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georaster-layer-for-leaflet.browserify.min.js
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georaster-layer-for-leaflet.browserify.min.js
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(function(){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}return e})()({1:[function(require,module,exports){
let chroma = require("chroma-js");
let L = window.L;
var GeoRasterLayer = L.GridLayer.extend({
initialize: function(options) {
try {
// console.log("starting GeoRasterLayer.initialize with", options);
if (!options.keepBuffer) options.keepBuffer = 25;
if (!options.resolution) options.resolution = Math.pow(2, 5);
if (options.updateWhenZooming === undefined) options.updateWhenZooming = false;
let georaster = options.georaster;
this.georaster = georaster;
this.scale = chroma.scale();
/*
Unpacking values for use later.
We do this in order to increase speed.
*/
this._maxs = georaster.maxs;
this._mins = georaster.mins;
this._ranges = georaster.ranges;
this._no_data_value = georaster.noDataValue;
this._pixelWidth = georaster.pixelWidth;
this._pixelHeight = georaster.pixelHeight;
this._rasters = georaster.values;
this._tiff_width = georaster.width;
this._xmin = georaster.xmin;
this._ymin = georaster.ymin;
this._xmax = georaster.xmax;
this._ymax = georaster.ymax;
// console.log("georaster.ymin:", georaster.ymin);
let southWest = L.latLng(georaster.ymin, georaster.xmin);
let northEast = L.latLng(georaster.ymax, georaster.xmax);
this._bounds = L.latLngBounds(southWest, northEast);
// console.log("this._bounds:", this._bounds);
options.bounds = this._bounds;
L.setOptions(this, options);
/*
Caching the constant tile size, so we don't recalculate everytime we
create a new tile
*/
let tileSize = this.getTileSize();
this._tile_height = tileSize.y;
this._tile_width = tileSize.x;
} catch (error) {
console.error("ERROR initializing GeoTIFFLayer", error);
}
},
createTile: function(coords) {
let debug_level = 0;
if (debug_level >= 1) {
var start_time = performance.now();
var duration_reading_rasters = 0;
var time_started_reading_rasters;
var time_started_filling_rect;
var duration_filling_rects = 0;
}
/*
Unpacking values for use later.
We do this in order to increase speed.
*/
let maxs = this._maxs;
let mins = this._mins;
let ranges = this._ranges;
let no_data_value = this._no_data_value;
let pixelWidth = this._pixelWidth;
let pixelHeight = this._pixelHeight;
let rasters = this._rasters;
let scale = this.scale;
let tiff_width = this._tiff_width;
let xmin = this._xmin;
let ymin = this._ymin;
let xmax = this._xmax;
let ymax = this._ymax;
//if (debug_level >= 1) console.group();
//if (debug_level >= 1) console.log("starting createTile with coords:", coords);
// create a <canvas> element for drawing
let tile = L.DomUtil.create('canvas', 'leaflet-tile');
tile.height = this._tile_height;
tile.width = this._tile_width;
// get a canvas context and draw something on it using coords.x, coords.y and coords.z
let context = tile.getContext('2d');
let bounds = this._tileCoordsToBounds(coords);
//if (debug_level >= 1) console.log("bounds:", bounds);
let xmin_of_tile = bounds.getWest();
let xmax_of_tile = bounds.getEast();
