forked from Mirrors/apostrophe
1893 lines
56 KiB
JavaScript
1893 lines
56 KiB
JavaScript
// Generated by CoffeeScript 1.6.2
|
|
/**
|
|
* @license
|
|
*
|
|
* chroma.js - JavaScript library for color conversions
|
|
*
|
|
* Copyright (c) 2011-2013, 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, K, PITHIRD, TWOPI, X, Y, Z, bezier, brewer, chroma, clip_rgb, colors, cos, css2rgb, hex2rgb, hsi2rgb, hsl2rgb, hsv2rgb, lab2lch, lab2rgb, lab_xyz, lch2lab, lch2rgb, limit, luminance, luminance_x, rgb2hex, rgb2hsi, rgb2hsl, rgb2hsv, rgb2lab, rgb2lch, rgb_xyz, root, type, unpack, xyz_lab, xyz_rgb, _ref;
|
|
|
|
chroma = function(x, y, z, m) {
|
|
return new Color(x, y, z, m);
|
|
};
|
|
|
|
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.color = function(x, y, z, m) {
|
|
return new Color(x, y, z, m);
|
|
};
|
|
|
|
chroma.hsl = function(h, s, l, a) {
|
|
return new Color(h, s, l, a, 'hsl');
|
|
};
|
|
|
|
chroma.hsv = function(h, s, v, a) {
|
|
return new Color(h, s, v, a, 'hsv');
|
|
};
|
|
|
|
chroma.rgb = function(r, g, b, a) {
|
|
return new Color(r, g, b, a, 'rgb');
|
|
};
|
|
|
|
chroma.hex = function(x) {
|
|
return new Color(x);
|
|
};
|
|
|
|
chroma.css = function(x) {
|
|
return new Color(x);
|
|
};
|
|
|
|
chroma.lab = function(l, a, b) {
|
|
return new Color(l, a, b, 'lab');
|
|
};
|
|
|
|
chroma.lch = function(l, c, h) {
|
|
return new Color(l, c, h, 'lch');
|
|
};
|
|
|
|
chroma.hsi = function(h, s, i) {
|
|
return new Color(h, s, i, 'hsi');
|
|
};
|
|
|
|
chroma.gl = function(r, g, b, a) {
|
|
return new Color(r * 255, g * 255, b * 255, a, 'gl');
|
|
};
|
|
|
|
chroma.interpolate = function(a, b, f, m) {
|
|
if ((a == null) || (b == null)) {
|
|
return '#000';
|
|
}
|
|
if (type(a) === 'string') {
|
|
a = new Color(a);
|
|
}
|
|
if (type(b) === 'string') {
|
|
b = new Color(b);
|
|
}
|
|
return a.interpolate(f, b, m);
|
|
};
|
|
|
|
chroma.mix = chroma.interpolate;
|
|
|
|
chroma.contrast = function(a, b) {
|
|
var l1, l2;
|
|
|
|
if (type(a) === 'string') {
|
|
a = new Color(a);
|
|
}
|
|
if (type(b) === 'string') {
|
|
b = new Color(b);
|
|
}
|
|
l1 = a.luminance();
|
|
l2 = b.luminance();
|
|
if (l1 > l2) {
|
|
return (l1 + 0.05) / (l2 + 0.05);
|
|
} else {
|
|
return (l2 + 0.05) / (l1 + 0.05);
|
|
}
|
|
};
|
|
|
|
chroma.luminance = function(color) {
|
|
return chroma(color).luminance();
|
|
};
|
|
|
|
chroma._Color = Color;
|
|
|
|
/**
|
|
chroma.js
|
|
|
|
Copyright (c) 2011-2013, 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:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer.
|
|
|
|
* 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.
|
|
|
|
* 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.
|
|
|
|
@source: https://github.com/gka/chroma.js
|
|
*/
|
|
|
|
|
|
Color = (function() {
|
|
function Color() {
|
|
var a, arg, args, m, me, me_rgb, x, y, z, _i, _len, _ref, _ref1, _ref2, _ref3;
|
|
|
|
me = this;
|
|
args = [];
|
|
for (_i = 0, _len = arguments.length; _i < _len; _i++) {
|
|
arg = arguments[_i];
|
|
if (arg != null) {
|
|
args.push(arg);
|
|
}
|
|
}
|
|
if (args.length === 0) {
|
|
_ref = [255, 0, 255, 1, 'rgb'], x = _ref[0], y = _ref[1], z = _ref[2], a = _ref[3], m = _ref[4];
|
|
} else if (type(args[0]) === "array") {
|
|
if (args[0].length === 3) {
|
|
_ref1 = args[0], x = _ref1[0], y = _ref1[1], z = _ref1[2];
|
|
a = 1;
|
|
} else if (args[0].length === 4) {
|
|
_ref2 = args[0], x = _ref2[0], y = _ref2[1], z = _ref2[2], a = _ref2[3];
|
|
} else {
|
|
throw 'unknown input argument';
|
|
}
|
|
m = args[1];
|
|
} else if (type(args[0]) === "string") {
|
|
x = args[0];
|
|
m = 'hex';
|
|
} else if (type(args[0]) === "object") {
|
|
_ref3 = args[0]._rgb, x = _ref3[0], y = _ref3[1], z = _ref3[2], a = _ref3[3];
|
|
m = 'rgb';
|
|
} else if (args.length >= 3) {
|
|
x = args[0];
|
|
y = args[1];
|
|
z = args[2];
|
|
}
|
|
if (args.length === 3) {
|
|
m = 'rgb';
|
|
a = 1;
|
|
} else if (args.length === 4) {
|
|
if (type(args[3]) === "string") {
|
|
m = args[3];
|
|
a = 1;
|
|
} else if (type(args[3]) === "number") {
|
|
m = 'rgb';
|
|
a = args[3];
|
|
}
|
|
} else if (args.length === 5) {
|
|
a = args[3];
|
|
m = args[4];
|
|
}
|
|
if (a == null) {
|
|
a = 1;
|
|
}
|
|
if (m === 'rgb') {
|
|
me._rgb = [x, y, z, a];
|
|
} else if (m === 'gl') {
|
|
me._rgb = [x * 255, y * 255, z * 255, a];
