we can
                // alter later
                .attr('text-anchor', 'middle')
                .each(function(d) {
                    var thisLabel = d3.select(this),
                        newPromise = gd._promises.length;
                    thisLabel
                        .call(svgTextUtils.positionText, labelx(d), labely(d))
                        .call(Drawing.font, d.font, d.fontSize, d.fontColor)
                        .text(d.text)
                        .call(svgTextUtils.convertToTspans, gd);
                    newPromise = gd._promises[newPromise];
                    if(newPromise) {
                        // if we have an async label, we'll deal with that
                        // all here so take it out of gd._promises and
                        // instead position the label and promise this in
                        // labelsReady
                        labelsReady.push(gd._promises.pop().then(function() {
                            positionLabels(thisLabel, ax.tickangle);
                        }));
                    }
                    else {
                        // sync label: just position it now.
                        positionLabels(thisLabel, ax.tickangle);
                    }
                });
        tickLabels.exit().remove();

        tickLabels.each(function(d) {
            maxFontSize = Math.max(maxFontSize, d.fontSize);
        });

        function positionLabels(s, angle) {
            s.each(function(d) {
                var anchor = labelanchor(angle);
                var thisLabel = d3.select(this),
                    mathjaxGroup = thisLabel.select('.text-math-group'),
                    transform = transfn(d) +
                        ((isNumeric(angle) && +angle !== 0) ?
                        (' rotate(' + angle + ',' + labelx(d) + ',' +
                            (labely(d) - d.fontSize / 2) + ')') :
                        '');
                if(mathjaxGroup.empty()) {
                    thisLabel.select('text').attr({
                        transform: transform,
                        'text-anchor': anchor
                    });
                }
                else {
                    var mjShift =
                        Drawing.bBox(mathjaxGroup.node()).width *
                            {end: -0.5, start: 0.5}[anchor];
                    mathjaxGroup.attr('transform', transform +
                        (mjShift ? 'translate(' + mjShift + ',0)' : ''));
                }
            });
        }

        // make sure all labels are correctly positioned at their base angle
        // the positionLabels call above is only for newly drawn labels.
        // do this without waiting, using the last calculated angle to
        // minimize flicker, then do it again when we know all labels are
        // there, putting back the prescribed angle to check for overlaps.
        positionLabels(tickLabels, ax._lastangle || ax.tickangle);

        function allLabelsReady() {
            return labelsReady.length && Promise.all(labelsReady);
        }

        function fixLabelOverlaps() {
            positionLabels(tickLabels, ax.tickangle);

            // check for auto-angling if x labels overlap
            // don't auto-angle at all for log axes with
            // base and digit format
            if(axLetter === 'x' && !isNumeric(ax.tickangle) &&
                    (ax.type !== 'log' || String(ax.dtick).charAt(0) !== 'D')) {
                var lbbArray = [];
                tickLabels.each(function(d) {
                    var s = d3.select(this),
                        thisLabel = s.select('.text-math-group'),
                        x = ax.l2p(d.x);
                    if(thisLabel.empty()) thisLabel = s.select('text');

                    var bb = Drawing.bBox(thisLabel.node());

                    lbbArray.push({
                        // ignore about y, just deal with x overlaps
                        top: 0,
                        bottom: 10,
                        height: 10,
                        left: x - bb.width / 2,
                        // impose a 2px gap
                        right: x + bb.width / 2 + 2,
                        width: bb.width + 2
                    });
                });
                for(i = 0; i < lbbArray.length - 1; i++) {
                    if(Lib.bBoxIntersect(lbbArray[i], lbbArray[i + 1])) {
                        // any overlap at all - set 30 degrees
                        autoangle = 30;
                        break;
                    }
                }
                if(autoangle) {
                    var tickspacing = Math.abs(
                            (vals[vals.length - 1].x - vals[0].x) * ax._m
                        ) / (vals.length - 1);
                    if(tickspacing < maxFontSize * 2.5) {
                        autoangle = 90;
                    }
                    positionLabels(tickLabels, autoangle);
                }
                ax._lastangle = autoangle;
            }

            // update the axis title
            // (so it can move out of the way if needed)
            // TODO: separate out scoot so we don't need to do
            // a full redraw of the title (mostly relevant for MathJax)
            drawAxTitle();
            return axid + ' done';
        }

        function calcBoundingBox() {
            if(ax.showticklabels) {
                var gdBB = gd.getBoundingClientRect();
                var bBox = container.node().getBoundingClientRect();

                /*
                 * the way we're going to use this, the positioning that matters
                 * is relative to the origin of gd. This is important particularly
                 * if gd is scrollable, and may have been scrolled between the time
                 * we calculate this and the time we use it
                 */

                ax._boundingBox = {
                    width: bBox.width,
                    height: bBox.height,
                    left: bBox.left - gdBB.left,
                    right: bBox.right - gdBB.left,
                    top: bBox.top - gdBB.top,
                    bottom: bBox.bottom - gdBB.top
                };
            } else {
                var gs = fullLayout._size;
                var pos;

                // set dummy bbox for ticklabel-less axes

                if(axLetter === 'x') {
                    pos = ax.anchor === 'free' ?
                        gs.t + gs.h * (1 - ax.position) :
                        gs.t + gs.h * (1 - ax._anchorAxis.domain[{bottom: 0, top: 1}[ax.side]]);

                    ax._boundingBox = {
                        top: pos,
                        bottom: pos,
                        left: ax._offset,
                        rigth: ax._offset + ax._length,
                        width: ax._length,
                        height: 0
                    };
                } else {
                    pos = ax.anchor === 'free' ?
                        gs.l + gs.w * ax.position :
                        gs.l + gs.w * ax._anchorAxis.domain[{left: 0, right: 1}[ax.side]];

                    ax._boundingBox = {
                        left: pos,
                        right: pos,
                        bottom: ax._offset + ax._length,
                        top: ax._offset,
                        height: ax._length,
                        width: 0
                    };
                }
            }

            /*
             * for spikelines: what's the full domain of positions in the
             * opposite direction that are associated with this axis?
             * This means any axes that we make a subplot with, plus the
             * position of the axis itself if it's free.
             */
            if(subplots) {
                var fullRange = ax._counterSpan = [Infinity, -Infinity];

                for(i = 0; i < subplots.length; i++) {
                    var subplot = fullLayout._plots[subplots[i]];
                    var counterAxis = subplot[(axLetter === 'x') ? 'yaxis' : 'xaxis'];

                    extendRange(fullRange, [
                        counterAxis._offset,
                        counterAxis._offset + counterAxis._length
                    ]);
                }

                if(ax.anchor === 'free') {
                    extendRange(fullRange, (axLetter === 'x') ?
                        [ax._boundingBox.bottom, ax._boundingBox.top] :
                        [ax._boundingBox.right, ax._boundingBox.left]);
                }
            }

            function extendRange(range, newRange) {
                range[0] = Math.min(range[0], newRange[0]);
                range[1] = Math.max(range[1], newRange[1]);
            }
        }

        var done = Lib.syncOrAsync([
            allLabelsReady,
            fixLabelOverlaps,
            calcBoundingBox
        ]);
        if(done && done.then) gd._promises.push(done);
        return done;
    }

    function drawAxTitle() {
        if(skipTitle) return;

        // now this only applies to regular cartesian axes; colorbars and
        // others ALWAYS call doTicks with skipTitle=true so they can
        // configure their own titles.
        var ax = axisIds.getFromId(gd, axid),
            avoidSelection = d3.select(gd).selectAll('g.' + axid + 'tick'),
            avoid = {
                selection: avoidSelection,
                side: ax.side
            },
            axLetter = axid.charAt(0),
            gs = gd._fullLayout._size,
            offsetBase = 1.5,
            fontSize = ax.titlefont.size,
            transform,
            counterAxis,
            x,
            y;
        if(avoidSelection.size()) {
            var translation = Drawing.getTranslate(avoidSelection.node().parentNode);
            avoid.offsetLeft = translation.x;
            avoid.offsetTop = translation.y;
        }

        var titleStandoff = 10 + fontSize * offsetBase +
            (ax.linewidth ? ax.linewidth - 1 : 0);

        if(axLetter === 'x') {
            counterAxis = (ax.anchor === 'free') ?
                {_offset: gs.t + (1 - (ax.position || 0)) * gs.h, _length: 0} :
                axisIds.getFromId(gd, ax.anchor);

            x = ax._offset + ax._length / 2;
            if(ax.side === 'top') {
                y = -titleStandoff - fontSize * (ax.showticklabels ? 1 : 0);
            }
            else {
                y = counterAxis._length + titleStandoff +
                    fontSize * (ax.showticklabels ? 1.5 : 0.5);
            }
            y += counterAxis._offset;

            if(ax.rangeslider && ax.rangeslider.visible && ax._boundingBox) {
                y += (fullLayout.height - fullLayout.margin.b - fullLayout.margin.t) *
                    ax.rangeslider.thickness + ax._boundingBox.height;
            }

            if(!avoid.side) avoid.side = 'bottom';
        }
        else {
            counterAxis = (ax.anchor === 'free') ?
                {_offset: gs.l + (ax.position || 0) * gs.w, _length: 0} :
                axisIds.getFromId(gd, ax.anchor);

            y = ax._offset + ax._length / 2;
            if(ax.side === 'right') {
                x = counterAxis._length + titleStandoff +
                    fontSize * (ax.showticklabels ? 1 : 0.5);
            }
            else {
                x = -titleStandoff - fontSize * (ax.showticklabels ? 0.5 : 0);
            }
            x += counterAxis._offset;

            transform = {rotate: '-90', offset: 0};
            if(!avoid.side) avoid.side = 'left';
        }

        Titles.draw(gd, axid + 'title', {
            propContainer: ax,
            propName: ax._name + '.title',
            dfltName: axLetter.toUpperCase() + ' axis',
            avoid: avoid,
            transform: transform,
            attributes: {x: x, y: y, 'text-anchor': 'middle'}
        });
    }

    function traceHasBarsOrFill(trace, subplot) {
        if(trace.visible !== true || trace.xaxis + trace.yaxis !== subplot) return false;
        if(Registry.traceIs(trace, 'bar') && trace.orientation === {x: 'h', y: 'v'}[axLetter]) return true;
        return trace.fill && trace.fill.charAt(trace.fill.length - 1) === axLetter;
    }

    function drawGrid(plotinfo, counteraxis, subplot) {
        var gridcontainer = plotinfo.gridlayer,
            zlcontainer = plotinfo.zerolinelayer,
            gridvals = plotinfo['hidegrid' + axLetter] ? [] : valsClipped,
            gridpath = ax._gridpath ||
                'M0,0' + ((axLetter === 'x') ? 'v' : 'h') + counteraxis._length,
            grid = gridcontainer.selectAll('path.' + gcls)
                .data((ax.showgrid === false) ? [] : gridvals, datafn);
        grid.enter().append('path').classed(gcls, 1)
            .classed('crisp', 1)
            .attr('d', gridpath)
            .each(function(d) {
                if(ax.zeroline && (ax.type === 'linear' || ax.type === '-') &&
                        Math.abs(d.x) < ax.dtick / 100) {
                    d3.select(this).remove();
                }
            });
        grid.attr('transform', transfn)
            .call(Color.stroke, ax.gridcolor || '#ddd')
            .style('stroke-width', gridWidth + 'px');
        grid.exit().remove();

        // zero line
        if(zlcontainer) {
            var hasBarsOrFill = false;
            for(var i = 0; i < gd._fullData.length; i++) {
                if(traceHasBarsOrFill(gd._fullData[i], subplot)) {
                    hasBarsOrFill = true;
                    break;
                }
            }
            var rng = Lib.simpleMap(ax.range, ax.r2l),
                showZl = (rng[0] * rng[1] <= 0) && ax.zeroline &&
                (ax.type === 'linear' || ax.type === '-') && gridvals.length &&
                (hasBarsOrFill || clipEnds({x: 0}) || !ax.showline);
            var zl = zlcontainer.selectAll('path.' + zcls)
                .data(showZl ? [{x: 0}] : []);
            zl.enter().append('path').classed(zcls, 1).classed('zl', 1)
                .classed('crisp', 1)
                .attr('d', gridpath);
            zl.attr('transform', transfn)
                .call(Color.stroke, ax.zerolinecolor || Color.defaultLine)
                .style('stroke-width', zeroLineWidth + 'px');
            zl.exit().remove();
        }
    }

    if(independent) {
        drawTicks(ax._axislayer, tickpathfn(ax._pos + pad * ticksign[2], ticksign[2] * ax.ticklen));
        if(ax._counteraxis) {
            var fictionalPlotinfo = {
                gridlayer: ax._gridlayer,
                zerolinelayer: ax._zerolinelayer
            };
            drawGrid(fictionalPlotinfo, ax._counteraxis);
        }
        return drawLabels(ax._axislayer, ax._pos);
    }
    else {
        subplots = axes.getSubplots(gd, ax);
        var alldone = subplots.map(function(subplot) {
            var plotinfo = fullLayout._plots[subplot];

            if(!fullLayout._has('cartesian')) return;

            var container = plotinfo[axLetter + 'axislayer'],

                // [bottom or left, top or right, free, main]
                linepositions = ax._linepositions[subplot] || [],
                counteraxis = plotinfo[counterLetter + 'axis'],
                mainSubplot = counteraxis._id === ax.anchor,
                ticksides = [false, false, false],
                tickpath = '';

            // ticks
            if(ax.mirror === 'allticks') ticksides = [true, true, false];
            else if(mainSubplot) {
                if(ax.mirror === 'ticks') ticksides = [true, true, false];
                else ticksides[sides.indexOf(axside)] = true;
            }
            if(ax.mirrors) {
                for(i = 0; i < 2; i++) {
                    var thisMirror = ax.mirrors[counteraxis._id + sides[i]];
                    if(thisMirror === 'ticks' || thisMirror === 'labels') {
                        ticksides[i] = true;
                    }
                }
            }

            // free axis ticks
            if(linepositions[2] !== undefined) ticksides[2] = true;

            ticksides.forEach(function(showside, sidei) {
                var pos = linepositions[sidei],
                    tsign = ticksign[sidei];
                if(showside && isNumeric(pos)) {
                    tickpath += tickpathfn(pos + pad * tsign, tsign * ax.ticklen);
                }
            });

            drawTicks(container, tickpath);
            drawGrid(plotinfo, counteraxis, subplot);
            return drawLabels(container, linepositions[3]);
        }).filter(function(onedone) { return onedone && onedone.then; });

        return alldone.length ? Promise.all(alldone) : 0;
    }
};

// swap all the presentation attributes of the axes showing these traces
axes.swap = function(gd, traces) {
    var axGroups = makeAxisGroups(gd, traces);

    for(var i = 0; i < axGroups.length; i++) {
        swapAxisGroup(gd, axGroups[i].x, axGroups[i].y);
    }
};

function makeAxisGroups(gd, traces) {
    var groups = [],
        i,
        j;

    for(i = 0; i < traces.length; i++) {
        var groupsi = [],
            xi = gd._fullData[traces[i]].xaxis,
            yi = gd._fullData[traces[i]].yaxis;
        if(!xi || !yi) continue; // not a 2D cartesian trace?

        for(j = 0; j < groups.length; j++) {
            if(groups[j].x.indexOf(xi) !== -1 || groups[j].y.indexOf(yi) !== -1) {
                groupsi.push(j);
            }
        }

        if(!groupsi.length) {
            groups.push({x: [xi], y: [yi]});
            continue;
        }

        var group0 = groups[groupsi[0]],
            groupj;

        if(groupsi.length > 1) {
            for(j = 1; j < groupsi.length; j++) {
                groupj = groups[groupsi[j]];
                mergeAxisGroups(group0.x, groupj.x);
                mergeAxisGroups(group0.y, groupj.y);
            }
        }
        mergeAxisGroups(group0.x, [xi]);
        mergeAxisGroups(group0.y, [yi]);
    }

    return groups;
}

function mergeAxisGroups(intoSet, fromSet) {
    for(var i = 0; i < fromSet.length; i++) {
        if(intoSet.indexOf(fromSet[i]) === -1) intoSet.push(fromSet[i]);
    }
}

function swapAxisGroup(gd, xIds, yIds) {
    var i,
        j,
        xFullAxes = [],
        yFullAxes = [],
        layout = gd.layout;

    for(i = 0; i < xIds.length; i++) xFullAxes.push(axes.getFromId(gd, xIds[i]));
    for(i = 0; i < yIds.length; i++) yFullAxes.push(axes.getFromId(gd, yIds[i]));

    var allAxKeys = Object.keys(xFullAxes[0]),
        noSwapAttrs = [
            'anchor', 'domain', 'overlaying', 'position', 'side', 'tickangle'
        ],
        numericTypes = ['linear', 'log'];

    for(i = 0; i < allAxKeys.length; i++) {
        var keyi = allAxKeys[i],
            xVal = xFullAxes[0][keyi],
            yVal = yFullAxes[0][keyi],
            allEqual = true,
            coerceLinearX = false,
            coerceLinearY = false;
        if(keyi.charAt(0) === '_' || typeof xVal === 'function' ||
                noSwapAttrs.indexOf(keyi) !== -1) {
            continue;
        }
        for(j = 1; j < xFullAxes.length && allEqual; j++) {
            var xVali = xFullAxes[j][keyi];
            if(keyi === 'type' && numericTypes.indexOf(xVal) !== -1 &&
                    numericTypes.indexOf(xVali) !== -1 && xVal !== xVali) {
                // type is special - if we find a mixture of linear and log,
                // coerce them all to linear on flipping
                coerceLinearX = true;
            }
            else if(xVali !== xVal) allEqual = false;
        }
        for(j = 1; j < yFullAxes.length && allEqual; j++) {
            var yVali = yFullAxes[j][keyi];
            if(keyi === 'type' && numericTypes.indexOf(yVal) !== -1 &&
                    numericTypes.indexOf(yVali) !== -1 && yVal !== yVali) {
                // type is special - if we find a mixture of linear and log,
                // coerce them all to linear on flipping
                coerceLinearY = true;
            }
            else if(yFullAxes[j][keyi] !== yVal) allEqual = false;
        }
        if(allEqual) {
            if(coerceLinearX) layout[xFullAxes[0]._name].type = 'linear';
            if(coerceLinearY) layout[yFullAxes[0]._name].type = 'linear';
            swapAxisAttrs(layout, keyi, xFullAxes, yFullAxes);
        }
    }

    // now swap x&y for any annotations anchored to these x & y
    for(i = 0; i < gd._fullLayout.annotations.length; i++) {
        var ann = gd._fullLayout.annotations[i];
        if(xIds.indexOf(ann.xref) !== -1 &&
                yIds.indexOf(ann.yref) !== -1) {
            Lib.swapAttrs(layout.annotations[i], ['?']);
        }
    }
}

function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
    // in case the value is the default for either axis,
    // look at the first axis in each list and see if
    // this key's value is undefined
    var np = Lib.nestedProperty,
        xVal = np(layout[xFullAxes[0]._name], key).get(),
        yVal = np(layout[yFullAxes[0]._name], key).get(),
        i;
    if(key === 'title') {
        // special handling of placeholder titles
        if(xVal === 'Click to enter X axis title') {
            xVal = 'Click to enter Y axis title';
        }
        if(yVal === 'Click to enter Y axis title') {
            yVal = 'Click to enter X axis title';
        }
    }

    for(i = 0; i < xFullAxes.length; i++) {
        np(layout, xFullAxes[i]._name + '.' + key).set(yVal);
    }
    for(i = 0; i < yFullAxes.length; i++) {
        np(layout, yFullAxes[i]._name + '.' + key).set(xVal);
    }
}

},{"../../components/color":233,"../../components/drawing":257,"../../components/titles":323,"../../constants/alignment":330,"../../constants/numerical":334,"../../lib":353,"../../lib/svg_text_utils":375,"../../registry":436,"./axis_autotype":397,"./axis_ids":399,"./layout_attributes":407,"./layout_defaults":408,"./set_convert":413,"d3":62,"fast-isnumeric":68}],397:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var BADNUM = require('../../constants/numerical').BADNUM;

module.exports = function autoType(array, calendar) {
    if(moreDates(array, calendar)) return 'date';
    if(category(array)) return 'category';
    if(linearOK(array)) return 'linear';
    else return '-';
};

// is there at least one number in array? If not, we should leave
// ax.type empty so it can be autoset later
function linearOK(array) {
    if(!array) return false;

    for(var i = 0; i < array.length; i++) {
        if(isNumeric(array[i])) return true;
    }

    return false;
}

// does the array a have mostly dates rather than numbers?
// note: some values can be neither (such as blanks, text)
// 2- or 4-digit integers can be both, so require twice as many
// dates as non-dates, to exclude cases with mostly 2 & 4 digit
// numbers and a few dates
function moreDates(a, calendar) {
    var dcnt = 0,
        ncnt = 0,
        // test at most 1000 points, evenly spaced
        inc = Math.max(1, (a.length - 1) / 1000),
        ai;

    for(var i = 0; i < a.length; i += inc) {
        ai = a[Math.round(i)];
        if(Lib.isDateTime(ai, calendar)) dcnt += 1;
        if(isNumeric(ai)) ncnt += 1;
    }

    return (dcnt > ncnt * 2);
}

// are the (x,y)-values in gd.data mostly text?
// require twice as many categories as numbers
function category(a) {
    // test at most 1000 points
    var inc = Math.max(1, (a.length - 1) / 1000),
        curvenums = 0,
        curvecats = 0,
        ai;

    for(var i = 0; i < a.length; i += inc) {
        ai = a[Math.round(i)];
        if(Lib.cleanNumber(ai) !== BADNUM) curvenums++;
        else if(typeof ai === 'string' && ai !== '' && ai !== 'None') curvecats++;
    }

    return curvecats > curvenums * 2;
}

},{"../../constants/numerical":334,"../../lib":353,"fast-isnumeric":68}],398:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var colorMix = require('tinycolor2').mix;

var Registry = require('../../registry');
var Lib = require('../../lib');
var lightFraction = require('../../components/color/attributes').lightFraction;

var layoutAttributes = require('./layout_attributes');
var handleTickValueDefaults = require('./tick_value_defaults');
var handleTickMarkDefaults = require('./tick_mark_defaults');
var handleTickLabelDefaults = require('./tick_label_defaults');
var handleCategoryOrderDefaults = require('./category_order_defaults');
var setConvert = require('./set_convert');
var orderedCategories = require('./ordered_categories');


/**
 * options: object containing:
 *
 *  letter: 'x' or 'y'
 *  title: name of the axis (ie 'Colorbar') to go in default title
 *  font: the default font to inherit
 *  outerTicks: boolean, should ticks default to outside?
 *  showGrid: boolean, should gridlines be shown by default?
 *  noHover: boolean, this axis doesn't support hover effects?
 *  data: the plot data, used to manage categories
 *  bgColor: the plot background color, to calculate default gridline colors
 */
module.exports = function handleAxisDefaults(containerIn, containerOut, coerce, options, layoutOut) {
    var letter = options.letter,
        font = options.font || {},
        defaultTitle = 'Click to enter ' +
            (options.title || (letter.toUpperCase() + ' axis')) +
            ' title';

    function coerce2(attr, dflt) {
        return Lib.coerce2(containerIn, containerOut, layoutAttributes, attr, dflt);
    }

    var visible = coerce('visible', !options.cheateronly);

    var axType = containerOut.type;

    if(axType === 'date') {
        var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleDefaults');
        handleCalendarDefaults(containerIn, containerOut, 'calendar', options.calendar);
    }

    setConvert(containerOut, layoutOut);

    var autoRange = coerce('autorange', !containerOut.isValidRange(containerIn.range));

    if(autoRange) coerce('rangemode');

    coerce('range');
    containerOut.cleanRange();

    handleCategoryOrderDefaults(containerIn, containerOut, coerce);
    containerOut._initialCategories = axType === 'category' ?
        orderedCategories(letter, containerOut.categoryorder, containerOut.categoryarray, options.data) :
        [];

    if(!visible) return containerOut;

    var dfltColor = coerce('color');
    // if axis.color was provided, use it for fonts too; otherwise,
    // inherit from global font color in case that was provided.
    var dfltFontColor = (dfltColor === containerIn.color) ? dfltColor : font.color;

    coerce('title', defaultTitle);
    Lib.coerceFont(coerce, 'titlefont', {
        family: font.family,
        size: Math.round(font.size * 1.2),
        color: dfltFontColor
    });

    handleTickValueDefaults(containerIn, containerOut, coerce, axType);
    handleTickLabelDefaults(containerIn, containerOut, coerce, axType, options);
    handleTickMarkDefaults(containerIn, containerOut, coerce, options);

    var lineColor = coerce2('linecolor', dfltColor),
        lineWidth = coerce2('linewidth'),
        showLine = coerce('showline', !!lineColor || !!lineWidth);

    if(!showLine) {
        delete containerOut.linecolor;
        delete containerOut.linewidth;
    }

    if(showLine || containerOut.ticks) coerce('mirror');

    var gridColor = coerce2('gridcolor', colorMix(dfltColor, options.bgColor, lightFraction).toRgbString()),
        gridWidth = coerce2('gridwidth'),
        showGridLines = coerce('showgrid', options.showGrid || !!gridColor || !!gridWidth);

    if(!showGridLines) {
        delete containerOut.gridcolor;
        delete containerOut.gridwidth;
    }

    var zeroLineColor = coerce2('zerolinecolor', dfltColor),
        zeroLineWidth = coerce2('zerolinewidth'),
        showZeroLine = coerce('zeroline', options.showGrid || !!zeroLineColor || !!zeroLineWidth);

    if(!showZeroLine) {
        delete containerOut.zerolinecolor;
        delete containerOut.zerolinewidth;
    }

    return containerOut;
};

},{"../../components/color/attributes":232,"../../lib":353,"../../registry":436,"./category_order_defaults":400,"./layout_attributes":407,"./ordered_categories":409,"./set_convert":413,"./tick_label_defaults":414,"./tick_mark_defaults":415,"./tick_value_defaults":416,"tinycolor2":200}],399:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');
var Plots = require('../plots');
var Lib = require('../../lib');

var constants = require('./constants');


// convert between axis names (xaxis, xaxis2, etc, elements of gd.layout)
// and axis id's (x, x2, etc). Would probably have ditched 'xaxis'
// completely in favor of just 'x' if it weren't ingrained in the API etc.
exports.id2name = function id2name(id) {
    if(typeof id !== 'string' || !id.match(constants.AX_ID_PATTERN)) return;
    var axNum = id.substr(1);
    if(axNum === '1') axNum = '';
    return id.charAt(0) + 'axis' + axNum;
};

exports.name2id = function name2id(name) {
    if(!name.match(constants.AX_NAME_PATTERN)) return;
    var axNum = name.substr(5);
    if(axNum === '1') axNum = '';
    return name.charAt(0) + axNum;
};

exports.cleanId = function cleanId(id, axLetter) {
    if(!id.match(constants.AX_ID_PATTERN)) return;
    if(axLetter && id.charAt(0) !== axLetter) return;

    var axNum = id.substr(1).replace(/^0+/, '');
    if(axNum === '1') axNum = '';
    return id.charAt(0) + axNum;
};

// get all axis object names
// optionally restricted to only x or y or z by string axLetter
// and optionally 2D axes only, not those inside 3D scenes
function listNames(gd, axLetter, only2d) {
    var fullLayout = gd._fullLayout;
    if(!fullLayout) return [];

    function filterAxis(obj, extra) {
        var keys = Object.keys(obj),
            axMatch = /^[xyz]axis[0-9]*/,
            out = [];

        for(var i = 0; i < keys.length; i++) {
            var k = keys[i];
            if(axLetter && k.charAt(0) !== axLetter) continue;
            if(axMatch.test(k)) out.push(extra + k);
        }

        return out.sort();
    }

    var names = filterAxis(fullLayout, '');
    if(only2d) return names;

    var sceneIds3D = Plots.getSubplotIds(fullLayout, 'gl3d') || [];
    for(var i = 0; i < sceneIds3D.length; i++) {
        var sceneId = sceneIds3D[i];
        names = names.concat(
            filterAxis(fullLayout[sceneId], sceneId + '.')
        );
    }

    return names;
}

// get all axis objects, as restricted in listNames
exports.list = function(gd, axletter, only2d) {
    return listNames(gd, axletter, only2d)
        .map(function(axName) {
            return Lib.nestedProperty(gd._fullLayout, axName).get();
        });
};

// get all axis ids, optionally restricted by letter
// this only makes sense for 2d axes
exports.listIds = function(gd, axletter) {
    return listNames(gd, axletter, true).map(exports.name2id);
};

// get an axis object from its id 'x','x2' etc
// optionally, id can be a subplot (ie 'x2y3') and type gets x or y from it
exports.getFromId = function(gd, id, type) {
    var fullLayout = gd._fullLayout;

    if(type === 'x') id = id.replace(/y[0-9]*/, '');
    else if(type === 'y') id = id.replace(/x[0-9]*/, '');

    return fullLayout[exports.id2name(id)];
};

// get an axis object of specified type from the containing trace
exports.getFromTrace = function(gd, fullTrace, type) {
    var fullLayout = gd._fullLayout;
    var ax = null;

    if(Registry.traceIs(fullTrace, 'gl3d')) {
        var scene = fullTrace.scene;
        if(scene.substr(0, 5) === 'scene') {
            ax = fullLayout[scene][type + 'axis'];
        }
    }
    else {
        ax = exports.getFromId(gd, fullTrace[type + 'axis'] || type);
    }

    return ax;
};

},{"../../lib":353,"../../registry":436,"../plots":429,"./constants":401}],400:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = function handleCategoryOrderDefaults(containerIn, containerOut, coerce) {
    if(containerOut.type !== 'category') return;

    var arrayIn = containerIn.categoryarray,
        orderDefault;

    var isValidArray = (Array.isArray(arrayIn) && arrayIn.length > 0);

    // override default 'categoryorder' value when non-empty array is supplied
    if(isValidArray) orderDefault = 'array';

    var order = coerce('categoryorder', orderDefault);

    // coerce 'categoryarray' only in array order case
    if(order === 'array') coerce('categoryarray');

    // cannot set 'categoryorder' to 'array' with an invalid 'categoryarray'
    if(!isValidArray && order === 'array') {
        containerOut.categoryorder = 'trace';
    }
};

},{}],401:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';
var counterRegex = require('../../lib').counterRegex;


module.exports = {

    idRegex: {
        x: counterRegex('x'),
        y: counterRegex('y')
    },

    attrRegex: counterRegex('[xy]axis'),

    // axis match regular expression
    xAxisMatch: counterRegex('xaxis'),
    yAxisMatch: counterRegex('yaxis'),

    // pattern matching axis ids and names
    // note that this is more permissive than counterRegex, as
    // id2name, name2id, and cleanId accept "x1" etc
    AX_ID_PATTERN: /^[xyz][0-9]*$/,
    AX_NAME_PATTERN: /^[xyz]axis[0-9]*$/,

    // pixels to move mouse before you stop clamping to starting point
    MINDRAG: 8,

    // smallest dimension allowed for a select box
    MINSELECT: 12,

    // smallest dimension allowed for a zoombox
    MINZOOM: 20,

    // width of axis drag regions
    DRAGGERSIZE: 20,

    // max pixels off straight before a lasso select line counts as bent
    BENDPX: 1.5,

    // delay before a redraw (relayout) after smooth panning and zooming
    REDRAWDELAY: 50,

    // throttling limit (ms) for selectPoints calls
    SELECTDELAY: 100,

    // cache ID suffix for throttle
    SELECTID: '-select',

    // last resort axis ranges for x and y axes if we have no data
    DFLTRANGEX: [-1, 6],
    DFLTRANGEY: [-1, 4],

    // Layers to keep trace types in the right order.
    // from back to front:
    // 1. heatmaps, 2D histos and contour maps
    // 2. bars / 1D histos
    // 3. errorbars for bars and scatter
    // 4. scatter
    // 5. box plots
    traceLayerClasses: [
        'imagelayer',
        'maplayer',
        'barlayer',
        'carpetlayer',
        'boxlayer',
        'scatterlayer'
    ],

    layerValue2layerClass: {
        'above traces': 'above',
        'below traces': 'below'
    }
};

},{"../../lib":353}],402:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var id2name = require('./axis_ids').id2name;


module.exports = function handleConstraintDefaults(containerIn, containerOut, coerce, allAxisIds, layoutOut) {
    var constraintGroups = layoutOut._axisConstraintGroups;
    var thisID = containerOut._id;
    var letter = thisID.charAt(0);

    if(containerOut.fixedrange) return;

    // coerce the constraint mechanics even if this axis has no scaleanchor
    // because it may be the anchor of another axis.
    coerce('constrain');
    Lib.coerce(containerIn, containerOut, {
        constraintoward: {
            valType: 'enumerated',
            values: letter === 'x' ? ['left', 'center', 'right'] : ['bottom', 'middle', 'top'],
            dflt: letter === 'x' ? 'center' : 'middle'
        }
    }, 'constraintoward');

    if(!containerIn.scaleanchor) return;

    var constraintOpts = getConstraintOpts(constraintGroups, thisID, allAxisIds, layoutOut);

    var scaleanchor = Lib.coerce(containerIn, containerOut, {
        scaleanchor: {
            valType: 'enumerated',
            values: constraintOpts.linkableAxes
        }
    }, 'scaleanchor');

    if(scaleanchor) {
        var scaleratio = coerce('scaleratio');
        // TODO: I suppose I could do attribute.min: Number.MIN_VALUE to avoid zero,
        // but that seems hacky. Better way to say "must be a positive number"?
        // Of course if you use several super-tiny values you could eventually
        // force a product of these to zero and all hell would break loose...
        // Likewise with super-huge values.
        if(!scaleratio) scaleratio = containerOut.scaleratio = 1;

        updateConstraintGroups(constraintGroups, constraintOpts.thisGroup,
            thisID, scaleanchor, scaleratio);
    }
    else if(allAxisIds.indexOf(containerIn.scaleanchor) !== -1) {
        Lib.warn('ignored ' + containerOut._name + '.scaleanchor: "' +
            containerIn.scaleanchor + '" to avoid either an infinite loop ' +
            'and possibly inconsistent scaleratios, or because the target' +
            'axis has fixed range.');
    }
};

function getConstraintOpts(constraintGroups, thisID, allAxisIds, layoutOut) {
    // If this axis is already part of a constraint group, we can't
    // scaleanchor any other axis in that group, or we'd make a loop.
    // Filter allAxisIds to enforce this, also matching axis types.

    var thisType = layoutOut[id2name(thisID)].type;

    var i, j, idj, axj;

    var linkableAxes = [];
    for(j = 0; j < allAxisIds.length; j++) {
        idj = allAxisIds[j];
        if(idj === thisID) continue;

        axj = layoutOut[id2name(idj)];
        if(axj.type === thisType && !axj.fixedrange) linkableAxes.push(idj);
    }

    for(i = 0; i < constraintGroups.length; i++) {
        if(constraintGroups[i][thisID]) {
            var thisGroup = constraintGroups[i];

            var linkableAxesNoLoops = [];
            for(j = 0; j < linkableAxes.length; j++) {
                idj = linkableAxes[j];
                if(!thisGroup[idj]) linkableAxesNoLoops.push(idj);
            }
            return {linkableAxes: linkableAxesNoLoops, thisGroup: thisGroup};
        }
    }

    return {linkableAxes: linkableAxes, thisGroup: null};
}


/*
 * Add this axis to the axis constraint groups, which is the collection
 * of axes that are all constrained together on scale.
 *
 * constraintGroups: a list of objects. each object is
 * {axis_id: scale_within_group}, where scale_within_group is
 * only important relative to the rest of the group, and defines
 * the relative scales between all axes in the group
 *
 * thisGroup: the group the current axis is already in
 * thisID: the id if the current axis
 * scaleanchor: the id of the axis to scale it with
 * scaleratio: the ratio of this axis to the scaleanchor axis
 */
function updateConstraintGroups(constraintGroups, thisGroup, thisID, scaleanchor, scaleratio) {
    var i, j, groupi, keyj, thisGroupIndex;

    if(thisGroup === null) {
        thisGroup = {};
        thisGroup[thisID] = 1;
        thisGroupIndex = constraintGroups.length;
        constraintGroups.push(thisGroup);
    }
    else {
        thisGroupIndex = constraintGroups.indexOf(thisGroup);
    }

    var thisGroupKeys = Object.keys(thisGroup);

    // we know that this axis isn't in any other groups, but we don't know
    // about the scaleanchor axis. If it is, we need to merge the groups.
    for(i = 0; i < constraintGroups.length; i++) {
        groupi = constraintGroups[i];
        if(i !== thisGroupIndex && groupi[scaleanchor]) {
            var baseScale = groupi[scaleanchor];
            for(j = 0; j < thisGroupKeys.length; j++) {
                keyj = thisGroupKeys[j];
                groupi[keyj] = baseScale * scaleratio * thisGroup[keyj];
            }
            constraintGroups.splice(thisGroupIndex, 1);
            return;
        }
    }

    // otherwise, we insert the new scaleanchor axis as the base scale (1)
    // in its group, and scale the rest of the group to it
    if(scaleratio !== 1) {
        for(j = 0; j < thisGroupKeys.length; j++) {
            thisGroup[thisGroupKeys[j]] *= scaleratio;
        }
    }
    thisGroup[scaleanchor] = 1;
}

},{"../../lib":353,"./axis_ids":399}],403:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var id2name = require('./axis_ids').id2name;
var scaleZoom = require('./scale_zoom');

var ALMOST_EQUAL = require('../../constants/numerical').ALMOST_EQUAL;

var FROM_BL = require('../../constants/alignment').FROM_BL;


exports.enforce = function enforceAxisConstraints(gd) {
    var fullLayout = gd._fullLayout;
    var constraintGroups = fullLayout._axisConstraintGroups;

    var i, j, axisID, ax, normScale, mode, factor;

    for(i = 0; i < constraintGroups.length; i++) {
        var group = constraintGroups[i];
        var axisIDs = Object.keys(group);

        var minScale = Infinity;
        var maxScale = 0;
        // mostly matchScale will be the same as minScale
        // ie we expand axis ranges to encompass *everything*
        // that's currently in any of their ranges, but during
        // autorange of a subset of axes we will ignore other
        // axes for this purpose.
        var matchScale = Infinity;
        var normScales = {};
        var axes = {};
        var hasAnyDomainConstraint = false;

        // find the (normalized) scale of each axis in the group
        for(j = 0; j < axisIDs.length; j++) {
            axisID = axisIDs[j];
            axes[axisID] = ax = fullLayout[id2name(axisID)];

            if(ax._inputDomain) ax.domain = ax._inputDomain.slice();
            else ax._inputDomain = ax.domain.slice();

            if(!ax._inputRange) ax._inputRange = ax.range.slice();

            // set axis scale here so we can use _m rather than
            // having to calculate it from length and range
            ax.setScale();

            // abs: inverted scales still satisfy the constraint
            normScales[axisID] = normScale = Math.abs(ax._m) / group[axisID];
            minScale = Math.min(minScale, normScale);
            if(ax.constrain === 'domain' || !ax._constraintShrinkable) {
                matchScale = Math.min(matchScale, normScale);
            }

            // this has served its purpose, so remove it
            delete ax._constraintShrinkable;
            maxScale = Math.max(maxScale, normScale);

            if(ax.constrain === 'domain') hasAnyDomainConstraint = true;
        }

        // Do we have a constraint mismatch? Give a small buffer for rounding errors
        if(minScale > ALMOST_EQUAL * maxScale && !hasAnyDomainConstraint) continue;

        // now increase any ranges we need to until all normalized scales are equal
        for(j = 0; j < axisIDs.length; j++) {
            axisID = axisIDs[j];
            normScale = normScales[axisID];
            ax = axes[axisID];
            mode = ax.constrain;

            // even if the scale didn't change, if we're shrinking domain
            // we need to recalculate in case `constraintoward` changed
            if(normScale !== matchScale || mode === 'domain') {
                factor = normScale / matchScale;

                if(mode === 'range') {
                    scaleZoom(ax, factor);
                }
                else {
                    // mode === 'domain'

                    var inputDomain = ax._inputDomain;
                    var domainShrunk = (ax.domain[1] - ax.domain[0]) /
                        (inputDomain[1] - inputDomain[0]);
                    var rangeShrunk = (ax.r2l(ax.range[1]) - ax.r2l(ax.range[0])) /
                        (ax.r2l(ax._inputRange[1]) - ax.r2l(ax._inputRange[0]));

                    factor /= domainShrunk;

                    if(factor * rangeShrunk < 1) {
                        // we've asked to magnify the axis more than we can just by
                        // enlarging the domain - so we need to constrict range
                        ax.domain = ax._input.domain = inputDomain.slice();
                        scaleZoom(ax, factor);
                        continue;
                    }

                    if(rangeShrunk < 1) {
                        // the range has previously been constricted by ^^, but we've
                        // switched to the domain-constricted regime, so reset range
                        ax.range = ax._input.range = ax._inputRange.slice();
                        factor *= rangeShrunk;
                    }

                    if(ax.autorange && ax._min.length && ax._max.length) {
                        /*
                         * range & factor may need to change because range was
                         * calculated for the larger scaling, so some pixel
                         * paddings may get cut off when we reduce the domain.
                         *
                         * This is easier than the regular autorange calculation
                         * because we already know the scaling `m`, but we still
                         * need to cut out impossible constraints (like
                         * annotations with super-long arrows). That's what
                         * outerMin/Max are for - if the expansion was going to
                         * go beyond the original domain, it must be impossible
                         */
                        var rl0 = ax.r2l(ax.range[0]);
                        var rl1 = ax.r2l(ax.range[1]);
                        var rangeCenter = (rl0 + rl1) / 2;
                        var rangeMin = rangeCenter;
                        var rangeMax = rangeCenter;
                        var halfRange = Math.abs(rl1 - rangeCenter);
                        // extra tiny bit for rounding errors, in case we actually
                        // *are* expanding to the full domain
                        var outerMin = rangeCenter - halfRange * factor * 1.0001;
                        var outerMax = rangeCenter + halfRange * factor * 1.0001;

                        updateDomain(ax, factor);
                        ax.setScale();
                        var m = Math.abs(ax._m);
                        var newVal;
                        var k;

                        for(k = 0; k < ax._min.length; k++) {
                            newVal = ax._min[k].val - ax._min[k].pad / m;
                            if(newVal > outerMin && newVal < rangeMin) {
                                rangeMin = newVal;
                            }
                        }

                        for(k = 0; k < ax._max.length; k++) {
                            newVal = ax._max[k].val + ax._max[k].pad / m;
                            if(newVal < outerMax && newVal > rangeMax) {
                                rangeMax = newVal;
                            }
                        }

                        var domainExpand = (rangeMax - rangeMin) / (2 * halfRange);
                        factor /= domainExpand;

                        rangeMin = ax.l2r(rangeMin);
                        rangeMax = ax.l2r(rangeMax);
                        ax.range = ax._input.range = (rl0 < rl1) ?
                            [rangeMin, rangeMax] : [rangeMax, rangeMin];
                    }

                    updateDomain(ax, factor);
                }
            }
        }
    }
};

// For use before autoranging, check if this axis was previously constrained
// by domain but no longer is
exports.clean = function cleanConstraints(gd, ax) {
    if(ax._inputDomain) {
        var isConstrained = false;
        var axId = ax._id;
        var constraintGroups = gd._fullLayout._axisConstraintGroups;
        for(var j = 0; j < constraintGroups.length; j++) {
            if(constraintGroups[j][axId]) {
                isConstrained = true;
                break;
            }
        }
        if(!isConstrained || ax.constrain !== 'domain') {
            ax._input.domain = ax.domain = ax._inputDomain;
            delete ax._inputDomain;
        }
    }
};

function updateDomain(ax, factor) {
    var inputDomain = ax._inputDomain;
    var centerFraction = FROM_BL[ax.constraintoward];
    var center = inputDomain[0] + (inputDomain[1] - inputDomain[0]) * centerFraction;

    ax.domain = ax._input.domain = [
        center + (inputDomain[0] - center) / factor,
        center + (inputDomain[1] - center) / factor
    ];
}

},{"../../constants/alignment":330,"../../constants/numerical":334,"./axis_ids":399,"./scale_zoom":411}],404:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');

var Plotly = require('../../plotly');
var Registry = require('../../registry');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var setCursor = require('../../lib/setcursor');
var dragElement = require('../../components/dragelement');
var FROM_TL = require('../../constants/alignment').FROM_TL;

var Plots = require('../plots');

var doTicks = require('./axes').doTicks;
var getFromId = require('./axis_ids').getFromId;
var prepSelect = require('./select');
var scaleZoom = require('./scale_zoom');

var constants = require('./constants');
var MINDRAG = constants.MINDRAG;
var MINZOOM = constants.MINZOOM;

// flag for showing "doubleclick to zoom out" only at the beginning
var SHOWZOOMOUTTIP = true;

// dragBox: create an element to drag one or more axis ends
// inputs:
//      plotinfo - which subplot are we making dragboxes on?
//      x,y,w,h - left, top, width, height of the box
//      ns - how does this drag the vertical axis?
//          'n' - top only
//          's' - bottom only
//          'ns' - top and bottom together, difference unchanged
//      ew - same for horizontal axis
module.exports = function dragBox(gd, plotinfo, x, y, w, h, ns, ew) {
    // mouseDown stores ms of first mousedown event in the last
    // DBLCLICKDELAY ms on the drag bars
    // numClicks stores how many mousedowns have been seen
    // within DBLCLICKDELAY so we can check for click or doubleclick events
    // dragged stores whether a drag has occurred, so we don't have to
    // redraw unnecessarily, ie if no move bigger than MINDRAG or MINZOOM px
    var fullLayout = gd._fullLayout,
        zoomlayer = gd._fullLayout._zoomlayer,
        isMainDrag = (ns + ew === 'nsew'),
        subplots,
        xa,
        ya,
        xs,
        ys,
        pw,
        ph,
        xActive,
        yActive,
        cursor,
        isSubplotConstrained,
        xaLinked,
        yaLinked;

    function recomputeAxisLists() {
        xa = [plotinfo.xaxis];
        ya = [plotinfo.yaxis];
        var xa0 = xa[0];
        var ya0 = ya[0];
        pw = xa0._length;
        ph = ya0._length;

        var constraintGroups = fullLayout._axisConstraintGroups;
        var xIDs = [xa0._id];
        var yIDs = [ya0._id];

        // if we're dragging two axes at once, also drag overlays
        subplots = [plotinfo].concat((ns && ew) ? plotinfo.overlays : []);

        for(var i = 1; i < subplots.length; i++) {
            var subplotXa = subplots[i].xaxis,
                subplotYa = subplots[i].yaxis;

            if(xa.indexOf(subplotXa) === -1) {
                xa.push(subplotXa);
                xIDs.push(subplotXa._id);
            }

            if(ya.indexOf(subplotYa) === -1) {
                ya.push(subplotYa);
                yIDs.push(subplotYa._id);
            }
        }

        xActive = isDirectionActive(xa, ew);
        yActive = isDirectionActive(ya, ns);
        cursor = getDragCursor(yActive + xActive, fullLayout.dragmode);
        xs = xa0._offset;
        ys = ya0._offset;

        var links = calcLinks(constraintGroups, xIDs, yIDs);
        isSubplotConstrained = links.xy;

        // finally make the list of axis objects to link
        xaLinked = [];
        for(var xLinkID in links.x) { xaLinked.push(getFromId(gd, xLinkID)); }
        yaLinked = [];
        for(var yLinkID in links.y) { yaLinked.push(getFromId(gd, yLinkID)); }
    }

    recomputeAxisLists();

    var dragger = makeDragger(plotinfo, ns + ew + 'drag', cursor, x, y, w, h);

    // still need to make the element if the axes are disabled
    // but nuke its events (except for maindrag which needs them for hover)
    // and stop there
    if(!yActive && !xActive && !isSelectOrLasso(fullLayout.dragmode)) {
        dragger.onmousedown = null;
        dragger.style.pointerEvents = isMainDrag ? 'all' : 'none';
        return dragger;
    }

    var dragOptions = {
        element: dragger,
        gd: gd,
        plotinfo: plotinfo,
        prepFn: function(e, startX, startY) {
            var dragModeNow = gd._fullLayout.dragmode;

            if(isMainDrag) {
                // main dragger handles all drag modes, and changes
                // to pan (or to zoom if it already is pan) on shift
                if(e.shiftKey) {
                    if(dragModeNow === 'pan') dragModeNow = 'zoom';
                    else dragModeNow = 'pan';
                }
            }
            // all other draggers just pan
            else dragModeNow = 'pan';

            if(dragModeNow === 'lasso') dragOptions.minDrag = 1;
            else dragOptions.minDrag = undefined;

            if(dragModeNow === 'zoom') {
                dragOptions.moveFn = zoomMove;
                dragOptions.doneFn = zoomDone;

                // zoomMove takes care of the threshold, but we need to
                // minimize this so that constrained zoom boxes will flip
                // orientation at the right place
                dragOptions.minDrag = 1;

                zoomPrep(e, startX, startY);
            }
            else if(dragModeNow === 'pan') {
                dragOptions.moveFn = plotDrag;
                dragOptions.doneFn = dragDone;
                clearSelect(zoomlayer);
            }
            else if(isSelectOrLasso(dragModeNow)) {
                dragOptions.xaxes = xa;
                dragOptions.yaxes = ya;
                prepSelect(e, startX, startY, dragOptions, dragModeNow);
            }
        }
    };

    dragElement.init(dragOptions);

    var x0,
        y0,
        box,
        lum,
        path0,
        dimmed,
        zoomMode,
        zb,
        corners;

    // collected changes to be made to the plot by relayout at the end
    var updates = {};

    function zoomPrep(e, startX, startY) {
        var dragBBox = dragger.getBoundingClientRect();
        x0 = startX - dragBBox.left;
        y0 = startY - dragBBox.top;
        box = {l: x0, r: x0, w: 0, t: y0, b: y0, h: 0};
        lum = gd._hmpixcount ?
            (gd._hmlumcount / gd._hmpixcount) :
            tinycolor(gd._fullLayout.plot_bgcolor).getLuminance();
        path0 = 'M0,0H' + pw + 'V' + ph + 'H0V0';
        dimmed = false;
        zoomMode = 'xy';

        zb = makeZoombox(zoomlayer, lum, xs, ys, path0);

        corners = makeCorners(zoomlayer, xs, ys);

        clearSelect(zoomlayer);
    }

    function zoomMove(dx0, dy0) {
        if(gd._transitioningWithDuration) {
            return false;
        }

        var x1 = Math.max(0, Math.min(pw, dx0 + x0)),
            y1 = Math.max(0, Math.min(ph, dy0 + y0)),
            dx = Math.abs(x1 - x0),
            dy = Math.abs(y1 - y0);

        box.l = Math.min(x0, x1);
        box.r = Math.max(x0, x1);
        box.t = Math.min(y0, y1);
        box.b = Math.max(y0, y1);

        function noZoom() {
            zoomMode = '';
            box.r = box.l;
            box.t = box.b;
            corners.attr('d', 'M0,0Z');
        }

        if(isSubplotConstrained) {
            if(dx > MINZOOM || dy > MINZOOM) {
                zoomMode = 'xy';
                if(dx / pw > dy / ph) {
                    dy = dx * ph / pw;
                    if(y0 > y1) box.t = y0 - dy;
                    else box.b = y0 + dy;
                }
                else {
                    dx = dy * pw / ph;
                    if(x0 > x1) box.l = x0 - dx;
                    else box.r = x0 + dx;
                }
                corners.attr('d', xyCorners(box));
            }
            else {
                noZoom();
            }
        }
        // look for small drags in one direction or the other,
        // and only drag the other axis
        else if(!yActive || dy < Math.min(Math.max(dx * 0.6, MINDRAG), MINZOOM)) {
            if(dx < MINDRAG) {
                noZoom();
            }
            else {
                box.t = 0;
                box.b = ph;
                zoomMode = 'x';
                corners.attr('d', xCorners(box, y0));
            }
        }
        else if(!xActive || dx < Math.min(dy * 0.6, MINZOOM)) {
            box.l = 0;
            box.r = pw;
            zoomMode = 'y';
            corners.attr('d', yCorners(box, x0));
        }
        else {
            zoomMode = 'xy';
            corners.attr('d', xyCorners(box));
        }
        box.w = box.r - box.l;
        box.h = box.b - box.t;

        updateZoombox(zb, corners, box, path0, dimmed, lum);
        dimmed = true;
    }

    function zoomDone(dragged, numClicks) {
        if(Math.min(box.h, box.w) < MINDRAG * 2) {
            if(numClicks === 2) doubleClick();

            return removeZoombox(gd);
        }

        // TODO: edit linked axes in zoomAxRanges and in dragTail
        if(zoomMode === 'xy' || zoomMode === 'x') zoomAxRanges(xa, box.l / pw, box.r / pw, updates, xaLinked);
        if(zoomMode === 'xy' || zoomMode === 'y') zoomAxRanges(ya, (ph - box.b) / ph, (ph - box.t) / ph, updates, yaLinked);

        removeZoombox(gd);
        dragTail(zoomMode);

        if(SHOWZOOMOUTTIP && gd.data && gd._context.showTips) {
            Lib.notifier('Double-click to<br>zoom back out', 'long');
            SHOWZOOMOUTTIP = false;
        }
    }

    function dragDone(dragged, numClicks) {
        var singleEnd = (ns + ew).length === 1;
        if(dragged) dragTail();
        else if(numClicks === 2 && !singleEnd) doubleClick();
        else if(numClicks === 1 && singleEnd) {
            var ax = ns ? ya[0] : xa[0],
                end = (ns === 's' || ew === 'w') ? 0 : 1,
                attrStr = ax._name + '.range[' + end + ']',
                initialText = getEndText(ax, end),
                hAlign = 'left',
                vAlign = 'middle';

            if(ax.fixedrange) return;

            if(ns) {
                vAlign = (ns === 'n') ? 'top' : 'bottom';
                if(ax.side === 'right') hAlign = 'right';
            }
            else if(ew === 'e') hAlign = 'right';

            if(gd._context.showAxisRangeEntryBoxes) {
                d3.select(dragger)
                    .call(svgTextUtils.makeEditable, {
                        gd: gd,
                        immediate: true,
                        background: fullLayout.paper_bgcolor,
                        text: String(initialText),
                        fill: ax.tickfont ? ax.tickfont.color : '#444',
                        horizontalAlign: hAlign,
                        verticalAlign: vAlign
                    })
                    .on('edit', function(text) {
                        var v = ax.d2r(text);
                        if(v !== undefined) {
                            Plotly.relayout(gd, attrStr, v);
                        }
                    });
            }
        }
    }

    // scroll zoom, on all draggers except corners
    var scrollViewBox = [0, 0, pw, ph];
    // wait a little after scrolling before redrawing
    var redrawTimer = null;
    var REDRAWDELAY = constants.REDRAWDELAY;
    var mainplot = plotinfo.mainplot ?
            fullLayout._plots[plotinfo.mainplot] : plotinfo;

    function zoomWheel(e) {
        // deactivate mousewheel scrolling on embedded graphs
        // devs can override this with layout._enablescrollzoom,
        // but _ ensures this setting won't leave their page
        if(!gd._context.scrollZoom && !fullLayout._enablescrollzoom) {
            return;
        }

        // If a transition is in progress, then disable any behavior:
        if(gd._transitioningWithDuration) {
            return Lib.pauseEvent(e);
        }

        var pc = gd.querySelector('.plotly');

        recomputeAxisLists();

        // if the plot has scrollbars (more than a tiny excess)
        // disable scrollzoom too.
        if(pc.scrollHeight - pc.clientHeight > 10 ||
                pc.scrollWidth - pc.clientWidth > 10) {
            return;
        }

        clearTimeout(redrawTimer);

        var wheelDelta = -e.deltaY;
        if(!isFinite(wheelDelta)) wheelDelta = e.wheelDelta / 10;
        if(!isFinite(wheelDelta)) {
            Lib.log('Did not find wheel motion attributes: ', e);
            return;
        }

        var zoom = Math.exp(-Math.min(Math.max(wheelDelta, -20), 20) / 200),
            gbb = mainplot.draglayer.select('.nsewdrag')
                .node().getBoundingClientRect(),
            xfrac = (e.clientX - gbb.left) / gbb.width,
            yfrac = (gbb.bottom - e.clientY) / gbb.height,
            i;

        function zoomWheelOneAxis(ax, centerFraction, zoom) {
            if(ax.fixedrange) return;

            var axRange = Lib.simpleMap(ax.range, ax.r2l),
                v0 = axRange[0] + (axRange[1] - axRange[0]) * centerFraction;
            function doZoom(v) { return ax.l2r(v0 + (v - v0) * zoom); }
            ax.range = axRange.map(doZoom);
        }

        if(ew || isSubplotConstrained) {
            // if we're only zooming this axis because of constraints,
            // zoom it about the center
            if(!ew) xfrac = 0.5;

            for(i = 0; i < xa.length; i++) zoomWheelOneAxis(xa[i], xfrac, zoom);

            scrollViewBox[2] *= zoom;
            scrollViewBox[0] += scrollViewBox[2] * xfrac * (1 / zoom - 1);
        }
        if(ns || isSubplotConstrained) {
            if(!ns) yfrac = 0.5;

            for(i = 0; i < ya.length; i++) zoomWheelOneAxis(ya[i], yfrac, zoom);

            scrollViewBox[3] *= zoom;
            scrollViewBox[1] += scrollViewBox[3] * (1 - yfrac) * (1 / zoom - 1);
        }

        // viewbox redraw at first
        updateSubplots(scrollViewBox);
        ticksAndAnnotations(ns, ew);

        // then replot after a delay to make sure
        // no more scrolling is coming
        redrawTimer = setTimeout(function() {
            scrollViewBox = [0, 0, pw, ph];

            var zoomMode;
            if(isSubplotConstrained) zoomMode = 'xy';
            else zoomMode = (ew ? 'x' : '') + (ns ? 'y' : '');

            dragTail(zoomMode);
        }, REDRAWDELAY);

        return Lib.pauseEvent(e);
    }

    // everything but the corners gets wheel zoom
    if(ns.length * ew.length !== 1) {
        // still seems to be some confusion about onwheel vs onmousewheel...
        if(dragger.onwheel !== undefined) dragger.onwheel = zoomWheel;
        else if(dragger.onmousewheel !== undefined) dragger.onmousewheel = zoomWheel;
    }

    // plotDrag: move the plot in response to a drag
    function plotDrag(dx, dy) {
        // If a transition is in progress, then disable any behavior:
        if(gd._transitioningWithDuration) {
            return;
        }

        recomputeAxisLists();

        if(xActive === 'ew' || yActive === 'ns') {
            if(xActive) dragAxList(xa, dx);
            if(yActive) dragAxList(ya, dy);
            updateSubplots([xActive ? -dx : 0, yActive ? -dy : 0, pw, ph]);
            ticksAndAnnotations(yActive, xActive);
            return;
        }

        // dz: set a new value for one end (0 or 1) of an axis array axArray,
        // and return a pixel shift for that end for the viewbox
        // based on pixel drag distance d
        // TODO: this makes (generally non-fatal) errors when you get
        // near floating point limits
        function dz(axArray, end, d) {
            var otherEnd = 1 - end,
                movedAx,
                newLinearizedEnd;
            for(var i = 0; i < axArray.length; i++) {
                var axi = axArray[i];
                if(axi.fixedrange) continue;
                movedAx = axi;
                newLinearizedEnd = axi._rl[otherEnd] +
                    (axi._rl[end] - axi._rl[otherEnd]) / dZoom(d / axi._length);
                var newEnd = axi.l2r(newLinearizedEnd);

                // if l2r comes back false or undefined, it means we've dragged off
                // the end of valid ranges - so stop.
                if(newEnd !== false && newEnd !== undefined) axi.range[end] = newEnd;
            }
            return movedAx._length * (movedAx._rl[end] - newLinearizedEnd) /
                (movedAx._rl[end] - movedAx._rl[otherEnd]);
        }

        if(isSubplotConstrained && xActive && yActive) {
            // dragging a corner of a constrained subplot:
            // respect the fixed corner, but harmonize dx and dy
            var dxySign = ((xActive === 'w') === (yActive === 'n')) ? 1 : -1;
            var dxyFraction = (dx / pw + dxySign * dy / ph) / 2;
            dx = dxyFraction * pw;
            dy = dxySign * dxyFraction * ph;
        }

        if(xActive === 'w') dx = dz(xa, 0, dx);
        else if(xActive === 'e') dx = dz(xa, 1, -dx);
        else if(!xActive) dx = 0;

        if(yActive === 'n') dy = dz(ya, 1, dy);
        else if(yActive === 's') dy = dz(ya, 0, -dy);
        else if(!yActive) dy = 0;

        var x0 = (xActive === 'w') ? dx : 0;
        var y0 = (yActive === 'n') ? dy : 0;

        if(isSubplotConstrained) {
            var i;
            if(!xActive && yActive.length === 1) {
                // dragging one end of the y axis of a constrained subplot
                // scale the other axis the same about its middle
                for(i = 0; i < xa.length; i++) {
                    xa[i].range = xa[i]._r.slice();
                    scaleZoom(xa[i], 1 - dy / ph);
                }
                dx = dy * pw / ph;
                x0 = dx / 2;
            }
            if(!yActive && xActive.length === 1) {
                for(i = 0; i < ya.length; i++) {
                    ya[i].range = ya[i]._r.slice();
                    scaleZoom(ya[i], 1 - dx / pw);
                }
                dy = dx * ph / pw;
                y0 = dy / 2;
            }
        }

        updateSubplots([x0, y0, pw - dx, ph - dy]);
        ticksAndAnnotations(yActive, xActive);
    }

    // Draw ticks and annotations (and other components) when ranges change.
    // Also records the ranges that have changed for use by update at the end.
    function ticksAndAnnotations(ns, ew) {
        var activeAxIds = [],
            i;

        function pushActiveAxIds(axList) {
            for(i = 0; i < axList.length; i++) {
                if(!axList[i].fixedrange) activeAxIds.push(axList[i]._id);
            }
        }

        if(ew || isSubplotConstrained) {
            pushActiveAxIds(xa);
            pushActiveAxIds(xaLinked);
        }
        if(ns || isSubplotConstrained) {
            pushActiveAxIds(ya);
            pushActiveAxIds(yaLinked);
        }

        updates = {};
        for(i = 0; i < activeAxIds.length; i++) {
            var axId = activeAxIds[i];
            doTicks(gd, axId, true);
            var ax = getFromId(gd, axId);
            updates[ax._name + '.range[0]'] = ax.range[0];
            updates[ax._name + '.range[1]'] = ax.range[1];
        }

        function redrawObjs(objArray, method, shortCircuit) {
            for(i = 0; i < objArray.length; i++) {
                var obji = objArray[i];

                if((ew && activeAxIds.indexOf(obji.xref) !== -1) ||
                    (ns && activeAxIds.indexOf(obji.yref) !== -1)) {
                    method(gd, i);
                    // once is enough for images (which doesn't use the `i` arg anyway)
                    if(shortCircuit) return;
                }
            }
        }

        // annotations and shapes 'draw' method is slow,
        // use the finer-grained 'drawOne' method instead

        redrawObjs(fullLayout.annotations || [], Registry.getComponentMethod('annotations', 'drawOne'));
        redrawObjs(fullLayout.shapes || [], Registry.getComponentMethod('shapes', 'drawOne'));
        redrawObjs(fullLayout.images || [], Registry.getComponentMethod('images', 'draw'), true);
    }

    function doubleClick() {
        if(gd._transitioningWithDuration) return;

        var doubleClickConfig = gd._context.doubleClick,
            axList = (xActive ? xa : []).concat(yActive ? ya : []),
            attrs = {};

        var ax, i, rangeInitial;

        // For reset+autosize mode:
        // If *any* of the main axes is not at its initial range
        // (or autoranged, if we have no initial range, to match the logic in
        // doubleClickConfig === 'reset' below), we reset.
        // If they are *all* at their initial ranges, then we autosize.
        if(doubleClickConfig === 'reset+autosize') {

            doubleClickConfig = 'autosize';

            for(i = 0; i < axList.length; i++) {
                ax = axList[i];
                if((ax._rangeInitial && (
                        ax.range[0] !== ax._rangeInitial[0] ||
                        ax.range[1] !== ax._rangeInitial[1]
                    )) ||
                    (!ax._rangeInitial && !ax.autorange)
                ) {
                    doubleClickConfig = 'reset';
                    break;
                }
            }
        }

        if(doubleClickConfig === 'autosize') {
            // don't set the linked axes here, so relayout marks them as shrinkable
            // and we autosize just to the requested axis/axes
            for(i = 0; i < axList.length; i++) {
                ax = axList[i];
                if(!ax.fixedrange) attrs[ax._name + '.autorange'] = true;
            }
        }
        else if(doubleClickConfig === 'reset') {
            // when we're resetting, reset all linked axes too, so we get back
            // to the fully-auto-with-constraints situation
            if(xActive || isSubplotConstrained) axList = axList.concat(xaLinked);
            if(yActive && !isSubplotConstrained) axList = axList.concat(yaLinked);

            if(isSubplotConstrained) {
                if(!xActive) axList = axList.concat(xa);
                else if(!yActive) axList = axList.concat(ya);
            }

            for(i = 0; i < axList.length; i++) {
                ax = axList[i];

                if(!ax._rangeInitial) {
                    attrs[ax._name + '.autorange'] = true;
                }
                else {
                    rangeInitial = ax._rangeInitial;
                    attrs[ax._name + '.range[0]'] = rangeInitial[0];
                    attrs[ax._name + '.range[1]'] = rangeInitial[1];
                }
            }
        }

        gd.emit('plotly_doubleclick', null);
        Plotly.relayout(gd, attrs);
    }

    // dragTail - finish a drag event with a redraw
    function dragTail(zoommode) {
        if(zoommode === undefined) zoommode = (ew ? 'x' : '') + (ns ? 'y' : '');

        // put the subplot viewboxes back to default (Because we're going to)
        // be repositioning the data in the relayout. But DON'T call
        // ticksAndAnnotations again - it's unnecessary and would overwrite `updates`
        updateSubplots([0, 0, pw, ph]);

        // since we may have been redrawing some things during the drag, we may have
        // accumulated MathJax promises - wait for them before we relayout.
        Lib.syncOrAsync([
            Plots.previousPromises,
            function() { Plotly.relayout(gd, updates); }
        ], gd);
    }

    // updateSubplots - find all plot viewboxes that should be
    // affected by this drag, and update them. look for all plots
    // sharing an affected axis (including the one being dragged)
    function updateSubplots(viewBox) {
        var plotinfos = fullLayout._plots;
        var subplots = Object.keys(plotinfos);
        var xScaleFactor = viewBox[2] / xa[0]._length;
        var yScaleFactor = viewBox[3] / ya[0]._length;
        var editX = ew || isSubplotConstrained;
        var editY = ns || isSubplotConstrained;

        var i, xScaleFactor2, yScaleFactor2, clipDx, clipDy;

        // Find the appropriate scaling for this axis, if it's linked to the
        // dragged axes by constraints. 0 is special, it means this axis shouldn't
        // ever be scaled (will be converted to 1 if the other axis is scaled)
        function getLinkedScaleFactor(ax) {
            if(ax.fixedrange) return 0;

            if(editX && xaLinked.indexOf(ax) !== -1) {
                return xScaleFactor;
            }
            if(editY && (isSubplotConstrained ? xaLinked : yaLinked).indexOf(ax) !== -1) {
                return yScaleFactor;
            }
            return 0;
        }

        function scaleAndGetShift(ax, scaleFactor) {
            if(scaleFactor) {
                ax.range = ax._r.slice();
                scaleZoom(ax, scaleFactor);
                return getShift(ax, scaleFactor);
            }
            return 0;
        }

        function getShift(ax, scaleFactor) {
            return ax._length * (1 - scaleFactor) * FROM_TL[ax.constraintoward || 'middle'];
        }

        for(i = 0; i < subplots.length; i++) {

            var subplot = plotinfos[subplots[i]],
                xa2 = subplot.xaxis,
                ya2 = subplot.yaxis,
                editX2 = editX && !xa2.fixedrange && (xa.indexOf(xa2) !== -1),
                editY2 = editY && !ya2.fixedrange && (ya.indexOf(ya2) !== -1);

            if(editX2) {
                xScaleFactor2 = xScaleFactor;
                clipDx = ew ? viewBox[0] : getShift(xa2, xScaleFactor2);
            }
            else {
                xScaleFactor2 = getLinkedScaleFactor(xa2);
                clipDx = scaleAndGetShift(xa2, xScaleFactor2);
            }

            if(editY2) {
                yScaleFactor2 = yScaleFactor;
                clipDy = ns ? viewBox[1] : getShift(ya2, yScaleFactor2);
            }
            else {
                yScaleFactor2 = getLinkedScaleFactor(ya2);
                clipDy = scaleAndGetShift(ya2, yScaleFactor2);
            }

            // don't scale at all if neither axis is scalable here
            if(!xScaleFactor2 && !yScaleFactor2) continue;

            // but if only one is, reset the other axis scaling
            if(!xScaleFactor2) xScaleFactor2 = 1;
            if(!yScaleFactor2) yScaleFactor2 = 1;

            var plotDx = xa2._offset - clipDx / xScaleFactor2,
                plotDy = ya2._offset - clipDy / yScaleFactor2;

            fullLayout._defs.select('#' + subplot.clipId + '> rect')
                .call(Drawing.setTranslate, clipDx, clipDy)
                .call(Drawing.setScale, xScaleFactor2, yScaleFactor2);

            var scatterPoints = subplot.plot.selectAll('.scatterlayer .points, .boxlayer .points');

            subplot.plot
                .call(Drawing.setTranslate, plotDx, plotDy)
                .call(Drawing.setScale, 1 / xScaleFactor2, 1 / yScaleFactor2);

            // This is specifically directed at scatter traces, applying an inverse
            // scale to individual points to counteract the scale of the trace
            // as a whole:
            scatterPoints.selectAll('.point')
                .call(Drawing.setPointGroupScale, xScaleFactor2, yScaleFactor2)
                .call(Drawing.hideOutsideRangePoints, subplot);

            scatterPoints.selectAll('.textpoint')
                .call(Drawing.setTextPointsScale, xScaleFactor2, yScaleFactor2)
                .call(Drawing.hideOutsideRangePoints, subplot);
        }
    }

    return dragger;
};

function makeDragger(plotinfo, dragClass, cursor, x, y, w, h) {
    var dragger3 = plotinfo.draglayer.selectAll('.' + dragClass).data([0]);

    dragger3.enter().append('rect')
        .classed('drag', true)
        .classed(dragClass, true)
        .style({fill: 'transparent', 'stroke-width': 0})
        .attr('data-subplot', plotinfo.id);

    dragger3.call(Drawing.setRect, x, y, w, h)
        .call(setCursor, cursor);

    return dragger3.node();
}

function isDirectionActive(axList, activeVal) {
    for(var i = 0; i < axList.length; i++) {
        if(!axList[i].fixedrange) return activeVal;
    }
    return '';
}

function getEndText(ax, end) {
    var initialVal = ax.range[end],
        diff = Math.abs(initialVal - ax.range[1 - end]),
        dig;

    // TODO: this should basically be ax.r2d but we're doing extra
    // rounding here... can we clean up at all?
    if(ax.type === 'date') {
        return initialVal;
    }
    else if(ax.type === 'log') {
        dig = Math.ceil(Math.max(0, -Math.log(diff) / Math.LN10)) + 3;
        return d3.format('.' + dig + 'g')(Math.pow(10, initialVal));
    }
    else { // linear numeric (or category... but just show numbers here)
        dig = Math.floor(Math.log(Math.abs(initialVal)) / Math.LN10) -
            Math.floor(Math.log(diff) / Math.LN10) + 4;
        return d3.format('.' + String(dig) + 'g')(initialVal);
    }
}

function zoomAxRanges(axList, r0Fraction, r1Fraction, updates, linkedAxes) {
    var i,
        axi,
        axRangeLinear0,
        axRangeLinearSpan;

    for(i = 0; i < axList.length; i++) {
        axi = axList[i];
        if(axi.fixedrange) continue;

        axRangeLinear0 = axi._rl[0];
        axRangeLinearSpan = axi._rl[1] - axRangeLinear0;
        axi.range = [
            axi.l2r(axRangeLinear0 + axRangeLinearSpan * r0Fraction),
            axi.l2r(axRangeLinear0 + axRangeLinearSpan * r1Fraction)
        ];
        updates[axi._name + '.range[0]'] = axi.range[0];
        updates[axi._name + '.range[1]'] = axi.range[1];
    }

    // zoom linked axes about their centers
    if(linkedAxes && linkedAxes.length) {
        var linkedR0Fraction = (r0Fraction + (1 - r1Fraction)) / 2;

        zoomAxRanges(linkedAxes, linkedR0Fraction, 1 - linkedR0Fraction, updates);
    }
}

function dragAxList(axList, pix) {
    for(var i = 0; i < axList.length; i++) {
        var axi = axList[i];
        if(!axi.fixedrange) {
            axi.range = [
                axi.l2r(axi._rl[0] - pix / axi._m),
                axi.l2r(axi._rl[1] - pix / axi._m)
            ];
        }
    }
}

// common transform for dragging one end of an axis
// d>0 is compressing scale (cursor is over the plot,
//  the axis end should move with the cursor)
// d<0 is expanding (cursor is off the plot, axis end moves
//  nonlinearly so you can expand far)
function dZoom(d) {
    return 1 - ((d >= 0) ? Math.min(d, 0.9) :
        1 / (1 / Math.max(d, -0.3) + 3.222));
}

function getDragCursor(nsew, dragmode) {
    if(!nsew) return 'pointer';
    if(nsew === 'nsew') {
        if(dragmode === 'pan') return 'move';
        return 'crosshair';
    }
    return nsew.toLowerCase() + '-resize';
}

function makeZoombox(zoomlayer, lum, xs, ys, path0) {
    return zoomlayer.append('path')
        .attr('class', 'zoombox')
        .style({
            'fill': lum > 0.2 ? 'rgba(0,0,0,0)' : 'rgba(255,255,255,0)',
            'stroke-width': 0
        })
        .attr('transform', 'translate(' + xs + ', ' + ys + ')')
        .attr('d', path0 + 'Z');
}

function makeCorners(zoomlayer, xs, ys) {
    return zoomlayer.append('path')
        .attr('class', 'zoombox-corners')
        .style({
            fill: Color.background,
            stroke: Color.defaultLine,
            'stroke-width': 1,
            opacity: 0
        })
        .attr('transform', 'translate(' + xs + ', ' + ys + ')')
        .attr('d', 'M0,0Z');
}

function clearSelect(zoomlayer) {
    // until we get around to persistent selections, remove the outline
    // here. The selection itself will be removed when the plot redraws
    // at the end.
    zoomlayer.selectAll('.select-outline').remove();
}

function updateZoombox(zb, corners, box, path0, dimmed, lum) {
    zb.attr('d',
        path0 + 'M' + (box.l) + ',' + (box.t) + 'v' + (box.h) +
        'h' + (box.w) + 'v-' + (box.h) + 'h-' + (box.w) + 'Z');
    if(!dimmed) {
        zb.transition()
            .style('fill', lum > 0.2 ? 'rgba(0,0,0,0.4)' :
                'rgba(255,255,255,0.3)')
            .duration(200);
        corners.transition()
            .style('opacity', 1)
            .duration(200);
    }
}

function removeZoombox(gd) {
    d3.select(gd)
        .selectAll('.zoombox,.js-zoombox-backdrop,.js-zoombox-menu,.zoombox-corners')
        .remove();
}

function isSelectOrLasso(dragmode) {
    var modes = ['lasso', 'select'];

    return modes.indexOf(dragmode) !== -1;
}

function xCorners(box, y0) {
    return 'M' +
        (box.l - 0.5) + ',' + (y0 - MINZOOM - 0.5) +
        'h-3v' + (2 * MINZOOM + 1) + 'h3ZM' +
        (box.r + 0.5) + ',' + (y0 - MINZOOM - 0.5) +
        'h3v' + (2 * MINZOOM + 1) + 'h-3Z';
}

function yCorners(box, x0) {
    return 'M' +
        (x0 - MINZOOM - 0.5) + ',' + (box.t - 0.5) +
        'v-3h' + (2 * MINZOOM + 1) + 'v3ZM' +
        (x0 - MINZOOM - 0.5) + ',' + (box.b + 0.5) +
        'v3h' + (2 * MINZOOM + 1) + 'v-3Z';
}

function xyCorners(box) {
    var clen = Math.floor(Math.min(box.b - box.t, box.r - box.l, MINZOOM) / 2);
    return 'M' +
        (box.l - 3.5) + ',' + (box.t - 0.5 + clen) + 'h3v' + (-clen) +
            'h' + clen + 'v-3h-' + (clen + 3) + 'ZM' +
        (box.r + 3.5) + ',' + (box.t - 0.5 + clen) + 'h-3v' + (-clen) +
            'h' + (-clen) + 'v-3h' + (clen + 3) + 'ZM' +
        (box.r + 3.5) + ',' + (box.b + 0.5 - clen) + 'h-3v' + clen +
            'h' + (-clen) + 'v3h' + (clen + 3) + 'ZM' +
        (box.l - 3.5) + ',' + (box.b + 0.5 - clen) + 'h3v' + clen +
            'h' + clen + 'v3h-' + (clen + 3) + 'Z';
}

function calcLinks(constraintGroups, xIDs, yIDs) {
    var isSubplotConstrained = false;
    var xLinks = {};
    var yLinks = {};
    var i, j, k;

    var group, xLinkID, yLinkID;
    for(i = 0; i < constraintGroups.length; i++) {
        group = constraintGroups[i];
        // check if any of the x axes we're dragging is in this constraint group
        for(j = 0; j < xIDs.length; j++) {
            if(group[xIDs[j]]) {
                // put the rest of these axes into xLinks, if we're not already
                // dragging them, so we know to scale these axes automatically too
                // to match the changes in the dragged x axes
                for(xLinkID in group) {
                    if((xLinkID.charAt(0) === 'x' ? xIDs : yIDs).indexOf(xLinkID) === -1) {
                        xLinks[xLinkID] = 1;
                    }
                }