let ymin_of_tile = bounds.getSouth();
let ymax_of_tile = bounds.getNorth();
//if (debug_level >= 1) console.log("ymax_of_tile:", ymax_of_tile);
let resolution = this.options.resolution;
let raster_pixels_across = Math.ceil((xmax_of_tile - xmin_of_tile) / pixelWidth);
let raster_pixels_down = Math.ceil((ymax_of_tile - ymin_of_tile) / pixelHeight);
let number_of_rectangles_across = Math.min(resolution, raster_pixels_across);
let number_of_rectangles_down = Math.min(resolution, raster_pixels_down);
let height_of_rectangle_in_pixels = this._tile_height / number_of_rectangles_down;
let height_of_rectangle_in_pixels_int = Math.ceil(height_of_rectangle_in_pixels);
//if (debug_level >= 1) console.log("height_of_rectangle_in_pixels:", height_of_rectangle_in_pixels);
let width_of_rectangle_in_pixels = this._tile_width / number_of_rectangles_across;
let width_of_rectangle_in_pixels_int = Math.ceil(width_of_rectangle_in_pixels);
//if (debug_level >= 1) console.log("width_of_rectangle:", width_of_rectangle_in_pixels);
let height_of_rectangle_in_degrees = ( ymax_of_tile - ymin_of_tile ) / number_of_rectangles_down;
//if (debug_level >= 1) console.log("height_of_rectangle_in_degrees:", height_of_rectangle_in_degrees);
let width_of_rectangle_in_degrees = ( xmax_of_tile - xmin_of_tile ) / number_of_rectangles_across;
//if (debug_level >= 1) console.log("width_of_rectangle_in_degrees:", width_of_rectangle_in_degrees);
//if (debug_level >= 1) console.log("ymax of raster:", ymax);
let number_of_pixels_per_rectangle = this._tile_width / 8;
let map = this._map;
let tileSize = this.getTileSize();
let tileNwPoint = coords.scaleBy(tileSize);
for (let h = 0; h < number_of_rectangles_down; h++) {
let y_center_in_map_pixels = tileNwPoint.y + (h + 0.5) * height_of_rectangle_in_pixels;
let latWestPoint = L.point(tileNwPoint.x, y_center_in_map_pixels);
let latWest = map.unproject(latWestPoint, coords.z);
let lat = latWest.lat;
//if (debug_level >= 2) console.log("lat:", lat);
if (lat > ymin && lat < ymax) {
let y_in_tile_pixels = Math.round(h * height_of_rectangle_in_pixels);
let y_in_raster_pixels = Math.floor( (ymax - lat) / pixelHeight );
for (let w = 0; w < number_of_rectangles_across; w++) {
let latLngPoint = L.point(tileNwPoint.x + (w + 0.5) * width_of_rectangle_in_pixels, y_center_in_map_pixels);
let latLng = map.unproject(latLngPoint, coords.z);
let lng = latLng.lng;
//if (debug_level >= 2) console.log("lng:", lng);
if (lng > xmin && lng < xmax) {
//if (debug_level >= 2) L.circleMarker([lat, lng], {color: "#00FF00"}).bindTooltip(h+","+w).addTo(this._map).openTooltip();
let x_in_raster_pixels = Math.floor( (lng - xmin) / pixelWidth );
if (debug_level >= 1) time_started_reading_rasters = performance.now();
let values = rasters.map(raster => raster[y_in_raster_pixels][x_in_raster_pixels]);
if (debug_level >= 1) duration_reading_rasters += performance.now() - time_started_reading_rasters;
let color = null;
if(this.options.pixelValueToColorFn) {
color = this.options.pixelValueToColorFn(values[0]);
} else {
let number_of_values = values.length;
if (number_of_values == 1) {
let value = values[0];
if (value != no_data_value) {
color = scale( (values[0] - mins[0]) / ranges[0] ).hex();
}
} else if (number_of_values == 2) {