|
|
} else if (m === 'hsl') {
|
|
me._rgb = hsl2rgb(x, y, z);
|
|
me._rgb[3] = a;
|
|
} else if (m === 'hsv') {
|
|
me._rgb = hsv2rgb(x, y, z);
|
|
me._rgb[3] = a;
|
|
} else if (m === 'hex') {
|
|
me._rgb = hex2rgb(x);
|
|
} else if (m === 'lab') {
|
|
me._rgb = lab2rgb(x, y, z);
|
|
me._rgb[3] = a;
|
|
} else if (m === 'lch') {
|
|
me._rgb = lch2rgb(x, y, z);
|
|
me._rgb[3] = a;
|
|
} else if (m === 'hsi') {
|
|
me._rgb = hsi2rgb(x, y, z);
|
|
me._rgb[3] = a;
|
|
}
|
|
me_rgb = clip_rgb(me._rgb);
|
|
}
|
|
|
|
Color.prototype.rgb = function() {
|
|
return this._rgb.slice(0, 3);
|
|
};
|
|
|
|
Color.prototype.rgba = function() {
|
|
return this._rgb;
|
|
};
|
|
|
|
Color.prototype.hex = function() {
|
|
return rgb2hex(this._rgb);
|
|
};
|
|
|
|
Color.prototype.toString = function() {
|
|
return this.name();
|
|
};
|
|
|
|
Color.prototype.hsl = function() {
|
|
return rgb2hsl(this._rgb);
|
|
};
|
|
|
|
Color.prototype.hsv = function() {
|
|
return rgb2hsv(this._rgb);
|
|
};
|
|
|
|
Color.prototype.lab = function() {
|
|
return rgb2lab(this._rgb);
|
|
};
|
|
|
|
Color.prototype.lch = function() {
|
|
return rgb2lch(this._rgb);
|
|
};
|
|
|
|
Color.prototype.hsi = function() {
|
|
return rgb2hsi(this._rgb);
|
|
};
|
|
|
|
Color.prototype.gl = function() {
|
|
return [this._rgb[0] / 255, this._rgb[1] / 255, this._rgb[2] / 255, this._rgb[3]];
|
|
};
|
|
|
|
Color.prototype.luminance = function() {
|
|
return luminance(this._rgb);
|
|
};
|
|
|
|
Color.prototype.name = function() {
|
|
var h, k;
|
|
|
|
h = this.hex();
|
|
for (k in chroma.colors) {
|
|
if (h === chroma.colors[k]) {
|
|
return k;
|
|
}
|
|
}
|
|
return h;
|
|
};
|
|
|
|
Color.prototype.alpha = function(alpha) {
|
|
if (arguments.length) {
|
|
this._rgb[3] = alpha;
|
|
return this;
|
|
}
|
|
return this._rgb[3];
|
|
};
|
|
|
|
Color.prototype.css = function(mode) {
|
|
var hsl, me, rgb, rnd;
|
|
|
|
if (mode == null) {
|
|
mode = 'rgb';
|
|
}
|
|
me = this;
|
|
rgb = me._rgb;
|
|
if (mode.length === 3 && rgb[3] < 1) {
|
|
mode += 'a';
|
|
}
|
|
if (mode === 'rgb') {
|
|
return mode + '(' + rgb.slice(0, 3).join(',') + ')';
|
|
} else if (mode === 'rgba') {
|
|
return mode + '(' + rgb.join(',') + ')';
|
|
} else if (mode === 'hsl' || mode === 'hsla') {
|
|
hsl = me.hsl();
|
|
rnd = function(a) {
|
|
return Math.round(a * 100) / 100;
|
|
};
|
|
hsl[0] = rnd(hsl[0]);
|
|
hsl[1] = rnd(hsl[1] * 100) + '%';
|
|
hsl[2] = rnd(hsl[2] * 100) + '%';
|
|
if (mode.length === 4) {
|
|
hsl[3] = rgb[3];
|
|
}
|
|
return mode + '(' + hsl.join(',') + ')';
|
|
}
|
|
};
|
|
|
|
Color.prototype.interpolate = function(f, col, m) {
|
|
/*
|
|
interpolates between colors
|
|
f = 0 --> me
|
|
f = 1 --> col
|
|
*/
|
|
|
|
var dh, hue, hue0, hue1, lbv, lbv0, lbv1, me, res, sat, sat0, sat1, xyz0, xyz1;
|
|
|
|
me = this;
|
|
if (m == null) {
|
|
m = 'rgb';
|
|
}
|
|
if (type(col) === "string") {
|
|
col = new Color(col);
|
|
}
|
|
if (m === 'hsl' || m === 'hsv' || m === 'lch' || m === 'hsi') {
|
|
if (m === 'hsl') {
|
|
xyz0 = me.hsl();
|
|
xyz1 = col.hsl();
|
|
} else if (m === 'hsv') {
|
|
xyz0 = me.hsv();
|
|
xyz1 = col.hsv();
|
|
} else if (m === 'hsi') {
|
|
xyz0 = me.hsi();
|
|
xyz1 = col.hsi();
|
|
} else if (m === 'lch') {
|
|
xyz0 = me.lch();
|
|
xyz1 = col.lch();
|
|
}
|
|
if (m.substr(0, 1) === 'h') {
|
|
hue0 = xyz0[0], sat0 = xyz0[1], lbv0 = xyz0[2];
|
|
hue1 = xyz1[0], sat1 = xyz1[1], lbv1 = xyz1[2];
|
|
} else {
|
|
lbv0 = xyz0[0], sat0 = xyz0[1], hue0 = xyz0[2];
|
|
lbv1 = xyz1[0], sat1 = xyz1[1], hue1 = xyz1[2];
|
|
}
|
|
if (!isNaN(hue0) && !isNaN(hue1)) {
|
|
if (hue1 > hue0 && hue1 - hue0 > 180) {
|
|
dh = hue1 - (hue0 + 360);
|
|
} else if (hue1 < hue0 && hue0 - hue1 > 180) {
|
|
dh = hue1 + 360 - hue0;
|
|
} else {
|
|
dh = hue1 - hue0;
|
|
}
|
|
hue = hue0 + f * dh;
|
|
} else if (!isNaN(hue0)) {
|
|
hue = hue0;
|
|
if (lbv1 === 1 || lbv1 === 0) {
|
|
sat = sat0;
|
|
}
|
|
} else if (!isNaN(hue1)) {
|
|
hue = hue1;
|
|
if (lbv0 === 1 || lbv0 === 0) {
|
|
sat = sat1;
|
|
}
|
|
} else {
|
|
hue = Number.NaN;
|
|
}
|
|
if (sat == null) {
|
|
sat = sat0 + f * (sat1 - sat0);
|
|
}
|
|
lbv = lbv0 + f * (lbv1 - lbv0);
|
|
if (m.substr(0, 1) === 'h') {
|
|
res = new Color(hue, sat, lbv, m);
|
|
} else {
|
|
res = new Color(lbv, sat, hue, m);
|
|
}
|
|
} else if (m === 'rgb') {