                // check if the x and y axes of THIS drag are linked
                for(k = 0; k < yIDs.length; k++) {
                    if(group[yIDs[k]]) isSubplotConstrained = true;
                }
            }
        }

        // now check if any of the y axes we're dragging is in this constraint group
        // only look for outside links, as we've already checked for links within the dragger
        for(j = 0; j < yIDs.length; j++) {
            if(group[yIDs[j]]) {
                for(yLinkID in group) {
                    if((yLinkID.charAt(0) === 'x' ? xIDs : yIDs).indexOf(yLinkID) === -1) {
                        yLinks[yLinkID] = 1;
                    }
                }
            }
        }
    }

    if(isSubplotConstrained) {
        // merge xLinks and yLinks if the subplot is constrained,
        // since we'll always apply both anyway and the two will contain
        // duplicates
        Lib.extendFlat(xLinks, yLinks);
        yLinks = {};
    }
    return {
        x: xLinks,
        y: yLinks,
        xy: isSubplotConstrained
    };
}

},{"../../components/color":233,"../../components/dragelement":254,"../../components/drawing":257,"../../constants/alignment":330,"../../lib":353,"../../lib/setcursor":371,"../../lib/svg_text_utils":375,"../../plotly":391,"../../registry":436,"../plots":429,"./axes":396,"./axis_ids":399,"./constants":401,"./scale_zoom":411,"./select":412,"d3":62,"tinycolor2":200}],405:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Fx = require('../../components/fx');
var dragElement = require('../../components/dragelement');

var constants = require('./constants');
var dragBox = require('./dragbox');

module.exports = function initInteractions(gd) {
    var fullLayout = gd._fullLayout;

    if((!fullLayout._has('cartesian') && !fullLayout._has('gl2d')) || gd._context.staticPlot) return;

    var subplots = Object.keys(fullLayout._plots || {}).sort(function(a, b) {
        // sort overlays last, then by x axis number, then y axis number
        if((fullLayout._plots[a].mainplot && true) ===
            (fullLayout._plots[b].mainplot && true)) {
            var aParts = a.split('y'),
                bParts = b.split('y');
            return (aParts[0] === bParts[0]) ?
                (Number(aParts[1] || 1) - Number(bParts[1] || 1)) :
                (Number(aParts[0] || 1) - Number(bParts[0] || 1));
        }
        return fullLayout._plots[a].mainplot ? 1 : -1;
    });

    subplots.forEach(function(subplot) {
        var plotinfo = fullLayout._plots[subplot];

        var xa = plotinfo.xaxis,
            ya = plotinfo.yaxis,

            // the y position of the main x axis line
            y0 = (xa._linepositions[subplot] || [])[3],

            // the x position of the main y axis line
            x0 = (ya._linepositions[subplot] || [])[3];

        var DRAGGERSIZE = constants.DRAGGERSIZE;
        if(isNumeric(y0) && xa.side === 'top') y0 -= DRAGGERSIZE;
        if(isNumeric(x0) && ya.side !== 'right') x0 -= DRAGGERSIZE;

        // main and corner draggers need not be repeated for
        // overlaid subplots - these draggers drag them all
        if(!plotinfo.mainplot) {
            // main dragger goes over the grids and data, so we use its
            // mousemove events for all data hover effects
            var maindrag = dragBox(gd, plotinfo, 0, 0,
                xa._length, ya._length, 'ns', 'ew');

            maindrag.onmousemove = function(evt) {
                // This is on `gd._fullLayout`, *not* fullLayout because the reference
                // changes by the time this is called again.
                gd._fullLayout._rehover = function() {
                    if(gd._fullLayout._hoversubplot === subplot) {
                        Fx.hover(gd, evt, subplot);
                    }
                };

                Fx.hover(gd, evt, subplot);

                // Note that we have *not* used the cached fullLayout variable here
                // since that may be outdated when this is called as a callback later on
                gd._fullLayout._lasthover = maindrag;
                gd._fullLayout._hoversubplot = subplot;
            };

            /*
             * IMPORTANT:
             * We must check for the presence of the drag cover here.
             * If we don't, a 'mouseout' event is triggered on the
             * maindrag before each 'click' event, which has the effect
             * of clearing the hoverdata; thus, cancelling the click event.
             */
            maindrag.onmouseout = function(evt) {
                if(gd._dragging) return;

                // When the mouse leaves this maindrag, unset the hovered subplot.
                // This may cause problems if it leaves the subplot directly *onto*
                // another subplot, but that's a tiny corner case at the moment.
                gd._fullLayout._hoversubplot = null;

                dragElement.unhover(gd, evt);
            };

            maindrag.onclick = function(evt) {
                Fx.click(gd, evt, subplot);
            };

            // corner draggers
            if(gd._context.showAxisDragHandles) {
                dragBox(gd, plotinfo, -DRAGGERSIZE, -DRAGGERSIZE,
                    DRAGGERSIZE, DRAGGERSIZE, 'n', 'w');
                dragBox(gd, plotinfo, xa._length, -DRAGGERSIZE,
                    DRAGGERSIZE, DRAGGERSIZE, 'n', 'e');
                dragBox(gd, plotinfo, -DRAGGERSIZE, ya._length,
                    DRAGGERSIZE, DRAGGERSIZE, 's', 'w');
                dragBox(gd, plotinfo, xa._length, ya._length,
                    DRAGGERSIZE, DRAGGERSIZE, 's', 'e');
            }
        }
        if(gd._context.showAxisDragHandles) {
            // x axis draggers - if you have overlaid plots,
            // these drag each axis separately
            if(isNumeric(y0)) {
                if(xa.anchor === 'free') y0 -= fullLayout._size.h * (1 - ya.domain[1]);
                dragBox(gd, plotinfo, xa._length * 0.1, y0,
                    xa._length * 0.8, DRAGGERSIZE, '', 'ew');
                dragBox(gd, plotinfo, 0, y0,
                    xa._length * 0.1, DRAGGERSIZE, '', 'w');
                dragBox(gd, plotinfo, xa._length * 0.9, y0,
                    xa._length * 0.1, DRAGGERSIZE, '', 'e');
            }
            // y axis draggers
            if(isNumeric(x0)) {
                if(ya.anchor === 'free') x0 -= fullLayout._size.w * xa.domain[0];
                dragBox(gd, plotinfo, x0, ya._length * 0.1,
                    DRAGGERSIZE, ya._length * 0.8, 'ns', '');
                dragBox(gd, plotinfo, x0, ya._length * 0.9,
                    DRAGGERSIZE, ya._length * 0.1, 's', '');
                dragBox(gd, plotinfo, x0, 0,
                    DRAGGERSIZE, ya._length * 0.1, 'n', '');
            }
        }
    });

    // In case you mousemove over some hovertext, send it to Fx.hover too
    // we do this so that we can put the hover text in front of everything,
    // but still be able to interact with everything as if it isn't there
    var hoverLayer = fullLayout._hoverlayer.node();

    hoverLayer.onmousemove = function(evt) {
        evt.target = fullLayout._lasthover;
        Fx.hover(gd, evt, fullLayout._hoversubplot);
    };

    hoverLayer.onclick = function(evt) {
        evt.target = fullLayout._lasthover;
        Fx.click(gd, evt);
    };

    // also delegate mousedowns... TODO: does this actually work?
    hoverLayer.onmousedown = function(evt) {
        fullLayout._lasthover.onmousedown(evt);
    };
};

},{"../../components/dragelement":254,"../../components/fx":274,"./constants":401,"./dragbox":404,"fast-isnumeric":68}],406:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var Lib = require('../../lib');
var Plots = require('../plots');

var axisIds = require('./axis_ids');
var constants = require('./constants');

exports.name = 'cartesian';

exports.attr = ['xaxis', 'yaxis'];

exports.idRoot = ['x', 'y'];

exports.idRegex = constants.idRegex;

exports.attrRegex = constants.attrRegex;

exports.attributes = require('./attributes');

exports.layoutAttributes = require('./layout_attributes');

exports.transitionAxes = require('./transition_axes');

exports.plot = function(gd, traces, transitionOpts, makeOnCompleteCallback) {
    var fullLayout = gd._fullLayout,
        subplots = Plots.getSubplotIds(fullLayout, 'cartesian'),
        calcdata = gd.calcdata,
        i;

    // If traces is not provided, then it's a complete replot and missing
    // traces are removed
    if(!Array.isArray(traces)) {
        traces = [];

        for(i = 0; i < calcdata.length; i++) {
            traces.push(i);
        }
    }

    for(i = 0; i < subplots.length; i++) {
        var subplot = subplots[i],
            subplotInfo = fullLayout._plots[subplot];

        // Get all calcdata for this subplot:
        var cdSubplot = [];
        var pcd;

        for(var j = 0; j < calcdata.length; j++) {
            var cd = calcdata[j],
                trace = cd[0].trace;

            // Skip trace if whitelist provided and it's not whitelisted:
            // if (Array.isArray(traces) && traces.indexOf(i) === -1) continue;
            if(trace.xaxis + trace.yaxis === subplot) {
                // XXX: Should trace carpet dependencies. Only replot all carpet plots if the carpet
                // axis has actually changed:
                //
                // If this trace is specifically requested, add it to the list:
                if(traces.indexOf(trace.index) !== -1 || trace.carpet) {
                    // Okay, so example: traces 0, 1, and 2 have fill = tonext. You animate
                    // traces 0 and 2. Trace 1 also needs to be updated, otherwise its fill
                    // is outdated. So this retroactively adds the previous trace if the
                    // traces are interdependent.
                    if(
                        pcd &&
                        pcd[0].trace.xaxis + pcd[0].trace.yaxis === subplot &&
                        ['tonextx', 'tonexty', 'tonext'].indexOf(trace.fill) !== -1 &&
                        cdSubplot.indexOf(pcd) === -1
                    ) {
                        cdSubplot.push(pcd);
                    }

                    cdSubplot.push(cd);
                }

                // Track the previous trace on this subplot for the retroactive-add step
                // above:
                pcd = cd;
            }
        }

        plotOne(gd, subplotInfo, cdSubplot, transitionOpts, makeOnCompleteCallback);
    }
};

function plotOne(gd, plotinfo, cdSubplot, transitionOpts, makeOnCompleteCallback) {
    var fullLayout = gd._fullLayout,
        modules = fullLayout._modules;

    // remove old traces, then redraw everything
    //
    // TODO: scatterlayer is manually excluded from this since it knows how
    // to update instead of fully removing and redrawing every time. The
    // remaining plot traces should also be able to do this. Once implemented,
    // we won't need this - which should sometimes be a big speedup.
    if(plotinfo.plot) {
        plotinfo.plot.selectAll('g:not(.scatterlayer)').selectAll('g.trace').remove();
    }

    // plot all traces for each module at once
    for(var j = 0; j < modules.length; j++) {
        var _module = modules[j];

        // skip over non-cartesian trace modules
        if(_module.basePlotModule.name !== 'cartesian') continue;

        // plot all traces of this type on this subplot at once
        var cdModule = [];
        for(var k = 0; k < cdSubplot.length; k++) {
            var cd = cdSubplot[k],
                trace = cd[0].trace;

            if((trace._module === _module) && (trace.visible === true)) {
                cdModule.push(cd);
            }
        }

        _module.plot(gd, plotinfo, cdModule, transitionOpts, makeOnCompleteCallback);
    }
}

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldModules = oldFullLayout._modules || [],
        newModules = newFullLayout._modules || [];

    var hadScatter, hasScatter, i;

    for(i = 0; i < oldModules.length; i++) {
        if(oldModules[i].name === 'scatter') {
            hadScatter = true;
            break;
        }
    }

    for(i = 0; i < newModules.length; i++) {
        if(newModules[i].name === 'scatter') {
            hasScatter = true;
            break;
        }
    }

    if(hadScatter && !hasScatter) {
        var oldPlots = oldFullLayout._plots,
            ids = Object.keys(oldPlots || {});

        for(i = 0; i < ids.length; i++) {
            var subplotInfo = oldPlots[ids[i]];

            if(subplotInfo.plot) {
                subplotInfo.plot.select('g.scatterlayer')
                    .selectAll('g.trace')
                    .remove();
            }
        }

        oldFullLayout._infolayer.selectAll('g.rangeslider-container')
            .select('g.scatterlayer')
            .selectAll('g.trace')
            .remove();
    }

    var hadCartesian = (oldFullLayout._has && oldFullLayout._has('cartesian'));
    var hasCartesian = (newFullLayout._has && newFullLayout._has('cartesian'));

    if(hadCartesian && !hasCartesian) {
        var subplotLayers = oldFullLayout._cartesianlayer.selectAll('.subplot');
        var axIds = axisIds.listIds({ _fullLayout: oldFullLayout });

        subplotLayers.call(purgeSubplotLayers, oldFullLayout);
        oldFullLayout._defs.selectAll('.axesclip').remove();

        for(i = 0; i < axIds.length; i++) {
            oldFullLayout._infolayer.select('.' + axIds[i] + 'title').remove();
        }
    }
};

exports.drawFramework = function(gd) {
    var fullLayout = gd._fullLayout,
        subplotData = makeSubplotData(gd);

    var subplotLayers = fullLayout._cartesianlayer.selectAll('.subplot')
        .data(subplotData, Lib.identity);

    subplotLayers.enter().append('g')
        .attr('class', function(name) { return 'subplot ' + name; });

    subplotLayers.order();

    subplotLayers.exit()
        .call(purgeSubplotLayers, fullLayout);

    subplotLayers.each(function(name) {
        var plotinfo = fullLayout._plots[name];

        // keep ref to plot group
        plotinfo.plotgroup = d3.select(this);

        // initialize list of overlay subplots
        plotinfo.overlays = [];

        makeSubplotLayer(plotinfo);

        // fill in list of overlay subplots
        if(plotinfo.mainplot) {
            var mainplot = fullLayout._plots[plotinfo.mainplot];
            mainplot.overlays.push(plotinfo);
        }

        // make separate drag layers for each subplot,
        // but append them to paper rather than the plot groups,
        // so they end up on top of the rest
        plotinfo.draglayer = joinLayer(fullLayout._draggers, 'g', name);
    });
};

exports.rangePlot = function(gd, plotinfo, cdSubplot) {
    makeSubplotLayer(plotinfo);
    plotOne(gd, plotinfo, cdSubplot);
    Plots.style(gd);
};

function makeSubplotData(gd) {
    var fullLayout = gd._fullLayout,
        subplots = Object.keys(fullLayout._plots);

    var subplotData = [],
        overlays = [];

    for(var i = 0; i < subplots.length; i++) {
        var subplot = subplots[i],
            plotinfo = fullLayout._plots[subplot];

        var xa = plotinfo.xaxis;
        var ya = plotinfo.yaxis;
        var xa2 = xa._mainAxis;
        var ya2 = ya._mainAxis;

        var mainplot = xa2._id + ya2._id;
        if(mainplot !== subplot && subplots.indexOf(mainplot) !== -1) {
            plotinfo.mainplot = mainplot;
            plotinfo.mainplotinfo = fullLayout._plots[mainplot];
            overlays.push(subplot);
        }
        else {
            subplotData.push(subplot);
        }
    }

    // main subplots before overlays
    subplotData = subplotData.concat(overlays);

    return subplotData;
}

function makeSubplotLayer(plotinfo) {
    var plotgroup = plotinfo.plotgroup;
    var id = plotinfo.id;
    var xLayer = constants.layerValue2layerClass[plotinfo.xaxis.layer];
    var yLayer = constants.layerValue2layerClass[plotinfo.yaxis.layer];

    if(!plotinfo.mainplot) {
        var backLayer = joinLayer(plotgroup, 'g', 'layer-subplot');
        plotinfo.shapelayer = joinLayer(backLayer, 'g', 'shapelayer');
        plotinfo.imagelayer = joinLayer(backLayer, 'g', 'imagelayer');

        plotinfo.gridlayer = joinLayer(plotgroup, 'g', 'gridlayer');
        plotinfo.overgrid = joinLayer(plotgroup, 'g', 'overgrid');

        plotinfo.zerolinelayer = joinLayer(plotgroup, 'g', 'zerolinelayer');
        plotinfo.overzero = joinLayer(plotgroup, 'g', 'overzero');

        joinLayer(plotgroup, 'path', 'xlines-below');
        joinLayer(plotgroup, 'path', 'ylines-below');
        plotinfo.overlinesBelow = joinLayer(plotgroup, 'g', 'overlines-below');

        joinLayer(plotgroup, 'g', 'xaxislayer-below');
        joinLayer(plotgroup, 'g', 'yaxislayer-below');
        plotinfo.overaxesBelow = joinLayer(plotgroup, 'g', 'overaxes-below');

        plotinfo.plot = joinLayer(plotgroup, 'g', 'plot');
        plotinfo.overplot = joinLayer(plotgroup, 'g', 'overplot');

        joinLayer(plotgroup, 'path', 'xlines-above');
        joinLayer(plotgroup, 'path', 'ylines-above');
        plotinfo.overlinesAbove = joinLayer(plotgroup, 'g', 'overlines-above');

        joinLayer(plotgroup, 'g', 'xaxislayer-above');
        joinLayer(plotgroup, 'g', 'yaxislayer-above');
        plotinfo.overaxesAbove = joinLayer(plotgroup, 'g', 'overaxes-above');

        // set refs to correct layers as determined by 'axis.layer'
        plotinfo.xlines = plotgroup.select('.xlines-' + xLayer);
        plotinfo.ylines = plotgroup.select('.ylines-' + yLayer);
        plotinfo.xaxislayer = plotgroup.select('.xaxislayer-' + xLayer);
        plotinfo.yaxislayer = plotgroup.select('.yaxislayer-' + yLayer);
    }
    else {
        var mainplotinfo = plotinfo.mainplotinfo;
        var mainplotgroup = mainplotinfo.plotgroup;
        var xId = id + '-x';
        var yId = id + '-y';

        // now make the components of overlaid subplots
        // overlays don't have backgrounds, and append all
        // their other components to the corresponding
        // extra groups of their main plots.

        plotinfo.gridlayer = joinLayer(mainplotinfo.overgrid, 'g', id);
        plotinfo.zerolinelayer = joinLayer(mainplotinfo.overzero, 'g', id);

        joinLayer(mainplotinfo.overlinesBelow, 'path', xId);
        joinLayer(mainplotinfo.overlinesBelow, 'path', yId);
        joinLayer(mainplotinfo.overaxesBelow, 'g', xId);
        joinLayer(mainplotinfo.overaxesBelow, 'g', yId);

        plotinfo.plot = joinLayer(mainplotinfo.overplot, 'g', id);

        joinLayer(mainplotinfo.overlinesAbove, 'path', xId);
        joinLayer(mainplotinfo.overlinesAbove, 'path', yId);
        joinLayer(mainplotinfo.overaxesAbove, 'g', xId);
        joinLayer(mainplotinfo.overaxesAbove, 'g', yId);

        // set refs to correct layers as determined by 'abovetraces'
        plotinfo.xlines = mainplotgroup.select('.overlines-' + xLayer).select('.' + xId);
        plotinfo.ylines = mainplotgroup.select('.overlines-' + yLayer).select('.' + yId);
        plotinfo.xaxislayer = mainplotgroup.select('.overaxes-' + xLayer).select('.' + xId);
        plotinfo.yaxislayer = mainplotgroup.select('.overaxes-' + yLayer).select('.' + yId);
    }

    // common attributes for all subplots, overlays or not

    for(var i = 0; i < constants.traceLayerClasses.length; i++) {
        joinLayer(plotinfo.plot, 'g', constants.traceLayerClasses[i]);
    }

    plotinfo.xlines
        .style('fill', 'none')
        .classed('crisp', true);

    plotinfo.ylines
        .style('fill', 'none')
        .classed('crisp', true);
}

function purgeSubplotLayers(layers, fullLayout) {
    if(!layers) return;

    var overlayIdsToRemove = {};

    layers.each(function(subplotId) {
        var plotgroup = d3.select(this);
        var clipId = 'clip' + fullLayout._uid + subplotId + 'plot';

        plotgroup.remove();
        fullLayout._draggers.selectAll('g.' + subplotId).remove();
        fullLayout._defs.select('#' + clipId).remove();

        overlayIdsToRemove[subplotId] = true;

        // do not remove individual axis <clipPath>s here
        // as other subplots may need them
    });

    // must remove overlaid subplot trace layers 'manually'

    var subplots = fullLayout._plots;
    var subplotIds = Object.keys(subplots);

    for(var i = 0; i < subplotIds.length; i++) {
        var subplotInfo = subplots[subplotIds[i]];
        var overlays = subplotInfo.overlays || [];

        for(var j = 0; j < overlays.length; j++) {
            var overlayInfo = overlays[j];

            if(overlayIdsToRemove[overlayInfo.id]) {
                overlayInfo.plot.selectAll('.trace').remove();
            }
        }
    }
}

function joinLayer(parent, nodeType, className) {
    var layer = parent.selectAll('.' + className)
        .data([0]);

    layer.enter().append(nodeType)
        .classed(className, true);

    return layer;
}

},{"../../lib":353,"../plots":429,"./attributes":395,"./axis_ids":399,"./constants":401,"./layout_attributes":407,"./transition_axes":417,"d3":62}],407:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../font_attributes');
var colorAttrs = require('../../components/color/attributes');
var dash = require('../../components/drawing/attributes').dash;
var extendFlat = require('../../lib/extend').extendFlat;

var constants = require('./constants');


module.exports = {
    visible: {
        valType: 'boolean',
        
        editType: 'plot',
        
    },
    color: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        
        editType: 'ticks',
        
    },
    title: {
        valType: 'string',
        
        editType: 'ticks',
        
    },
    titlefont: fontAttrs({
        editType: 'ticks',
        
    }),
    type: {
        valType: 'enumerated',
        // '-' means we haven't yet run autotype or couldn't find any data
        // it gets turned into linear in gd._fullLayout but not copied back
        // to gd.data like the others are.
        values: ['-', 'linear', 'log', 'date', 'category'],
        dflt: '-',
        
        editType: 'calc',
        
    },
    autorange: {
        valType: 'enumerated',
        values: [true, false, 'reversed'],
        dflt: true,
        
        editType: 'calc',
        impliedEdits: {'range[0]': undefined, 'range[1]': undefined},
        
    },
    rangemode: {
        valType: 'enumerated',
        values: ['normal', 'tozero', 'nonnegative'],
        dflt: 'normal',
        
        editType: 'calc',
        
    },
    range: {
        valType: 'info_array',
        
        items: [
            {valType: 'any', editType: 'plot', impliedEdits: {'^autorange': false}},
            {valType: 'any', editType: 'plot', impliedEdits: {'^autorange': false}}
        ],
        editType: 'plot',
        impliedEdits: {'autorange': false},
        
    },
    fixedrange: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'calc',
        
    },
    // scaleanchor: not used directly, just put here for reference
    // values are any opposite-letter axis id
    scaleanchor: {
        valType: 'enumerated',
        values: [
            constants.idRegex.x.toString(),
            constants.idRegex.y.toString()
        ],
        
        editType: 'calc',
        
    },
    scaleratio: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'calc',
        
    },
    constrain: {
        valType: 'enumerated',
        values: ['range', 'domain'],
        dflt: 'range',
        
        editType: 'calc',
        
    },
    // constraintoward: not used directly, just put here for reference
    constraintoward: {
        valType: 'enumerated',
        values: ['left', 'center', 'right', 'top', 'middle', 'bottom'],
        
        editType: 'calc',
        
    },
    // ticks
    tickmode: {
        valType: 'enumerated',
        values: ['auto', 'linear', 'array'],
        
        editType: 'ticks',
        impliedEdits: {tick0: undefined, dtick: undefined},
        
    },
    nticks: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        
        editType: 'ticks',
        
    },
    tick0: {
        valType: 'any',
        
        editType: 'ticks',
        impliedEdits: {tickmode: 'linear'},
        
    },
    dtick: {
        valType: 'any',
        
        editType: 'ticks',
        impliedEdits: {tickmode: 'linear'},
        
    },
    tickvals: {
        valType: 'data_array',
        editType: 'ticks',
        
    },
    ticktext: {
        valType: 'data_array',
        editType: 'ticks',
        
    },
    ticks: {
        valType: 'enumerated',
        values: ['outside', 'inside', ''],
        
        editType: 'ticks',
        
    },
    mirror: {
        valType: 'enumerated',
        values: [true, 'ticks', false, 'all', 'allticks'],
        dflt: false,
        
        editType: 'ticks+layoutstyle',
        
    },
    ticklen: {
        valType: 'number',
        min: 0,
        dflt: 5,
        
        editType: 'ticks',
        
    },
    tickwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'ticks',
        
    },
    tickcolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        
        editType: 'ticks',
        
    },
    showticklabels: {
        valType: 'boolean',
        dflt: true,
        
        editType: 'ticks',
        
    },
    showspikes: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'modebar',
        
    },
    spikecolor: {
        valType: 'color',
        dflt: null,
        
        editType: 'none',
        
    },
    spikethickness: {
        valType: 'number',
        dflt: 3,
        
        editType: 'none',
        
    },
    spikedash: extendFlat({}, dash, {dflt: 'dash', editType: 'none'}),
    spikemode: {
        valType: 'flaglist',
        flags: ['toaxis', 'across', 'marker'],
        
        dflt: 'toaxis',
        editType: 'none',
        
    },
    tickfont: fontAttrs({
        editType: 'ticks',
        
    }),
    tickangle: {
        valType: 'angle',
        dflt: 'auto',
        
        editType: 'ticks',
        
    },
    tickprefix: {
        valType: 'string',
        dflt: '',
        
        editType: 'ticks',
        
    },
    showtickprefix: {
        valType: 'enumerated',
        values: ['all', 'first', 'last', 'none'],
        dflt: 'all',
        
        editType: 'ticks',
        
    },
    ticksuffix: {
        valType: 'string',
        dflt: '',
        
        editType: 'ticks',
        
    },
    showticksuffix: {
        valType: 'enumerated',
        values: ['all', 'first', 'last', 'none'],
        dflt: 'all',
        
        editType: 'ticks',
        
    },
    showexponent: {
        valType: 'enumerated',
        values: ['all', 'first', 'last', 'none'],
        dflt: 'all',
        
        editType: 'ticks',
        
    },
    exponentformat: {
        valType: 'enumerated',
        values: ['none', 'e', 'E', 'power', 'SI', 'B'],
        dflt: 'B',
        
        editType: 'ticks',
        
    },
    separatethousands: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'ticks',
        
    },
    tickformat: {
        valType: 'string',
        dflt: '',
        
        editType: 'ticks',
        
    },
    hoverformat: {
        valType: 'string',
        dflt: '',
        
        editType: 'none',
        
    },
    // lines and grids
    showline: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'layoutstyle',
        
    },
    linecolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        
        editType: 'layoutstyle',
        
    },
    linewidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'ticks+layoutstyle',
        
    },
    showgrid: {
        valType: 'boolean',
        
        editType: 'ticks',
        
    },
    gridcolor: {
        valType: 'color',
        dflt: colorAttrs.lightLine,
        
        editType: 'ticks',
        
    },
    gridwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        
        editType: 'ticks',
        
    },
    zeroline: {
        valType: 'boolean',
        
        editType: 'ticks',
        
    },
    zerolinecolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        
        editType: 'ticks',
        
    },
    zerolinewidth: {
        valType: 'number',
        dflt: 1,
        
        editType: 'ticks',
        
    },
    // positioning attributes
    // anchor: not used directly, just put here for reference
    // values are any opposite-letter axis id
    anchor: {
        valType: 'enumerated',
        values: [
            'free',
            constants.idRegex.x.toString(),
            constants.idRegex.y.toString()
        ],
        
        editType: 'plot',
        
    },
    // side: not used directly, as values depend on direction
    // values are top, bottom for x axes, and left, right for y
    side: {
        valType: 'enumerated',
        values: ['top', 'bottom', 'left', 'right'],
        
        editType: 'plot',
        
    },
    // overlaying: not used directly, just put here for reference
    // values are false and any other same-letter axis id that's not
    // itself overlaying anything
    overlaying: {
        valType: 'enumerated',
        values: [
            'free',
            constants.idRegex.x.toString(),
            constants.idRegex.y.toString()
        ],
        
        editType: 'calc',
        
    },
    layer: {
        valType: 'enumerated',
        values: ['above traces', 'below traces'],
        dflt: 'above traces',
        
        editType: 'plot',
        
    },
    domain: {
        valType: 'info_array',
        
        items: [
            {valType: 'number', min: 0, max: 1, editType: 'calc'},
            {valType: 'number', min: 0, max: 1, editType: 'calc'}
        ],
        dflt: [0, 1],
        editType: 'calc',
        
    },
    position: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 0,
        
        editType: 'plot',
        
    },
    categoryorder: {
        valType: 'enumerated',
        values: [
            'trace', 'category ascending', 'category descending', 'array'
            /* , 'value ascending', 'value descending'*/ // value ascending / descending to be implemented later
        ],
        dflt: 'trace',
        
        editType: 'calc',
        
    },
    categoryarray: {
        valType: 'data_array',
        
        editType: 'calc',
        
    },
    editType: 'calc',

    _deprecated: {
        autotick: {
            valType: 'boolean',
            
            editType: 'ticks',
            
        }
    }
};

},{"../../components/color/attributes":232,"../../components/drawing/attributes":256,"../../lib/extend":344,"../font_attributes":420,"./constants":401}],408:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var Color = require('../../components/color');
var basePlotLayoutAttributes = require('../layout_attributes');

var constants = require('./constants');
var layoutAttributes = require('./layout_attributes');
var handleTypeDefaults = require('./type_defaults');
var handleAxisDefaults = require('./axis_defaults');
var handleConstraintDefaults = require('./constraint_defaults');
var handlePositionDefaults = require('./position_defaults');
var axisIds = require('./axis_ids');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    var layoutKeys = Object.keys(layoutIn),
        xaListCartesian = [],
        yaListCartesian = [],
        xaListGl2d = [],
        yaListGl2d = [],
        xaListCheater = [],
        xaListNonCheater = [],
        outerTicks = {},
        noGrids = {},
        i;

    // look for axes in the data
    for(i = 0; i < fullData.length; i++) {
        var trace = fullData[i];
        var listX, listY;

        if(Registry.traceIs(trace, 'cartesian')) {
            listX = xaListCartesian;
            listY = yaListCartesian;
        }
        else if(Registry.traceIs(trace, 'gl2d')) {
            listX = xaListGl2d;
            listY = yaListGl2d;
        }
        else continue;

        var xaName = axisIds.id2name(trace.xaxis),
            yaName = axisIds.id2name(trace.yaxis);

        // Two things trigger axis visibility:
        // 1. is not carpet
        // 2. carpet that's not cheater
        if(!Registry.traceIs(trace, 'carpet') || (trace.type === 'carpet' && !trace._cheater)) {
            if(xaName) Lib.pushUnique(xaListNonCheater, xaName);
        }

        // The above check for definitely-not-cheater is not adequate. This
        // second list tracks which axes *could* be a cheater so that the
        // full condition triggering hiding is:
        //   *could* be a cheater and *is not definitely visible*
        if(trace.type === 'carpet' && trace._cheater) {
            if(xaName) Lib.pushUnique(xaListCheater, xaName);
        }

        // add axes implied by traces
        if(xaName && listX.indexOf(xaName) === -1) listX.push(xaName);
        if(yaName && listY.indexOf(yaName) === -1) listY.push(yaName);

        // check for default formatting tweaks
        if(Registry.traceIs(trace, '2dMap')) {
            outerTicks[xaName] = true;
            outerTicks[yaName] = true;
        }

        if(Registry.traceIs(trace, 'oriented')) {
            var positionAxis = trace.orientation === 'h' ? yaName : xaName;
            noGrids[positionAxis] = true;
        }
    }

    // N.B. Ignore orphan axes (i.e. axes that have no data attached to them)
    // if gl3d or geo is present on graph. This is retain backward compatible.
    //
    // TODO drop this in version 2.0
    var ignoreOrphan = (layoutOut._has('gl3d') || layoutOut._has('geo'));

    if(!ignoreOrphan) {
        for(i = 0; i < layoutKeys.length; i++) {
            var key = layoutKeys[i];

            // orphan layout axes are considered cartesian subplots

            if(xaListGl2d.indexOf(key) === -1 &&
                xaListCartesian.indexOf(key) === -1 &&
                    constants.xAxisMatch.test(key)) {
                xaListCartesian.push(key);
            }
            else if(yaListGl2d.indexOf(key) === -1 &&
                yaListCartesian.indexOf(key) === -1 &&
                    constants.yAxisMatch.test(key)) {
                yaListCartesian.push(key);
            }
        }
    }

    // make sure that plots with orphan cartesian axes
    // are considered 'cartesian'
    if(xaListCartesian.length && yaListCartesian.length) {
        Lib.pushUnique(layoutOut._basePlotModules, Registry.subplotsRegistry.cartesian);
    }

    function axSort(a, b) {
        var aNum = Number(a.substr(5) || 1),
            bNum = Number(b.substr(5) || 1);
        return aNum - bNum;
    }

    var xaList = xaListCartesian.concat(xaListGl2d).sort(axSort),
        yaList = yaListCartesian.concat(yaListGl2d).sort(axSort),
        axesList = xaList.concat(yaList);

    // plot_bgcolor only makes sense if there's a (2D) plot!
    // TODO: bgcolor for each subplot, to inherit from the main one
    var plot_bgcolor = Color.background;
    if(xaList.length && yaList.length) {
        plot_bgcolor = Lib.coerce(layoutIn, layoutOut, basePlotLayoutAttributes, 'plot_bgcolor');
    }

    var bgColor = Color.combine(plot_bgcolor, layoutOut.paper_bgcolor);

    var axName, axLetter, axLayoutIn, axLayoutOut;

    function coerce(attr, dflt) {
        return Lib.coerce(axLayoutIn, axLayoutOut, layoutAttributes, attr, dflt);
    }

    function getCounterAxes(axLetter) {
        var list = {x: yaList, y: xaList}[axLetter];
        return Lib.simpleMap(list, axisIds.name2id);
    }

    var counterAxes = {x: getCounterAxes('x'), y: getCounterAxes('y')};

    function getOverlayableAxes(axLetter, axName) {
        var list = {x: xaList, y: yaList}[axLetter];
        var out = [];

        for(var j = 0; j < list.length; j++) {
            var axName2 = list[j];

            if(axName2 !== axName && !(layoutIn[axName2] || {}).overlaying) {
                out.push(axisIds.name2id(axName2));
            }
        }

        return out;
    }

    // first pass creates the containers, determines types, and handles most of the settings
    for(i = 0; i < axesList.length; i++) {
        axName = axesList[i];

        if(!Lib.isPlainObject(layoutIn[axName])) {
            layoutIn[axName] = {};
        }

        axLayoutIn = layoutIn[axName];
        axLayoutOut = layoutOut[axName] = {};

        handleTypeDefaults(axLayoutIn, axLayoutOut, coerce, fullData, axName);

        axLetter = axName.charAt(0);
        var overlayableAxes = getOverlayableAxes(axLetter, axName);

        var defaultOptions = {
            letter: axLetter,
            font: layoutOut.font,
            outerTicks: outerTicks[axName],
            showGrid: !noGrids[axName],
            data: fullData,
            bgColor: bgColor,
            calendar: layoutOut.calendar,
            cheateronly: axLetter === 'x' && (xaListCheater.indexOf(axName) !== -1 && xaListNonCheater.indexOf(axName) === -1)
        };

        handleAxisDefaults(axLayoutIn, axLayoutOut, coerce, defaultOptions, layoutOut);

        var showSpikes = coerce('showspikes');
        if(showSpikes) {
            coerce('spikecolor');
            coerce('spikethickness');
            coerce('spikedash');
            coerce('spikemode');
        }

        var positioningOptions = {
            letter: axLetter,
            counterAxes: counterAxes[axLetter],
            overlayableAxes: overlayableAxes
        };

        handlePositionDefaults(axLayoutIn, axLayoutOut, coerce, positioningOptions);

        axLayoutOut._input = axLayoutIn;
    }

    // quick second pass for range slider and selector defaults
    var rangeSliderDefaults = Registry.getComponentMethod('rangeslider', 'handleDefaults'),
        rangeSelectorDefaults = Registry.getComponentMethod('rangeselector', 'handleDefaults');

    for(i = 0; i < xaList.length; i++) {
        axName = xaList[i];
        axLayoutIn = layoutIn[axName];
        axLayoutOut = layoutOut[axName];

        rangeSliderDefaults(layoutIn, layoutOut, axName);

        if(axLayoutOut.type === 'date') {
            rangeSelectorDefaults(
                axLayoutIn,
                axLayoutOut,
                layoutOut,
                yaList,
                axLayoutOut.calendar
            );
        }

        coerce('fixedrange');
    }

    for(i = 0; i < yaList.length; i++) {
        axName = yaList[i];
        axLayoutIn = layoutIn[axName];
        axLayoutOut = layoutOut[axName];

        var anchoredAxis = layoutOut[axisIds.id2name(axLayoutOut.anchor)];

        var fixedRangeDflt = (
            anchoredAxis &&
            anchoredAxis.rangeslider &&
            anchoredAxis.rangeslider.visible
        );

        coerce('fixedrange', fixedRangeDflt);
    }

    // Finally, handle scale constraints. We need to do this after all axes have
    // coerced both `type` (so we link only axes of the same type) and
    // `fixedrange` (so we can avoid linking from OR TO a fixed axis).

    // sets of axes linked by `scaleanchor` along with the scaleratios compounded
    // together, populated in handleConstraintDefaults
    layoutOut._axisConstraintGroups = [];
    var allAxisIds = counterAxes.x.concat(counterAxes.y);

    for(i = 0; i < axesList.length; i++) {
        axName = axesList[i];
        axLetter = axName.charAt(0);

        axLayoutIn = layoutIn[axName];
        axLayoutOut = layoutOut[axName];

        handleConstraintDefaults(axLayoutIn, axLayoutOut, coerce, allAxisIds, layoutOut);
    }
};

},{"../../components/color":233,"../../lib":353,"../../registry":436,"../layout_attributes":427,"./axis_defaults":398,"./axis_ids":399,"./constants":401,"./constraint_defaults":402,"./layout_attributes":407,"./position_defaults":410,"./type_defaults":418}],409:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

// flattenUniqueSort :: String -> Function -> [[String]] -> [String]
function flattenUniqueSort(axisLetter, sortFunction, data) {

    // Bisection based insertion sort of distinct values for logarithmic time complexity.
    // Can't use a hashmap, which is O(1), because ES5 maps coerce keys to strings. If it ever becomes a bottleneck,
    // code can be separated: a hashmap (JS object) based version if all values encountered are strings; and
    // downgrading to this O(log(n)) array on the first encounter of a non-string value.

    var categoryArray = [];

    var traceLines = data.map(function(d) {return d[axisLetter];});

    var i, j, tracePoints, category, insertionIndex;

    var bisector = d3.bisector(sortFunction).left;

    for(i = 0; i < traceLines.length; i++) {

        tracePoints = traceLines[i];

        for(j = 0; j < tracePoints.length; j++) {

            category = tracePoints[j];

            // skip loop: ignore null and undefined categories
            if(category === null || category === undefined) continue;

            insertionIndex = bisector(categoryArray, category);

            // skip loop on already encountered values
            if(insertionIndex < categoryArray.length && categoryArray[insertionIndex] === category) continue;

            // insert value
            categoryArray.splice(insertionIndex, 0, category);
        }
    }

    return categoryArray;
}


/**
 * This pure function returns the ordered categories for specified axisLetter, categoryorder, categoryarray and data.
 *
 * If categoryorder is 'array', the result is a fresh copy of categoryarray, or if unspecified, an empty array.
 *
 * If categoryorder is 'category ascending' or 'category descending', the result is an array of ascending or descending
 * order of the unique categories encountered in the data for specified axisLetter.
 *
 * See cartesian/layout_attributes.js for the definition of categoryorder and categoryarray
 *
 */

// orderedCategories :: String -> String -> [String] -> [[String]] -> [String]
module.exports = function orderedCategories(axisLetter, categoryorder, categoryarray, data) {

    switch(categoryorder) {
        case 'array': return Array.isArray(categoryarray) ? categoryarray.slice() : [];
        case 'category ascending': return flattenUniqueSort(axisLetter, d3.ascending, data);
        case 'category descending': return flattenUniqueSort(axisLetter, d3.descending, data);
        case 'trace': return [];
        default: return [];
    }
};

},{"d3":62}],410:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');


module.exports = function handlePositionDefaults(containerIn, containerOut, coerce, options) {
    var counterAxes = options.counterAxes || [],
        overlayableAxes = options.overlayableAxes || [],
        letter = options.letter;

    var anchor = Lib.coerce(containerIn, containerOut, {
        anchor: {
            valType: 'enumerated',
            values: ['free'].concat(counterAxes),
            dflt: isNumeric(containerIn.position) ? 'free' :
                (counterAxes[0] || 'free')
        }
    }, 'anchor');

    if(anchor === 'free') coerce('position');

    Lib.coerce(containerIn, containerOut, {
        side: {
            valType: 'enumerated',
            values: letter === 'x' ? ['bottom', 'top'] : ['left', 'right'],
            dflt: letter === 'x' ? 'bottom' : 'left'
        }
    }, 'side');

    var overlaying = false;
    if(overlayableAxes.length) {
        overlaying = Lib.coerce(containerIn, containerOut, {
            overlaying: {
                valType: 'enumerated',
                values: [false].concat(overlayableAxes),
                dflt: false
            }
        }, 'overlaying');
    }

    if(!overlaying) {
        // TODO: right now I'm copying this domain over to overlaying axes
        // in ax.setscale()... but this means we still need (imperfect) logic
        // in the axes popover to hide domain for the overlaying axis.
        // perhaps I should make a private version _domain that all axes get???
        var domain = coerce('domain');
        if(domain[0] > domain[1] - 0.01) containerOut.domain = [0, 1];
        Lib.noneOrAll(containerIn.domain, containerOut.domain, [0, 1]);
    }

    coerce('layer');

    return containerOut;
};

},{"../../lib":353,"fast-isnumeric":68}],411:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var FROM_BL = require('../../constants/alignment').FROM_BL;

module.exports = function scaleZoom(ax, factor, centerFraction) {
    if(centerFraction === undefined) {
        centerFraction = FROM_BL[ax.constraintoward || 'center'];
    }

    var rangeLinear = [ax.r2l(ax.range[0]), ax.r2l(ax.range[1])];
    var center = rangeLinear[0] + (rangeLinear[1] - rangeLinear[0]) * centerFraction;

    ax.range = ax._input.range = [
        ax.l2r(center + (rangeLinear[0] - center) * factor),
        ax.l2r(center + (rangeLinear[1] - center) * factor)
    ];
};

},{"../../constants/alignment":330}],412:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var polygon = require('../../lib/polygon');
var throttle = require('../../lib/throttle');
var color = require('../../components/color');
var appendArrayPointValue = require('../../components/fx/helpers').appendArrayPointValue;

var axes = require('./axes');
var constants = require('./constants');

var filteredPolygon = polygon.filter;
var polygonTester = polygon.tester;
var MINSELECT = constants.MINSELECT;

function getAxId(ax) { return ax._id; }

module.exports = function prepSelect(e, startX, startY, dragOptions, mode) {
    var zoomLayer = dragOptions.gd._fullLayout._zoomlayer,
        dragBBox = dragOptions.element.getBoundingClientRect(),
        plotinfo = dragOptions.plotinfo,
        xs = plotinfo.xaxis._offset,
        ys = plotinfo.yaxis._offset,
        x0 = startX - dragBBox.left,
        y0 = startY - dragBBox.top,
        x1 = x0,
        y1 = y0,
        path0 = 'M' + x0 + ',' + y0,
        pw = dragOptions.xaxes[0]._length,
        ph = dragOptions.yaxes[0]._length,
        xAxisIds = dragOptions.xaxes.map(getAxId),
        yAxisIds = dragOptions.yaxes.map(getAxId),
        allAxes = dragOptions.xaxes.concat(dragOptions.yaxes),
        pts;

    if(mode === 'lasso') {
        pts = filteredPolygon([[x0, y0]], constants.BENDPX);
    }

    var outlines = zoomLayer.selectAll('path.select-outline').data([1, 2]);

    outlines.enter()
        .append('path')
        .attr('class', function(d) { return 'select-outline select-outline-' + d; })
        .attr('transform', 'translate(' + xs + ', ' + ys + ')')
        .attr('d', path0 + 'Z');

    var corners = zoomLayer.append('path')
        .attr('class', 'zoombox-corners')
        .style({
            fill: color.background,
            stroke: color.defaultLine,
            'stroke-width': 1
        })
        .attr('transform', 'translate(' + xs + ', ' + ys + ')')
        .attr('d', 'M0,0Z');


    // find the traces to search for selection points
    var searchTraces = [];
    var gd = dragOptions.gd;
    var throttleID = gd._fullLayout._uid + constants.SELECTID;
    var selection = [];
    var i, cd, trace, searchInfo, eventData;

    for(i = 0; i < gd.calcdata.length; i++) {
        cd = gd.calcdata[i];
        trace = cd[0].trace;
        if(trace.visible !== true || !trace._module || !trace._module.selectPoints) continue;

        if(dragOptions.subplot) {
            if(
                trace.subplot === dragOptions.subplot ||
                trace.geo === dragOptions.subplot
            ) {
                searchTraces.push({
                    selectPoints: trace._module.selectPoints,
                    cd: cd,
                    xaxis: dragOptions.xaxes[0],
                    yaxis: dragOptions.yaxes[0]
                });
            }
        } else {
            if(xAxisIds.indexOf(trace.xaxis) === -1) continue;
            if(yAxisIds.indexOf(trace.yaxis) === -1) continue;

            searchTraces.push({
                selectPoints: trace._module.selectPoints,
                cd: cd,
                xaxis: axes.getFromId(gd, trace.xaxis),
                yaxis: axes.getFromId(gd, trace.yaxis)
            });
        }
    }

    function axValue(ax) {
        var index = (ax._id.charAt(0) === 'y') ? 1 : 0;
        return function(v) { return ax.p2d(v[index]); };
    }

    function ascending(a, b) { return a - b; }

    // allow subplots to override fillRangeItems routine
    var fillRangeItems;

    if(plotinfo.fillRangeItems) {
        fillRangeItems = plotinfo.fillRangeItems;
    } else {
        if(mode === 'select') {
            fillRangeItems = function(eventData, poly) {
                var ranges = eventData.range = {};

                for(i = 0; i < allAxes.length; i++) {
                    var ax = allAxes[i];
                    var axLetter = ax._id.charAt(0);

                    ranges[ax._id] = [
                        ax.p2d(poly[axLetter + 'min']),
                        ax.p2d(poly[axLetter + 'max'])
                    ].sort(ascending);
                }
            };
        } else {
            fillRangeItems = function(eventData, poly, pts) {
                var dataPts = eventData.lassoPoints = {};

                for(i = 0; i < allAxes.length; i++) {
                    var ax = allAxes[i];
                    dataPts[ax._id] = pts.filtered.map(axValue(ax));
                }
            };
        }
    }

    dragOptions.moveFn = function(dx0, dy0) {
        var poly;

        x1 = Math.max(0, Math.min(pw, dx0 + x0));
        y1 = Math.max(0, Math.min(ph, dy0 + y0));

        var dx = Math.abs(x1 - x0),
            dy = Math.abs(y1 - y0);

        if(mode === 'select') {
            if(dy < Math.min(dx * 0.6, MINSELECT)) {
                // horizontal motion: make a vertical box
                poly = polygonTester([[x0, 0], [x0, ph], [x1, ph], [x1, 0]]);
                // extras to guide users in keeping a straight selection
                corners.attr('d', 'M' + poly.xmin + ',' + (y0 - MINSELECT) +
                    'h-4v' + (2 * MINSELECT) + 'h4Z' +
                    'M' + (poly.xmax - 1) + ',' + (y0 - MINSELECT) +
                    'h4v' + (2 * MINSELECT) + 'h-4Z');

            }
            else if(dx < Math.min(dy * 0.6, MINSELECT)) {
                // vertical motion: make a horizontal box
                poly = polygonTester([[0, y0], [0, y1], [pw, y1], [pw, y0]]);
                corners.attr('d', 'M' + (x0 - MINSELECT) + ',' + poly.ymin +
                    'v-4h' + (2 * MINSELECT) + 'v4Z' +
                    'M' + (x0 - MINSELECT) + ',' + (poly.ymax - 1) +
                    'v4h' + (2 * MINSELECT) + 'v-4Z');
            }
            else {
                // diagonal motion
                poly = polygonTester([[x0, y0], [x0, y1], [x1, y1], [x1, y0]]);
                corners.attr('d', 'M0,0Z');
            }
            outlines.attr('d', 'M' + poly.xmin + ',' + poly.ymin +
                'H' + (poly.xmax - 1) + 'V' + (poly.ymax - 1) +
                'H' + poly.xmin + 'Z');
        }
        else if(mode === 'lasso') {
            pts.addPt([x1, y1]);
            poly = polygonTester(pts.filtered);
            outlines.attr('d', 'M' + pts.filtered.join('L') + 'Z');
        }

        throttle.throttle(
            throttleID,
            constants.SELECTDELAY,
            function() {
                selection = [];
                for(i = 0; i < searchTraces.length; i++) {
                    searchInfo = searchTraces[i];
                    var thisSelection = fillSelectionItem(
                        searchInfo.selectPoints(searchInfo, poly), searchInfo
                    );
                    if(selection.length) {
                        for(var j = 0; j < thisSelection.length; j++) {
                            selection.push(thisSelection[j]);
                        }
                    }
                    else selection = thisSelection;
                }

                eventData = {points: selection};
                fillRangeItems(eventData, poly, pts);
                dragOptions.gd.emit('plotly_selecting', eventData);
            }
        );
    };

    dragOptions.doneFn = function(dragged, numclicks) {
        corners.remove();
        throttle.done(throttleID).then(function() {
            throttle.clear(throttleID);

            if(!dragged && numclicks === 2) {
                // clear selection on doubleclick
                outlines.remove();
                for(i = 0; i < searchTraces.length; i++) {
                    searchInfo = searchTraces[i];
                    searchInfo.selectPoints(searchInfo, false);
                }

                gd.emit('plotly_deselect', null);
            }
            else {
                dragOptions.gd.emit('plotly_selected', eventData);
            }
        });
    };
};

function fillSelectionItem(selection, searchInfo) {
    if(Array.isArray(selection)) {
        var trace = searchInfo.cd[0].trace;

        for(var i = 0; i < selection.length; i++) {
            var sel = selection[i];

            sel.curveNumber = trace.index;
            sel.data = trace._input;
            sel.fullData = trace;
            appendArrayPointValue(sel, trace, sel.pointNumber);
        }
    }

    return selection;
}

},{"../../components/color":233,"../../components/fx/helpers":271,"../../lib/polygon":364,"../../lib/throttle":376,"./axes":396,"./constants":401}],413:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var cleanNumber = Lib.cleanNumber;
var ms2DateTime = Lib.ms2DateTime;
var dateTime2ms = Lib.dateTime2ms;
var ensureNumber = Lib.ensureNumber;

var numConstants = require('../../constants/numerical');
var FP_SAFE = numConstants.FP_SAFE;
var BADNUM = numConstants.BADNUM;

var constants = require('./constants');
var axisIds = require('./axis_ids');

function fromLog(v) {
    return Math.pow(10, v);
}

/**
 * Define the conversion functions for an axis data is used in 5 ways:
 *
 *  d: data, in whatever form it's provided
 *  c: calcdata: turned into numbers, but not linearized
 *  l: linearized - same as c except for log axes (and other nonlinear
 *      mappings later?) this is used when we need to know if it's
 *      *possible* to show some data on this axis, without caring about
 *      the current range
 *  p: pixel value - mapped to the screen with current size and zoom
 *  r: ranges, tick0, and annotation positions match one of the above
 *     but are handled differently for different types:
 *     - linear and date: data format (d)
 *     - category: calcdata format (c), and will stay that way because
 *       the data format has no continuous mapping
 *     - log: linearized (l) format
 *       TODO: in v2.0 we plan to change it to data format. At that point
 *       shapes will work the same way as ranges, tick0, and annotations
 *       so they can use this conversion too.
 *
 * Creates/updates these conversion functions, and a few more utilities
 * like cleanRange, and makeCalcdata
 *
 * also clears the autorange bounds ._min and ._max
 * and the autotick constraints ._minDtick, ._forceTick0
 */
module.exports = function setConvert(ax, fullLayout) {
    fullLayout = fullLayout || {};

    var axLetter = (ax._id || 'x').charAt(0);

    // clipMult: how many axis lengths past the edge do we render?
    // for panning, 1-2 would suffice, but for zooming more is nice.
    // also, clipping can affect the direction of lines off the edge...
    var clipMult = 10;

    function toLog(v, clip) {
        if(v > 0) return Math.log(v) / Math.LN10;

        else if(v <= 0 && clip && ax.range && ax.range.length === 2) {
            // clip NaN (ie past negative infinity) to clipMult axis
            // length past the negative edge
            var r0 = ax.range[0],
                r1 = ax.range[1];
            return 0.5 * (r0 + r1 - 3 * clipMult * Math.abs(r0 - r1));
        }

        else return BADNUM;
    }

    /*
     * wrapped dateTime2ms that:
     * - accepts ms numbers for backward compatibility
     * - inserts a dummy arg so calendar is the 3rd arg (see notes below).
     * - defaults to ax.calendar
     */
    function dt2ms(v, _, calendar) {
        // NOTE: Changed this behavior: previously we took any numeric value
        // to be a ms, even if it was a string that could be a bare year.
        // Now we convert it as a date if at all possible, and only try
        // as (local) ms if that fails.
        var ms = dateTime2ms(v, calendar || ax.calendar);
        if(ms === BADNUM) {
            if(isNumeric(v)) ms = dateTime2ms(new Date(+v));
            else return BADNUM;
        }
        return ms;
    }

    // wrapped ms2DateTime to insert default ax.calendar
    function ms2dt(v, r, calendar) {
        return ms2DateTime(v, r, calendar || ax.calendar);
    }

    function getCategoryName(v) {
        return ax._categories[Math.round(v)];
    }

    /*
     * setCategoryIndex: return the index of category v,
     * inserting it in the list if it's not already there
     *
     * this will enter the categories in the order it
     * encounters them, ie all the categories from the
     * first data set, then all the ones from the second
     * that aren't in the first etc.
     *
     * it is assumed that this function is being invoked in the
     * already sorted category order; otherwise there would be
     * a disconnect between the array and the index returned
     */
    function setCategoryIndex(v) {
        if(v !== null && v !== undefined) {
            if(ax._categoriesMap === undefined) {
                ax._categoriesMap = {};
            }

            if(ax._categoriesMap[v] !== undefined) {
                return ax._categoriesMap[v];
            } else {
                ax._categories.push(v);

                var curLength = ax._categories.length - 1;
                ax._categoriesMap[v] = curLength;

                return curLength;
            }
        }
        return BADNUM;
    }

    function getCategoryIndex(v) {
        // d2l/d2c variant that that won't add categories but will also
        // allow numbers to be mapped to the linearized axis positions
        if(ax._categoriesMap) {
            var index = ax._categoriesMap[v];
            if(index !== undefined) return index;
        }

        if(isNumeric(v)) return +v;
    }

    function l2p(v) {
        if(!isNumeric(v)) return BADNUM;

        // include 2 fractional digits on pixel, for PDF zooming etc
        return d3.round(ax._b + ax._m * v, 2);
    }

    function p2l(px) { return (px - ax._b) / ax._m; }

    // conversions among c/l/p are fairly simple - do them together for all axis types
    ax.c2l = (ax.type === 'log') ? toLog : ensureNumber;
    ax.l2c = (ax.type === 'log') ? fromLog : ensureNumber;

    ax.l2p = l2p;
    ax.p2l = p2l;

    ax.c2p = (ax.type === 'log') ? function(v, clip) { return l2p(toLog(v, clip)); } : l2p;
    ax.p2c = (ax.type === 'log') ? function(px) { return fromLog(p2l(px)); } : p2l;

    /*
     * now type-specific conversions for **ALL** other combinations
     * they're all written out, instead of being combinations of each other, for
     * both clarity and speed.
     */
    if(['linear', '-'].indexOf(ax.type) !== -1) {
        // all are data vals, but d and r need cleaning
        ax.d2r = ax.r2d = ax.d2c = ax.r2c = ax.d2l = ax.r2l = cleanNumber;
        ax.c2d = ax.c2r = ax.l2d = ax.l2r = ensureNumber;

        ax.d2p = ax.r2p = function(v) { return ax.l2p(cleanNumber(v)); };
        ax.p2d = ax.p2r = p2l;

        ax.cleanPos = ensureNumber;
    }
    else if(ax.type === 'log') {
        // d and c are data vals, r and l are logged (but d and r need cleaning)
        ax.d2r = ax.d2l = function(v, clip) { return toLog(cleanNumber(v), clip); };
        ax.r2d = ax.r2c = function(v) { return fromLog(cleanNumber(v)); };

        ax.d2c = ax.r2l = cleanNumber;
        ax.c2d = ax.l2r = ensureNumber;

        ax.c2r = toLog;
        ax.l2d = fromLog;

        ax.d2p = function(v, clip) { return ax.l2p(ax.d2r(v, clip)); };
        ax.p2d = function(px) { return fromLog(p2l(px)); };

        ax.r2p = function(v) { return ax.l2p(cleanNumber(v)); };
        ax.p2r = p2l;

        ax.cleanPos = ensureNumber;
    }
    else if(ax.type === 'date') {
        // r and d are date strings, l and c are ms

        /*
         * Any of these functions with r and d on either side, calendar is the
         * **3rd** argument. log has reserved the second argument.
         *
         * Unless you need the special behavior of the second arg (ms2DateTime
         * uses this to limit precision, toLog uses true to clip negatives
         * to offscreen low rather than undefined), it's safe to pass 0.
         */
        ax.d2r = ax.r2d = Lib.identity;

        ax.d2c = ax.r2c = ax.d2l = ax.r2l = dt2ms;
        ax.c2d = ax.c2r = ax.l2d = ax.l2r = ms2dt;

        ax.d2p = ax.r2p = function(v, _, calendar) { return ax.l2p(dt2ms(v, 0, calendar)); };
        ax.p2d = ax.p2r = function(px, r, calendar) { return ms2dt(p2l(px), r, calendar); };

        ax.cleanPos = function(v) { return Lib.cleanDate(v, BADNUM, ax.calendar); };
    }
    else if(ax.type === 'category') {
        // d is categories (string)
        // c and l are indices (numbers)
        // r is categories or numbers

        ax.d2c = ax.d2l = setCategoryIndex;
        ax.r2d = ax.c2d = ax.l2d = getCategoryName;

        ax.d2r = ax.d2l_noadd = getCategoryIndex;

        ax.r2c = function(v) {
            var index = getCategoryIndex(v);
            return index !== undefined ? index : ax.fraction2r(0.5);
        };

        ax.l2r = ax.c2r = ensureNumber;
        ax.r2l = getCategoryIndex;

        ax.d2p = function(v) { return ax.l2p(ax.r2c(v)); };
        ax.p2d = function(px) { return getCategoryName(p2l(px)); };
        ax.r2p = ax.d2p;
        ax.p2r = p2l;

        ax.cleanPos = function(v) {
            if(typeof v === 'string' && v !== '') return v;
            return ensureNumber(v);
        };
    }

    // find the range value at the specified (linear) fraction of the axis
    ax.fraction2r = function(v) {
        var rl0 = ax.r2l(ax.range[0]),
            rl1 = ax.r2l(ax.range[1]);
        return ax.l2r(rl0 + v * (rl1 - rl0));
    };

    // find the fraction of the range at the specified range value
    ax.r2fraction = function(v) {
        var rl0 = ax.r2l(ax.range[0]),
            rl1 = ax.r2l(ax.range[1]);
        return (ax.r2l(v) - rl0) / (rl1 - rl0);
    };

    /*
     * cleanRange: make sure range is a couplet of valid & distinct values
     * keep numbers away from the limits of floating point numbers,
     * and dates away from the ends of our date system (+/- 9999 years)
     *
     * optional param rangeAttr: operate on a different attribute, like
     * ax._r, rather than ax.range
     */
    ax.cleanRange = function(rangeAttr) {
        if(!rangeAttr) rangeAttr = 'range';
        var range = Lib.nestedProperty(ax, rangeAttr).get(),
            i, dflt;

        if(ax.type === 'date') dflt = Lib.dfltRange(ax.calendar);
        else if(axLetter === 'y') dflt = constants.DFLTRANGEY;
        else dflt = constants.DFLTRANGEX;

        // make sure we don't later mutate the defaults
        dflt = dflt.slice();

        if(!range || range.length !== 2) {
            Lib.nestedProperty(ax, rangeAttr).set(dflt);
            return;
        }

        if(ax.type === 'date') {
            // check if milliseconds or js date objects are provided for range
            // and convert to date strings
            range[0] = Lib.cleanDate(range[0], BADNUM, ax.calendar);
            range[1] = Lib.cleanDate(range[1], BADNUM, ax.calendar);
        }

        for(i = 0; i < 2; i++) {
            if(ax.type === 'date') {
                if(!Lib.isDateTime(range[i], ax.calendar)) {
                    ax[rangeAttr] = dflt;
                    break;
                }

                if(ax.r2l(range[0]) === ax.r2l(range[1])) {
                    // split by +/- 1 second
                    var linCenter = Lib.constrain(ax.r2l(range[0]),
                        Lib.MIN_MS + 1000, Lib.MAX_MS - 1000);
                    range[0] = ax.l2r(linCenter - 1000);
                    range[1] = ax.l2r(linCenter + 1000);
                    break;
                }
            }
            else {
                if(!isNumeric(range[i])) {
                    if(isNumeric(range[1 - i])) {
                        range[i] = range[1 - i] * (i ? 10 : 0.1);
                    }
                    else {
                        ax[rangeAttr] = dflt;
                        break;
                    }
                }

                if(range[i] < -FP_SAFE) range[i] = -FP_SAFE;
                else if(range[i] > FP_SAFE) range[i] = FP_SAFE;

                if(range[0] === range[1]) {
                    // somewhat arbitrary: split by 1 or 1ppm, whichever is bigger
                    var inc = Math.max(1, Math.abs(range[0] * 1e-6));
                    range[0] -= inc;
                    range[1] += inc;
                }
            }
        }
    };

    // set scaling to pixels
    ax.setScale = function(usePrivateRange) {
        var gs = fullLayout._size;

        // TODO cleaner way to handle this case
        if(!ax._categories) ax._categories = [];
        // Add a map to optimize the performance of category collection
        if(!ax._categoriesMap) ax._categoriesMap = {};

        // make sure we have a domain (pull it in from the axis
        // this one is overlaying if necessary)
        if(ax.overlaying) {
            var ax2 = axisIds.getFromId({ _fullLayout: fullLayout }, ax.overlaying);
            ax.domain = ax2.domain;
        }

        // While transitions are occuring, occurring, we get a double-transform
        // issue if we transform the drawn layer *and* use the new axis range to
        // draw the data. This allows us to construct setConvert using the pre-
        // interaction values of the range:
        var rangeAttr = (usePrivateRange && ax._r) ? '_r' : 'range',
            calendar = ax.calendar;
        ax.cleanRange(rangeAttr);

        var rl0 = ax.r2l(ax[rangeAttr][0], calendar),
            rl1 = ax.r2l(ax[rangeAttr][1], calendar);

        if(axLetter === 'y') {
            ax._offset = gs.t + (1 - ax.domain[1]) * gs.h;
            ax._length = gs.h * (ax.domain[1] - ax.domain[0]);
            ax._m = ax._length / (rl0 - rl1);
            ax._b = -ax._m * rl1;
        }
        else {
            ax._offset = gs.l + ax.domain[0] * gs.w;
            ax._length = gs.w * (ax.domain[1] - ax.domain[0]);
            ax._m = ax._length / (rl1 - rl0);
            ax._b = -ax._m * rl0;
        }

        if(!isFinite(ax._m) || !isFinite(ax._b)) {
            Lib.notifier(
                'Something went wrong with axis scaling',
                'long');
            fullLayout._replotting = false;
            throw new Error('axis scaling');
        }
    };

    // makeCalcdata: takes an x or y array and converts it
    // to a position on the axis object "ax"
    // inputs:
    //      trace - a data object from gd.data
    //      axLetter - a string, either 'x' or 'y', for which item
    //          to convert (TODO: is this now always the same as
    //          the first letter of ax._id?)
    // in case the expected data isn't there, make a list of
    // integers based on the opposite data
    ax.makeCalcdata = function(trace, axLetter) {
        var arrayIn, arrayOut, i;

        var cal = ax.type === 'date' && trace[axLetter + 'calendar'];

        if(axLetter in trace) {
            arrayIn = trace[axLetter];
            arrayOut = new Array(arrayIn.length);

            for(i = 0; i < arrayIn.length; i++) {
                arrayOut[i] = ax.d2c(arrayIn[i], 0, cal);
            }
        }
        else {
            var v0 = ((axLetter + '0') in trace) ?
                    ax.d2c(trace[axLetter + '0'], 0, cal) : 0,
                dv = (trace['d' + axLetter]) ?
                    Number(trace['d' + axLetter]) : 1;

            // the opposing data, for size if we have x and dx etc
            arrayIn = trace[{x: 'y', y: 'x'}[axLetter]];
            arrayOut = new Array(arrayIn.length);

            for(i = 0; i < arrayIn.length; i++) arrayOut[i] = v0 + i * dv;
        }
        return arrayOut;
    };

    ax.isValidRange = function(range) {
        return (
            Array.isArray(range) &&
            range.length === 2 &&
            isNumeric(ax.r2l(range[0])) &&
            isNumeric(ax.r2l(range[1]))
        );
    };

    if(axLetter === 'x') {
        ax.isPtWithinRange = function(d) {
            var x = d.x;
            return x >= ax.range[0] && x <= ax.range[1];
        };
    } else {
        ax.isPtWithinRange = function(d) {
            var y = d.y;
            return y >= ax.range[0] && y <= ax.range[1];
        };
    }

    // for autoranging: arrays of objects:
    //      {val: axis value, pad: pixel padding}
    // on the low and high sides
    ax._min = [];
    ax._max = [];

    // copy ref to fullLayout.separators so that
    // methods in Axes can use it w/o having to pass fullLayout
    ax._separators = fullLayout.separators;

    // and for bar charts and box plots: reset forced minimum tick spacing
    delete ax._minDtick;
    delete ax._forceTick0;
};

},{"../../constants/numerical":334,"../../lib":353,"./axis_ids":399,"./constants":401,"d3":62,"fast-isnumeric":68}],414:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


/**
 * options: inherits font, outerTicks, noHover from axes.handleAxisDefaults
 */
module.exports = function handleTickLabelDefaults(containerIn, containerOut, coerce, axType, options) {
    var showAttrDflt = getShowAttrDflt(containerIn);

    var tickPrefix = coerce('tickprefix');
    if(tickPrefix) coerce('showtickprefix', showAttrDflt);

    var tickSuffix = coerce('ticksuffix');
    if(tickSuffix) coerce('showticksuffix', showAttrDflt);

    var showTickLabels = coerce('showticklabels');
    if(showTickLabels) {
        var font = options.font || {};
        // as with titlefont.color, inherit axis.color only if one was
        // explicitly provided
        var dfltFontColor = (containerOut.color === containerIn.color) ?
            containerOut.color : font.color;
        Lib.coerceFont(coerce, 'tickfont', {
            family: font.family,
            size: font.size,
            color: dfltFontColor
        });
        coerce('tickangle');

        if(axType !== 'category') {
            var tickFormat = coerce('tickformat');
            if(!tickFormat && axType !== 'date') {
                coerce('showexponent', showAttrDflt);
                coerce('exponentformat');
                coerce('separatethousands');
            }
        }
    }

    if(axType !== 'category' && !options.noHover) coerce('hoverformat');
};

/*
 * Attributes 'showexponent', 'showtickprefix' and 'showticksuffix'
 * share values.
 *
 * If only 1 attribute is set,
 * the remaining attributes inherit that value.
 *
 * If 2 attributes are set to the same value,
 * the remaining attribute inherits that value.
 *
 * If 2 attributes are set to different values,
 * the remaining is set to its dflt value.
 *
 */
function getShowAttrDflt(containerIn) {
    var showAttrsAll = ['showexponent',
            'showtickprefix',
            'showticksuffix'],
        showAttrs = showAttrsAll.filter(function(a) {
            return containerIn[a] !== undefined;
        }),
        sameVal = function(a) {
            return containerIn[a] === containerIn[showAttrs[0]];
        };

    if(showAttrs.every(sameVal) || showAttrs.length === 1) {
        return containerIn[showAttrs[0]];
    }
}

},{"../../lib":353}],415:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var layoutAttributes = require('./layout_attributes');


/**
 * options: inherits outerTicks from axes.handleAxisDefaults
 */
module.exports = function handleTickDefaults(containerIn, containerOut, coerce, options) {
    var tickLen = Lib.coerce2(containerIn, containerOut, layoutAttributes, 'ticklen'),
        tickWidth = Lib.coerce2(containerIn, containerOut, layoutAttributes, 'tickwidth'),
        tickColor = Lib.coerce2(containerIn, containerOut, layoutAttributes, 'tickcolor', containerOut.color),
        showTicks = coerce('ticks', (options.outerTicks || tickLen || tickWidth || tickColor) ? 'outside' : '');

    if(!showTicks) {
        delete containerOut.ticklen;
        delete containerOut.tickwidth;
        delete containerOut.tickcolor;
    }
};

},{"../../lib":353,"./layout_attributes":407}],416:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var Lib = require('../../lib');
var ONEDAY = require('../../constants/numerical').ONEDAY;


module.exports = function handleTickValueDefaults(containerIn, containerOut, coerce, axType) {
    var tickmodeDefault = 'auto';

    if(containerIn.tickmode === 'array' &&
            (axType === 'log' || axType === 'date')) {
        containerIn.tickmode = 'auto';
    }

    if(Array.isArray(containerIn.tickvals)) tickmodeDefault = 'array';
    else if(containerIn.dtick) {
        tickmodeDefault = 'linear';
    }
    var tickmode = coerce('tickmode', tickmodeDefault);

    if(tickmode === 'auto') coerce('nticks');
    else if(tickmode === 'linear') {
        // dtick is usually a positive number, but there are some
        // special strings available for log or date axes
        // default is 1 day for dates, otherwise 1
        var dtickDflt = (axType === 'date') ? ONEDAY : 1;
        var dtick = coerce('dtick', dtickDflt);
        if(isNumeric(dtick)) {
            containerOut.dtick = (dtick > 0) ? Number(dtick) : dtickDflt;
        }
        else if(typeof dtick !== 'string') {
            containerOut.dtick = dtickDflt;
        }
        else {
            // date and log special cases are all one character plus a number
            var prefix = dtick.charAt(0),
                dtickNum = dtick.substr(1);

            dtickNum = isNumeric(dtickNum) ? Number(dtickNum) : 0;
            if((dtickNum <= 0) || !(
                    // "M<n>" gives ticks every (integer) n months
                    (axType === 'date' && prefix === 'M' && dtickNum === Math.round(dtickNum)) ||
                    // "L<f>" gives ticks linearly spaced in data (not in position) every (float) f
                    (axType === 'log' && prefix === 'L') ||
                    // "D1" gives powers of 10 with all small digits between, "D2" gives only 2 and 5
                    (axType === 'log' && prefix === 'D' && (dtickNum === 1 || dtickNum === 2))
                )) {
                containerOut.dtick = dtickDflt;
            }
        }

        // tick0 can have different valType for different axis types, so
        // validate that now. Also for dates, change milliseconds to date strings
        var tick0Dflt = (axType === 'date') ? Lib.dateTick0(containerOut.calendar) : 0;
        var tick0 = coerce('tick0', tick0Dflt);
        if(axType === 'date') {
            containerOut.tick0 = Lib.cleanDate(tick0, tick0Dflt);
        }
        // Aside from date axes, dtick must be numeric; D1 and D2 modes ignore tick0 entirely
        else if(isNumeric(tick0) && dtick !== 'D1' && dtick !== 'D2') {
            containerOut.tick0 = Number(tick0);
        }
        else {
            containerOut.tick0 = tick0Dflt;
        }
    }
    else {
        var tickvals = coerce('tickvals');
        if(tickvals === undefined) containerOut.tickmode = 'auto';
        else coerce('ticktext');
    }
};

},{"../../constants/numerical":334,"../../lib":353,"fast-isnumeric":68}],417:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Registry = require('../../registry');
var Drawing = require('../../components/drawing');
var Axes = require('./axes');
var axisRegex = require('./constants').attrRegex;

module.exports = function transitionAxes(gd, newLayout, transitionOpts, makeOnCompleteCallback) {
    var fullLayout = gd._fullLayout;
    var axes = [];

    function computeUpdates(layout) {
        var ai, attrList, match, axis, update;
        var updates = {};

        for(ai in layout) {
            attrList = ai.split('.');
            match = attrList[0].match(axisRegex);
            if(match) {
                var axisLetter = ai.charAt(0);
                var axisName = attrList[0];
                axis = fullLayout[axisName];
                update = {};

                if(Array.isArray(layout[ai])) {
                    update.to = layout[ai].slice(0);
                } else {
                    if(Array.isArray(layout[ai].range)) {
                        update.to = layout[ai].range.slice(0);
                    }
                }
                if(!update.to) continue;

                update.axisName = axisName;
                update.length = axis._length;

                axes.push(axisLetter);

                updates[axisLetter] = update;
            }
        }

        return updates;
    }

    function computeAffectedSubplots(fullLayout, updatedAxisIds, updates) {
        var plotName;
        var plotinfos = fullLayout._plots;
        var affectedSubplots = [];
        var toX, toY;

        for(plotName in plotinfos) {
            var plotinfo = plotinfos[plotName];

            if(affectedSubplots.indexOf(plotinfo) !== -1) continue;

            var x = plotinfo.xaxis._id;
            var y = plotinfo.yaxis._id;
            var fromX = plotinfo.xaxis.range;
            var fromY = plotinfo.yaxis.range;