} else if (number_of_values == 3) {
if (values[0] != no_data_value) {
color = "rgb(" + values[0] + "," + values[1] + "," + values[2] + ")";
}
}
}
//let colors = ["red", "green", "blue", "pink", "purple", "orange"];
//let color = colors[Math.round(colors.length * Math.random())];
//context.fillStyle = this.getColor(color);
if (color) {
context.fillStyle = color;
if (debug_level >= 1) time_started_filling_rect = performance.now();
context.fillRect(Math.round(w * width_of_rectangle_in_pixels), y_in_tile_pixels, width_of_rectangle_in_pixels_int, height_of_rectangle_in_pixels_int);
if (debug_level >= 1) duration_filling_rects += performance.now() - time_started_filling_rect;
}
//if (debug_level >= 2) console.log("filling:", [w * width_of_rectangle_in_pixels, rect_y_in_pixels, width_of_rectangle_in_pixels_int, height_of_rectangle_in_pixels_int]);
//if (debug_level >= 2) console.log("with color:", color);
//if (debug_level >= 2) console.log("with context:", context);
} else {
//if (debug_level >= 2) L.circleMarker([lat, lng], {color: "#FF0000"}).bindTooltip(h+","+w).addTo(this._map).openTooltip();
}
}
}
}
if (debug_level >= 1) {
let duration = performance.now() - start_time;
console.log("creating tile took ", duration, "milliseconds");
console.log("took", duration_reading_rasters, "milliseconds to read rasters, which is ", Math.round(duration_reading_rasters / duration * 100), "percentage of the total time");
console.log("took", duration_filling_rects, "milliseconds to fill rects, which is ", Math.round(duration_filling_rects / duration * 100), "percentage of the total time");
}
//if (debug_level >= 1) console.groupEnd();
// return the tile so it can be rendered on screen
return tile;
},
// method from https://github.com/Leaflet/Leaflet/blob/bb1d94ac7f2716852213dd11563d89855f8d6bb1/src/layer/ImageOverlay.js
getBounds: function () {
return this._bounds;
},
getColor(name) {
let d = document.createElement("div");
d.style.color = name;
document.body.appendChild(d)
return window.getComputedStyle(d).color
}
});
if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
module.exports = GeoRasterLayer;
}
if (typeof window !== "undefined") {
window["GeoRasterLayer"] = GeoRasterLayer;
} else if (typeof self !== "undefined") {
self["GeoRasterLayer"] = GeoRasterLayer; // jshint ignore:line
}
},{"chroma-js":2}],2:[function(require,module,exports){
/**
* @license
*
* chroma.js - JavaScript library for color conversions
*
* Copyright (c) 2011-2017, Gregor Aisch
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name Gregor Aisch may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL GREGOR AISCH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
(function() {
var Color, DEG2RAD, LAB_CONSTANTS, PI, PITHIRD, RAD2DEG, TWOPI, _average_lrgb, _guess_formats, _guess_formats_sorted, _input, _interpolators, abs, atan2, bezier, blend, blend_f, brewer, burn, chroma, clip_rgb, cmyk2rgb, colors, cos, css2rgb, darken, dodge, each, floor, hcg2rgb, hex2rgb, hsi2rgb, hsl2css, hsl2rgb, hsv2rgb, interpolate, interpolate_hsx, interpolate_lab, interpolate_lrgb, interpolate_num, interpolate_rgb, lab2lch, lab2rgb, lab_xyz, lch2lab, lch2rgb, lighten, limit, log, luminance_x, m, max, multiply, normal, num2rgb, overlay, pow, rgb2cmyk, rgb2css, rgb2hcg, rgb2hex, rgb2hsi, rgb2hsl, rgb2hsv, rgb2lab, rgb2lch, rgb2luminance, rgb2num, rgb2temperature, rgb2xyz, rgb_xyz, rnd, root, round, screen, sin, sqrt, temperature2rgb, type, unpack, w3cx11, xyz_lab, xyz_rgb,