|
|
xyz0 = me._rgb;
|
|
xyz1 = col._rgb;
|
|
res = new Color(xyz0[0] + f * (xyz1[0] - xyz0[0]), xyz0[1] + f * (xyz1[1] - xyz0[1]), xyz0[2] + f * (xyz1[2] - xyz0[2]), m);
|
|
} else if (m === 'lab') {
|
|
xyz0 = me.lab();
|
|
xyz1 = col.lab();
|
|
res = new Color(xyz0[0] + f * (xyz1[0] - xyz0[0]), xyz0[1] + f * (xyz1[1] - xyz0[1]), xyz0[2] + f * (xyz1[2] - xyz0[2]), m);
|
|
} else {
|
|
throw "color mode " + m + " is not supported";
|
|
}
|
|
res.alpha(me.alpha() + f * (col.alpha() - me.alpha()));
|
|
return res;
|
|
};
|
|
|
|
Color.prototype.premultiply = function() {
|
|
var a, rgb;
|
|
|
|
rgb = this.rgb();
|
|
a = this.alpha();
|
|
return chroma(rgb[0] * a, rgb[1] * a, rgb[2] * a, a);
|
|
};
|
|
|
|
Color.prototype.darken = function(amount) {
|
|
var lch, me;
|
|
|
|
if (amount == null) {
|
|
amount = 20;
|
|
}
|
|
me = this;
|
|
lch = me.lch();
|
|
lch[0] -= amount;
|
|
return chroma.lch(lch).alpha(me.alpha());
|
|
};
|
|
|
|
Color.prototype.darker = function(amount) {
|
|
return this.darken(amount);
|
|
};
|
|
|
|
Color.prototype.brighten = function(amount) {
|
|
if (amount == null) {
|
|
amount = 20;
|
|
}
|
|
return this.darken(-amount);
|
|
};
|
|
|
|
Color.prototype.brighter = function(amount) {
|
|
return this.brighten(amount);
|
|
};
|
|
|
|
Color.prototype.saturate = function(amount) {
|
|
var lch, me;
|
|
|
|
if (amount == null) {
|
|
amount = 20;
|
|
}
|
|
me = this;
|
|
lch = me.lch();
|
|
lch[1] += amount;
|
|
return chroma.lch(lch).alpha(me.alpha());
|
|
};
|
|
|
|
Color.prototype.desaturate = function(amount) {
|
|
if (amount == null) {
|
|
amount = 20;
|
|
}
|
|
return this.saturate(-amount);
|
|
};
|
|
|
|
return Color;
|
|
|
|
})();
|
|
|
|
clip_rgb = function(rgb) {
|
|
var i;
|
|
|
|
for (i in rgb) {
|
|
if (i < 3) {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
return rgb;
|
|
};
|
|
|
|
css2rgb = function(css) {
|
|
var hsl, i, m, rgb, _i, _j, _k, _l;
|
|
|
|
if ((chroma.colors != null) && chroma.colors[css]) {
|
|
return hex2rgb(chroma.colors[css]);
|
|
}
|
|
if (m = css.match(/rgb\(\s*(\-?\d+),\s*(\-?\d+)\s*,\s*(\-?\d+)\s*\)/)) {
|
|
rgb = m.slice(1, 4);
|
|
for (i = _i = 0; _i <= 2; i = ++_i) {
|
|
rgb[i] = +rgb[i];
|
|
}
|
|
rgb[3] = 1;
|
|
} else if (m = css.match(/rgba\(\s*(\-?\d+),\s*(\-?\d+)\s*,\s*(\-?\d+)\s*,\s*([01]|[01]?\.\d+)\)/)) {
|
|
rgb = m.slice(1, 5);
|
|
for (i = _j = 0; _j <= 3; i = ++_j) {
|
|
rgb[i] = +rgb[i];
|
|
}
|
|
} else if (m = css.match(/rgb\(\s*(\-?\d+(?:\.\d+)?)%,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*\)/)) {
|
|
rgb = m.slice(1, 4);
|
|
for (i = _k = 0; _k <= 2; i = ++_k) {
|
|
rgb[i] = Math.round(rgb[i] * 2.55);
|
|
}
|
|
rgb[3] = 1;
|
|
} else if (m = css.match(/rgba\(\s*(\-?\d+(?:\.\d+)?)%,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*([01]|[01]?\.\d+)\)/)) {
|
|
rgb = m.slice(1, 5);
|
|
for (i = _l = 0; _l <= 2; i = ++_l) {
|
|
rgb[i] = Math.round(rgb[i] * 2.55);
|
|
}
|
|
rgb[3] = +rgb[3];
|
|
} else if (m = css.match(/hsl\(\s*(\-?\d+(?:\.\d+)?),\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*\)/)) {
|
|
hsl = m.slice(1, 4);
|
|
hsl[1] *= 0.01;
|
|
hsl[2] *= 0.01;
|
|
rgb = hsl2rgb(hsl);
|
|
rgb[3] = 1;
|
|
} else if (m = css.match(/hsla\(\s*(\-?\d+(?:\.\d+)?),\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*([01]|[01]?\.\d+)\)/)) {
|
|
hsl = m.slice(1, 4);
|
|
hsl[1] *= 0.01;
|
|
hsl[2] *= 0.01;
|
|
rgb = hsl2rgb(hsl);
|
|
rgb[3] = +m[4];
|
|
}
|
|
return rgb;
|
|
};
|
|
|
|
hex2rgb = function(hex) {
|
|
var a, b, g, r, rgb, u;
|
|
|
|
if (hex.match(/^#?([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/)) {
|
|
if (hex.length === 4 || hex.length === 7) {
|
|
hex = hex.substr(1);
|
|
}
|
|
if (hex.length === 3) {
|
|
hex = hex.split("");
|
|
hex = hex[0] + hex[0] + hex[1] + hex[1] + hex[2] + hex[2];
|
|
}
|
|
u = parseInt(hex, 16);
|
|
r = u >> 16;
|
|
g = u >> 8 & 0xFF;
|
|
b = u & 0xFF;
|
|
return [r, g, b, 1];
|
|
}
|
|
if (hex.match(/^#?([A-Fa-f0-9]{8})$/)) {
|
|
if (hex.length === 9) {
|
|
hex = hex.substr(1);
|
|
}
|
|
u = parseInt(hex, 16);
|
|
r = u >> 24 & 0xFF;
|
|
g = u >> 16 & 0xFF;
|
|
b = u >> 8 & 0xFF;
|
|
a = u & 0xFF;
|
|
return [r, g, b, a];
|
|
}
|
|
if (rgb = css2rgb(hex)) {
|
|
return rgb;
|
|
}
|
|
throw "unknown color: " + hex;
|
|
};
|
|
|
|
hsi2rgb = function(h, s, i) {
|
|
/*
|
|