            // Store the initial range at the beginning of this transition:
            plotinfo.xaxis._r = plotinfo.xaxis.range.slice();
            plotinfo.yaxis._r = plotinfo.yaxis.range.slice();

            if(updates[x]) {
                toX = updates[x].to;
            } else {
                toX = fromX;
            }
            if(updates[y]) {
                toY = updates[y].to;
            } else {
                toY = fromY;
            }

            if(fromX[0] === toX[0] && fromX[1] === toX[1] && fromY[0] === toY[0] && fromY[1] === toY[1]) continue;

            if(updatedAxisIds.indexOf(x) !== -1 || updatedAxisIds.indexOf(y) !== -1) {
                affectedSubplots.push(plotinfo);
            }
        }

        return affectedSubplots;
    }

    var updates = computeUpdates(newLayout);
    var updatedAxisIds = Object.keys(updates);
    var affectedSubplots = computeAffectedSubplots(fullLayout, updatedAxisIds, updates);

    function updateLayoutObjs() {
        function redrawObjs(objArray, method, shortCircuit) {
            for(var i = 0; i < objArray.length; i++) {
                method(gd, i);

                // once is enough for images (which doesn't use the `i` arg anyway)
                if(shortCircuit) return;
            }
        }

        redrawObjs(fullLayout.annotations || [], Registry.getComponentMethod('annotations', 'drawOne'));
        redrawObjs(fullLayout.shapes || [], Registry.getComponentMethod('shapes', 'drawOne'));
        redrawObjs(fullLayout.images || [], Registry.getComponentMethod('images', 'draw'), true);
    }

    if(!affectedSubplots.length) {
        updateLayoutObjs();
        return false;
    }

    function ticksAndAnnotations(xa, ya) {
        var activeAxIds = [],
            i;

        activeAxIds = [xa._id, ya._id];

        for(i = 0; i < activeAxIds.length; i++) {
            Axes.doTicks(gd, activeAxIds[i], true);
        }

        function redrawObjs(objArray, method, shortCircuit) {
            for(i = 0; i < objArray.length; i++) {
                var obji = objArray[i];

                if((activeAxIds.indexOf(obji.xref) !== -1) ||
                    (activeAxIds.indexOf(obji.yref) !== -1)) {
                    method(gd, i);
                }

                // once is enough for images (which doesn't use the `i` arg anyway)
                if(shortCircuit) return;
            }
        }

        redrawObjs(fullLayout.annotations || [], Registry.getComponentMethod('annotations', 'drawOne'));
        redrawObjs(fullLayout.shapes || [], Registry.getComponentMethod('shapes', 'drawOne'));
        redrawObjs(fullLayout.images || [], Registry.getComponentMethod('images', 'draw'), true);
    }

    function unsetSubplotTransform(subplot) {
        var xa2 = subplot.xaxis;
        var ya2 = subplot.yaxis;

        fullLayout._defs.select('#' + subplot.clipId + '> rect')
            .call(Drawing.setTranslate, 0, 0)
            .call(Drawing.setScale, 1, 1);

        subplot.plot
            .call(Drawing.setTranslate, xa2._offset, ya2._offset)
            .call(Drawing.setScale, 1, 1);

        var scatterPoints = subplot.plot.select('.scatterlayer').selectAll('.points');

        // This is specifically directed at scatter traces, applying an inverse
        // scale to individual points to counteract the scale of the trace
        // as a whole:
        scatterPoints.selectAll('.point')
            .call(Drawing.setPointGroupScale, 1, 1)
            .call(Drawing.hideOutsideRangePoints, subplot);

        scatterPoints.selectAll('.textpoint')
            .call(Drawing.setTextPointsScale, 1, 1)
            .call(Drawing.hideOutsideRangePoints, subplot);
    }

    function updateSubplot(subplot, progress) {
        var axis, r0, r1;
        var xUpdate = updates[subplot.xaxis._id];
        var yUpdate = updates[subplot.yaxis._id];

        var viewBox = [];

        if(xUpdate) {
            axis = gd._fullLayout[xUpdate.axisName];
            r0 = axis._r;
            r1 = xUpdate.to;
            viewBox[0] = (r0[0] * (1 - progress) + progress * r1[0] - r0[0]) / (r0[1] - r0[0]) * subplot.xaxis._length;
            var dx1 = r0[1] - r0[0];
            var dx2 = r1[1] - r1[0];

            axis.range[0] = r0[0] * (1 - progress) + progress * r1[0];
            axis.range[1] = r0[1] * (1 - progress) + progress * r1[1];

            viewBox[2] = subplot.xaxis._length * ((1 - progress) + progress * dx2 / dx1);
        } else {
            viewBox[0] = 0;
            viewBox[2] = subplot.xaxis._length;
        }

        if(yUpdate) {
            axis = gd._fullLayout[yUpdate.axisName];
            r0 = axis._r;
            r1 = yUpdate.to;
            viewBox[1] = (r0[1] * (1 - progress) + progress * r1[1] - r0[1]) / (r0[0] - r0[1]) * subplot.yaxis._length;
            var dy1 = r0[1] - r0[0];
            var dy2 = r1[1] - r1[0];

            axis.range[0] = r0[0] * (1 - progress) + progress * r1[0];
            axis.range[1] = r0[1] * (1 - progress) + progress * r1[1];

            viewBox[3] = subplot.yaxis._length * ((1 - progress) + progress * dy2 / dy1);
        } else {
            viewBox[1] = 0;
            viewBox[3] = subplot.yaxis._length;
        }

        ticksAndAnnotations(subplot.xaxis, subplot.yaxis);

        var xa2 = subplot.xaxis;
        var ya2 = subplot.yaxis;

        var editX = !!xUpdate;
        var editY = !!yUpdate;

        var xScaleFactor = editX ? xa2._length / viewBox[2] : 1,
            yScaleFactor = editY ? ya2._length / viewBox[3] : 1;

        var clipDx = editX ? viewBox[0] : 0,
            clipDy = editY ? viewBox[1] : 0;

        var fracDx = editX ? (viewBox[0] / viewBox[2] * xa2._length) : 0,
            fracDy = editY ? (viewBox[1] / viewBox[3] * ya2._length) : 0;

        var plotDx = xa2._offset - fracDx,
            plotDy = ya2._offset - fracDy;

        fullLayout._defs.select('#' + subplot.clipId + '> rect')
            .call(Drawing.setTranslate, clipDx, clipDy)
            .call(Drawing.setScale, 1 / xScaleFactor, 1 / yScaleFactor);

        subplot.plot
            .call(Drawing.setTranslate, plotDx, plotDy)
            .call(Drawing.setScale, xScaleFactor, yScaleFactor)

            // This is specifically directed at scatter traces, applying an inverse
            // scale to individual points to counteract the scale of the trace
            // as a whole:
            .selectAll('.points').selectAll('.point')
                .call(Drawing.setPointGroupScale, 1 / xScaleFactor, 1 / yScaleFactor);

        subplot.plot.selectAll('.points').selectAll('.textpoint')
            .call(Drawing.setTextPointsScale, 1 / xScaleFactor, 1 / yScaleFactor);
    }

    var onComplete;
    if(makeOnCompleteCallback) {
        // This module makes the choice whether or not it notifies Plotly.transition
        // about completion:
        onComplete = makeOnCompleteCallback();
    }

    function transitionComplete() {
        var aobj = {};
        for(var i = 0; i < updatedAxisIds.length; i++) {
            var axi = gd._fullLayout[updates[updatedAxisIds[i]].axisName];
            var to = updates[updatedAxisIds[i]].to;
            aobj[axi._name + '.range[0]'] = to[0];
            aobj[axi._name + '.range[1]'] = to[1];

            axi.range = to.slice();
        }

        // Signal that this transition has completed:
        onComplete && onComplete();

        return Plotly.relayout(gd, aobj).then(function() {
            for(var i = 0; i < affectedSubplots.length; i++) {
                unsetSubplotTransform(affectedSubplots[i]);
            }
        });
    }

    function transitionInterrupt() {
        var aobj = {};
        for(var i = 0; i < updatedAxisIds.length; i++) {
            var axi = gd._fullLayout[updatedAxisIds[i] + 'axis'];
            aobj[axi._name + '.range[0]'] = axi.range[0];
            aobj[axi._name + '.range[1]'] = axi.range[1];

            axi.range = axi._r.slice();
        }

        return Plotly.relayout(gd, aobj).then(function() {
            for(var i = 0; i < affectedSubplots.length; i++) {
                unsetSubplotTransform(affectedSubplots[i]);
            }
        });
    }

    var t1, t2, raf;
    var easeFn = d3.ease(transitionOpts.easing);

    gd._transitionData._interruptCallbacks.push(function() {
        window.cancelAnimationFrame(raf);
        raf = null;
        return transitionInterrupt();
    });

    function doFrame() {
        t2 = Date.now();

        var tInterp = Math.min(1, (t2 - t1) / transitionOpts.duration);
        var progress = easeFn(tInterp);

        for(var i = 0; i < affectedSubplots.length; i++) {
            updateSubplot(affectedSubplots[i], progress);
        }

        if(t2 - t1 > transitionOpts.duration) {
            transitionComplete();
            raf = window.cancelAnimationFrame(doFrame);
        } else {
            raf = window.requestAnimationFrame(doFrame);
        }
    }

    t1 = Date.now();
    raf = window.requestAnimationFrame(doFrame);

    return Promise.resolve();
};

},{"../../components/drawing":257,"../../plotly":391,"../../registry":436,"./axes":396,"./constants":401,"d3":62}],418:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var autoType = require('./axis_autotype');
var name2id = require('./axis_ids').name2id;

/*
 *  data: the plot data to use in choosing auto type
 *  name: axis object name (ie 'xaxis') if one should be stored
 */
module.exports = function handleTypeDefaults(containerIn, containerOut, coerce, data, name) {
    // set up some private properties
    if(name) {
        containerOut._name = name;
        containerOut._id = name2id(name);
    }

    var axType = coerce('type');
    if(axType === '-') {
        setAutoType(containerOut, data);

        if(containerOut.type === '-') {
            containerOut.type = 'linear';
        }
        else {
            // copy autoType back to input axis
            // note that if this object didn't exist
            // in the input layout, we have to put it in
            // this happens in the main supplyDefaults function
            containerIn.type = containerOut.type;
        }
    }
};

function setAutoType(ax, data) {
    // new logic: let people specify any type they want,
    // only autotype if type is '-'
    if(ax.type !== '-') return;

    var id = ax._id,
        axLetter = id.charAt(0);

    // support 3d
    if(id.indexOf('scene') !== -1) id = axLetter;

    var d0 = getFirstNonEmptyTrace(data, id, axLetter);
    if(!d0) return;

    // first check for histograms, as the count direction
    // should always default to a linear axis
    if(d0.type === 'histogram' &&
            axLetter === {v: 'y', h: 'x'}[d0.orientation || 'v']) {
        ax.type = 'linear';
        return;
    }

    var calAttr = axLetter + 'calendar',
        calendar = d0[calAttr];

    // check all boxes on this x axis to see
    // if they're dates, numbers, or categories
    if(isBoxWithoutPositionCoords(d0, axLetter)) {
        var posLetter = getBoxPosLetter(d0),
            boxPositions = [],
            trace;

        for(var i = 0; i < data.length; i++) {
            trace = data[i];
            if(!Registry.traceIs(trace, 'box') ||
               (trace[axLetter + 'axis'] || axLetter) !== id) continue;

            if(trace[posLetter] !== undefined) boxPositions.push(trace[posLetter][0]);
            else if(trace.name !== undefined) boxPositions.push(trace.name);
            else boxPositions.push('text');

            if(trace[calAttr] !== calendar) calendar = undefined;
        }

        ax.type = autoType(boxPositions, calendar);
    }
    else {
        ax.type = autoType(d0[axLetter] || [d0[axLetter + '0']], calendar);
    }
}

function getFirstNonEmptyTrace(data, id, axLetter) {
    for(var i = 0; i < data.length; i++) {
        var trace = data[i];

        if((trace[axLetter + 'axis'] || axLetter) === id) {
            if(isBoxWithoutPositionCoords(trace, axLetter)) {
                return trace;
            }
            else if((trace[axLetter] || []).length || trace[axLetter + '0']) {
                return trace;
            }
        }
    }
}

function getBoxPosLetter(trace) {
    return {v: 'x', h: 'y'}[trace.orientation || 'v'];
}

function isBoxWithoutPositionCoords(trace, axLetter) {
    var posLetter = getBoxPosLetter(trace),
        isBox = Registry.traceIs(trace, 'box'),
        isCandlestick = Registry.traceIs(trace._fullInput || {}, 'candlestick');

    return (
        isBox &&
        !isCandlestick &&
        axLetter === posLetter &&
        trace[posLetter] === undefined &&
        trace[posLetter + '0'] === undefined
    );
}

},{"../../registry":436,"./axis_autotype":397,"./axis_ids":399}],419:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../plotly');
var Lib = require('../lib');

/*
 * Create or update an observer. This function is designed to be
 * idempotent so that it can be called over and over as the component
 * updates, and will attach and detach listeners as needed.
 *
 * @param {optional object} container
 *      An object on which the observer is stored. This is the mechanism
 *      by which it is idempotent. If it already exists, another won't be
 *      added. Each time it's called, the value lookup table is updated.
 * @param {array} commandList
 *      An array of commands, following either `buttons` of `updatemenus`
 *      or `steps` of `sliders`.
 * @param {function} onchange
 *      A listener called when the value is changed. Receives data object
 *      with information about the new state.
 */
exports.manageCommandObserver = function(gd, container, commandList, onchange) {
    var ret = {};
    var enabled = true;

    if(container && container._commandObserver) {
        ret = container._commandObserver;
    }

    if(!ret.cache) {
        ret.cache = {};
    }

    // Either create or just recompute this:
    ret.lookupTable = {};

    var binding = exports.hasSimpleAPICommandBindings(gd, commandList, ret.lookupTable);

    if(container && container._commandObserver) {
        if(!binding) {
            // If container exists and there are no longer any bindings,
            // remove existing:
            if(container._commandObserver.remove) {
                container._commandObserver.remove();
                container._commandObserver = null;
                return ret;
            }
        } else {
            // If container exists and there *are* bindings, then the lookup
            // table should have been updated and check is already attached,
            // so there's nothing to be done:
            return ret;


        }
    }

    // Determine whether there's anything to do for this binding:

    if(binding) {
        // Build the cache:
        bindingValueHasChanged(gd, binding, ret.cache);

        ret.check = function check() {
            if(!enabled) return;

            var update = bindingValueHasChanged(gd, binding, ret.cache);

            if(update.changed && onchange) {
                // Disable checks for the duration of this command in order to avoid
                // infinite loops:
                if(ret.lookupTable[update.value] !== undefined) {
                    ret.disable();
                    Promise.resolve(onchange({
                        value: update.value,
                        type: binding.type,
                        prop: binding.prop,
                        traces: binding.traces,
                        index: ret.lookupTable[update.value]
                    })).then(ret.enable, ret.enable);
                }
            }

            return update.changed;
        };

        var checkEvents = [
            'plotly_relayout',
            'plotly_redraw',
            'plotly_restyle',
            'plotly_update',
            'plotly_animatingframe',
            'plotly_afterplot'
        ];

        for(var i = 0; i < checkEvents.length; i++) {
            gd._internalOn(checkEvents[i], ret.check);
        }

        ret.remove = function() {
            for(var i = 0; i < checkEvents.length; i++) {
                gd._removeInternalListener(checkEvents[i], ret.check);
            }
        };
    } else {
        // TODO: It'd be really neat to actually give a *reason* for this, but at least a warning
        // is a start
        Lib.warn('Unable to automatically bind plot updates to API command');

        ret.lookupTable = {};
        ret.remove = function() {};
    }

    ret.disable = function disable() {
        enabled = false;
    };

    ret.enable = function enable() {
        enabled = true;
    };

    if(container) {
        container._commandObserver = ret;
    }

    return ret;
};

/*
 * This function checks to see if an array of objects containing
 * method and args properties is compatible with automatic two-way
 * binding. The criteria right now are that
 *
 *   1. multiple traces may be affected
 *   2. only one property may be affected
 *   3. the same property must be affected by all commands
 */
exports.hasSimpleAPICommandBindings = function(gd, commandList, bindingsByValue) {
    var i;
    var n = commandList.length;

    var refBinding;

    for(i = 0; i < n; i++) {
        var binding;
        var command = commandList[i];
        var method = command.method;
        var args = command.args;

        if(!Array.isArray(args)) args = [];

        // If any command has no method, refuse to bind:
        if(!method) {
            return false;
        }
        var bindings = exports.computeAPICommandBindings(gd, method, args);

        // Right now, handle one and *only* one property being set:
        if(bindings.length !== 1) {
            return false;
        }

        if(!refBinding) {
            refBinding = bindings[0];
            if(Array.isArray(refBinding.traces)) {
                refBinding.traces.sort();
            }
        } else {
            binding = bindings[0];
            if(binding.type !== refBinding.type) {
                return false;
            }
            if(binding.prop !== refBinding.prop) {
                return false;
            }
            if(Array.isArray(refBinding.traces)) {
                if(Array.isArray(binding.traces)) {
                    binding.traces.sort();
                    for(var j = 0; j < refBinding.traces.length; j++) {
                        if(refBinding.traces[j] !== binding.traces[j]) {
                            return false;
                        }
                    }
                } else {
                    return false;
                }
            } else {
                if(binding.prop !== refBinding.prop) {
                    return false;
                }
            }
        }

        binding = bindings[0];
        var value = binding.value;
        if(Array.isArray(value)) {
            if(value.length === 1) {
                value = value[0];
            } else {
                return false;
            }
        }
        if(bindingsByValue) {
            bindingsByValue[value] = i;
        }
    }

    return refBinding;
};

function bindingValueHasChanged(gd, binding, cache) {
    var container, value, obj;
    var changed = false;

    if(binding.type === 'data') {
        // If it's data, we need to get a trace. Based on the limited scope
        // of what we cover, we can just take the first trace from the list,
        // or otherwise just the first trace:
        container = gd._fullData[binding.traces !== null ? binding.traces[0] : 0];
    } else if(binding.type === 'layout') {
        container = gd._fullLayout;
    } else {
        return false;
    }

    value = Lib.nestedProperty(container, binding.prop).get();

    obj = cache[binding.type] = cache[binding.type] || {};

    if(obj.hasOwnProperty(binding.prop)) {
        if(obj[binding.prop] !== value) {
            changed = true;
        }
    }

    obj[binding.prop] = value;

    return {
        changed: changed,
        value: value
    };
}

/*
 * Execute an API command. There's really not much to this; it just provides
 * a common hook so that implementations don't need to be synchronized across
 * multiple components with the ability to invoke API commands.
 *
 * @param {string} method
 *      The name of the plotly command to execute. Must be one of 'animate',
 *      'restyle', 'relayout', 'update'.
 * @param {array} args
 *      A list of arguments passed to the API command
 */
exports.executeAPICommand = function(gd, method, args) {
    if(method === 'skip') return Promise.resolve();

    var apiMethod = Plotly[method];

    var allArgs = [gd];

    if(!Array.isArray(args)) args = [];

    for(var i = 0; i < args.length; i++) {
        allArgs.push(args[i]);
    }

    return apiMethod.apply(null, allArgs).catch(function(err) {
        Lib.warn('API call to Plotly.' + method + ' rejected.', err);
        return Promise.reject(err);
    });
};

exports.computeAPICommandBindings = function(gd, method, args) {
    var bindings;

    if(!Array.isArray(args)) args = [];

    switch(method) {
        case 'restyle':
            bindings = computeDataBindings(gd, args);
            break;
        case 'relayout':
            bindings = computeLayoutBindings(gd, args);
            break;
        case 'update':
            bindings = computeDataBindings(gd, [args[0], args[2]])
                .concat(computeLayoutBindings(gd, [args[1]]));
            break;
        case 'animate':
            bindings = computeAnimateBindings(gd, args);
            break;
        default:
            // This is the case where intelligent logic about what affects
            // this command is not implemented. It causes no ill effects.
            // For example, addFrames simply won't bind to a control component.
            bindings = [];
    }
    return bindings;
};

function computeAnimateBindings(gd, args) {
    // We'll assume that the only relevant modification an animation
    // makes that's meaningfully tracked is the frame:
    if(Array.isArray(args[0]) && args[0].length === 1 && ['string', 'number'].indexOf(typeof args[0][0]) !== -1) {
        return [{type: 'layout', prop: '_currentFrame', value: args[0][0].toString()}];
    } else {
        return [];
    }
}

function computeLayoutBindings(gd, args) {
    var bindings = [];

    var astr = args[0];
    var aobj = {};
    if(typeof astr === 'string') {
        aobj[astr] = args[1];
    } else if(Lib.isPlainObject(astr)) {
        aobj = astr;
    } else {
        return bindings;
    }

    crawl(aobj, function(path, attrName, attr) {
        bindings.push({type: 'layout', prop: path, value: attr});
    }, '', 0);

    return bindings;
}

function computeDataBindings(gd, args) {
    var traces, astr, val, aobj;
    var bindings = [];

    // Logic copied from Plotly.restyle:
    astr = args[0];
    val = args[1];
    traces = args[2];
    aobj = {};
    if(typeof astr === 'string') {
        aobj[astr] = val;
    } else if(Lib.isPlainObject(astr)) {
        // the 3-arg form
        aobj = astr;

        if(traces === undefined) {
            traces = val;
        }
    } else {
        return bindings;
    }

    if(traces === undefined) {
        // Explicitly assign this to null instead of undefined:
        traces = null;
    }

    crawl(aobj, function(path, attrName, attr) {
        var thisTraces;
        if(Array.isArray(attr)) {
            var nAttr = Math.min(attr.length, gd.data.length);
            if(traces) {
                nAttr = Math.min(nAttr, traces.length);
            }
            thisTraces = [];
            for(var j = 0; j < nAttr; j++) {
                thisTraces[j] = traces ? traces[j] : j;
            }
        } else {
            thisTraces = traces ? traces.slice(0) : null;
        }

        // Convert [7] to just 7 when traces is null:
        if(thisTraces === null) {
            if(Array.isArray(attr)) {
                attr = attr[0];
            }
        } else if(Array.isArray(thisTraces)) {
            if(!Array.isArray(attr)) {
                var tmp = attr;
                attr = [];
                for(var i = 0; i < thisTraces.length; i++) {
                    attr[i] = tmp;
                }
            }
            attr.length = Math.min(thisTraces.length, attr.length);
        }

        bindings.push({
            type: 'data',
            prop: path,
            traces: thisTraces,
            value: attr
        });
    }, '', 0);

    return bindings;
}

function crawl(attrs, callback, path, depth) {
    Object.keys(attrs).forEach(function(attrName) {
        var attr = attrs[attrName];

        if(attrName[0] === '_') return;

        var thisPath = path + (depth > 0 ? '.' : '') + attrName;

        if(Lib.isPlainObject(attr)) {
            crawl(attr, callback, thisPath, depth + 1);
        } else {
            // Only execute the callback on leaf nodes:
            callback(thisPath, attrName, attr);
        }
    });
}

},{"../lib":353,"../plotly":391}],420:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/*
 * make a font attribute group
 *
 * @param {object} opts
 *   @param {string}
 *     opts.description: where & how this font is used
 *   @param {optional bool} arrayOk:
 *     should each part (family, size, color) be arrayOk? default false.
 *   @param {string} editType:
 *     the editType for all pieces of this font
 *   @param {optional string} colorEditType:
 *     a separate editType just for color
 *
 * @return {object} attributes object containing {family, size, color} as specified
 */
module.exports = function(opts) {
    var editType = opts.editType;
    var colorEditType = opts.colorEditType;
    if(colorEditType === undefined) colorEditType = editType;
    var attrs = {
        family: {
            valType: 'string',
            
            noBlank: true,
            strict: true,
            editType: editType,
            
        },
        size: {
            valType: 'number',
            
            min: 1,
            editType: editType
        },
        color: {
            valType: 'color',
            
            editType: colorEditType
        },
        editType: editType,
        // blank strings so compress_attributes can remove
        // TODO - that's uber hacky... better solution?
        
    };

    if(opts.arrayOk) {
        attrs.family.arrayOk = true;
        attrs.size.arrayOk = true;
        attrs.color.arrayOk = true;
    }

    return attrs;
};

},{}],421:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    _isLinkedToArray: 'frames_entry',

    group: {
        valType: 'string',
        
        
    },
    name: {
        valType: 'string',
        
        
    },
    traces: {
        valType: 'any',
        
        
    },
    baseframe: {
        valType: 'string',
        
        
    },
    data: {
        valType: 'any',
        
        
    },
    layout: {
        valType: 'any',
        
        
    }
};

},{}],422:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var mouseChange = require('mouse-change');
var mouseWheel = require('mouse-wheel');
var mouseOffset = require('mouse-event-offset');
var cartesianConstants = require('../cartesian/constants');

module.exports = createCamera;

function Camera2D(element, plot) {
    this.element = element;
    this.plot = plot;
    this.mouseListener = null;
    this.wheelListener = null;
    this.lastInputTime = Date.now();
    this.lastPos = [0, 0];
    this.boxEnabled = false;
    this.boxInited = false;
    this.boxStart = [0, 0];
    this.boxEnd = [0, 0];
    this.dragStart = [0, 0];
}


function createCamera(scene) {
    var element = scene.mouseContainer,
        plot = scene.glplot,
        result = new Camera2D(element, plot);

    function unSetAutoRange() {
        scene.xaxis.autorange = false;
        scene.yaxis.autorange = false;
    }

    function getSubplotConstraint() {
        // note: this assumes we only have one x and one y axis on this subplot
        // when this constraint is lifted this block won't make sense
        var constraints = scene.graphDiv._fullLayout._axisConstraintGroups;
        var xaId = scene.xaxis._id;
        var yaId = scene.yaxis._id;
        for(var i = 0; i < constraints.length; i++) {
            if(constraints[i][xaId] !== -1) {
                if(constraints[i][yaId] !== -1) return true;
                break;
            }
        }
        return false;
    }

    result.mouseListener = mouseChange(element, handleInteraction);

    // enable simple touch interactions
    element.addEventListener('touchstart', function(ev) {
        var xy = mouseOffset(ev.changedTouches[0], element);
        handleInteraction(0, xy[0], xy[1]);
        handleInteraction(1, xy[0], xy[1]);
    });
    element.addEventListener('touchmove', function(ev) {
        ev.preventDefault();
        var xy = mouseOffset(ev.changedTouches[0], element);
        handleInteraction(1, xy[0], xy[1]);
    });
    element.addEventListener('touchend', function() {
        handleInteraction(0, result.lastPos[0], result.lastPos[1]);
    });

    function handleInteraction(buttons, x, y) {
        var dataBox = scene.calcDataBox(),
            viewBox = plot.viewBox;

        var lastX = result.lastPos[0],
            lastY = result.lastPos[1];

        var MINDRAG = cartesianConstants.MINDRAG * plot.pixelRatio;
        var MINZOOM = cartesianConstants.MINZOOM * plot.pixelRatio;

        var dx, dy;

        x *= plot.pixelRatio;
        y *= plot.pixelRatio;

        // mouseChange gives y about top; convert to about bottom
        y = (viewBox[3] - viewBox[1]) - y;

        function updateRange(i0, start, end) {
            var range0 = Math.min(start, end),
                range1 = Math.max(start, end);

            if(range0 !== range1) {
                dataBox[i0] = range0;
                dataBox[i0 + 2] = range1;
                result.dataBox = dataBox;
                scene.setRanges(dataBox);
            }
            else {
                scene.selectBox.selectBox = [0, 0, 1, 1];
                scene.glplot.setDirty();
            }
        }

        switch(scene.fullLayout.dragmode) {
            case 'zoom':
                if(buttons) {
                    var dataX = x /
                            (viewBox[2] - viewBox[0]) * (dataBox[2] - dataBox[0]) +
                        dataBox[0];
                    var dataY = y /
                            (viewBox[3] - viewBox[1]) * (dataBox[3] - dataBox[1]) +
                        dataBox[1];

                    if(!result.boxInited) {
                        result.boxStart[0] = dataX;
                        result.boxStart[1] = dataY;
                        result.dragStart[0] = x;
                        result.dragStart[1] = y;
                    }

                    result.boxEnd[0] = dataX;
                    result.boxEnd[1] = dataY;

                    // we need to mark the box as initialized right away
                    // so that we can tell the start and end points apart
                    result.boxInited = true;

                    // but don't actually enable the box until the cursor moves
                    if(!result.boxEnabled && (
                        result.boxStart[0] !== result.boxEnd[0] ||
                        result.boxStart[1] !== result.boxEnd[1])
                    ) {
                        result.boxEnabled = true;
                    }

                    // constrain aspect ratio if the axes require it
                    var smallDx = Math.abs(result.dragStart[0] - x) < MINZOOM;
                    var smallDy = Math.abs(result.dragStart[1] - y) < MINZOOM;
                    if(getSubplotConstraint() && !(smallDx && smallDy)) {
                        dx = result.boxEnd[0] - result.boxStart[0];
                        dy = result.boxEnd[1] - result.boxStart[1];
                        var dydx = (dataBox[3] - dataBox[1]) / (dataBox[2] - dataBox[0]);

                        if(Math.abs(dx * dydx) > Math.abs(dy)) {
                            result.boxEnd[1] = result.boxStart[1] +
                                Math.abs(dx) * dydx * (dy >= 0 ? 1 : -1);

                            // gl-select-box clips to the plot area bounds,
                            // which breaks the axis constraint, so don't allow
                            // this box to go out of bounds
                            if(result.boxEnd[1] < dataBox[1]) {
                                result.boxEnd[1] = dataBox[1];
                                result.boxEnd[0] = result.boxStart[0] +
                                    (dataBox[1] - result.boxStart[1]) / Math.abs(dydx);
                            }
                            else if(result.boxEnd[1] > dataBox[3]) {
                                result.boxEnd[1] = dataBox[3];
                                result.boxEnd[0] = result.boxStart[0] +
                                    (dataBox[3] - result.boxStart[1]) / Math.abs(dydx);
                            }
                        }
                        else {
                            result.boxEnd[0] = result.boxStart[0] +
                                Math.abs(dy) / dydx * (dx >= 0 ? 1 : -1);

                            if(result.boxEnd[0] < dataBox[0]) {
                                result.boxEnd[0] = dataBox[0];
                                result.boxEnd[1] = result.boxStart[1] +
                                    (dataBox[0] - result.boxStart[0]) * Math.abs(dydx);
                            }
                            else if(result.boxEnd[0] > dataBox[2]) {
                                result.boxEnd[0] = dataBox[2];
                                result.boxEnd[1] = result.boxStart[1] +
                                    (dataBox[2] - result.boxStart[0]) * Math.abs(dydx);
                            }
                        }
                    }
                    // otherwise clamp small changes to the origin so we get 1D zoom
                    else {
                        if(smallDx) result.boxEnd[0] = result.boxStart[0];
                        if(smallDy) result.boxEnd[1] = result.boxStart[1];
                    }
                }
                else if(result.boxEnabled) {
                    dx = result.boxStart[0] !== result.boxEnd[0];
                    dy = result.boxStart[1] !== result.boxEnd[1];
                    if(dx || dy) {
                        if(dx) {
                            updateRange(0, result.boxStart[0], result.boxEnd[0]);
                            scene.xaxis.autorange = false;
                        }
                        if(dy) {
                            updateRange(1, result.boxStart[1], result.boxEnd[1]);
                            scene.yaxis.autorange = false;
                        }
                        scene.relayoutCallback();
                    }
                    else {
                        scene.glplot.setDirty();
                    }
                    result.boxEnabled = false;
                    result.boxInited = false;
                }
                // if box was inited but button released then - reset the box
                else if(result.boxInited) {
                    result.boxInited = false;
                }
                break;

            case 'pan':
                result.boxEnabled = false;
                result.boxInited = false;

                if(buttons) {
                    if(!result.panning) {
                        result.dragStart[0] = x;
                        result.dragStart[1] = y;
                    }

                    if(Math.abs(result.dragStart[0] - x) < MINDRAG) x = result.dragStart[0];
                    if(Math.abs(result.dragStart[1] - y) < MINDRAG) y = result.dragStart[1];

                    dx = (lastX - x) * (dataBox[2] - dataBox[0]) /
                        (plot.viewBox[2] - plot.viewBox[0]);
                    dy = (lastY - y) * (dataBox[3] - dataBox[1]) /
                        (plot.viewBox[3] - plot.viewBox[1]);

                    dataBox[0] += dx;
                    dataBox[2] += dx;
                    dataBox[1] += dy;
                    dataBox[3] += dy;

                    scene.setRanges(dataBox);

                    result.panning = true;
                    result.lastInputTime = Date.now();
                    unSetAutoRange();
                    scene.cameraChanged();
                    scene.handleAnnotations();
                }
                else if(result.panning) {
                    result.panning = false;
                    scene.relayoutCallback();
                }
                break;
        }

        result.lastPos[0] = x;
        result.lastPos[1] = y;
    }

    result.wheelListener = mouseWheel(element, function(dx, dy) {
        if(!scene.scrollZoom) return false;

        var dataBox = scene.calcDataBox(),
            viewBox = plot.viewBox;

        var lastX = result.lastPos[0],
            lastY = result.lastPos[1];

        var scale = Math.exp(5.0 * dy / (viewBox[3] - viewBox[1]));

        var cx = lastX /
                (viewBox[2] - viewBox[0]) * (dataBox[2] - dataBox[0]) +
            dataBox[0];
        var cy = lastY /
                (viewBox[3] - viewBox[1]) * (dataBox[3] - dataBox[1]) +
            dataBox[1];

        dataBox[0] = (dataBox[0] - cx) * scale + cx;
        dataBox[2] = (dataBox[2] - cx) * scale + cx;
        dataBox[1] = (dataBox[1] - cy) * scale + cy;
        dataBox[3] = (dataBox[3] - cy) * scale + cy;

        scene.setRanges(dataBox);

        result.lastInputTime = Date.now();
        unSetAutoRange();
        scene.cameraChanged();
        scene.handleAnnotations();
        scene.relayoutCallback();

        return true;
    });

    return result;
}

},{"../cartesian/constants":401,"mouse-change":157,"mouse-event-offset":158,"mouse-wheel":160}],423:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plots = require('../plots');
var Axes = require('../cartesian/axes');

var convertHTMLToUnicode = require('../../lib/html2unicode');
var str2RGBArray = require('../../lib/str2rgbarray');

function Axes2DOptions(scene) {
    this.scene = scene;
    this.gl = scene.gl;
    this.pixelRatio = scene.pixelRatio;

    this.screenBox = [0, 0, 1, 1];
    this.viewBox = [0, 0, 1, 1];
    this.dataBox = [-1, -1, 1, 1];

    this.borderLineEnable = [false, false, false, false];
    this.borderLineWidth = [1, 1, 1, 1];
    this.borderLineColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.ticks = [[], []];
    this.tickEnable = [true, true, false, false];
    this.tickPad = [15, 15, 15, 15];
    this.tickAngle = [0, 0, 0, 0];
    this.tickColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];
    this.tickMarkLength = [0, 0, 0, 0];
    this.tickMarkWidth = [0, 0, 0, 0];
    this.tickMarkColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.labels = ['x', 'y'];
    this.labelEnable = [true, true, false, false];
    this.labelAngle = [0, Math.PI / 2, 0, 3.0 * Math.PI / 2];
    this.labelPad = [15, 15, 15, 15];
    this.labelSize = [12, 12];
    this.labelFont = ['sans-serif', 'sans-serif'];
    this.labelColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.title = '';
    this.titleEnable = true;
    this.titleCenter = [0, 0, 0, 0];
    this.titleAngle = 0;
    this.titleColor = [0, 0, 0, 1];
    this.titleFont = 'sans-serif';
    this.titleSize = 18;

    this.gridLineEnable = [true, true];
    this.gridLineColor = [
        [0, 0, 0, 0.5],
        [0, 0, 0, 0.5]
    ];
    this.gridLineWidth = [1, 1];

    this.zeroLineEnable = [true, true];
    this.zeroLineWidth = [1, 1];
    this.zeroLineColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.borderColor = [0, 0, 0, 0];
    this.backgroundColor = [0, 0, 0, 0];

    this.static = this.scene.staticPlot;
}

var proto = Axes2DOptions.prototype;

var AXES = ['xaxis', 'yaxis'];

proto.merge = function(options) {

    // titles are rendered in SVG
    this.titleEnable = false;
    this.backgroundColor = str2RGBArray(options.plot_bgcolor);

    var axisName, ax, axTitle, axMirror;
    var hasAxisInDfltPos, hasAxisInAltrPos, hasSharedAxis, mirrorLines, mirrorTicks;
    var i, j;

    for(i = 0; i < 2; ++i) {
        axisName = AXES[i];

        // get options relevant to this subplot,
        // '_name' is e.g. xaxis, xaxis2, yaxis, yaxis4 ...
        ax = options[this.scene[axisName]._name];

        axTitle = /Click to enter .+ title/.test(ax.title) ? '' : ax.title;

        for(j = 0; j <= 2; j += 2) {
            this.labelEnable[i + j] = false;
            this.labels[i + j] = convertHTMLToUnicode(axTitle);
            this.labelColor[i + j] = str2RGBArray(ax.titlefont.color);
            this.labelFont[i + j] = ax.titlefont.family;
            this.labelSize[i + j] = ax.titlefont.size;
            this.labelPad[i + j] = this.getLabelPad(axisName, ax);

            this.tickEnable[i + j] = false;
            this.tickColor[i + j] = str2RGBArray((ax.tickfont || {}).color);
            this.tickAngle[i + j] = (ax.tickangle === 'auto') ?
                0 :
                Math.PI * -ax.tickangle / 180;
            this.tickPad[i + j] = this.getTickPad(ax);

            this.tickMarkLength[i + j] = 0;
            this.tickMarkWidth[i + j] = ax.tickwidth || 0;
            this.tickMarkColor[i + j] = str2RGBArray(ax.tickcolor);

            this.borderLineEnable[i + j] = false;
            this.borderLineColor[i + j] = str2RGBArray(ax.linecolor);
            this.borderLineWidth[i + j] = ax.linewidth || 0;
        }

        hasSharedAxis = this.hasSharedAxis(ax);
        hasAxisInDfltPos = this.hasAxisInDfltPos(axisName, ax) && !hasSharedAxis;
        hasAxisInAltrPos = this.hasAxisInAltrPos(axisName, ax) && !hasSharedAxis;

        axMirror = ax.mirror || false;
        mirrorLines = hasSharedAxis ?
            (String(axMirror).indexOf('all') !== -1) :  // 'all' or 'allticks'
            !!axMirror;                                 // all but false
        mirrorTicks = hasSharedAxis ?
            (axMirror === 'allticks') :
            (String(axMirror).indexOf('ticks') !== -1); // 'ticks' or 'allticks'

        // Axis titles and tick labels can only appear of one side of the scene
        //  and are never show on subplots that share existing axes.

        if(hasAxisInDfltPos) this.labelEnable[i] = true;
        else if(hasAxisInAltrPos) this.labelEnable[i + 2] = true;

        if(hasAxisInDfltPos) this.tickEnable[i] = ax.showticklabels;
        else if(hasAxisInAltrPos) this.tickEnable[i + 2] = ax.showticklabels;

        // Grid lines and ticks can appear on both sides of the scene
        //  and can appear on subplot that share existing axes via `ax.mirror`.

        if(hasAxisInDfltPos || mirrorLines) this.borderLineEnable[i] = ax.showline;
        if(hasAxisInAltrPos || mirrorLines) this.borderLineEnable[i + 2] = ax.showline;

        if(hasAxisInDfltPos || mirrorTicks) this.tickMarkLength[i] = this.getTickMarkLength(ax);
        if(hasAxisInAltrPos || mirrorTicks) this.tickMarkLength[i + 2] = this.getTickMarkLength(ax);

        this.gridLineEnable[i] = ax.showgrid;
        this.gridLineColor[i] = str2RGBArray(ax.gridcolor);
        this.gridLineWidth[i] = ax.gridwidth;

        this.zeroLineEnable[i] = ax.zeroline;
        this.zeroLineColor[i] = str2RGBArray(ax.zerolinecolor);
        this.zeroLineWidth[i] = ax.zerolinewidth;
    }
};

// is an axis shared with an already-drawn subplot ?
proto.hasSharedAxis = function(ax) {
    var scene = this.scene,
        subplotIds = Plots.getSubplotIds(scene.fullLayout, 'gl2d'),
        list = Axes.findSubplotsWithAxis(subplotIds, ax);

    // if index === 0, then the subplot is already drawn as subplots
    // are drawn in order.
    return (list.indexOf(scene.id) !== 0);
};

// has an axis in default position (i.e. bottom/left) ?
proto.hasAxisInDfltPos = function(axisName, ax) {
    var axSide = ax.side;

    if(axisName === 'xaxis') return (axSide === 'bottom');
    else if(axisName === 'yaxis') return (axSide === 'left');
};

// has an axis in alternate position (i.e. top/right) ?
proto.hasAxisInAltrPos = function(axisName, ax) {
    var axSide = ax.side;

    if(axisName === 'xaxis') return (axSide === 'top');
    else if(axisName === 'yaxis') return (axSide === 'right');
};

proto.getLabelPad = function(axisName, ax) {
    var offsetBase = 1.5,
        fontSize = ax.titlefont.size,
        showticklabels = ax.showticklabels;

    if(axisName === 'xaxis') {
        return (ax.side === 'top') ?
            -10 + fontSize * (offsetBase + (showticklabels ? 1 : 0)) :
            -10 + fontSize * (offsetBase + (showticklabels ? 0.5 : 0));
    }
    else if(axisName === 'yaxis') {
        return (ax.side === 'right') ?
            10 + fontSize * (offsetBase + (showticklabels ? 1 : 0.5)) :
            10 + fontSize * (offsetBase + (showticklabels ? 0.5 : 0));
    }
};

proto.getTickPad = function(ax) {
    return (ax.ticks === 'outside') ? 10 + ax.ticklen : 15;
};

proto.getTickMarkLength = function(ax) {
    if(!ax.ticks) return 0;

    var ticklen = ax.ticklen;

    return (ax.ticks === 'inside') ? -ticklen : ticklen;
};


function createAxes2D(scene) {
    return new Axes2DOptions(scene);
}

module.exports = createAxes2D;

},{"../../lib/html2unicode":351,"../../lib/str2rgbarray":374,"../cartesian/axes":396,"../plots":429}],424:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var overrideAll = require('../../plot_api/edit_types').overrideAll;

var Scene2D = require('./scene2d');
var Plots = require('../plots');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');
var constants = require('../cartesian/constants');
var Cartesian = require('../cartesian');
var fxAttrs = require('../../components/fx/layout_attributes');

exports.name = 'gl2d';

exports.attr = ['xaxis', 'yaxis'];

exports.idRoot = ['x', 'y'];

exports.idRegex = constants.idRegex;

exports.attrRegex = constants.attrRegex;

exports.attributes = require('../cartesian/attributes');

// gl2d uses svg axis attributes verbatim, but overrides editType
// this could potentially be just `layoutAttributes` but it would
// still need special handling somewhere to give it precedence over
// the svg version when both are in use on one plot
exports.layoutAttrOverrides = overrideAll(Cartesian.layoutAttributes, 'plot', 'from-root');

// similar overrides for base plot attributes (and those added by components)
exports.baseLayoutAttrOverrides = overrideAll({
    plot_bgcolor: Plots.layoutAttributes.plot_bgcolor,
    hoverlabel: fxAttrs.hoverlabel
    // dragmode needs calc but only when transitioning TO lasso or select
    // so for now it's left inside _relayout
    // dragmode: fxAttrs.dragmode
}, 'plot', 'nested');

exports.plot = function plotGl2d(gd) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData,
        subplotIds = Plots.getSubplotIds(fullLayout, 'gl2d');

    for(var i = 0; i < subplotIds.length; i++) {
        var subplotId = subplotIds[i],
            subplotObj = fullLayout._plots[subplotId],
            fullSubplotData = Plots.getSubplotData(fullData, 'gl2d', subplotId);

        // ref. to corresp. Scene instance
        var scene = subplotObj._scene2d;

        // If Scene is not instantiated, create one!
        if(scene === undefined) {
            scene = new Scene2D({
                id: subplotId,
                graphDiv: gd,
                container: gd.querySelector('.gl-container'),
                staticPlot: gd._context.staticPlot,
                plotGlPixelRatio: gd._context.plotGlPixelRatio
            },
                fullLayout
            );

            // set ref to Scene instance
            subplotObj._scene2d = scene;
        }

        scene.plot(fullSubplotData, gd.calcdata, fullLayout, gd.layout);
    }
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldSceneKeys = Plots.getSubplotIds(oldFullLayout, 'gl2d');

    for(var i = 0; i < oldSceneKeys.length; i++) {
        var id = oldSceneKeys[i],
            oldSubplot = oldFullLayout._plots[id];

        // old subplot wasn't gl2d; nothing to do
        if(!oldSubplot._scene2d) continue;

        // if no traces are present, delete gl2d subplot
        var subplotData = Plots.getSubplotData(newFullData, 'gl2d', id);
        if(subplotData.length === 0) {
            oldSubplot._scene2d.destroy();
            delete oldFullLayout._plots[id];
        }
    }

    // since we use cartesian interactions, do cartesian clean
    Cartesian.clean.apply(this, arguments);
};

exports.drawFramework = function(gd) {
    if(!gd._context.staticPlot) {
        Cartesian.drawFramework(gd);
    }
};

exports.toSVG = function(gd) {
    var fullLayout = gd._fullLayout,
        subplotIds = Plots.getSubplotIds(fullLayout, 'gl2d');

    for(var i = 0; i < subplotIds.length; i++) {
        var subplot = fullLayout._plots[subplotIds[i]],
            scene = subplot._scene2d;

        var imageData = scene.toImage('png');
        var image = fullLayout._glimages.append('svg:image');

        image.attr({
            xmlns: xmlnsNamespaces.svg,
            'xlink:href': imageData,
            x: 0,
            y: 0,
            width: '100%',
            height: '100%',
            preserveAspectRatio: 'none'
        });

        scene.destroy();
    }
};

exports.updateFx = function(fullLayout) {
    var subplotIds = Plots.getSubplotIds(fullLayout, 'gl2d');

    for(var i = 0; i < subplotIds.length; i++) {
        var subplotObj = fullLayout._plots[subplotIds[i]]._scene2d;
        subplotObj.updateFx(fullLayout.dragmode);
    }
};

},{"../../components/fx/layout_attributes":275,"../../constants/xmlns_namespaces":336,"../../plot_api/edit_types":380,"../cartesian":406,"../cartesian/attributes":395,"../cartesian/constants":401,"../plots":429,"./scene2d":425}],425:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');
var Fx = require('../../components/fx');

var createPlot2D = require('gl-plot2d');
var createSpikes = require('gl-spikes2d');
var createSelectBox = require('gl-select-box');
var getContext = require('webgl-context');

var createOptions = require('./convert');
var createCamera = require('./camera');
var convertHTMLToUnicode = require('../../lib/html2unicode');
var showNoWebGlMsg = require('../../lib/show_no_webgl_msg');
var axisConstraints = require('../../plots/cartesian/constraints');
var enforceAxisConstraints = axisConstraints.enforce;
var cleanAxisConstraints = axisConstraints.clean;

var AXES = ['xaxis', 'yaxis'];
var STATIC_CANVAS, STATIC_CONTEXT;


function Scene2D(options, fullLayout) {
    this.container = options.container;
    this.graphDiv = options.graphDiv;
    this.pixelRatio = options.plotGlPixelRatio || window.devicePixelRatio;
    this.id = options.id;
    this.staticPlot = !!options.staticPlot;
    this.scrollZoom = this.graphDiv._context.scrollZoom;

    this.fullData = null;
    this.updateRefs(fullLayout);

    this.makeFramework();

    // update options
    this.glplotOptions = createOptions(this);
    this.glplotOptions.merge(fullLayout);

    // create the plot
    this.glplot = createPlot2D(this.glplotOptions);

    // create camera
    this.camera = createCamera(this);

    // trace set
    this.traces = {};

    // create axes spikes
    this.spikes = createSpikes(this.glplot);

    this.selectBox = createSelectBox(this.glplot, {
        innerFill: false,
        outerFill: true
    });

    // last button state
    this.lastButtonState = 0;

    // last pick result
    this.pickResult = null;

    // is the mouse over the plot?
    // it's OK if this says true when it's not, so long as
    // when we get a mouseout we set it to false before handling
    this.isMouseOver = true;

    this.bounds = [Infinity, Infinity, -Infinity, -Infinity];

    // flag to stop render loop
    this.stopped = false;

    // redraw the plot
    this.redraw = this.draw.bind(this);
    this.redraw();
}

module.exports = Scene2D;

var proto = Scene2D.prototype;

proto.makeFramework = function() {

    // create canvas and gl context
    if(this.staticPlot) {
        if(!STATIC_CONTEXT) {
            STATIC_CANVAS = document.createElement('canvas');

            STATIC_CONTEXT = getContext({
                canvas: STATIC_CANVAS,
                preserveDrawingBuffer: false,
                premultipliedAlpha: true,
                antialias: true
            });

            if(!STATIC_CONTEXT) {
                throw new Error('Error creating static canvas/context for image server');
            }
        }

        this.canvas = STATIC_CANVAS;
        this.gl = STATIC_CONTEXT;
    }
    else {
        var liveCanvas = document.createElement('canvas');

        var gl = getContext({
            canvas: liveCanvas,
            premultipliedAlpha: true
        });

        if(!gl) showNoWebGlMsg(this);

        this.canvas = liveCanvas;
        this.gl = gl;
    }

    // position the canvas
    var canvas = this.canvas;

    canvas.style.width = '100%';
    canvas.style.height = '100%';
    canvas.style.position = 'absolute';
    canvas.style.top = '0px';
    canvas.style.left = '0px';
    canvas.style['pointer-events'] = 'none';

    this.updateSize(canvas);

    // disabling user select on the canvas
    // sanitizes double-clicks interactions
    // ref: https://github.com/plotly/plotly.js/issues/744
    canvas.className += 'user-select-none';

    // create SVG container for hover text
    var svgContainer = this.svgContainer = document.createElementNS(
        'http://www.w3.org/2000/svg',
        'svg');
    svgContainer.style.position = 'absolute';
    svgContainer.style.top = svgContainer.style.left = '0px';
    svgContainer.style.width = svgContainer.style.height = '100%';
    svgContainer.style['z-index'] = 20;
    svgContainer.style['pointer-events'] = 'none';

    // create div to catch the mouse event
    var mouseContainer = this.mouseContainer = document.createElement('div');
    mouseContainer.style.position = 'absolute';
    mouseContainer.style['pointer-events'] = 'auto';

    // append canvas, hover svg and mouse div to container
    var container = this.container;
    container.appendChild(canvas);
    container.appendChild(svgContainer);
    container.appendChild(mouseContainer);

    var self = this;
    mouseContainer.addEventListener('mouseout', function() {
        self.isMouseOver = false;
        self.unhover();
    });
    mouseContainer.addEventListener('mouseover', function() {
        self.isMouseOver = true;
    });
};

proto.toImage = function(format) {
    if(!format) format = 'png';

    this.stopped = true;
    if(this.staticPlot) this.container.appendChild(STATIC_CANVAS);

    // update canvas size
    this.updateSize(this.canvas);

    // force redraw
    this.glplot.setDirty();
    this.glplot.draw();

    // grab context and yank out pixels
    var gl = this.glplot.gl,
        w = gl.drawingBufferWidth,
        h = gl.drawingBufferHeight;

    gl.bindFramebuffer(gl.FRAMEBUFFER, null);

    var pixels = new Uint8Array(w * h * 4);
    gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, pixels);

    // flip pixels
    for(var j = 0, k = h - 1; j < k; ++j, --k) {
        for(var i = 0; i < w; ++i) {
            for(var l = 0; l < 4; ++l) {
                var tmp = pixels[4 * (w * j + i) + l];
                pixels[4 * (w * j + i) + l] = pixels[4 * (w * k + i) + l];
                pixels[4 * (w * k + i) + l] = tmp;
            }
        }
    }

    var canvas = document.createElement('canvas');
    canvas.width = w;
    canvas.height = h;

    var context = canvas.getContext('2d');
    var imageData = context.createImageData(w, h);
    imageData.data.set(pixels);
    context.putImageData(imageData, 0, 0);

    var dataURL;

    switch(format) {
        case 'jpeg':
            dataURL = canvas.toDataURL('image/jpeg');
            break;
        case 'webp':
            dataURL = canvas.toDataURL('image/webp');
            break;
        default:
            dataURL = canvas.toDataURL('image/png');
    }

    if(this.staticPlot) this.container.removeChild(STATIC_CANVAS);

    return dataURL;
};

proto.updateSize = function(canvas) {
    if(!canvas) canvas = this.canvas;

    var pixelRatio = this.pixelRatio,
        fullLayout = this.fullLayout;

    var width = fullLayout.width,
        height = fullLayout.height,
        pixelWidth = Math.ceil(pixelRatio * width) |0,
        pixelHeight = Math.ceil(pixelRatio * height) |0;

    // check for resize
    if(canvas.width !== pixelWidth || canvas.height !== pixelHeight) {
        canvas.width = pixelWidth;
        canvas.height = pixelHeight;
    }

    // make sure plots render right thing
    if(this.redraw) this.redraw();

    return canvas;
};

proto.computeTickMarks = function() {
    this.xaxis.setScale();
    this.yaxis.setScale();

    var nextTicks = [
        Axes.calcTicks(this.xaxis),
        Axes.calcTicks(this.yaxis)
    ];

    for(var j = 0; j < 2; ++j) {
        for(var i = 0; i < nextTicks[j].length; ++i) {
            // coercing tick value (may not be a string) to a string
            nextTicks[j][i].text = convertHTMLToUnicode(nextTicks[j][i].text + '');
        }
    }

    return nextTicks;
};

function compareTicks(a, b) {
    for(var i = 0; i < 2; ++i) {
        var aticks = a[i],
            bticks = b[i];

        if(aticks.length !== bticks.length) return true;

        for(var j = 0; j < aticks.length; ++j) {
            if(aticks[j].x !== bticks[j].x) return true;
        }
    }

    return false;
}

proto.updateRefs = function(newFullLayout) {
    this.fullLayout = newFullLayout;

    var spmatch = Axes.subplotMatch,
        xaxisName = 'xaxis' + this.id.match(spmatch)[1],
        yaxisName = 'yaxis' + this.id.match(spmatch)[2];

    this.xaxis = this.fullLayout[xaxisName];
    this.yaxis = this.fullLayout[yaxisName];
};

proto.relayoutCallback = function() {
    var graphDiv = this.graphDiv,
        xaxis = this.xaxis,
        yaxis = this.yaxis,
        layout = graphDiv.layout;

    // update user layout
    layout.xaxis.autorange = xaxis.autorange;
    layout.xaxis.range = xaxis.range.slice(0);
    layout.yaxis.autorange = yaxis.autorange;
    layout.yaxis.range = yaxis.range.slice(0);

    // make a meaningful value to be passed on to the possible 'plotly_relayout' subscriber(s)
    // scene.camera has no many useful projection or scale information
    // helps determine which one is the latest input (if async)
    var update = {
        lastInputTime: this.camera.lastInputTime
    };

    update[xaxis._name] = xaxis.range.slice(0);
    update[yaxis._name] = yaxis.range.slice(0);

    graphDiv.emit('plotly_relayout', update);
};

proto.cameraChanged = function() {
    var camera = this.camera;

    this.glplot.setDataBox(this.calcDataBox());

    var nextTicks = this.computeTickMarks();
    var curTicks = this.glplotOptions.ticks;

    if(compareTicks(nextTicks, curTicks)) {
        this.glplotOptions.ticks = nextTicks;
        this.glplotOptions.dataBox = camera.dataBox;
        this.glplot.update(this.glplotOptions);
        this.handleAnnotations();
    }
};

proto.handleAnnotations = function() {
    var gd = this.graphDiv,
        annotations = this.fullLayout.annotations;

    for(var i = 0; i < annotations.length; i++) {
        var ann = annotations[i];

        if(ann.xref === this.xaxis._id && ann.yref === this.yaxis._id) {
            Registry.getComponentMethod('annotations', 'drawOne')(gd, i);
        }
    }
};

proto.destroy = function() {
    if(!this.glplot) return;

    var traces = this.traces;

    if(traces) {
        Object.keys(traces).map(function(key) {
            traces[key].dispose();
            delete traces[key];
        });
    }

    this.glplot.dispose();

    if(!this.staticPlot) this.container.removeChild(this.canvas);
    this.container.removeChild(this.svgContainer);
    this.container.removeChild(this.mouseContainer);

    this.fullData = null;
    this.glplot = null;
    this.stopped = true;
    this.camera.mouseListener.enabled = false;
    this.mouseContainer.removeEventListener('wheel', this.camera.wheelListener);
    this.camera = null;
};

proto.plot = function(fullData, calcData, fullLayout) {
    var glplot = this.glplot;

    this.updateRefs(fullLayout);
    this.updateTraces(fullData, calcData);
    this.updateFx(fullLayout.dragmode);

    var width = fullLayout.width,
        height = fullLayout.height;

    this.updateSize(this.canvas);

    var options = this.glplotOptions;
    options.merge(fullLayout);
    options.screenBox = [0, 0, width, height];

    var mockGraphDiv = {_fullLayout: {
        _axisConstraintGroups: this.graphDiv._fullLayout._axisConstraintGroups,
        xaxis: this.xaxis,
        yaxis: this.yaxis
    }};

    cleanAxisConstraints(mockGraphDiv, this.xaxis);
    cleanAxisConstraints(mockGraphDiv, this.yaxis);

    var size = fullLayout._size,
        domainX = this.xaxis.domain,
        domainY = this.yaxis.domain;

    options.viewBox = [
        size.l + domainX[0] * size.w,
        size.b + domainY[0] * size.h,
        (width - size.r) - (1 - domainX[1]) * size.w,
        (height - size.t) - (1 - domainY[1]) * size.h
    ];

    this.mouseContainer.style.width = size.w * (domainX[1] - domainX[0]) + 'px';
    this.mouseContainer.style.height = size.h * (domainY[1] - domainY[0]) + 'px';
    this.mouseContainer.height = size.h * (domainY[1] - domainY[0]);
    this.mouseContainer.style.left = size.l + domainX[0] * size.w + 'px';
    this.mouseContainer.style.top = size.t + (1 - domainY[1]) * size.h + 'px';

    var bounds = this.bounds;
    bounds[0] = bounds[1] = Infinity;
    bounds[2] = bounds[3] = -Infinity;

    var traceIds = Object.keys(this.traces);
    var ax, i;

    for(i = 0; i < traceIds.length; ++i) {
        var traceObj = this.traces[traceIds[i]];

        for(var k = 0; k < 2; ++k) {
            bounds[k] = Math.min(bounds[k], traceObj.bounds[k]);
            bounds[k + 2] = Math.max(bounds[k + 2], traceObj.bounds[k + 2]);
        }
    }

    for(i = 0; i < 2; ++i) {
        if(bounds[i] > bounds[i + 2]) {
            bounds[i] = -1;
            bounds[i + 2] = 1;
        }

        ax = this[AXES[i]];
        ax._length = options.viewBox[i + 2] - options.viewBox[i];

        Axes.doAutoRange(ax);
        ax.setScale();
    }

    enforceAxisConstraints(mockGraphDiv);

    options.ticks = this.computeTickMarks();

    options.dataBox = this.calcDataBox();

    options.merge(fullLayout);
    glplot.update(options);

    // force redraw so that promise is returned when rendering is completed
    this.glplot.draw();
};

proto.calcDataBox = function() {
    var xaxis = this.xaxis,
        yaxis = this.yaxis,
        xrange = xaxis.range,
        yrange = yaxis.range,
        xr2l = xaxis.r2l,
        yr2l = yaxis.r2l;

    return [xr2l(xrange[0]), yr2l(yrange[0]), xr2l(xrange[1]), yr2l(yrange[1])];
};

proto.setRanges = function(dataBox) {
    var xaxis = this.xaxis,
        yaxis = this.yaxis,
        xl2r = xaxis.l2r,
        yl2r = yaxis.l2r;

    xaxis.range = [xl2r(dataBox[0]), xl2r(dataBox[2])];
    yaxis.range = [yl2r(dataBox[1]), yl2r(dataBox[3])];
};

proto.updateTraces = function(fullData, calcData) {
    var traceIds = Object.keys(this.traces);
    var i, j, fullTrace;

    this.fullData = fullData;

    // remove empty traces
    trace_id_loop:
    for(i = 0; i < traceIds.length; i++) {
        var oldUid = traceIds[i],
            oldTrace = this.traces[oldUid];

        for(j = 0; j < fullData.length; j++) {
            fullTrace = fullData[j];

            if(fullTrace.uid === oldUid && fullTrace.type === oldTrace.type) {
                continue trace_id_loop;
            }
        }

        oldTrace.dispose();
        delete this.traces[oldUid];
    }

    // update / create trace objects
    for(i = 0; i < fullData.length; i++) {
        fullTrace = fullData[i];
        var calcTrace = calcData[i],
            traceObj = this.traces[fullTrace.uid];

        if(traceObj) traceObj.update(fullTrace, calcTrace);
        else {
            traceObj = fullTrace._module.plot(this, fullTrace, calcTrace);
            this.traces[fullTrace.uid] = traceObj;
        }
    }

    // order object per traces
    this.glplot.objects.sort(function(a, b) {
        return a._trace.index - b._trace.index;
    });
};

proto.updateFx = function(dragmode) {
    // switch to svg interactions in lasso/select mode
    if(dragmode === 'lasso' || dragmode === 'select') {
        this.mouseContainer.style['pointer-events'] = 'none';
    } else {
        this.mouseContainer.style['pointer-events'] = 'auto';
    }

    // set proper cursor
    if(dragmode === 'pan') {
        this.mouseContainer.style.cursor = 'move';
    }
    else if(dragmode === 'zoom') {
        this.mouseContainer.style.cursor = 'crosshair';
    }
    else {
        this.mouseContainer.style.cursor = null;
    }
};

proto.emitPointAction = function(nextSelection, eventType) {
    var uid = nextSelection.trace.uid;
    var ptNumber = nextSelection.pointIndex;
    var trace;

    for(var i = 0; i < this.fullData.length; i++) {
        if(this.fullData[i].uid === uid) {
            trace = this.fullData[i];
        }
    }

    var pointData = {
        x: nextSelection.traceCoord[0],
        y: nextSelection.traceCoord[1],
        curveNumber: trace.index,
        pointNumber: ptNumber,
        data: trace._input,
        fullData: this.fullData,
        xaxis: this.xaxis,
        yaxis: this.yaxis
    };

    Fx.appendArrayPointValue(pointData, trace, ptNumber);

    this.graphDiv.emit(eventType, {points: [pointData]});
};

proto.draw = function() {
    if(this.stopped) return;

    requestAnimationFrame(this.redraw);

    var glplot = this.glplot,
        camera = this.camera,
        mouseListener = camera.mouseListener,
        mouseUp = this.lastButtonState === 1 && mouseListener.buttons === 0,
        fullLayout = this.fullLayout;

    this.lastButtonState = mouseListener.buttons;

    this.cameraChanged();

    var x = mouseListener.x * glplot.pixelRatio;
    var y = this.canvas.height - glplot.pixelRatio * mouseListener.y;

    var result;

    if(camera.boxEnabled && fullLayout.dragmode === 'zoom') {
        this.selectBox.enabled = true;

        var selectBox = this.selectBox.selectBox = [
            Math.min(camera.boxStart[0], camera.boxEnd[0]),
            Math.min(camera.boxStart[1], camera.boxEnd[1]),
            Math.max(camera.boxStart[0], camera.boxEnd[0]),
            Math.max(camera.boxStart[1], camera.boxEnd[1])
        ];

        // 1D zoom
        for(var i = 0; i < 2; i++) {
            if(camera.boxStart[i] === camera.boxEnd[i]) {
                selectBox[i] = glplot.dataBox[i];
                selectBox[i + 2] = glplot.dataBox[i + 2];
            }
        }

        glplot.setDirty();
    }
    else if(!camera.panning && this.isMouseOver) {
        this.selectBox.enabled = false;

        var size = fullLayout._size,
            domainX = this.xaxis.domain,
            domainY = this.yaxis.domain;

        result = glplot.pick(
            (x / glplot.pixelRatio) + size.l + domainX[0] * size.w,
            (y / glplot.pixelRatio) - (size.t + (1 - domainY[1]) * size.h)
        );

        var nextSelection = result && result.object._trace.handlePick(result);

        if(nextSelection && mouseUp) {
            this.emitPointAction(nextSelection, 'plotly_click');
        }

        if(result && result.object._trace.hoverinfo !== 'skip' && fullLayout.hovermode) {

            if(nextSelection && (
                !this.lastPickResult ||
                this.lastPickResult.traceUid !== nextSelection.trace.uid ||
                this.lastPickResult.dataCoord[0] !== nextSelection.dataCoord[0] ||
                this.lastPickResult.dataCoord[1] !== nextSelection.dataCoord[1])
            ) {
                var selection = nextSelection;

                this.lastPickResult = {
                    traceUid: nextSelection.trace ? nextSelection.trace.uid : null,
                    dataCoord: nextSelection.dataCoord.slice()
                };
                this.spikes.update({ center: result.dataCoord });

                selection.screenCoord = [
                    ((glplot.viewBox[2] - glplot.viewBox[0]) *
                    (result.dataCoord[0] - glplot.dataBox[0]) /
                        (glplot.dataBox[2] - glplot.dataBox[0]) + glplot.viewBox[0]) /
                            glplot.pixelRatio,
                    (this.canvas.height - (glplot.viewBox[3] - glplot.viewBox[1]) *
                    (result.dataCoord[1] - glplot.dataBox[1]) /
                        (glplot.dataBox[3] - glplot.dataBox[1]) - glplot.viewBox[1]) /
                            glplot.pixelRatio
                ];

                // this needs to happen before the next block that deletes traceCoord data
                // also it's important to copy, otherwise data is lost by the time event data is read
                this.emitPointAction(nextSelection, 'plotly_hover');

                var trace = this.fullData[selection.trace.index] || {};
                var ptNumber = selection.pointIndex;
                var hoverinfo = Fx.castHoverinfo(trace, fullLayout, ptNumber);

                if(hoverinfo && hoverinfo !== 'all') {
                    var parts = hoverinfo.split('+');
                    if(parts.indexOf('x') === -1) selection.traceCoord[0] = undefined;
                    if(parts.indexOf('y') === -1) selection.traceCoord[1] = undefined;
                    if(parts.indexOf('z') === -1) selection.traceCoord[2] = undefined;
                    if(parts.indexOf('text') === -1) selection.textLabel = undefined;
                    if(parts.indexOf('name') === -1) selection.name = undefined;
                }

                Fx.loneHover({
                    x: selection.screenCoord[0],
                    y: selection.screenCoord[1],
                    xLabel: this.hoverFormatter('xaxis', selection.traceCoord[0]),
                    yLabel: this.hoverFormatter('yaxis', selection.traceCoord[1]),
                    zLabel: selection.traceCoord[2],
                    text: selection.textLabel,
                    name: selection.name,
                    color: Fx.castHoverOption(trace, ptNumber, 'bgcolor') || selection.color,
                    borderColor: Fx.castHoverOption(trace, ptNumber, 'bordercolor'),
                    fontFamily: Fx.castHoverOption(trace, ptNumber, 'font.family'),
                    fontSize: Fx.castHoverOption(trace, ptNumber, 'font.size'),
                    fontColor: Fx.castHoverOption(trace, ptNumber, 'font.color')
                }, {
                    container: this.svgContainer,
                    gd: this.graphDiv
                });
            }
        }
    }

    // Remove hover effects if we're not over a point OR
    // if we're zooming or panning (in which case result is not set)
    if(!result) {
        this.unhover();
    }

    glplot.draw();
};

proto.unhover = function() {
    if(this.lastPickResult) {
        this.spikes.update({});
        this.lastPickResult = null;
        this.graphDiv.emit('plotly_unhover');
        Fx.loneUnhover(this.svgContainer);
    }
};

proto.hoverFormatter = function(axisName, val) {
    if(val === undefined) return undefined;

    var axis = this[axisName];
    return Axes.tickText(axis, axis.c2l(val), 'hover').text;
};

},{"../../components/fx":274,"../../lib/html2unicode":351,"../../lib/show_no_webgl_msg":372,"../../plots/cartesian/axes":396,"../../plots/cartesian/constraints":403,"../../registry":436,"./camera":422,"./convert":423,"gl-plot2d":102,"gl-select-box":130,"gl-spikes2d":139,"webgl-context":213}],426:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

function xformMatrix(m, v) {
    var out = [0, 0, 0, 0];
    var i, j;

    for(i = 0; i < 4; ++i) {
        for(j = 0; j < 4; ++j) {
            out[j] += m[4 * i + j] * v[i];
        }
    }

    return out;
}

function project(camera, v) {
    var p = xformMatrix(camera.projection,
        xformMatrix(camera.view,
        xformMatrix(camera.model, [v[0], v[1], v[2], 1])));
    return p;
}

module.exports = project;

},{}],427:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('./font_attributes');
var colorAttrs = require('../components/color/attributes');

var globalFont = fontAttrs({
    editType: 'calc',
    
});
globalFont.family.dflt = '"Open Sans", verdana, arial, sans-serif';
globalFont.size.dflt = 12;
globalFont.color.dflt = colorAttrs.defaultLine;

module.exports = {
    font: globalFont,
    title: {
        valType: 'string',
        
        dflt: 'Click to enter Plot title',
        editType: 'layoutstyle',
        
    },
    titlefont: fontAttrs({
        editType: 'layoutstyle',
        
    }),
    autosize: {
        valType: 'boolean',
        
        dflt: false,
        // autosize, width, and height get special editType treatment in _relayout
        // so we can handle noop resizes more efficiently
        editType: 'none',
        
    },
    width: {
        valType: 'number',
        
        min: 10,
        dflt: 700,
        editType: 'none',
        
    },
    height: {
        valType: 'number',
        
        min: 10,
        dflt: 450,
        editType: 'none',
        
    },
    margin: {
        l: {
            valType: 'number',
            
            min: 0,
            dflt: 80,
            editType: 'calc',
            
        },
        r: {
            valType: 'number',
            
            min: 0,
            dflt: 80,
            editType: 'calc',
            
        },
        t: {
            valType: 'number',
            
            min: 0,
            dflt: 100,
            editType: 'calc',
            
        },
        b: {
            valType: 'number',
            
            min: 0,
            dflt: 80,
            editType: 'calc',
            
        },
        pad: {
            valType: 'number',
            
            min: 0,
            dflt: 0,
            editType: 'calc',
            
        },
        autoexpand: {
            valType: 'boolean',
            
            dflt: true,
            editType: 'calc'
        },
        editType: 'calc'
    },
    paper_bgcolor: {
        valType: 'color',
        
        dflt: colorAttrs.background,
        editType: 'plot',
        
    },
    plot_bgcolor: {
        // defined here, but set in Axes.supplyLayoutDefaults
        // because it needs to know if there are (2D) axes or not
        valType: 'color',
        
        dflt: colorAttrs.background,
        editType: 'layoutstyle',
        
    },
    separators: {
        valType: 'string',
        
        dflt: '.,',
        editType: 'plot',
        
    },
    hidesources: {
        valType: 'boolean',
        
        dflt: false,
        editType: 'plot',
        
    },
    smith: {
        // will become a boolean if/when we implement this
        valType: 'enumerated',
        
        values: [false],
        dflt: false,
        editType: 'none'
    },
    showlegend: {
        // handled in legend.supplyLayoutDefaults
        // but included here because it's not in the legend object
        valType: 'boolean',
        
        editType: 'legend',
        
    }
};

},{"../components/color/attributes":232,"./font_attributes":420}],428:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// This is used exclusively by components inside component arrays,
// hence the 'arraydraw' editType. If this ever gets used elsewhere
// we could generalize it as a function ala font_attributes
module.exports = {
    t: {
        valType: 'number',
        dflt: 0,
        
        editType: 'arraydraw',
        
    },
    r: {
        valType: 'number',
        dflt: 0,
        
        editType: 'arraydraw',
        
    },
    b: {
        valType: 'number',
        dflt: 0,
        
        editType: 'arraydraw',
        
    },
    l: {
        valType: 'number',
        dflt: 0,
        
        editType: 'arraydraw',
        
    },
    editType: 'arraydraw'
};

},{}],429:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Plotly = require('../plotly');
var PlotSchema = require('../plot_api/plot_schema');
var Registry = require('../registry');
var Lib = require('../lib');
var Color = require('../components/color');
var BADNUM = require('../constants/numerical').BADNUM;

var plots = module.exports = {};

var animationAttrs = require('./animation_attributes');
var frameAttrs = require('./frame_attributes');

var relinkPrivateKeys = Lib.relinkPrivateKeys;

// Expose registry methods on Plots for backward-compatibility
Lib.extendFlat(plots, Registry);

plots.attributes = require('./attributes');
plots.attributes.type.values = plots.allTypes;
plots.fontAttrs = require('./font_attributes');
plots.layoutAttributes = require('./layout_attributes');

// TODO make this a plot attribute?
plots.fontWeight = 'normal';

var subplotsRegistry = plots.subplotsRegistry;
var transformsRegistry = plots.transformsRegistry;

var ErrorBars = require('../components/errorbars');

var commandModule = require('./command');
plots.executeAPICommand = commandModule.executeAPICommand;
plots.computeAPICommandBindings = commandModule.computeAPICommandBindings;
plots.manageCommandObserver = commandModule.manageCommandObserver;
plots.hasSimpleAPICommandBindings = commandModule.hasSimpleAPICommandBindings;

/**
 * Find subplot ids in data.
 * Meant to be used in the defaults step.
 *
 * Use plots.getSubplotIds to grab the current
 * subplot ids later on in Plotly.plot.
 *
 * @param {array} data plotly data array
 *      (intended to be _fullData, but does not have to be).
 * @param {string} type subplot type to look for.
 *
 * @return {array} list of subplot ids (strings).
 *      N.B. these ids possibly un-ordered.
 *
 * TODO incorporate cartesian/gl2d axis finders in this paradigm.
 */
plots.findSubplotIds = function findSubplotIds(data, type) {
    var subplotIds = [];

    if(!plots.subplotsRegistry[type]) return subplotIds;

    var attr = plots.subplotsRegistry[type].attr;

    for(var i = 0; i < data.length; i++) {
        var trace = data[i];

        if(plots.traceIs(trace, type) && subplotIds.indexOf(trace[attr]) === -1) {
            subplotIds.push(trace[attr]);
        }
    }

    return subplotIds;
};

/**
 * Get the ids of the current subplots.
 *
 * @param {object} layout plotly full layout object.
 * @param {string} type subplot type to look for.
 *
 * @return {array} list of ordered subplot ids (strings).
 *
 */
plots.getSubplotIds = function getSubplotIds(layout, type) {
    var _module = plots.subplotsRegistry[type];

    if(!_module) return [];

    // layout must be 'fullLayout' here
    if(type === 'cartesian' && (!layout._has || !layout._has('cartesian'))) return [];
    if(type === 'gl2d' && (!layout._has || !layout._has('gl2d'))) return [];
    if(type === 'cartesian' || type === 'gl2d') {
        return Object.keys(layout._plots || {});
    }

    var attrRegex = _module.attrRegex,
        layoutKeys = Object.keys(layout),
        subplotIds = [];

    for(var i = 0; i < layoutKeys.length; i++) {
        var layoutKey = layoutKeys[i];

        if(attrRegex.test(layoutKey)) subplotIds.push(layoutKey);
    }

    // order the ids
    var idLen = _module.idRoot.length;
    subplotIds.sort(function(a, b) {
        var aNum = +(a.substr(idLen) || 1),
            bNum = +(b.substr(idLen) || 1);
        return aNum - bNum;
    });

    return subplotIds;
};