slice = [].slice;
type = (function() {
/*
for browser-safe type checking+
ported from jQuery's $.type
*/
var classToType, len, name, o, ref;
classToType = {};
ref = "Boolean Number String Function Array Date RegExp Undefined Null".split(" ");
for (o = 0, len = ref.length; o < len; o++) {
name = ref[o];
classToType["[object " + name + "]"] = name.toLowerCase();
}
return function(obj) {
var strType;
strType = Object.prototype.toString.call(obj);
return classToType[strType] || "object";
};
})();
limit = function(x, min, max) {
if (min == null) {
min = 0;
}
if (max == null) {
max = 1;
}
if (x < min) {
x = min;
}
if (x > max) {
x = max;
}
return x;
};
unpack = function(args) {
if (args.length >= 3) {
return Array.prototype.slice.call(args);
} else {
return args[0];
}
};
clip_rgb = function(rgb) {
var i, o;
rgb._clipped = false;
rgb._unclipped = rgb.slice(0);
for (i = o = 0; o < 3; i = ++o) {
if (i < 3) {
if (rgb[i] < 0 || rgb[i] > 255) {
rgb._clipped = true;
}
if (rgb[i] < 0) {
rgb[i] = 0;
}
if (rgb[i] > 255) {
rgb[i] = 255;
}
} else if (i === 3) {
if (rgb[i] < 0) {
rgb[i] = 0;
}
if (rgb[i] > 1) {
rgb[i] = 1;
}
}
}
if (!rgb._clipped) {
delete rgb._unclipped;
}
return rgb;
};
PI = Math.PI, round = Math.round, cos = Math.cos, floor = Math.floor, pow = Math.pow, log = Math.log, sin = Math.sin, sqrt = Math.sqrt, atan2 = Math.atan2, max = Math.max, abs = Math.abs;
TWOPI = PI * 2;
PITHIRD = PI / 3;
DEG2RAD = PI / 180;
RAD2DEG = 180 / PI;
chroma = function() {
if (arguments[0] instanceof Color) {
return arguments[0];
}
return (function(func, args, ctor) {
ctor.prototype = func.prototype;
var child = new ctor, result = func.apply(child, args);
return Object(result) === result ? result : child;
})(Color, arguments, function(){});
};
chroma["default"] = chroma;
_interpolators = [];
if ((typeof module !== "undefined" && module !== null) && (module.exports != null)) {
module.exports = chroma;
}
if (typeof define === 'function' && define.amd) {
define([], function() {
return chroma;
});
} else {
root = typeof exports !== "undefined" && exports !== null ? exports : this;
root.chroma = chroma;
}
chroma.version = '1.4.0';
_input = {};
_guess_formats = [];
_guess_formats_sorted = false;
Color = (function() {
function Color() {
var arg, args, chk, len, len1, me, mode, o, w;
me = this;
args = [];
for (o = 0, len = arguments.length; o < len; o++) {
arg = arguments[o];
if (arg != null) {
args.push(arg);
}
}
if (args.length > 1) {
mode = args[args.length - 1];
}
if (_input[mode] != null) {
me._rgb = clip_rgb(_input[mode](unpack(args.slice(0, -1))));
} else {
if (!_guess_formats_sorted) {
_guess_formats = _guess_formats.sort(function(a, b) {
return b.p - a.p;
});
_guess_formats_sorted = true;
}
for (w = 0, len1 = _guess_formats.length; w < len1; w++) {
chk = _guess_formats[w];
mode = chk.test.apply(chk, args);
if (mode) {
break;
}
}
if (mode) {
me._rgb = clip_rgb(_input[mode].apply(_input, args));
}
}
if (me._rgb == null) {