borrowed from here:
|
|
http://hummer.stanford.edu/museinfo/doc/examples/humdrum/keyscape2/hsi2rgb.cpp
|
|
*/
|
|
|
|
var b, g, r, _ref;
|
|
|
|
_ref = unpack(arguments), h = _ref[0], s = _ref[1], i = _ref[2];
|
|
h /= 360;
|
|
if (h < 1 / 3) {
|
|
b = (1 - s) / 3;
|
|
r = (1 + s * cos(TWOPI * h) / cos(PITHIRD - TWOPI * h)) / 3;
|
|
g = 1 - (b + r);
|
|
} else if (h < 2 / 3) {
|
|
h -= 1 / 3;
|
|
r = (1 - s) / 3;
|
|
g = (1 + s * cos(TWOPI * h) / cos(PITHIRD - TWOPI * h)) / 3;
|
|
b = 1 - (r + g);
|
|
} else {
|
|
h -= 2 / 3;
|
|
g = (1 - s) / 3;
|
|
b = (1 + s * cos(TWOPI * h) / cos(PITHIRD - TWOPI * h)) / 3;
|
|
r = 1 - (g + b);
|
|
}
|
|
r = limit(i * r * 3);
|
|
g = limit(i * g * 3);
|
|
b = limit(i * b * 3);
|
|
return [r * 255, g * 255, b * 255];
|
|
};
|
|
|
|
hsl2rgb = function() {
|
|
var b, c, g, h, i, l, r, s, t1, t2, t3, _i, _ref, _ref1;
|
|
|
|
_ref = unpack(arguments), h = _ref[0], s = _ref[1], l = _ref[2];
|
|
if (s === 0) {
|
|
r = g = b = l * 255;
|
|
} else {
|
|
t3 = [0, 0, 0];
|
|
c = [0, 0, 0];
|
|
t2 = l < 0.5 ? l * (1 + s) : l + s - l * s;
|
|
t1 = 2 * l - t2;
|
|
h /= 360;
|
|
t3[0] = h + 1 / 3;
|
|
t3[1] = h;
|
|
t3[2] = h - 1 / 3;
|
|
for (i = _i = 0; _i <= 2; i = ++_i) {
|
|
if (t3[i] < 0) {
|
|
t3[i] += 1;
|
|
}
|
|
if (t3[i] > 1) {
|
|
t3[i] -= 1;
|
|
}
|
|
if (6 * t3[i] < 1) {
|
|
c[i] = t1 + (t2 - t1) * 6 * t3[i];
|
|
} else if (2 * t3[i] < 1) {
|
|
c[i] = t2;
|
|
} else if (3 * t3[i] < 2) {
|
|
c[i] = t1 + (t2 - t1) * ((2 / 3) - t3[i]) * 6;
|
|
} else {
|
|
c[i] = t1;
|
|
}
|
|
}
|
|
_ref1 = [Math.round(c[0] * 255), Math.round(c[1] * 255), Math.round(c[2] * 255)], r = _ref1[0], g = _ref1[1], b = _ref1[2];
|
|
}
|
|
return [r, g, b];
|
|
};
|
|
|
|
hsv2rgb = function() {
|
|
var b, f, g, h, i, p, q, r, s, t, v, _ref, _ref1, _ref2, _ref3, _ref4, _ref5, _ref6;
|
|
|
|
_ref = unpack(arguments), h = _ref[0], s = _ref[1], v = _ref[2];
|
|
v *= 255;
|
|
if (s === 0) {
|
|
r = g = b = v;
|
|
} else {
|
|
if (h === 360) {
|
|
h = 0;
|
|
}
|
|
if (h > 360) {
|
|
h -= 360;
|
|
}
|
|
if (h < 0) {
|
|
h += 360;
|
|
}
|
|
h /= 60;
|
|
i = Math.floor(h);
|
|
f = h - i;
|
|
p = v * (1 - s);
|
|
q = v * (1 - s * f);
|
|
t = v * (1 - s * (1 - f));
|
|
switch (i) {
|
|
case 0:
|
|
_ref1 = [v, t, p], r = _ref1[0], g = _ref1[1], b = _ref1[2];
|
|
break;
|
|
case 1:
|
|
_ref2 = [q, v, p], r = _ref2[0], g = _ref2[1], b = _ref2[2];
|
|
break;
|
|
case 2:
|
|
_ref3 = [p, v, t], r = _ref3[0], g = _ref3[1], b = _ref3[2];
|
|
break;
|
|
case 3:
|
|
_ref4 = [p, q, v], r = _ref4[0], g = _ref4[1], b = _ref4[2];
|
|
break;
|
|
case 4:
|
|
_ref5 = [t, p, v], r = _ref5[0], g = _ref5[1], b = _ref5[2];
|
|
break;
|
|
case 5:
|
|
_ref6 = [v, p, q], r = _ref6[0], g = _ref6[1], b = _ref6[2];
|
|
}
|
|
}
|
|
r = Math.round(r);
|
|
g = Math.round(g);
|
|
b = Math.round(b);
|
|
return [r, g, b];
|
|
};
|
|
|
|
K = 18;
|
|
|
|
X = 0.950470;
|
|
|
|
Y = 1;
|
|
|
|
Z = 1.088830;
|
|
|
|
lab2lch = function() {
|
|
var a, b, c, h, l, _ref;
|
|
|
|
_ref = unpack(arguments), l = _ref[0], a = _ref[1], b = _ref[2];
|
|
c = Math.sqrt(a * a + b * b);
|
|
h = Math.atan2(b, a) / Math.PI * 180;
|
|
return [l, c, h];
|
|
};
|
|
|
|
lab2rgb = function(l, a, b) {
|
|
/*
|
|
adapted to match d3 implementation
|
|
*/
|
|
|
|
var g, r, x, y, z, _ref, _ref1;
|
|
|
|
if (l !== void 0 && l.length === 3) {
|
|
_ref = l, l = _ref[0], a = _ref[1], b = _ref[2];
|
|
}
|
|
if (l !== void 0 && l.length === 3) {
|
|
_ref1 = l, l = _ref1[0], a = _ref1[1], b = _ref1[2];
|
|
}
|
|
y = (l + 16) / 116;
|
|
x = y + a / 500;
|
|
z = y - b / 200;
|
|
x = lab_xyz(x) * X;
|
|
y = lab_xyz(y) * Y;
|
|
z = lab_xyz(z) * 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 [limit(r, 0, 255), limit(g, 0, 255), limit(b, 0, 255), 1];
|
|
};
|
|
|
|
lab_xyz = function(x) {
|
|
if (x > 0.206893034) {
|
|
return x * x * x;
|
|
} else {
|
|
return (x - 4 / 29) / 7.787037;
|
|
}
|
|
};
|
|
|
|
xyz_rgb = function(r) {
|
|
return Math.round(255 * (r <= 0.00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - 0.055));
|
|
};
|
|
|
|
lch2lab = function() {
|
|
/*
|
|
Convert from a qualitative parameter h and a quantitative parameter l to a 24-bit pixel. These formulas were invented by David Dalrymple to obtain maximum contrast without going out of gamut if the parameters are in the range 0-1.