/**
 * Get the data trace(s) associated with a given subplot.
 *
 * @param {array} data  plotly full data array.
 * @param {string} type subplot type to look for.
 * @param {string} subplotId subplot id to look for.
 *
 * @return {array} list of trace objects.
 *
 */
plots.getSubplotData = function getSubplotData(data, type, subplotId) {
    if(!plots.subplotsRegistry[type]) return [];

    var attr = plots.subplotsRegistry[type].attr,
        subplotData = [],
        trace;

    for(var i = 0; i < data.length; i++) {
        trace = data[i];

        if(type === 'gl2d' && plots.traceIs(trace, 'gl2d')) {
            var spmatch = Plotly.Axes.subplotMatch,
                subplotX = 'x' + subplotId.match(spmatch)[1],
                subplotY = 'y' + subplotId.match(spmatch)[2];

            if(trace[attr[0]] === subplotX && trace[attr[1]] === subplotY) {
                subplotData.push(trace);
            }
        }
        else {
            if(trace[attr] === subplotId) subplotData.push(trace);
        }
    }

    return subplotData;
};

/**
 * Get calcdata traces(s) associated with a given subplot
 *
 * @param {array} calcData (as in gd.calcdata)
 * @param {string} type subplot type
 * @param {string} subplotId subplot id to look for
 *
 * @return {array} array of calcdata traces
 */
plots.getSubplotCalcData = function(calcData, type, subplotId) {
    if(!plots.subplotsRegistry[type]) return [];

    var attr = plots.subplotsRegistry[type].attr;
    var subplotCalcData = [];

    for(var i = 0; i < calcData.length; i++) {
        var calcTrace = calcData[i],
            trace = calcTrace[0].trace;

        if(trace[attr] === subplotId) subplotCalcData.push(calcTrace);
    }

    return subplotCalcData;
};

// in some cases the browser doesn't seem to know how big
// the text is at first, so it needs to draw it,
// then wait a little, then draw it again
plots.redrawText = function(gd) {

    // do not work if polar is present
    if((gd.data && gd.data[0] && gd.data[0].r)) return;

    return new Promise(function(resolve) {
        setTimeout(function() {
            Registry.getComponentMethod('annotations', 'draw')(gd);
            Registry.getComponentMethod('legend', 'draw')(gd);

            (gd.calcdata || []).forEach(function(d) {
                if(d[0] && d[0].t && d[0].t.cb) d[0].t.cb();
            });

            resolve(plots.previousPromises(gd));
        }, 300);
    });
};

// resize plot about the container size
plots.resize = function(gd) {
    return new Promise(function(resolve, reject) {

        function isHidden(gd) {
            var display = window.getComputedStyle(gd).display;
            return !display || display === 'none';
        }

        if(!gd || isHidden(gd)) {
            reject(new Error('Resize must be passed a displayed plot div element.'));
        }

        if(gd._redrawTimer) clearTimeout(gd._redrawTimer);

        gd._redrawTimer = setTimeout(function() {
            // return if there is nothing to resize
            if(gd.layout.width && gd.layout.height) {
                resolve(gd);
                return;
            }

            delete gd.layout.width;
            delete gd.layout.height;

            // autosizing doesn't count as a change that needs saving
            var oldchanged = gd.changed;

            // nor should it be included in the undo queue
            gd.autoplay = true;

            Plotly.relayout(gd, { autosize: true }).then(function() {
                gd.changed = oldchanged;
                resolve(gd);
            });
        }, 100);
    });
};


// for use in Lib.syncOrAsync, check if there are any
// pending promises in this plot and wait for them
plots.previousPromises = function(gd) {
    if((gd._promises || []).length) {
        return Promise.all(gd._promises)
            .then(function() { gd._promises = []; });
    }
};

/**
 * Adds the 'Edit chart' link.
 * Note that now Plotly.plot() calls this so it can regenerate whenever it replots
 *
 * Add source links to your graph inside the 'showSources' config argument.
 */
plots.addLinks = function(gd) {
    // Do not do anything if showLink and showSources are not set to true in config
    if(!gd._context.showLink && !gd._context.showSources) return;

    var fullLayout = gd._fullLayout;

    var linkContainer = fullLayout._paper
        .selectAll('text.js-plot-link-container').data([0]);

    linkContainer.enter().append('text')
        .classed('js-plot-link-container', true)
        .style({
            'font-family': '"Open Sans", Arial, sans-serif',
            'font-size': '12px',
            'fill': Color.defaultLine,
            'pointer-events': 'all'
        })
        .each(function() {
            var links = d3.select(this);
            links.append('tspan').classed('js-link-to-tool', true);
            links.append('tspan').classed('js-link-spacer', true);
            links.append('tspan').classed('js-sourcelinks', true);
        });

    // The text node inside svg
    var text = linkContainer.node(),
        attrs = {
            y: fullLayout._paper.attr('height') - 9
        };

    // If text's width is bigger than the layout
    // Check that text is a child node or document.body
    // because otherwise IE/Edge might throw an exception
    // when calling getComputedTextLength().
    // Apparently offsetParent is null for invisibles.
    if(document.body.contains(text) && text.getComputedTextLength() >= (fullLayout.width - 20)) {
        // Align the text at the left
        attrs['text-anchor'] = 'start';
        attrs.x = 5;
    }
    else {
        // Align the text at the right
        attrs['text-anchor'] = 'end';
        attrs.x = fullLayout._paper.attr('width') - 7;
    }

    linkContainer.attr(attrs);

    var toolspan = linkContainer.select('.js-link-to-tool'),
        spacespan = linkContainer.select('.js-link-spacer'),
        sourcespan = linkContainer.select('.js-sourcelinks');

    if(gd._context.showSources) gd._context.showSources(gd);

    // 'view in plotly' link for embedded plots
    if(gd._context.showLink) positionPlayWithData(gd, toolspan);

    // separator if we have both sources and tool link
    spacespan.text((toolspan.text() && sourcespan.text()) ? ' - ' : '');
};

// note that now this function is only adding the brand in
// iframes and 3rd-party apps
function positionPlayWithData(gd, container) {
    container.text('');
    var link = container.append('a')
        .attr({
            'xlink:xlink:href': '#',
            'class': 'link--impt link--embedview',
            'font-weight': 'bold'
        })
        .text(gd._context.linkText + ' ' + String.fromCharCode(187));

    if(gd._context.sendData) {
        link.on('click', function() {
            plots.sendDataToCloud(gd);
        });
    }
    else {
        var path = window.location.pathname.split('/');
        var query = window.location.search;
        link.attr({
            'xlink:xlink:show': 'new',
            'xlink:xlink:href': '/' + path[2].split('.')[0] + '/' + path[1] + query
        });
    }
}

plots.sendDataToCloud = function(gd) {
    gd.emit('plotly_beforeexport');

    var baseUrl = (window.PLOTLYENV && window.PLOTLYENV.BASE_URL) || 'https://plot.ly';

    var hiddenformDiv = d3.select(gd)
        .append('div')
        .attr('id', 'hiddenform')
        .style('display', 'none');

    var hiddenform = hiddenformDiv
        .append('form')
        .attr({
            action: baseUrl + '/external',
            method: 'post',
            target: '_blank'
        });

    var hiddenformInput = hiddenform
        .append('input')
        .attr({
            type: 'text',
            name: 'data'
        });

    hiddenformInput.node().value = plots.graphJson(gd, false, 'keepdata');
    hiddenform.node().submit();
    hiddenformDiv.remove();

    gd.emit('plotly_afterexport');
    return false;
};

// Fill in default values:
//
// gd.data, gd.layout:
//   are precisely what the user specified,
//   these fields shouldn't be modified nor used directly
//   after the supply defaults step.
//
// gd._fullData, gd._fullLayout:
//   are complete descriptions of how to draw the plot,
//   use these fields in all required computations.
//
// gd._fullLayout._modules
//   is a list of all the trace modules required to draw the plot.
//
// gd._fullLayout._basePlotModules
//   is a list of all the plot modules required to draw the plot.
//
// gd._fullLayout._transformModules
//   is a list of all the transform modules invoked.
//
plots.supplyDefaults = function(gd) {
    var oldFullLayout = gd._fullLayout || {},
        newFullLayout = gd._fullLayout = {},
        newLayout = gd.layout || {};

    var oldFullData = gd._fullData || [],
        newFullData = gd._fullData = [],
        newData = gd.data || [];

    var i;

    // Create all the storage space for frames, but only if doesn't already exist
    if(!gd._transitionData) plots.createTransitionData(gd);

    // first fill in what we can of layout without looking at data
    // because fullData needs a few things from layout

    if(oldFullLayout._initialAutoSizeIsDone) {

        // coerce the updated layout while preserving width and height
        var oldWidth = oldFullLayout.width,
            oldHeight = oldFullLayout.height;

        plots.supplyLayoutGlobalDefaults(newLayout, newFullLayout);

        if(!newLayout.width) newFullLayout.width = oldWidth;
        if(!newLayout.height) newFullLayout.height = oldHeight;
    }
    else {

        // coerce the updated layout and autosize if needed
        plots.supplyLayoutGlobalDefaults(newLayout, newFullLayout);

        var missingWidthOrHeight = (!newLayout.width || !newLayout.height),
            autosize = newFullLayout.autosize,
            autosizable = gd._context && gd._context.autosizable,
            initialAutoSize = missingWidthOrHeight && (autosize || autosizable);

        if(initialAutoSize) plots.plotAutoSize(gd, newLayout, newFullLayout);
        else if(missingWidthOrHeight) plots.sanitizeMargins(gd);

        // for backwards-compatibility with Plotly v1.x.x
        if(!autosize && missingWidthOrHeight) {
            newLayout.width = newFullLayout.width;
            newLayout.height = newFullLayout.height;
        }
    }

    newFullLayout._initialAutoSizeIsDone = true;

    // keep track of how many traces are inputted
    newFullLayout._dataLength = newData.length;

    // then do the data
    newFullLayout._globalTransforms = (gd._context || {}).globalTransforms;
    plots.supplyDataDefaults(newData, newFullData, newLayout, newFullLayout);

    // attach helper method to check whether a plot type is present on graph
    newFullLayout._has = plots._hasPlotType.bind(newFullLayout);

    // special cases that introduce interactions between traces
    var _modules = newFullLayout._modules;
    for(i = 0; i < _modules.length; i++) {
        var _module = _modules[i];
        if(_module.cleanData) _module.cleanData(newFullData);
    }

    if(oldFullData.length === newData.length) {
        for(i = 0; i < newFullData.length; i++) {
            relinkPrivateKeys(newFullData[i], oldFullData[i]);
        }
    }

    // finally, fill in the pieces of layout that may need to look at data
    plots.supplyLayoutModuleDefaults(newLayout, newFullLayout, newFullData, gd._transitionData);

    // TODO remove in v2.0.0
    // add has-plot-type refs to fullLayout for backward compatibility
    newFullLayout._hasCartesian = newFullLayout._has('cartesian');
    newFullLayout._hasGeo = newFullLayout._has('geo');
    newFullLayout._hasGL3D = newFullLayout._has('gl3d');
    newFullLayout._hasGL2D = newFullLayout._has('gl2d');
    newFullLayout._hasTernary = newFullLayout._has('ternary');
    newFullLayout._hasPie = newFullLayout._has('pie');

    // clean subplots and other artifacts from previous plot calls
    plots.cleanPlot(newFullData, newFullLayout, oldFullData, oldFullLayout);

    // relink / initialize subplot axis objects
    plots.linkSubplots(newFullData, newFullLayout, oldFullData, oldFullLayout);

    // relink functions and _ attributes to promote consistency between plots
    relinkPrivateKeys(newFullLayout, oldFullLayout);

    // TODO may return a promise
    plots.doAutoMargin(gd);

    // set scale after auto margin routine
    var axList = Plotly.Axes.list(gd);
    for(i = 0; i < axList.length; i++) {
        var ax = axList[i];
        ax.setScale();
    }

    // update object references in calcdata
    if((gd.calcdata || []).length === newFullData.length) {
        for(i = 0; i < newFullData.length; i++) {
            var newTrace = newFullData[i];
            var cd0 = gd.calcdata[i][0];
            if(cd0 && cd0.trace) {
                if(cd0.trace._hasCalcTransform) {
                    remapTransformedArrays(cd0, newTrace);
                } else {
                    cd0.trace = newTrace;
                }
            }
        }
    }
};

function remapTransformedArrays(cd0, newTrace) {
    var oldTrace = cd0.trace;
    var arrayAttrs = oldTrace._arrayAttrs;
    var transformedArrayHash = {};
    var i, astr;

    for(i = 0; i < arrayAttrs.length; i++) {
        astr = arrayAttrs[i];
        transformedArrayHash[astr] = Lib.nestedProperty(oldTrace, astr).get().slice();
    }

    cd0.trace = newTrace;

    for(i = 0; i < arrayAttrs.length; i++) {
        astr = arrayAttrs[i];
        Lib.nestedProperty(cd0.trace, astr).set(transformedArrayHash[astr]);
    }
}

// Create storage for all of the data related to frames and transitions:
plots.createTransitionData = function(gd) {
    // Set up the default keyframe if it doesn't exist:
    if(!gd._transitionData) {
        gd._transitionData = {};
    }

    if(!gd._transitionData._frames) {
        gd._transitionData._frames = [];
    }

    if(!gd._transitionData._frameHash) {
        gd._transitionData._frameHash = {};
    }

    if(!gd._transitionData._counter) {
        gd._transitionData._counter = 0;
    }

    if(!gd._transitionData._interruptCallbacks) {
        gd._transitionData._interruptCallbacks = [];
    }
};

// helper function to be bound to fullLayout to check
// whether a certain plot type is present on plot
plots._hasPlotType = function(category) {
    var basePlotModules = this._basePlotModules || [];

    for(var i = 0; i < basePlotModules.length; i++) {
        var _module = basePlotModules[i];

        if(_module.name === category) return true;
    }

    return false;
};

plots.cleanPlot = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var i, j;

    var basePlotModules = oldFullLayout._basePlotModules || [];
    for(i = 0; i < basePlotModules.length; i++) {
        var _module = basePlotModules[i];

        if(_module.clean) {
            _module.clean(newFullData, newFullLayout, oldFullData, oldFullLayout);
        }
    }

    var hasPaper = !!oldFullLayout._paper;
    var hasInfoLayer = !!oldFullLayout._infolayer;

    oldLoop:
    for(i = 0; i < oldFullData.length; i++) {
        var oldTrace = oldFullData[i],
            oldUid = oldTrace.uid;

        for(j = 0; j < newFullData.length; j++) {
            var newTrace = newFullData[j];

            if(oldUid === newTrace.uid) continue oldLoop;
        }

        var query = (
            '.hm' + oldUid +
            ',.contour' + oldUid +
            ',.carpet' + oldUid +
            ',#clip' + oldUid +
            ',.trace' + oldUid
        );

        // clean old heatmap, contour traces and clip paths
        // that rely on uid identifiers
        if(hasPaper) {
            oldFullLayout._paper.selectAll(query).remove();
        }

        // clean old colorbars and range slider plot
        if(hasInfoLayer) {
            oldFullLayout._infolayer.selectAll('.cb' + oldUid).remove();

            oldFullLayout._infolayer.selectAll('g.rangeslider-container')
                .selectAll(query).remove();
        }
    }

    if(oldFullLayout._zoomlayer) {
        oldFullLayout._zoomlayer.selectAll('.select-outline').remove();
    }
};

plots.linkSubplots = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldSubplots = oldFullLayout._plots || {},
        newSubplots = newFullLayout._plots = {};

    var mockGd = {
        _fullData: newFullData,
        _fullLayout: newFullLayout
    };

    var ids = Plotly.Axes.getSubplots(mockGd);

    var i;

    for(i = 0; i < ids.length; i++) {
        var id = ids[i];
        var oldSubplot = oldSubplots[id];
        var xaxis = Plotly.Axes.getFromId(mockGd, id, 'x');
        var yaxis = Plotly.Axes.getFromId(mockGd, id, 'y');
        var plotinfo;

        if(oldSubplot) {
            plotinfo = newSubplots[id] = oldSubplot;

            if(plotinfo._scene2d) {
                plotinfo._scene2d.updateRefs(newFullLayout);
            }

            if(plotinfo.xaxis.layer !== xaxis.layer) {
                plotinfo.xlines.attr('d', null);
                plotinfo.xaxislayer.selectAll('*').remove();
            }

            if(plotinfo.yaxis.layer !== yaxis.layer) {
                plotinfo.ylines.attr('d', null);
                plotinfo.yaxislayer.selectAll('*').remove();
            }
        } else {
            plotinfo = newSubplots[id] = {};
            plotinfo.id = id;
        }

        plotinfo.xaxis = xaxis;
        plotinfo.yaxis = yaxis;

        // By default, we clip at the subplot level,
        // but if one trace on a given subplot has *cliponaxis* set to false,
        // we need to clip at the trace module layer level;
        // find this out here, once of for all.
        plotinfo._hasClipOnAxisFalse = false;

        for(var j = 0; j < newFullData.length; j++) {
            var trace = newFullData[j];

            if(
                trace.xaxis === plotinfo.xaxis._id &&
                trace.yaxis === plotinfo.yaxis._id &&
                trace.cliponaxis === false
            ) {
                plotinfo._hasClipOnAxisFalse = true;
                break;
            }
        }
    }

    // while we're at it, link overlaying axes to their main axes and
    // anchored axes to the axes they're anchored to
    var axList = Plotly.Axes.list(mockGd, null, true);
    for(i = 0; i < axList.length; i++) {
        var ax = axList[i];
        var mainAx = null;

        if(ax.overlaying) {
            mainAx = Plotly.Axes.getFromId(mockGd, ax.overlaying);

            // you cannot overlay an axis that's already overlaying another
            if(mainAx && mainAx.overlaying) {
                ax.overlaying = false;
                mainAx = null;
            }
        }
        ax._mainAxis = mainAx || ax;

        /*
         * For now force overlays to overlay completely... so they
         * can drag together correctly and share backgrounds.
         * Later perhaps we make separate axis domain and
         * tick/line domain or something, so they can still share
         * the (possibly larger) dragger and background but don't
         * have to both be drawn over that whole domain
         */
        if(mainAx) ax.domain = mainAx.domain.slice();

        ax._anchorAxis = ax.anchor === 'free' ?
            null :
            Plotly.Axes.getFromId(mockGd, ax.anchor);
    }
};

// This function clears any trace attributes with valType: color and
// no set dflt filed in the plot schema. This is needed because groupby (which
// is the only transform for which this currently applies) supplies parent
// trace defaults, then expanded trace defaults. The result is that `null`
// colors are default-supplied and inherited as a color instead of a null.
// The result is that expanded trace default colors have no effect, with
// the final result that groups are indistinguishable. This function clears
// those colors so that individual groupby groups get unique colors.
plots.clearExpandedTraceDefaultColors = function(trace) {
    var colorAttrs, path, i;

    // This uses weird closure state in order to satisfy the linter rule
    // that we can't create functions in a loop.
    function locateColorAttrs(attr, attrName, attrs, level) {
        path[level] = attrName;
        path.length = level + 1;
        if(attr.valType === 'color' && attr.dflt === undefined) {
            colorAttrs.push(path.join('.'));
        }
    }

    path = [];

    // Get the cached colorAttrs:
    colorAttrs = trace._module._colorAttrs;

    // Or else compute and cache the colorAttrs on the module:
    if(!colorAttrs) {
        trace._module._colorAttrs = colorAttrs = [];
        PlotSchema.crawl(
            trace._module.attributes,
            locateColorAttrs
        );
    }

    for(i = 0; i < colorAttrs.length; i++) {
        var origprop = Lib.nestedProperty(trace, '_input.' + colorAttrs[i]);

        if(!origprop.get()) {
            Lib.nestedProperty(trace, colorAttrs[i]).set(null);
        }
    }
};


plots.supplyDataDefaults = function(dataIn, dataOut, layout, fullLayout) {
    var i, fullTrace, trace;
    var modules = fullLayout._modules = [],
        basePlotModules = fullLayout._basePlotModules = [],
        cnt = 0;

    fullLayout._transformModules = [];

    function pushModule(fullTrace) {
        dataOut.push(fullTrace);

        var _module = fullTrace._module;
        if(!_module) return;

        Lib.pushUnique(modules, _module);
        Lib.pushUnique(basePlotModules, fullTrace._module.basePlotModule);

        cnt++;
    }

    var carpetIndex = {};
    var carpetDependents = [];

    for(i = 0; i < dataIn.length; i++) {
        trace = dataIn[i];
        fullTrace = plots.supplyTraceDefaults(trace, cnt, fullLayout, i);

        fullTrace.index = i;
        fullTrace._input = trace;
        fullTrace._expandedIndex = cnt;

        if(fullTrace.transforms && fullTrace.transforms.length) {
            var expandedTraces = applyTransforms(fullTrace, dataOut, layout, fullLayout);

            for(var j = 0; j < expandedTraces.length; j++) {
                var expandedTrace = expandedTraces[j];
                var fullExpandedTrace = plots.supplyTraceDefaults(expandedTrace, cnt, fullLayout, i);

                // relink private (i.e. underscore) keys expanded trace to full expanded trace so
                // that transform supply-default methods can set _ keys for future use.
                relinkPrivateKeys(fullExpandedTrace, expandedTrace);

                // mutate uid here using parent uid and expanded index
                // to promote consistency between update calls
                expandedTrace.uid = fullExpandedTrace.uid = fullTrace.uid + j;

                // add info about parent data trace
                fullExpandedTrace.index = i;
                fullExpandedTrace._input = trace;
                fullExpandedTrace._fullInput = fullTrace;

                // add info about the expanded data
                fullExpandedTrace._expandedIndex = cnt;
                fullExpandedTrace._expandedInput = expandedTrace;

                pushModule(fullExpandedTrace);
            }
        }
        else {

            // add identify refs for consistency with transformed traces
            fullTrace._fullInput = fullTrace;
            fullTrace._expandedInput = fullTrace;

            pushModule(fullTrace);
        }

        if(Registry.traceIs(fullTrace, 'carpetAxis')) {
            carpetIndex[fullTrace.carpet] = fullTrace;
        }

        if(Registry.traceIs(fullTrace, 'carpetDependent')) {
            carpetDependents.push(i);
        }
    }

    for(i = 0; i < carpetDependents.length; i++) {
        fullTrace = dataOut[carpetDependents[i]];

        if(!fullTrace.visible) continue;

        var carpetAxis = carpetIndex[fullTrace.carpet];
        fullTrace._carpet = carpetAxis;

        if(!carpetAxis || !carpetAxis.visible) {
            fullTrace.visible = false;
            continue;
        }

        fullTrace.xaxis = carpetAxis.xaxis;
        fullTrace.yaxis = carpetAxis.yaxis;
    }
};

plots.supplyAnimationDefaults = function(opts) {
    opts = opts || {};
    var i;
    var optsOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts || {}, optsOut, animationAttrs, attr, dflt);
    }

    coerce('mode');
    coerce('direction');
    coerce('fromcurrent');

    if(Array.isArray(opts.frame)) {
        optsOut.frame = [];
        for(i = 0; i < opts.frame.length; i++) {
            optsOut.frame[i] = plots.supplyAnimationFrameDefaults(opts.frame[i] || {});
        }
    } else {
        optsOut.frame = plots.supplyAnimationFrameDefaults(opts.frame || {});
    }

    if(Array.isArray(opts.transition)) {
        optsOut.transition = [];
        for(i = 0; i < opts.transition.length; i++) {
            optsOut.transition[i] = plots.supplyAnimationTransitionDefaults(opts.transition[i] || {});
        }
    } else {
        optsOut.transition = plots.supplyAnimationTransitionDefaults(opts.transition || {});
    }

    return optsOut;
};

plots.supplyAnimationFrameDefaults = function(opts) {
    var optsOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts || {}, optsOut, animationAttrs.frame, attr, dflt);
    }

    coerce('duration');
    coerce('redraw');

    return optsOut;
};

plots.supplyAnimationTransitionDefaults = function(opts) {
    var optsOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts || {}, optsOut, animationAttrs.transition, attr, dflt);
    }

    coerce('duration');
    coerce('easing');

    return optsOut;
};

plots.supplyFrameDefaults = function(frameIn) {
    var frameOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(frameIn, frameOut, frameAttrs, attr, dflt);
    }

    coerce('group');
    coerce('name');
    coerce('traces');
    coerce('baseframe');
    coerce('data');
    coerce('layout');

    return frameOut;
};

plots.supplyTraceDefaults = function(traceIn, traceOutIndex, layout, traceInIndex) {
    var traceOut = {},
        defaultColor = Color.defaults[traceOutIndex % Color.defaults.length];

    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, plots.attributes, attr, dflt);
    }

    function coerceSubplotAttr(subplotType, subplotAttr) {
        if(!plots.traceIs(traceOut, subplotType)) return;

        return Lib.coerce(traceIn, traceOut,
            plots.subplotsRegistry[subplotType].attributes, subplotAttr);
    }

    var visible = coerce('visible');

    coerce('type');
    coerce('uid');
    coerce('name', 'trace ' + traceInIndex);

    // coerce subplot attributes of all registered subplot types
    var subplotTypes = Object.keys(subplotsRegistry);
    for(var i = 0; i < subplotTypes.length; i++) {
        var subplotType = subplotTypes[i];

        // done below (only when visible is true)
        // TODO unified this pattern
        if(['cartesian', 'gl2d'].indexOf(subplotType) !== -1) continue;

        var attr = subplotsRegistry[subplotType].attr;

        if(attr) coerceSubplotAttr(subplotType, attr);
    }

    if(visible) {
        coerce('customdata');
        coerce('ids');

        var _module = plots.getModule(traceOut);
        traceOut._module = _module;

        if(plots.traceIs(traceOut, 'showLegend')) {
            coerce('showlegend');
            coerce('legendgroup');
        }

        Registry.getComponentMethod(
            'fx',
            'supplyDefaults'
        )(traceIn, traceOut, defaultColor, layout);

        // TODO add per-base-plot-module trace defaults step

        if(_module) {
            _module.supplyDefaults(traceIn, traceOut, defaultColor, layout);
            Lib.coerceHoverinfo(traceIn, traceOut, layout);
        }

        if(!plots.traceIs(traceOut, 'noOpacity')) coerce('opacity');

        coerceSubplotAttr('cartesian', 'xaxis');
        coerceSubplotAttr('cartesian', 'yaxis');

        coerceSubplotAttr('gl2d', 'xaxis');
        coerceSubplotAttr('gl2d', 'yaxis');

        if(plots.traceIs(traceOut, 'notLegendIsolatable')) {
            // This clears out the legendonly state for traces like carpet that
            // cannot be isolated in the legend
            traceOut.visible = !!traceOut.visible;
        }

        plots.supplyTransformDefaults(traceIn, traceOut, layout);
    }

    return traceOut;
};

plots.supplyTransformDefaults = function(traceIn, traceOut, layout) {
    var globalTransforms = layout._globalTransforms || [];
    var transformModules = layout._transformModules || [];

    if(!Array.isArray(traceIn.transforms) && globalTransforms.length === 0) return;

    var containerIn = traceIn.transforms || [],
        transformList = globalTransforms.concat(containerIn),
        containerOut = traceOut.transforms = [];

    for(var i = 0; i < transformList.length; i++) {
        var transformIn = transformList[i],
            type = transformIn.type,
            _module = transformsRegistry[type],
            transformOut;

        /*
         * Supply defaults may run twice. First pass runs all supply defaults steps
         * and adds the _module to any output transforms.
         * If transforms exist another pass is run so that any generated traces also
         * go through supply defaults. This has the effect of rerunning
         * supplyTransformDefaults. If the transform does not have a `transform`
         * function it could not have generated any new traces and the second stage
         * is unnecessary. We detect this case with the following variables.
         */
        var isFirstStage = !(transformIn._module && transformIn._module === _module),
            doLaterStages = _module && typeof _module.transform === 'function';

        if(!_module) Lib.warn('Unrecognized transform type ' + type + '.');

        if(_module && _module.supplyDefaults && (isFirstStage || doLaterStages)) {
            transformOut = _module.supplyDefaults(transformIn, traceOut, layout, traceIn);
            transformOut.type = type;
            transformOut._module = _module;

            Lib.pushUnique(transformModules, _module);
        }
        else {
            transformOut = Lib.extendFlat({}, transformIn);
        }

        containerOut.push(transformOut);
    }
};

function applyTransforms(fullTrace, fullData, layout, fullLayout) {
    var container = fullTrace.transforms,
        dataOut = [fullTrace];

    for(var i = 0; i < container.length; i++) {
        var transform = container[i],
            _module = transformsRegistry[transform.type];

        if(_module && _module.transform) {
            dataOut = _module.transform(dataOut, {
                transform: transform,
                fullTrace: fullTrace,
                fullData: fullData,
                layout: layout,
                fullLayout: fullLayout,
                transformIndex: i
            });
        }
    }

    return dataOut;
}

plots.supplyLayoutGlobalDefaults = function(layoutIn, layoutOut) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, plots.layoutAttributes, attr, dflt);
    }

    var globalFont = Lib.coerceFont(coerce, 'font');

    coerce('title');

    Lib.coerceFont(coerce, 'titlefont', {
        family: globalFont.family,
        size: Math.round(globalFont.size * 1.4),
        color: globalFont.color
    });

    // Make sure that autosize is defaulted to *true*
    // on layouts with no set width and height for backward compatibly,
    // in particular https://plot.ly/javascript/responsive-fluid-layout/
    //
    // Before https://github.com/plotly/plotly.js/pull/635 ,
    // layouts with no set width and height were set temporary set to 'initial'
    // to pass through the autosize routine
    //
    // This behavior is subject to change in v2.
    coerce('autosize', !(layoutIn.width && layoutIn.height));

    coerce('width');
    coerce('height');
    coerce('margin.l');
    coerce('margin.r');
    coerce('margin.t');
    coerce('margin.b');
    coerce('margin.pad');
    coerce('margin.autoexpand');

    if(layoutIn.width && layoutIn.height) plots.sanitizeMargins(layoutOut);

    coerce('paper_bgcolor');

    coerce('separators');
    coerce('hidesources');
    coerce('smith');

    Registry.getComponentMethod(
        'calendars',
        'handleDefaults'
    )(layoutIn, layoutOut, 'calendar');

    Registry.getComponentMethod(
        'fx',
        'supplyLayoutGlobalDefaults'
    )(layoutIn, layoutOut, coerce);
};

plots.plotAutoSize = function plotAutoSize(gd, layout, fullLayout) {
    var context = gd._context || {},
        frameMargins = context.frameMargins,
        newWidth,
        newHeight;

    var isPlotDiv = Lib.isPlotDiv(gd);

    if(isPlotDiv) gd.emit('plotly_autosize');

    // embedded in an iframe - just take the full iframe size
    // if we get to this point, with no aspect ratio restrictions
    if(context.fillFrame) {
        newWidth = window.innerWidth;
        newHeight = window.innerHeight;

        // somehow we get a few extra px height sometimes...
        // just hide it
        document.body.style.overflow = 'hidden';
    }
    else if(isNumeric(frameMargins) && frameMargins > 0) {
        var reservedMargins = calculateReservedMargins(gd._boundingBoxMargins),
            reservedWidth = reservedMargins.left + reservedMargins.right,
            reservedHeight = reservedMargins.bottom + reservedMargins.top,
            factor = 1 - 2 * frameMargins;

        var gdBB = fullLayout._container && fullLayout._container.node ?
            fullLayout._container.node().getBoundingClientRect() : {
                width: fullLayout.width,
                height: fullLayout.height
            };

        newWidth = Math.round(factor * (gdBB.width - reservedWidth));
        newHeight = Math.round(factor * (gdBB.height - reservedHeight));
    }
    else {
        // plotly.js - let the developers do what they want, either
        // provide height and width for the container div,
        // specify size in layout, or take the defaults,
        // but don't enforce any ratio restrictions
        var computedStyle = isPlotDiv ? window.getComputedStyle(gd) : {};

        newWidth = parseFloat(computedStyle.width) || fullLayout.width;
        newHeight = parseFloat(computedStyle.height) || fullLayout.height;
    }

    var minWidth = plots.layoutAttributes.width.min,
        minHeight = plots.layoutAttributes.height.min;
    if(newWidth < minWidth) newWidth = minWidth;
    if(newHeight < minHeight) newHeight = minHeight;

    var widthHasChanged = !layout.width &&
            (Math.abs(fullLayout.width - newWidth) > 1),
        heightHasChanged = !layout.height &&
            (Math.abs(fullLayout.height - newHeight) > 1);

    if(heightHasChanged || widthHasChanged) {
        if(widthHasChanged) fullLayout.width = newWidth;
        if(heightHasChanged) fullLayout.height = newHeight;
    }

    // cache initial autosize value, used in relayout when
    // width or height values are set to null
    if(!gd._initialAutoSize) {
        gd._initialAutoSize = { width: newWidth, height: newHeight };
    }

    plots.sanitizeMargins(fullLayout);
};

/**
 * Reduce all reserved margin objects to a single required margin reservation.
 *
 * @param {Object} margins
 * @returns {{left: number, right: number, bottom: number, top: number}}
 */
function calculateReservedMargins(margins) {
    var resultingMargin = {left: 0, right: 0, bottom: 0, top: 0},
        marginName;

    if(margins) {
        for(marginName in margins) {
            if(margins.hasOwnProperty(marginName)) {
                resultingMargin.left += margins[marginName].left || 0;
                resultingMargin.right += margins[marginName].right || 0;
                resultingMargin.bottom += margins[marginName].bottom || 0;
                resultingMargin.top += margins[marginName].top || 0;
            }
        }
    }
    return resultingMargin;
}

plots.supplyLayoutModuleDefaults = function(layoutIn, layoutOut, fullData, transitionData) {
    var i, _module;

    // can't be be part of basePlotModules loop
    // in order to handle the orphan axes case
    Plotly.Axes.supplyLayoutDefaults(layoutIn, layoutOut, fullData);

    // base plot module layout defaults
    var basePlotModules = layoutOut._basePlotModules;
    for(i = 0; i < basePlotModules.length; i++) {
        _module = basePlotModules[i];

        // done above already
        if(_module.name === 'cartesian') continue;

        // e.g. gl2d does not have a layout-defaults step
        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData);
        }
    }

    // trace module layout defaults
    var modules = layoutOut._modules;
    for(i = 0; i < modules.length; i++) {
        _module = modules[i];

        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData);
        }
    }

    // transform module layout defaults
    var transformModules = layoutOut._transformModules;
    for(i = 0; i < transformModules.length; i++) {
        _module = transformModules[i];

        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData, transitionData);
        }
    }

    var components = Object.keys(Registry.componentsRegistry);
    for(i = 0; i < components.length; i++) {
        _module = Registry.componentsRegistry[components[i]];

        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData);
        }
    }
};

// Remove all plotly attributes from a div so it can be replotted fresh
// TODO: these really need to be encapsulated into a much smaller set...
plots.purge = function(gd) {

    // note: we DO NOT remove _context because it doesn't change when we insert
    // a new plot, and may have been set outside of our scope.

    var fullLayout = gd._fullLayout || {};
    if(fullLayout._glcontainer !== undefined) fullLayout._glcontainer.remove();
    if(fullLayout._geocontainer !== undefined) fullLayout._geocontainer.remove();

    // remove modebar
    if(fullLayout._modeBar) fullLayout._modeBar.destroy();

    if(gd._transitionData) {
        // Ensure any dangling callbacks are simply dropped if the plot is purged.
        // This is more or less only actually important for testing.
        if(gd._transitionData._interruptCallbacks) {
            gd._transitionData._interruptCallbacks.length = 0;
        }

        if(gd._transitionData._animationRaf) {
            window.cancelAnimationFrame(gd._transitionData._animationRaf);
        }
    }

    // data and layout
    delete gd.data;
    delete gd.layout;
    delete gd._fullData;
    delete gd._fullLayout;
    delete gd.calcdata;
    delete gd.framework;
    delete gd.empty;

    delete gd.fid;

    delete gd.undoqueue; // action queue
    delete gd.undonum;
    delete gd.autoplay; // are we doing an action that doesn't go in undo queue?
    delete gd.changed;

    // these get recreated on Plotly.plot anyway, but just to be safe
    // (and to have a record of them...)
    delete gd._promises;
    delete gd._redrawTimer;
    delete gd.firstscatter;
    delete gd._hmlumcount;
    delete gd._hmpixcount;
    delete gd.numboxes;
    delete gd._transitionData;
    delete gd._transitioning;
    delete gd._initialAutoSize;
    delete gd._transitioningWithDuration;

    // created during certain events, that *should* clean them up
    // themselves, but may not if there was an error
    delete gd._dragging;
    delete gd._dragged;
    delete gd._hoverdata;
    delete gd._snapshotInProgress;
    delete gd._editing;
    delete gd._replotPending;
    delete gd._mouseDownTime;
    delete gd._legendMouseDownTime;

    // remove all event listeners
    if(gd.removeAllListeners) gd.removeAllListeners();
};

plots.style = function(gd) {
    var _modules = gd._fullLayout._modules;

    for(var i = 0; i < _modules.length; i++) {
        var _module = _modules[i];

        if(_module.style) _module.style(gd);
    }
};

plots.sanitizeMargins = function(fullLayout) {
    // polar doesn't do margins...
    if(!fullLayout || !fullLayout.margin) return;

    var width = fullLayout.width,
        height = fullLayout.height,
        margin = fullLayout.margin,
        plotWidth = width - (margin.l + margin.r),
        plotHeight = height - (margin.t + margin.b),
        correction;

    // if margin.l + margin.r = 0 then plotWidth > 0
    // as width >= 10 by supplyDefaults
    // similarly for margin.t + margin.b

    if(plotWidth < 0) {
        correction = (width - 1) / (margin.l + margin.r);
        margin.l = Math.floor(correction * margin.l);
        margin.r = Math.floor(correction * margin.r);
    }

    if(plotHeight < 0) {
        correction = (height - 1) / (margin.t + margin.b);
        margin.t = Math.floor(correction * margin.t);
        margin.b = Math.floor(correction * margin.b);
    }
};

// called by components to see if we need to
// expand the margins to show them
// o is {x,l,r,y,t,b} where x and y are plot fractions,
// the rest are pixels in each direction
// or leave o out to delete this entry (like if it's hidden)
plots.autoMargin = function(gd, id, o) {
    var fullLayout = gd._fullLayout;

    if(!fullLayout._pushmargin) fullLayout._pushmargin = {};

    if(fullLayout.margin.autoexpand !== false) {
        if(!o) delete fullLayout._pushmargin[id];
        else {
            var pad = o.pad === undefined ? 12 : o.pad;

            // if the item is too big, just give it enough automargin to
            // make sure you can still grab it and bring it back
            if(o.l + o.r > fullLayout.width * 0.5) o.l = o.r = 0;
            if(o.b + o.t > fullLayout.height * 0.5) o.b = o.t = 0;

            fullLayout._pushmargin[id] = {
                l: {val: o.x, size: o.l + pad},
                r: {val: o.x, size: o.r + pad},
                b: {val: o.y, size: o.b + pad},
                t: {val: o.y, size: o.t + pad}
            };
        }

        if(!fullLayout._replotting) plots.doAutoMargin(gd);
    }
};

plots.doAutoMargin = function(gd) {
    var fullLayout = gd._fullLayout;
    if(!fullLayout._size) fullLayout._size = {};
    if(!fullLayout._pushmargin) fullLayout._pushmargin = {};

    var gs = fullLayout._size,
        oldmargins = JSON.stringify(gs);

    // adjust margins for outside components
    // fullLayout.margin is the requested margin,
    // fullLayout._size has margins and plotsize after adjustment
    var ml = Math.max(fullLayout.margin.l || 0, 0),
        mr = Math.max(fullLayout.margin.r || 0, 0),
        mt = Math.max(fullLayout.margin.t || 0, 0),
        mb = Math.max(fullLayout.margin.b || 0, 0),
        pm = fullLayout._pushmargin;

    if(fullLayout.margin.autoexpand !== false) {

        // fill in the requested margins
        pm.base = {
            l: {val: 0, size: ml},
            r: {val: 1, size: mr},
            t: {val: 1, size: mt},
            b: {val: 0, size: mb}
        };

        // now cycle through all the combinations of l and r
        // (and t and b) to find the required margins

        var pmKeys = Object.keys(pm);

        for(var i = 0; i < pmKeys.length; i++) {
            var k1 = pmKeys[i];

            var pushleft = pm[k1].l || {},
                pushbottom = pm[k1].b || {},
                fl = pushleft.val,
                pl = pushleft.size,
                fb = pushbottom.val,
                pb = pushbottom.size;

            for(var j = 0; j < pmKeys.length; j++) {
                var k2 = pmKeys[j];

                if(isNumeric(pl) && pm[k2].r) {
                    var fr = pm[k2].r.val,
                        pr = pm[k2].r.size;

                    if(fr > fl) {
                        var newl = (pl * fr +
                                (pr - fullLayout.width) * fl) / (fr - fl),
                            newr = (pr * (1 - fl) +
                                (pl - fullLayout.width) * (1 - fr)) / (fr - fl);
                        if(newl >= 0 && newr >= 0 && newl + newr > ml + mr) {
                            ml = newl;
                            mr = newr;
                        }
                    }
                }

                if(isNumeric(pb) && pm[k2].t) {
                    var ft = pm[k2].t.val,
                        pt = pm[k2].t.size;

                    if(ft > fb) {
                        var newb = (pb * ft +
                                (pt - fullLayout.height) * fb) / (ft - fb),
                            newt = (pt * (1 - fb) +
                                (pb - fullLayout.height) * (1 - ft)) / (ft - fb);
                        if(newb >= 0 && newt >= 0 && newb + newt > mb + mt) {
                            mb = newb;
                            mt = newt;
                        }
                    }
                }
            }
        }
    }

    gs.l = Math.round(ml);
    gs.r = Math.round(mr);
    gs.t = Math.round(mt);
    gs.b = Math.round(mb);
    gs.p = Math.round(fullLayout.margin.pad);
    gs.w = Math.round(fullLayout.width) - gs.l - gs.r;
    gs.h = Math.round(fullLayout.height) - gs.t - gs.b;

    // if things changed and we're not already redrawing, trigger a redraw
    if(!fullLayout._replotting && oldmargins !== '{}' &&
            oldmargins !== JSON.stringify(fullLayout._size)) {
        return Plotly.plot(gd);
    }
};

/**
 * JSONify the graph data and layout
 *
 * This function needs to recurse because some src can be inside
 * sub-objects.
 *
 * It also strips out functions and private (starts with _) elements.
 * Therefore, we can add temporary things to data and layout that don't
 * get saved.
 *
 * @param gd The graphDiv
 * @param {Boolean} dataonly If true, don't return layout.
 * @param {'keepref'|'keepdata'|'keepall'} [mode='keepref'] Filter what's kept
 *      keepref: remove data for which there's a src present
 *          eg if there's xsrc present (and xsrc is well-formed,
 *          ie has : and some chars before it), strip out x
 *      keepdata: remove all src tags, don't remove the data itself
 *      keepall: keep data and src
 * @param {String} output If you specify 'object', the result will not be stringified
 * @param {Boolean} useDefaults If truthy, use _fullLayout and _fullData
 * @returns {Object|String}
 */
plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
    // if the defaults aren't supplied yet, we need to do that...
    if((useDefaults && dataonly && !gd._fullData) ||
            (useDefaults && !dataonly && !gd._fullLayout)) {
        plots.supplyDefaults(gd);
    }

    var data = (useDefaults) ? gd._fullData : gd.data,
        layout = (useDefaults) ? gd._fullLayout : gd.layout,
        frames = (gd._transitionData || {})._frames;

    function stripObj(d) {
        if(typeof d === 'function') {
            return null;
        }
        if(Lib.isPlainObject(d)) {
            var o = {}, v, src;
            for(v in d) {
                // remove private elements and functions
                // _ is for private, [ is a mistake ie [object Object]
                if(typeof d[v] === 'function' ||
                        ['_', '['].indexOf(v.charAt(0)) !== -1) {
                    continue;
                }

                // look for src/data matches and remove the appropriate one
                if(mode === 'keepdata') {
                    // keepdata: remove all ...src tags
                    if(v.substr(v.length - 3) === 'src') {
                        continue;
                    }
                }
                else if(mode === 'keepstream') {
                    // keep sourced data if it's being streamed.
                    // similar to keepref, but if the 'stream' object exists
                    // in a trace, we will keep the data array.
                    src = d[v + 'src'];
                    if(typeof src === 'string' && src.indexOf(':') > 0) {
                        if(!Lib.isPlainObject(d.stream)) {
                            continue;
                        }
                    }
                }
                else if(mode !== 'keepall') {
                    // keepref: remove sourced data but only
                    // if the source tag is well-formed
                    src = d[v + 'src'];
                    if(typeof src === 'string' && src.indexOf(':') > 0) {
                        continue;
                    }
                }

                // OK, we're including this... recurse into it
                o[v] = stripObj(d[v]);
            }
            return o;
        }

        if(Array.isArray(d)) {
            return d.map(stripObj);
        }

        // convert native dates to date strings...
        // mostly for external users exporting to plotly
        if(Lib.isJSDate(d)) return Lib.ms2DateTimeLocal(+d);

        return d;
    }

    var obj = {
        data: (data || []).map(function(v) {
            var d = stripObj(v);
            // fit has some little arrays in it that don't contain data,
            // just fit params and meta
            if(dataonly) { delete d.fit; }
            return d;
        })
    };
    if(!dataonly) { obj.layout = stripObj(layout); }

    if(gd.framework && gd.framework.isPolar) obj = gd.framework.getConfig();

    if(frames) obj.frames = stripObj(frames);

    return (output === 'object') ? obj : JSON.stringify(obj);
};

/**
 * Modify a keyframe using a list of operations:
 *
 * @param {array of objects} operations
 *      Sequence of operations to be performed on the keyframes
 */
plots.modifyFrames = function(gd, operations) {
    var i, op, frame;
    var _frames = gd._transitionData._frames;
    var _hash = gd._transitionData._frameHash;

    for(i = 0; i < operations.length; i++) {
        op = operations[i];

        switch(op.type) {
            // No reason this couldn't exist, but is currently unused/untested:
            /* case 'rename':
                frame = _frames[op.index];
                delete _hash[frame.name];
                _hash[op.name] = frame;
                frame.name = op.name;
                break;*/
            case 'replace':
                frame = op.value;
                var oldName = (_frames[op.index] || {}).name;
                var newName = frame.name;
                _frames[op.index] = _hash[newName] = frame;

                if(newName !== oldName) {
                    // If name has changed in addition to replacement, then update
                    // the lookup table:
                    delete _hash[oldName];
                    _hash[newName] = frame;
                }

                break;
            case 'insert':
                frame = op.value;
                _hash[frame.name] = frame;
                _frames.splice(op.index, 0, frame);
                break;
            case 'delete':
                frame = _frames[op.index];
                delete _hash[frame.name];
                _frames.splice(op.index, 1);
                break;
        }
    }

    return Promise.resolve();
};

/*
 * Compute a keyframe. Merge a keyframe into its base frame(s) and
 * expand properties.
 *
 * @param {object} frameLookup
 *      An object containing frames keyed by name (i.e. gd._transitionData._frameHash)
 * @param {string} frame
 *      The name of the keyframe to be computed
 *
 * Returns: a new object with the merged content
 */
plots.computeFrame = function(gd, frameName) {
    var frameLookup = gd._transitionData._frameHash;
    var i, traceIndices, traceIndex, destIndex;

    // Null or undefined will fail on .toString(). We'll allow numbers since we
    // make it clear frames must be given string names, but we'll allow numbers
    // here since they're otherwise fine for looking up frames as long as they're
    // properly cast to strings. We really just want to ensure here that this
    // 1) doesn't fail, and
    // 2) doens't give an incorrect answer (which String(frameName) would)
    if(!frameName) {
        throw new Error('computeFrame must be given a string frame name');
    }

    var framePtr = frameLookup[frameName.toString()];

    // Return false if the name is invalid:
    if(!framePtr) {
        return false;
    }

    var frameStack = [framePtr];
    var frameNameStack = [framePtr.name];

    // Follow frame pointers:
    while(framePtr.baseframe && (framePtr = frameLookup[framePtr.baseframe.toString()])) {
        // Avoid infinite loops:
        if(frameNameStack.indexOf(framePtr.name) !== -1) break;

        frameStack.push(framePtr);
        frameNameStack.push(framePtr.name);
    }

    // A new object for the merged result:
    var result = {};

    // Merge, starting with the last and ending with the desired frame:
    while((framePtr = frameStack.pop())) {
        if(framePtr.layout) {
            result.layout = plots.extendLayout(result.layout, framePtr.layout);
        }

        if(framePtr.data) {
            if(!result.data) {
                result.data = [];
            }
            traceIndices = framePtr.traces;

            if(!traceIndices) {
                // If not defined, assume serial order starting at zero
                traceIndices = [];
                for(i = 0; i < framePtr.data.length; i++) {
                    traceIndices[i] = i;
                }
            }

            if(!result.traces) {
                result.traces = [];
            }

            for(i = 0; i < framePtr.data.length; i++) {
                // Loop through this frames data, find out where it should go,
                // and merge it!
                traceIndex = traceIndices[i];
                if(traceIndex === undefined || traceIndex === null) {
                    continue;
                }

                destIndex = result.traces.indexOf(traceIndex);
                if(destIndex === -1) {
                    destIndex = result.data.length;
                    result.traces[destIndex] = traceIndex;
                }

                result.data[destIndex] = plots.extendTrace(result.data[destIndex], framePtr.data[i]);
            }
        }
    }

    return result;
};

/*
 * Recompute the lookup table that maps frame name -> frame object. addFrames/
 * deleteFrames already manages this data one at a time, so the only time this
 * is necessary is if you poke around manually in `gd._transitionData._frames`
 * and create and haven't updated the lookup table.
 */
plots.recomputeFrameHash = function(gd) {
    var hash = gd._transitionData._frameHash = {};
    var frames = gd._transitionData._frames;
    for(var i = 0; i < frames.length; i++) {
        var frame = frames[i];
        if(frame && frame.name) {
            hash[frame.name] = frame;
        }
    }
};

/**
 * Extend an object, treating container arrays very differently by extracting
 * their contents and merging them separately.
 *
 * This exists so that we can extendDeepNoArrays and avoid stepping into data
 * arrays without knowledge of the plot schema, but so that we may also manually
 * recurse into known container arrays, such as transforms.
 *
 * See extendTrace and extendLayout below for usage.
 */
plots.extendObjectWithContainers = function(dest, src, containerPaths) {
    var containerProp, containerVal, i, j, srcProp, destProp, srcContainer, destContainer;
    var copy = Lib.extendDeepNoArrays({}, src || {});
    var expandedObj = Lib.expandObjectPaths(copy);
    var containerObj = {};

    // Step through and extract any container properties. Otherwise extendDeepNoArrays
    // will clobber any existing properties with an empty array and then supplyDefaults
    // will reset everything to defaults.
    if(containerPaths && containerPaths.length) {
        for(i = 0; i < containerPaths.length; i++) {
            containerProp = Lib.nestedProperty(expandedObj, containerPaths[i]);
            containerVal = containerProp.get();

            if(containerVal === undefined) {
                Lib.nestedProperty(containerObj, containerPaths[i]).set(null);
            }
            else {
                containerProp.set(null);
                Lib.nestedProperty(containerObj, containerPaths[i]).set(containerVal);
            }
        }
    }

    dest = Lib.extendDeepNoArrays(dest || {}, expandedObj);

    if(containerPaths && containerPaths.length) {
        for(i = 0; i < containerPaths.length; i++) {
            srcProp = Lib.nestedProperty(containerObj, containerPaths[i]);
            srcContainer = srcProp.get();

            if(!srcContainer) continue;

            destProp = Lib.nestedProperty(dest, containerPaths[i]);
            destContainer = destProp.get();

            if(!Array.isArray(destContainer)) {
                destContainer = [];
                destProp.set(destContainer);
            }

            for(j = 0; j < srcContainer.length; j++) {
                var srcObj = srcContainer[j];

                if(srcObj === null) destContainer[j] = null;
                else {
                    destContainer[j] = plots.extendObjectWithContainers(destContainer[j], srcObj);
                }
            }

            destProp.set(destContainer);
        }
    }

    return dest;
};

plots.dataArrayContainers = ['transforms'];
plots.layoutArrayContainers = Registry.layoutArrayContainers;

/*
 * Extend a trace definition. This method:
 *
 *  1. directly transfers any array references
 *  2. manually recurses into container arrays like transforms
 *
 * The result is the original object reference with the new contents merged in.
 */
plots.extendTrace = function(destTrace, srcTrace) {
    return plots.extendObjectWithContainers(destTrace, srcTrace, plots.dataArrayContainers);
};

/*
 * Extend a layout definition. This method:
 *
 *  1. directly transfers any array references (not critically important for
 *     layout since there aren't really data arrays)
 *  2. manually recurses into container arrays like annotations
 *
 * The result is the original object reference with the new contents merged in.
 */
plots.extendLayout = function(destLayout, srcLayout) {
    return plots.extendObjectWithContainers(destLayout, srcLayout, plots.layoutArrayContainers);
};

/**
 * Transition to a set of new data and layout properties
 *
 * @param {DOM element} gd
 *      the DOM element of the graph container div
 * @param {Object[]} data
 *      an array of data objects following the normal Plotly data definition format
 * @param {Object} layout
 *      a layout object, following normal Plotly layout format
 * @param {Number[]} traces
 *      indices of the corresponding traces specified in `data`
 * @param {Object} frameOpts
 *      options for the frame (i.e. whether to redraw post-transition)
 * @param {Object} transitionOpts
 *      options for the transition
 */
plots.transition = function(gd, data, layout, traces, frameOpts, transitionOpts) {
    var i, traceIdx;

    var dataLength = Array.isArray(data) ? data.length : 0;
    var traceIndices = traces.slice(0, dataLength);

    var transitionedTraces = [];

    function prepareTransitions() {
        var i;

        for(i = 0; i < traceIndices.length; i++) {
            var traceIdx = traceIndices[i];
            var trace = gd._fullData[traceIdx];
            var module = trace._module;

            // There's nothing to do if this module is not defined:
            if(!module) continue;

            // Don't register the trace as transitioned if it doens't know what to do.
            // If it *is* registered, it will receive a callback that it's responsible
            // for calling in order to register the transition as having completed.
            if(module.animatable) {
                transitionedTraces.push(traceIdx);
            }

            gd.data[traceIndices[i]] = plots.extendTrace(gd.data[traceIndices[i]], data[i]);
        }

        // Follow the same procedure. Clone it so we don't mangle the input, then
        // expand any object paths so we can merge deep into gd.layout:
        var layoutUpdate = Lib.expandObjectPaths(Lib.extendDeepNoArrays({}, layout));

        // Before merging though, we need to modify the incoming layout. We only
        // know how to *transition* layout ranges, so it's imperative that a new
        // range not be sent to the layout before the transition has started. So
        // we must remove the things we can transition:
        var axisAttrRe = /^[xy]axis[0-9]*$/;
        for(var attr in layoutUpdate) {
            if(!axisAttrRe.test(attr)) continue;
            delete layoutUpdate[attr].range;
        }

        plots.extendLayout(gd.layout, layoutUpdate);

        // Supply defaults after applying the incoming properties. Note that any attempt
        // to simplify this step and reduce the amount of work resulted in the reconstruction
        // of essentially the whole supplyDefaults step, so that it seems sensible to just use
        // supplyDefaults even though it's heavier than would otherwise be desired for
        // transitions:

        // first delete calcdata so supplyDefaults knows a calc step is coming
        delete gd.calcdata;

        plots.supplyDefaults(gd);

        plots.doCalcdata(gd);

        ErrorBars.calc(gd);

        return Promise.resolve();
    }

    function executeCallbacks(list) {
        var p = Promise.resolve();
        if(!list) return p;
        while(list.length) {
            p = p.then((list.shift()));
        }
        return p;
    }

    function flushCallbacks(list) {
        if(!list) return;
        while(list.length) {
            list.shift();
        }
    }

    var aborted = false;

    function executeTransitions() {

        gd.emit('plotly_transitioning', []);

        return new Promise(function(resolve) {
            // This flag is used to disabled things like autorange:
            gd._transitioning = true;

            // When instantaneous updates are coming through quickly, it's too much to simply disable
            // all interaction, so store this flag so we can disambiguate whether mouse interactions
            // should be fully disabled or not:
            if(transitionOpts.duration > 0) {
                gd._transitioningWithDuration = true;
            }


            // If another transition is triggered, this callback will be executed simply because it's
            // in the interruptCallbacks queue. If this transition completes, it will instead flush
            // that queue and forget about this callback.
            gd._transitionData._interruptCallbacks.push(function() {
                aborted = true;
            });

            if(frameOpts.redraw) {
                gd._transitionData._interruptCallbacks.push(function() {
                    return Plotly.redraw(gd);
                });
            }

            // Emit this and make sure it happens last:
            gd._transitionData._interruptCallbacks.push(function() {
                gd.emit('plotly_transitioninterrupted', []);
            });

            // Construct callbacks that are executed on transition end. This ensures the d3 transitions
            // are *complete* before anything else is done.
            var numCallbacks = 0;
            var numCompleted = 0;
            function makeCallback() {
                numCallbacks++;
                return function() {
                    numCompleted++;
                    // When all are complete, perform a redraw:
                    if(!aborted && numCompleted === numCallbacks) {
                        completeTransition(resolve);
                    }
                };
            }

            var traceTransitionOpts;
            var j;
            var basePlotModules = gd._fullLayout._basePlotModules;
            var hasAxisTransition = false;

            if(layout) {
                for(j = 0; j < basePlotModules.length; j++) {
                    if(basePlotModules[j].transitionAxes) {
                        var newLayout = Lib.expandObjectPaths(layout);
                        hasAxisTransition = basePlotModules[j].transitionAxes(gd, newLayout, transitionOpts, makeCallback) || hasAxisTransition;
                    }
                }
            }

            // Here handle the exception that we refuse to animate scales and axes at the same
            // time. In other words, if there's an axis transition, then set the data transition
            // to instantaneous.
            if(hasAxisTransition) {
                traceTransitionOpts = Lib.extendFlat({}, transitionOpts);
                traceTransitionOpts.duration = 0;
            } else {
                traceTransitionOpts = transitionOpts;
            }

            for(j = 0; j < basePlotModules.length; j++) {
                // Note that we pass a callback to *create* the callback that must be invoked on completion.
                // This is since not all traces know about transitions, so it greatly simplifies matters if
                // the trace is responsible for creating a callback, if needed, and then executing it when
                // the time is right.
                basePlotModules[j].plot(gd, transitionedTraces, traceTransitionOpts, makeCallback);
            }

            // If nothing else creates a callback, then this will trigger the completion in the next tick:
            setTimeout(makeCallback());

        });
    }

    function completeTransition(callback) {
        // This a simple workaround for tests which purge the graph before animations
        // have completed. That's not a very common case, so this is the simplest
        // fix.
        if(!gd._transitionData) return;

        flushCallbacks(gd._transitionData._interruptCallbacks);

        return Promise.resolve().then(function() {
            if(frameOpts.redraw) {
                return Plotly.redraw(gd);
            }
        }).then(function() {
            // Set transitioning false again once the redraw has occurred. This is used, for example,
            // to prevent the trailing redraw from autoranging:
            gd._transitioning = false;
            gd._transitioningWithDuration = false;

            gd.emit('plotly_transitioned', []);
        }).then(callback);
    }

    function interruptPreviousTransitions() {
        // Fail-safe against purged plot:
        if(!gd._transitionData) return;

        // If a transition is interrupted, set this to false. At the moment, the only thing that would
        // interrupt a transition is another transition, so that it will momentarily be set to true
        // again, but this determines whether autorange or dragbox work, so it's for the sake of
        // cleanliness:
        gd._transitioning = false;

        return executeCallbacks(gd._transitionData._interruptCallbacks);
    }

    for(i = 0; i < traceIndices.length; i++) {
        traceIdx = traceIndices[i];
        var contFull = gd._fullData[traceIdx];
        var module = contFull._module;

        if(!module) continue;

        if(!module.animatable) {
            var thisUpdate = {};

            for(var ai in data[i]) {
                thisUpdate[ai] = [data[i][ai]];
            }
        }
    }

    var seq = [plots.previousPromises, interruptPreviousTransitions, prepareTransitions, plots.rehover, executeTransitions];

    var transitionStarting = Lib.syncOrAsync(seq, gd);

    if(!transitionStarting || !transitionStarting.then) {
        transitionStarting = Promise.resolve();
    }

    return transitionStarting.then(function() {
        return gd;
    });
};

plots.doCalcdata = function(gd, traces) {
    var axList = Plotly.Axes.list(gd),
        fullData = gd._fullData,
        fullLayout = gd._fullLayout;

    var trace, _module, i, j;

    // XXX: Is this correct? Needs a closer look so that *some* traces can be recomputed without
    // *all* needing doCalcdata:
    var calcdata = new Array(fullData.length);
    var oldCalcdata = (gd.calcdata || []).slice(0);
    gd.calcdata = calcdata;

    // extra helper variables
    // firstscatter: fill-to-next on the first trace goes to zero
    gd.firstscatter = true;

    // how many box plots do we have (in case they're grouped)
    gd.numboxes = 0;

    // for calculating avg luminosity of heatmaps
    gd._hmpixcount = 0;
    gd._hmlumcount = 0;

    // for sharing colors across pies (and for legend)
    fullLayout._piecolormap = {};
    fullLayout._piedefaultcolorcount = 0;

    // If traces were specified and this trace was not included,
    // then transfer it over from the old calcdata:
    for(i = 0; i < fullData.length; i++) {
        if(Array.isArray(traces) && traces.indexOf(i) === -1) {
            calcdata[i] = oldCalcdata[i];
            continue;
        }
    }

    // find array attributes in trace
    for(i = 0; i < fullData.length; i++) {
        trace = fullData[i];
        trace._arrayAttrs = PlotSchema.findArrayAttributes(trace);
    }

    initCategories(axList);

    var hasCalcTransform = false;

    // transform loop
    for(i = 0; i < fullData.length; i++) {
        trace = fullData[i];

        if(trace.visible === true && trace.transforms) {
            _module = trace._module;

            // we need one round of trace module calc before
            // the calc transform to 'fill in' the categories list
            // used for example in the data-to-coordinate method
            if(_module && _module.calc) _module.calc(gd, trace);

            for(j = 0; j < trace.transforms.length; j++) {
                var transform = trace.transforms[j];

                _module = transformsRegistry[transform.type];
                if(_module && _module.calcTransform) {
                    trace._hasCalcTransform = true;
                    hasCalcTransform = true;
                    _module.calcTransform(gd, trace, transform);
                }
            }
        }
    }

    // clear stuff that should recomputed in 'regular' loop
    if(hasCalcTransform) {
        for(i = 0; i < axList.length; i++) {
            axList[i]._min = [];
            axList[i]._max = [];
            axList[i]._categories = [];
            axList[i]._categoriesMap = {};
        }
        initCategories(axList);
    }

    // 'regular' loop
    for(i = 0; i < fullData.length; i++) {
        var cd = [];

        trace = fullData[i];

        if(trace.visible === true) {
            _module = trace._module;
            if(_module && _module.calc) cd = _module.calc(gd, trace);
        }

        // Make sure there is a first point.
        //
        // This ensures there is a calcdata item for every trace,
        // even if cartesian logic doesn't handle it (for things like legends).
        if(!Array.isArray(cd) || !cd[0]) {
            cd = [{x: BADNUM, y: BADNUM}];
        }

        // add the trace-wide properties to the first point,
        // per point properties to every point
        // t is the holder for trace-wide properties
        if(!cd[0].t) cd[0].t = {};
        cd[0].trace = trace;

        calcdata[i] = cd;
    }

    Registry.getComponentMethod('fx', 'calc')(gd);
};

// initialize the category list, if there is one, so we start over
// to be filled in later by ax.d2c
function initCategories(axList) {
    for(var i = 0; i < axList.length; i++) {
        axList[i]._categories = axList[i]._initialCategories.slice();

        // Build the lookup map for initialized categories
        axList[i]._categoriesMap = {};
        for(var j = 0; j < axList[i]._categories.length; j++) {
            axList[i]._categoriesMap[axList[i]._categories[j]] = j;
        }
    }
}

plots.rehover = function(gd) {
    if(gd._fullLayout._rehover) {
        gd._fullLayout._rehover();
    }
};

plots.generalUpdatePerTraceModule = function(subplot, subplotCalcData, subplotLayout) {
    var traceHashOld = subplot.traceHash,
        traceHash = {},
        i;

    function filterVisible(calcDataIn) {
        var calcDataOut = [];

        for(var i = 0; i < calcDataIn.length; i++) {
            var calcTrace = calcDataIn[i],
                trace = calcTrace[0].trace;

            if(trace.visible === true) calcDataOut.push(calcTrace);
        }

        return calcDataOut;
    }

    // build up moduleName -> calcData hash
    for(i = 0; i < subplotCalcData.length; i++) {
        var calcTraces = subplotCalcData[i],
            trace = calcTraces[0].trace;

        // skip over visible === false traces
        // as they don't have `_module` ref
        if(trace.visible) {
            traceHash[trace.type] = traceHash[trace.type] || [];
            traceHash[trace.type].push(calcTraces);
        }
    }

    var moduleNamesOld = Object.keys(traceHashOld);
    var moduleNames = Object.keys(traceHash);

    // when a trace gets deleted, make sure that its module's
    // plot method is called so that it is properly
    // removed from the DOM.
    for(i = 0; i < moduleNamesOld.length; i++) {
        var moduleName = moduleNamesOld[i];

        if(moduleNames.indexOf(moduleName) === -1) {
            var fakeCalcTrace = traceHashOld[moduleName][0],
                fakeTrace = fakeCalcTrace[0].trace;

            fakeTrace.visible = false;
            traceHash[moduleName] = [fakeCalcTrace];
        }
    }

    // update list of module names to include 'fake' traces added above
    moduleNames = Object.keys(traceHash);

    // call module plot method
    for(i = 0; i < moduleNames.length; i++) {
        var moduleCalcData = traceHash[moduleNames[i]],
            _module = moduleCalcData[0][0].trace._module;

        _module.plot(subplot, filterVisible(moduleCalcData), subplotLayout);
    }

    // update moduleName -> calcData hash
    subplot.traceHash = traceHash;
};

},{"../components/color":233,"../components/errorbars":263,"../constants/numerical":334,"../lib":353,"../plot_api/plot_schema":385,"../plotly":391,"../registry":436,"./animation_attributes":392,"./attributes":394,"./command":419,"./font_attributes":420,"./frame_attributes":421,"./layout_attributes":427,"d3":62,"fast-isnumeric":68}],430:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../../traces/scatter/attributes');
var scatterMarkerAttrs = scatterAttrs.marker;

module.exports = {
    r: scatterAttrs.r,
    t: scatterAttrs.t,
    marker: {
        color: scatterMarkerAttrs.color,
        size: scatterMarkerAttrs.size,
        symbol: scatterMarkerAttrs.symbol,
        opacity: scatterMarkerAttrs.opacity,
        editType: 'calc'
    }
};

},{"../../traces/scatter/attributes":491}],431:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var axesAttrs = require('../cartesian/layout_attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var overrideAll = require('../../plot_api/edit_types').overrideAll;

var domainAttr = extendFlat({}, axesAttrs.domain, {
    
});

function mergeAttrs(axisName, nonCommonAttrs) {
    var commonAttrs = {
        showline: {
            valType: 'boolean',
            
            
        },
        showticklabels: {
            valType: 'boolean',
            
            
        },
        tickorientation: {
            valType: 'enumerated',
            values: ['horizontal', 'vertical'],
            
            
        },
        ticklen: {
            valType: 'number',
            min: 0,
            
            
        },
        tickcolor: {
            valType: 'color',
            
            
        },
        ticksuffix: {
            valType: 'string',
            
            
        },
        endpadding: {
            valType: 'number',
            
        },
        visible: {
            valType: 'boolean',
            
            
        }
    };

    return extendFlat({}, nonCommonAttrs, commonAttrs);
}

module.exports = overrideAll({
    radialaxis: mergeAttrs('radial', {
        range: {
            valType: 'info_array',
            
            items: [
                { valType: 'number' },
                { valType: 'number' }
            ],
            
        },
        domain: domainAttr,
        orientation: {
            valType: 'number',
            
            
        }
    }),

    angularaxis: mergeAttrs('angular', {
        range: {
            valType: 'info_array',
            
            items: [
                { valType: 'number', dflt: 0 },
                { valType: 'number', dflt: 360 }
            ],
            
        },
        domain: domainAttr
    }),

    // attributes that appear at layout root
    layout: {
        direction: {
            valType: 'enumerated',
            values: ['clockwise', 'counterclockwise'],
            
            
        },
        orientation: {
            valType: 'angle',
            
            
        }
    }
}, 'plot', 'nested');

},{"../../lib/extend":344,"../../plot_api/edit_types":380,"../cartesian/layout_attributes":407}],432:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Polar = module.exports = require('./micropolar');

Polar.manager = require('./micropolar_manager');

},{"./micropolar":433,"./micropolar_manager":434}],433:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

var d3 = require('d3');
var Lib = require('../../lib');
var extendDeepAll = Lib.extendDeepAll;
var MID_SHIFT = require('../../constants/alignment').MID_SHIFT;

var µ = module.exports = { version: '0.2.2' };

µ.Axis = function module() {
    var config = {
        data: [],
        layout: {}
    }, inputConfig = {}, liveConfig = {};
    var svg, container, dispatch = d3.dispatch('hover'), radialScale, angularScale;
    var exports = {};
    function render(_container) {
        container = _container || container;
        var data = config.data;
        var axisConfig = config.layout;
        if (typeof container == 'string' || container.nodeName) container = d3.select(container);
        container.datum(data).each(function(_data, _index) {
            var dataOriginal = _data.slice();
            liveConfig = {
                data: µ.util.cloneJson(dataOriginal),
                layout: µ.util.cloneJson(axisConfig)
            };
            var colorIndex = 0;
            dataOriginal.forEach(function(d, i) {
                if (!d.color) {
                    d.color = axisConfig.defaultColorRange[colorIndex];
                    colorIndex = (colorIndex + 1) % axisConfig.defaultColorRange.length;
                }
                if (!d.strokeColor) {
                    d.strokeColor = d.geometry === 'LinePlot' ? d.color : d3.rgb(d.color).darker().toString();
                }
                liveConfig.data[i].color = d.color;
                liveConfig.data[i].strokeColor = d.strokeColor;
                liveConfig.data[i].strokeDash = d.strokeDash;
                liveConfig.data[i].strokeSize = d.strokeSize;
            });
            var data = dataOriginal.filter(function(d, i) {
                var visible = d.visible;
                return typeof visible === 'undefined' || visible === true;
            });
            var isStacked = false;
            var dataWithGroupId = data.map(function(d, i) {
                isStacked = isStacked || typeof d.groupId !== 'undefined';
                return d;
            });
            if (isStacked) {
                var grouped = d3.nest().key(function(d, i) {
                    return typeof d.groupId != 'undefined' ? d.groupId : 'unstacked';
                }).entries(dataWithGroupId);
                var dataYStack = [];
                var stacked = grouped.map(function(d, i) {
                    if (d.key === 'unstacked') return d.values; else {
                        var prevArray = d.values[0].r.map(function(d, i) {
                            return 0;
                        });
                        d.values.forEach(function(d, i, a) {
                            d.yStack = [ prevArray ];
                            dataYStack.push(prevArray);
                            prevArray = µ.util.sumArrays(d.r, prevArray);
                        });
                        return d.values;
                    }
                });
                data = d3.merge(stacked);
            }
            data.forEach(function(d, i) {
                d.t = Array.isArray(d.t[0]) ? d.t : [ d.t ];
                d.r = Array.isArray(d.r[0]) ? d.r : [ d.r ];
            });
            var radius = Math.min(axisConfig.width - axisConfig.margin.left - axisConfig.margin.right, axisConfig.height - axisConfig.margin.top - axisConfig.margin.bottom) / 2;
            radius = Math.max(10, radius);
            var chartCenter = [ axisConfig.margin.left + radius, axisConfig.margin.top + radius ];
            var extent;
            if (isStacked) {
                var highestStackedValue = d3.max(µ.util.sumArrays(µ.util.arrayLast(data).r[0], µ.util.arrayLast(dataYStack)));
                extent = [ 0, highestStackedValue ];
            } else extent = d3.extent(µ.util.flattenArray(data.map(function(d, i) {
                return d.r;
            })));
            if (axisConfig.radialAxis.domain != µ.DATAEXTENT) extent[0] = 0;
            radialScale = d3.scale.linear().domain(axisConfig.radialAxis.domain != µ.DATAEXTENT && axisConfig.radialAxis.domain ? axisConfig.radialAxis.domain : extent).range([ 0, radius ]);
            liveConfig.layout.radialAxis.domain = radialScale.domain();
            var angularDataMerged = µ.util.flattenArray(data.map(function(d, i) {
                return d.t;
            }));
            var isOrdinal = typeof angularDataMerged[0] === 'string';
            var ticks;
            if (isOrdinal) {
                angularDataMerged = µ.util.deduplicate(angularDataMerged);
                ticks = angularDataMerged.slice();
                angularDataMerged = d3.range(angularDataMerged.length);
                data = data.map(function(d, i) {
                    var result = d;
                    d.t = [ angularDataMerged ];
                    if (isStacked) result.yStack = d.yStack;
                    return result;
                });
            }
            var hasOnlyLineOrDotPlot = data.filter(function(d, i) {
                return d.geometry === 'LinePlot' || d.geometry === 'DotPlot';
            }).length === data.length;
            var needsEndSpacing = axisConfig.needsEndSpacing === null ? isOrdinal || !hasOnlyLineOrDotPlot : axisConfig.needsEndSpacing;
            var useProvidedDomain = axisConfig.angularAxis.domain && axisConfig.angularAxis.domain != µ.DATAEXTENT && !isOrdinal && axisConfig.angularAxis.domain[0] >= 0;
            var angularDomain = useProvidedDomain ? axisConfig.angularAxis.domain : d3.extent(angularDataMerged);
            var angularDomainStep = Math.abs(angularDataMerged[1] - angularDataMerged[0]);
            if (hasOnlyLineOrDotPlot && !isOrdinal) angularDomainStep = 0;
            var angularDomainWithPadding = angularDomain.slice();
            if (needsEndSpacing && isOrdinal) angularDomainWithPadding[1] += angularDomainStep;
            var tickCount = axisConfig.angularAxis.ticksCount || 4;
            if (tickCount > 8) tickCount = tickCount / (tickCount / 8) + tickCount % 8;
            if (axisConfig.angularAxis.ticksStep) {
                tickCount = (angularDomainWithPadding[1] - angularDomainWithPadding[0]) / tickCount;
            }
            var angularTicksStep = axisConfig.angularAxis.ticksStep || (angularDomainWithPadding[1] - angularDomainWithPadding[0]) / (tickCount * (axisConfig.minorTicks + 1));
            if (ticks) angularTicksStep = Math.max(Math.round(angularTicksStep), 1);
            if (!angularDomainWithPadding[2]) angularDomainWithPadding[2] = angularTicksStep;
            var angularAxisRange = d3.range.apply(this, angularDomainWithPadding);
            angularAxisRange = angularAxisRange.map(function(d, i) {
                return parseFloat(d.toPrecision(12));
            });
            angularScale = d3.scale.linear().domain(angularDomainWithPadding.slice(0, 2)).range(axisConfig.direction === 'clockwise' ? [ 0, 360 ] : [ 360, 0 ]);
            liveConfig.layout.angularAxis.domain = angularScale.domain();
            liveConfig.layout.angularAxis.endPadding = needsEndSpacing ? angularDomainStep : 0;
            svg = d3.select(this).select('svg.chart-root');
            if (typeof svg === 'undefined' || svg.empty()) {
                var skeleton = "<svg xmlns='http://www.w3.org/2000/svg' class='chart-root'>' + '<g class='outer-group'>' + '<g class='chart-group'>' + '<circle class='background-circle'></circle>' + '<g class='geometry-group'></g>' + '<g class='radial axis-group'>' + '<circle class='outside-circle'></circle>' + '</g>' + '<g class='angular axis-group'></g>' + '<g class='guides-group'><line></line><circle r='0'></circle></g>' + '</g>' + '<g class='legend-group'></g>' + '<g class='tooltips-group'></g>' + '<g class='title-group'><text></text></g>' + '</g>' + '</svg>";
                var doc = new DOMParser().parseFromString(skeleton, 'application/xml');
                var newSvg = this.appendChild(this.ownerDocument.importNode(doc.documentElement, true));
                svg = d3.select(newSvg);
            }
            svg.select('.guides-group').style({
                'pointer-events': 'none'
            });
            svg.select('.angular.axis-group').style({
                'pointer-events': 'none'
            });
            svg.select('.radial.axis-group').style({
                'pointer-events': 'none'
            });
            var chartGroup = svg.select('.chart-group');
            var lineStyle = {
                fill: 'none',
                stroke: axisConfig.tickColor
            };
            var fontStyle = {
                'font-size': axisConfig.font.size,
                'font-family': axisConfig.font.family,
                fill: axisConfig.font.color,
                'text-shadow': [ '-1px 0px', '1px -1px', '-1px 1px', '1px 1px' ].map(function(d, i) {
                    return ' ' + d + ' 0 ' + axisConfig.font.outlineColor;
                }).join(',')
            };
            var legendContainer;
            if (axisConfig.showLegend) {
                legendContainer = svg.select('.legend-group').attr({
                    transform: 'translate(' + [ radius, axisConfig.margin.top ] + ')'
                }).style({
                    display: 'block'
                });
                var elements = data.map(function(d, i) {
                    var datumClone = µ.util.cloneJson(d);
                    datumClone.symbol = d.geometry === 'DotPlot' ? d.dotType || 'circle' : d.geometry != 'LinePlot' ? 'square' : 'line';
                    datumClone.visibleInLegend = typeof d.visibleInLegend === 'undefined' || d.visibleInLegend;
                    datumClone.color = d.geometry === 'LinePlot' ? d.strokeColor : d.color;
                    return datumClone;
                });