console.warn('unknown format: ' + args);
}
if (me._rgb == null) {
me._rgb = [0, 0, 0];
}
if (me._rgb.length === 3) {
me._rgb.push(1);
}
}
Color.prototype.toString = function() {
return this.hex();
};
return Color;
})();
chroma._input = _input;
/**
ColorBrewer colors for chroma.js
Copyright (c) 2002 Cynthia Brewer, Mark Harrower, and The
Pennsylvania State University.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
@preserve
*/
chroma.brewer = brewer = {
OrRd: ['#fff7ec', '#fee8c8', '#fdd49e', '#fdbb84', '#fc8d59', '#ef6548', '#d7301f', '#b30000', '#7f0000'],
PuBu: ['#fff7fb', '#ece7f2', '#d0d1e6', '#a6bddb', '#74a9cf', '#3690c0', '#0570b0', '#045a8d', '#023858'],
BuPu: ['#f7fcfd', '#e0ecf4', '#bfd3e6', '#9ebcda', '#8c96c6', '#8c6bb1', '#88419d', '#810f7c', '#4d004b'],
Oranges: ['#fff5eb', '#fee6ce', '#fdd0a2', '#fdae6b', '#fd8d3c', '#f16913', '#d94801', '#a63603', '#7f2704'],
BuGn: ['#f7fcfd', '#e5f5f9', '#ccece6', '#99d8c9', '#66c2a4', '#41ae76', '#238b45', '#006d2c', '#00441b'],
YlOrBr: ['#ffffe5', '#fff7bc', '#fee391', '#fec44f', '#fe9929', '#ec7014', '#cc4c02', '#993404', '#662506'],
YlGn: ['#ffffe5', '#f7fcb9', '#d9f0a3', '#addd8e', '#78c679', '#41ab5d', '#238443', '#006837', '#004529'],
Reds: ['#fff5f0', '#fee0d2', '#fcbba1', '#fc9272', '#fb6a4a', '#ef3b2c', '#cb181d', '#a50f15', '#67000d'],
RdPu: ['#fff7f3', '#fde0dd', '#fcc5c0', '#fa9fb5', '#f768a1', '#dd3497', '#ae017e', '#7a0177', '#49006a'],
Greens: ['#f7fcf5', '#e5f5e0', '#c7e9c0', '#a1d99b', '#74c476', '#41ab5d', '#238b45', '#006d2c', '#00441b'],
YlGnBu: ['#ffffd9', '#edf8b1', '#c7e9b4', '#7fcdbb', '#41b6c4', '#1d91c0', '#225ea8', '#253494', '#081d58'],
Purples: ['#fcfbfd', '#efedf5', '#dadaeb', '#bcbddc', '#9e9ac8', '#807dba', '#6a51a3', '#54278f', '#3f007d'],
GnBu: ['#f7fcf0', '#e0f3db', '#ccebc5', '#a8ddb5', '#7bccc4', '#4eb3d3', '#2b8cbe', '#0868ac', '#084081'],
Greys: ['#ffffff', '#f0f0f0', '#d9d9d9', '#bdbdbd', '#969696', '#737373', '#525252', '#252525', '#000000'],
YlOrRd: ['#ffffcc', '#ffeda0', '#fed976', '#feb24c', '#fd8d3c', '#fc4e2a', '#e31a1c', '#bd0026', '#800026'],
PuRd: ['#f7f4f9', '#e7e1ef', '#d4b9da', '#c994c7', '#df65b0', '#e7298a', '#ce1256', '#980043', '#67001f'],
Blues: ['#f7fbff', '#deebf7', '#c6dbef', '#9ecae1', '#6baed6', '#4292c6', '#2171b5', '#08519c', '#08306b'],
PuBuGn: ['#fff7fb', '#ece2f0', '#d0d1e6', '#a6bddb', '#67a9cf', '#3690c0', '#02818a', '#016c59', '#014636'],
Viridis: ['#440154', '#482777', '#3f4a8a', '#31678e', '#26838f', '#1f9d8a', '#6cce5a', '#b6de2b', '#fee825'],
Spectral: ['#9e0142', '#d53e4f', '#f46d43', '#fdae61', '#fee08b', '#ffffbf', '#e6f598', '#abdda4', '#66c2a5', '#3288bd', '#5e4fa2'],
RdYlGn: ['#a50026', '#d73027', '#f46d43', '#fdae61', '#fee08b', '#ffffbf', '#d9ef8b', '#a6d96a', '#66bd63', '#1a9850', '#006837'],
RdBu: ['#67001f', '#b2182b', '#d6604d', '#f4a582', '#fddbc7', '#f7f7f7', '#d1e5f0', '#92c5de', '#4393c3', '#2166ac', '#053061'],
PiYG: ['#8e0152', '#c51b7d', '#de77ae', '#f1b6da', '#fde0ef', '#f7f7f7', '#e6f5d0', '#b8e186', '#7fbc41', '#4d9221', '#276419'],
PRGn: ['#40004b', '#762a83', '#9970ab', '#c2a5cf', '#e7d4e8', '#f7f7f7', '#d9f0d3', '#a6dba0', '#5aae61', '#1b7837', '#00441b'],