|
|
A saturation multiplier was added by Gregor Aisch
|
|
*/
|
|
|
|
var c, h, l, _ref;
|
|
|
|
_ref = unpack(arguments), l = _ref[0], c = _ref[1], h = _ref[2];
|
|
h = h * Math.PI / 180;
|
|
return [l, Math.cos(h) * c, Math.sin(h) * c];
|
|
};
|
|
|
|
lch2rgb = function(l, c, h) {
|
|
var L, a, b, g, r, _ref, _ref1;
|
|
|
|
_ref = lch2lab(l, c, h), L = _ref[0], a = _ref[1], b = _ref[2];
|
|
_ref1 = lab2rgb(L, a, b), r = _ref1[0], g = _ref1[1], b = _ref1[2];
|
|
return [limit(r, 0, 255), limit(g, 0, 255), limit(b, 0, 255)];
|
|
};
|
|
|
|
luminance = function(r, g, b) {
|
|
var _ref;
|
|
|
|
_ref = unpack(arguments), r = _ref[0], g = _ref[1], b = _ref[2];
|
|
r = luminance_x(r);
|
|
g = luminance_x(g);
|
|
b = luminance_x(b);
|
|
return 0.2126 * r + 0.7152 * g + 0.0722 * b;
|
|
};
|
|
|
|
luminance_x = function(x) {
|
|
x /= 255;
|
|
if (x <= 0.03928) {
|
|
return x / 12.92;
|
|
} else {
|
|
return Math.pow((x + 0.055) / 1.055, 2.4);
|
|
}
|
|
};
|
|
|
|
rgb2hex = function() {
|
|
var b, g, r, str, u, _ref;
|
|
|
|
_ref = unpack(arguments), r = _ref[0], g = _ref[1], b = _ref[2];
|
|
u = r << 16 | g << 8 | b;
|
|
str = "000000" + u.toString(16);
|
|
return "#" + str.substr(str.length - 6);
|
|
};
|
|
|
|
rgb2hsi = function() {
|
|
/*
|
|
borrowed from here:
|
|
http://hummer.stanford.edu/museinfo/doc/examples/humdrum/keyscape2/rgb2hsi.cpp
|
|
*/
|
|
|
|
var TWOPI, b, g, h, i, min, r, s, _ref;
|
|
|
|
_ref = unpack(arguments), r = _ref[0], g = _ref[1], b = _ref[2];
|
|
TWOPI = Math.PI * 2;
|
|
r /= 255;
|
|
g /= 255;
|
|
b /= 255;
|
|
min = Math.min(r, g, b);
|
|
i = (r + g + b) / 3;
|
|
s = 1 - min / i;
|
|
if (s === 0) {
|
|
h = 0;
|
|
} else {
|
|
h = ((r - g) + (r - b)) / 2;
|
|
h /= Math.sqrt((r - g) * (r - g) + (r - b) * (g - b));
|
|
h = Math.acos(h);
|
|
if (b > g) {
|
|
h = TWOPI - h;
|
|
}
|
|
h /= TWOPI;
|
|
}
|
|
return [h * 360, s, i];
|
|
};
|
|
|
|
rgb2hsl = function(r, g, b) {
|
|
var h, l, max, min, s, _ref;
|
|
|
|
if (r !== void 0 && r.length >= 3) {
|
|
_ref = r, r = _ref[0], g = _ref[1], b = _ref[2];
|
|
}
|
|
r /= 255;
|
|
g /= 255;
|
|
b /= 255;
|
|
min = Math.min(r, g, b);
|
|
max = Math.max(r, g, b);
|
|
l = (max + min) / 2;
|
|
if (max === min) {
|
|
s = 0;
|
|
h = Number.NaN;
|
|
} else {
|
|
s = l < 0.5 ? (max - min) / (max + min) : (max - min) / (2 - max - min);
|
|
}
|
|
if (r === max) {
|
|
h = (g - b) / (max - min);
|
|
} else if (g === max) {
|
|
h = 2 + (b - r) / (max - min);
|
|
} else if (b === max) {
|
|
h = 4 + (r - g) / (max - min);
|
|
}
|
|
h *= 60;
|
|
if (h < 0) {
|
|
h += 360;
|
|
}
|
|
return [h, s, l];
|
|
};
|
|
|
|
rgb2hsv = function() {
|
|
var b, delta, g, h, max, min, r, s, v, _ref;
|
|
|
|
_ref = unpack(arguments), r = _ref[0], g = _ref[1], b = _ref[2];
|
|
min = Math.min(r, g, b);
|
|
max = Math.max(r, g, b);
|
|
delta = max - min;
|
|
v = max / 255.0;
|
|
if (max === 0) {
|
|
h = Number.NaN;
|
|
s = 0;
|
|
} else {
|
|
s = delta / max;
|
|
if (r === max) {
|
|
h = (g - b) / delta;
|
|
}
|
|
if (g === max) {
|
|
h = 2 + (b - r) / delta;
|
|
}
|
|
if (b === max) {
|
|
h = 4 + (r - g) / delta;
|
|
}
|
|
h *= 60;
|
|
if (h < 0) {
|
|
h += 360;
|
|
}
|
|
}
|
|
return [h, s, v];
|
|
};
|
|
|
|
rgb2lab = function() {
|
|
var b, g, r, x, y, z, _ref;
|
|
|
|
_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) / X);
|
|
y = xyz_lab((0.2126729 * r + 0.7151522 * g + 0.0721750 * b) / Y);
|
|
z = xyz_lab((0.0193339 * r + 0.1191920 * g + 0.9503041 * b) / Z);
|
|
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 Math.pow((r + 0.055) / 1.055, 2.4);
|
|
}
|
|
};
|
|
|
|
xyz_lab = function(x) {
|
|
if (x > 0.008856) {
|
|
return Math.pow(x, 1 / 3);
|
|
} else {
|
|
return 7.787037 * x + 4 / 29;
|
|
}
|
|
};
|
|
|
|
rgb2lch = function() {
|
|
var a, b, g, l, r, _ref, _ref1;
|
|
|
|
_ref = unpack(arguments), r = _ref[0], g = _ref[1], b = _ref[2];
|
|
_ref1 = rgb2lab(r, g, b), l = _ref1[0], a = _ref1[1], b = _ref1[2];
|
|
return lab2lch(l, a, b);
|
|
};
|
|
|
|
/*
|
|
chroma.js
|
|
|
|
Copyright (c) 2011-2013, 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:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer.