                µ.Legend().config({
                    data: data.map(function(d, i) {
                        return d.name || 'Element' + i;
                    }),
                    legendConfig: extendDeepAll({},
                        µ.Legend.defaultConfig().legendConfig,
                        {
                            container: legendContainer,
                            elements: elements,
                            reverseOrder: axisConfig.legend.reverseOrder
                        }
                    )
                })();

                var legendBBox = legendContainer.node().getBBox();
                radius = Math.min(axisConfig.width - legendBBox.width - axisConfig.margin.left - axisConfig.margin.right, axisConfig.height - axisConfig.margin.top - axisConfig.margin.bottom) / 2;
                radius = Math.max(10, radius);
                chartCenter = [ axisConfig.margin.left + radius, axisConfig.margin.top + radius ];
                radialScale.range([ 0, radius ]);
                liveConfig.layout.radialAxis.domain = radialScale.domain();
                legendContainer.attr('transform', 'translate(' + [ chartCenter[0] + radius, chartCenter[1] - radius ] + ')');
            } else {
                legendContainer = svg.select('.legend-group').style({
                    display: 'none'
                });
            }
            svg.attr({
                width: axisConfig.width,
                height: axisConfig.height
            }).style({
                opacity: axisConfig.opacity
            });
            chartGroup.attr('transform', 'translate(' + chartCenter + ')').style({
                cursor: 'crosshair'
            });
            var centeringOffset = [ (axisConfig.width - (axisConfig.margin.left + axisConfig.margin.right + radius * 2 + (legendBBox ? legendBBox.width : 0))) / 2, (axisConfig.height - (axisConfig.margin.top + axisConfig.margin.bottom + radius * 2)) / 2 ];
            centeringOffset[0] = Math.max(0, centeringOffset[0]);
            centeringOffset[1] = Math.max(0, centeringOffset[1]);
            svg.select('.outer-group').attr('transform', 'translate(' + centeringOffset + ')');
            if (axisConfig.title) {
                var title = svg.select('g.title-group text').style(fontStyle).text(axisConfig.title);
                var titleBBox = title.node().getBBox();
                title.attr({
                    x: chartCenter[0] - titleBBox.width / 2,
                    y: chartCenter[1] - radius - 20
                });
            }
            var radialAxis = svg.select('.radial.axis-group');
            if (axisConfig.radialAxis.gridLinesVisible) {
                var gridCircles = radialAxis.selectAll('circle.grid-circle').data(radialScale.ticks(5));
                gridCircles.enter().append('circle').attr({
                    'class': 'grid-circle'
                }).style(lineStyle);
                gridCircles.attr('r', radialScale);
                gridCircles.exit().remove();
            }
            radialAxis.select('circle.outside-circle').attr({
                r: radius
            }).style(lineStyle);
            var backgroundCircle = svg.select('circle.background-circle').attr({
                r: radius
            }).style({
                fill: axisConfig.backgroundColor,
                stroke: axisConfig.stroke
            });
            function currentAngle(d, i) {
                return angularScale(d) % 360 + axisConfig.orientation;
            }
            if (axisConfig.radialAxis.visible) {
                var axis = d3.svg.axis().scale(radialScale).ticks(5).tickSize(5);
                radialAxis.call(axis).attr({
                    transform: 'rotate(' + axisConfig.radialAxis.orientation + ')'
                });
                radialAxis.selectAll('.domain').style(lineStyle);
                radialAxis.selectAll('g>text').text(function(d, i) {
                    return this.textContent + axisConfig.radialAxis.ticksSuffix;
                }).style(fontStyle).style({
                    'text-anchor': 'start'
                }).attr({
                    x: 0,
                    y: 0,
                    dx: 0,
                    dy: 0,
                    transform: function(d, i) {
                        if (axisConfig.radialAxis.tickOrientation === 'horizontal') {
                            return 'rotate(' + -axisConfig.radialAxis.orientation + ') translate(' + [ 0, fontStyle['font-size'] ] + ')';
                        } else return 'translate(' + [ 0, fontStyle['font-size'] ] + ')';
                    }
                });
                radialAxis.selectAll('g>line').style({
                    stroke: 'black'
                });
            }
            var angularAxis = svg.select('.angular.axis-group').selectAll('g.angular-tick').data(angularAxisRange);
            var angularAxisEnter = angularAxis.enter().append('g').classed('angular-tick', true);
            angularAxis.attr({
                transform: function(d, i) {
                    return 'rotate(' + currentAngle(d, i) + ')';
                }
            }).style({
                display: axisConfig.angularAxis.visible ? 'block' : 'none'
            });
            angularAxis.exit().remove();
            angularAxisEnter.append('line').classed('grid-line', true).classed('major', function(d, i) {
                return i % (axisConfig.minorTicks + 1) == 0;
            }).classed('minor', function(d, i) {
                return !(i % (axisConfig.minorTicks + 1) == 0);
            }).style(lineStyle);
            angularAxisEnter.selectAll('.minor').style({
                stroke: axisConfig.minorTickColor
            });
            angularAxis.select('line.grid-line').attr({
                x1: axisConfig.tickLength ? radius - axisConfig.tickLength : 0,
                x2: radius
            }).style({
                display: axisConfig.angularAxis.gridLinesVisible ? 'block' : 'none'
            });
            angularAxisEnter.append('text').classed('axis-text', true).style(fontStyle);
            var ticksText = angularAxis.select('text.axis-text').attr({
                x: radius + axisConfig.labelOffset,
                dy: MID_SHIFT + 'em',
                transform: function(d, i) {
                    var angle = currentAngle(d, i);
                    var rad = radius + axisConfig.labelOffset;
                    var orient = axisConfig.angularAxis.tickOrientation;
                    if (orient == 'horizontal') return 'rotate(' + -angle + ' ' + rad + ' 0)'; else if (orient == 'radial') return angle < 270 && angle > 90 ? 'rotate(180 ' + rad + ' 0)' : null; else return 'rotate(' + (angle <= 180 && angle > 0 ? -90 : 90) + ' ' + rad + ' 0)';
                }
            }).style({
                'text-anchor': 'middle',
                display: axisConfig.angularAxis.labelsVisible ? 'block' : 'none'
            }).text(function(d, i) {
                if (i % (axisConfig.minorTicks + 1) != 0) return '';
                if (ticks) {
                    return ticks[d] + axisConfig.angularAxis.ticksSuffix;
                } else return d + axisConfig.angularAxis.ticksSuffix;
            }).style(fontStyle);
            if (axisConfig.angularAxis.rewriteTicks) ticksText.text(function(d, i) {
                if (i % (axisConfig.minorTicks + 1) != 0) return '';
                return axisConfig.angularAxis.rewriteTicks(this.textContent, i);
            });
            var rightmostTickEndX = d3.max(chartGroup.selectAll('.angular-tick text')[0].map(function(d, i) {
                return d.getCTM().e + d.getBBox().width;
            }));
            legendContainer.attr({
                transform: 'translate(' + [ radius + rightmostTickEndX, axisConfig.margin.top ] + ')'
            });
            var hasGeometry = svg.select('g.geometry-group').selectAll('g').size() > 0;
            var geometryContainer = svg.select('g.geometry-group').selectAll('g.geometry').data(data);
            geometryContainer.enter().append('g').attr({
                'class': function(d, i) {
                    return 'geometry geometry' + i;
                }
            });
            geometryContainer.exit().remove();
            if (data[0] || hasGeometry) {
                var geometryConfigs = [];
                data.forEach(function(d, i) {
                    var geometryConfig = {};
                    geometryConfig.radialScale = radialScale;
                    geometryConfig.angularScale = angularScale;
                    geometryConfig.container = geometryContainer.filter(function(dB, iB) {
                        return iB == i;
                    });
                    geometryConfig.geometry = d.geometry;
                    geometryConfig.orientation = axisConfig.orientation;
                    geometryConfig.direction = axisConfig.direction;
                    geometryConfig.index = i;
                    geometryConfigs.push({
                        data: d,
                        geometryConfig: geometryConfig
                    });
                });
                var geometryConfigsGrouped = d3.nest().key(function(d, i) {
                    return typeof d.data.groupId != 'undefined' || 'unstacked';
                }).entries(geometryConfigs);
                var geometryConfigsGrouped2 = [];
                geometryConfigsGrouped.forEach(function(d, i) {
                    if (d.key === 'unstacked') geometryConfigsGrouped2 = geometryConfigsGrouped2.concat(d.values.map(function(d, i) {
                        return [ d ];
                    })); else geometryConfigsGrouped2.push(d.values);
                });
                geometryConfigsGrouped2.forEach(function(d, i) {
                    var geometry;
                    if (Array.isArray(d)) geometry = d[0].geometryConfig.geometry; else geometry = d.geometryConfig.geometry;
                    var finalGeometryConfig = d.map(function(dB, iB) {
                        return extendDeepAll(µ[geometry].defaultConfig(), dB);
                    });
                    µ[geometry]().config(finalGeometryConfig)();
                });
            }
            var guides = svg.select('.guides-group');
            var tooltipContainer = svg.select('.tooltips-group');
            var angularTooltip = µ.tooltipPanel().config({
                container: tooltipContainer,
                fontSize: 8
            })();
            var radialTooltip = µ.tooltipPanel().config({
                container: tooltipContainer,
                fontSize: 8
            })();
            var geometryTooltip = µ.tooltipPanel().config({
                container: tooltipContainer,
                hasTick: true
            })();
            var angularValue, radialValue;
            if (!isOrdinal) {
                var angularGuideLine = guides.select('line').attr({
                    x1: 0,
                    y1: 0,
                    y2: 0
                }).style({
                    stroke: 'grey',
                    'pointer-events': 'none'
                });
                chartGroup.on('mousemove.angular-guide', function(d, i) {
                    var mouseAngle = µ.util.getMousePos(backgroundCircle).angle;
                    angularGuideLine.attr({
                        x2: -radius,
                        transform: 'rotate(' + mouseAngle + ')'
                    }).style({
                        opacity: .5
                    });
                    var angleWithOriginOffset = (mouseAngle + 180 + 360 - axisConfig.orientation) % 360;
                    angularValue = angularScale.invert(angleWithOriginOffset);
                    var pos = µ.util.convertToCartesian(radius + 12, mouseAngle + 180);
                    angularTooltip.text(µ.util.round(angularValue)).move([ pos[0] + chartCenter[0], pos[1] + chartCenter[1] ]);
                }).on('mouseout.angular-guide', function(d, i) {
                    guides.select('line').style({
                        opacity: 0
                    });
                });
            }
            var angularGuideCircle = guides.select('circle').style({
                stroke: 'grey',
                fill: 'none'
            });
            chartGroup.on('mousemove.radial-guide', function(d, i) {
                var r = µ.util.getMousePos(backgroundCircle).radius;
                angularGuideCircle.attr({
                    r: r
                }).style({
                    opacity: .5
                });
                radialValue = radialScale.invert(µ.util.getMousePos(backgroundCircle).radius);
                var pos = µ.util.convertToCartesian(r, axisConfig.radialAxis.orientation);
                radialTooltip.text(µ.util.round(radialValue)).move([ pos[0] + chartCenter[0], pos[1] + chartCenter[1] ]);
            }).on('mouseout.radial-guide', function(d, i) {
                angularGuideCircle.style({
                    opacity: 0
                });
                geometryTooltip.hide();
                angularTooltip.hide();
                radialTooltip.hide();
            });
            svg.selectAll('.geometry-group .mark').on('mouseover.tooltip', function(d, i) {
                var el = d3.select(this);
                var color = this.style.fill;
                var newColor = 'black';
                var opacity = this.style.opacity || 1;
                el.attr({
                    'data-opacity': opacity
                });
                if (color && color !== 'none') {
                    el.attr({
                        'data-fill': color
                    });
                    newColor = d3.hsl(color).darker().toString();
                    el.style({
                        fill: newColor,
                        opacity: 1
                    });
                    var textData = {
                        t: µ.util.round(d[0]),
                        r: µ.util.round(d[1])
                    };
                    if (isOrdinal) textData.t = ticks[d[0]];
                    var text = 't: ' + textData.t + ', r: ' + textData.r;
                    var bbox = this.getBoundingClientRect();
                    var svgBBox = svg.node().getBoundingClientRect();
                    var pos = [ bbox.left + bbox.width / 2 - centeringOffset[0] - svgBBox.left, bbox.top + bbox.height / 2 - centeringOffset[1] - svgBBox.top ];
                    geometryTooltip.config({
                        color: newColor
                    }).text(text);
                    geometryTooltip.move(pos);
                } else {
                    color = this.style.stroke || 'black';
                    el.attr({
                        'data-stroke': color
                    });
                    newColor = d3.hsl(color).darker().toString();
                    el.style({
                        stroke: newColor,
                        opacity: 1
                    });
                }
            }).on('mousemove.tooltip', function(d, i) {
                if (d3.event.which != 0) return false;
                if (d3.select(this).attr('data-fill')) geometryTooltip.show();
            }).on('mouseout.tooltip', function(d, i) {
                geometryTooltip.hide();
                var el = d3.select(this);
                var fillColor = el.attr('data-fill');
                if (fillColor) el.style({
                    fill: fillColor,
                    opacity: el.attr('data-opacity')
                }); else el.style({
                    stroke: el.attr('data-stroke'),
                    opacity: el.attr('data-opacity')
                });
            });
        });
        return exports;
    }
    exports.render = function(_container) {
        render(_container);
        return this;
    };
    exports.config = function(_x) {
        if (!arguments.length) return config;
        var xClone = µ.util.cloneJson(_x);
        xClone.data.forEach(function(d, i) {
            if (!config.data[i]) config.data[i] = {};
            extendDeepAll(config.data[i], µ.Axis.defaultConfig().data[0]);
            extendDeepAll(config.data[i], d);
        });
        extendDeepAll(config.layout, µ.Axis.defaultConfig().layout);
        extendDeepAll(config.layout, xClone.layout);
        return this;
    };
    exports.getLiveConfig = function() {
        return liveConfig;
    };
    exports.getinputConfig = function() {
        return inputConfig;
    };
    exports.radialScale = function(_x) {
        return radialScale;
    };
    exports.angularScale = function(_x) {
        return angularScale;
    };
    exports.svg = function() {
        return svg;
    };
    d3.rebind(exports, dispatch, 'on');
    return exports;
};

µ.Axis.defaultConfig = function(d, i) {
    var config = {
        data: [ {
            t: [ 1, 2, 3, 4 ],
            r: [ 10, 11, 12, 13 ],
            name: 'Line1',
            geometry: 'LinePlot',
            color: null,
            strokeDash: 'solid',
            strokeColor: null,
            strokeSize: '1',
            visibleInLegend: true,
            opacity: 1
        } ],
        layout: {
            defaultColorRange: d3.scale.category10().range(),
            title: null,
            height: 450,
            width: 500,
            margin: {
                top: 40,
                right: 40,
                bottom: 40,
                left: 40
            },
            font: {
                size: 12,
                color: 'gray',
                outlineColor: 'white',
                family: 'Tahoma, sans-serif'
            },
            direction: 'clockwise',
            orientation: 0,
            labelOffset: 10,
            radialAxis: {
                domain: null,
                orientation: -45,
                ticksSuffix: '',
                visible: true,
                gridLinesVisible: true,
                tickOrientation: 'horizontal',
                rewriteTicks: null
            },
            angularAxis: {
                domain: [ 0, 360 ],
                ticksSuffix: '',
                visible: true,
                gridLinesVisible: true,
                labelsVisible: true,
                tickOrientation: 'horizontal',
                rewriteTicks: null,
                ticksCount: null,
                ticksStep: null
            },
            minorTicks: 0,
            tickLength: null,
            tickColor: 'silver',
            minorTickColor: '#eee',
            backgroundColor: 'none',
            needsEndSpacing: null,
            showLegend: true,
            legend: {
                reverseOrder: false
            },
            opacity: 1
        }
    };
    return config;
};

µ.util = {};

µ.DATAEXTENT = 'dataExtent';

µ.AREA = 'AreaChart';

µ.LINE = 'LinePlot';

µ.DOT = 'DotPlot';

µ.BAR = 'BarChart';

µ.util._override = function(_objA, _objB) {
    for (var x in _objA) if (x in _objB) _objB[x] = _objA[x];
};

µ.util._extend = function(_objA, _objB) {
    for (var x in _objA) _objB[x] = _objA[x];
};

µ.util._rndSnd = function() {
    return Math.random() * 2 - 1 + (Math.random() * 2 - 1) + (Math.random() * 2 - 1);
};

µ.util.dataFromEquation2 = function(_equation, _step) {
    var step = _step || 6;
    var data = d3.range(0, 360 + step, step).map(function(deg, index) {
        var theta = deg * Math.PI / 180;
        var radius = _equation(theta);
        return [ deg, radius ];
    });
    return data;
};

µ.util.dataFromEquation = function(_equation, _step, _name) {
    var step = _step || 6;
    var t = [], r = [];
    d3.range(0, 360 + step, step).forEach(function(deg, index) {
        var theta = deg * Math.PI / 180;
        var radius = _equation(theta);
        t.push(deg);
        r.push(radius);
    });
    var result = {
        t: t,
        r: r
    };
    if (_name) result.name = _name;
    return result;
};

µ.util.ensureArray = function(_val, _count) {
    if (typeof _val === 'undefined') return null;
    var arr = [].concat(_val);
    return d3.range(_count).map(function(d, i) {
        return arr[i] || arr[0];
    });
};

µ.util.fillArrays = function(_obj, _valueNames, _count) {
    _valueNames.forEach(function(d, i) {
        _obj[d] = µ.util.ensureArray(_obj[d], _count);
    });
    return _obj;
};

µ.util.cloneJson = function(json) {
    return JSON.parse(JSON.stringify(json));
};

µ.util.validateKeys = function(obj, keys) {
    if (typeof keys === 'string') keys = keys.split('.');
    var next = keys.shift();
    return obj[next] && (!keys.length || objHasKeys(obj[next], keys));
};

µ.util.sumArrays = function(a, b) {
    return d3.zip(a, b).map(function(d, i) {
        return d3.sum(d);
    });
};

µ.util.arrayLast = function(a) {
    return a[a.length - 1];
};

µ.util.arrayEqual = function(a, b) {
    var i = Math.max(a.length, b.length, 1);
    while (i-- >= 0 && a[i] === b[i]) ;
    return i === -2;
};

µ.util.flattenArray = function(arr) {
    var r = [];
    while (!µ.util.arrayEqual(r, arr)) {
        r = arr;
        arr = [].concat.apply([], arr);
    }
    return arr;
};

µ.util.deduplicate = function(arr) {
    return arr.filter(function(v, i, a) {
        return a.indexOf(v) == i;
    });
};

µ.util.convertToCartesian = function(radius, theta) {
    var thetaRadians = theta * Math.PI / 180;
    var x = radius * Math.cos(thetaRadians);
    var y = radius * Math.sin(thetaRadians);
    return [ x, y ];
};

µ.util.round = function(_value, _digits) {
    var digits = _digits || 2;
    var mult = Math.pow(10, digits);
    return Math.round(_value * mult) / mult;
};

µ.util.getMousePos = function(_referenceElement) {
    var mousePos = d3.mouse(_referenceElement.node());
    var mouseX = mousePos[0];
    var mouseY = mousePos[1];
    var mouse = {};
    mouse.x = mouseX;
    mouse.y = mouseY;
    mouse.pos = mousePos;
    mouse.angle = (Math.atan2(mouseY, mouseX) + Math.PI) * 180 / Math.PI;
    mouse.radius = Math.sqrt(mouseX * mouseX + mouseY * mouseY);
    return mouse;
};

µ.util.duplicatesCount = function(arr) {
    var uniques = {}, val;
    var dups = {};
    for (var i = 0, len = arr.length; i < len; i++) {
        val = arr[i];
        if (val in uniques) {
            uniques[val]++;
            dups[val] = uniques[val];
        } else {
            uniques[val] = 1;
        }
    }
    return dups;
};

µ.util.duplicates = function(arr) {
    return Object.keys(µ.util.duplicatesCount(arr));
};

µ.util.translator = function(obj, sourceBranch, targetBranch, reverse) {
    if (reverse) {
        var targetBranchCopy = targetBranch.slice();
        targetBranch = sourceBranch;
        sourceBranch = targetBranchCopy;
    }
    var value = sourceBranch.reduce(function(previousValue, currentValue) {
        if (typeof previousValue != 'undefined') return previousValue[currentValue];
    }, obj);
    if (typeof value === 'undefined') return;
    sourceBranch.reduce(function(previousValue, currentValue, index) {
        if (typeof previousValue == 'undefined') return;
        if (index === sourceBranch.length - 1) delete previousValue[currentValue];
        return previousValue[currentValue];
    }, obj);
    targetBranch.reduce(function(previousValue, currentValue, index) {
        if (typeof previousValue[currentValue] === 'undefined') previousValue[currentValue] = {};
        if (index === targetBranch.length - 1) previousValue[currentValue] = value;
        return previousValue[currentValue];
    }, obj);
};

µ.PolyChart = function module() {
    var config = [ µ.PolyChart.defaultConfig() ];
    var dispatch = d3.dispatch('hover');
    var dashArray = {
        solid: 'none',
        dash: [ 5, 2 ],
        dot: [ 2, 5 ]
    };
    var colorScale;
    function exports() {
        var geometryConfig = config[0].geometryConfig;
        var container = geometryConfig.container;
        if (typeof container == 'string') container = d3.select(container);
        container.datum(config).each(function(_config, _index) {
            var isStack = !!_config[0].data.yStack;
            var data = _config.map(function(d, i) {
                if (isStack) return d3.zip(d.data.t[0], d.data.r[0], d.data.yStack[0]); else return d3.zip(d.data.t[0], d.data.r[0]);
            });
            var angularScale = geometryConfig.angularScale;
            var domainMin = geometryConfig.radialScale.domain()[0];
            var generator = {};
            generator.bar = function(d, i, pI) {
                var dataConfig = _config[pI].data;
                var h = geometryConfig.radialScale(d[1]) - geometryConfig.radialScale(0);
                var stackTop = geometryConfig.radialScale(d[2] || 0);
                var w = dataConfig.barWidth;
                d3.select(this).attr({
                    'class': 'mark bar',
                    d: 'M' + [ [ h + stackTop, -w / 2 ], [ h + stackTop, w / 2 ], [ stackTop, w / 2 ], [ stackTop, -w / 2 ] ].join('L') + 'Z',
                    transform: function(d, i) {
                        return 'rotate(' + (geometryConfig.orientation + angularScale(d[0])) + ')';
                    }
                });
            };
            generator.dot = function(d, i, pI) {
                var stackedData = d[2] ? [ d[0], d[1] + d[2] ] : d;
                var symbol = d3.svg.symbol().size(_config[pI].data.dotSize).type(_config[pI].data.dotType)(d, i);
                d3.select(this).attr({
                    'class': 'mark dot',
                    d: symbol,
                    transform: function(d, i) {
                        var coord = convertToCartesian(getPolarCoordinates(stackedData));
                        return 'translate(' + [ coord.x, coord.y ] + ')';
                    }
                });
            };
            var line = d3.svg.line.radial().interpolate(_config[0].data.lineInterpolation).radius(function(d) {
                return geometryConfig.radialScale(d[1]);
            }).angle(function(d) {
                return geometryConfig.angularScale(d[0]) * Math.PI / 180;
            });
            generator.line = function(d, i, pI) {
                var lineData = d[2] ? data[pI].map(function(d, i) {
                    return [ d[0], d[1] + d[2] ];
                }) : data[pI];
                d3.select(this).each(generator['dot']).style({
                    opacity: function(dB, iB) {
                        return +_config[pI].data.dotVisible;
                    },
                    fill: markStyle.stroke(d, i, pI)
                }).attr({
                    'class': 'mark dot'
                });
                if (i > 0) return;
                var lineSelection = d3.select(this.parentNode).selectAll('path.line').data([ 0 ]);
                lineSelection.enter().insert('path');
                lineSelection.attr({
                    'class': 'line',
                    d: line(lineData),
                    transform: function(dB, iB) {
                        return 'rotate(' + (geometryConfig.orientation + 90) + ')';
                    },
                    'pointer-events': 'none'
                }).style({
                    fill: function(dB, iB) {
                        return markStyle.fill(d, i, pI);
                    },
                    'fill-opacity': 0,
                    stroke: function(dB, iB) {
                        return markStyle.stroke(d, i, pI);
                    },
                    'stroke-width': function(dB, iB) {
                        return markStyle['stroke-width'](d, i, pI);
                    },
                    'stroke-dasharray': function(dB, iB) {
                        return markStyle['stroke-dasharray'](d, i, pI);
                    },
                    opacity: function(dB, iB) {
                        return markStyle.opacity(d, i, pI);
                    },
                    display: function(dB, iB) {
                        return markStyle.display(d, i, pI);
                    }
                });
            };
            var angularRange = geometryConfig.angularScale.range();
            var triangleAngle = Math.abs(angularRange[1] - angularRange[0]) / data[0].length * Math.PI / 180;
            var arc = d3.svg.arc().startAngle(function(d) {
                return -triangleAngle / 2;
            }).endAngle(function(d) {
                return triangleAngle / 2;
            }).innerRadius(function(d) {
                return geometryConfig.radialScale(domainMin + (d[2] || 0));
            }).outerRadius(function(d) {
                return geometryConfig.radialScale(domainMin + (d[2] || 0)) + geometryConfig.radialScale(d[1]);
            });
            generator.arc = function(d, i, pI) {
                d3.select(this).attr({
                    'class': 'mark arc',
                    d: arc,
                    transform: function(d, i) {
                        return 'rotate(' + (geometryConfig.orientation + angularScale(d[0]) + 90) + ')';
                    }
                });
            };
            var markStyle = {
                fill: function(d, i, pI) {
                    return _config[pI].data.color;
                },
                stroke: function(d, i, pI) {
                    return _config[pI].data.strokeColor;
                },
                'stroke-width': function(d, i, pI) {
                    return _config[pI].data.strokeSize + 'px';
                },
                'stroke-dasharray': function(d, i, pI) {
                    return dashArray[_config[pI].data.strokeDash];
                },
                opacity: function(d, i, pI) {
                    return _config[pI].data.opacity;
                },
                display: function(d, i, pI) {
                    return typeof _config[pI].data.visible === 'undefined' || _config[pI].data.visible ? 'block' : 'none';
                }
            };
            var geometryLayer = d3.select(this).selectAll('g.layer').data(data);
            geometryLayer.enter().append('g').attr({
                'class': 'layer'
            });
            var geometry = geometryLayer.selectAll('path.mark').data(function(d, i) {
                return d;
            });
            geometry.enter().append('path').attr({
                'class': 'mark'
            });
            geometry.style(markStyle).each(generator[geometryConfig.geometryType]);
            geometry.exit().remove();
            geometryLayer.exit().remove();
            function getPolarCoordinates(d, i) {
                var r = geometryConfig.radialScale(d[1]);
                var t = (geometryConfig.angularScale(d[0]) + geometryConfig.orientation) * Math.PI / 180;
                return {
                    r: r,
                    t: t
                };
            }
            function convertToCartesian(polarCoordinates) {
                var x = polarCoordinates.r * Math.cos(polarCoordinates.t);
                var y = polarCoordinates.r * Math.sin(polarCoordinates.t);
                return {
                    x: x,
                    y: y
                };
            }
        });
    }
    exports.config = function(_x) {
        if (!arguments.length) return config;
        _x.forEach(function(d, i) {
            if (!config[i]) config[i] = {};
            extendDeepAll(config[i], µ.PolyChart.defaultConfig());
            extendDeepAll(config[i], d);
        });
        return this;
    };
    exports.getColorScale = function() {
        return colorScale;
    };
    d3.rebind(exports, dispatch, 'on');
    return exports;
};

µ.PolyChart.defaultConfig = function() {
    var config = {
        data: {
            name: 'geom1',
            t: [ [ 1, 2, 3, 4 ] ],
            r: [ [ 1, 2, 3, 4 ] ],
            dotType: 'circle',
            dotSize: 64,
            dotVisible: false,
            barWidth: 20,
            color: '#ffa500',
            strokeSize: 1,
            strokeColor: 'silver',
            strokeDash: 'solid',
            opacity: 1,
            index: 0,
            visible: true,
            visibleInLegend: true
        },
        geometryConfig: {
            geometry: 'LinePlot',
            geometryType: 'arc',
            direction: 'clockwise',
            orientation: 0,
            container: 'body',
            radialScale: null,
            angularScale: null,
            colorScale: d3.scale.category20()
        }
    };
    return config;
};

µ.BarChart = function module() {
    return µ.PolyChart();
};

µ.BarChart.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'bar'
        }
    };
    return config;
};

µ.AreaChart = function module() {
    return µ.PolyChart();
};

µ.AreaChart.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'arc'
        }
    };
    return config;
};

µ.DotPlot = function module() {
    return µ.PolyChart();
};

µ.DotPlot.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'dot',
            dotType: 'circle'
        }
    };
    return config;
};

µ.LinePlot = function module() {
    return µ.PolyChart();
};

µ.LinePlot.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'line'
        }
    };
    return config;
};

µ.Legend = function module() {
    var config = µ.Legend.defaultConfig();
    var dispatch = d3.dispatch('hover');
    function exports() {
        var legendConfig = config.legendConfig;
        var flattenData = config.data.map(function(d, i) {
            return [].concat(d).map(function(dB, iB) {
                var element = extendDeepAll({}, legendConfig.elements[i]);
                element.name = dB;
                element.color = [].concat(legendConfig.elements[i].color)[iB];
                return element;
            });
        });
        var data = d3.merge(flattenData);
        data = data.filter(function(d, i) {
            return legendConfig.elements[i] && (legendConfig.elements[i].visibleInLegend || typeof legendConfig.elements[i].visibleInLegend === 'undefined');
        });
        if (legendConfig.reverseOrder) data = data.reverse();
        var container = legendConfig.container;
        if (typeof container == 'string' || container.nodeName) container = d3.select(container);
        var colors = data.map(function(d, i) {
            return d.color;
        });
        var lineHeight = legendConfig.fontSize;
        var isContinuous = legendConfig.isContinuous == null ? typeof data[0] === 'number' : legendConfig.isContinuous;
        var height = isContinuous ? legendConfig.height : lineHeight * data.length;
        var legendContainerGroup = container.classed('legend-group', true);
        var svg = legendContainerGroup.selectAll('svg').data([ 0 ]);
        var svgEnter = svg.enter().append('svg').attr({
            width: 300,
            height: height + lineHeight,
            xmlns: 'http://www.w3.org/2000/svg',
            'xmlns:xlink': 'http://www.w3.org/1999/xlink',
            version: '1.1'
        });
        svgEnter.append('g').classed('legend-axis', true);
        svgEnter.append('g').classed('legend-marks', true);
        var dataNumbered = d3.range(data.length);
        var colorScale = d3.scale[isContinuous ? 'linear' : 'ordinal']().domain(dataNumbered).range(colors);
        var dataScale = d3.scale[isContinuous ? 'linear' : 'ordinal']().domain(dataNumbered)[isContinuous ? 'range' : 'rangePoints']([ 0, height ]);
        var shapeGenerator = function(_type, _size) {
            var squareSize = _size * 3;
            if (_type === 'line') {
                return 'M' + [ [ -_size / 2, -_size / 12 ], [ _size / 2, -_size / 12 ], [ _size / 2, _size / 12 ], [ -_size / 2, _size / 12 ] ] + 'Z';
            } else if (d3.svg.symbolTypes.indexOf(_type) != -1) return d3.svg.symbol().type(_type).size(squareSize)(); else return d3.svg.symbol().type('square').size(squareSize)();
        };
        if (isContinuous) {
            var gradient = svg.select('.legend-marks').append('defs').append('linearGradient').attr({
                id: 'grad1',
                x1: '0%',
                y1: '0%',
                x2: '0%',
                y2: '100%'
            }).selectAll('stop').data(colors);
            gradient.enter().append('stop');
            gradient.attr({
                offset: function(d, i) {
                    return i / (colors.length - 1) * 100 + '%';
                }
            }).style({
                'stop-color': function(d, i) {
                    return d;
                }
            });
            svg.append('rect').classed('legend-mark', true).attr({
                height: legendConfig.height,
                width: legendConfig.colorBandWidth,
                fill: 'url(#grad1)'
            });
        } else {
            var legendElement = svg.select('.legend-marks').selectAll('path.legend-mark').data(data);
            legendElement.enter().append('path').classed('legend-mark', true);
            legendElement.attr({
                transform: function(d, i) {
                    return 'translate(' + [ lineHeight / 2, dataScale(i) + lineHeight / 2 ] + ')';
                },
                d: function(d, i) {
                    var symbolType = d.symbol;
                    return shapeGenerator(symbolType, lineHeight);
                },
                fill: function(d, i) {
                    return colorScale(i);
                }
            });
            legendElement.exit().remove();
        }
        var legendAxis = d3.svg.axis().scale(dataScale).orient('right');
        var axis = svg.select('g.legend-axis').attr({
            transform: 'translate(' + [ isContinuous ? legendConfig.colorBandWidth : lineHeight, lineHeight / 2 ] + ')'
        }).call(legendAxis);
        axis.selectAll('.domain').style({
            fill: 'none',
            stroke: 'none'
        });
        axis.selectAll('line').style({
            fill: 'none',
            stroke: isContinuous ? legendConfig.textColor : 'none'
        });
        axis.selectAll('text').style({
            fill: legendConfig.textColor,
            'font-size': legendConfig.fontSize
        }).text(function(d, i) {
            return data[i].name;
        });
        return exports;
    }
    exports.config = function(_x) {
        if (!arguments.length) return config;
        extendDeepAll(config, _x);
        return this;
    };
    d3.rebind(exports, dispatch, 'on');
    return exports;
};

µ.Legend.defaultConfig = function(d, i) {
    var config = {
        data: [ 'a', 'b', 'c' ],
        legendConfig: {
            elements: [ {
                symbol: 'line',
                color: 'red'
            }, {
                symbol: 'square',
                color: 'yellow'
            }, {
                symbol: 'diamond',
                color: 'limegreen'
            } ],
            height: 150,
            colorBandWidth: 30,
            fontSize: 12,
            container: 'body',
            isContinuous: null,
            textColor: 'grey',
            reverseOrder: false
        }
    };
    return config;
};

µ.tooltipPanel = function() {
    var tooltipEl, tooltipTextEl, backgroundEl;
    var config = {
        container: null,
        hasTick: false,
        fontSize: 12,
        color: 'white',
        padding: 5
    };
    var id = 'tooltip-' + µ.tooltipPanel.uid++;
    var tickSize = 10;
    var exports = function() {
        tooltipEl = config.container.selectAll('g.' + id).data([ 0 ]);
        var tooltipEnter = tooltipEl.enter().append('g').classed(id, true).style({
            'pointer-events': 'none',
            display: 'none'
        });
        backgroundEl = tooltipEnter.append('path').style({
            fill: 'white',
            'fill-opacity': .9
        }).attr({
            d: 'M0 0'
        });
        tooltipTextEl = tooltipEnter.append('text').attr({
            dx: config.padding + tickSize,
            dy: +config.fontSize * .3
        });
        return exports;
    };
    exports.text = function(_text) {
        var l = d3.hsl(config.color).l;
        var strokeColor = l >= .5 ? '#aaa' : 'white';
        var fillColor = l >= .5 ? 'black' : 'white';
        var text = _text || '';
        tooltipTextEl.style({
            fill: fillColor,
            'font-size': config.fontSize + 'px'
        }).text(text);
        var padding = config.padding;
        var bbox = tooltipTextEl.node().getBBox();
        var boxStyle = {
            fill: config.color,
            stroke: strokeColor,
            'stroke-width': '2px'
        };
        var backGroundW = bbox.width + padding * 2 + tickSize;
        var backGroundH = bbox.height + padding * 2;
        backgroundEl.attr({
            d: 'M' + [ [ tickSize, -backGroundH / 2 ], [ tickSize, -backGroundH / 4 ], [ config.hasTick ? 0 : tickSize, 0 ], [ tickSize, backGroundH / 4 ], [ tickSize, backGroundH / 2 ], [ backGroundW, backGroundH / 2 ], [ backGroundW, -backGroundH / 2 ] ].join('L') + 'Z'
        }).style(boxStyle);
        tooltipEl.attr({
            transform: 'translate(' + [ tickSize, -backGroundH / 2 + padding * 2 ] + ')'
        });
        tooltipEl.style({
            display: 'block'
        });
        return exports;
    };
    exports.move = function(_pos) {
        if (!tooltipEl) return;
        tooltipEl.attr({
            transform: 'translate(' + [ _pos[0], _pos[1] ] + ')'
        }).style({
            display: 'block'
        });
        return exports;
    };
    exports.hide = function() {
        if (!tooltipEl) return;
        tooltipEl.style({
            display: 'none'
        });
        return exports;
    };
    exports.show = function() {
        if (!tooltipEl) return;
        tooltipEl.style({
            display: 'block'
        });
        return exports;
    };
    exports.config = function(_x) {
        extendDeepAll(config, _x);
        return exports;
    };
    return exports;
};

µ.tooltipPanel.uid = 1;

µ.adapter = {};

µ.adapter.plotly = function module() {
    var exports = {};
    exports.convert = function(_inputConfig, reverse) {
        var outputConfig = {};
        if (_inputConfig.data) {
            outputConfig.data = _inputConfig.data.map(function(d, i) {
                var r = extendDeepAll({}, d);
                var toTranslate = [
                    [ r, [ 'marker', 'color' ], [ 'color' ] ],
                    [ r, [ 'marker', 'opacity' ], [ 'opacity' ] ],
                    [ r, [ 'marker', 'line', 'color' ], [ 'strokeColor' ] ],
                    [ r, [ 'marker', 'line', 'dash' ], [ 'strokeDash' ] ],
                    [ r, [ 'marker', 'line', 'width' ], [ 'strokeSize' ] ],
                    [ r, [ 'marker', 'symbol' ], [ 'dotType' ] ],
                    [ r, [ 'marker', 'size' ], [ 'dotSize' ] ],
                    [ r, [ 'marker', 'barWidth' ], [ 'barWidth' ] ],
                    [ r, [ 'line', 'interpolation' ], [ 'lineInterpolation' ] ],
                    [ r, [ 'showlegend' ], [ 'visibleInLegend' ] ]
                ];
                toTranslate.forEach(function(d, i) {
                    µ.util.translator.apply(null, d.concat(reverse));
                });

                if (!reverse) delete r.marker;
                if (reverse) delete r.groupId;
                if (!reverse) {
                    if (r.type === 'scatter') {
                        if (r.mode === 'lines') r.geometry = 'LinePlot'; else if (r.mode === 'markers') r.geometry = 'DotPlot'; else if (r.mode === 'lines+markers') {
                            r.geometry = 'LinePlot';
                            r.dotVisible = true;
                        }
                    } else if (r.type === 'area') r.geometry = 'AreaChart'; else if (r.type === 'bar') r.geometry = 'BarChart';
                    delete r.mode;
                    delete r.type;
                } else {
                    if (r.geometry === 'LinePlot') {
                        r.type = 'scatter';
                        if (r.dotVisible === true) {
                            delete r.dotVisible;
                            r.mode = 'lines+markers';
                        } else r.mode = 'lines';
                    } else if (r.geometry === 'DotPlot') {
                        r.type = 'scatter';
                        r.mode = 'markers';
                    } else if (r.geometry === 'AreaChart') r.type = 'area'; else if (r.geometry === 'BarChart') r.type = 'bar';
                    delete r.geometry;
                }
                return r;
            });
            if (!reverse && _inputConfig.layout && _inputConfig.layout.barmode === 'stack') {
                var duplicates = µ.util.duplicates(outputConfig.data.map(function(d, i) {
                    return d.geometry;
                }));
                outputConfig.data.forEach(function(d, i) {
                    var idx = duplicates.indexOf(d.geometry);
                    if (idx != -1) outputConfig.data[i].groupId = idx;
                });
            }
        }
        if (_inputConfig.layout) {
            var r = extendDeepAll({}, _inputConfig.layout);
            var toTranslate = [
                [ r, [ 'plot_bgcolor' ], [ 'backgroundColor' ] ],
                [ r, [ 'showlegend' ], [ 'showLegend' ] ],
                [ r, [ 'radialaxis' ], [ 'radialAxis' ] ],
                [ r, [ 'angularaxis' ], [ 'angularAxis' ] ],
                [ r.angularaxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.angularaxis, [ 'showticklabels' ], [ 'labelsVisible' ] ],
                [ r.angularaxis, [ 'nticks' ], [ 'ticksCount' ] ],
                [ r.angularaxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.angularaxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.angularaxis, [ 'range' ], [ 'domain' ] ],
                [ r.angularaxis, [ 'endpadding' ], [ 'endPadding' ] ],
                [ r.radialaxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.radialaxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.radialaxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.radialaxis, [ 'range' ], [ 'domain' ] ],
                [ r.angularAxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.angularAxis, [ 'showticklabels' ], [ 'labelsVisible' ] ],
                [ r.angularAxis, [ 'nticks' ], [ 'ticksCount' ] ],
                [ r.angularAxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.angularAxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.angularAxis, [ 'range' ], [ 'domain' ] ],
                [ r.angularAxis, [ 'endpadding' ], [ 'endPadding' ] ],
                [ r.radialAxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.radialAxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.radialAxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.radialAxis, [ 'range' ], [ 'domain' ] ],
                [ r.font, [ 'outlinecolor' ], [ 'outlineColor' ] ],
                [ r.legend, [ 'traceorder' ], [ 'reverseOrder' ] ],
                [ r, [ 'labeloffset' ], [ 'labelOffset' ] ],
                [ r, [ 'defaultcolorrange' ], [ 'defaultColorRange' ] ]
            ];
            toTranslate.forEach(function(d, i) {
                µ.util.translator.apply(null, d.concat(reverse));
            });

            if (!reverse) {
                if (r.angularAxis && typeof r.angularAxis.ticklen !== 'undefined') r.tickLength = r.angularAxis.ticklen;
                if (r.angularAxis && typeof r.angularAxis.tickcolor !== 'undefined') r.tickColor = r.angularAxis.tickcolor;
            } else {
                if (typeof r.tickLength !== 'undefined') {
                    r.angularaxis.ticklen = r.tickLength;
                    delete r.tickLength;
                }
                if (r.tickColor) {
                    r.angularaxis.tickcolor = r.tickColor;
                    delete r.tickColor;
                }
            }
            if (r.legend && typeof r.legend.reverseOrder != 'boolean') {
                r.legend.reverseOrder = r.legend.reverseOrder != 'normal';
            }
            if (r.legend && typeof r.legend.traceorder == 'boolean') {
                r.legend.traceorder = r.legend.traceorder ? 'reversed' : 'normal';
                delete r.legend.reverseOrder;
            }
            if (r.margin && typeof r.margin.t != 'undefined') {
                var source = [ 't', 'r', 'b', 'l', 'pad' ];
                var target = [ 'top', 'right', 'bottom', 'left', 'pad' ];
                var margin = {};
                d3.entries(r.margin).forEach(function(dB, iB) {
                    margin[target[source.indexOf(dB.key)]] = dB.value;
                });
                r.margin = margin;
            }
            if (reverse) {
                delete r.needsEndSpacing;
                delete r.minorTickColor;
                delete r.minorTicks;
                delete r.angularaxis.ticksCount;
                delete r.angularaxis.ticksCount;
                delete r.angularaxis.ticksStep;
                delete r.angularaxis.rewriteTicks;
                delete r.angularaxis.nticks;
                delete r.radialaxis.ticksCount;
                delete r.radialaxis.ticksCount;
                delete r.radialaxis.ticksStep;
                delete r.radialaxis.rewriteTicks;
                delete r.radialaxis.nticks;
            }
            outputConfig.layout = r;
        }
        return outputConfig;
    };
    return exports;
};

},{"../../constants/alignment":330,"../../lib":353,"d3":62}],434:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

/* eslint-disable new-cap */

'use strict';

var d3 = require('d3');
var Lib = require('../../lib');
var Color = require('../../components/color');

var micropolar = require('./micropolar');
var UndoManager = require('./undo_manager');
var extendDeepAll = Lib.extendDeepAll;

var manager = module.exports = {};

manager.framework = function(_gd) {
    var config, previousConfigClone, plot, convertedInput, container;
    var undoManager = new UndoManager();

    function exports(_inputConfig, _container) {
        if(_container) container = _container;
        d3.select(d3.select(container).node().parentNode).selectAll('.svg-container>*:not(.chart-root)').remove();

        config = (!config) ?
            _inputConfig :
            extendDeepAll(config, _inputConfig);

        if(!plot) plot = micropolar.Axis();
        convertedInput = micropolar.adapter.plotly().convert(config);
        plot.config(convertedInput).render(container);
        _gd.data = config.data;
        _gd.layout = config.layout;
        manager.fillLayout(_gd);
        return config;
    }
    exports.isPolar = true;
    exports.svg = function() { return plot.svg(); };
    exports.getConfig = function() { return config; };
    exports.getLiveConfig = function() {
        return micropolar.adapter.plotly().convert(plot.getLiveConfig(), true);
    };
    exports.getLiveScales = function() { return {t: plot.angularScale(), r: plot.radialScale()}; };
    exports.setUndoPoint = function() {
        var that = this;
        var configClone = micropolar.util.cloneJson(config);
        (function(_configClone, _previousConfigClone) {
            undoManager.add({
                undo: function() {
                    if(_previousConfigClone) that(_previousConfigClone);
                },
                redo: function() {
                    that(_configClone);
                }
            });
        })(configClone, previousConfigClone);
        previousConfigClone = micropolar.util.cloneJson(configClone);
    };
    exports.undo = function() { undoManager.undo(); };
    exports.redo = function() { undoManager.redo(); };
    return exports;
};

manager.fillLayout = function(_gd) {
    var container = d3.select(_gd).selectAll('.plot-container'),
        paperDiv = container.selectAll('.svg-container'),
        paper = _gd.framework && _gd.framework.svg && _gd.framework.svg(),
        dflts = {
            width: 800,
            height: 600,
            paper_bgcolor: Color.background,
            _container: container,
            _paperdiv: paperDiv,
            _paper: paper
        };

    _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
};

},{"../../components/color":233,"../../lib":353,"./micropolar":433,"./undo_manager":435,"d3":62}],435:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// Modified from https://github.com/ArthurClemens/Javascript-Undo-Manager
// Copyright (c) 2010-2013 Arthur Clemens, arthur@visiblearea.com
module.exports = function UndoManager() {
    var undoCommands = [],
        index = -1,
        isExecuting = false,
        callback;

    function execute(command, action) {
        if(!command) return this;

        isExecuting = true;
        command[action]();
        isExecuting = false;

        return this;
    }

    return {
        add: function(command) {
            if(isExecuting) return this;
            undoCommands.splice(index + 1, undoCommands.length - index);
            undoCommands.push(command);
            index = undoCommands.length - 1;
            return this;
        },
        setCallback: function(callbackFunc) { callback = callbackFunc; },
        undo: function() {
            var command = undoCommands[index];
            if(!command) return this;
            execute(command, 'undo');
            index -= 1;
            if(callback) callback(command.undo);
            return this;
        },
        redo: function() {
            var command = undoCommands[index + 1];
            if(!command) return this;
            execute(command, 'redo');
            index += 1;
            if(callback) callback(command.redo);
            return this;
        },
        clear: function() {
            undoCommands = [];
            index = -1;
        },
        hasUndo: function() { return index !== -1; },
        hasRedo: function() { return index < (undoCommands.length - 1); },
        getCommands: function() { return undoCommands; },
        getPreviousCommand: function() { return undoCommands[index - 1]; },
        getIndex: function() { return index; }
    };
};

},{}],436:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Loggers = require('./lib/loggers');
var noop = require('./lib/noop');
var pushUnique = require('./lib/push_unique');
var ExtendModule = require('./lib/extend');
var extendFlat = ExtendModule.extendFlat;
var extendDeepAll = ExtendModule.extendDeepAll;

var basePlotAttributes = require('./plots/attributes');
var baseLayoutAttributes = require('./plots/layout_attributes');

exports.modules = {};
exports.allCategories = {};
exports.allTypes = [];
exports.subplotsRegistry = {};
exports.transformsRegistry = {};
exports.componentsRegistry = {};
exports.layoutArrayContainers = [];
exports.layoutArrayRegexes = [];
exports.traceLayoutAttributes = {};

/**
 * register a module as the handler for a trace type
 *
 * @param {object} _module the module that will handle plotting this trace type
 * @param {string} thisType
 * @param {array of strings} categoriesIn all the categories this type is in,
 *     tested by calls: traceIs(trace, oneCategory)
 * @param {object} meta meta information about the trace type
 */
exports.register = function(_module, thisType, categoriesIn, meta) {
    if(exports.modules[thisType]) {
        Loggers.log('Type ' + thisType + ' already registered');
        return;
    }

    var categoryObj = {};
    for(var i = 0; i < categoriesIn.length; i++) {
        categoryObj[categoriesIn[i]] = true;
        exports.allCategories[categoriesIn[i]] = true;
    }

    exports.modules[thisType] = {
        _module: _module,
        categories: categoryObj
    };

    if(meta && Object.keys(meta).length) {
        exports.modules[thisType].meta = meta;
    }

    exports.allTypes.push(thisType);

    for(var componentName in exports.componentsRegistry) {
        mergeComponentAttrsToTrace(componentName, thisType);
    }

    /*
     * Collect all trace layout attributes in one place for easier lookup later
     * but don't merge them into the base schema as it would confuse the docs
     * (at least after https://github.com/plotly/documentation/issues/202 gets done!)
     */
    if(_module.layoutAttributes) {
        extendFlat(exports.traceLayoutAttributes, _module.layoutAttributes);
    }
};

/**
 * register a subplot type
 *
 * @param {object} _module subplot module:
 *
 *      @param {string or array of strings} attr
 *          attribute name in traces and layout
 *      @param {string or array of strings} idRoot
 *          root of id (setting the possible value for attrName)
 *      @param {object} attributes
 *          attribute(s) for traces of this subplot type
 *
 * In trace objects `attr` is the object key taking a valid `id` as value
 * (the set of all valid ids is generated below and stored in idRegex).
 *
 * In the layout object, a or several valid `attr` name(s) can be keys linked
 * to a nested attribute objects
 * (the set of all valid attr names is generated below and stored in attrRegex).
 */
exports.registerSubplot = function(_module) {
    var plotType = _module.name;

    if(exports.subplotsRegistry[plotType]) {
        Loggers.log('Plot type ' + plotType + ' already registered.');
        return;
    }

    // relayout array handling will look for component module methods with this
    // name and won't find them because this is a subplot module... but that
    // should be fine, it will just fall back on redrawing the plot.
    findArrayRegexps(_module);

    // not sure what's best for the 'cartesian' type at this point
    exports.subplotsRegistry[plotType] = _module;

    for(var componentName in exports.componentsRegistry) {
        mergeComponentAttrsToSubplot(componentName, _module.name);
    }
};

exports.registerComponent = function(_module) {
    var name = _module.name;

    exports.componentsRegistry[name] = _module;

    if(_module.layoutAttributes) {
        if(_module.layoutAttributes._isLinkedToArray) {
            pushUnique(exports.layoutArrayContainers, name);
        }
        findArrayRegexps(_module);
    }

    for(var traceType in exports.modules) {
        mergeComponentAttrsToTrace(name, traceType);
    }

    for(var subplotName in exports.subplotsRegistry) {
        mergeComponentAttrsToSubplot(name, subplotName);
    }

    for(var transformType in exports.transformsRegistry) {
        mergeComponentAttrsToTransform(name, transformType);
    }

    if(_module.schema && _module.schema.layout) {
        extendDeepAll(baseLayoutAttributes, _module.schema.layout);
    }
};

exports.registerTransform = function(_module) {
    exports.transformsRegistry[_module.name] = _module;

    for(var componentName in exports.componentsRegistry) {
        mergeComponentAttrsToTransform(componentName, _module.name);
    }
};

function findArrayRegexps(_module) {
    if(_module.layoutAttributes) {
        var arrayAttrRegexps = _module.layoutAttributes._arrayAttrRegexps;
        if(arrayAttrRegexps) {
            for(var i = 0; i < arrayAttrRegexps.length; i++) {
                pushUnique(exports.layoutArrayRegexes, arrayAttrRegexps[i]);
            }
        }
    }
}

function mergeComponentAttrsToTrace(componentName, traceType) {
    var componentSchema = exports.componentsRegistry[componentName].schema;
    if(!componentSchema || !componentSchema.traces) return;

    var traceAttrs = componentSchema.traces[traceType];
    if(traceAttrs) {
        extendDeepAll(exports.modules[traceType]._module.attributes, traceAttrs);
    }
}

function mergeComponentAttrsToTransform(componentName, transformType) {
    var componentSchema = exports.componentsRegistry[componentName].schema;
    if(!componentSchema || !componentSchema.transforms) return;

    var transformAttrs = componentSchema.transforms[transformType];
    if(transformAttrs) {
        extendDeepAll(exports.transformsRegistry[transformType].attributes, transformAttrs);
    }
}

function mergeComponentAttrsToSubplot(componentName, subplotName) {
    var componentSchema = exports.componentsRegistry[componentName].schema;
    if(!componentSchema || !componentSchema.subplots) return;

    var subplotModule = exports.subplotsRegistry[subplotName];
    var subplotAttrs = subplotModule.layoutAttributes;
    var subplotAttr = subplotModule.attr === 'subplot' ? subplotModule.name : subplotModule.attr;
    if(Array.isArray(subplotAttr)) subplotAttr = subplotAttr[0];

    var componentLayoutAttrs = componentSchema.subplots[subplotAttr];
    if(subplotAttrs && componentLayoutAttrs) {
        extendDeepAll(subplotAttrs, componentLayoutAttrs);
    }
}

/**
 * Get registered module using trace object or trace type
 *
 * @param {object||string} trace
 *  trace object with prop 'type' or trace type as a string
 * @return {object}
 *  module object corresponding to trace type
 */
exports.getModule = function(trace) {
    if(trace.r !== undefined) {
        Loggers.warn('Tried to put a polar trace ' +
            'on an incompatible graph of cartesian ' +
            'data. Ignoring this dataset.', trace
        );
        return false;
    }

    var _module = exports.modules[getTraceType(trace)];
    if(!_module) return false;
    return _module._module;
};

/**
 * Determine if this trace type is in a given category
 *
 * @param {object||string} traceType
 *  a trace (object) or trace type (string)
 * @param {string} category
 *  category in question
 * @return {boolean}
 */
exports.traceIs = function(traceType, category) {
    traceType = getTraceType(traceType);

    // old plot.ly workspace hack, nothing to see here
    if(traceType === 'various') return false;

    var _module = exports.modules[traceType];

    if(!_module) {
        if(traceType && traceType !== 'area') {
            Loggers.log('Unrecognized trace type ' + traceType + '.');
        }

        _module = exports.modules[basePlotAttributes.type.dflt];
    }

    return !!_module.categories[category];
};

/**
 * Determine if this trace has a transform of the given type and return
 * array of matching indices.
 *
 * @param {object} data
 *  a trace object (member of data or fullData)
 * @param {string} type
 *  type of trace to test
 * @return {array}
 *  array of matching indices. If none found, returns []
 */
exports.getTransformIndices = function(data, type) {
    var indices = [];
    var transforms = data.transforms || [];
    for(var i = 0; i < transforms.length; i++) {
        if(transforms[i].type === type) {
            indices.push(i);
        }
    }
    return indices;
};

/**
 * Determine if this trace has a transform of the given type
 *
 * @param {object} data
 *  a trace object (member of data or fullData)
 * @param {string} type
 *  type of trace to test
 * @return {boolean}
 */
exports.hasTransform = function(data, type) {
    var transforms = data.transforms || [];
    for(var i = 0; i < transforms.length; i++) {
        if(transforms[i].type === type) {
            return true;
        }
    }
    return false;

};

/**
 * Retrieve component module method. Falls back on noop if either the
 * module or the method is missing, so the result can always be safely called
 *
 * @param {string} name
 *  name of component (as declared in component module)
 * @param {string} method
 *  name of component module method
 * @return {function}
 */
exports.getComponentMethod = function(name, method) {
    var _module = exports.componentsRegistry[name];

    if(!_module) return noop;
    return _module[method] || noop;
};

function getTraceType(traceType) {
    if(typeof traceType === 'object') traceType = traceType.type;
    return traceType;
}

},{"./lib/extend":344,"./lib/loggers":357,"./lib/noop":361,"./lib/push_unique":365,"./plots/attributes":394,"./plots/layout_attributes":427}],437:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../lib');
var Plots = require('../plots/plots');

var extendFlat = Lib.extendFlat;
var extendDeep = Lib.extendDeep;

// Put default plotTile layouts here
function cloneLayoutOverride(tileClass) {
    var override;

    switch(tileClass) {
        case 'themes__thumb':
            override = {
                autosize: true,
                width: 150,
                height: 150,
                title: '',
                showlegend: false,
                margin: {l: 5, r: 5, t: 5, b: 5, pad: 0},
                annotations: []
            };
            break;

        case 'thumbnail':
            override = {
                title: '',
                hidesources: true,
                showlegend: false,
                borderwidth: 0,
                bordercolor: '',
                margin: {l: 1, r: 1, t: 1, b: 1, pad: 0},
                annotations: []
            };
            break;

        default:
            override = {};
    }


    return override;
}

function keyIsAxis(keyName) {
    var types = ['xaxis', 'yaxis', 'zaxis'];
    return (types.indexOf(keyName.slice(0, 5)) > -1);
}


module.exports = function clonePlot(graphObj, options) {

    // Polar plot compatibility
    if(graphObj.framework && graphObj.framework.isPolar) {
        graphObj = graphObj.framework.getConfig();
    }

    var i;
    var oldData = graphObj.data;
    var oldLayout = graphObj.layout;
    var newData = extendDeep([], oldData);
    var newLayout = extendDeep({}, oldLayout, cloneLayoutOverride(options.tileClass));
    var context = graphObj._context || {};

    if(options.width) newLayout.width = options.width;
    if(options.height) newLayout.height = options.height;

    if(options.tileClass === 'thumbnail' || options.tileClass === 'themes__thumb') {
        // kill annotations
        newLayout.annotations = [];
        var keys = Object.keys(newLayout);

        for(i = 0; i < keys.length; i++) {
            if(keyIsAxis(keys[i])) {
                newLayout[keys[i]].title = '';
            }
        }

        // kill colorbar and pie labels
        for(i = 0; i < newData.length; i++) {
            var trace = newData[i];
            trace.showscale = false;
            if(trace.marker) trace.marker.showscale = false;
            if(trace.type === 'pie') trace.textposition = 'none';
        }
    }

    if(Array.isArray(options.annotations)) {
        for(i = 0; i < options.annotations.length; i++) {
            newLayout.annotations.push(options.annotations[i]);
        }
    }

    var sceneIds = Plots.getSubplotIds(newLayout, 'gl3d');

    if(sceneIds.length) {
        var axesImageOverride = {};
        if(options.tileClass === 'thumbnail') {
            axesImageOverride = {
                title: '',
                showaxeslabels: false,
                showticklabels: false,
                linetickenable: false
            };
        }
        for(i = 0; i < sceneIds.length; i++) {
            var scene = newLayout[sceneIds[i]];

            if(!scene.xaxis) {
                scene.xaxis = {};
            }

            if(!scene.yaxis) {
                scene.yaxis = {};
            }

            if(!scene.zaxis) {
                scene.zaxis = {};
            }

            extendFlat(scene.xaxis, axesImageOverride);
            extendFlat(scene.yaxis, axesImageOverride);
            extendFlat(scene.zaxis, axesImageOverride);

            // TODO what does this do?
            scene._scene = null;
        }
    }

    var gd = document.createElement('div');
    if(options.tileClass) gd.className = options.tileClass;

    var plotTile = {
        gd: gd,
        td: gd, // for external (image server) compatibility
        layout: newLayout,
        data: newData,
        config: {
            staticPlot: (options.staticPlot === undefined) ?
                true :
                options.staticPlot,
            plotGlPixelRatio: (options.plotGlPixelRatio === undefined) ?
                2 :
                options.plotGlPixelRatio,
            displaylogo: options.displaylogo || false,
            showLink: options.showLink || false,
            showTips: options.showTips || false,
            mapboxAccessToken: context.mapboxAccessToken
        }
    };

    if(options.setBackground !== 'transparent') {
        plotTile.config.setBackground = options.setBackground || 'opaque';
    }

    // attaching the default Layout the gd, so you can grab it later
    plotTile.gd.defaultLayout = cloneLayoutOverride(options.tileClass);

    return plotTile;
};

},{"../lib":353,"../plots/plots":429}],438:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var toImage = require('../plot_api/to_image');
var Lib = require('../lib'); // for isIE
var fileSaver = require('./filesaver');

/**
 * @param {object} gd figure Object
 * @param {object} opts option object
 * @param opts.format 'jpeg' | 'png' | 'webp' | 'svg'
 * @param opts.width width of snapshot in px
 * @param opts.height height of snapshot in px
 * @param opts.filename name of file excluding extension
 */
function downloadImage(gd, opts) {

    // check for undefined opts
    opts = opts || {};

    // default to png
    opts.format = opts.format || 'png';

    return new Promise(function(resolve, reject) {
        if(gd._snapshotInProgress) {
            reject(new Error('Snapshotting already in progress.'));
        }

        // see comments within svgtoimg for additional
        //   discussion of problems with IE
        //   can now draw to canvas, but CORS tainted canvas
        //   does not allow toDataURL
        //   svg format will work though
        if(Lib.isIE() && opts.format !== 'svg') {
            reject(new Error('Sorry IE does not support downloading from canvas. Try {format:\'svg\'} instead.'));
        }

        gd._snapshotInProgress = true;
        var promise = toImage(gd, opts);

        var filename = opts.filename || gd.fn || 'newplot';
        filename += '.' + opts.format;

        promise.then(function(result) {
            gd._snapshotInProgress = false;
            return fileSaver(result, filename);
        }).then(function(name) {
            resolve(name);
        }).catch(function(err) {
            gd._snapshotInProgress = false;
            reject(err);
        });
    });
}

module.exports = downloadImage;

},{"../lib":353,"../plot_api/to_image":389,"./filesaver":439}],439:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

/*
* substantial portions of this code from FileSaver.js
* https://github.com/eligrey/FileSaver.js
* License: https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
* FileSaver.js
* A saveAs() FileSaver implementation.
* 1.1.20160328
*
* By Eli Grey, http://eligrey.com
* License: MIT
*   See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
*/

'use strict';

var fileSaver = function(url, name) {
    var saveLink = document.createElement('a');
    var canUseSaveLink = 'download' in saveLink;
    var isSafari = /Version\/[\d\.]+.*Safari/.test(navigator.userAgent);
    var promise = new Promise(function(resolve, reject) {
        // IE <10 is explicitly unsupported
        if(typeof navigator !== 'undefined' && /MSIE [1-9]\./.test(navigator.userAgent)) {
            reject(new Error('IE < 10 unsupported'));
        }

        // First try a.download, then web filesystem, then object URLs
        if(isSafari) {
            // Safari doesn't allow downloading of blob urls
            document.location.href = 'data:application/octet-stream' + url.slice(url.search(/[,;]/));
            resolve(name);
        }

        if(!name) {
            name = 'download';
        }

        if(canUseSaveLink) {
            saveLink.href = url;
            saveLink.download = name;
            document.body.appendChild(saveLink);
            saveLink.click();
            document.body.removeChild(saveLink);
            resolve(name);
        }

        // IE 10+ (native saveAs)
        if(typeof navigator !== 'undefined' && navigator.msSaveBlob) {
            // At this point we are only dealing with a SVG encoded as
            // a data URL (since IE only supports SVG)
            var encoded = url.split(/^data:image\/svg\+xml,/)[1];
            var svg = decodeURIComponent(encoded);
            navigator.msSaveBlob(new Blob([svg]), name);
            resolve(name);
        }

        reject(new Error('download error'));
    });

    return promise;
};

module.exports = fileSaver;

},{}],440:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.getDelay = function(fullLayout) {

    // polar clears fullLayout._has for some reason
    if(!fullLayout._has) return 0;

    // maybe we should add a 'gl' (and 'svg') layoutCategory ??
    return (fullLayout._has('gl3d') || fullLayout._has('gl2d')) ? 500 : 0;
};

exports.getRedrawFunc = function(gd) {

    // do not work if polar is present
    if((gd.data && gd.data[0] && gd.data[0].r)) return;

    return function() {
        (gd.calcdata || []).forEach(function(d) {
            if(d[0] && d[0].t && d[0].t.cb) d[0].t.cb();
        });
    };
};

},{}],441:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var helpers = require('./helpers');

var Snapshot = {
    getDelay: helpers.getDelay,
    getRedrawFunc: helpers.getRedrawFunc,
    clone: require('./cloneplot'),
    toSVG: require('./tosvg'),
    svgToImg: require('./svgtoimg'),
    toImage: require('./toimage'),
    downloadImage: require('./download')
};

module.exports = Snapshot;

},{"./cloneplot":437,"./download":438,"./helpers":440,"./svgtoimg":442,"./toimage":443,"./tosvg":444}],442:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');
var EventEmitter = require('events').EventEmitter;

function svgToImg(opts) {
    var ev = opts.emitter || new EventEmitter();

    var promise = new Promise(function(resolve, reject) {
        var Image = window.Image;
        var svg = opts.svg;
        var format = opts.format || 'png';

        // IE only support svg
        if(Lib.isIE() && format !== 'svg') {
            var ieSvgError = new Error('Sorry IE does not support downloading from canvas. Try {format:\'svg\'} instead.');
            reject(ieSvgError);
            // eventually remove the ev
            //  in favor of promises
            if(!opts.promise) {
                return ev.emit('error', ieSvgError);
            } else {
                return promise;
            }
        }

        var canvas = opts.canvas;
        var scale = opts.scale || 1;
        var w0 = opts.width || 300;
        var h0 = opts.height || 150;
        var w1 = scale * w0;
        var h1 = scale * h0;

        var ctx = canvas.getContext('2d');
        var img = new Image();

        // for Safari support, eliminate createObjectURL
        //  this decision could cause problems if content
        //  is not restricted to svg
        var url = 'data:image/svg+xml,' + encodeURIComponent(svg);

        canvas.width = w1;
        canvas.height = h1;

        img.onload = function() {
            var imgData;

            // don't need to draw to canvas if svg
            //  save some time and also avoid failure on IE
            if(format !== 'svg') {
                ctx.drawImage(img, 0, 0, w1, h1);
            }

            switch(format) {
                case 'jpeg':
                    imgData = canvas.toDataURL('image/jpeg');
                    break;
                case 'png':
                    imgData = canvas.toDataURL('image/png');
                    break;
                case 'webp':
                    imgData = canvas.toDataURL('image/webp');
                    break;
                case 'svg':
                    imgData = url;
                    break;
                default:
                    var errorMsg = 'Image format is not jpeg, png, svg or webp.';
                    reject(new Error(errorMsg));
                    // eventually remove the ev
                    //  in favor of promises
                    if(!opts.promise) {
                        return ev.emit('error', errorMsg);
                    }
            }
            resolve(imgData);
            // eventually remove the ev
            //  in favor of promises
            if(!opts.promise) {
                ev.emit('success', imgData);
            }
        };

        img.onerror = function(err) {
            reject(err);
            // eventually remove the ev
            //  in favor of promises
            if(!opts.promise) {
                return ev.emit('error', err);
            }
        };

        img.src = url;
    });

    // temporary for backward compatibility
    //  move to only Promise in 2.0.0
    //  and eliminate the EventEmitter
    if(opts.promise) {
        return promise;
    }

    return ev;
}

module.exports = svgToImg;

},{"../lib":353,"events":67}],443:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var EventEmitter = require('events').EventEmitter;

var Plotly = require('../plotly');
var Lib = require('../lib');

var helpers = require('./helpers');
var clonePlot = require('./cloneplot');
var toSVG = require('./tosvg');
var svgToImg = require('./svgtoimg');


/**
 * @param {object} gd figure Object
 * @param {object} opts option object
 * @param opts.format 'jpeg' | 'png' | 'webp' | 'svg'
 */
function toImage(gd, opts) {

    // first clone the GD so we can operate in a clean environment
    var ev = new EventEmitter();

    var clone = clonePlot(gd, {format: 'png'});
    var clonedGd = clone.gd;

    // put the cloned div somewhere off screen before attaching to DOM
    clonedGd.style.position = 'absolute';
    clonedGd.style.left = '-5000px';
    document.body.appendChild(clonedGd);

    function wait() {
        var delay = helpers.getDelay(clonedGd._fullLayout);

        setTimeout(function() {
            var svg = toSVG(clonedGd);

            var canvas = document.createElement('canvas');
            canvas.id = Lib.randstr();

            ev = svgToImg({
                format: opts.format,
                width: clonedGd._fullLayout.width,
                height: clonedGd._fullLayout.height,
                canvas: canvas,
                emitter: ev,
                svg: svg
            });

            ev.clean = function() {
                if(clonedGd) document.body.removeChild(clonedGd);
            };

        }, delay);
    }

    var redrawFunc = helpers.getRedrawFunc(clonedGd);

    Plotly.plot(clonedGd, clone.data, clone.layout, clone.config)
        .then(redrawFunc)
        .then(wait)
        .catch(function(err) {
            ev.emit('error', err);
        });


    return ev;
}

module.exports = toImage;

},{"../lib":353,"../plotly":391,"./cloneplot":437,"./helpers":440,"./svgtoimg":442,"./tosvg":444,"events":67}],444:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Lib = require('../lib');
var Drawing = require('../components/drawing');
var Color = require('../components/color');

var xmlnsNamespaces = require('../constants/xmlns_namespaces');
var DOUBLEQUOTE_REGEX = /"/g;
var DUMMY_SUB = 'TOBESTRIPPED';
var DUMMY_REGEX = new RegExp('("' + DUMMY_SUB + ')|(' + DUMMY_SUB + '")', 'g');

function htmlEntityDecode(s) {
    var hiddenDiv = d3.select('body').append('div').style({display: 'none'}).html('');
    var replaced = s.replace(/(&[^;]*;)/gi, function(d) {
        if(d === '&lt;') { return '&#60;'; } // special handling for brackets
        if(d === '&rt;') { return '&#62;'; }
        if(d.indexOf('<') !== -1 || d.indexOf('>') !== -1) { return ''; }
        return hiddenDiv.html(d).text(); // everything else, let the browser decode it to unicode
    });
    hiddenDiv.remove();
    return replaced;
}

function xmlEntityEncode(str) {
    return str.replace(/&(?!\w+;|\#[0-9]+;| \#x[0-9A-F]+;)/g, '&amp;');
}

module.exports = function toSVG(gd, format, scale) {
    var fullLayout = gd._fullLayout;
    var svg = fullLayout._paper;
    var toppaper = fullLayout._toppaper;
    var width = fullLayout.width;
    var height = fullLayout.height;
    var i;

    // make background color a rect in the svg, then revert after scraping
    // all other alterations have been dealt with by properly preparing the svg
    // in the first place... like setting cursors with css classes so we don't
    // have to remove them, and providing the right namespaces in the svg to
    // begin with
    svg.insert('rect', ':first-child')
        .call(Drawing.setRect, 0, 0, width, height)
        .call(Color.fill, fullLayout.paper_bgcolor);

    // subplot-specific to-SVG methods
    // which notably add the contents of the gl-container
    // into the main svg node
    var basePlotModules = fullLayout._basePlotModules || [];
    for(i = 0; i < basePlotModules.length; i++) {
        var _module = basePlotModules[i];

        if(_module.toSVG) _module.toSVG(gd);
    }

    // add top items above them assumes everything in toppaper is either
    // a group or a defs, and if it's empty (like hoverlayer) we can ignore it.
    if(toppaper) {
        var nodes = toppaper.node().childNodes;

        // make copy of nodes as childNodes prop gets mutated in loop below
        var topGroups = Array.prototype.slice.call(nodes);

        for(i = 0; i < topGroups.length; i++) {
            var topGroup = topGroups[i];

            if(topGroup.childNodes.length) svg.node().appendChild(topGroup);
        }
    }

    // remove draglayer for Adobe Illustrator compatibility
    if(fullLayout._draggers) {
        fullLayout._draggers.remove();
    }

    // in case the svg element had an explicit background color, remove this
    // we want the rect to get the color so it's the right size; svg bg will
    // fill whatever container it's displayed in regardless of plot size.
    svg.node().style.background = '';

    svg.selectAll('text')
        .attr({'data-unformatted': null, 'data-math': null})
        .each(function() {
            var txt = d3.select(this);

            // hidden text is pre-formatting mathjax, the browser ignores it
            // but in a static plot it's useless and it can confuse batik
            // we've tried to standardize on display:none but make sure we still
            // catch visibility:hidden if it ever arises
            if(this.style.visibility === 'hidden' || this.style.display === 'none') {
                txt.remove();
                return;
            }
            else {
                // clear other visibility/display values to default
                // to not potentially confuse non-browser SVG implementations
                txt.style({visibility: null, display: null});
            }

            // Font family styles break things because of quotation marks,
            // so we must remove them *after* the SVG DOM has been serialized
            // to a string (browsers convert singles back)
            var ff = this.style.fontFamily;
            if(ff && ff.indexOf('"') !== -1) {
                txt.style('font-family', ff.replace(DOUBLEQUOTE_REGEX, DUMMY_SUB));
            }
        });

    svg.selectAll('.point,.scatterpts').each(function() {
        var pt = d3.select(this);
        var fill = this.style.fill;

        // similar to font family styles above,
        // we must remove " after the SVG DOM has been serialized
        if(fill && fill.indexOf('url(') !== -1) {
            pt.style('fill', fill.replace(DOUBLEQUOTE_REGEX, DUMMY_SUB));
        }
    });

    if(format === 'pdf' || format === 'eps') {
        // these formats make the extra line MathJax adds around symbols look super thick in some cases
        // it looks better if this is removed entirely.
        svg.selectAll('#MathJax_SVG_glyphs path')
            .attr('stroke-width', 0);
    }