RdYlBu: ['#a50026', '#d73027', '#f46d43', '#fdae61', '#fee090', '#ffffbf', '#e0f3f8', '#abd9e9', '#74add1', '#4575b4', '#313695'],
BrBG: ['#543005', '#8c510a', '#bf812d', '#dfc27d', '#f6e8c3', '#f5f5f5', '#c7eae5', '#80cdc1', '#35978f', '#01665e', '#003c30'],
RdGy: ['#67001f', '#b2182b', '#d6604d', '#f4a582', '#fddbc7', '#ffffff', '#e0e0e0', '#bababa', '#878787', '#4d4d4d', '#1a1a1a'],
PuOr: ['#7f3b08', '#b35806', '#e08214', '#fdb863', '#fee0b6', '#f7f7f7', '#d8daeb', '#b2abd2', '#8073ac', '#542788', '#2d004b'],
Set2: ['#66c2a5', '#fc8d62', '#8da0cb', '#e78ac3', '#a6d854', '#ffd92f', '#e5c494', '#b3b3b3'],
Accent: ['#7fc97f', '#beaed4', '#fdc086', '#ffff99', '#386cb0', '#f0027f', '#bf5b17', '#666666'],
Set1: ['#e41a1c', '#377eb8', '#4daf4a', '#984ea3', '#ff7f00', '#ffff33', '#a65628', '#f781bf', '#999999'],
Set3: ['#8dd3c7', '#ffffb3', '#bebada', '#fb8072', '#80b1d3', '#fdb462', '#b3de69', '#fccde5', '#d9d9d9', '#bc80bd', '#ccebc5', '#ffed6f'],
Dark2: ['#1b9e77', '#d95f02', '#7570b3', '#e7298a', '#66a61e', '#e6ab02', '#a6761d', '#666666'],
Paired: ['#a6cee3', '#1f78b4', '#b2df8a', '#33a02c', '#fb9a99', '#e31a1c', '#fdbf6f', '#ff7f00', '#cab2d6', '#6a3d9a', '#ffff99', '#b15928'],
Pastel2: ['#b3e2cd', '#fdcdac', '#cbd5e8', '#f4cae4', '#e6f5c9', '#fff2ae', '#f1e2cc', '#cccccc'],
Pastel1: ['#fbb4ae', '#b3cde3', '#ccebc5', '#decbe4', '#fed9a6', '#ffffcc', '#e5d8bd', '#fddaec', '#f2f2f2']
};
(function() {
var key, results;
results = [];
for (key in brewer) {
results.push(brewer[key.toLowerCase()] = brewer[key]);
}
return results;
})();
/**
X11 color names
http://www.w3.org/TR/css3-color/#svg-color
*/
w3cx11 = {
aliceblue: '#f0f8ff',
antiquewhite: '#faebd7',
aqua: '#00ffff',
aquamarine: '#7fffd4',
azure: '#f0ffff',
beige: '#f5f5dc',
bisque: '#ffe4c4',
black: '#000000',
blanchedalmond: '#ffebcd',
blue: '#0000ff',
blueviolet: '#8a2be2',
brown: '#a52a2a',
burlywood: '#deb887',
cadetblue: '#5f9ea0',
chartreuse: '#7fff00',
chocolate: '#d2691e',
coral: '#ff7f50',
cornflower: '#6495ed',
cornflowerblue: '#6495ed',
cornsilk: '#fff8dc',
crimson: '#dc143c',
cyan: '#00ffff',
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: '#ff00ff',
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',
laserlemon: '#ffff54',
lavender: '#e6e6fa',
lavenderblush: '#fff0f5',
lawngreen: '#7cfc00',
lemonchiffon: '#fffacd',
lightblue: '#add8e6',
lightcoral: '#f08080',
lightcyan: '#e0ffff',
lightgoldenrod: '#fafad2',
lightgoldenrodyellow: '#fafad2',
lightgray: '#d3d3d3',
lightgreen: '#90ee90',
lightgrey: '#d3d3d3',
lightpink: '#ffb6c1',
lightsalmon: '#ffa07a',
lightseagreen: '#20b2aa',
lightskyblue: '#87cefa',
lightslategray: '#778899',
lightslategrey: '#778899',
lightsteelblue: '#b0c4de',
lightyellow: '#ffffe0',
lime: '#00ff00',
limegreen: '#32cd32',
linen: '#faf0e6',
magenta: '#ff00ff',
maroon: '#800000',
maroon2: '#7f0000',
maroon3: '#b03060',
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',
purple2: '#7f007f',
purple3: '#a020f0',
rebeccapurple: '#663399',
red: '#ff0000',
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: '#ffffff',
whitesmoke: '#f5f5f5',
yellow: '#ffff00',
yellowgreen: '#9acd32'
};
chroma.colors = colors = w3cx11;
lab2rgb = function() {
var a, args, b, g, l, r, x, y, z;
args = unpack(arguments);