|
|
|
|
* 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.
|
|
|
|
* 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.
|
|
|
|
@source: https://github.com/gka/chroma.js
|
|
*/
|
|
|
|
|
|
chroma.scale = function(colors, positions) {
|
|
var classifyValue, f, getClass, getColor, resetCache, setColors, setDomain, tmap, _colorCache, _colors, _correctLightness, _domain, _fixed, _max, _min, _mode, _nacol, _numClasses, _out, _pos, _spread;
|
|
|
|
_mode = 'rgb';
|
|
_nacol = chroma('#ccc');
|
|
_spread = 0;
|
|
_fixed = false;
|
|
_domain = [0, 1];
|
|
_colors = [];
|
|
_out = false;
|
|
_pos = [];
|
|
_min = 0;
|
|
_max = 1;
|
|
_correctLightness = false;
|
|
_numClasses = 0;
|
|
_colorCache = {};
|
|
setColors = function(colors, positions) {
|
|
var c, col, _i, _j, _ref, _ref1, _ref2;
|
|
|
|
if (colors == null) {
|
|
colors = ['#ddd', '#222'];
|
|
}
|
|
if ((colors != null) && type(colors) === 'string' && (((_ref = chroma.brewer) != null ? _ref[colors] : void 0) != null)) {
|
|
colors = chroma.brewer[colors];
|
|
}
|
|
if (type(colors) === 'array') {
|
|
colors = colors.slice(0);
|
|
for (c = _i = 0, _ref1 = colors.length - 1; 0 <= _ref1 ? _i <= _ref1 : _i >= _ref1; c = 0 <= _ref1 ? ++_i : --_i) {
|
|
col = colors[c];
|
|
if (type(col) === "string") {
|
|
colors[c] = chroma(col);
|
|
}
|
|
}
|
|
if (positions != null) {
|
|
_pos = positions;
|
|
} else {
|
|
_pos = [];
|
|
for (c = _j = 0, _ref2 = colors.length - 1; 0 <= _ref2 ? _j <= _ref2 : _j >= _ref2; c = 0 <= _ref2 ? ++_j : --_j) {
|
|
_pos.push(c / (colors.length - 1));
|
|
}
|
|
}
|
|
}
|
|
resetCache();
|
|
return _colors = colors;
|
|
};
|
|
setDomain = function(domain) {
|
|
if (domain == null) {
|
|
domain = [];
|
|
}
|
|
/*
|
|
# use this if you want to display a limited number of data classes
|
|
# possible methods are "equalinterval", "quantiles", "custom"
|
|
*/
|
|
|
|
_domain = domain;
|
|
_min = domain[0];
|
|
_max = domain[domain.length - 1];
|
|
resetCache();
|
|
if (domain.length === 2) {
|
|
return _numClasses = 0;
|
|
} else {
|
|
return _numClasses = domain.length - 1;
|
|
}
|
|
};
|
|
getClass = function(value) {
|
|
var i, n;
|
|
|
|
if (_domain != null) {
|
|
n = _domain.length - 1;
|
|
i = 0;
|
|
while (i < n && value >= _domain[i]) {
|
|
i++;
|
|
}
|
|
return i - 1;
|
|
}
|
|
return 0;
|
|
};
|
|
tmap = function(t) {
|
|
return t;
|
|
};
|
|
classifyValue = function(value) {
|
|
var i, maxc, minc, n, val;
|
|
|
|
val = value;
|
|
if (_domain.length > 2) {
|
|
n = _domain.length - 1;
|
|
i = getClass(value);
|
|
minc = _domain[0] + (_domain[1] - _domain[0]) * (0 + _spread * 0.5);
|
|
maxc = _domain[n - 1] + (_domain[n] - _domain[n - 1]) * (1 - _spread * 0.5);
|
|
val = _min + ((_domain[i] + (_domain[i + 1] - _domain[i]) * 0.5 - minc) / (maxc - minc)) * (_max - _min);
|
|
}
|
|
return val;
|
|
};
|
|
getColor = function(val, bypassMap) {
|
|
var c, col, f0, i, k, p, t, _i, _ref;
|
|
|
|
if (bypassMap == null) {
|
|
bypassMap = false;
|
|
}
|
|
if (isNaN(val)) {
|
|
return _nacol;
|
|
}
|
|
if (!bypassMap) {
|
|
if (_domain.length > 2) {
|
|
c = getClass(val);
|
|
t = c / (_numClasses - 1);
|
|
} else {
|
|
t = f0 = (val - _min) / (_max - _min);
|
|
t = Math.min(1, Math.max(0, t));
|
|
}
|
|
} else {
|
|
t = val;
|
|
}
|
|
if (!bypassMap) {
|
|
t = tmap(t);
|
|
}
|
|
k = Math.floor(t * 10000);
|
|
if (_colorCache[k]) {
|
|
col = _colorCache[k];
|
|
} else {
|
|
if (type(_colors) === 'array') {
|
|
for (i = _i = 0, _ref = _pos.length - 1; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
|
|
p = _pos[i];
|
|
if (t <= p) {
|
|
col = _colors[i];
|
|