    // fix for IE namespacing quirk?
    // http://stackoverflow.com/questions/19610089/unwanted-namespaces-on-svg-markup-when-using-xmlserializer-in-javascript-with-ie
    svg.node().setAttributeNS(xmlnsNamespaces.xmlns, 'xmlns', xmlnsNamespaces.svg);
    svg.node().setAttributeNS(xmlnsNamespaces.xmlns, 'xmlns:xlink', xmlnsNamespaces.xlink);

    if(format === 'svg' && scale) {
        svg.attr('width', scale * width);
        svg.attr('height', scale * height);
        svg.attr('viewBox', '0 0 ' + width + ' ' + height);
    }

    var s = new window.XMLSerializer().serializeToString(svg.node());
    s = htmlEntityDecode(s);
    s = xmlEntityEncode(s);

    // Fix quotations around font strings and gradient URLs
    s = s.replace(DUMMY_REGEX, '\'');

    // IE is very strict, so we will need to clean
    //  svg with the following regex
    //  yes this is messy, but do not know a better way
    // Even with this IE will not work due to tainted canvas
    //  see https://github.com/kangax/fabric.js/issues/1957
    //      http://stackoverflow.com/questions/18112047/canvas-todataurl-working-in-all-browsers-except-ie10
    // Leave here just in case the CORS/tainted IE issue gets resolved
    if(Lib.isIE()) {
        // replace double quote with single quote
        s = s.replace(/"/gi, '\'');
        // url in svg are single quoted
        //   since we changed double to single
        //   we'll need to change these to double-quoted
        s = s.replace(/(\('#)([^']*)('\))/gi, '(\"#$2\")');
        // font names with spaces will be escaped single-quoted
        //   we'll need to change these to double-quoted
        s = s.replace(/(\\')/gi, '\"');
    }

    return s;
};

},{"../components/color":233,"../components/drawing":257,"../constants/xmlns_namespaces":336,"../lib":353,"d3":62}],445:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var heatmapAttrs = require('../heatmap/attributes');
var scatterAttrs = require('../scatter/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var dash = require('../../components/drawing/attributes').dash;
var fontAttrs = require('../../plots/font_attributes');
var extendFlat = require('../../lib/extend').extendFlat;

var scatterLineAttrs = scatterAttrs.line;

module.exports = extendFlat({
    z: heatmapAttrs.z,
    x: heatmapAttrs.x,
    x0: heatmapAttrs.x0,
    dx: heatmapAttrs.dx,
    y: heatmapAttrs.y,
    y0: heatmapAttrs.y0,
    dy: heatmapAttrs.dy,
    text: heatmapAttrs.text,
    transpose: heatmapAttrs.transpose,
    xtype: heatmapAttrs.xtype,
    ytype: heatmapAttrs.ytype,

    connectgaps: heatmapAttrs.connectgaps,

    autocontour: {
        valType: 'boolean',
        dflt: true,
        
        editType: 'calc',
        impliedEdits: {
            'contours.start': undefined,
            'contours.end': undefined,
            'contours.size': undefined
        },
        
    },
    ncontours: {
        valType: 'integer',
        dflt: 15,
        min: 1,
        
        editType: 'calc',
        
    },

    contours: {
        start: {
            valType: 'number',
            dflt: null,
            
            editType: 'plot',
            impliedEdits: {'^autocontour': false},
            
        },
        end: {
            valType: 'number',
            dflt: null,
            
            editType: 'plot',
            impliedEdits: {'^autocontour': false},
            
        },
        size: {
            valType: 'number',
            dflt: null,
            min: 0,
            
            editType: 'plot',
            impliedEdits: {'^autocontour': false},
            
        },
        coloring: {
            valType: 'enumerated',
            values: ['fill', 'heatmap', 'lines', 'none'],
            dflt: 'fill',
            
            editType: 'calc',
            
        },
        showlines: {
            valType: 'boolean',
            dflt: true,
            
            editType: 'plot',
            
        },
        showlabels: {
            valType: 'boolean',
            dflt: false,
            
            editType: 'plot',
            
        },
        labelfont: fontAttrs({
            editType: 'plot',
            colorEditType: 'style',
            
        }),
        labelformat: {
            valType: 'string',
            dflt: '',
            
            editType: 'plot',
            
        },
        editType: 'calc',
        impliedEdits: {'autocontour': false}
    },

    line: {
        color: extendFlat({}, scatterLineAttrs.color, {
            editType: 'style+colorbars',
            
        }),
        width: extendFlat({}, scatterLineAttrs.width, {
            editType: 'style+colorbars'
        }),
        dash: dash,
        smoothing: extendFlat({}, scatterLineAttrs.smoothing, {
            
        }),
        editType: 'plot'
    }
},
    colorscaleAttrs, {
        autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}),
        zmin: extendFlat({}, colorscaleAttrs.zmin, {editType: 'calc'}),
        zmax: extendFlat({}, colorscaleAttrs.zmax, {editType: 'calc'})
    },
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":234,"../../components/colorscale/attributes":238,"../../components/drawing/attributes":256,"../../lib/extend":344,"../../plots/font_attributes":420,"../heatmap/attributes":455,"../scatter/attributes":491}],446:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Axes = require('../../plots/cartesian/axes');
var extendFlat = require('../../lib').extendFlat;
var heatmapCalc = require('../heatmap/calc');


// most is the same as heatmap calc, then adjust it
// though a few things inside heatmap calc still look for
// contour maps, because the makeBoundArray calls are too entangled
module.exports = function calc(gd, trace) {
    var cd = heatmapCalc(gd, trace),
        contours = trace.contours;

    // check if we need to auto-choose contour levels
    if(trace.autocontour !== false) {
        var dummyAx = autoContours(trace.zmin, trace.zmax, trace.ncontours);

        contours.size = dummyAx.dtick;

        contours.start = Axes.tickFirst(dummyAx);
        dummyAx.range.reverse();
        contours.end = Axes.tickFirst(dummyAx);

        if(contours.start === trace.zmin) contours.start += contours.size;
        if(contours.end === trace.zmax) contours.end -= contours.size;

        // if you set a small ncontours, *and* the ends are exactly on zmin/zmax
        // there's an edge case where start > end now. Make sure there's at least
        // one meaningful contour, put it midway between the crossed values
        if(contours.start > contours.end) {
            contours.start = contours.end = (contours.start + contours.end) / 2;
        }

        // copy auto-contour info back to the source data.
        // previously we copied the whole contours object back, but that had
        // other info (coloring, showlines) that should be left to supplyDefaults
        if(!trace._input.contours) trace._input.contours = {};
        extendFlat(trace._input.contours, {
            start: contours.start,
            end: contours.end,
            size: contours.size
        });
        trace._input.autocontour = true;
    }
    else {
        // sanity checks on manually-supplied start/end/size
        var start = contours.start,
            end = contours.end,
            inputContours = trace._input.contours;

        if(start > end) {
            contours.start = inputContours.start = end;
            end = contours.end = inputContours.end = start;
            start = contours.start;
        }

        if(!(contours.size > 0)) {
            var sizeOut;
            if(start === end) sizeOut = 1;
            else sizeOut = autoContours(start, end, trace.ncontours).dtick;

            inputContours.size = contours.size = sizeOut;
        }
    }

    return cd;
};

/*
 * autoContours: make a dummy axis object with dtick we can use
 * as contours.size, and if needed we can use Axes.tickFirst
 * with this axis object to calculate the start and end too
 *
 * start: the value to start the contours at
 * end: the value to end at (must be > start)
 * ncontours: max number of contours to make, like roughDTick
 *
 * returns: an axis object
 */
function autoContours(start, end, ncontours) {
    var dummyAx = {
        type: 'linear',
        range: [start, end]
    };

    Axes.autoTicks(
        dummyAx,
        (end - start) / (ncontours || 15)
    );

    return dummyAx;
}

},{"../../lib":353,"../../plots/cartesian/axes":396,"../heatmap/calc":456}],447:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plots = require('../../plots/plots');
var drawColorbar = require('../../components/colorbar/draw');

var makeColorMap = require('./make_color_map');
var endPlus = require('./end_plus');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        cbId = 'cb' + trace.uid;

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    if(!trace.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var cb = drawColorbar(gd, cbId);
    cd[0].t.cb = cb;

    var contours = trace.contours,
        line = trace.line,
        cs = contours.size || 1,
        coloring = contours.coloring;

    var colorMap = makeColorMap(trace, {isColorbar: true});

    if(coloring === 'heatmap') {
        cb.filllevels({
            start: trace.zmin,
            end: trace.zmax,
            size: (trace.zmax - trace.zmin) / 254
        });
    }

    cb.fillcolor((coloring === 'fill' || coloring === 'heatmap') ? colorMap : '')
        .line({
            color: coloring === 'lines' ? colorMap : line.color,
            width: contours.showlines !== false ? line.width : 0,
            dash: line.dash
        })
        .levels({
            start: contours.start,
            end: endPlus(contours),
            size: cs
        })
        .options(trace.colorbar)();
};

},{"../../components/colorbar/draw":236,"../../plots/plots":429,"./end_plus":450,"./make_color_map":451}],448:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var attributes = require('./attributes');

module.exports = function handleContourDefaults(traceIn, traceOut, coerce) {
    var contourStart = Lib.coerce2(traceIn, traceOut, attributes, 'contours.start');
    var contourEnd = Lib.coerce2(traceIn, traceOut, attributes, 'contours.end');
    var missingEnd = (contourStart === false) || (contourEnd === false);

    // normally we only need size if autocontour is off. But contour.calc
    // pushes its calculated contour size back to the input trace, so for
    // things like restyle that can call supplyDefaults without calc
    // after the initial draw, we can just reuse the previous calculation
    var contourSize = coerce('contours.size');
    var autoContour;

    if(missingEnd) autoContour = traceOut.autocontour = true;
    else autoContour = coerce('autocontour', false);

    if(autoContour || !contourSize) coerce('ncontours');
};

},{"../../lib":353,"./attributes":445}],449:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var hasColumns = require('../heatmap/has_columns');
var handleXYZDefaults = require('../heatmap/xyz_defaults');
var handleContoursDefaults = require('./contours_defaults');
var handleStyleDefaults = require('./style_defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYZDefaults(traceIn, traceOut, coerce, layout);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('connectgaps', hasColumns(traceOut));

    handleContoursDefaults(traceIn, traceOut, coerce);
    handleStyleDefaults(traceIn, traceOut, coerce, layout);
};

},{"../../lib":353,"../heatmap/has_columns":462,"../heatmap/xyz_defaults":466,"./attributes":445,"./contours_defaults":448,"./style_defaults":452}],450:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/*
 * tiny helper to move the end of the contours a little to prevent
 * losing the last contour to rounding errors
 */
module.exports = function endPlus(contours) {
    return contours.end + contours.size / 1e6;
};

},{}],451:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var Colorscale = require('../../components/colorscale');
var endPlus = require('./end_plus');

module.exports = function makeColorMap(trace) {
    var contours = trace.contours,
        start = contours.start,
        end = endPlus(contours),
        cs = contours.size || 1,
        nc = Math.floor((end - start) / cs) + 1,
        extra = contours.coloring === 'lines' ? 0 : 1;

    if(!isFinite(cs)) {
        cs = 1;
        nc = 1;
    }

    var scl = trace.colorscale,
        len = scl.length;

    var domain = new Array(len),
        range = new Array(len);

    var si, i;

    if(contours.coloring === 'heatmap') {
        if(trace.zauto && trace.autocontour === false) {
            trace.zmin = start - cs / 2;
            trace.zmax = trace.zmin + nc * cs;
        }

        for(i = 0; i < len; i++) {
            si = scl[i];

            domain[i] = si[0] * (trace.zmax - trace.zmin) + trace.zmin;
            range[i] = si[1];
        }

        // do the contours extend beyond the colorscale?
        // if so, extend the colorscale with constants
        var zRange = d3.extent([trace.zmin, trace.zmax, contours.start,
                contours.start + cs * (nc - 1)]),
            zmin = zRange[trace.zmin < trace.zmax ? 0 : 1],
            zmax = zRange[trace.zmin < trace.zmax ? 1 : 0];

        if(zmin !== trace.zmin) {
            domain.splice(0, 0, zmin);
            range.splice(0, 0, Range[0]);
        }

        if(zmax !== trace.zmax) {
            domain.push(zmax);
            range.push(range[range.length - 1]);
        }
    }
    else {
        for(i = 0; i < len; i++) {
            si = scl[i];

            domain[i] = (si[0] * (nc + extra - 1) - (extra / 2)) * cs + start;
            range[i] = si[1];
        }
    }

    return Colorscale.makeColorScaleFunc({
        domain: domain,
        range: range,
    }, {
        noNumericCheck: true
    });
};

},{"../../components/colorscale":247,"./end_plus":450,"d3":62}],452:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var colorscaleDefaults = require('../../components/colorscale/defaults');
var Lib = require('../../lib');


module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, layout, defaultColor, defaultWidth) {
    var coloring = coerce('contours.coloring');

    var showLines;
    var lineColor = '';
    if(coloring === 'fill') showLines = coerce('contours.showlines');

    if(showLines !== false) {
        if(coloring !== 'lines') lineColor = coerce('line.color', defaultColor || '#000');
        coerce('line.width', defaultWidth === undefined ? 0.5 : defaultWidth);
        coerce('line.dash');
    }

    coerce('line.smoothing');

    if(coloring !== 'none') {
        colorscaleDefaults(
            traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'}
        );
    }

    var showLabels = coerce('contours.showlabels');
    if(showLabels) {
        var globalFont = layout.font;
        Lib.coerceFont(coerce, 'contours.labelfont', {
            family: globalFont.family,
            size: globalFont.size,
            color: lineColor
        });
        coerce('contours.labelformat');
    }
};

},{"../../components/colorscale/defaults":242,"../../lib":353}],453:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createContour2D = require('gl-contour2d');
var createHeatmap2D = require('gl-heatmap2d');

var Axes = require('../../plots/cartesian/axes');
var makeColorMap = require('../contour/make_color_map');
var str2RGBArray = require('../../lib/str2rgbarray');


function Contour(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'contourgl';

    this.name = '';
    this.hoverinfo = 'all';

    this.xData = [];
    this.yData = [];
    this.zData = [];
    this.textLabels = [];

    this.idToIndex = [];
    this.bounds = [0, 0, 0, 0];

    this.contourOptions = {
        z: new Float32Array(0),
        x: [],
        y: [],
        shape: [0, 0],
        levels: [0],
        levelColors: [0, 0, 0, 1],
        lineWidth: 1
    };
    this.contour = createContour2D(scene.glplot, this.contourOptions);
    this.contour._trace = this;

    this.heatmapOptions = {
        z: new Float32Array(0),
        x: [],
        y: [],
        shape: [0, 0],
        colorLevels: [0],
        colorValues: [0, 0, 0, 0]
    };
    this.heatmap = createHeatmap2D(scene.glplot, this.heatmapOptions);
    this.heatmap._trace = this;
}

var proto = Contour.prototype;

proto.handlePick = function(pickResult) {
    var options = this.heatmapOptions,
        shape = options.shape,
        index = pickResult.pointId,
        xIndex = index % shape[0],
        yIndex = Math.floor(index / shape[0]),
        zIndex = index;

    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: [
            options.x[xIndex],
            options.y[yIndex],
            options.z[zIndex]
        ],
        textLabel: this.textLabels[index],
        name: this.name,
        pointIndex: [yIndex, xIndex],
        hoverinfo: this.hoverinfo
    };
};

proto.update = function(fullTrace, calcTrace) {
    var calcPt = calcTrace[0];

    this.index = fullTrace.index;
    this.name = fullTrace.name;
    this.hoverinfo = fullTrace.hoverinfo;

    // convert z from 2D -> 1D
    var z = calcPt.z,
        rowLen = z[0].length,
        colLen = z.length,
        colorOptions;

    this.contourOptions.z = flattenZ(z, rowLen, colLen);
    this.heatmapOptions.z = [].concat.apply([], z);

    this.contourOptions.shape = this.heatmapOptions.shape = [rowLen, colLen];

    this.contourOptions.x = this.heatmapOptions.x = calcPt.x;
    this.contourOptions.y = this.heatmapOptions.y = calcPt.y;

    // pass on fill information
    if(fullTrace.contours.coloring === 'fill') {
        colorOptions = convertColorScale(fullTrace, {fill: true});
        this.contourOptions.levels = colorOptions.levels.slice(1);
        // though gl-contour2d automatically defaults to a transparent layer for the last
        // band color, it's set manually here in case the gl-contour2 API changes
        this.contourOptions.fillColors = colorOptions.levelColors;
        this.contourOptions.levelColors = [].concat.apply([], this.contourOptions.levels.map(function() {
            return [0.25, 0.25, 0.25, 1.0];
        }));
    } else {
        colorOptions = convertColorScale(fullTrace, {fill: false});
        this.contourOptions.levels = colorOptions.levels;
        this.contourOptions.levelColors = colorOptions.levelColors;
    }

    // convert text from 2D -> 1D
    this.textLabels = [].concat.apply([], fullTrace.text);

    this.contour.update(this.contourOptions);
    this.heatmap.update(this.heatmapOptions);

    // expand axes
    Axes.expand(this.scene.xaxis, calcPt.x);
    Axes.expand(this.scene.yaxis, calcPt.y);
};

proto.dispose = function() {
    this.contour.dispose();
    this.heatmap.dispose();
};

function flattenZ(zIn, rowLen, colLen) {
    var zOut = new Float32Array(rowLen * colLen);
    var pt = 0;

    for(var i = 0; i < rowLen; i++) {
        for(var j = 0; j < colLen; j++) {
            zOut[pt++] = zIn[j][i];
        }
    }

    return zOut;
}

function convertColorScale(fullTrace, options) {
    var contours = fullTrace.contours,
        start = contours.start,
        end = contours.end,
        cs = contours.size || 1,
        fill = options.fill;

    var colorMap = makeColorMap(fullTrace);

    var N = Math.floor((end - start) / cs) + (fill ? 2 : 1), // for K thresholds (contour linees) there are K+1 areas
        levels = new Array(N),
        levelColors = new Array(4 * N);

    for(var i = 0; i < N; i++) {
        var level = levels[i] = start + cs * (i) - (fill ? cs / 2 : 0); // in case of fill, use band midpoint
        var color = str2RGBArray(colorMap(level));

        for(var j = 0; j < 4; j++) {
            levelColors[(4 * i) + j] = color[j];
        }
    }

    return {
        levels: levels,
        levelColors: levelColors
    };
}

function createContour(scene, fullTrace, calcTrace) {
    var plot = new Contour(scene, fullTrace.uid);
    plot.update(fullTrace, calcTrace);

    return plot;
}

module.exports = createContour;

},{"../../lib/str2rgbarray":374,"../../plots/cartesian/axes":396,"../contour/make_color_map":451,"gl-contour2d":76,"gl-heatmap2d":83}],454:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var overrideAll = require('../../plot_api/edit_types').overrideAll;

var ContourGl = {};

ContourGl.attributes = overrideAll(require('../contour/attributes'), 'calc', 'nested');
ContourGl.supplyDefaults = require('../contour/defaults');
ContourGl.colorbar = require('../contour/colorbar');

ContourGl.calc = require('../contour/calc');
ContourGl.plot = require('./convert');

ContourGl.moduleType = 'trace';
ContourGl.name = 'contourgl';
ContourGl.basePlotModule = require('../../plots/gl2d');
ContourGl.categories = ['gl2d', '2dMap'];
ContourGl.meta = {
    
};

module.exports = ContourGl;

},{"../../plot_api/edit_types":380,"../../plots/gl2d":424,"../contour/attributes":445,"../contour/calc":446,"../contour/colorbar":447,"../contour/defaults":449,"./convert":453}],455:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

module.exports = extendFlat({}, {
    z: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    x: extendFlat({}, scatterAttrs.x, {impliedEdits: {xtype: 'array'}}),
    x0: extendFlat({}, scatterAttrs.x0, {impliedEdits: {xtype: 'scaled'}}),
    dx: extendFlat({}, scatterAttrs.dx, {impliedEdits: {xtype: 'scaled'}}),
    y: extendFlat({}, scatterAttrs.y, {impliedEdits: {ytype: 'array'}}),
    y0: extendFlat({}, scatterAttrs.y0, {impliedEdits: {ytype: 'scaled'}}),
    dy: extendFlat({}, scatterAttrs.dy, {impliedEdits: {ytype: 'scaled'}}),

    text: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    transpose: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'calc',
        
    },
    xtype: {
        valType: 'enumerated',
        values: ['array', 'scaled'],
        
        editType: 'calc+clearAxisTypes',
        
    },
    ytype: {
        valType: 'enumerated',
        values: ['array', 'scaled'],
        
        editType: 'calc+clearAxisTypes',
        
    },
    zsmooth: {
        valType: 'enumerated',
        values: ['fast', 'best', false],
        dflt: false,
        
        editType: 'calc',
        
    },
    connectgaps: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'calc',
        
    },
    xgap: {
        valType: 'number',
        dflt: 0,
        min: 0,
        
        editType: 'plot',
        
    },
    ygap: {
        valType: 'number',
        dflt: 0,
        min: 0,
        
        editType: 'plot',
        
    },
},
    colorscaleAttrs,
    { autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}) },
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":234,"../../components/colorscale/attributes":238,"../../lib/extend":344,"../scatter/attributes":491}],456:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var histogram2dCalc = require('../histogram2d/calc');
var colorscaleCalc = require('../../components/colorscale/calc');
var hasColumns = require('./has_columns');
var convertColumnData = require('./convert_column_xyz');
var maxRowLength = require('./max_row_length');
var clean2dArray = require('./clean_2d_array');
var interp2d = require('./interp2d');
var findEmpties = require('./find_empties');
var makeBoundArray = require('./make_bound_array');


module.exports = function calc(gd, trace) {
    // prepare the raw data
    // run makeCalcdata on x and y even for heatmaps, in case of category mappings
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        ya = Axes.getFromId(gd, trace.yaxis || 'y'),
        isContour = Registry.traceIs(trace, 'contour'),
        isHist = Registry.traceIs(trace, 'histogram'),
        isGL2D = Registry.traceIs(trace, 'gl2d'),
        zsmooth = isContour ? 'best' : trace.zsmooth,
        x,
        x0,
        dx,
        y,
        y0,
        dy,
        z,
        i;

    // cancel minimum tick spacings (only applies to bars and boxes)
    xa._minDtick = 0;
    ya._minDtick = 0;

    if(isHist) {
        var binned = histogram2dCalc(gd, trace);
        x = binned.x;
        x0 = binned.x0;
        dx = binned.dx;
        y = binned.y;
        y0 = binned.y0;
        dy = binned.dy;
        z = binned.z;
    }
    else {
        if(hasColumns(trace)) {
            convertColumnData(trace, xa, ya, 'x', 'y', ['z']);
            x = trace.x;
            y = trace.y;
        } else {
            x = trace.x ? xa.makeCalcdata(trace, 'x') : [];
            y = trace.y ? ya.makeCalcdata(trace, 'y') : [];
        }

        x0 = trace.x0 || 0;
        dx = trace.dx || 1;
        y0 = trace.y0 || 0;
        dy = trace.dy || 1;

        z = clean2dArray(trace.z, trace.transpose);

        if(isContour || trace.connectgaps) {
            trace._emptypoints = findEmpties(z);
            trace._interpz = interp2d(z, trace._emptypoints, trace._interpz);
        }
    }

    function noZsmooth(msg) {
        zsmooth = trace._input.zsmooth = trace.zsmooth = false;
        Lib.notifier('cannot fast-zsmooth: ' + msg);
    }

    // check whether we really can smooth (ie all boxes are about the same size)
    if(zsmooth === 'fast') {
        if(xa.type === 'log' || ya.type === 'log') {
            noZsmooth('log axis found');
        }
        else if(!isHist) {
            if(x.length) {
                var avgdx = (x[x.length - 1] - x[0]) / (x.length - 1),
                    maxErrX = Math.abs(avgdx / 100);
                for(i = 0; i < x.length - 1; i++) {
                    if(Math.abs(x[i + 1] - x[i] - avgdx) > maxErrX) {
                        noZsmooth('x scale is not linear');
                        break;
                    }
                }
            }
            if(y.length && zsmooth === 'fast') {
                var avgdy = (y[y.length - 1] - y[0]) / (y.length - 1),
                    maxErrY = Math.abs(avgdy / 100);
                for(i = 0; i < y.length - 1; i++) {
                    if(Math.abs(y[i + 1] - y[i] - avgdy) > maxErrY) {
                        noZsmooth('y scale is not linear');
                        break;
                    }
                }
            }
        }
    }

    // create arrays of brick boundaries, to be used by autorange and heatmap.plot
    var xlen = maxRowLength(z),
        xIn = trace.xtype === 'scaled' ? '' : x,
        xArray = makeBoundArray(trace, xIn, x0, dx, xlen, xa),
        yIn = trace.ytype === 'scaled' ? '' : y,
        yArray = makeBoundArray(trace, yIn, y0, dy, z.length, ya);

    // handled in gl2d convert step
    if(!isGL2D) {
        Axes.expand(xa, xArray);
        Axes.expand(ya, yArray);
    }

    var cd0 = {x: xArray, y: yArray, z: z, text: trace.text};

    // auto-z and autocolorscale if applicable
    colorscaleCalc(trace, z, '', 'z');

    if(isContour && trace.contours && trace.contours.coloring === 'heatmap') {
        var dummyTrace = {
            type: trace.type === 'contour' ? 'heatmap' : 'histogram2d',
            xcalendar: trace.xcalendar,
            ycalendar: trace.ycalendar
        };
        cd0.xfill = makeBoundArray(dummyTrace, xIn, x0, dx, xlen, xa);
        cd0.yfill = makeBoundArray(dummyTrace, yIn, y0, dy, z.length, ya);
    }

    return [cd0];
};

},{"../../components/colorscale/calc":239,"../../lib":353,"../../plots/cartesian/axes":396,"../../registry":436,"../histogram2d/calc":474,"./clean_2d_array":457,"./convert_column_xyz":459,"./find_empties":461,"./has_columns":462,"./interp2d":463,"./make_bound_array":464,"./max_row_length":465}],457:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

module.exports = function clean2dArray(zOld, transpose) {
    var rowlen, collen, getCollen, old2new, i, j;

    function cleanZvalue(v) {
        if(!isNumeric(v)) return undefined;
        return +v;
    }

    if(transpose) {
        rowlen = 0;
        for(i = 0; i < zOld.length; i++) rowlen = Math.max(rowlen, zOld[i].length);
        if(rowlen === 0) return false;
        getCollen = function(zOld) { return zOld.length; };
        old2new = function(zOld, i, j) { return zOld[j][i]; };
    }
    else {
        rowlen = zOld.length;
        getCollen = function(zOld, i) { return zOld[i].length; };
        old2new = function(zOld, i, j) { return zOld[i][j]; };
    }

    var zNew = new Array(rowlen);

    for(i = 0; i < rowlen; i++) {
        collen = getCollen(zOld, i);
        zNew[i] = new Array(collen);
        for(j = 0; j < collen; j++) zNew[i][j] = cleanZvalue(old2new(zOld, i, j));
    }

    return zNew;
};

},{"fast-isnumeric":68}],458:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Colorscale = require('../../components/colorscale');
var drawColorbar = require('../../components/colorbar/draw');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        cbId = 'cb' + trace.uid,
        zmin = trace.zmin,
        zmax = trace.zmax;

    if(!isNumeric(zmin)) zmin = Lib.aggNums(Math.min, null, trace.z);
    if(!isNumeric(zmax)) zmax = Lib.aggNums(Math.max, null, trace.z);

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    if(!trace.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var cb = cd[0].t.cb = drawColorbar(gd, cbId);
    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            trace.colorscale,
            zmin,
            zmax
        ),
        { noNumericCheck: true }
    );

    cb.fillcolor(sclFunc)
        .filllevels({start: zmin, end: zmax, size: (zmax - zmin) / 254})
        .options(trace.colorbar)();
};

},{"../../components/colorbar/draw":236,"../../components/colorscale":247,"../../lib":353,"../../plots/plots":429,"fast-isnumeric":68}],459:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var BADNUM = require('../../constants/numerical').BADNUM;

module.exports = function convertColumnData(trace, ax1, ax2, var1Name, var2Name, arrayVarNames) {
    var1Name = var1Name || 'x';
    var2Name = var2Name || 'y';
    arrayVarNames = arrayVarNames || ['z'];

    var col1 = trace[var1Name].slice(),
        col2 = trace[var2Name].slice(),
        textCol = trace.text,
        colLen = Math.min(col1.length, col2.length),
        hasColumnText = (textCol !== undefined && !Array.isArray(textCol[0])),
        col1Calendar = trace[var1Name + 'calendar'],
        col2Calendar = trace[var2Name + 'calendar'];

    var i, j, arrayVar, newArray, arrayVarName;

    for(i = 0; i < arrayVarNames.length; i++) {
        arrayVar = trace[arrayVarNames[i]];
        if(arrayVar) colLen = Math.min(colLen, arrayVar.length);
    }

    if(colLen < col1.length) col1 = col1.slice(0, colLen);
    if(colLen < col2.length) col2 = col2.slice(0, colLen);

    for(i = 0; i < colLen; i++) {
        col1[i] = ax1.d2c(col1[i], 0, col1Calendar);
        col2[i] = ax2.d2c(col2[i], 0, col2Calendar);
    }

    var col1dv = Lib.distinctVals(col1),
        col1vals = col1dv.vals,
        col2dv = Lib.distinctVals(col2),
        col2vals = col2dv.vals,
        newArrays = [];

    for(i = 0; i < arrayVarNames.length; i++) {
        newArrays[i] = Lib.init2dArray(col2vals.length, col1vals.length);
    }

    var i1, i2, text;

    if(hasColumnText) text = Lib.init2dArray(col2vals.length, col1vals.length);

    for(i = 0; i < colLen; i++) {
        if(col1[i] !== BADNUM && col2[i] !== BADNUM) {
            i1 = Lib.findBin(col1[i] + col1dv.minDiff / 2, col1vals);
            i2 = Lib.findBin(col2[i] + col2dv.minDiff / 2, col2vals);

            for(j = 0; j < arrayVarNames.length; j++) {
                arrayVarName = arrayVarNames[j];
                arrayVar = trace[arrayVarName];
                newArray = newArrays[j];
                newArray[i2][i1] = arrayVar[i];
            }

            if(hasColumnText) text[i2][i1] = textCol[i];
        }
    }

    trace[var1Name] = col1vals;
    trace[var2Name] = col2vals;
    for(j = 0; j < arrayVarNames.length; j++) {
        trace[arrayVarNames[j]] = newArrays[j];
    }
    if(hasColumnText) trace.text = text;
};

},{"../../constants/numerical":334,"../../lib":353}],460:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var hasColumns = require('./has_columns');
var handleXYZDefaults = require('./xyz_defaults');
var colorscaleDefaults = require('../../components/colorscale/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYZDefaults(traceIn, traceOut, coerce, layout);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');

    var zsmooth = coerce('zsmooth');
    if(zsmooth === false) {
        // ensure that xgap and ygap are coerced only when zsmooth allows them to have an effect.
        coerce('xgap');
        coerce('ygap');
    }

    coerce('connectgaps', hasColumns(traceOut) && (traceOut.zsmooth !== false));

    colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'});
};

},{"../../components/colorscale/defaults":242,"../../lib":353,"./attributes":455,"./has_columns":462,"./xyz_defaults":466}],461:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var maxRowLength = require('./max_row_length');

/* Return a list of empty points in 2D array z
 * each empty point z[i][j] gives an array [i, j, neighborCount]
 * neighborCount is the count of 4 nearest neighbors that DO exist
 * this is to give us an order of points to evaluate for interpolation.
 * if no neighbors exist, we iteratively look for neighbors that HAVE
 * neighbors, and add a fractional neighborCount
 */
module.exports = function findEmpties(z) {
    var empties = [],
        neighborHash = {},
        noNeighborList = [],
        nextRow = z[0],
        row = [],
        blank = [0, 0, 0],
        rowLength = maxRowLength(z),
        prevRow,
        i,
        j,
        thisPt,
        p,
        neighborCount,
        newNeighborHash,
        foundNewNeighbors;

    for(i = 0; i < z.length; i++) {
        prevRow = row;
        row = nextRow;
        nextRow = z[i + 1] || [];
        for(j = 0; j < rowLength; j++) {
            if(row[j] === undefined) {
                neighborCount = (row[j - 1] !== undefined ? 1 : 0) +
                    (row[j + 1] !== undefined ? 1 : 0) +
                    (prevRow[j] !== undefined ? 1 : 0) +
                    (nextRow[j] !== undefined ? 1 : 0);

                if(neighborCount) {
                    // for this purpose, don't count off-the-edge points
                    // as undefined neighbors
                    if(i === 0) neighborCount++;
                    if(j === 0) neighborCount++;
                    if(i === z.length - 1) neighborCount++;
                    if(j === row.length - 1) neighborCount++;

                    // if all neighbors that could exist do, we don't
                    // need this for finding farther neighbors
                    if(neighborCount < 4) {
                        neighborHash[[i, j]] = [i, j, neighborCount];
                    }

                    empties.push([i, j, neighborCount]);
                }
                else noNeighborList.push([i, j]);
            }
        }
    }

    while(noNeighborList.length) {
        newNeighborHash = {};
        foundNewNeighbors = false;

        // look for cells that now have neighbors but didn't before
        for(p = noNeighborList.length - 1; p >= 0; p--) {
            thisPt = noNeighborList[p];
            i = thisPt[0];
            j = thisPt[1];

            neighborCount = ((neighborHash[[i - 1, j]] || blank)[2] +
                (neighborHash[[i + 1, j]] || blank)[2] +
                (neighborHash[[i, j - 1]] || blank)[2] +
                (neighborHash[[i, j + 1]] || blank)[2]) / 20;

            if(neighborCount) {
                newNeighborHash[thisPt] = [i, j, neighborCount];
                noNeighborList.splice(p, 1);
                foundNewNeighbors = true;
            }
        }

        if(!foundNewNeighbors) {
            throw 'findEmpties iterated with no new neighbors';
        }

        // put these new cells into the main neighbor list
        for(thisPt in newNeighborHash) {
            neighborHash[thisPt] = newNeighborHash[thisPt];
            empties.push(newNeighborHash[thisPt]);
        }
    }

    // sort the full list in descending order of neighbor count
    return empties.sort(function(a, b) { return b[2] - a[2]; });
};

},{"./max_row_length":465}],462:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = function(trace) {
    return !Array.isArray(trace.z[0]);
};

},{}],463:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');

var INTERPTHRESHOLD = 1e-2,
    NEIGHBORSHIFTS = [[-1, 0], [1, 0], [0, -1], [0, 1]];

function correctionOvershoot(maxFractionalChange) {
    // start with less overshoot, until we know it's converging,
    // then ramp up the overshoot for faster convergence
    return 0.5 - 0.25 * Math.min(1, maxFractionalChange * 0.5);
}

module.exports = function interp2d(z, emptyPoints, savedInterpZ) {
    // fill in any missing data in 2D array z using an iterative
    // poisson equation solver with zero-derivative BC at edges
    // amazingly, this just amounts to repeatedly averaging all the existing
    // nearest neighbors (at least if we don't take x/y scaling into account)
    var maxFractionalChange = 1,
        i,
        thisPt;

    if(Array.isArray(savedInterpZ)) {
        for(i = 0; i < emptyPoints.length; i++) {
            thisPt = emptyPoints[i];
            z[thisPt[0]][thisPt[1]] = savedInterpZ[thisPt[0]][thisPt[1]];
        }
    }
    else {
        // one pass to fill in a starting value for all the empties
        iterateInterp2d(z, emptyPoints);
    }

    // we're don't need to iterate lone empties - remove them
    for(i = 0; i < emptyPoints.length; i++) {
        if(emptyPoints[i][2] < 4) break;
    }
    // but don't remove these points from the original array,
    // we'll use them for masking, so make a copy.
    emptyPoints = emptyPoints.slice(i);

    for(i = 0; i < 100 && maxFractionalChange > INTERPTHRESHOLD; i++) {
        maxFractionalChange = iterateInterp2d(z, emptyPoints,
            correctionOvershoot(maxFractionalChange));
    }
    if(maxFractionalChange > INTERPTHRESHOLD) {
        Lib.log('interp2d didn\'t converge quickly', maxFractionalChange);
    }

    return z;
};

function iterateInterp2d(z, emptyPoints, overshoot) {
    var maxFractionalChange = 0,
        thisPt,
        i,
        j,
        p,
        q,
        neighborShift,
        neighborRow,
        neighborVal,
        neighborCount,
        neighborSum,
        initialVal,
        minNeighbor,
        maxNeighbor;

    for(p = 0; p < emptyPoints.length; p++) {
        thisPt = emptyPoints[p];
        i = thisPt[0];
        j = thisPt[1];
        initialVal = z[i][j];
        neighborSum = 0;
        neighborCount = 0;

        for(q = 0; q < 4; q++) {
            neighborShift = NEIGHBORSHIFTS[q];
            neighborRow = z[i + neighborShift[0]];
            if(!neighborRow) continue;
            neighborVal = neighborRow[j + neighborShift[1]];
            if(neighborVal !== undefined) {
                if(neighborSum === 0) {
                    minNeighbor = maxNeighbor = neighborVal;
                }
                else {
                    minNeighbor = Math.min(minNeighbor, neighborVal);
                    maxNeighbor = Math.max(maxNeighbor, neighborVal);
                }
                neighborCount++;
                neighborSum += neighborVal;
            }
        }

        if(neighborCount === 0) {
            throw 'iterateInterp2d order is wrong: no defined neighbors';
        }

        // this is the laplace equation interpolation:
        // each point is just the average of its neighbors
        // note that this ignores differential x/y scaling
        // which I think is the right approach, since we
        // don't know what that scaling means
        z[i][j] = neighborSum / neighborCount;

        if(initialVal === undefined) {
            if(neighborCount < 4) maxFractionalChange = 1;
        }
        else {
            // we can make large empty regions converge faster
            // if we overshoot the change vs the previous value
            z[i][j] = (1 + overshoot) * z[i][j] - overshoot * initialVal;

            if(maxNeighbor > minNeighbor) {
                maxFractionalChange = Math.max(maxFractionalChange,
                    Math.abs(z[i][j] - initialVal) / (maxNeighbor - minNeighbor));
            }
        }
    }

    return maxFractionalChange;
}

},{"../../lib":353}],464:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');

module.exports = function makeBoundArray(trace, arrayIn, v0In, dvIn, numbricks, ax) {
    var arrayOut = [],
        isContour = Registry.traceIs(trace, 'contour'),
        isHist = Registry.traceIs(trace, 'histogram'),
        isGL2D = Registry.traceIs(trace, 'gl2d'),
        v0,
        dv,
        i;

    var isArrayOfTwoItemsOrMore = Array.isArray(arrayIn) && arrayIn.length > 1;

    if(isArrayOfTwoItemsOrMore && !isHist && (ax.type !== 'category')) {
        var len = arrayIn.length;

        // given vals are brick centers
        // hopefully length === numbricks, but use this method even if too few are supplied
        // and extend it linearly based on the last two points
        if(len <= numbricks) {
            // contour plots only want the centers
            if(isContour || isGL2D) arrayOut = arrayIn.slice(0, numbricks);
            else if(numbricks === 1) {
                arrayOut = [arrayIn[0] - 0.5, arrayIn[0] + 0.5];
            }
            else {
                arrayOut = [1.5 * arrayIn[0] - 0.5 * arrayIn[1]];

                for(i = 1; i < len; i++) {
                    arrayOut.push((arrayIn[i - 1] + arrayIn[i]) * 0.5);
                }

                arrayOut.push(1.5 * arrayIn[len - 1] - 0.5 * arrayIn[len - 2]);
            }

            if(len < numbricks) {
                var lastPt = arrayOut[arrayOut.length - 1],
                    delta = lastPt - arrayOut[arrayOut.length - 2];

                for(i = len; i < numbricks; i++) {
                    lastPt += delta;
                    arrayOut.push(lastPt);
                }
            }
        }
        else {
            // hopefully length === numbricks+1, but do something regardless:
            // given vals are brick boundaries
            return isContour ?
                arrayIn.slice(0, numbricks) :  // we must be strict for contours
                arrayIn.slice(0, numbricks + 1);
        }
    }
    else {
        dv = dvIn || 1;

        var calendar = trace[ax._id.charAt(0) + 'calendar'];

        if(isHist || ax.type === 'category') v0 = ax.r2c(v0In, 0, calendar) || 0;
        else if(Array.isArray(arrayIn) && arrayIn.length === 1) v0 = arrayIn[0];
        else if(v0In === undefined) v0 = 0;
        else v0 = ax.d2c(v0In, 0, calendar);

        for(i = (isContour || isGL2D) ? 0 : -0.5; i < numbricks; i++) {
            arrayOut.push(v0 + dv * i);
        }
    }

    return arrayOut;
};

},{"../../registry":436}],465:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = function maxRowLength(z) {
    var len = 0;

    for(var i = 0; i < z.length; i++) {
        len = Math.max(len, z[i].length);
    }

    return len;
};

},{}],466:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var hasColumns = require('./has_columns');


module.exports = function handleXYZDefaults(traceIn, traceOut, coerce, layout, xName, yName) {
    var z = coerce('z');
    xName = xName || 'x';
    yName = yName || 'y';
    var x, y;

    if(z === undefined || !z.length) return 0;

    if(hasColumns(traceIn)) {
        x = coerce(xName);
        y = coerce(yName);

        // column z must be accompanied by xName and yName arrays
        if(!x || !y) return 0;
    }
    else {
        x = coordDefaults(xName, coerce);
        y = coordDefaults(yName, coerce);

        // TODO put z validation elsewhere
        if(!isValidZ(z)) return 0;

        coerce('transpose');
    }

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, [xName, yName], layout);

    return traceOut.z.length;
};

function coordDefaults(coordStr, coerce) {
    var coord = coerce(coordStr),
        coordType = coord ?
            coerce(coordStr + 'type', 'array') :
            'scaled';

    if(coordType === 'scaled') {
        coerce(coordStr + '0');
        coerce('d' + coordStr);
    }

    return coord;
}

function isValidZ(z) {
    var allRowsAreArrays = true,
        oneRowIsFilled = false,
        hasOneNumber = false,
        zi;

    /*
     * Without this step:
     *
     * hasOneNumber = false breaks contour but not heatmap
     * allRowsAreArrays = false breaks contour but not heatmap
     * oneRowIsFilled = false breaks both
     */

    for(var i = 0; i < z.length; i++) {
        zi = z[i];
        if(!Array.isArray(zi)) {
            allRowsAreArrays = false;
            break;
        }
        if(zi.length > 0) oneRowIsFilled = true;
        for(var j = 0; j < zi.length; j++) {
            if(isNumeric(zi[j])) {
                hasOneNumber = true;
                break;
            }
        }
    }

    return (allRowsAreArrays && oneRowIsFilled && hasOneNumber);
}

},{"../../registry":436,"./has_columns":462,"fast-isnumeric":68}],467:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


var heatmapAttrs = require('../heatmap/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;
var overrideAll = require('../../plot_api/edit_types').overrideAll;


var commonList = [
    'z',
    'x', 'x0', 'dx',
    'y', 'y0', 'dy',
    'text', 'transpose',
    'xtype', 'ytype'
];

var attrs = {};

for(var i = 0; i < commonList.length; i++) {
    var k = commonList[i];
    attrs[k] = heatmapAttrs[k];
}

extendFlat(
    attrs,
    colorscaleAttrs,
    { autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}) },
    { colorbar: colorbarAttrs }
);

module.exports = overrideAll(attrs, 'calc', 'nested');

},{"../../components/colorbar/attributes":234,"../../components/colorscale/attributes":238,"../../lib/extend":344,"../../plot_api/edit_types":380,"../heatmap/attributes":455}],468:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createHeatmap2D = require('gl-heatmap2d');
var Axes = require('../../plots/cartesian/axes');
var str2RGBArray = require('../../lib/str2rgbarray');


function Heatmap(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'heatmapgl';

    this.name = '';
    this.hoverinfo = 'all';

    this.xData = [];
    this.yData = [];
    this.zData = [];
    this.textLabels = [];

    this.idToIndex = [];
    this.bounds = [0, 0, 0, 0];

    this.options = {
        z: [],
        x: [],
        y: [],
        shape: [0, 0],
        colorLevels: [0],
        colorValues: [0, 0, 0, 1]
    };

    this.heatmap = createHeatmap2D(scene.glplot, this.options);
    this.heatmap._trace = this;
}

var proto = Heatmap.prototype;

proto.handlePick = function(pickResult) {
    var options = this.options,
        shape = options.shape,
        index = pickResult.pointId,
        xIndex = index % shape[0],
        yIndex = Math.floor(index / shape[0]),
        zIndex = index;

    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: [
            options.x[xIndex],
            options.y[yIndex],
            options.z[zIndex]
        ],
        textLabel: this.textLabels[index],
        name: this.name,
        pointIndex: [yIndex, xIndex],
        hoverinfo: this.hoverinfo
    };
};

proto.update = function(fullTrace, calcTrace) {
    var calcPt = calcTrace[0];

    this.index = fullTrace.index;
    this.name = fullTrace.name;
    this.hoverinfo = fullTrace.hoverinfo;

    // convert z from 2D -> 1D
    var z = calcPt.z;
    this.options.z = [].concat.apply([], z);

    var rowLen = z[0].length,
        colLen = z.length;
    this.options.shape = [rowLen, colLen];

    this.options.x = calcPt.x;
    this.options.y = calcPt.y;

    var colorOptions = convertColorscale(fullTrace);
    this.options.colorLevels = colorOptions.colorLevels;
    this.options.colorValues = colorOptions.colorValues;

    // convert text from 2D -> 1D
    this.textLabels = [].concat.apply([], fullTrace.text);

    this.heatmap.update(this.options);

    Axes.expand(this.scene.xaxis, calcPt.x);
    Axes.expand(this.scene.yaxis, calcPt.y);
};

proto.dispose = function() {
    this.heatmap.dispose();
};

function convertColorscale(fullTrace) {
    var scl = fullTrace.colorscale,
        zmin = fullTrace.zmin,
        zmax = fullTrace.zmax;

    var N = scl.length,
        domain = new Array(N),
        range = new Array(4 * N);

    for(var i = 0; i < N; i++) {
        var si = scl[i];
        var color = str2RGBArray(si[1]);

        domain[i] = zmin + si[0] * (zmax - zmin);

        for(var j = 0; j < 4; j++) {
            range[(4 * i) + j] = color[j];
        }
    }

    return {
        colorLevels: domain,
        colorValues: range
    };
}

function createHeatmap(scene, fullTrace, calcTrace) {
    var plot = new Heatmap(scene, fullTrace.uid);
    plot.update(fullTrace, calcTrace);
    return plot;
}

module.exports = createHeatmap;

},{"../../lib/str2rgbarray":374,"../../plots/cartesian/axes":396,"gl-heatmap2d":83}],469:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var HeatmapGl = {};

HeatmapGl.attributes = require('./attributes');
HeatmapGl.supplyDefaults = require('../heatmap/defaults');
HeatmapGl.colorbar = require('../heatmap/colorbar');

HeatmapGl.calc = require('../heatmap/calc');
HeatmapGl.plot = require('./convert');

HeatmapGl.moduleType = 'trace';
HeatmapGl.name = 'heatmapgl';
HeatmapGl.basePlotModule = require('../../plots/gl2d');
HeatmapGl.categories = ['gl2d', '2dMap'];
HeatmapGl.meta = {
    
};

module.exports = HeatmapGl;

},{"../../plots/gl2d":424,"../heatmap/calc":456,"../heatmap/colorbar":458,"../heatmap/defaults":460,"./attributes":467,"./convert":468}],470:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = function doAvg(size, counts) {
    var nMax = size.length,
        total = 0;
    for(var i = 0; i < nMax; i++) {
        if(counts[i]) {
            size[i] /= counts[i];
            total += size[i];
        }
        else size[i] = null;
    }
    return total;
};

},{}],471:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');


module.exports = {
    count: function(n, i, size) {
        size[n]++;
        return 1;
    },

    sum: function(n, i, size, counterData) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            size[n] += v;
            return v;
        }
        return 0;
    },

    avg: function(n, i, size, counterData, counts) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            size[n] += v;
            counts[n]++;
        }
        return 0;
    },

    min: function(n, i, size, counterData) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            if(!isNumeric(size[n])) {
                size[n] = v;
                return v;
            }
            else if(size[n] > v) {
                var delta = v - size[n];
                size[n] = v;
                return delta;
            }
        }
        return 0;
    },

    max: function(n, i, size, counterData) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            if(!isNumeric(size[n])) {
                size[n] = v;
                return v;
            }
            else if(size[n] < v) {
                var delta = v - size[n];
                size[n] = v;
                return delta;
            }
        }
        return 0;
    }
};

},{"fast-isnumeric":68}],472:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';
var isNumeric = require('fast-isnumeric');
var cleanDate = require('../../lib').cleanDate;
var constants = require('../../constants/numerical');
var ONEDAY = constants.ONEDAY;
var BADNUM = constants.BADNUM;

/*
 * cleanBins: validate attributes autobin[xy] and [xy]bins.(start, end, size)
 * Mutates trace so all these attributes are valid.
 *
 * Normally this kind of thing would happen during supplyDefaults, but
 * in this case we need to know the axis type, and axis type isn't set until
 * after trace supplyDefaults are completed. So this gets called during the
 * calc step, when data are inserted into bins.
 */
module.exports = function cleanBins(trace, ax, binDirection) {
    var axType = ax.type,
        binAttr = binDirection + 'bins',
        bins = trace[binAttr];

    if(!bins) bins = trace[binAttr] = {};

    var cleanBound = (axType === 'date') ?
        function(v) { return (v || v === 0) ? cleanDate(v, BADNUM, bins.calendar) : null; } :
        function(v) { return isNumeric(v) ? Number(v) : null; };

    bins.start = cleanBound(bins.start);
    bins.end = cleanBound(bins.end);

    // logic for bin size is very similar to dtick (cartesian/tick_value_defaults)
    // but without the extra string options for log axes
    // ie the only strings we accept are M<n> for months
    var sizeDflt = (axType === 'date') ? ONEDAY : 1,
        binSize = bins.size;

    if(isNumeric(binSize)) {
        bins.size = (binSize > 0) ? Number(binSize) : sizeDflt;
    }
    else if(typeof binSize !== 'string') {
        bins.size = sizeDflt;
    }
    else {
        // date special case: "M<n>" gives bins every (integer) n months
        var prefix = binSize.charAt(0),
            sizeNum = binSize.substr(1);

        sizeNum = isNumeric(sizeNum) ? Number(sizeNum) : 0;
        if((sizeNum <= 0) || !(
                axType === 'date' && prefix === 'M' && sizeNum === Math.round(sizeNum)
            )) {
            bins.size = sizeDflt;
        }
    }

    var autoBinAttr = 'autobin' + binDirection;

    if(typeof trace[autoBinAttr] !== 'boolean') {
        trace[autoBinAttr] = !(
            (bins.start || bins.start === 0) &&
            (bins.end || bins.end === 0)
        );
    }

    if(!trace[autoBinAttr]) delete trace['nbins' + binDirection];
};

},{"../../constants/numerical":334,"../../lib":353,"fast-isnumeric":68}],473:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    percent: function(size, total) {
        var nMax = size.length,
            norm = 100 / total;
        for(var n = 0; n < nMax; n++) size[n] *= norm;
    },
    probability: function(size, total) {
        var nMax = size.length;
        for(var n = 0; n < nMax; n++) size[n] /= total;
    },
    density: function(size, total, inc, yinc) {
        var nMax = size.length;
        yinc = yinc || 1;
        for(var n = 0; n < nMax; n++) size[n] *= inc[n] * yinc;
    },
    'probability density': function(size, total, inc, yinc) {
        var nMax = size.length;
        if(yinc) total /= yinc;
        for(var n = 0; n < nMax; n++) size[n] *= inc[n] / total;
    }
};

},{}],474:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var binFunctions = require('../histogram/bin_functions');
var normFunctions = require('../histogram/norm_functions');
var doAvg = require('../histogram/average');
var cleanBins = require('../histogram/clean_bins');


module.exports = function calc(gd, trace) {
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        x = trace.x ? xa.makeCalcdata(trace, 'x') : [],
        ya = Axes.getFromId(gd, trace.yaxis || 'y'),
        y = trace.y ? ya.makeCalcdata(trace, 'y') : [],
        xcalendar = trace.xcalendar,
        ycalendar = trace.ycalendar,
        xr2c = function(v) { return xa.r2c(v, 0, xcalendar); },
        yr2c = function(v) { return ya.r2c(v, 0, ycalendar); },
        xc2r = function(v) { return xa.c2r(v, 0, xcalendar); },
        yc2r = function(v) { return ya.c2r(v, 0, ycalendar); },
        x0,
        dx,
        y0,
        dy,
        z,
        i;

    cleanBins(trace, xa, 'x');
    cleanBins(trace, ya, 'y');

    var serieslen = Math.min(x.length, y.length);
    if(x.length > serieslen) x.splice(serieslen, x.length - serieslen);
    if(y.length > serieslen) y.splice(serieslen, y.length - serieslen);


    // calculate the bins
    if(trace.autobinx || !trace.xbins ||
            trace.xbins.start === null || trace.xbins.end === null) {
        trace.xbins = Axes.autoBin(x, xa, trace.nbinsx, '2d', xcalendar);
        if(trace.type === 'histogram2dcontour') {
            // the "true" last argument reverses the tick direction (which we can't
            // just do with a minus sign because of month bins)
            trace.xbins.start = xc2r(Axes.tickIncrement(
                xr2c(trace.xbins.start), trace.xbins.size, true, xcalendar));
            trace.xbins.end = xc2r(Axes.tickIncrement(
                xr2c(trace.xbins.end), trace.xbins.size, false, xcalendar));
        }

        // copy bin info back to the source data.
        trace._input.xbins = trace.xbins;
        // note that it's possible to get here with an explicit autobin: false
        // if the bins were not specified.
        // in that case this will remain in the trace, so that future updates
        // which would change the autobinning will not do so.
        trace._input.autobinx = trace.autobinx;
    }
    if(trace.autobiny || !trace.ybins ||
            trace.ybins.start === null || trace.ybins.end === null) {
        trace.ybins = Axes.autoBin(y, ya, trace.nbinsy, '2d', ycalendar);
        if(trace.type === 'histogram2dcontour') {
            trace.ybins.start = yc2r(Axes.tickIncrement(
                yr2c(trace.ybins.start), trace.ybins.size, true, ycalendar));
            trace.ybins.end = yc2r(Axes.tickIncrement(
                yr2c(trace.ybins.end), trace.ybins.size, false, ycalendar));
        }
        trace._input.ybins = trace.ybins;
        trace._input.autobiny = trace.autobiny;
    }

    // make the empty bin array & scale the map
    z = [];
    var onecol = [],
        zerocol = [],
        nonuniformBinsX = (typeof(trace.xbins.size) === 'string'),
        nonuniformBinsY = (typeof(trace.ybins.size) === 'string'),
        xbins = nonuniformBinsX ? [] : trace.xbins,
        ybins = nonuniformBinsY ? [] : trace.ybins,
        total = 0,
        n,
        m,
        counts = [],
        norm = trace.histnorm,
        func = trace.histfunc,
        densitynorm = (norm.indexOf('density') !== -1),
        extremefunc = (func === 'max' || func === 'min'),
        sizeinit = (extremefunc ? null : 0),
        binfunc = binFunctions.count,
        normfunc = normFunctions[norm],
        doavg = false,
        xinc = [],
        yinc = [];

    // set a binning function other than count?
    // for binning functions: check first for 'z',
    // then 'mc' in case we had a colored scatter plot
    // and want to transfer these colors to the 2D histo
    // TODO: this is why we need a data picker in the popover...
    var rawCounterData = ('z' in trace) ?
        trace.z :
        (('marker' in trace && Array.isArray(trace.marker.color)) ?
            trace.marker.color : '');
    if(rawCounterData && func !== 'count') {
        doavg = func === 'avg';
        binfunc = binFunctions[func];
    }

    // decrease end a little in case of rounding errors
    var binspec = trace.xbins,
        binStart = xr2c(binspec.start),
        binEnd = xr2c(binspec.end) +
            (binStart - Axes.tickIncrement(binStart, binspec.size, false, xcalendar)) / 1e6;

    for(i = binStart; i < binEnd; i = Axes.tickIncrement(i, binspec.size, false, xcalendar)) {
        onecol.push(sizeinit);
        if(nonuniformBinsX) xbins.push(i);
        if(doavg) zerocol.push(0);
    }
    if(nonuniformBinsX) xbins.push(i);

    var nx = onecol.length;
    x0 = trace.xbins.start;
    var x0c = xr2c(x0);
    dx = (i - x0c) / nx;
    x0 = xc2r(x0c + dx / 2);

    binspec = trace.ybins;
    binStart = yr2c(binspec.start);
    binEnd = yr2c(binspec.end) +
        (binStart - Axes.tickIncrement(binStart, binspec.size, false, ycalendar)) / 1e6;

    for(i = binStart; i < binEnd; i = Axes.tickIncrement(i, binspec.size, false, ycalendar)) {
        z.push(onecol.concat());
        if(nonuniformBinsY) ybins.push(i);
        if(doavg) counts.push(zerocol.concat());
    }
    if(nonuniformBinsY) ybins.push(i);

    var ny = z.length;
    y0 = trace.ybins.start;
    var y0c = yr2c(y0);
    dy = (i - y0c) / ny;
    y0 = yc2r(y0c + dy / 2);

    if(densitynorm) {
        xinc = onecol.map(function(v, i) {
            if(nonuniformBinsX) return 1 / (xbins[i + 1] - xbins[i]);
            return 1 / dx;
        });
        yinc = z.map(function(v, i) {
            if(nonuniformBinsY) return 1 / (ybins[i + 1] - ybins[i]);
            return 1 / dy;
        });
    }

    // for date axes we need bin bounds to be calcdata. For nonuniform bins
    // we already have this, but uniform with start/end/size they're still strings.
    if(!nonuniformBinsX && xa.type === 'date') {
        xbins = {
            start: xr2c(xbins.start),
            end: xr2c(xbins.end),
            size: xbins.size
        };
    }
    if(!nonuniformBinsY && ya.type === 'date') {
        ybins = {
            start: yr2c(ybins.start),
            end: yr2c(ybins.end),
            size: ybins.size
        };
    }


    // put data into bins
    for(i = 0; i < serieslen; i++) {
        n = Lib.findBin(x[i], xbins);
        m = Lib.findBin(y[i], ybins);
        if(n >= 0 && n < nx && m >= 0 && m < ny) {
            total += binfunc(n, i, z[m], rawCounterData, counts[m]);
        }
    }
    // normalize, if needed
    if(doavg) {
        for(m = 0; m < ny; m++) total += doAvg(z[m], counts[m]);
    }
    if(normfunc) {
        for(m = 0; m < ny; m++) normfunc(z[m], total, xinc, yinc[m]);
    }

    return {
        x: x,
        x0: x0,
        dx: dx,
        y: y,
        y0: y0,
        dy: dy,
        z: z
    };
};

},{"../../lib":353,"../../plots/cartesian/axes":396,"../histogram/average":470,"../histogram/bin_functions":471,"../histogram/clean_bins":472,"../histogram/norm_functions":473}],475:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttributes = require('../../components/colorscale/color_attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var colorscales = require('../../components/colorscale/scales');
var axesAttrs = require('../../plots/cartesian/layout_attributes');
var fontAttrs = require('../../plots/font_attributes');

var extend = require('../../lib/extend');
var extendDeepAll = extend.extendDeepAll;
var extendFlat = extend.extendFlat;

module.exports = {

    domain: {
        x: {
            valType: 'info_array',
            
            items: [
                {valType: 'number', min: 0, max: 1, editType: 'calc'},
                {valType: 'number', min: 0, max: 1, editType: 'calc'}
            ],
            dflt: [0, 1],
            editType: 'calc',
            
        },
        y: {
            valType: 'info_array',
            
            items: [
                {valType: 'number', min: 0, max: 1, editType: 'calc'},
                {valType: 'number', min: 0, max: 1, editType: 'calc'}
            ],
            dflt: [0, 1],
            editType: 'calc',
            
        },
        editType: 'calc'
    },

    labelfont: fontAttrs({
        editType: 'calc',
        
    }),
    tickfont: fontAttrs({
        editType: 'calc',
        
    }),
    rangefont: fontAttrs({
        editType: 'calc',
        
    }),

    dimensions: {
        _isLinkedToArray: 'dimension',
        label: {
            valType: 'string',
            
            editType: 'calc',
            
        },
        tickvals: extendFlat({}, axesAttrs.tickvals, {editType: 'calc'}),
        ticktext: extendFlat({}, axesAttrs.ticktext, {editType: 'calc'}),
        tickformat: {
            valType: 'string',
            dflt: '3s',
            
            editType: 'calc',
            
        },
        visible: {
            valType: 'boolean',
            dflt: true,
            
            editType: 'calc',
            
        },
        range: {
            valType: 'info_array',
            
            items: [
                {valType: 'number', editType: 'calc'},
                {valType: 'number', editType: 'calc'}
            ],
            editType: 'calc',
            
        },
        constraintrange: {
            valType: 'info_array',
            
            items: [
                {valType: 'number', editType: 'calc'},
                {valType: 'number', editType: 'calc'}
            ],
            editType: 'calc',
            
        },
        values: {
            valType: 'data_array',
            
            dflt: [],
            editType: 'calc',
            
        },
        editType: 'calc',
        
    },

    line: extendFlat(
        // the default autocolorscale isn't quite usable for parcoords due to context ambiguity around 0 (grey, off-white)
        // autocolorscale therefore defaults to false too, to avoid being overridden by the  blue-white-red autocolor palette
        extendDeepAll(
            colorAttributes('line', 'calc'),
            {
                colorscale: {dflt: colorscales.Viridis},
                autocolorscale: {
                    dflt: false,
                    
                }

            }
        ),

        {
            showscale: {
                valType: 'boolean',
                
                dflt: false,
                editType: 'calc',
                
            },
            colorbar: colorbarAttrs,
            editType: 'calc'
        }
    )
};

},{"../../components/colorbar/attributes":234,"../../components/colorscale/color_attributes":240,"../../components/colorscale/scales":251,"../../lib/extend":344,"../../plots/cartesian/layout_attributes":407,"../../plots/font_attributes":420}],476:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');
var Plots = require('../../plots/plots');
var parcoordsPlot = require('./plot');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');
var c = require('./constants');

exports.name = 'parcoords';

exports.attr = 'type';

exports.plot = function(gd) {
    var calcData = Plots.getSubplotCalcData(gd.calcdata, 'parcoords', 'parcoords');
    if(calcData.length) parcoordsPlot(gd, calcData);
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var hadParcoords = (oldFullLayout._has && oldFullLayout._has('parcoords'));
    var hasParcoords = (newFullLayout._has && newFullLayout._has('parcoords'));

    if(hadParcoords && !hasParcoords) {
        oldFullLayout._paperdiv.selectAll('.parcoords-line-layers').remove();
        oldFullLayout._paperdiv.selectAll('.parcoords-line-layers').remove();
        oldFullLayout._paperdiv.selectAll('.parcoords').remove();
        oldFullLayout._paperdiv.selectAll('.parcoords').remove();
        oldFullLayout._glimages.selectAll('*').remove();
    }
};

exports.toSVG = function(gd) {

    var imageRoot = gd._fullLayout._glimages;
    var root = d3.select(gd).selectAll('.svg-container');
    var canvases = root.filter(function(d, i) {return i === root.size() - 1;})
        .selectAll('.parcoords-lines.context, .parcoords-lines.focus');

    function canvasToImage(d) {
        var canvas = this;
        var imageData = canvas.toDataURL('image/png');
        var image = imageRoot.append('svg:image');
        var size = gd._fullLayout._size;
        var domain = gd._fullData[d.model.key].domain;

        image.attr({
            xmlns: xmlnsNamespaces.svg,
            'xlink:href': imageData,
            x: size.l + size.w * domain.x[0] - c.overdrag,
            y: size.t + size.h * (1 - domain.y[1]),
            width: (domain.x[1] - domain.x[0]) * size.w + 2 * c.overdrag,
            height: (domain.y[1] - domain.y[0]) * size.h,
            preserveAspectRatio: 'none'
        });
    }

    canvases.each(canvasToImage);

    // Chrome / Safari bug workaround - browser apparently loses connection to the defined pattern
    // Without the workaround, these browsers 'lose' the filter brush styling (color etc.) after a snapshot
    // on a subsequent interaction.
    // Firefox works fine without this workaround
    window.setTimeout(function() {
        d3.selectAll('#filterBarPattern')
            .attr('id', 'filterBarPattern');
    }, 60);
};

},{"../../constants/xmlns_namespaces":336,"../../plots/plots":429,"./constants":479,"./plot":484,"d3":62}],477:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var hasColorscale = require('../../components/colorscale/has_colorscale');
var calcColorscale = require('../../components/colorscale/calc');
var Lib = require('../../lib');
var wrap = require('../../lib/gup').wrap;

module.exports = function calc(gd, trace) {
    var cs = !!trace.line.colorscale && Lib.isArray(trace.line.color);
    var color = cs ? trace.line.color : Array.apply(0, Array(trace.dimensions.reduce(function(p, n) {return Math.max(p, n.values.length);}, 0))).map(function() {return 0.5;});
    var cscale = cs ? trace.line.colorscale : [[0, trace.line.color], [1, trace.line.color]];

    if(hasColorscale(trace, 'line')) {
        calcColorscale(trace, trace.line.color, 'line', 'c');
    }

    return wrap({
        lineColor: color,
        cscale: cscale
    });
};

},{"../../components/colorscale/calc":239,"../../components/colorscale/has_colorscale":246,"../../lib":353,"../../lib/gup":350}],478:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Colorscale = require('../../components/colorscale');
var drawColorbar = require('../../components/colorbar/draw');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        line = trace.line,
        cbId = 'cb' + trace.uid;

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    if((line === undefined) || !line.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var vals = line.color,
        cmin = line.cmin,
        cmax = line.cmax;

    if(!isNumeric(cmin)) cmin = Lib.aggNums(Math.min, null, vals);
    if(!isNumeric(cmax)) cmax = Lib.aggNums(Math.max, null, vals);

    var cb = cd[0].t.cb = drawColorbar(gd, cbId);
    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            line.colorscale,
            cmin,
            cmax
        ),
        { noNumericCheck: true }
    );

    cb.fillcolor(sclFunc)
        .filllevels({start: cmin, end: cmax, size: (cmax - cmin) / 254})
        .options(line.colorbar)();
};

},{"../../components/colorbar/draw":236,"../../components/colorscale":247,"../../lib":353,"../../plots/plots":429,"fast-isnumeric":68}],479:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    maxDimensionCount: 60, // this cannot be increased without WebGL code refactoring
    overdrag: 45,
    verticalPadding: 2, // otherwise, horizontal lines on top or bottom are of lower width
    tickDistance: 50,
    canvasPixelRatio: 1,
    blockLineCount: 5000,
    scatter: false,
    layers: ['contextLineLayer', 'focusLineLayer', 'pickLineLayer'],
    axisTitleOffset: 28,
    axisExtentOffset: 10,
    bar: {
        width: 4, // Visible width of the filter bar
        capturewidth: 10, // Mouse-sensitive width for interaction (Fitts law)
        fillcolor: 'magenta', // Color of the filter bar fill
        fillopacity: 1, // Filter bar fill opacity
        strokecolor: 'white', // Color of the filter bar side lines
        strokeopacity: 1, // Filter bar side stroke opacity
        strokewidth: 1, // Filter bar side stroke width in pixels
        handleheight: 16, // Height of the filter bar vertical resize areas on top and bottom
        handleopacity: 1, // Opacity of the filter bar vertical resize areas on top and bottom
        handleoverlap: 0 // A larger than 0 value causes overlaps with the filter bar, represented as pixels.'
    },
    cn: {
        axisExtentText: 'axis-extent-text',
        parcoordsLineLayers: 'parcoords-line-layers',
        parcoordsLineLayer: 'parcoords-lines',
        parcoords: 'parcoords',
        parcoordsControlView: 'parcoords-control-view',
        yAxis: 'y-axis',
        axisOverlays: 'axis-overlays',
        axis: 'axis',
        axisHeading: 'axis-heading',
        axisTitle: 'axis-title',
        axisExtent: 'axis-extent',
        axisExtentTop: 'axis-extent-top',
        axisExtentTopText: 'axis-extent-top-text',
        axisExtentBottom: 'axis-extent-bottom',
        axisExtentBottomText: 'axis-extent-bottom-text',
        axisBrush: 'axis-brush'
    },
    id: {
        filterBarPattern: 'filter-bar-pattern'

    }
};

},{}],480:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var attributes = require('./attributes');
var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleDefaults = require('../../components/colorscale/defaults');
var maxDimensionCount = require('./constants').maxDimensionCount;

function handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce) {

    coerce('line.color', defaultColor);

    if(hasColorscale(traceIn, 'line') && Lib.isArray(traceIn.line.color)) {
        coerce('line.colorscale');
        colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'line.', cLetter: 'c'});
    }
    else {
        coerce('line.color', defaultColor);
    }
}

function dimensionsDefaults(traceIn, traceOut) {
    var dimensionsIn = traceIn.dimensions || [],
        dimensionsOut = traceOut.dimensions = [];

    var dimensionIn, dimensionOut, i;
    var commonLength = Infinity;

    if(dimensionsIn.length > maxDimensionCount) {
        Lib.log('parcoords traces support up to ' + maxDimensionCount + ' dimensions at the moment');
        dimensionsIn.splice(maxDimensionCount);
    }

    function coerce(attr, dflt) {
        return Lib.coerce(dimensionIn, dimensionOut, attributes.dimensions, attr, dflt);
    }

    for(i = 0; i < dimensionsIn.length; i++) {
        dimensionIn = dimensionsIn[i];
        dimensionOut = {};

        if(!Lib.isPlainObject(dimensionIn)) {
            continue;
        }

        var values = coerce('values');
        var visible = coerce('visible', values.length > 0);

        if(visible) {
            coerce('label');
            coerce('tickvals');
            coerce('ticktext');
            coerce('tickformat');
            coerce('range');
            coerce('constraintrange');

            commonLength = Math.min(commonLength, dimensionOut.values.length);
        }

        dimensionOut._index = i;
        dimensionsOut.push(dimensionOut);
    }

    if(isFinite(commonLength)) {
        for(i = 0; i < dimensionsOut.length; i++) {
            dimensionOut = dimensionsOut[i];
            if(dimensionOut.visible && dimensionOut.values.length > commonLength) {
                dimensionOut.values = dimensionOut.values.slice(0, commonLength);
            }
        }
    }

    return dimensionsOut;
}

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var dimensions = dimensionsDefaults(traceIn, traceOut);

    handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);

    coerce('domain.x');
    coerce('domain.y');

    if(!Array.isArray(dimensions) || !dimensions.length) {
        traceOut.visible = false;
    }

    // make default font size 10px,
    // scale linearly with global font size
    var fontDflt = {
        family: layout.font.family,
        size: Math.round(layout.font.size * (10 / 12)),
        color: layout.font.color
    };

    Lib.coerceFont(coerce, 'labelfont', fontDflt);
    Lib.coerceFont(coerce, 'tickfont', fontDflt);
    Lib.coerceFont(coerce, 'rangefont', fontDflt);
};

},{"../../components/colorscale/defaults":242,"../../components/colorscale/has_colorscale":246,"../../lib":353,"./attributes":475,"./constants":479}],481:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Parcoords = {};

Parcoords.attributes = require('./attributes');
Parcoords.supplyDefaults = require('./defaults');
Parcoords.calc = require('./calc');
Parcoords.plot = require('./plot');
Parcoords.colorbar = require('./colorbar');

Parcoords.moduleType = 'trace';
Parcoords.name = 'parcoords';
Parcoords.basePlotModule = require('./base_plot');
Parcoords.categories = ['gl', 'noOpacity'];
Parcoords.meta = {
    
};

module.exports = Parcoords;

},{"./attributes":475,"./base_plot":476,"./calc":477,"./colorbar":478,"./defaults":480,"./plot":484}],482:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var createREGL = require('regl');

var verticalPadding = require('./constants').verticalPadding;
var vertexShaderSource = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec4 p0, p1, p2, p3,\n               p4, p5, p6, p7,\n               p8, p9, pa, pb,\n               pc, pd, pe;\n\nattribute vec4 pf;\n\nuniform mat4 dim1A, dim2A, dim1B, dim2B, dim1C, dim2C, dim1D, dim2D,\n             loA, hiA, loB, hiB, loC, hiC, loD, hiD;\n\nuniform vec2 resolution,\n             viewBoxPosition,\n             viewBoxSize;\n\nuniform sampler2D palette;\n\nuniform vec2 colorClamp;\n\nuniform float scatter;\n\nvarying vec4 fragColor;\n\nvec4 zero = vec4(0, 0, 0, 0);\nvec4 unit = vec4(1, 1, 1, 1);\nvec2 xyProjection = vec2(1, 1);\n\nmat4 mclamp(mat4 m, mat4 lo, mat4 hi) {\n    return mat4(clamp(m[0], lo[0], hi[0]),\n                clamp(m[1], lo[1], hi[1]),\n                clamp(m[2], lo[2], hi[2]),\n                clamp(m[3], lo[3], hi[3]));\n}\n\nbool mshow(mat4 p, mat4 lo, mat4 hi) {\n    return mclamp(p, lo, hi) == p;\n}\n\nfloat val(mat4 p, mat4 v) {\n    return dot(matrixCompMult(p, v) * unit, unit);\n}\n\nvoid main() {\n\n    float x = 0.5 * sign(pf[3]) + 0.5;\n    float prominence = abs(pf[3]);\n    float depth = 1.0 - prominence;\n\n    mat4 pA = mat4(p0, p1, p2, p3);\n    mat4 pB = mat4(p4, p5, p6, p7);\n    mat4 pC = mat4(p8, p9, pa, pb);\n    mat4 pD = mat4(pc, pd, pe, abs(pf));\n\n    float show = float(mshow(pA, loA, hiA) &&\n                       mshow(pB, loB, hiB) &&\n                       mshow(pC, loC, hiC) &&\n                       mshow(pD, loD, hiD));\n\n    vec2 yy = show * vec2(val(pA, dim2A) + val(pB, dim2B) + val(pC, dim2C) + val(pD, dim2D),\n                          val(pA, dim1A) + val(pB, dim1B) + val(pC, dim1C) + val(pD, dim1D));\n\n    vec2 dimensionToggle = vec2(x, 1.0 - x);\n\n    vec2 scatterToggle = vec2(scatter, 1.0 - scatter);\n\n    float y = dot(yy, dimensionToggle);\n    mat2 xy = mat2(viewBoxSize * yy + dimensionToggle, viewBoxSize * vec2(x, y));\n\n    vec2 viewBoxXY = viewBoxPosition + xy * scatterToggle;\n\n    float depthOrHide = depth + 2.0 * (1.0 - show);\n\n    gl_Position = vec4(\n        xyProjection * (2.0 * viewBoxXY / resolution - 1.0),\n        depthOrHide,\n        1.0\n    );\n\n    // visible coloring\n    float clampedColorIndex = clamp((prominence - colorClamp[0]) / (colorClamp[1] - colorClamp[0]), 0.0, 1.0);\n    fragColor = texture2D(palette, vec2((clampedColorIndex * 255.0 + 0.5) / 256.0, 0.5));\n}\n";
var pickVertexShaderSource = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec4 p0, p1, p2, p3,\n               p4, p5, p6, p7,\n               p8, p9, pa, pb,\n               pc, pd, pe;\n\nattribute vec4 pf;\n\nuniform mat4 dim1A, dim2A, dim1B, dim2B, dim1C, dim2C, dim1D, dim2D,\n             loA, hiA, loB, hiB, loC, hiC, loD, hiD;\n\nuniform vec2 resolution,\n             viewBoxPosition,\n             viewBoxSize;\n\nuniform sampler2D palette;\n\nuniform vec2 colorClamp;\n\nuniform float scatter;\n\nvarying vec4 fragColor;\n\nvec4 zero = vec4(0, 0, 0, 0);\nvec4 unit = vec4(1, 1, 1, 1);\nvec2 xyProjection = vec2(1, 1);\n\nmat4 mclamp(mat4 m, mat4 lo, mat4 hi) {\n    return mat4(clamp(m[0], lo[0], hi[0]),\n                clamp(m[1], lo[1], hi[1]),\n                clamp(m[2], lo[2], hi[2]),\n                clamp(m[3], lo[3], hi[3]));\n}\n\nbool mshow(mat4 p, mat4 lo, mat4 hi) {\n    return mclamp(p, lo, hi) == p;\n}\n\nfloat val(mat4 p, mat4 v) {\n    return dot(matrixCompMult(p, v) * unit, unit);\n}\n\nvoid main() {\n\n    float x = 0.5 * sign(pf[3]) + 0.5;\n    float prominence = abs(pf[3]);\n    float depth = 1.0 - prominence;\n\n    mat4 pA = mat4(p0, p1, p2, p3);\n    mat4 pB = mat4(p4, p5, p6, p7);\n    mat4 pC = mat4(p8, p9, pa, pb);\n    mat4 pD = mat4(pc, pd, pe, abs(pf));\n\n    float show = float(mshow(pA, loA, hiA) &&\n                       mshow(pB, loB, hiB) &&\n                       mshow(pC, loC, hiC) &&\n                       mshow(pD, loD, hiD));\n\n    vec2 yy = show * vec2(val(pA, dim2A) + val(pB, dim2B) + val(pC, dim2C) + val(pD, dim2D),\n                          val(pA, dim1A) + val(pB, dim1B) + val(pC, dim1C) + val(pD, dim1D));\n\n    vec2 dimensionToggle = vec2(x, 1.0 - x);\n\n    vec2 scatterToggle = vec2(scatter, 1.0 - scatter);\n\n    float y = dot(yy, dimensionToggle);\n    mat2 xy = mat2(viewBoxSize * yy + dimensionToggle, viewBoxSize * vec2(x, y));\n\n    vec2 viewBoxXY = viewBoxPosition + xy * scatterToggle;\n\n    float depthOrHide = depth + 2.0 * (1.0 - show);\n\n    gl_Position = vec4(\n        xyProjection * (2.0 * viewBoxXY / resolution - 1.0),\n        depthOrHide,\n        1.0\n    );\n\n    // pick coloring\n    fragColor = vec4(pf.rgb, 1.0);\n}\n";
var fragmentShaderSource = "precision lowp float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n    gl_FragColor = fragColor;\n}\n";

var depthLimitEpsilon = 1e-6; // don't change; otherwise near/far plane lines are lost

var gpuDimensionCount = 64;
var sectionVertexCount = 2;
var vec4NumberCount = 4;

var contextColor = [119, 119, 119]; // middle gray to not drawn the focus; looks good on a black or white background

var dummyPixel = new Uint8Array(4);
var pickPixel = new Uint8Array(4);

function ensureDraw(regl) {
    regl.read({
        x: 0,
        y: 0,
        width: 1,
        height: 1,
        data: dummyPixel
    });
}

function clear(regl, x, y, width, height) {
    var gl = regl._gl;
    gl.enable(gl.SCISSOR_TEST);
    gl.scissor(x, y, width, height);
    regl.clear({color: [0, 0, 0, 0], depth: 1}); // clearing is done in scissored panel only
}

function renderBlock(regl, glAes, renderState, blockLineCount, sampleCount, item) {

    var rafKey = item.key;

    function render(blockNumber) {

        var count;

        count = Math.min(blockLineCount, sampleCount - blockNumber * blockLineCount);

        item.offset = sectionVertexCount * blockNumber * blockLineCount;
        item.count = sectionVertexCount * count;
        if(blockNumber === 0) {
            window.cancelAnimationFrame(renderState.currentRafs[rafKey]); // stop drawing possibly stale glyphs before clearing
            delete renderState.currentRafs[rafKey];
            clear(regl, item.scissorX, item.scissorY, item.scissorWidth, item.viewBoxSize[1]);
        }

        if(renderState.clearOnly) {
            return;
        }

        glAes(item);

        if(blockNumber * blockLineCount + count < sampleCount) {
            renderState.currentRafs[rafKey] = window.requestAnimationFrame(function() {
                render(blockNumber + 1);
            });
        }

        renderState.drawCompleted = false;
    }

    if(!renderState.drawCompleted) {
        ensureDraw(regl);
        renderState.drawCompleted = true;
    }