l = args[0], a = args[1], b = args[2];
y = (l + 16) / 116;
x = isNaN(a) ? y : y + a / 500;
z = isNaN(b) ? y : y - b / 200;
y = LAB_CONSTANTS.Yn * lab_xyz(y);
x = LAB_CONSTANTS.Xn * lab_xyz(x);
z = LAB_CONSTANTS.Zn * lab_xyz(z);
r = xyz_rgb(3.2404542 * x - 1.5371385 * y - 0.4985314 * z);
g = xyz_rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z);
b = xyz_rgb(0.0556434 * x - 0.2040259 * y + 1.0572252 * z);
return [r, g, b, args.length > 3 ? args[3] : 1];
};
xyz_rgb = function(r) {
return 255 * (r <= 0.00304 ? 12.92 * r : 1.055 * pow(r, 1 / 2.4) - 0.055);
};
lab_xyz = function(t) {
if (t > LAB_CONSTANTS.t1) {
return t * t * t;
} else {
return LAB_CONSTANTS.t2 * (t - LAB_CONSTANTS.t0);
}
};
LAB_CONSTANTS = {
Kn: 18,
Xn: 0.950470,
Yn: 1,
Zn: 1.088830,
t0: 0.137931034,
t1: 0.206896552,
t2: 0.12841855,
t3: 0.008856452
};
rgb2lab = function() {
var b, g, r, ref, ref1, x, y, z;
ref = unpack(arguments), r = ref[0], g = ref[1], b = ref[2];
ref1 = rgb2xyz(r, g, b), x = ref1[0], y = ref1[1], z = ref1[2];
return [116 * y - 16, 500 * (x - y), 200 * (y - z)];
};
rgb_xyz = function(r) {
if ((r /= 255) <= 0.04045) {
return r / 12.92;
} else {
return pow((r + 0.055) / 1.055, 2.4);
}
};
xyz_lab = function(t) {
if (t > LAB_CONSTANTS.t3) {
return pow(t, 1 / 3);
} else {
return t / LAB_CONSTANTS.t2 + LAB_CONSTANTS.t0;
}
};
rgb2xyz = function() {
var b, g, r, ref, x, y, z;
ref = unpack(arguments), r = ref[0], g = ref[1], b = ref[2];
r = rgb_xyz(r);
g = rgb_xyz(g);
b = rgb_xyz(b);
x = xyz_lab((0.4124564 * r + 0.3575761 * g + 0.1804375 * b) / LAB_CONSTANTS.Xn);
y = xyz_lab((0.2126729 * r + 0.7151522 * g + 0.0721750 * b) / LAB_CONSTANTS.Yn);
z = xyz_lab((0.0193339 * r + 0.1191920 * g + 0.9503041 * b) / LAB_CONSTANTS.Zn);
return [x, y, z];
};
chroma.lab = function() {
return (function(func, args, ctor) {
ctor.prototype = func.prototype;
var child = new ctor, result = func.apply(child, args);
return Object(result) === result ? result : child;
})(Color, slice.call(arguments).concat(['lab']), function(){});
};
_input.lab = lab2rgb;
Color.prototype.lab = function() {
return rgb2lab(this._rgb);
};
bezier = function(colors) {
var I, I0, I1, c, lab0, lab1, lab2, lab3, ref, ref1, ref2;
colors = (function() {
var len, o, results;
results = [];
for (o = 0, len = colors.length; o < len; o++) {
c = colors[o];
results.push(chroma(c));
}
return results;
})();
if (colors.length === 2) {
ref = (function() {
var len, o, results;
results = [];
for (o = 0, len = colors.length; o < len; o++) {
c = colors[o];
results.push(c.lab());
}
return results;
})(), lab0 = ref[0], lab1 = ref[1];
I = function(t) {
var i, lab;
lab = (function() {
var o, results;
results = [];
for (i = o = 0; o <= 2; i = ++o) {
results.push(lab0[i] + t * (lab1[i] - lab0[i]));
}
return results;
})();
return chroma.lab.apply(chroma, lab);
};
} else if (colors.length === 3) {
ref1 = (function() {
var len, o, results;
results = [];
for (o = 0, len = colors.length; o < len; o++) {
c = colors[o];
results.push(c.lab());
}
return results;
})(), lab0 = ref1[0], lab1 = ref1[1], lab2 = ref1[2];
I = function(t) {
var i, lab;
lab = (function() {
var o, results;
results = [];
for (i = o = 0; o <= 2; i = ++o) {
results.push((1 - t) * (1 - t) * lab0[i] + 2 * (1 - t) * t * lab1[i] + t * t * lab2[i]);