break;
|
|
}
|
|
if (t >= p && i === _pos.length - 1) {
|
|
col = _colors[i];
|
|
break;
|
|
}
|
|
if (t > p && t < _pos[i + 1]) {
|
|
t = (t - p) / (_pos[i + 1] - p);
|
|
col = chroma.interpolate(_colors[i], _colors[i + 1], t, _mode);
|
|
break;
|
|
}
|
|
}
|
|
} else if (type(_colors) === 'function') {
|
|
col = _colors(t);
|
|
}
|
|
_colorCache[k] = col;
|
|
}
|
|
return col;
|
|
};
|
|
resetCache = function() {
|
|
return _colorCache = {};
|
|
};
|
|
setColors(colors, positions);
|
|
f = function(v) {
|
|
var c;
|
|
|
|
c = getColor(v);
|
|
if (_out && c[_out]) {
|
|
return c[_out]();
|
|
} else {
|
|
return c;
|
|
}
|
|
};
|
|
f.domain = function(domain, classes, mode, key) {
|
|
var d;
|
|
|
|
if (mode == null) {
|
|
mode = 'e';
|
|
}
|
|
if (!arguments.length) {
|
|
return _domain;
|
|
}
|
|
if (classes != null) {
|
|
d = chroma.analyze(domain, key);
|
|
if (classes === 0) {
|
|
domain = [d.min, d.max];
|
|
} else {
|
|
domain = chroma.limits(d, mode, classes);
|
|
}
|
|
}
|
|
setDomain(domain);
|
|
return f;
|
|
};
|
|
f.mode = function(_m) {
|
|
if (!arguments.length) {
|
|
return _mode;
|
|
}
|
|
_mode = _m;
|
|
resetCache();
|
|
return f;
|
|
};
|
|
f.range = function(colors, _pos) {
|
|
setColors(colors, _pos);
|
|
return f;
|
|
};
|
|
f.out = function(_o) {
|
|
_out = _o;
|
|
return f;
|
|
};
|
|
f.spread = function(val) {
|
|
if (!arguments.length) {
|
|
return _spread;
|
|
}
|
|
_spread = val;
|
|
return f;
|
|
};
|
|
f.correctLightness = function(v) {
|
|
if (!arguments.length) {
|
|
return _correctLightness;
|
|
}
|
|
_correctLightness = v;
|
|
resetCache();
|
|
if (_correctLightness) {
|
|
tmap = function(t) {
|
|
var L0, L1, L_actual, L_diff, L_ideal, max_iter, pol, t0, t1;
|
|
|
|
L0 = getColor(0, true).lab()[0];
|
|
L1 = getColor(1, true).lab()[0];
|
|
pol = L0 > L1;
|
|
L_actual = getColor(t, true).lab()[0];
|
|
L_ideal = L0 + (L1 - L0) * t;
|
|
L_diff = L_actual - L_ideal;
|
|
t0 = 0;
|
|
t1 = 1;
|
|
max_iter = 20;
|
|
while (Math.abs(L_diff) > 1e-2 && max_iter-- > 0) {
|
|
(function() {
|
|
if (pol) {
|
|
L_diff *= -1;
|
|
}
|
|
if (L_diff < 0) {
|
|
t0 = t;
|
|
t += (t1 - t) * 0.5;
|
|
} else {
|
|
t1 = t;
|
|
t += (t0 - t) * 0.5;
|
|
}
|
|
L_actual = getColor(t, true).lab()[0];
|
|
return L_diff = L_actual - L_ideal;
|
|
})();
|
|
}
|
|
return t;
|
|
};
|
|
} else {
|
|
tmap = function(t) {
|
|
return t;
|
|
};
|
|
}
|
|
return f;
|
|
};
|
|
f.colors = function(out) {
|
|
var i, samples, _i, _j, _len, _ref;
|
|
|
|
if (out == null) {
|
|
out = 'hex';
|
|
}
|
|
colors = [];
|
|
samples = [];
|
|
if (_domain.length > 2) {
|
|
for (i = _i = 1, _ref = _domain.length; 1 <= _ref ? _i < _ref : _i > _ref; i = 1 <= _ref ? ++_i : --_i) {
|
|
samples.push((_domain[i - 1] + _domain[i]) * 0.5);
|
|
}
|
|
} else {
|
|
samples = _domain;
|
|
}
|
|
for (_j = 0, _len = samples.length; _j < _len; _j++) {
|
|
i = samples[_j];
|
|
colors.push(f(i)[out]());
|
|
}
|
|
return colors;
|
|
};
|
|
return f;
|
|
};
|
|
|
|
if ((_ref = chroma.scales) == null) {
|
|
chroma.scales = {};
|
|
}
|
|
|
|
chroma.scales.cool = function() {
|
|
return chroma.scale([chroma.hsl(180, 1, .9), chroma.hsl(250, .7, .4)]);
|
|
};
|
|
|
|
chroma.scales.hot = function() {
|
|
return chroma.scale(['#000', '#f00', '#ff0', '#fff'], [0, .25, .75, 1]).mode('rgb');
|
|
};
|
|
|
|
/*
|
|
chroma.js
|
|
|
|
Copyright (c) 2011-2013, 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:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer.
|
|
|
|
* 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.
|
|
|
|
* 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.