    // start with rendering item 0; recursion handles the rest
    render(0);
}

function adjustDepth(d) {
    // WebGL matrix operations use floats with limited precision, potentially causing a number near a border of [0, 1]
    // to end up slightly outside the border. With an epsilon, we reduce the chance that a line gets clipped by the
    // near or the far plane.
    return Math.max(depthLimitEpsilon, Math.min(1 - depthLimitEpsilon, d));
}

function palette(unitToColor, context, opacity) {
    var result = [];
    for(var j = 0; j < 256; j++) {
        var c = unitToColor(j / 255);
        result.push((context ? contextColor : c).concat(opacity));
    }

    return result;
}

// Maps the sample index [0...sampleCount - 1] to a range of [0, 1] as the shader expects colors in the [0, 1] range.
// but first it shifts the sample index by 0, 8 or 16 bits depending on rgbIndex [0..2]
// with the end result that each line will be of a unique color, making it possible for the pick handler
// to uniquely identify which line is hovered over (bijective mapping).
// The inverse, i.e. readPixel is invoked from 'parcoords.js'
function calcPickColor(j, rgbIndex) {
    return (j >>> 8 * rgbIndex) % 256 / 255;
}

function makePoints(sampleCount, dimensionCount, dimensions, color) {

    var points = [];
    for(var j = 0; j < sampleCount; j++) {
        for(var i = 0; i < gpuDimensionCount; i++) {
            points.push(i < dimensionCount ?
                dimensions[i].paddedUnitValues[j] :
                i === (gpuDimensionCount - 1) ?
                    adjustDepth(color[j]) :
                    i >= gpuDimensionCount - 4 ?
                        calcPickColor(j, gpuDimensionCount - 2 - i) :
                        0.5);
        }
    }

    return points;
}

function makeVecAttr(sampleCount, points, vecIndex) {

    var i, j, k;
    var pointPairs = [];

    for(j = 0; j < sampleCount; j++) {
        for(k = 0; k < sectionVertexCount; k++) {
            for(i = 0; i < vec4NumberCount; i++) {
                pointPairs.push(points[j * gpuDimensionCount + vecIndex * vec4NumberCount + i]);
                if(vecIndex * vec4NumberCount + i === gpuDimensionCount - 1 && k % 2 === 0) {
                    pointPairs[pointPairs.length - 1] *= -1;
                }
            }
        }
    }

    return pointPairs;
}

function makeAttributes(sampleCount, points) {

    var vecIndices = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
    var vectors = vecIndices.map(function(vecIndex) {return makeVecAttr(sampleCount, points, vecIndex);});

    var attributes = {};
    vectors.forEach(function(v, vecIndex) {
        attributes['p' + vecIndex.toString(16)] = v;
    });

    return attributes;
}

function valid(i, offset, panelCount) {
    return i + offset <= panelCount;
}

module.exports = function(canvasGL, lines, canvasWidth, canvasHeight, initialDimensions, initialPanels, unitToColor, context, pick, scatter) {

    var renderState = {
        currentRafs: {},
        drawCompleted: true,
        clearOnly: false
    };

    var initialDims = initialDimensions.slice();

    var dimensionCount = initialDims.length;
    var sampleCount = initialDims[0] ? initialDims[0].values.length : 0;

    var focusAlphaBlending = context;

    var color = pick ? lines.color.map(function(_, i) {return i / lines.color.length;}) : lines.color;
    var contextOpacity = Math.max(1 / 255, Math.pow(1 / color.length, 1 / 3));
    var overdrag = lines.canvasOverdrag;

    var panelCount = initialPanels.length;

    var points = makePoints(sampleCount, dimensionCount, initialDims, color);
    var attributes = makeAttributes(sampleCount, points);

    var regl = createREGL({
        canvas: canvasGL,
        attributes: {
            preserveDrawingBuffer: true,
            antialias: !pick
        }
    });

    var paletteTexture = regl.texture({
        shape: [256, 1],
        format: 'rgba',
        type: 'uint8',
        mag: 'nearest',
        min: 'nearest',
        data: palette(unitToColor, context, Math.round((context ? contextOpacity : 1) * 255))
    });

    var glAes = regl({

        profile: false,

        blend: {
            enable: focusAlphaBlending,
            func: {
                srcRGB: 'src alpha',
                dstRGB: 'one minus src alpha',
                srcAlpha: 1,
                dstAlpha: 1 // 'one minus src alpha'
            },
            equation: {
                rgb: 'add',
                alpha: 'add'
            },
            color: [0, 0, 0, 0]
        },

        depth: {
            enable: !focusAlphaBlending,
            mask: true,
            func: 'less',
            range: [0, 1]
        },

        // for polygons
        cull: {
            enable: true,
            face: 'back'
        },

        scissor: {
            enable: true,
            box: {
                x: regl.prop('scissorX'),
                y: regl.prop('scissorY'),
                width: regl.prop('scissorWidth'),
                height: regl.prop('scissorHeight')
            }
        },

        dither: false,

        vert: pick ? pickVertexShaderSource : vertexShaderSource,

        frag: fragmentShaderSource,

        primitive: 'lines',
        lineWidth: 1,
        attributes: attributes,
        uniforms: {
            resolution: regl.prop('resolution'),
            viewBoxPosition: regl.prop('viewBoxPosition'),
            viewBoxSize: regl.prop('viewBoxSize'),
            dim1A: regl.prop('dim1A'),
            dim2A: regl.prop('dim2A'),
            dim1B: regl.prop('dim1B'),
            dim2B: regl.prop('dim2B'),
            dim1C: regl.prop('dim1C'),
            dim2C: regl.prop('dim2C'),
            dim1D: regl.prop('dim1D'),
            dim2D: regl.prop('dim2D'),
            loA: regl.prop('loA'),
            hiA: regl.prop('hiA'),
            loB: regl.prop('loB'),
            hiB: regl.prop('hiB'),
            loC: regl.prop('loC'),
            hiC: regl.prop('hiC'),
            loD: regl.prop('loD'),
            hiD: regl.prop('hiD'),
            palette: paletteTexture,
            colorClamp: regl.prop('colorClamp'),
            scatter: regl.prop('scatter')
        },
        offset: regl.prop('offset'),
        count: regl.prop('count')
    });

    var colorClamp = [0, 1];

    function setColorDomain(unitDomain) {
        colorClamp[0] = unitDomain[0];
        colorClamp[1] = unitDomain[1];
    }

    var previousAxisOrder = [];

    function makeItem(i, ii, x, y, panelSizeX, canvasPanelSizeY, crossfilterDimensionIndex, scatter, I, leftmost, rightmost) {
        var loHi, abcd, d, index;
        var leftRight = [i, ii];
        var filterEpsilon = verticalPadding / canvasPanelSizeY;

        var dims = [0, 1].map(function() {return [0, 1, 2, 3].map(function() {return new Float32Array(16);});});
        var lims = [0, 1].map(function() {return [0, 1, 2, 3].map(function() {return new Float32Array(16);});});

        for(loHi = 0; loHi < 2; loHi++) {
            index = leftRight[loHi];
            for(abcd = 0; abcd < 4; abcd++) {
                for(d = 0; d < 16; d++) {
                    var dimP = d + 16 * abcd;
                    dims[loHi][abcd][d] = d + 16 * abcd === index ? 1 : 0;
                    lims[loHi][abcd][d] = (!context && valid(d, 16 * abcd, panelCount) ? initialDims[dimP === 0 ? 0 : 1 + ((dimP - 1) % (initialDims.length - 1))].filter[loHi] : loHi) + (2 * loHi - 1) * filterEpsilon;
                }
            }
        }

        return {
            key: crossfilterDimensionIndex,
            resolution: [canvasWidth, canvasHeight],
            viewBoxPosition: [x + overdrag, y],
            viewBoxSize: [panelSizeX, canvasPanelSizeY],
            i: i,
            ii: ii,

            dim1A: dims[0][0],
            dim1B: dims[0][1],
            dim1C: dims[0][2],
            dim1D: dims[0][3],
            dim2A: dims[1][0],
            dim2B: dims[1][1],
            dim2C: dims[1][2],
            dim2D: dims[1][3],

            loA: lims[0][0],
            loB: lims[0][1],
            loC: lims[0][2],
            loD: lims[0][3],
            hiA: lims[1][0],
            hiB: lims[1][1],
            hiC: lims[1][2],
            hiD: lims[1][3],

            colorClamp: colorClamp,
            scatter: scatter || 0,
            scissorX: I === leftmost ? 0 : x + overdrag,
            scissorWidth: (I === rightmost ? canvasWidth - x + overdrag : panelSizeX + 0.5) + (I === leftmost ? x + overdrag : 0),
            scissorY: y,
            scissorHeight: canvasPanelSizeY
        };
    }

    function renderGLParcoords(panels, setChanged, clearOnly) {

        var I;

        var leftmost, rightmost, lowestX = Infinity, highestX = -Infinity;

        for(I = 0; I < panelCount; I++) {
            if(panels[I].dim2.canvasX > highestX) {
                highestX = panels[I].dim2.canvasX;
                rightmost = I;
            }
            if(panels[I].dim1.canvasX < lowestX) {
                lowestX = panels[I].dim1.canvasX;
                leftmost = I;
            }
        }

        if(panelCount === 0) {
            // clear canvas here, as the panel iteration below will not enter the loop body
            clear(regl, 0, 0, canvasWidth, canvasHeight);
        }

        for(I = 0; I < panelCount; I++) {
            var panel = panels[I];
            var dim1 = panel.dim1;
            var i = dim1.crossfilterDimensionIndex;
            var x = panel.canvasX;
            var y = panel.canvasY;
            var dim2 = panel.dim2;
            var ii = dim2.crossfilterDimensionIndex;
            var panelSizeX = panel.panelSizeX;
            var panelSizeY = panel.panelSizeY;
            var xTo = x + panelSizeX;
            if(setChanged || !previousAxisOrder[i] || previousAxisOrder[i][0] !== x || previousAxisOrder[i][1] !== xTo) {
                previousAxisOrder[i] = [x, xTo];
                var item = makeItem(i, ii, x, y, panelSizeX, panelSizeY, dim1.crossfilterDimensionIndex, scatter || dim1.scatter ? 1 : 0, I, leftmost, rightmost);
                renderState.clearOnly = clearOnly;
                renderBlock(regl, glAes, renderState, setChanged ? lines.blockLineCount : sampleCount, sampleCount, item);
            }
        }
    }

    function readPixel(canvasX, canvasY) {
        regl.read({
            x: canvasX,
            y: canvasY,
            width: 1,
            height: 1,
            data: pickPixel
        });
        return pickPixel;
    }

    function readPixels(canvasX, canvasY, width, height) {
        var pixelArray = new Uint8Array(4 * width * height);
        regl.read({
            x: canvasX,
            y: canvasY,
            width: width,
            height: height,
            data: pixelArray
        });
        return pixelArray;
    }

    return {
        setColorDomain: setColorDomain,
        render: renderGLParcoords,
        readPixel: readPixel,
        readPixels: readPixels,
        destroy: regl.destroy
    };
};

},{"./constants":479,"regl":179}],483:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var lineLayerMaker = require('./lines');
var c = require('./constants');
var Lib = require('../../lib');
var d3 = require('d3');
var Drawing = require('../../components/drawing');
var keyFun = require('../../lib/gup').keyFun;
var repeat = require('../../lib/gup').repeat;
var unwrap = require('../../lib/gup').unwrap;

function visible(dimension) {return !('visible' in dimension) || dimension.visible;}

function dimensionExtent(dimension) {

    var lo = dimension.range ? dimension.range[0] : d3.min(dimension.values);
    var hi = dimension.range ? dimension.range[1] : d3.max(dimension.values);

    if(isNaN(lo) || !isFinite(lo)) {
        lo = 0;
    }

    if(isNaN(hi) || !isFinite(hi)) {
        hi = 0;
    }

    // avoid a degenerate (zero-width) domain
    if(lo === hi) {
        if(lo === void(0)) {
            lo = 0;
            hi = 1;
        } else if(lo === 0) {
            // no use to multiplying zero, so add/subtract in this case
            lo -= 1;
            hi += 1;
        } else {
            // this keeps the range in the order of magnitude of the data
            lo *= 0.9;
            hi *= 1.1;
        }
    }

    return [lo, hi];
}

function ordinalScaleSnap(scale, v) {
    var i, a, prevDiff, prevValue, diff;
    for(i = 0, a = scale.range(), prevDiff = Infinity, prevValue = a[0], diff; i < a.length; i++) {
        if((diff = Math.abs(a[i] - v)) > prevDiff) {
            return prevValue;
        }
        prevDiff = diff;
        prevValue = a[i];
    }
    return a[a.length - 1];
}

function toText(formatter, texts) {
    return function(v, i) {
        if(texts) {
            var text = texts[i];
            if(text === null || text === undefined) {
                return formatter(v);
            } else {
                return text;
            }
        } else {
            return formatter(v);
        }
    };
}

function domainScale(height, padding, dimension) {
    var extent = dimensionExtent(dimension);
    var texts = dimension.ticktext;
    return dimension.tickvals ?
        d3.scale.ordinal()
            .domain(dimension.tickvals.map(toText(d3.format(dimension.tickformat), texts)))
            .range(dimension.tickvals
                .map(function(d) {return (d - extent[0]) / (extent[1] - extent[0]);})
                .map(function(d) {return (height - padding + d * (padding - (height - padding)));})) :
        d3.scale.linear()
            .domain(extent)
            .range([height - padding, padding]);
}

function unitScale(height, padding) {return d3.scale.linear().range([height - padding, padding]);}
function domainToUnitScale(dimension) {return d3.scale.linear().domain(dimensionExtent(dimension));}

function ordinalScale(dimension) {
    var extent = dimensionExtent(dimension);
    return dimension.tickvals && d3.scale.ordinal()
            .domain(dimension.tickvals)
            .range(dimension.tickvals.map(function(d) {return (d - extent[0]) / (extent[1] - extent[0]);}));
}

function unitToColorScale(cscale) {

    var colorStops = cscale.map(function(d) {return d[0];});
    var colorStrings = cscale.map(function(d) {return d[1];});
    var colorTuples = colorStrings.map(function(c) {return d3.rgb(c);});
    var prop = function(n) {return function(o) {return o[n];};};

    // We can't use d3 color interpolation as we may have non-uniform color palette raster
    // (various color stop distances).
    var polylinearUnitScales = 'rgb'.split('').map(function(key) {
        return d3.scale.linear()
            .clamp(true)
            .domain(colorStops)
            .range(colorTuples.map(prop(key)));
    });

    return function(d) {
        return polylinearUnitScales.map(function(s) {
            return s(d);
        });
    };
}

function model(layout, d, i) {
    var cd0 = unwrap(d),
        trace = cd0.trace,
        lineColor = cd0.lineColor,
        cscale = cd0.cscale,
        line = trace.line,
        domain = trace.domain,
        dimensions = trace.dimensions,
        width = layout.width,
        labelFont = trace.labelfont,
        tickFont = trace.tickfont,
        rangeFont = trace.rangefont;

    var lines = Lib.extendDeep({}, line, {
        color: lineColor.map(domainToUnitScale({values: lineColor, range: [line.cmin, line.cmax]})),
        blockLineCount: c.blockLineCount,
        canvasOverdrag: c.overdrag * c.canvasPixelRatio
    });

    var groupWidth = Math.floor(width * (domain.x[1] - domain.x[0]));
    var groupHeight = Math.floor(layout.height * (domain.y[1] - domain.y[0]));

    var pad = layout.margin || {l: 80, r: 80, t: 100, b: 80};
    var rowContentWidth = groupWidth;
    var rowHeight = groupHeight;

    return {
        key: i,
        colCount: dimensions.filter(visible).length,
        dimensions: dimensions,
        tickDistance: c.tickDistance,
        unitToColor: unitToColorScale(cscale),
        lines: lines,
        labelFont: labelFont,
        tickFont: tickFont,
        rangeFont: rangeFont,
        translateX: domain.x[0] * width,
        translateY: layout.height - domain.y[1] * layout.height,
        pad: pad,
        canvasWidth: rowContentWidth * c.canvasPixelRatio + 2 * lines.canvasOverdrag,
        canvasHeight: rowHeight * c.canvasPixelRatio,
        width: rowContentWidth,
        height: rowHeight,
        canvasPixelRatio: c.canvasPixelRatio
    };
}

function viewModel(model) {

    var width = model.width;
    var height = model.height;
    var dimensions = model.dimensions;
    var canvasPixelRatio = model.canvasPixelRatio;

    var xScale = function(d) {return width * d / Math.max(1, model.colCount - 1);};

    var unitPad = c.verticalPadding / (height * canvasPixelRatio);
    var unitPadScale = (1 - 2 * unitPad);
    var paddedUnitScale = function(d) {return unitPad + unitPadScale * d;};

    var viewModel = {
        key: model.key,
        xScale: xScale,
        model: model
    };

    var uniqueKeys = {};

    viewModel.dimensions = dimensions.filter(visible).map(function(dimension, i) {
        var domainToUnit = domainToUnitScale(dimension);
        var foundKey = uniqueKeys[dimension.label];
        uniqueKeys[dimension.label] = (foundKey || 0) + 1;
        var key = dimension.label + (foundKey ? '__' + foundKey : '');
        return {
            key: key,
            label: dimension.label,
            tickFormat: dimension.tickformat,
            tickvals: dimension.tickvals,
            ticktext: dimension.ticktext,
            ordinal: !!dimension.tickvals,
            scatter: c.scatter || dimension.scatter,
            xIndex: i,
            crossfilterDimensionIndex: i,
            visibleIndex: dimension._index,
            height: height,
            values: dimension.values,
            paddedUnitValues: dimension.values.map(domainToUnit).map(paddedUnitScale),
            xScale: xScale,
            x: xScale(i),
            canvasX: xScale(i) * canvasPixelRatio,
            unitScale: unitScale(height, c.verticalPadding),
            domainScale: domainScale(height, c.verticalPadding, dimension),
            ordinalScale: ordinalScale(dimension),
            domainToUnitScale: domainToUnit,
            filter: dimension.constraintrange ? dimension.constraintrange.map(domainToUnit) : [0, 1],
            parent: viewModel,
            model: model
        };
    });

    return viewModel;
}

function lineLayerModel(vm) {
    return c.layers.map(function(key) {
        return {
            key: key,
            context: key === 'contextLineLayer',
            pick: key === 'pickLineLayer',
            viewModel: vm,
            model: vm.model
        };
    });
}

function styleExtentTexts(selection) {
    selection
        .classed(c.cn.axisExtentText, true)
        .attr('text-anchor', 'middle')
        .style('cursor', 'default')
        .style('user-select', 'none');
}

module.exports = function(root, svg, styledData, layout, callbacks) {

    var domainBrushing = false;
    var linePickActive = true;

    function enterSvgDefs(root) {
        var defs = root.selectAll('defs')
            .data(repeat, keyFun);

        defs.enter()
            .append('defs');

        var filterBarPattern = defs.selectAll('#' + c.id.filterBarPattern)
            .data(repeat, keyFun);

        filterBarPattern.enter()
            .append('pattern')
            .attr('id', c.id.filterBarPattern)
            .attr('patternUnits', 'userSpaceOnUse');

        filterBarPattern
            .attr('x', -c.bar.width)
            .attr('width', c.bar.capturewidth)
            .attr('height', function(d) {return d.model.height;});

        var filterBarPatternGlyph = filterBarPattern.selectAll('rect')
            .data(repeat, keyFun);

        filterBarPatternGlyph.enter()
            .append('rect')
            .attr('shape-rendering', 'crispEdges');

        filterBarPatternGlyph
            .attr('height', function(d) {return d.model.height;})
            .attr('width', c.bar.width)
            .attr('x', c.bar.width / 2)
            .attr('fill', c.bar.fillcolor)
            .attr('fill-opacity', c.bar.fillopacity)
            .attr('stroke', c.bar.strokecolor)
            .attr('stroke-opacity', c.bar.strokeopacity)
            .attr('stroke-width', c.bar.strokewidth);
    }

    var vm = styledData
        .filter(function(d) { return unwrap(d).trace.visible; })
        .map(model.bind(0, layout))
        .map(viewModel);

    root.selectAll('.' + c.cn.parcoordsLineLayers).remove();

    var parcoordsLineLayers = root.selectAll('.' + c.cn.parcoordsLineLayers)
        .data(vm, keyFun);

    parcoordsLineLayers.enter()
        .insert('div', '.' + svg.attr('class').split(' ').join(' .')) // not hardcoding .main-svg
        .classed(c.cn.parcoordsLineLayers, true)
        .style('box-sizing', 'content-box');

    parcoordsLineLayers
        .style('transform', function(d) {
            return 'translate(' + (d.model.translateX - c.overdrag) + 'px,' + d.model.translateY + 'px)';
        });

    var parcoordsLineLayer = parcoordsLineLayers.selectAll('.' + c.cn.parcoordsLineLayer)
        .data(lineLayerModel, keyFun);

    var tweakables = {renderers: [], dimensions: []};

    var lastHovered = null;

    parcoordsLineLayer.enter()
        .append('canvas')
        .attr('class', function(d) {return c.cn.parcoordsLineLayer + ' ' + (d.context ? 'context' : d.pick ? 'pick' : 'focus');})
        .style('box-sizing', 'content-box')
        .style('float', 'left')
        .style('clear', 'both')
        .style('left', 0)
        .style('overflow', 'visible')
        .style('position', 'absolute')
        .filter(function(d) {return d.pick;})
        .on('mousemove', function(d) {
            if(linePickActive && d.lineLayer && callbacks && callbacks.hover) {
                var event = d3.event;
                var cw = this.width;
                var ch = this.height;
                var pointer = d3.mouse(this);
                var x = pointer[0];
                var y = pointer[1];

                if(x < 0 || y < 0 || x >= cw || y >= ch) {
                    return;
                }
                var pixel = d.lineLayer.readPixel(x, ch - 1 - y);
                var found = pixel[3] !== 0;
                // inverse of the calcPickColor in `lines.js`; detailed comment there
                var curveNumber = found ? pixel[2] + 256 * (pixel[1] + 256 * pixel[0]) : null;
                var eventData = {
                    x: x,
                    y: y,
                    clientX: event.clientX,
                    clientY: event.clientY,
                    dataIndex: d.model.key,
                    curveNumber: curveNumber
                };
                if(curveNumber !== lastHovered) { // don't unnecessarily repeat the same hit (or miss)
                    if(found) {
                        callbacks.hover(eventData);
                    } else if(callbacks.unhover) {
                        callbacks.unhover(eventData);
                    }
                    lastHovered = curveNumber;
                }
            }
        });

    parcoordsLineLayer
        .style('margin', function(d) {
            var p = d.model.pad;
            return p.t + 'px ' + p.r + 'px ' + p.b + 'px ' + p.l + 'px';
        })
        .attr('width', function(d) {return d.model.canvasWidth;})
        .attr('height', function(d) {return d.model.canvasHeight;})
        .style('width', function(d) {return (d.model.width + 2 * c.overdrag) + 'px';})
        .style('height', function(d) {return d.model.height + 'px';})
        .style('opacity', function(d) {return d.pick ? 0.01 : 1;});

    svg.style('background', 'rgba(255, 255, 255, 0)');
    var parcoordsControlOverlay = svg.selectAll('.' + c.cn.parcoords)
        .data(vm, keyFun);

    parcoordsControlOverlay.exit().remove();

    parcoordsControlOverlay.enter()
        .append('g')
        .classed(c.cn.parcoords, true)
        .attr('overflow', 'visible')
        .style('box-sizing', 'content-box')
        .style('position', 'absolute')
        .style('left', 0)
        .style('overflow', 'visible')
        .style('shape-rendering', 'crispEdges')
        .style('pointer-events', 'none')
        .call(enterSvgDefs);

    parcoordsControlOverlay
        .attr('width', function(d) {return d.model.width + d.model.pad.l + d.model.pad.r;})
        .attr('height', function(d) {return d.model.height + d.model.pad.t + d.model.pad.b;})
        .attr('transform', function(d) {
            return 'translate(' + d.model.translateX + ',' + d.model.translateY + ')';
        });

    var parcoordsControlView = parcoordsControlOverlay.selectAll('.' + c.cn.parcoordsControlView)
        .data(repeat, keyFun);

    parcoordsControlView.enter()
        .append('g')
        .classed(c.cn.parcoordsControlView, true)
        .style('box-sizing', 'content-box');

    parcoordsControlView
        .attr('transform', function(d) {return 'translate(' + d.model.pad.l + ',' + d.model.pad.t + ')';});

    var yAxis = parcoordsControlView.selectAll('.' + c.cn.yAxis)
        .data(function(vm) {return vm.dimensions;}, keyFun);

    function someFiltersActive(view) {
        return view.dimensions.some(function(p) {return p.filter[0] !== 0 || p.filter[1] !== 1;});
    }

    function updatePanelLayoutParcoords(yAxis, vm) {
        var panels = vm.panels || (vm.panels = []);
        var yAxes = yAxis.each(function(d) {return d;})[vm.key].map(function(e) {return e.__data__;});
        var panelCount = yAxes.length - 1;
        var rowCount = 1;
        for(var row = 0; row < rowCount; row++) {
            for(var p = 0; p < panelCount; p++) {
                var panel = panels[p + row * panelCount] || (panels[p + row * panelCount] = {});
                var dim1 = yAxes[p];
                var dim2 = yAxes[p + 1];
                panel.dim1 = dim1;
                panel.dim2 = dim2;
                panel.canvasX = dim1.canvasX;
                panel.panelSizeX = dim2.canvasX - dim1.canvasX;
                panel.panelSizeY = vm.model.canvasHeight / rowCount;
                panel.y = row * panel.panelSizeY;
                panel.canvasY = vm.model.canvasHeight - panel.y - panel.panelSizeY;
            }
        }
    }

    function updatePanelLayoutScatter(yAxis, vm) {
        var panels = vm.panels || (vm.panels = []);
        var yAxes = yAxis.each(function(d) {return d;})[vm.key].map(function(e) {return e.__data__;});
        var panelCount = yAxes.length - 1;
        var rowCount = panelCount;
        for(var row = 0; row < panelCount; row++) {
            for(var p = 0; p < panelCount; p++) {
                var panel = panels[p + row * panelCount] || (panels[p + row * panelCount] = {});
                var dim1 = yAxes[p];
                var dim2 = yAxes[p + 1];
                panel.dim1 = yAxes[row + 1];
                panel.dim2 = dim2;
                panel.canvasX = dim1.canvasX;
                panel.panelSizeX = dim2.canvasX - dim1.canvasX;
                panel.panelSizeY = vm.model.canvasHeight / rowCount;
                panel.y = row * panel.panelSizeY;
                panel.canvasY = vm.model.canvasHeight - panel.y - panel.panelSizeY;
            }
        }
    }

    function updatePanelLayout(yAxis, vm) {
        return (c.scatter ? updatePanelLayoutScatter : updatePanelLayoutParcoords)(yAxis, vm);
    }

    yAxis.enter()
        .append('g')
        .classed(c.cn.yAxis, true)
        .each(function(d) {tweakables.dimensions.push(d);});

    parcoordsControlView.each(function(vm) {
        updatePanelLayout(yAxis, vm);
    });

    parcoordsLineLayer
        .each(function(d) {
            d.lineLayer = lineLayerMaker(this, d.model.lines, d.model.canvasWidth, d.model.canvasHeight, d.viewModel.dimensions, d.viewModel.panels, d.model.unitToColor, d.context, d.pick, c.scatter);
            d.viewModel[d.key] = d.lineLayer;
            tweakables.renderers.push(function() {d.lineLayer.render(d.viewModel.panels, true);});
            d.lineLayer.render(d.viewModel.panels, !d.context);
        });

    yAxis
        .attr('transform', function(d) {return 'translate(' + d.xScale(d.xIndex) + ', 0)';});

    yAxis
        .call(d3.behavior.drag()
            .origin(function(d) {return d;})
            .on('drag', function(d) {
                var p = d.parent;
                linePickActive = false;
                if(domainBrushing) {
                    return;
                }
                d.x = Math.max(-c.overdrag, Math.min(d.model.width + c.overdrag, d3.event.x));
                d.canvasX = d.x * d.model.canvasPixelRatio;
                yAxis
                    .sort(function(a, b) {return a.x - b.x;})
                    .each(function(dd, i) {
                        dd.xIndex = i;
                        dd.x = d === dd ? dd.x : dd.xScale(dd.xIndex);
                        dd.canvasX = dd.x * dd.model.canvasPixelRatio;
                    });

                updatePanelLayout(yAxis, p);

                yAxis.filter(function(dd) {return Math.abs(d.xIndex - dd.xIndex) !== 0;})
                    .attr('transform', function(d) {return 'translate(' + d.xScale(d.xIndex) + ', 0)';});
                d3.select(this).attr('transform', 'translate(' + d.x + ', 0)');
                yAxis.each(function(dd, i, ii) {if(ii === d.parent.key) p.dimensions[i] = dd;});
                p.contextLineLayer && p.contextLineLayer.render(p.panels, false, !someFiltersActive(p));
                p.focusLineLayer.render && p.focusLineLayer.render(p.panels);
            })
            .on('dragend', function(d) {
                var p = d.parent;
                if(domainBrushing) {
                    if(domainBrushing === 'ending') {
                        domainBrushing = false;
                    }
                    return;
                }
                d.x = d.xScale(d.xIndex);
                d.canvasX = d.x * d.model.canvasPixelRatio;
                updatePanelLayout(yAxis, p);
                d3.select(this)
                    .attr('transform', function(d) {return 'translate(' + d.x + ', 0)';});
                p.contextLineLayer && p.contextLineLayer.render(p.panels, false, !someFiltersActive(p));
                p.focusLineLayer && p.focusLineLayer.render(p.panels);
                p.pickLineLayer && p.pickLineLayer.render(p.panels, true);
                linePickActive = true;

                if(callbacks && callbacks.axesMoved) {
                    callbacks.axesMoved(p.key, p.dimensions.map(function(dd) {return dd.crossfilterDimensionIndex;}));
                }
            })
        );

    yAxis.exit()
        .remove();

    var axisOverlays = yAxis.selectAll('.' + c.cn.axisOverlays)
        .data(repeat, keyFun);

    axisOverlays.enter()
        .append('g')
        .classed(c.cn.axisOverlays, true);

    axisOverlays.selectAll('.' + c.cn.axis).remove();

    var axis = axisOverlays.selectAll('.' + c.cn.axis)
        .data(repeat, keyFun);

    axis.enter()
        .append('g')
        .classed(c.cn.axis, true);

    axis
        .each(function(d) {
            var wantedTickCount = d.model.height / d.model.tickDistance;
            var scale = d.domainScale;
            var sdom = scale.domain();
            d3.select(this)
                .call(d3.svg.axis()
                    .orient('left')
                    .tickSize(4)
                    .outerTickSize(2)
                    .ticks(wantedTickCount, d.tickFormat) // works for continuous scales only...
                    .tickValues(d.ordinal ? // and this works for ordinal scales
                        sdom :
                        null)
                    .tickFormat(d.ordinal ? function(d) {return d;} : null)
                    .scale(scale));
            Drawing.font(axis.selectAll('text'), d.model.tickFont);
        });

    axis
        .selectAll('.domain, .tick>line')
        .attr('fill', 'none')
        .attr('stroke', 'black')
        .attr('stroke-opacity', 0.25)
        .attr('stroke-width', '1px');

    axis
        .selectAll('text')
        .style('text-shadow', '1px 1px 1px #fff, -1px -1px 1px #fff, 1px -1px 1px #fff, -1px 1px 1px #fff')
        .style('cursor', 'default')
        .style('user-select', 'none');

    var axisHeading = axisOverlays.selectAll('.' + c.cn.axisHeading)
        .data(repeat, keyFun);

    axisHeading.enter()
        .append('g')
        .classed(c.cn.axisHeading, true);

    var axisTitle = axisHeading.selectAll('.' + c.cn.axisTitle)
        .data(repeat, keyFun);

    axisTitle.enter()
        .append('text')
        .classed(c.cn.axisTitle, true)
        .attr('text-anchor', 'middle')
        .style('cursor', 'ew-resize')
        .style('user-select', 'none')
        .style('pointer-events', 'auto');

    axisTitle
        .attr('transform', 'translate(0,' + -c.axisTitleOffset + ')')
        .text(function(d) {return d.label;})
        .each(function(d) {Drawing.font(axisTitle, d.model.labelFont);});

    var axisExtent = axisOverlays.selectAll('.' + c.cn.axisExtent)
        .data(repeat, keyFun);

    axisExtent.enter()
        .append('g')
        .classed(c.cn.axisExtent, true);

    var axisExtentTop = axisExtent.selectAll('.' + c.cn.axisExtentTop)
        .data(repeat, keyFun);

    axisExtentTop.enter()
        .append('g')
        .classed(c.cn.axisExtentTop, true);

    axisExtentTop
        .attr('transform', 'translate(' + 0 + ',' + -c.axisExtentOffset + ')');

    var axisExtentTopText = axisExtentTop.selectAll('.' + c.cn.axisExtentTopText)
        .data(repeat, keyFun);

    function formatExtreme(d) {
        return d.ordinal ? function() {return '';} : d3.format(d.tickFormat);
    }

    axisExtentTopText.enter()
        .append('text')
        .classed(c.cn.axisExtentTopText, true)
        .call(styleExtentTexts);

    axisExtentTopText
        .text(function(d) {return formatExtreme(d)(d.domainScale.domain().slice(-1)[0]);})
        .each(function(d) {Drawing.font(axisExtentTopText, d.model.rangeFont);});

    var axisExtentBottom = axisExtent.selectAll('.' + c.cn.axisExtentBottom)
        .data(repeat, keyFun);

    axisExtentBottom.enter()
        .append('g')
        .classed(c.cn.axisExtentBottom, true);

    axisExtentBottom
        .attr('transform', function(d) {return 'translate(' + 0 + ',' + (d.model.height + c.axisExtentOffset) + ')';});

    var axisExtentBottomText = axisExtentBottom.selectAll('.' + c.cn.axisExtentBottomText)
        .data(repeat, keyFun);

    axisExtentBottomText.enter()
        .append('text')
        .classed(c.cn.axisExtentBottomText, true)
        .attr('dy', '0.75em')
        .call(styleExtentTexts);

    axisExtentBottomText
        .text(function(d) {return formatExtreme(d)(d.domainScale.domain()[0]);})
        .each(function(d) {Drawing.font(axisExtentBottomText, d.model.rangeFont);});

    var axisBrush = axisOverlays.selectAll('.' + c.cn.axisBrush)
        .data(repeat, keyFun);

    var axisBrushEnter = axisBrush.enter()
        .append('g')
        .classed(c.cn.axisBrush, true);

    axisBrush
        .each(function(d) {
            if(!d.brush) {
                d.brush = d3.svg.brush()
                    .y(d.unitScale)
                    .on('brushstart', axisBrushStarted)
                    .on('brush', axisBrushMoved)
                    .on('brushend', axisBrushEnded);
                if(d.filter[0] !== 0 || d.filter[1] !== 1) {
                    d.brush.extent(d.filter);
                }
                d3.select(this).call(d.brush);
            }
        });

    axisBrushEnter
        .selectAll('rect')
        .attr('x', -c.bar.capturewidth / 2)
        .attr('width', c.bar.capturewidth);

    axisBrushEnter
        .selectAll('rect.extent')
        .attr('fill', 'url(#' + c.id.filterBarPattern + ')')
        .style('cursor', 'ns-resize')
        .filter(function(d) {return d.filter[0] === 0 && d.filter[1] === 1;})
        .attr('y', -100); //  // zero-size rectangle pointer issue workaround

    axisBrushEnter
        .selectAll('.resize rect')
        .attr('height', c.bar.handleheight)
        .attr('opacity', 0)
        .style('visibility', 'visible');

    axisBrushEnter
        .selectAll('.resize.n rect')
        .style('cursor', 'n-resize')
        .attr('y', c.bar.handleoverlap - c.bar.handleheight);

    axisBrushEnter
        .selectAll('.resize.s rect')
        .style('cursor', 's-resize')
        .attr('y', c.bar.handleoverlap);

    var justStarted = false;
    var contextShown = false;

    function axisBrushStarted() {
        justStarted = true;
        domainBrushing = true;
    }

    function axisBrushMoved(dimension) {
        linePickActive = false;
        var p = dimension.parent;
        var extent = dimension.brush.extent();
        var dimensions = p.dimensions;
        var filter = dimensions[dimension.xIndex].filter;
        var reset = justStarted && (extent[0] === extent[1]);
        if(reset) {
            dimension.brush.clear();
            d3.select(this).select('rect.extent').attr('y', -100); // zero-size rectangle pointer issue workaround
        }
        var newExtent = reset ? [0, 1] : extent.slice();
        if(newExtent[0] !== filter[0] || newExtent[1] !== filter[1]) {
            dimensions[dimension.xIndex].filter = newExtent;
            p.focusLineLayer && p.focusLineLayer.render(p.panels, true);
            var filtersActive = someFiltersActive(p);
            if(!contextShown && filtersActive) {
                p.contextLineLayer && p.contextLineLayer.render(p.panels, true);
                contextShown = true;
            } else if(contextShown && !filtersActive) {
                p.contextLineLayer && p.contextLineLayer.render(p.panels, true, true);
                contextShown = false;
            }
        }
        justStarted = false;
    }

    function axisBrushEnded(dimension) {
        var p = dimension.parent;
        var extent = dimension.brush.extent();
        var empty = extent[0] === extent[1];
        var dimensions = p.dimensions;
        var f = dimensions[dimension.xIndex].filter;
        if(!empty && dimension.ordinal) {
            f[0] = ordinalScaleSnap(dimension.ordinalScale, f[0]);
            f[1] = ordinalScaleSnap(dimension.ordinalScale, f[1]);
            if(f[0] === f[1]) {
                f[0] = Math.max(0, f[0] - 0.05);
                f[1] = Math.min(1, f[1] + 0.05);
            }
            d3.select(this).transition().duration(150).call(dimension.brush.extent(f));
            p.focusLineLayer.render(p.panels, true);
        }
        p.pickLineLayer && p.pickLineLayer.render(p.panels, true);
        linePickActive = true;
        domainBrushing = 'ending';
        if(callbacks && callbacks.filterChanged) {
            var invScale = dimension.domainToUnitScale.invert;

            // update gd.data as if a Plotly.restyle were fired
            var newRange = f.map(invScale);
            callbacks.filterChanged(p.key, dimension.visibleIndex, newRange);
        }
    }

    return tweakables;
};

},{"../../components/drawing":257,"../../lib":353,"../../lib/gup":350,"./constants":479,"./lines":482,"d3":62}],484:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var parcoords = require('./parcoords');

module.exports = function plot(gd, cdparcoords) {

    var fullLayout = gd._fullLayout;
    var svg = fullLayout._paper;
    var root = fullLayout._paperdiv;

    var gdDimensions = {};
    var gdDimensionsOriginalOrder = {};

    var size = fullLayout._size;

    cdparcoords.forEach(function(d, i) {
        gdDimensions[i] = gd.data[i].dimensions;
        gdDimensionsOriginalOrder[i] = gd.data[i].dimensions.slice();
    });

    var filterChanged = function(i, originalDimensionIndex, newRange) {

        // Have updated `constraintrange` data on `gd.data` and raise `Plotly.restyle` event
        // without having to incur heavy UI blocking due to an actual `Plotly.restyle` call

        var gdDimension = gdDimensionsOriginalOrder[i][originalDimensionIndex];
        var gdConstraintRange = gdDimension.constraintrange;

        if(!gdConstraintRange || gdConstraintRange.length !== 2) {
            gdConstraintRange = gdDimension.constraintrange = [];
        }
        gdConstraintRange[0] = newRange[0];
        gdConstraintRange[1] = newRange[1];

        gd.emit('plotly_restyle');
    };

    var hover = function(eventData) {
        gd.emit('plotly_hover', eventData);
    };

    var unhover = function(eventData) {
        gd.emit('plotly_unhover', eventData);
    };

    var axesMoved = function(i, visibleIndices) {

        // Have updated order data on `gd.data` and raise `Plotly.restyle` event
        // without having to incur heavy UI blocking due to an actual `Plotly.restyle` call

        function visible(dimension) {return !('visible' in dimension) || dimension.visible;}

        function newIdx(visibleIndices, orig, dim) {
            var origIndex = orig.indexOf(dim);
            var currentIndex = visibleIndices.indexOf(origIndex);
            if(currentIndex === -1) {
                // invisible dimensions initially go to the end
                currentIndex += orig.length;
            }
            return currentIndex;
        }

        function sorter(orig) {
            return function sorter(d1, d2) {
                var i1 = newIdx(visibleIndices, orig, d1);
                var i2 = newIdx(visibleIndices, orig, d2);
                return i1 - i2;
            };
        }

        // drag&drop sorting of the visible dimensions
        var orig = sorter(gdDimensionsOriginalOrder[i].filter(visible));
        gdDimensions[i].sort(orig);

        // invisible dimensions are not interpreted in the context of drag&drop sorting as an invisible dimension
        // cannot be dragged; they're interspersed into their original positions by this subsequent merging step
        gdDimensionsOriginalOrder[i].filter(function(d) {return !visible(d);})
             .sort(function(d) {
                 // subsequent splicing to be done left to right, otherwise indices may be incorrect
                 return gdDimensionsOriginalOrder[i].indexOf(d);
             })
            .forEach(function(d) {
                gdDimensions[i].splice(gdDimensions[i].indexOf(d), 1); // remove from the end
                gdDimensions[i].splice(gdDimensionsOriginalOrder[i].indexOf(d), 0, d); // insert at original index
            });

        gd.emit('plotly_restyle');
    };

    parcoords(
        root,
        svg,
        cdparcoords,
        {
            width: size.w,
            height: size.h,
            margin: {
                t: size.t,
                r: size.r,
                b: size.b,
                l: size.l
            }
        },
        {
            filterChanged: filterChanged,
            hover: hover,
            unhover: unhover,
            axesMoved: axesMoved
        });
};

},{"./parcoords":483}],485:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Color = require('../../components/color');

module.exports = function styleOne(s, pt, trace) {
    var lineColor = trace.marker.line.color;
    if(Array.isArray(lineColor)) lineColor = lineColor[pt.i] || Color.defaultLine;

    var lineWidth = trace.marker.line.width || 0;
    if(Array.isArray(lineWidth)) lineWidth = lineWidth[pt.i] || 0;

    s.style({'stroke-width': lineWidth})
    .call(Color.fill, pt.color)
    .call(Color.stroke, lineColor);
};

},{"../../components/color":233}],486:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterglAttrs = require('../scattergl/attributes');

module.exports = {
    x: scatterglAttrs.x,
    y: scatterglAttrs.y,
    xy: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    indices: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    xbounds: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    ybounds: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    text: scatterglAttrs.text,
    marker: {
        color: {
            valType: 'color',
            arrayOk: false,
            
            editType: 'calc',
            
        },
        opacity: {
            valType: 'number',
            min: 0,
            max: 1,
            dflt: 1,
            arrayOk: false,
            
            editType: 'calc',
            
        },
        blend: {
            valType: 'boolean',
            dflt: null,
            
            editType: 'calc',
            
        },
        sizemin: {
            valType: 'number',
            min: 0.1,
            max: 2,
            dflt: 0.5,
            
            editType: 'calc',
            
        },
        sizemax: {
            valType: 'number',
            min: 0.1,
            dflt: 20,
            
            editType: 'calc',
            
        },
        border: {
            color: {
                valType: 'color',
                arrayOk: false,
                
                editType: 'calc',
                
            },
            arearatio: {
                valType: 'number',
                min: 0,
                max: 1,
                dflt: 0,
                
                editType: 'calc',
                
            },
            editType: 'calc'
        },
        editType: 'calc'
    }
};

},{"../scattergl/attributes":516}],487:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var createPointCloudRenderer = require('gl-pointcloud2d');

var str2RGBArray = require('../../lib/str2rgbarray');
var getTraceColor = require('../scatter/get_trace_color');

var AXES = ['xaxis', 'yaxis'];

function Pointcloud(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'pointcloud';

    this.pickXData = [];
    this.pickYData = [];
    this.xData = [];
    this.yData = [];
    this.textLabels = [];
    this.color = 'rgb(0, 0, 0)';
    this.name = '';
    this.hoverinfo = 'all';

    this.idToIndex = new Int32Array(0);
    this.bounds = [0, 0, 0, 0];

    this.pointcloudOptions = {
        positions: new Float32Array(0),
        idToIndex: this.idToIndex,
        sizemin: 0.5,
        sizemax: 12,
        color: [0, 0, 0, 1],
        areaRatio: 1,
        borderColor: [0, 0, 0, 1]
    };
    this.pointcloud = createPointCloudRenderer(scene.glplot, this.pointcloudOptions);
    this.pointcloud._trace = this; // scene2d requires this prop
}

var proto = Pointcloud.prototype;

proto.handlePick = function(pickResult) {
    var index = this.idToIndex[pickResult.pointId];

    // prefer the readout from XY, if present
    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: this.pickXYData ?
            [this.pickXYData[index * 2], this.pickXYData[index * 2 + 1]] :
            [this.pickXData[index], this.pickYData[index]],
        textLabel: Array.isArray(this.textLabels) ?
            this.textLabels[index] :
            this.textLabels,
        color: this.color,
        name: this.name,
        pointIndex: index,
        hoverinfo: this.hoverinfo
    };
};

proto.update = function(options) {
    this.index = options.index;
    this.textLabels = options.text;
    this.name = options.name;
    this.hoverinfo = options.hoverinfo;
    this.bounds = [Infinity, Infinity, -Infinity, -Infinity];

    this.updateFast(options);

    this.color = getTraceColor(options, {});
};

proto.updateFast = function(options) {
    var x = this.xData = this.pickXData = options.x;
    var y = this.yData = this.pickYData = options.y;
    var xy = this.pickXYData = options.xy;

    var userBounds = options.xbounds && options.ybounds;
    var index = options.indices;

    var len,
        idToIndex,
        positions,
        bounds = this.bounds;

    var xx, yy, i;

    if(xy) {

        positions = xy;

        // dividing xy.length by 2 and truncating to integer if xy.length was not even
        len = xy.length >>> 1;

        if(userBounds) {

            bounds[0] = options.xbounds[0];
            bounds[2] = options.xbounds[1];
            bounds[1] = options.ybounds[0];
            bounds[3] = options.ybounds[1];

        } else {

            for(i = 0; i < len; i++) {

                xx = positions[i * 2];
                yy = positions[i * 2 + 1];

                if(xx < bounds[0]) bounds[0] = xx;
                if(xx > bounds[2]) bounds[2] = xx;
                if(yy < bounds[1]) bounds[1] = yy;
                if(yy > bounds[3]) bounds[3] = yy;
            }

        }

        if(index) {

            idToIndex = index;

        } else {

            idToIndex = new Int32Array(len);

            for(i = 0; i < len; i++) {

                idToIndex[i] = i;

            }

        }

    } else {

        len = x.length;

        positions = new Float32Array(2 * len);
        idToIndex = new Int32Array(len);

        for(i = 0; i < len; i++) {
            xx = x[i];
            yy = y[i];

            idToIndex[i] = i;

            positions[i * 2] = xx;
            positions[i * 2 + 1] = yy;

            if(xx < bounds[0]) bounds[0] = xx;
            if(xx > bounds[2]) bounds[2] = xx;
            if(yy < bounds[1]) bounds[1] = yy;
            if(yy > bounds[3]) bounds[3] = yy;
        }

    }

    this.idToIndex = idToIndex;
    this.pointcloudOptions.idToIndex = idToIndex;

    this.pointcloudOptions.positions = positions;

    var markerColor = str2RGBArray(options.marker.color),
        borderColor = str2RGBArray(options.marker.border.color),
        opacity = options.opacity * options.marker.opacity;

    markerColor[3] *= opacity;
    this.pointcloudOptions.color = markerColor;

    // detect blending from the number of points, if undefined
    // because large data with blending hits performance
    var blend = options.marker.blend;
    if(blend === null) {
        var maxPoints = 100;
        blend = x.length < maxPoints || y.length < maxPoints;
    }
    this.pointcloudOptions.blend = blend;

    borderColor[3] *= opacity;
    this.pointcloudOptions.borderColor = borderColor;

    var markerSizeMin = options.marker.sizemin;
    var markerSizeMax = Math.max(options.marker.sizemax, options.marker.sizemin);
    this.pointcloudOptions.sizeMin = markerSizeMin;
    this.pointcloudOptions.sizeMax = markerSizeMax;
    this.pointcloudOptions.areaRatio = options.marker.border.arearatio;

    this.pointcloud.update(this.pointcloudOptions);

    // add item for autorange routine
    this.expandAxesFast(bounds, markerSizeMax / 2); // avoid axis reexpand just because of the adaptive point size
};

proto.expandAxesFast = function(bounds, markerSize) {
    var pad = markerSize || 0.5;
    var ax, min, max;

    for(var i = 0; i < 2; i++) {
        ax = this.scene[AXES[i]];

        min = ax._min;
        if(!min) min = [];
        min.push({ val: bounds[i], pad: pad });

        max = ax._max;
        if(!max) max = [];
        max.push({ val: bounds[i + 2], pad: pad });
    }
};

proto.dispose = function() {
    this.pointcloud.dispose();
};

function createPointcloud(scene, data) {
    var plot = new Pointcloud(scene, data.uid);
    plot.update(data);
    return plot;
}

module.exports = createPointcloud;

},{"../../lib/str2rgbarray":374,"../scatter/get_trace_color":500,"gl-pointcloud2d":111}],488:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var attributes = require('./attributes');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    coerce('x');
    coerce('y');

    coerce('xbounds');
    coerce('ybounds');

    if(traceIn.xy && traceIn.xy instanceof Float32Array) {
        traceOut.xy = traceIn.xy;
    }

    if(traceIn.indices && traceIn.indices instanceof Int32Array) {
        traceOut.indices = traceIn.indices;
    }

    coerce('text');
    coerce('marker.color', defaultColor);
    coerce('marker.opacity');
    coerce('marker.blend');
    coerce('marker.sizemin');
    coerce('marker.sizemax');
    coerce('marker.border.color', defaultColor);
    coerce('marker.border.arearatio');
};

},{"../../lib":353,"./attributes":486}],489:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var pointcloud = {};

pointcloud.attributes = require('./attributes');
pointcloud.supplyDefaults = require('./defaults');

// reuse the Scatter3D 'dummy' calc step so that legends know what to do
pointcloud.calc = require('../scatter3d/calc');
pointcloud.plot = require('./convert');

pointcloud.moduleType = 'trace';
pointcloud.name = 'pointcloud';
pointcloud.basePlotModule = require('../../plots/gl2d');
pointcloud.categories = ['gl2d', 'showLegend'];
pointcloud.meta = {
    
};

module.exports = pointcloud;

},{"../../plots/gl2d":424,"../scatter3d/calc":515,"./attributes":486,"./convert":487,"./defaults":488}],490:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


// arrayOk attributes, merge them into calcdata array
module.exports = function arraysToCalcdata(cd, trace) {

    // so each point knows which index it originally came from
    for(var i = 0; i < cd.length; i++) cd[i].i = i;

    Lib.mergeArray(trace.text, cd, 'tx');
    Lib.mergeArray(trace.hovertext, cd, 'htx');
    Lib.mergeArray(trace.customdata, cd, 'data');
    Lib.mergeArray(trace.textposition, cd, 'tp');
    if(trace.textfont) {
        Lib.mergeArray(trace.textfont.size, cd, 'ts');
        Lib.mergeArray(trace.textfont.color, cd, 'tc');
        Lib.mergeArray(trace.textfont.family, cd, 'tf');
    }

    var marker = trace.marker;
    if(marker) {
        Lib.mergeArray(marker.size, cd, 'ms');
        Lib.mergeArray(marker.opacity, cd, 'mo');
        Lib.mergeArray(marker.symbol, cd, 'mx');
        Lib.mergeArray(marker.color, cd, 'mc');

        var markerLine = marker.line;
        if(marker.line) {
            Lib.mergeArray(markerLine.color, cd, 'mlc');
            Lib.mergeArray(markerLine.width, cd, 'mlw');
        }

        var markerGradient = marker.gradient;
        if(markerGradient && markerGradient.type !== 'none') {
            Lib.mergeArray(markerGradient.type, cd, 'mgt');
            Lib.mergeArray(markerGradient.color, cd, 'mgc');
        }
    }
};

},{"../../lib":353}],491:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttributes = require('../../components/colorscale/color_attributes');
var errorBarAttrs = require('../../components/errorbars/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var fontAttrs = require('../../plots/font_attributes');
var dash = require('../../components/drawing/attributes').dash;

var Drawing = require('../../components/drawing');
var constants = require('./constants');
var extendFlat = require('../../lib/extend').extendFlat;

module.exports = {
    x: {
        valType: 'data_array',
        editType: 'calc+clearAxisTypes',
        
    },
    x0: {
        valType: 'any',
        dflt: 0,
        
        editType: 'calc+clearAxisTypes',
        
    },
    dx: {
        valType: 'number',
        dflt: 1,
        
        editType: 'calc',
        
    },
    y: {
        valType: 'data_array',
        editType: 'calc+clearAxisTypes',
        
    },
    y0: {
        valType: 'any',
        dflt: 0,
        
        editType: 'calc+clearAxisTypes',
        
    },
    dy: {
        valType: 'number',
        dflt: 1,
        
        editType: 'calc',
        
    },
    text: {
        valType: 'string',
        
        dflt: '',
        arrayOk: true,
        editType: 'calc',
        
    },
    hovertext: {
        valType: 'string',
        
        dflt: '',
        arrayOk: true,
        editType: 'style',
        
    },
    mode: {
        valType: 'flaglist',
        flags: ['lines', 'markers', 'text'],
        extras: ['none'],
        
        editType: 'calc',
        
    },
    hoveron: {
        valType: 'flaglist',
        flags: ['points', 'fills'],
        
        editType: 'style',
        
    },
    line: {
        color: {
            valType: 'color',
            
            editType: 'style',
            
        },
        width: {
            valType: 'number',
            min: 0,
            dflt: 2,
            
            editType: 'style',
            
        },
        shape: {
            valType: 'enumerated',
            values: ['linear', 'spline', 'hv', 'vh', 'hvh', 'vhv'],
            dflt: 'linear',
            
            editType: 'plot',
            
        },
        smoothing: {
            valType: 'number',
            min: 0,
            max: 1.3,
            dflt: 1,
            
            editType: 'plot',
            
        },
        dash: extendFlat({}, dash, {editType: 'style'}),
        simplify: {
            valType: 'boolean',
            dflt: true,
            
            editType: 'plot',
            
        },
        editType: 'plot'
    },

    connectgaps: {
        valType: 'boolean',
        dflt: false,
        
        editType: 'calc',
        
    },
    cliponaxis: {
        valType: 'boolean',
        dflt: true,
        
        editType: 'plot',
        
    },

    fill: {
        valType: 'enumerated',
        values: ['none', 'tozeroy', 'tozerox', 'tonexty', 'tonextx', 'toself', 'tonext'],
        dflt: 'none',
        
        editType: 'calc',
        
    },
    fillcolor: {
        valType: 'color',
        
        editType: 'style',
        
    },
    marker: extendFlat({
        symbol: {
            valType: 'enumerated',
            values: Drawing.symbolList,
            dflt: 'circle',
            arrayOk: true,
            
            editType: 'style',
            
        },
        opacity: {
            valType: 'number',
            min: 0,
            max: 1,
            arrayOk: true,
            
            editType: 'style',
            
        },
        size: {
            valType: 'number',
            min: 0,
            dflt: 6,
            arrayOk: true,
            
            editType: 'calcIfAutorange',
            
        },
        maxdisplayed: {
            valType: 'number',
            min: 0,
            dflt: 0,
            
            editType: 'plot',
            
        },
        sizeref: {
            valType: 'number',
            dflt: 1,
            
            editType: 'calc',
            
        },
        sizemin: {
            valType: 'number',
            min: 0,
            dflt: 0,
            
            editType: 'calc',
            
        },
        sizemode: {
            valType: 'enumerated',
            values: ['diameter', 'area'],
            dflt: 'diameter',
            
            editType: 'calc',
            
        },

        showscale: {
            valType: 'boolean',
            
            dflt: false,
            editType: 'calc',
            
        },
        colorbar: colorbarAttrs,

        line: extendFlat({
            width: {
                valType: 'number',
                min: 0,
                arrayOk: true,
                
                editType: 'style',
                
            },
            editType: 'calc'
        },
            colorAttributes('marker.line')
        ),
        gradient: {
            type: {
                valType: 'enumerated',
                values: ['radial', 'horizontal', 'vertical', 'none'],
                arrayOk: true,
                dflt: 'none',
                
                editType: 'calc',
                
            },
            color: {
                valType: 'color',
                arrayOk: true,
                
                editType: 'calc',
                
            },
            editType: 'calc'
        },
        editType: 'calc'
    },
        colorAttributes('marker')
    ),
    textposition: {
        valType: 'enumerated',
        values: [
            'top left', 'top center', 'top right',
            'middle left', 'middle center', 'middle right',
            'bottom left', 'bottom center', 'bottom right'
        ],
        dflt: 'middle center',
        arrayOk: true,
        
        editType: 'calc',
        
    },
    textfont: fontAttrs({
        editType: 'calc',
        colorEditType: 'style',
        arrayOk: true,
        
    }),

    r: {
        valType: 'data_array',
        editType: 'calc',
        
    },
    t: {
        valType: 'data_array',
        editType: 'calc',
        
    },

    error_y: errorBarAttrs,
    error_x: errorBarAttrs
};

},{"../../components/colorbar/attributes":234,"../../components/colorscale/color_attributes":240,"../../components/drawing":257,"../../components/drawing/attributes":256,"../../components/errorbars/attributes":259,"../../lib/extend":344,"../../plots/font_attributes":420,"./constants":496}],492:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Axes = require('../../plots/cartesian/axes');
var BADNUM = require('../../constants/numerical').BADNUM;

var subTypes = require('./subtypes');
var calcColorscale = require('./colorscale_calc');
var arraysToCalcdata = require('./arrays_to_calcdata');


module.exports = function calc(gd, trace) {
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        ya = Axes.getFromId(gd, trace.yaxis || 'y');

    var x = xa.makeCalcdata(trace, 'x'),
        y = ya.makeCalcdata(trace, 'y');

    var serieslen = Math.min(x.length, y.length),
        marker,
        s,
        i;

    // cancel minimum tick spacings (only applies to bars and boxes)
    xa._minDtick = 0;
    ya._minDtick = 0;

    if(x.length > serieslen) x.splice(serieslen, x.length - serieslen);
    if(y.length > serieslen) y.splice(serieslen, y.length - serieslen);

    // check whether bounds should be tight, padded, extended to zero...
    // most cases both should be padded on both ends, so start with that.
    var xOptions = {padded: true},
        yOptions = {padded: true};

    if(subTypes.hasMarkers(trace)) {

        // Treat size like x or y arrays --- Run d2c
        // this needs to go before ppad computation
        marker = trace.marker;
        s = marker.size;

        if(Array.isArray(s)) {
            // I tried auto-type but category and dates dont make much sense.
            var ax = {type: 'linear'};
            Axes.setConvert(ax);
            s = ax.makeCalcdata(trace.marker, 'size');
            if(s.length > serieslen) s.splice(serieslen, s.length - serieslen);
        }

        var sizeref = 1.6 * (trace.marker.sizeref || 1),
            markerTrans;
        if(trace.marker.sizemode === 'area') {
            markerTrans = function(v) {
                return Math.max(Math.sqrt((v || 0) / sizeref), 3);
            };
        }
        else {
            markerTrans = function(v) {
                return Math.max((v || 0) / sizeref, 3);
            };
        }
        xOptions.ppad = yOptions.ppad = Array.isArray(s) ?
            s.map(markerTrans) : markerTrans(s);
    }

    calcColorscale(trace);

    // TODO: text size

    // include zero (tight) and extremes (padded) if fill to zero
    // (unless the shape is closed, then it's just filling the shape regardless)
    if(((trace.fill === 'tozerox') ||
            ((trace.fill === 'tonextx') && gd.firstscatter)) &&
            ((x[0] !== x[serieslen - 1]) || (y[0] !== y[serieslen - 1]))) {
        xOptions.tozero = true;
    }

    // if no error bars, markers or text, or fill to y=0 remove x padding
    else if(!trace.error_y.visible && (
            ['tonexty', 'tozeroy'].indexOf(trace.fill) !== -1 ||
            (!subTypes.hasMarkers(trace) && !subTypes.hasText(trace))
        )) {
        xOptions.padded = false;
        xOptions.ppad = 0;
    }

    // now check for y - rather different logic, though still mostly padded both ends
    // include zero (tight) and extremes (padded) if fill to zero
    // (unless the shape is closed, then it's just filling the shape regardless)
    if(((trace.fill === 'tozeroy') || ((trace.fill === 'tonexty') && gd.firstscatter)) &&
            ((x[0] !== x[serieslen - 1]) || (y[0] !== y[serieslen - 1]))) {
        yOptions.tozero = true;
    }

    // tight y: any x fill
    else if(['tonextx', 'tozerox'].indexOf(trace.fill) !== -1) {
        yOptions.padded = false;
    }

    Axes.expand(xa, x, xOptions);
    Axes.expand(ya, y, yOptions);

    // create the "calculated data" to plot
    var cd = new Array(serieslen);
    for(i = 0; i < serieslen; i++) {
        cd[i] = (isNumeric(x[i]) && isNumeric(y[i])) ?
            {x: x[i], y: y[i]} : {x: BADNUM, y: BADNUM};

        if(trace.ids) {
            cd[i].id = String(trace.ids[i]);
        }
    }

    arraysToCalcdata(cd, trace);

    gd.firstscatter = false;
    return cd;
};

},{"../../constants/numerical":334,"../../plots/cartesian/axes":396,"./arrays_to_calcdata":490,"./colorscale_calc":495,"./subtypes":512,"fast-isnumeric":68}],493:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


// remove opacity for any trace that has a fill or is filled to
module.exports = function cleanData(fullData) {
    for(var i = 0; i < fullData.length; i++) {
        var tracei = fullData[i];
        if(tracei.type !== 'scatter') continue;

        var filli = tracei.fill;
        if(filli === 'none' || filli === 'toself') continue;

        tracei.opacity = undefined;

        if(filli === 'tonexty' || filli === 'tonextx') {
            for(var j = i - 1; j >= 0; j--) {
                var tracej = fullData[j];

                if((tracej.type === 'scatter') &&
                        (tracej.xaxis === tracei.xaxis) &&
                        (tracej.yaxis === tracei.yaxis)) {
                    tracej.opacity = undefined;
                    break;
                }
            }
        }
    }
};

},{}],494:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Colorscale = require('../../components/colorscale');
var drawColorbar = require('../../components/colorbar/draw');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        marker = trace.marker,
        cbId = 'cb' + trace.uid;

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    // TODO make Colorbar.draw support multiple colorbar per trace

    if((marker === undefined) || !marker.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var vals = marker.color,
        cmin = marker.cmin,
        cmax = marker.cmax;

    if(!isNumeric(cmin)) cmin = Lib.aggNums(Math.min, null, vals);
    if(!isNumeric(cmax)) cmax = Lib.aggNums(Math.max, null, vals);

    var cb = cd[0].t.cb = drawColorbar(gd, cbId);
    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            marker.colorscale,
            cmin,
            cmax
        ),
        { noNumericCheck: true }
    );

    cb.fillcolor(sclFunc)
        .filllevels({start: cmin, end: cmax, size: (cmax - cmin) / 254})
        .options(marker.colorbar)();
};

},{"../../components/colorbar/draw":236,"../../components/colorscale":247,"../../lib":353,"../../plots/plots":429,"fast-isnumeric":68}],495:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var hasColorscale = require('../../components/colorscale/has_colorscale');
var calcColorscale = require('../../components/colorscale/calc');

var subTypes = require('./subtypes');


module.exports = function calcMarkerColorscale(trace) {
    if(subTypes.hasLines(trace) && hasColorscale(trace, 'line')) {
        calcColorscale(trace, trace.line.color, 'line', 'c');
    }

    if(subTypes.hasMarkers(trace)) {
        if(hasColorscale(trace, 'marker')) {
            calcColorscale(trace, trace.marker.color, 'marker', 'c');
        }
        if(hasColorscale(trace, 'marker.line')) {
            calcColorscale(trace, trace.marker.line.color, 'marker.line', 'c');
        }
    }
};

},{"../../components/colorscale/calc":239,"../../components/colorscale/has_colorscale":246,"./subtypes":512}],496:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = {
    PTS_LINESONLY: 20,

    // fixed parameters of clustering and clipping algorithms

    // fraction of clustering tolerance "so close we don't even consider it a new point"
    minTolerance: 0.2,
    // how fast does clustering tolerance increase as you get away from the visible region
    toleranceGrowth: 10,

    // number of viewport sizes away from the visible region
    // at which we clip all lines to the perimeter
    maxScreensAway: 20
};

},{}],497:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var attributes = require('./attributes');
var constants = require('./constants');
var subTypes = require('./subtypes');
var handleXYDefaults = require('./xy_defaults');
var handleMarkerDefaults = require('./marker_defaults');
var handleLineDefaults = require('./line_defaults');
var handleLineShapeDefaults = require('./line_shape_defaults');
var handleTextDefaults = require('./text_defaults');
var handleFillColorDefaults = require('./fillcolor_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYDefaults(traceIn, traceOut, layout, coerce),
        // TODO: default mode by orphan points...
        defaultMode = len < constants.PTS_LINESONLY ? 'lines+markers' : 'lines';
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('hovertext');
    coerce('mode', defaultMode);

    if(subTypes.hasLines(traceOut)) {
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
        handleLineShapeDefaults(traceIn, traceOut, coerce);
        coerce('connectgaps');
        coerce('line.simplify');
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce, {gradient: true});
    }

    if(subTypes.hasText(traceOut)) {
        handleTextDefaults(traceIn, traceOut, layout, coerce);
    }

    var dfltHoverOn = [];

    if(subTypes.hasMarkers(traceOut) || subTypes.hasText(traceOut)) {
        coerce('marker.maxdisplayed');
        dfltHoverOn.push('points');
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
        if(!subTypes.hasLines(traceOut)) handleLineShapeDefaults(traceIn, traceOut, coerce);
    }

    if(traceOut.fill === 'tonext' || traceOut.fill === 'toself') {
        dfltHoverOn.push('fills');
    }
    coerce('hoveron', dfltHoverOn.join('+') || 'points');

    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'y'});
    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});

    coerce('cliponaxis');
};

},{"../../components/errorbars/defaults":262,"../../lib":353,"./attributes":491,"./constants":496,"./fillcolor_defaults":499,"./line_defaults":503,"./line_shape_defaults":505,"./marker_defaults":508,"./subtypes":512,"./text_defaults":513,"./xy_defaults":514}],498:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');

/** Fill hover 'pointData' container with 'correct' hover text value
 *
 * - If trace hoverinfo contains a 'text' flag and hovertext is not set,
 *   the text elements will be seen in the hover labels.
 *
 * - If trace hoverinfo contains a 'text' flag and hovertext is set,
 *   hovertext takes precedence over text
 *   i.e. the hoverinfo elements will be seen in the hover labels
 *
 *  @param {object} calcPt
 *  @param {object} trace
 *  @param {object || array} contOut (mutated here)
 */
module.exports = function fillHoverText(calcPt, trace, contOut) {
    var fill = Array.isArray(contOut) ?
        function(v) { contOut.push(v); } :
        function(v) { contOut.text = v; };

    var htx = Lib.extractOption(calcPt, trace, 'htx', 'hovertext');
    if(isValid(htx)) return fill(htx);

    var tx = Lib.extractOption(calcPt, trace, 'tx', 'text');
    if(isValid(tx)) return fill(tx);
};

// accept all truthy values and 0 (which gets cast to '0' in the hover labels)
function isValid(v) {
    return v || v === 0;
}

},{"../../lib":353}],499:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');


module.exports = function fillColorDefaults(traceIn, traceOut, defaultColor, coerce) {
    var inheritColorFromMarker = false;

    if(traceOut.marker) {
        // don't try to inherit a color array
        var markerColor = traceOut.marker.color,
            markerLineColor = (traceOut.marker.line || {}).color;

        if(markerColor && !Array.isArray(markerColor)) {
            inheritColorFromMarker = markerColor;
        }
        else if(markerLineColor && !Array.isArray(markerLineColor)) {
            inheritColorFromMarker = markerLineColor;
        }
    }

    coerce('fillcolor', Color.addOpacity(
        (traceOut.line || {}).color ||
        inheritColorFromMarker ||
        defaultColor, 0.5
    ));
};

},{"../../components/color":233}],500:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');
var subtypes = require('./subtypes');


module.exports = function getTraceColor(trace, di) {
    var lc, tc;

    // TODO: text modes

    if(trace.mode === 'lines') {
        lc = trace.line.color;
        return (lc && Color.opacity(lc)) ?
            lc : trace.fillcolor;
    }
    else if(trace.mode === 'none') {
        return trace.fill ? trace.fillcolor : '';
    }
    else {
        var mc = di.mcc || (trace.marker || {}).color,
            mlc = di.mlcc || ((trace.marker || {}).line || {}).color;

        tc = (mc && Color.opacity(mc)) ? mc :
            (mlc && Color.opacity(mlc) &&
                (di.mlw || ((trace.marker || {}).line || {}).width)) ? mlc : '';

        if(tc) {
            // make sure the points aren't TOO transparent
            if(Color.opacity(tc) < 0.3) {
                return Color.addOpacity(tc, 0.3);
            }
            else return tc;
        }
        else {
            lc = (trace.line || {}).color;
            return (lc && Color.opacity(lc) &&
                subtypes.hasLines(trace) && trace.line.width) ?
                    lc : trace.fillcolor;
        }
    }
};

},{"../../components/color":233,"./subtypes":512}],501:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Fx = require('../../components/fx');
var ErrorBars = require('../../components/errorbars');
var getTraceColor = require('./get_trace_color');
var Color = require('../../components/color');
var fillHoverText = require('./fill_hover_text');

var MAXDIST = Fx.constants.MAXDIST;

module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
    var cd = pointData.cd,
        trace = cd[0].trace,
        xa = pointData.xa,
        ya = pointData.ya,
        xpx = xa.c2p(xval),
        ypx = ya.c2p(yval),
        pt = [xpx, ypx],
        hoveron = trace.hoveron || '';

    // look for points to hover on first, then take fills only if we
    // didn't find a point
    if(hoveron.indexOf('points') !== -1) {
        var dx = function(di) {
                // scatter points: d.mrc is the calculated marker radius
                // adjust the distance so if you're inside the marker it
                // always will show up regardless of point size, but
                // prioritize smaller points
                var rad = Math.max(3, di.mrc || 0);
                return Math.max(Math.abs(xa.c2p(di.x) - xpx) - rad, 1 - 3 / rad);
            },
            dy = function(di) {
                var rad = Math.max(3, di.mrc || 0);
                return Math.max(Math.abs(ya.c2p(di.y) - ypx) - rad, 1 - 3 / rad);
            },
            dxy = function(di) {
                var rad = Math.max(3, di.mrc || 0),
                    dx = xa.c2p(di.x) - xpx,
                    dy = ya.c2p(di.y) - ypx;
                return Math.max(Math.sqrt(dx * dx + dy * dy) - rad, 1 - 3 / rad);
            },
            distfn = Fx.getDistanceFunction(hovermode, dx, dy, dxy);

        Fx.getClosest(cd, distfn, pointData);

        // skip the rest (for this trace) if we didn't find a close point
        if(pointData.index !== false) {

            // the closest data point
            var di = cd[pointData.index],
                xc = xa.c2p(di.x, true),
                yc = ya.c2p(di.y, true),
                rad = di.mrc || 1;