}
return results;
})();
return chroma.lab.apply(chroma, lab);
};
} else if (colors.length === 4) {
ref2 = (function() {
var len, o, results;
results = [];
for (o = 0, len = colors.length; o < len; o++) {
c = colors[o];
results.push(c.lab());
}
return results;
})(), lab0 = ref2[0], lab1 = ref2[1], lab2 = ref2[2], lab3 = ref2[3];
I = function(t) {
var i, lab;
lab = (function() {
var o, results;
results = [];
for (i = o = 0; o <= 2; i = ++o) {
results.push((1 - t) * (1 - t) * (1 - t) * lab0[i] + 3 * (1 - t) * (1 - t) * t * lab1[i] + 3 * (1 - t) * t * t * lab2[i] + t * t * t * lab3[i]);
}
return results;
})();
return chroma.lab.apply(chroma, lab);
};
} else if (colors.length === 5) {
I0 = bezier(colors.slice(0, 3));
I1 = bezier(colors.slice(2, 5));
I = function(t) {
if (t < 0.5) {
return I0(t * 2);
} else {
return I1((t - 0.5) * 2);
}
};
}
return I;
};
chroma.bezier = function(colors) {
var f;
f = bezier(colors);
f.scale = function() {
return chroma.scale(f);
};
return f;
};
chroma.cubehelix = function(start, rotations, hue, gamma, lightness) {
var dh, dl, f;
if (start == null) {
start = 300;
}
if (rotations == null) {
rotations = -1.5;
}
if (hue == null) {
hue = 1;
}
if (gamma == null) {
gamma = 1;
}
if (lightness == null) {
lightness = [0, 1];
}
dh = 0;
if (type(lightness) === 'array') {
dl = lightness[1] - lightness[0];
} else {
dl = 0;
lightness = [lightness, lightness];
}
f = function(fract) {
var a, amp, b, cos_a, g, h, l, r, sin_a;
a = TWOPI * ((start + 120) / 360 + rotations * fract);
l = pow(lightness[0] + dl * fract, gamma);
h = dh !== 0 ? hue[0] + fract * dh : hue;
amp = h * l * (1 - l) / 2;
cos_a = cos(a);
sin_a = sin(a);
r = l + amp * (-0.14861 * cos_a + 1.78277 * sin_a);
g = l + amp * (-0.29227 * cos_a - 0.90649 * sin_a);
b = l + amp * (+1.97294 * cos_a);
return chroma(clip_rgb([r * 255, g * 255, b * 255, 1]));
};
f.start = function(s) {
if (s == null) {
return start;
}
start = s;
return f;
};
f.rotations = function(r) {
if (r == null) {
return rotations;
}
rotations = r;
return f;
};
f.gamma = function(g) {
if (g == null) {
return gamma;
}
gamma = g;
return f;
};
f.hue = function(h) {
if (h == null) {
return hue;
}
hue = h;
if (type(hue) === 'array') {
dh = hue[1] - hue[0];
if (dh === 0) {
hue = hue[1];
}
} else {
dh = 0;
}
return f;
};
f.lightness = function(h) {
if (h == null) {
return lightness;
}
if (type(h) === 'array') {
lightness = h;
dl = h[1] - h[0];
} else {
lightness = [h, h];
dl = 0;
}
return f;
};
f.scale = function() {
return chroma.scale(f);
};
f.hue(hue);
return f;
};
chroma.random = function() {
var code, digits, i, o;
digits = '0123456789abcdef';
code = '#';
for (i = o = 0; o < 6; i = ++o) {
code += digits.charAt(floor(Math.random() * 16));
}
return new Color(code);
};
_interpolators = [];
interpolate = function(col1, col2, f, m) {
var interpol, len, o, res;
if (f == null) {
f = 0.5;
}
if (m == null) {
m = 'rgb';
}
/*
interpolates between colors
f = 0 --> me
f = 1 --> col
*/
if (type(col1) !== 'object') {
col1 = chroma(col1);
}
if (type(col2) !== 'object') {
col2 = chroma(col2);
}
for (o = 0, len = _interpolators.length; o < len; o++) {
interpol = _interpolators[o];
if (m === interpol[0]) {