            Lib.extendFlat(pointData, {
                color: getTraceColor(trace, di),

                x0: xc - rad,
                x1: xc + rad,
                xLabelVal: di.x,

                y0: yc - rad,
                y1: yc + rad,
                yLabelVal: di.y
            });

            fillHoverText(di, trace, pointData);
            ErrorBars.hoverInfo(di, trace, pointData);

            return [pointData];
        }
    }

    // even if hoveron is 'fills', only use it if we have polygons too
    if(hoveron.indexOf('fills') !== -1 && trace._polygons) {
        var polygons = trace._polygons,
            polygonsIn = [],
            inside = false,
            xmin = Infinity,
            xmax = -Infinity,
            ymin = Infinity,
            ymax = -Infinity,
            i, j, polygon, pts, xCross, x0, x1, y0, y1;

        for(i = 0; i < polygons.length; i++) {
            polygon = polygons[i];
            // TODO: this is not going to work right for curved edges, it will
            // act as though they're straight. That's probably going to need
            // the elements themselves to capture the events. Worth it?
            if(polygon.contains(pt)) {
                inside = !inside;
                // TODO: need better than just the overall bounding box
                polygonsIn.push(polygon);
                ymin = Math.min(ymin, polygon.ymin);
                ymax = Math.max(ymax, polygon.ymax);
            }
        }

        if(inside) {
            // constrain ymin/max to the visible plot, so the label goes
            // at the middle of the piece you can see
            ymin = Math.max(ymin, 0);
            ymax = Math.min(ymax, ya._length);

            // find the overall left-most and right-most points of the
            // polygon(s) we're inside at their combined vertical midpoint.
            // This is where we will draw the hover label.
            // Note that this might not be the vertical midpoint of the
            // whole trace, if it's disjoint.
            var yAvg = (ymin + ymax) / 2;
            for(i = 0; i < polygonsIn.length; i++) {
                pts = polygonsIn[i].pts;
                for(j = 1; j < pts.length; j++) {
                    y0 = pts[j - 1][1];
                    y1 = pts[j][1];
                    if((y0 > yAvg) !== (y1 >= yAvg)) {
                        x0 = pts[j - 1][0];
                        x1 = pts[j][0];
                        xCross = x0 + (x1 - x0) * (yAvg - y0) / (y1 - y0);
                        xmin = Math.min(xmin, xCross);
                        xmax = Math.max(xmax, xCross);
                    }
                }
            }

            // constrain xmin/max to the visible plot now too
            xmin = Math.max(xmin, 0);
            xmax = Math.min(xmax, xa._length);

            // get only fill or line color for the hover color
            var color = Color.defaultLine;
            if(Color.opacity(trace.fillcolor)) color = trace.fillcolor;
            else if(Color.opacity((trace.line || {}).color)) {
                color = trace.line.color;
            }

            Lib.extendFlat(pointData, {
                // never let a 2D override 1D type as closest point
                distance: MAXDIST + 10,
                x0: xmin,
                x1: xmax,
                y0: yAvg,
                y1: yAvg,
                color: color
            });

            delete pointData.index;

            if(trace.text && !Array.isArray(trace.text)) {
                pointData.text = String(trace.text);
            }
            else pointData.text = trace.name;

            return [pointData];
        }
    }
};

},{"../../components/color":233,"../../components/errorbars":263,"../../components/fx":274,"../../lib":353,"./fill_hover_text":498,"./get_trace_color":500}],502:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Scatter = {};

var subtypes = require('./subtypes');
Scatter.hasLines = subtypes.hasLines;
Scatter.hasMarkers = subtypes.hasMarkers;
Scatter.hasText = subtypes.hasText;
Scatter.isBubble = subtypes.isBubble;

// traces with < this many points are by default shown
// with points and lines, > just get lines
Scatter.attributes = require('./attributes');
Scatter.supplyDefaults = require('./defaults');
Scatter.cleanData = require('./clean_data');
Scatter.calc = require('./calc');
Scatter.arraysToCalcdata = require('./arrays_to_calcdata');
Scatter.plot = require('./plot');
Scatter.colorbar = require('./colorbar');
Scatter.style = require('./style');
Scatter.hoverPoints = require('./hover');
Scatter.selectPoints = require('./select');
Scatter.animatable = true;

Scatter.moduleType = 'trace';
Scatter.name = 'scatter';
Scatter.basePlotModule = require('../../plots/cartesian');
Scatter.categories = ['cartesian', 'symbols', 'markerColorscale', 'errorBarsOK', 'showLegend', 'scatter-like'];
Scatter.meta = {
    
};

module.exports = Scatter;

},{"../../plots/cartesian":406,"./arrays_to_calcdata":490,"./attributes":491,"./calc":492,"./clean_data":493,"./colorbar":494,"./defaults":497,"./hover":501,"./plot":509,"./select":510,"./style":511,"./subtypes":512}],503:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleDefaults = require('../../components/colorscale/defaults');


module.exports = function lineDefaults(traceIn, traceOut, defaultColor, layout, coerce, opts) {
    var markerColor = (traceIn.marker || {}).color;

    coerce('line.color', defaultColor);

    if(hasColorscale(traceIn, 'line')) {
        colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'line.', cLetter: 'c'});
    }
    else {
        var lineColorDflt = (Array.isArray(markerColor) ? false : markerColor) || defaultColor;
        coerce('line.color', lineColorDflt);
    }

    coerce('line.width');
    if(!(opts || {}).noDash) coerce('line.dash');
};

},{"../../components/colorscale/defaults":242,"../../components/colorscale/has_colorscale":246}],504:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var BADNUM = require('../../constants/numerical').BADNUM;
var Lib = require('../../lib');
var segmentsIntersect = Lib.segmentsIntersect;
var constrain = Lib.constrain;
var constants = require('./constants');


module.exports = function linePoints(d, opts) {
    var xa = opts.xaxis;
    var ya = opts.yaxis;
    var simplify = opts.simplify;
    var connectGaps = opts.connectGaps;
    var baseTolerance = opts.baseTolerance;
    var shape = opts.shape;
    var linear = shape === 'linear';
    var segments = [];
    var minTolerance = constants.minTolerance;
    var pts = new Array(d.length);
    var pti = 0;

    var i;

    // pt variables are pixel coordinates [x,y] of one point
    // these four are the outputs of clustering on a line
    var clusterStartPt, clusterEndPt, clusterHighPt, clusterLowPt;

    // "this" is the next point we're considering adding to the cluster
    var thisPt;

    // did we encounter the high point first, then a low point, or vice versa?
    var clusterHighFirst;

    // the first two points in the cluster determine its unit vector
    // so the second is always in the "High" direction
    var clusterUnitVector;

    // the pixel delta from clusterStartPt
    var thisVector;

    // val variables are (signed) pixel distances along the cluster vector
    var clusterRefDist, clusterHighVal, clusterLowVal, thisVal;

    // deviation variables are (signed) pixel distances normal to the cluster vector
    var clusterMinDeviation, clusterMaxDeviation, thisDeviation;

    if(!simplify) {
        baseTolerance = minTolerance = -1;
    }

    // turn one calcdata point into pixel coordinates
    function getPt(index) {
        var x = xa.c2p(d[index].x);
        var y = ya.c2p(d[index].y);
        if(x === BADNUM || y === BADNUM) return false;
        return [x, y];
    }

    // if we're off-screen, increase tolerance over baseTolerance
    function getTolerance(pt) {
        var xFrac = pt[0] / xa._length;
        var yFrac = pt[1] / ya._length;
        return (1 + constants.toleranceGrowth * Math.max(0, -xFrac, xFrac - 1, -yFrac, yFrac - 1)) * baseTolerance;
    }

    function ptDist(pt1, pt2) {
        var dx = pt1[0] - pt2[0];
        var dy = pt1[1] - pt2[1];
        return Math.sqrt(dx * dx + dy * dy);
    }

    // last bit of filtering: clip paths that are VERY far off-screen
    // so we don't get near the browser's hard limit (+/- 2^29 px in Chrome and FF)

    var maxScreensAway = constants.maxScreensAway;

    // find the intersections between the segment from pt1 to pt2
    // and the large rectangle maxScreensAway around the viewport
    // if one of pt1 and pt2 is inside and the other outside, there
    // will be only one intersection.
    // if both are outside there will be 0 or 2 intersections
    // (or 1 if it's right at a corner - we'll treat that like 0)
    // returns an array of intersection pts
    var xEdge0 = -xa._length * maxScreensAway;
    var xEdge1 = xa._length * (1 + maxScreensAway);
    var yEdge0 = -ya._length * maxScreensAway;
    var yEdge1 = ya._length * (1 + maxScreensAway);
    var edges = [
        [xEdge0, yEdge0, xEdge1, yEdge0],
        [xEdge1, yEdge0, xEdge1, yEdge1],
        [xEdge1, yEdge1, xEdge0, yEdge1],
        [xEdge0, yEdge1, xEdge0, yEdge0]
    ];
    var xEdge, yEdge, lastXEdge, lastYEdge, lastFarPt, edgePt;

    // for linear line shape, edge intersections should be linearly interpolated
    // spline uses this too, which isn't precisely correct but is actually pretty
    // good, because Catmull-Rom weights far-away points less in creating the curvature
    function getLinearEdgeIntersections(pt1, pt2) {
        var out = [];
        var ptCount = 0;
        for(var i = 0; i < 4; i++) {
            var edge = edges[i];
            var ptInt = segmentsIntersect(pt1[0], pt1[1], pt2[0], pt2[1],
                edge[0], edge[1], edge[2], edge[3]);
            if(ptInt && (!ptCount ||
                Math.abs(ptInt.x - out[0][0]) > 1 ||
                Math.abs(ptInt.y - out[0][1]) > 1
            )) {
                ptInt = [ptInt.x, ptInt.y];
                // if we have 2 intersections, make sure the closest one to pt1 comes first
                if(ptCount && ptDist(ptInt, pt1) < ptDist(out[0], pt1)) out.unshift(ptInt);
                else out.push(ptInt);
                ptCount++;
            }
        }
        return out;
    }

    function onlyConstrainedPoint(pt) {
        if(pt[0] < xEdge0 || pt[0] > xEdge1 || pt[1] < yEdge0 || pt[1] > yEdge1) {
            return [constrain(pt[0], xEdge0, xEdge1), constrain(pt[1], yEdge0, yEdge1)];
        }
    }

    function sameEdge(pt1, pt2) {
        if(pt1[0] === pt2[0] && (pt1[0] === xEdge0 || pt1[0] === xEdge1)) return true;
        if(pt1[1] === pt2[1] && (pt1[1] === yEdge0 || pt1[1] === yEdge1)) return true;
    }

    // for line shapes hv and vh, movement in the two dimensions is decoupled,
    // so all we need to do is constrain each dimension independently
    function getHVEdgeIntersections(pt1, pt2) {
        var out = [];
        var ptInt1 = onlyConstrainedPoint(pt1);
        var ptInt2 = onlyConstrainedPoint(pt2);
        if(ptInt1 && ptInt2 && sameEdge(ptInt1, ptInt2)) return out;

        if(ptInt1) out.push(ptInt1);
        if(ptInt2) out.push(ptInt2);
        return out;
    }

    // hvh and vhv we sometimes have to move one of the intersection points
    // out BEYOND the clipping rect, by a maximum of a factor of 2, so that
    // the midpoint line is drawn in the right place
    function getABAEdgeIntersections(dim, limit0, limit1) {
        return function(pt1, pt2) {
            var ptInt1 = onlyConstrainedPoint(pt1);
            var ptInt2 = onlyConstrainedPoint(pt2);

            var out = [];
            if(ptInt1 && ptInt2 && sameEdge(ptInt1, ptInt2)) return out;

            if(ptInt1) out.push(ptInt1);
            if(ptInt2) out.push(ptInt2);

            var midShift = 2 * Lib.constrain((pt1[dim] + pt2[dim]) / 2, limit0, limit1) -
                ((ptInt1 || pt1)[dim] + (ptInt2 || pt2)[dim]);
            if(midShift) {
                var ptToAlter;
                if(ptInt1 && ptInt2) {
                    ptToAlter = (midShift > 0 === ptInt1[dim] > ptInt2[dim]) ? ptInt1 : ptInt2;
                }
                else ptToAlter = ptInt1 || ptInt2;

                ptToAlter[dim] += midShift;
            }

            return out;
        };
    }

    var getEdgeIntersections;
    if(shape === 'linear' || shape === 'spline') {
        getEdgeIntersections = getLinearEdgeIntersections;
    }
    else if(shape === 'hv' || shape === 'vh') {
        getEdgeIntersections = getHVEdgeIntersections;
    }
    else if(shape === 'hvh') getEdgeIntersections = getABAEdgeIntersections(0, xEdge0, xEdge1);
    else if(shape === 'vhv') getEdgeIntersections = getABAEdgeIntersections(1, yEdge0, yEdge1);

    // a segment pt1->pt2 entirely outside the nearby region:
    // find the corner it gets closest to touching
    function getClosestCorner(pt1, pt2) {
        var dx = pt2[0] - pt1[0];
        var m = (pt2[1] - pt1[1]) / dx;
        var b = (pt1[1] * pt2[0] - pt2[1] * pt1[0]) / dx;

        if(b > 0) return [m > 0 ? xEdge0 : xEdge1, yEdge1];
        else return [m > 0 ? xEdge1 : xEdge0, yEdge0];
    }

    function updateEdge(pt) {
        var x = pt[0];
        var y = pt[1];
        var xSame = x === pts[pti - 1][0];
        var ySame = y === pts[pti - 1][1];
        // duplicate point?
        if(xSame && ySame) return;
        if(pti > 1) {
            // backtracking along an edge?
            var xSame2 = x === pts[pti - 2][0];
            var ySame2 = y === pts[pti - 2][1];
            if(xSame && (x === xEdge0 || x === xEdge1) && xSame2) {
                if(ySame2) pti--; // backtracking exactly - drop prev pt and don't add
                else pts[pti - 1] = pt; // not exact: replace the prev pt
            }
            else if(ySame && (y === yEdge0 || y === yEdge1) && ySame2) {
                if(xSame2) pti--;
                else pts[pti - 1] = pt;
            }
            else pts[pti++] = pt;
        }
        else pts[pti++] = pt;
    }

    function updateEdgesForReentry(pt) {
        // if we're outside the nearby region and going back in,
        // we may need to loop around a corner point
        if(pts[pti - 1][0] !== pt[0] && pts[pti - 1][1] !== pt[1]) {
            updateEdge([lastXEdge, lastYEdge]);
        }
        updateEdge(pt);
        lastFarPt = null;
        lastXEdge = lastYEdge = 0;
    }

    function addPt(pt) {
        // Are we more than maxScreensAway off-screen any direction?
        // if so, clip to this box, but in such a way that on-screen
        // drawing is unchanged
        xEdge = (pt[0] < xEdge0) ? xEdge0 : (pt[0] > xEdge1) ? xEdge1 : 0;
        yEdge = (pt[1] < yEdge0) ? yEdge0 : (pt[1] > yEdge1) ? yEdge1 : 0;
        if(xEdge || yEdge) {
            // to get fills right - if first point is far, push it toward the
            // screen in whichever direction(s) are far
            if(!pti) {
                pts[pti++] = [xEdge || pt[0], yEdge || pt[1]];
            }
            else if(lastFarPt) {
                // both this point and the last are outside the nearby region
                // check if we're crossing the nearby region
                var intersections = getEdgeIntersections(lastFarPt, pt);
                if(intersections.length > 1) {
                    updateEdgesForReentry(intersections[0]);
                    pts[pti++] = intersections[1];
                }
            }
            // we're leaving the nearby region - add the point where we left it
            else {
                edgePt = getEdgeIntersections(pts[pti - 1], pt)[0];
                pts[pti++] = edgePt;
            }

            var lastPt = pts[pti - 1];
            if(xEdge && yEdge && (lastPt[0] !== xEdge || lastPt[1] !== yEdge)) {
                // we've gone out beyond a new corner: add the corner too
                // so that the next point will take the right winding
                if(lastFarPt) {
                    if(lastXEdge !== xEdge && lastYEdge !== yEdge) {
                        if(lastXEdge && lastYEdge) {
                            // we've gone around to an opposite corner - we
                            // need to add the correct extra corner
                            // in order to get the right winding
                            updateEdge(getClosestCorner(lastFarPt, pt));
                        }
                        else {
                            // we're coming from a far edge - the extra corner
                            // we need is determined uniquely by the sectors
                            updateEdge([lastXEdge || xEdge, lastYEdge || yEdge]);
                        }
                    }
                    else if(lastXEdge && lastYEdge) {
                        updateEdge([lastXEdge, lastYEdge]);
                    }
                }
                updateEdge([xEdge, yEdge]);
            }
            else if((lastXEdge - xEdge) && (lastYEdge - yEdge)) {
                // we're coming from an edge or far corner to an edge - again the
                // extra corner we need is uniquely determined by the sectors
                updateEdge([xEdge || lastXEdge, yEdge || lastYEdge]);
            }
            lastFarPt = pt;
            lastXEdge = xEdge;
            lastYEdge = yEdge;
        }
        else {
            if(lastFarPt) {
                // this point is in range but the previous wasn't: add its entry pt first
                updateEdgesForReentry(getEdgeIntersections(lastFarPt, pt)[0]);
            }

            pts[pti++] = pt;
        }
    }

    // loop over ALL points in this trace
    for(i = 0; i < d.length; i++) {
        clusterStartPt = getPt(i);
        if(!clusterStartPt) continue;

        pti = 0;
        lastFarPt = null;
        addPt(clusterStartPt);

        // loop over one segment of the trace
        for(i++; i < d.length; i++) {
            clusterHighPt = getPt(i);
            if(!clusterHighPt) {
                if(connectGaps) continue;
                else break;
            }

            // can't decimate if nonlinear line shape
            // TODO: we *could* decimate [hv]{2,3} shapes if we restricted clusters to horz or vert again
            // but spline would be verrry awkward to decimate
            if(!linear) {
                addPt(clusterHighPt);
                continue;
            }

            clusterRefDist = ptDist(clusterHighPt, clusterStartPt);

            if(clusterRefDist < getTolerance(clusterHighPt) * minTolerance) continue;

            clusterUnitVector = [
                (clusterHighPt[0] - clusterStartPt[0]) / clusterRefDist,
                (clusterHighPt[1] - clusterStartPt[1]) / clusterRefDist
            ];

            clusterLowPt = clusterStartPt;
            clusterHighVal = clusterRefDist;
            clusterLowVal = clusterMinDeviation = clusterMaxDeviation = 0;
            clusterHighFirst = false;
            clusterEndPt = clusterHighPt;

            // loop over one cluster of points that collapse onto one line
            for(i++; i < d.length; i++) {
                thisPt = getPt(i);
                if(!thisPt) {
                    if(connectGaps) continue;
                    else break;
                }
                thisVector = [
                    thisPt[0] - clusterStartPt[0],
                    thisPt[1] - clusterStartPt[1]
                ];
                // cross product (or dot with normal to the cluster vector)
                thisDeviation = thisVector[0] * clusterUnitVector[1] - thisVector[1] * clusterUnitVector[0];
                clusterMinDeviation = Math.min(clusterMinDeviation, thisDeviation);
                clusterMaxDeviation = Math.max(clusterMaxDeviation, thisDeviation);

                if(clusterMaxDeviation - clusterMinDeviation > getTolerance(thisPt)) break;

                clusterEndPt = thisPt;
                thisVal = thisVector[0] * clusterUnitVector[0] + thisVector[1] * clusterUnitVector[1];

                if(thisVal > clusterHighVal) {
                    clusterHighVal = thisVal;
                    clusterHighPt = thisPt;
                    clusterHighFirst = false;
                } else if(thisVal < clusterLowVal) {
                    clusterLowVal = thisVal;
                    clusterLowPt = thisPt;
                    clusterHighFirst = true;
                }
            }

            // insert this cluster into pts
            // we've already inserted the start pt, now check if we have high and low pts
            if(clusterHighFirst) {
                addPt(clusterHighPt);
                if(clusterEndPt !== clusterLowPt) addPt(clusterLowPt);
            } else {
                if(clusterLowPt !== clusterStartPt) addPt(clusterLowPt);
                if(clusterEndPt !== clusterHighPt) addPt(clusterHighPt);
            }
            // and finally insert the end pt
            addPt(clusterEndPt);

            // have we reached the end of this segment?
            if(i >= d.length || !thisPt) break;

            // otherwise we have an out-of-cluster point to insert as next clusterStartPt
            addPt(thisPt);
            clusterStartPt = thisPt;
        }

        // to get fills right - repeat what we did at the start
        if(lastFarPt) updateEdge([lastXEdge || lastFarPt[0], lastYEdge || lastFarPt[1]]);

        segments.push(pts.slice(0, pti));
    }

    return segments;
};

},{"../../constants/numerical":334,"../../lib":353,"./constants":496}],505:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


// common to 'scatter' and 'scatterternary'
module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
    var shape = coerce('line.shape');
    if(shape === 'spline') coerce('line.smoothing');
};

},{}],506:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = function linkTraces(gd, plotinfo, cdscatter) {
    var cd, trace;
    var prevtrace = null;

    for(var i = 0; i < cdscatter.length; ++i) {
        cd = cdscatter[i];
        trace = cd[0].trace;

        // Note: The check which ensures all cdscatter here are for the same axis and
        // are either cartesian or scatterternary has been removed. This code assumes
        // the passed scattertraces have been filtered to the proper plot types and
        // the proper subplots.
        if(trace.visible === true) {
            trace._nexttrace = null;

            if(['tonextx', 'tonexty', 'tonext'].indexOf(trace.fill) !== -1) {
                trace._prevtrace = prevtrace;

                if(prevtrace) {
                    prevtrace._nexttrace = trace;
                }
            }

            prevtrace = trace;
        } else {
            trace._prevtrace = trace._nexttrace = null;
        }
    }
};

},{}],507:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');


// used in the drawing step for 'scatter' and 'scattegeo' and
// in the convert step for 'scatter3d'
module.exports = function makeBubbleSizeFn(trace) {
    var marker = trace.marker,
        sizeRef = marker.sizeref || 1,
        sizeMin = marker.sizemin || 0;

    // for bubble charts, allow scaling the provided value linearly
    // and by area or diameter.
    // Note this only applies to the array-value sizes

    var baseFn = (marker.sizemode === 'area') ?
            function(v) { return Math.sqrt(v / sizeRef); } :
            function(v) { return v / sizeRef; };

    // TODO add support for position/negative bubbles?
    // TODO add 'sizeoffset' attribute?
    return function(v) {
        var baseSize = baseFn(v / 2);

        // don't show non-numeric and negative sizes
        return (isNumeric(baseSize) && (baseSize > 0)) ?
            Math.max(baseSize, sizeMin) :
            0;
    };
};

},{"fast-isnumeric":68}],508:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');
var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleDefaults = require('../../components/colorscale/defaults');

var subTypes = require('./subtypes');

/*
 * opts: object of flags to control features not all marker users support
 *   noLine: caller does not support marker lines
 *   gradient: caller supports gradients
 */
module.exports = function markerDefaults(traceIn, traceOut, defaultColor, layout, coerce, opts) {
    var isBubble = subTypes.isBubble(traceIn),
        lineColor = (traceIn.line || {}).color,
        defaultMLC;

    opts = opts || {};

    // marker.color inherit from line.color (even if line.color is an array)
    if(lineColor) defaultColor = lineColor;

    coerce('marker.symbol');
    coerce('marker.opacity', isBubble ? 0.7 : 1);
    coerce('marker.size');

    coerce('marker.color', defaultColor);
    if(hasColorscale(traceIn, 'marker')) {
        colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'marker.', cLetter: 'c'});
    }

    if(!opts.noLine) {
        // if there's a line with a different color than the marker, use
        // that line color as the default marker line color
        // (except when it's an array)
        // mostly this is for transparent markers to behave nicely
        if(lineColor && !Array.isArray(lineColor) && (traceOut.marker.color !== lineColor)) {
            defaultMLC = lineColor;
        }
        else if(isBubble) defaultMLC = Color.background;
        else defaultMLC = Color.defaultLine;

        coerce('marker.line.color', defaultMLC);
        if(hasColorscale(traceIn, 'marker.line')) {
            colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'marker.line.', cLetter: 'c'});
        }

        coerce('marker.line.width', isBubble ? 1 : 0);
    }

    if(isBubble) {
        coerce('marker.sizeref');
        coerce('marker.sizemin');
        coerce('marker.sizemode');
    }

    if(opts.gradient) {
        var gradientType = coerce('marker.gradient.type');
        if(gradientType !== 'none') {
            coerce('marker.gradient.color');
        }
    }
};

},{"../../components/color":233,"../../components/colorscale/defaults":242,"../../components/colorscale/has_colorscale":246,"./subtypes":512}],509:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Lib = require('../../lib');
var Drawing = require('../../components/drawing');
var ErrorBars = require('../../components/errorbars');

var subTypes = require('./subtypes');
var linePoints = require('./line_points');
var linkTraces = require('./link_traces');
var polygonTester = require('../../lib/polygon').tester;

module.exports = function plot(gd, plotinfo, cdscatter, transitionOpts, makeOnCompleteCallback) {
    var i, uids, selection, join, onComplete;

    var scatterlayer = plotinfo.plot.select('g.scatterlayer');

    // If transition config is provided, then it is only a partial replot and traces not
    // updated are removed.
    var isFullReplot = !transitionOpts;
    var hasTransition = !!transitionOpts && transitionOpts.duration > 0;

    selection = scatterlayer.selectAll('g.trace');

    join = selection.data(cdscatter, function(d) { return d[0].trace.uid; });

    // Append new traces:
    join.enter().append('g')
        .attr('class', function(d) {
            return 'trace scatter trace' + d[0].trace.uid;
        })
        .style('stroke-miterlimit', 2);

    // After the elements are created but before they've been draw, we have to perform
    // this extra step of linking the traces. This allows appending of fill layers so that
    // the z-order of fill layers is correct.
    linkTraces(gd, plotinfo, cdscatter);

    createFills(gd, scatterlayer, plotinfo);

    // Sort the traces, once created, so that the ordering is preserved even when traces
    // are shown and hidden. This is needed since we're not just wiping everything out
    // and recreating on every update.
    for(i = 0, uids = {}; i < cdscatter.length; i++) {
        uids[cdscatter[i][0].trace.uid] = i;
    }

    scatterlayer.selectAll('g.trace').sort(function(a, b) {
        var idx1 = uids[a[0].trace.uid];
        var idx2 = uids[b[0].trace.uid];
        return idx1 > idx2 ? 1 : -1;
    });

    if(hasTransition) {
        if(makeOnCompleteCallback) {
            // If it was passed a callback to register completion, make a callback. If
            // this is created, then it must be executed on completion, otherwise the
            // pos-transition redraw will not execute:
            onComplete = makeOnCompleteCallback();
        }

        var transition = d3.transition()
            .duration(transitionOpts.duration)
            .ease(transitionOpts.easing)
            .each('end', function() {
                onComplete && onComplete();
            })
            .each('interrupt', function() {
                onComplete && onComplete();
            });

        transition.each(function() {
            // Must run the selection again since otherwise enters/updates get grouped together
            // and these get executed out of order. Except we need them in order!
            scatterlayer.selectAll('g.trace').each(function(d, i) {
                plotOne(gd, i, plotinfo, d, cdscatter, this, transitionOpts);
            });
        });
    } else {
        scatterlayer.selectAll('g.trace').each(function(d, i) {
            plotOne(gd, i, plotinfo, d, cdscatter, this, transitionOpts);
        });
    }

    if(isFullReplot) {
        join.exit().remove();
    }

    // remove paths that didn't get used
    scatterlayer.selectAll('path:not([d])').remove();
};

function createFills(gd, scatterlayer, plotinfo) {
    var trace;

    scatterlayer.selectAll('g.trace').each(function(d) {
        var tr = d3.select(this);

        // Loop only over the traces being redrawn:
        trace = d[0].trace;

        // make the fill-to-next path now for the NEXT trace, so it shows
        // behind both lines.
        if(trace._nexttrace) {
            trace._nextFill = tr.select('.js-fill.js-tonext');
            if(!trace._nextFill.size()) {

                // If there is an existing tozero fill, we must insert this *after* that fill:
                var loc = ':first-child';
                if(tr.select('.js-fill.js-tozero').size()) {
                    loc += ' + *';
                }

                trace._nextFill = tr.insert('path', loc).attr('class', 'js-fill js-tonext');
            }
        } else {
            tr.selectAll('.js-fill.js-tonext').remove();
            trace._nextFill = null;
        }

        if(trace.fill && (trace.fill.substr(0, 6) === 'tozero' || trace.fill === 'toself' ||
                (trace.fill.substr(0, 2) === 'to' && !trace._prevtrace))) {
            trace._ownFill = tr.select('.js-fill.js-tozero');
            if(!trace._ownFill.size()) {
                trace._ownFill = tr.insert('path', ':first-child').attr('class', 'js-fill js-tozero');
            }
        } else {
            tr.selectAll('.js-fill.js-tozero').remove();
            trace._ownFill = null;
        }

        tr.selectAll('.js-fill').call(Drawing.setClipUrl, plotinfo.layerClipId);
    });
}

function plotOne(gd, idx, plotinfo, cdscatter, cdscatterAll, element, transitionOpts) {
    var join, i;

    // Since this has been reorganized and we're executing this on individual traces,
    // we need to pass it the full list of cdscatter as well as this trace's index (idx)
    // since it does an internal n^2 loop over comparisons with other traces:
    selectMarkers(gd, idx, plotinfo, cdscatter, cdscatterAll);

    var hasTransition = !!transitionOpts && transitionOpts.duration > 0;

    function transition(selection) {
        return hasTransition ? selection.transition() : selection;
    }

    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis;

    var trace = cdscatter[0].trace,
        line = trace.line,
        tr = d3.select(element);

    // (so error bars can find them along with bars)
    // error bars are at the bottom
    tr.call(ErrorBars.plot, plotinfo, transitionOpts);

    if(trace.visible !== true) return;

    transition(tr).style('opacity', trace.opacity);

    // BUILD LINES AND FILLS
    var ownFillEl3, tonext;
    var ownFillDir = trace.fill.charAt(trace.fill.length - 1);
    if(ownFillDir !== 'x' && ownFillDir !== 'y') ownFillDir = '';

    // store node for tweaking by selectPoints
    cdscatter[0].node3 = tr;

    var prevRevpath = '';
    var prevPolygons = [];
    var prevtrace = trace._prevtrace;

    if(prevtrace) {
        prevRevpath = prevtrace._prevRevpath || '';
        tonext = prevtrace._nextFill;
        prevPolygons = prevtrace._polygons;
    }

    var thispath,
        thisrevpath,
        // fullpath is all paths for this curve, joined together straight
        // across gaps, for filling
        fullpath = '',
        // revpath is fullpath reversed, for fill-to-next
        revpath = '',
        // functions for converting a point array to a path
        pathfn, revpathbase, revpathfn,
        // variables used before and after the data join
        pt0, lastSegment, pt1, thisPolygons;

    // initialize line join data / method
    var segments = [],
        makeUpdate = Lib.noop;

    ownFillEl3 = trace._ownFill;

    if(subTypes.hasLines(trace) || trace.fill !== 'none') {

        if(tonext) {
            // This tells .style which trace to use for fill information:
            tonext.datum(cdscatter);
        }

        if(['hv', 'vh', 'hvh', 'vhv'].indexOf(line.shape) !== -1) {
            pathfn = Drawing.steps(line.shape);
            revpathbase = Drawing.steps(
                line.shape.split('').reverse().join('')
            );
        }
        else if(line.shape === 'spline') {
            pathfn = revpathbase = function(pts) {
                var pLast = pts[pts.length - 1];
                if(pts.length > 1 && pts[0][0] === pLast[0] && pts[0][1] === pLast[1]) {
                    // identical start and end points: treat it as a
                    // closed curve so we don't get a kink
                    return Drawing.smoothclosed(pts.slice(1), line.smoothing);
                }
                else {
                    return Drawing.smoothopen(pts, line.smoothing);
                }
            };
        }
        else {
            pathfn = revpathbase = function(pts) {
                return 'M' + pts.join('L');
            };
        }

        revpathfn = function(pts) {
            // note: this is destructive (reverses pts in place) so can't use pts after this
            return revpathbase(pts.reverse());
        };

        segments = linePoints(cdscatter, {
            xaxis: xa,
            yaxis: ya,
            connectGaps: trace.connectgaps,
            baseTolerance: Math.max(line.width || 1, 3) / 4,
            shape: line.shape,
            simplify: line.simplify
        });

        // since we already have the pixel segments here, use them to make
        // polygons for hover on fill
        // TODO: can we skip this if hoveron!=fills? That would mean we
        // need to redraw when you change hoveron...
        thisPolygons = trace._polygons = new Array(segments.length);
        for(i = 0; i < segments.length; i++) {
            trace._polygons[i] = polygonTester(segments[i]);
        }

        if(segments.length) {
            pt0 = segments[0][0];
            lastSegment = segments[segments.length - 1];
            pt1 = lastSegment[lastSegment.length - 1];
        }

        makeUpdate = function(isEnter) {
            return function(pts) {
                thispath = pathfn(pts);
                thisrevpath = revpathfn(pts);
                if(!fullpath) {
                    fullpath = thispath;
                    revpath = thisrevpath;
                }
                else if(ownFillDir) {
                    fullpath += 'L' + thispath.substr(1);
                    revpath = thisrevpath + ('L' + revpath.substr(1));
                }
                else {
                    fullpath += 'Z' + thispath;
                    revpath = thisrevpath + 'Z' + revpath;
                }

                if(subTypes.hasLines(trace) && pts.length > 1) {
                    var el = d3.select(this);

                    // This makes the coloring work correctly:
                    el.datum(cdscatter);

                    if(isEnter) {
                        transition(el.style('opacity', 0)
                            .attr('d', thispath)
                            .call(Drawing.lineGroupStyle))
                                .style('opacity', 1);
                    } else {
                        var sel = transition(el);
                        sel.attr('d', thispath);
                        Drawing.singleLineStyle(cdscatter, sel);
                    }
                }
            };
        };
    }

    var lineJoin = tr.selectAll('.js-line').data(segments);

    transition(lineJoin.exit())
        .style('opacity', 0)
        .remove();

    lineJoin.each(makeUpdate(false));

    lineJoin.enter().append('path')
        .classed('js-line', true)
        .style('vector-effect', 'non-scaling-stroke')
        .call(Drawing.lineGroupStyle)
        .each(makeUpdate(true));

    Drawing.setClipUrl(lineJoin, plotinfo.layerClipId);

    if(segments.length) {
        if(ownFillEl3) {
            if(pt0 && pt1) {
                if(ownFillDir) {
                    if(ownFillDir === 'y') {
                        pt0[1] = pt1[1] = ya.c2p(0, true);
                    }
                    else if(ownFillDir === 'x') {
                        pt0[0] = pt1[0] = xa.c2p(0, true);
                    }

                    // fill to zero: full trace path, plus extension of
                    // the endpoints to the appropriate axis
                    // For the sake of animations, wrap the points around so that
                    // the points on the axes are the first two points. Otherwise
                    // animations get a little crazy if the number of points changes.
                    transition(ownFillEl3).attr('d', 'M' + pt1 + 'L' + pt0 + 'L' + fullpath.substr(1))
                        .call(Drawing.singleFillStyle);
                } else {
                    // fill to self: just join the path to itself
                    transition(ownFillEl3).attr('d', fullpath + 'Z')
                        .call(Drawing.singleFillStyle);
                }
            }
        }
        else if(trace.fill.substr(0, 6) === 'tonext' && fullpath && prevRevpath) {
            // fill to next: full trace path, plus the previous path reversed
            if(trace.fill === 'tonext') {
                // tonext: for use by concentric shapes, like manually constructed
                // contours, we just add the two paths closed on themselves.
                // This makes strange results if one path is *not* entirely
                // inside the other, but then that is a strange usage.
                transition(tonext).attr('d', fullpath + 'Z' + prevRevpath + 'Z')
                    .call(Drawing.singleFillStyle);
            }
            else {
                // tonextx/y: for now just connect endpoints with lines. This is
                // the correct behavior if the endpoints are at the same value of
                // y/x, but if they *aren't*, we should ideally do more complicated
                // things depending on whether the new endpoint projects onto the
                // existing curve or off the end of it
                transition(tonext).attr('d', fullpath + 'L' + prevRevpath.substr(1) + 'Z')
                    .call(Drawing.singleFillStyle);
            }
            trace._polygons = trace._polygons.concat(prevPolygons);
        }
        trace._prevRevpath = revpath;
        trace._prevPolygons = thisPolygons;
    }


    function visFilter(d) {
        return d.filter(function(v) { return v.vis; });
    }

    function keyFunc(d) {
        return d.id;
    }

    // Returns a function if the trace is keyed, otherwise returns undefined
    function getKeyFunc(trace) {
        if(trace.ids) {
            return keyFunc;
        }
    }

    function hideFilter() {
        return false;
    }

    function makePoints(d) {
        var join, selection, hasNode;

        var trace = d[0].trace,
            s = d3.select(this),
            showMarkers = subTypes.hasMarkers(trace),
            showText = subTypes.hasText(trace);

        var keyFunc = getKeyFunc(trace),
            markerFilter = hideFilter,
            textFilter = hideFilter;

        if(showMarkers) {
            markerFilter = (trace.marker.maxdisplayed || trace._needsCull) ? visFilter : Lib.identity;
        }

        if(showText) {
            textFilter = (trace.marker.maxdisplayed || trace._needsCull) ? visFilter : Lib.identity;
        }

        // marker points

        selection = s.selectAll('path.point');

        join = selection.data(markerFilter, keyFunc);

        var enter = join.enter().append('path')
            .classed('point', true);

        if(hasTransition) {
            enter
                .call(Drawing.pointStyle, trace, gd)
                .call(Drawing.translatePoints, xa, ya)
                .style('opacity', 0)
                .transition()
                .style('opacity', 1);
        }

        var markerScale = showMarkers && Drawing.tryColorscale(trace.marker, '');
        var lineScale = showMarkers && Drawing.tryColorscale(trace.marker, 'line');

        join.order();

        join.each(function(d) {
            var el = d3.select(this);
            var sel = transition(el);
            hasNode = Drawing.translatePoint(d, sel, xa, ya);

            if(hasNode) {
                Drawing.singlePointStyle(d, sel, trace, markerScale, lineScale, gd);

                if(plotinfo.layerClipId) {
                    Drawing.hideOutsideRangePoint(d, sel, xa, ya);
                }

                if(trace.customdata) {
                    el.classed('plotly-customdata', d.data !== null && d.data !== undefined);
                }
            } else {
                sel.remove();
            }
        });

        if(hasTransition) {
            join.exit().transition()
                .style('opacity', 0)
                .remove();
        } else {
            join.exit().remove();
        }

        // text points
        selection = s.selectAll('g');
        join = selection.data(textFilter, keyFunc);

        // each text needs to go in its own 'g' in case
        // it gets converted to mathjax
        join.enter().append('g').classed('textpoint', true).append('text');

        join.order();

        join.each(function(d) {
            var g = d3.select(this);
            var sel = transition(g.select('text'));
            hasNode = Drawing.translatePoint(d, sel, xa, ya);

            if(hasNode) {
                if(plotinfo.layerClipId) {
                    Drawing.hideOutsideRangePoint(d, g, xa, ya);
                }
            } else {
                g.remove();
            }
        });

        join.selectAll('text')
            .call(Drawing.textPointStyle, trace, gd)
            .each(function(d) {
                // This just *has* to be totally custom becuase of SVG text positioning :(
                // It's obviously copied from translatePoint; we just can't use that
                var x = xa.c2p(d.x);
                var y = ya.c2p(d.y);

                d3.select(this).selectAll('tspan.line').each(function() {
                    transition(d3.select(this)).attr({x: x, y: y});
                });
            });

        join.exit().remove();
    }

    // NB: selectAll is evaluated on instantiation:
    var pointSelection = tr.selectAll('.points');

    // Join with new data
    join = pointSelection.data([cdscatter]);

    // Transition existing, but don't defer this to an async .transition since
    // there's no timing involved:
    pointSelection.each(makePoints);

    join.enter().append('g')
        .classed('points', true)
        .each(makePoints);

    join.exit().remove();

    // lastly, clip points groups of `cliponaxis !== false` traces
    // on `plotinfo._hasClipOnAxisFalse === true` subplots
    join.each(function(d) {
        var hasClipOnAxisFalse = d[0].trace.cliponaxis === false;
        Drawing.setClipUrl(d3.select(this), hasClipOnAxisFalse ? null : plotinfo.layerClipId);
    });
}

function selectMarkers(gd, idx, plotinfo, cdscatter, cdscatterAll) {
    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        xr = d3.extent(Lib.simpleMap(xa.range, xa.r2c)),
        yr = d3.extent(Lib.simpleMap(ya.range, ya.r2c));

    var trace = cdscatter[0].trace;
    if(!subTypes.hasMarkers(trace)) return;
    // if marker.maxdisplayed is used, select a maximum of
    // mnum markers to show, from the set that are in the viewport
    var mnum = trace.marker.maxdisplayed;

    // TODO: remove some as we get away from the viewport?
    if(mnum === 0) return;

    var cd = cdscatter.filter(function(v) {
            return v.x >= xr[0] && v.x <= xr[1] && v.y >= yr[0] && v.y <= yr[1];
        }),
        inc = Math.ceil(cd.length / mnum),
        tnum = 0;
    cdscatterAll.forEach(function(cdj, j) {
        var tracei = cdj[0].trace;
        if(subTypes.hasMarkers(tracei) &&
                tracei.marker.maxdisplayed > 0 && j < idx) {
            tnum++;
        }
    });

    // if multiple traces use maxdisplayed, stagger which markers we
    // display this formula offsets successive traces by 1/3 of the
    // increment, adding an extra small amount after each triplet so
    // it's not quite periodic
    var i0 = Math.round(tnum * inc / 3 + Math.floor(tnum / 3) * inc / 7.1);

    // for error bars: save in cd which markers to show
    // so we don't have to repeat this
    cdscatter.forEach(function(v) { delete v.vis; });
    cd.forEach(function(v, i) {
        if(Math.round((i + i0) % inc) === 0) v.vis = true;
    });
}

},{"../../components/drawing":257,"../../components/errorbars":263,"../../lib":353,"../../lib/polygon":364,"./line_points":504,"./link_traces":506,"./subtypes":512,"d3":62}],510:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var subtypes = require('./subtypes');
var DESELECTDIM = require('../../constants/interactions').DESELECTDIM;

module.exports = function selectPoints(searchInfo, polygon) {
    var cd = searchInfo.cd,
        xa = searchInfo.xaxis,
        ya = searchInfo.yaxis,
        selection = [],
        trace = cd[0].trace,
        marker = trace.marker,
        i,
        di,
        x,
        y;

    // TODO: include lines? that would require per-segment line properties
    var hasOnlyLines = (!subtypes.hasMarkers(trace) && !subtypes.hasText(trace));
    if(hasOnlyLines) return [];

    var opacity = Array.isArray(marker.opacity) ? 1 : marker.opacity;

    if(polygon === false) { // clear selection
        for(i = 0; i < cd.length; i++) cd[i].dim = 0;
    }
    else {
        for(i = 0; i < cd.length; i++) {
            di = cd[i];
            x = xa.c2p(di.x);
            y = ya.c2p(di.y);

            if(polygon.contains([x, y])) {
                selection.push({
                    pointNumber: i,
                    x: di.x,
                    y: di.y
                });
                di.dim = 0;
            }
            else di.dim = 1;
        }
    }

    // do the dimming here, as well as returning the selection
    // The logic here duplicates Drawing.pointStyle, but I don't want
    // d.dim in pointStyle in case something goes wrong with selection.
    cd[0].node3.selectAll('path.point')
        .style('opacity', function(d) {
            return ((d.mo + 1 || opacity + 1) - 1) * (d.dim ? DESELECTDIM : 1);
        });
    cd[0].node3.selectAll('text')
        .style('opacity', function(d) {
            return d.dim ? DESELECTDIM : 1;
        });

    return selection;
};

},{"../../constants/interactions":333,"./subtypes":512}],511:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Drawing = require('../../components/drawing');
var ErrorBars = require('../../components/errorbars');


module.exports = function style(gd) {
    var s = d3.select(gd).selectAll('g.trace.scatter');

    s.style('opacity', function(d) {
        return d[0].trace.opacity;
    });

    s.selectAll('g.points')
        .each(function(d) {
            var el = d3.select(this);
            var pts = el.selectAll('path.point');
            var trace = d.trace || d[0].trace;

            pts.call(Drawing.pointStyle, trace, gd);

            el.selectAll('text')
                .call(Drawing.textPointStyle, trace, gd);
        });

    s.selectAll('g.trace path.js-line')
        .call(Drawing.lineGroupStyle);

    s.selectAll('g.trace path.js-fill')
        .call(Drawing.fillGroupStyle);

    s.call(ErrorBars.style);
};

},{"../../components/drawing":257,"../../components/errorbars":263,"d3":62}],512:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

module.exports = {
    hasLines: function(trace) {
        return trace.visible && trace.mode &&
            trace.mode.indexOf('lines') !== -1;
    },

    hasMarkers: function(trace) {
        return trace.visible && trace.mode &&
            trace.mode.indexOf('markers') !== -1;
    },

    hasText: function(trace) {
        return trace.visible && trace.mode &&
            trace.mode.indexOf('text') !== -1;
    },

    isBubble: function(trace) {
        return Lib.isPlainObject(trace.marker) &&
            Array.isArray(trace.marker.size);
    }
};

},{"../../lib":353}],513:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


// common to 'scatter', 'scatter3d' and 'scattergeo'
module.exports = function(traceIn, traceOut, layout, coerce) {
    coerce('textposition');
    Lib.coerceFont(coerce, 'textfont', layout.font);
};

},{"../../lib":353}],514:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');


module.exports = function handleXYDefaults(traceIn, traceOut, layout, coerce) {
    var len,
        x = coerce('x'),
        y = coerce('y');

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y'], layout);

    if(x) {
        if(y) {
            len = Math.min(x.length, y.length);
            // TODO: not sure we should do this here... but I think
            // the way it works in calc is wrong, because it'll delete data
            // which could be a problem eg in streaming / editing if x and y
            // come in at different times
            // so we need to revisit calc before taking this out
            if(len < x.length) traceOut.x = x.slice(0, len);
            if(len < y.length) traceOut.y = y.slice(0, len);
        }
        else {
            len = x.length;
            coerce('y0');
            coerce('dy');
        }
    }
    else {
        if(!y) return 0;

        len = traceOut.y.length;
        coerce('x0');
        coerce('dx');
    }
    return len;
};

},{"../../registry":436}],515:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var arraysToCalcdata = require('../scatter/arrays_to_calcdata');
var calcColorscales = require('../scatter/colorscale_calc');


/**
 * This is a kludge to put the array attributes into
 * calcdata the way Scatter.plot does, so that legends and
 * popovers know what to do with them.
 */
module.exports = function calc(gd, trace) {
    var cd = [{x: false, y: false, trace: trace, t: {}}];

    arraysToCalcdata(cd, trace);
    calcColorscales(trace);

    return cd;
};

},{"../scatter/arrays_to_calcdata":490,"../scatter/colorscale_calc":495}],516:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorAttributes = require('../../components/colorscale/color_attributes');

var DASHES = require('../../constants/gl2d_dashes');
var MARKERS = require('../../constants/gl2d_markers');
var extendFlat = require('../../lib/extend').extendFlat;
var overrideAll = require('../../plot_api/edit_types').overrideAll;

var scatterLineAttrs = scatterAttrs.line,
    scatterMarkerAttrs = scatterAttrs.marker,
    scatterMarkerLineAttrs = scatterMarkerAttrs.line;

var attrs = module.exports = overrideAll({
    x: scatterAttrs.x,
    x0: scatterAttrs.x0,
    dx: scatterAttrs.dx,
    y: scatterAttrs.y,
    y0: scatterAttrs.y0,
    dy: scatterAttrs.dy,

    text: extendFlat({}, scatterAttrs.text, {
        
    }),
    mode: {
        valType: 'flaglist',
        flags: ['lines', 'markers'],
        extras: ['none'],
        
        
    },
    line: {
        color: scatterLineAttrs.color,
        width: scatterLineAttrs.width,
        dash: {
            valType: 'enumerated',
            values: Object.keys(DASHES),
            dflt: 'solid',
            
            
        }
    },
    marker: extendFlat({}, colorAttributes('marker'), {
        symbol: {
            valType: 'enumerated',
            values: Object.keys(MARKERS),
            dflt: 'circle',
            arrayOk: true,
            
            
        },
        size: scatterMarkerAttrs.size,
        sizeref: scatterMarkerAttrs.sizeref,
        sizemin: scatterMarkerAttrs.sizemin,
        sizemode: scatterMarkerAttrs.sizemode,
        opacity: scatterMarkerAttrs.opacity,
        showscale: scatterMarkerAttrs.showscale,
        colorbar: scatterMarkerAttrs.colorbar,
        line: extendFlat({}, colorAttributes('marker.line'), {
            width: scatterMarkerLineAttrs.width
        })
    }),
    connectgaps: scatterAttrs.connectgaps,
    fill: extendFlat({}, scatterAttrs.fill, {
        values: ['none', 'tozeroy', 'tozerox']
    }),
    fillcolor: scatterAttrs.fillcolor,

    error_y: scatterAttrs.error_y,
    error_x: scatterAttrs.error_x
}, 'calc', 'nested');

attrs.x.editType = attrs.y.editType = attrs.x0.editType = attrs.y0.editType = 'calc+clearAxisTypes';

},{"../../components/colorscale/color_attributes":240,"../../constants/gl2d_dashes":331,"../../constants/gl2d_markers":332,"../../lib/extend":344,"../../plot_api/edit_types":380,"../scatter/attributes":491}],517:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Axes = require('../../plots/cartesian/axes');
var arraysToCalcdata = require('../scatter/arrays_to_calcdata');
var calcColorscales = require('../scatter/colorscale_calc');

module.exports = function calc(gd, trace) {
    var dragmode = gd._fullLayout.dragmode;
    var cd;

    if(dragmode === 'lasso' || dragmode === 'select') {
        var xa = Axes.getFromId(gd, trace.xaxis || 'x');
        var ya = Axes.getFromId(gd, trace.yaxis || 'y');

        var x = xa.makeCalcdata(trace, 'x');
        var y = ya.makeCalcdata(trace, 'y');

        var serieslen = Math.min(x.length, y.length), i;

        // create the "calculated data" to plot
        cd = new Array(serieslen);

        for(i = 0; i < serieslen; i++) {
            cd[i] = {x: x[i], y: y[i]};
        }
    } else {
        cd = [{x: false, y: false, trace: trace, t: {}}];
        arraysToCalcdata(cd, trace);
    }

    calcColorscales(trace);

    return cd;
};

},{"../../plots/cartesian/axes":396,"../scatter/arrays_to_calcdata":490,"../scatter/colorscale_calc":495}],518:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createScatter = require('gl-scatter2d');
var createFancyScatter = require('gl-scatter2d-sdf');
var createLine = require('gl-line2d');
var createError = require('gl-error2d');
var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var autoType = require('../../plots/cartesian/axis_autotype');
var ErrorBars = require('../../components/errorbars');
var str2RGBArray = require('../../lib/str2rgbarray');
var truncate = require('../../lib/typed_array_truncate');
var formatColor = require('../../lib/gl_format_color');
var subTypes = require('../scatter/subtypes');
var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');
var getTraceColor = require('../scatter/get_trace_color');
var MARKER_SYMBOLS = require('../../constants/gl2d_markers');
var DASHES = require('../../constants/gl2d_dashes');
var DESELECTDIM = require('../../constants/interactions').DESELECTDIM;

var AXES = ['xaxis', 'yaxis'];
var TRANSPARENT = [0, 0, 0, 0];

function LineWithMarkers(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'scattergl';

    this.pickXData = [];
    this.pickYData = [];
    this.xData = [];
    this.yData = [];
    this.textLabels = [];
    this.color = 'rgb(0, 0, 0)';
    this.name = '';
    this.hoverinfo = 'all';
    this.connectgaps = true;

    this.index = null;
    this.idToIndex = [];
    this.bounds = [0, 0, 0, 0];

    this.isVisible = false;
    this.hasLines = false;
    this.hasErrorX = false;
    this.hasErrorY = false;
    this.hasMarkers = false;

    this.line = this.initObject(createLine, {
        positions: new Float64Array(0),
        color: [0, 0, 0, 1],
        width: 1,
        fill: [false, false, false, false],
        fillColor: [
            [0, 0, 0, 1],
            [0, 0, 0, 1],
            [0, 0, 0, 1],
            [0, 0, 0, 1]],
        dashes: [1],
    }, 0);

    this.errorX = this.initObject(createError, {
        positions: new Float64Array(0),
        errors: new Float64Array(0),
        lineWidth: 1,
        capSize: 0,
        color: [0, 0, 0, 1]
    }, 1);

    this.errorY = this.initObject(createError, {
        positions: new Float64Array(0),
        errors: new Float64Array(0),
        lineWidth: 1,
        capSize: 0,
        color: [0, 0, 0, 1]
    }, 2);

    var scatterOptions0 = {
        positions: new Float64Array(0),
        sizes: [],
        colors: [],
        glyphs: [],
        borderWidths: [],
        borderColors: [],
        size: 12,
        color: [0, 0, 0, 1],
        borderSize: 1,
        borderColor: [0, 0, 0, 1],
        snapPoints: true
    };
    var scatterOptions1 = Lib.extendFlat({}, scatterOptions0, {snapPoints: false});

    this.scatter = this.initObject(createScatter, scatterOptions0, 3);
    this.fancyScatter = this.initObject(createFancyScatter, scatterOptions0, 4);
    this.selectScatter = this.initObject(createScatter, scatterOptions1, 5);
}

var proto = LineWithMarkers.prototype;

proto.initObject = function(createFn, options, objIndex) {
    var _this = this;
    var glplot = _this.scene.glplot;
    var options0 = Lib.extendFlat({}, options);
    var obj = null;

    function update() {
        if(!obj) {
            obj = createFn(glplot, options);
            obj._trace = _this;
            obj._index = objIndex;
        }
        obj.update(options);
    }

    function clear() {
        if(obj) obj.update(options0);
    }

    function dispose() {
        if(obj) obj.dispose();
    }

    return {
        options: options,
        update: update,
        clear: clear,
        dispose: dispose
    };
};

proto.handlePick = function(pickResult) {
    var index = pickResult.pointId;

    if(pickResult.object !== this.line || this.connectgaps) {
        index = this.idToIndex[pickResult.pointId];
    }

    var x = this.pickXData[index];

    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: [
            isNumeric(x) || !Lib.isDateTime(x) ? x : Lib.dateTime2ms(x),
            this.pickYData[index]
        ],
        textLabel: Array.isArray(this.textLabels) ?
            this.textLabels[index] :
            this.textLabels,
        color: Array.isArray(this.color) ?
            this.color[index] :
            this.color,
        name: this.name,
        pointIndex: index,
        hoverinfo: this.hoverinfo
    };
};

// check if trace is fancy
proto.isFancy = function(options) {
    if(this.scene.xaxis.type !== 'linear' && this.scene.xaxis.type !== 'date') return true;
    if(this.scene.yaxis.type !== 'linear') return true;

    if(!options.x || !options.y) return true;

    if(this.hasMarkers) {
        var marker = options.marker || {};

        if(Array.isArray(marker.symbol) ||
             marker.symbol !== 'circle' ||
             Array.isArray(marker.size) ||
             Array.isArray(marker.color) ||
             Array.isArray(marker.line.width) ||
             Array.isArray(marker.line.color) ||
             Array.isArray(marker.opacity)
        ) return true;
    }

    if(this.hasLines && !this.connectgaps) return true;

    if(this.hasErrorX) return true;
    if(this.hasErrorY) return true;

    return false;
};

// handle the situation where values can be array-like or not array like
function convertArray(convert, data, count) {
    if(!Array.isArray(data)) data = [data];

    return _convertArray(convert, data, count);
}

function _convertArray(convert, data, count) {
    var result = new Array(count),
        data0 = data[0];

    for(var i = 0; i < count; ++i) {
        result[i] = (i >= data.length) ?
            convert(data0) :
            convert(data[i]);
    }

    return result;
}

var convertNumber = convertArray.bind(null, function(x) { return +x; });
var convertColorBase = convertArray.bind(null, str2RGBArray);
var convertSymbol = convertArray.bind(null, function(x) {
    return MARKER_SYMBOLS[x] ? x : 'circle';
});

function convertColor(color, opacity, count) {
    return _convertColor(
        convertColorBase(color, count),
        convertNumber(opacity, count),
        count
    );
}

function convertColorScale(containerIn, markerOpacity, traceOpacity, count) {
    var colors = formatColor(containerIn, markerOpacity, count);

    colors = Array.isArray(colors[0]) ?
        colors :
        _convertArray(Lib.identity, [colors], count);

    return _convertColor(
        colors,
        convertNumber(traceOpacity, count),
        count
    );
}

function _convertColor(colors, opacities, count) {
    var result = new Array(4 * count);

    for(var i = 0; i < count; ++i) {
        for(var j = 0; j < 3; ++j) result[4 * i + j] = colors[i][j];

        result[4 * i + 3] = colors[i][3] * opacities[i];
    }

    return result;
}

function isSymbolOpen(symbol) {
    return symbol.split('-open')[1] === '';
}

function fillColor(colorIn, colorOut, offsetIn, offsetOut, isDimmed) {
    var dim = isDimmed ? DESELECTDIM : 1;
    var j;

    for(j = 0; j < 3; j++) {
        colorIn[4 * offsetIn + j] = colorOut[4 * offsetOut + j];
    }
    colorIn[4 * offsetIn + j] = dim * colorOut[4 * offsetOut + j];
}

proto.update = function(options, cdscatter) {
    if(options.visible !== true) {
        this.isVisible = false;
        this.hasLines = false;
        this.hasErrorX = false;
        this.hasErrorY = false;
        this.hasMarkers = false;
    }
    else {
        this.isVisible = true;
        this.hasLines = subTypes.hasLines(options);
        this.hasErrorX = options.error_x.visible === true;
        this.hasErrorY = options.error_y.visible === true;
        this.hasMarkers = subTypes.hasMarkers(options);
    }

    this.textLabels = options.text;
    this.name = options.name;
    this.hoverinfo = options.hoverinfo;
    this.bounds = [Infinity, Infinity, -Infinity, -Infinity];
    this.connectgaps = !!options.connectgaps;

    if(!this.isVisible) {
        this.line.clear();
        this.errorX.clear();
        this.errorY.clear();
        this.scatter.clear();
        this.fancyScatter.clear();
    }
    else if(this.isFancy(options)) {
        this.updateFancy(options);
    }
    else {
        this.updateFast(options);
    }

    // sort objects so that order is preserve on updates:
    // - lines
    // - errorX
    // - errorY
    // - markers
    this.scene.glplot.objects.sort(function(a, b) {
        return a._index - b._index;
    });

    // set trace index so that scene2d can sort object per traces
    this.index = options.index;

    // not quite on-par with 'scatter', but close enough for now
    // does not handle the colorscale case
    this.color = getTraceColor(options, {});

    // provide reference for selecting points
    if(cdscatter && cdscatter[0] && !cdscatter[0]._glTrace) {
        cdscatter[0]._glTrace = this;
    }
};

// We'd ideally know that all values are of fast types; sampling gives no certainty but faster
//     (for the future, typed arrays can guarantee it, and Date values can be done with
//      representing the epoch milliseconds in a typed array;
//      also, perhaps the Python / R interfaces take care of String->Date conversions
//      such that there's no need to check for string dates in plotly.js)
// Patterned from axis_autotype.js:moreDates
// Code DRYing is not done to preserve the most direct compilation possible for speed;
// also, there are quite a few differences
function allFastTypesLikely(a) {
    var len = a.length,
        inc = Math.max(1, (len - 1) / Math.min(Math.max(len, 1), 1000)),
        ai;

    for(var i = 0; i < len; i += inc) {
        ai = a[Math.floor(i)];
        if(!isNumeric(ai) && !(ai instanceof Date)) {
            return false;
        }
    }

    return true;
}

proto.updateFast = function(options) {
    var x = this.xData = this.pickXData = options.x;
    var y = this.yData = this.pickYData = options.y;

    var len = x.length,
        idToIndex = new Array(len),
        positions = new Float64Array(2 * len),
        bounds = this.bounds,
        pId = 0,
        ptr = 0,
        selection = options.selection,
        i, selPositions, l;

    var xx, yy;

    var xcalendar = options.xcalendar;

    var fastType = allFastTypesLikely(x);
    var isDateTime = !fastType && autoType(x, xcalendar) === 'date';

    // TODO add 'very fast' mode that bypasses this loop
    // TODO bypass this on modebar +/- zoom
    if(fastType || isDateTime) {

        for(i = 0; i < len; ++i) {
            xx = x[i];
            yy = y[i];

            if(isNumeric(yy)) {

                if(!fastType) {
                    xx = Lib.dateTime2ms(xx, xcalendar);
                }

                positions[ptr++] = xx;
                positions[ptr++] = yy;

                idToIndex[pId++] = i;

                bounds[0] = Math.min(bounds[0], xx);
                bounds[1] = Math.min(bounds[1], yy);
                bounds[2] = Math.max(bounds[2], xx);
                bounds[3] = Math.max(bounds[3], yy);
            }
        }
    }

    positions = truncate(positions, ptr);
    this.idToIndex = idToIndex;

    // form selected set
    if(selection && selection.length) {
        selPositions = new Float64Array(2 * selection.length);

        for(i = 0, l = selection.length; i < l; i++) {
            selPositions[i * 2 + 0] = selection[i].x;
            selPositions[i * 2 + 1] = selection[i].y;
        }
    }

    this.updateLines(options, positions);
    this.updateError('X', options);
    this.updateError('Y', options);

    var markerSize;

    if(this.hasMarkers) {
        var markerColor, borderColor, opacity;

        // if we have selPositions array - means we have to render all points transparent, and selected points opaque
        if(selPositions) {
            this.scatter.options.positions = null;

            markerColor = str2RGBArray(options.marker.color);
            borderColor = str2RGBArray(options.marker.line.color);
            opacity = (options.opacity) * (options.marker.opacity) * DESELECTDIM;

            markerColor[3] *= opacity;
            this.scatter.options.color = markerColor;

            borderColor[3] *= opacity;
            this.scatter.options.borderColor = borderColor;

            markerSize = options.marker.size;
            this.scatter.options.size = markerSize;
            this.scatter.options.borderSize = options.marker.line.width;

            this.scatter.update();
            this.scatter.options.positions = positions;


            this.selectScatter.options.positions = selPositions;

            markerColor = str2RGBArray(options.marker.color);
            borderColor = str2RGBArray(options.marker.line.color);
            opacity = (options.opacity) * (options.marker.opacity);

            markerColor[3] *= opacity;
            this.selectScatter.options.color = markerColor;

            borderColor[3] *= opacity;
            this.selectScatter.options.borderColor = borderColor;

            markerSize = options.marker.size;
            this.selectScatter.options.size = markerSize;
            this.selectScatter.options.borderSize = options.marker.line.width;

            this.selectScatter.update();
        }

        else {
            this.scatter.options.positions = positions;

            markerColor = str2RGBArray(options.marker.color);
            borderColor = str2RGBArray(options.marker.line.color);
            opacity = (options.opacity) * (options.marker.opacity);
            markerColor[3] *= opacity;
            this.scatter.options.color = markerColor;

            borderColor[3] *= opacity;
            this.scatter.options.borderColor = borderColor;

            markerSize = options.marker.size;
            this.scatter.options.size = markerSize;
            this.scatter.options.borderSize = options.marker.line.width;

            this.scatter.update();
        }

    }
    else {
        this.scatter.clear();
    }

    // turn off fancy scatter plot
    this.fancyScatter.clear();

    // add item for autorange routine
    this.expandAxesFast(bounds, markerSize);
};

proto.updateFancy = function(options) {
    var scene = this.scene,
        xaxis = scene.xaxis,
        yaxis = scene.yaxis,
        bounds = this.bounds,
        selection = options.selection;

    // makeCalcdata runs d2c (data-to-coordinate) on every point
    var x = this.pickXData = xaxis.makeCalcdata(options, 'x').slice();
    var y = this.pickYData = yaxis.makeCalcdata(options, 'y').slice();

    this.xData = x.slice();
    this.yData = y.slice();

    // get error values
    var errorVals = ErrorBars.calcFromTrace(options, scene.fullLayout);

    var len = x.length,
        idToIndex = new Array(len),
        positions = new Float64Array(2 * len),
        errorsX = new Float64Array(4 * len),
        errorsY = new Float64Array(4 * len),
        pId = 0,
        ptr = 0,
        ptrX = 0,
        ptrY = 0;

    var getX = (xaxis.type === 'log') ? xaxis.d2l : function(x) { return x; };
    var getY = (yaxis.type === 'log') ? yaxis.d2l : function(y) { return y; };

    var i, xx, yy, ex0, ex1, ey0, ey1;

    for(i = 0; i < len; ++i) {
        this.xData[i] = xx = getX(x[i]);
        this.yData[i] = yy = getY(y[i]);

        if(isNaN(xx) || isNaN(yy)) continue;

        idToIndex[pId++] = i;

        positions[ptr++] = xx;
        positions[ptr++] = yy;

        ex0 = errorsX[ptrX++] = xx - errorVals[i].xs || 0;
        ex1 = errorsX[ptrX++] = errorVals[i].xh - xx || 0;
        errorsX[ptrX++] = 0;
        errorsX[ptrX++] = 0;

        errorsY[ptrY++] = 0;
        errorsY[ptrY++] = 0;
        ey0 = errorsY[ptrY++] = yy - errorVals[i].ys || 0;
        ey1 = errorsY[ptrY++] = errorVals[i].yh - yy || 0;

        bounds[0] = Math.min(bounds[0], xx - ex0);
        bounds[1] = Math.min(bounds[1], yy - ey0);
        bounds[2] = Math.max(bounds[2], xx + ex1);
        bounds[3] = Math.max(bounds[3], yy + ey1);
    }

    positions = truncate(positions, ptr);
    this.idToIndex = idToIndex;

    this.updateLines(options, positions);
    this.updateError('X', options, positions, errorsX);
    this.updateError('Y', options, positions, errorsY);

    var sizes, selIds;

    if(selection && selection.length) {
        selIds = {};
        for(i = 0; i < selection.length; i++) {
            selIds[selection[i].pointNumber] = true;
        }
    }

    if(this.hasMarkers) {
        this.scatter.options.positions = positions;

        // TODO rewrite convert function so that
        // we don't have to loop through the data another time

        this.scatter.options.sizes = new Array(pId);
        this.scatter.options.glyphs = new Array(pId);
        this.scatter.options.borderWidths = new Array(pId);
        this.scatter.options.colors = new Array(pId * 4);
        this.scatter.options.borderColors = new Array(pId * 4);

        var markerSizeFunc = makeBubbleSizeFn(options);
        var markerOpts = options.marker;
        var markerOpacity = markerOpts.opacity;
        var traceOpacity = options.opacity;
        var symbols = convertSymbol(markerOpts.symbol, len);
        var colors = convertColorScale(markerOpts, markerOpacity, traceOpacity, len);
        var borderWidths = convertNumber(markerOpts.line.width, len);
        var borderColors = convertColorScale(markerOpts.line, markerOpacity, traceOpacity, len);
        var index, size, symbol, symbolSpec, isOpen, isDimmed, _colors, _borderColors, bw, minBorderWidth;

        sizes = convertArray(markerSizeFunc, markerOpts.size, len);

        for(i = 0; i < pId; ++i) {
            index = idToIndex[i];

            symbol = symbols[index];
            symbolSpec = MARKER_SYMBOLS[symbol];
            isOpen = isSymbolOpen(symbol);
            isDimmed = selIds && !selIds[index];

            if(symbolSpec.noBorder && !isOpen) {
                _colors = borderColors;
            } else {
                _colors = colors;
            }

            if(isOpen) {
                _borderColors = colors;
            } else {
                _borderColors = borderColors;
            }

            // See  https://github.com/plotly/plotly.js/pull/1781#discussion_r121820798
            // for more info on this logic
            size = sizes[index];
            bw = borderWidths[index];
            minBorderWidth = (symbolSpec.noBorder || symbolSpec.noFill) ? 0.1 * size : 0;

            this.scatter.options.sizes[i] = 4.0 * size;
            this.scatter.options.glyphs[i] = symbolSpec.unicode;
            this.scatter.options.borderWidths[i] = 0.5 * ((bw > minBorderWidth) ? bw - minBorderWidth : 0);

            if(isOpen && !symbolSpec.noBorder && !symbolSpec.noFill) {
                fillColor(this.scatter.options.colors, TRANSPARENT, i, 0);
            } else {
                fillColor(this.scatter.options.colors, _colors, i, index, isDimmed);
            }
            fillColor(this.scatter.options.borderColors, _borderColors, i, index, isDimmed);
        }

        // prevent scatter from resnapping points
        if(selIds) {
            this.scatter.options.positions = null;
            this.fancyScatter.update();
            this.scatter.options.positions = positions;
        }
        else {
            this.fancyScatter.update();
        }
    }
    else {
        this.fancyScatter.clear();
    }

    // turn off fast scatter plot
    this.scatter.clear();

    // add item for autorange routine
    this.expandAxesFancy(x, y, sizes);
};

proto.updateLines = function(options, positions) {
    var i;

    if(this.hasLines) {
        var linePositions = positions;

        if(!options.connectgaps) {
            var p = 0;
            var x = this.xData;
            var y = this.yData;
            linePositions = new Float64Array(2 * x.length);

            for(i = 0; i < x.length; ++i) {
                linePositions[p++] = x[i];
                linePositions[p++] = y[i];
            }
        }

        this.line.options.positions = linePositions;

        var lineColor = convertColor(options.line.color, options.opacity, 1),
            lineWidth = Math.round(0.5 * this.line.options.width),
            dashes = (DASHES[options.line.dash] || [1]).slice();

        for(i = 0; i < dashes.length; ++i) dashes[i] *= lineWidth;

        switch(options.fill) {
            case 'tozeroy':
                this.line.options.fill = [false, true, false, false];
                break;
            case 'tozerox':
                this.line.options.fill = [true, false, false, false];
                break;
            default:
                this.line.options.fill = [false, false, false, false];
                break;
        }

        var fillColor = str2RGBArray(options.fillcolor);

        this.line.options.color = lineColor;
        this.line.options.width = 2.0 * options.line.width;
        this.line.options.dashes = dashes;
        this.line.options.fillColor = [fillColor, fillColor, fillColor, fillColor];

        this.line.update();
    }
    else {
        this.line.clear();
    }
};

proto.updateError = function(axLetter, options, positions, errors) {
    var errorObj = this['error' + axLetter],
        errorOptions = options['error_' + axLetter.toLowerCase()];

    if(axLetter.toLowerCase() === 'x' && errorOptions.copy_ystyle) {
        errorOptions = options.error_y;
    }

    if(this['hasError' + axLetter]) {
        errorObj.options.positions = positions;
        errorObj.options.errors = errors;
        errorObj.options.capSize = errorOptions.width;
        errorObj.options.lineWidth = errorOptions.thickness / 2;  // ballpark rescaling
        errorObj.options.color = convertColor(errorOptions.color, 1, 1);

        errorObj.update();
    }
    else {
        errorObj.clear();
    }
};

proto.expandAxesFast = function(bounds, markerSize) {
    var pad = markerSize || 10;
    var ax, min, max;

    for(var i = 0; i < 2; i++) {
        ax = this.scene[AXES[i]];

        min = ax._min;
        if(!min) min = [];
        min.push({ val: bounds[i], pad: pad });

        max = ax._max;
        if(!max) max = [];
        max.push({ val: bounds[i + 2], pad: pad });
    }
};

// not quite on-par with 'scatter' (scatter fill in several other expand options)
// but close enough for now
proto.expandAxesFancy = function(x, y, ppad) {
    var scene = this.scene,
        expandOpts = { padded: true, ppad: ppad };

    Axes.expand(scene.xaxis, x, expandOpts);
    Axes.expand(scene.yaxis, y, expandOpts);
};

proto.dispose = function() {
    this.line.dispose();
    this.errorX.dispose();
    this.errorY.dispose();
    this.scatter.dispose();
    this.fancyScatter.dispose();
};

function createLineWithMarkers(scene, data, cdscatter) {
    var plot = new LineWithMarkers(scene, data.uid);
    plot.update(data, cdscatter);

    return plot;
}

module.exports = createLineWithMarkers;

},{"../../components/errorbars":263,"../../constants/gl2d_dashes":331,"../../constants/gl2d_markers":332,"../../constants/interactions":333,"../../lib":353,"../../lib/gl_format_color":349,"../../lib/str2rgbarray":374,"../../lib/typed_array_truncate":378,"../../plots/cartesian/axes":396,"../../plots/cartesian/axis_autotype":397,"../scatter/get_trace_color":500,"../scatter/make_bubble_size_func":507,"../scatter/subtypes":512,"fast-isnumeric":68,"gl-error2d":79,"gl-line2d":87,"gl-scatter2d":128,"gl-scatter2d-sdf":123}],519:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var constants = require('../scatter/constants');
var subTypes = require('../scatter/subtypes');
var handleXYDefaults = require('../scatter/xy_defaults');
var handleMarkerDefaults = require('../scatter/marker_defaults');
var handleLineDefaults = require('../scatter/line_defaults');
var handleFillColorDefaults = require('../scatter/fillcolor_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');

var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYDefaults(traceIn, traceOut, layout, coerce);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('mode', len < constants.PTS_LINESONLY ? 'lines+markers' : 'lines');

    if(subTypes.hasLines(traceOut)) {
        coerce('connectgaps');
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
    }

    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'y'});
    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
};

},{"../../components/errorbars/defaults":262,"../../lib":353,"../scatter/constants":496,"../scatter/fillcolor_defaults":499,"../scatter/line_defaults":503,"../scatter/marker_defaults":508,"../scatter/subtypes":512,"../scatter/xy_defaults":514,"./attributes":516}],520:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var ScatterGl = {};

ScatterGl.attributes = require('./attributes');
ScatterGl.supplyDefaults = require('./defaults');
ScatterGl.colorbar = require('../scatter/colorbar');
ScatterGl.hoverPoints = require('../scatter/hover');

// reuse the Scatter3D 'dummy' calc step so that legends know what to do
ScatterGl.calc = require('./calc');
ScatterGl.plot = require('./convert');
ScatterGl.selectPoints = require('./select');

ScatterGl.moduleType = 'trace';
ScatterGl.name = 'scattergl';
ScatterGl.basePlotModule = require('../../plots/gl2d');
ScatterGl.categories = ['gl2d', 'symbols', 'errorBarsOK', 'markerColorscale', 'showLegend', 'scatter-like'];
ScatterGl.meta = {
    
};

module.exports = ScatterGl;

},{"../../plots/gl2d":424,"../scatter/colorbar":494,"../scatter/hover":501,"./attributes":516,"./calc":517,"./convert":518,"./defaults":519,"./select":521}],521:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var subtypes = require('../scatter/subtypes');

module.exports = function selectPoints(searchInfo, polygon) {
    var cd = searchInfo.cd,
        xa = searchInfo.xaxis,
        ya = searchInfo.yaxis,
        selection = [],
        trace = cd[0].trace,
        i,
        di,
        x,
        y;

    var glTrace = cd[0]._glTrace;
    var scene = glTrace.scene;

    var hasOnlyLines = (!subtypes.hasMarkers(trace) && !subtypes.hasText(trace));
    if(hasOnlyLines) return [];

    // filter out points by visible scatter ones
    if(polygon === false) {
        // clear selection
        for(i = 0; i < cd.length; i++) cd[i].dim = 0;
    }
    else {
        for(i = 0; i < cd.length; i++) {
            di = cd[i];
            x = xa.c2p(di.x);
            y = ya.c2p(di.y);
            if(polygon.contains([x, y])) {
                selection.push({
                    pointNumber: i,
                    x: di.x,
                    y: di.y
                });
                di.dim = 0;
            }
            else di.dim = 1;
        }
    }

    // highlight selected points here
    trace.selection = selection;

    glTrace.update(trace, cd);
    scene.glplot.setDirty();

    return selection;
};

},{"../scatter/subtypes":512}]},{},[6])(6)
});