|
|
|
|
@source: https://github.com/gka/chroma.js
|
|
*/
|
|
|
|
|
|
chroma.analyze = function(data, key, filter) {
|
|
var add, k, r, val, visit, _i, _len;
|
|
|
|
r = {
|
|
min: Number.MAX_VALUE,
|
|
max: Number.MAX_VALUE * -1,
|
|
sum: 0,
|
|
values: [],
|
|
count: 0
|
|
};
|
|
if (filter == null) {
|
|
filter = function() {
|
|
return true;
|
|
};
|
|
}
|
|
add = function(val) {
|
|
if ((val != null) && !isNaN(val)) {
|
|
r.values.push(val);
|
|
r.sum += val;
|
|
if (val < r.min) {
|
|
r.min = val;
|
|
}
|
|
if (val > r.max) {
|
|
r.max = val;
|
|
}
|
|
r.count += 1;
|
|
}
|
|
};
|
|
visit = function(val, k) {
|
|
if (filter(val, k)) {
|
|
if ((key != null) && type(key) === 'function') {
|
|
return add(key(val));
|
|
} else if ((key != null) && type(key) === 'string' || type(key) === 'number') {
|
|
return add(val[key]);
|
|
} else {
|
|
return add(val);
|
|
}
|
|
}
|
|
};
|
|
if (type(data) === 'array') {
|
|
for (_i = 0, _len = data.length; _i < _len; _i++) {
|
|
val = data[_i];
|
|
visit(val);
|
|
}
|
|
} else {
|
|
for (k in data) {
|
|
val = data[k];
|
|
visit(val, k);
|
|
}
|
|
}
|
|
r.domain = [r.min, r.max];
|
|
r.limits = function(mode, num) {
|
|
return chroma.limits(r, mode, num);
|
|
};
|
|
return r;
|
|
};
|
|
|
|
chroma.limits = function(data, mode, num) {
|
|
var assignments, best, centroids, cluster, clusterSizes, dist, i, j, kClusters, limits, max, max_log, min, min_log, mindist, n, nb_iters, newCentroids, p, pb, pr, repeat, sum, tmpKMeansBreaks, value, values, _i, _j, _k, _l, _m, _n, _o, _p, _q, _r, _ref1, _ref10, _ref11, _ref12, _ref13, _ref14, _ref15, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7, _ref8, _ref9, _s, _t, _u, _v, _w;
|
|
|
|
if (mode == null) {
|
|
mode = 'equal';
|
|
}
|
|
if (num == null) {
|
|
num = 7;
|
|
}
|
|
if (data.values == null) {
|
|
data = chroma.analyze(data);
|
|
}
|
|
min = data.min;
|
|
max = data.max;
|
|
sum = data.sum;
|
|
values = data.values.sort(function(a, b) {
|
|
return a - b;
|
|
});
|
|
limits = [];
|
|
if (mode.substr(0, 1) === 'c') {
|
|
limits.push(min);
|
|
limits.push(max);
|
|
}
|
|
if (mode.substr(0, 1) === 'e') {
|
|
limits.push(min);
|
|
for (i = _i = 1, _ref1 = num - 1; 1 <= _ref1 ? _i <= _ref1 : _i >= _ref1; i = 1 <= _ref1 ? ++_i : --_i) {
|
|
limits.push(min + (i / num) * (max - min));
|
|
}
|
|
limits.push(max);
|
|
} else if (mode.substr(0, 1) === 'l') {
|
|
if (min <= 0) {
|
|
throw 'Logarithmic scales are only possible for values > 0';
|
|
}
|
|
min_log = Math.LOG10E * Math.log(min);
|
|
max_log = Math.LOG10E * Math.log(max);
|
|
limits.push(min);
|
|
for (i = _j = 1, _ref2 = num - 1; 1 <= _ref2 ? _j <= _ref2 : _j >= _ref2; i = 1 <= _ref2 ? ++_j : --_j) {
|
|
limits.push(Math.pow(10, min_log + (i / num) * (max_log - min_log)));
|
|
}
|
|
limits.push(max);
|
|
} else if (mode.substr(0, 1) === 'q') {
|
|
limits.push(min);
|
|
for (i = _k = 1, _ref3 = num - 1; 1 <= _ref3 ? _k <= _ref3 : _k >= _ref3; i = 1 <= _ref3 ? ++_k : --_k) {
|
|
p = values.length * i / num;
|
|
pb = Math.floor(p);
|
|
if (pb === p) {
|
|
limits.push(values[pb]);
|
|
} else {
|
|
pr = p - pb;
|
|
limits.push(values[pb] * pr + values[pb + 1] * (1 - pr));
|
|
}
|
|
}
|
|
limits.push(max);
|
|
} else if (mode.substr(0, 1) === 'k') {
|
|
/*
|
|
implementation based on
|
|
http://code.google.com/p/figue/source/browse/trunk/figue.js#336
|
|
simplified for 1-d input values
|
|
*/
|
|
|
|
n = values.length;
|
|
assignments = new Array(n);
|
|
clusterSizes = new Array(num);
|
|
repeat = true;
|
|
nb_iters = 0;
|
|
centroids = null;
|
|
centroids = [];
|
|
centroids.push(min);
|
|
for (i = _l = 1, _ref4 = num - 1; 1 <= _ref4 ? _l <= _ref4 : _l >= _ref4; i = 1 <= _ref4 ? ++_l : --_l) {
|
|
centroids.push(min + (i / num) * (max - min));
|
|
}
|
|
centroids.push(max);
|
|
while (repeat) {
|
|
for (j = _m = 0, _ref5 = num - 1; 0 <= _ref5 ? _m <= _ref5 : _m >= _ref5; j = 0 <= _ref5 ? ++_m : --_m) {
|
|
clusterSizes[j] = 0;
|
|
}
|
|
for (i = _n = 0, _ref6 = n - 1; 0 <= _ref6 ? _n <= _ref6 : _n >= _ref6; i = 0 <= _ref6 ? ++_n : --_n) {
|
|
value = values[i];
|
|
mindist = Number.MAX_VALUE;
|
|
for (j = _o = 0, _ref7 = num - 1; 0 <= _ref7 ? _o <= _ref7 : _o >= _ref7; j = 0 <= _ref7 ? ++_o : --_o) {
|
|
dist = Math.abs(centroids[j] - value);
|
|
if (dist < mindist) {
|
|
mindist = dist;
|
|
best = j;
|
|
}
|
|
}
|
|
clusterSizes[best]++;
|
|
assignments[i] = best;
|
|
}
|
|
newCentroids = new Array(num);
|
|
for (j = _p = 0, _ref8 = num - 1; 0 <= _ref8 ? _p <= _ref8 : _p >= _ref8; j = 0 <= _ref8 ? ++_p : --_p) {
|
|
newCentroids[j] = null;
|
|
}
|
|
for (i = _q = 0, _ref9 = n - 1; 0 <= _ref9 ? _q <= _ref9 : _q >= _ref9; i = 0 <= _ref9 ? ++_q : --_q) {
|
|
cluster = assignments[i];
|
|
if (newCentroids[cluster] === null) {
|
|
newCentroids[cluster] = values[i];
|
|
} else {
|
|
newCentroids[cluster] += values[i];
|
|
}
|
|
}
|
|
for (j = _r = 0, _ref10 = num - 1; 0 <= _ref10 ? _r <= _ref10 : _r >= _ref10; j = 0 <= _ref10 ? ++_r : --_r) {
|
|
newCentroids[j] *= 1 / clusterSizes[j];
|
|
}
|
|
repeat = false;
|
|
for (j = _s = 0, _ref11 = num - 1; 0 <= _ref11 ? _s <= _ref11 : _s >= _ref11; j = 0 <= _ref11 ? ++_s : --_s) {
|
|
if (newCentroids[j] !== centroids[i]) {
|
|
repeat = true;
|
|
break;
|
|
}
|
|
}
|
|
centroids = newCentroids;
|
|
nb_iters++;
|
|
if (nb_iters > 200) {
|
|
repeat = false;
|
|
}
|
|
}
|
|
kClusters = {};
|
|
for (j = _t = 0, _ref12 = num - 1; 0 <= _ref12 ? _t <= _ref12 : _t >= _ref12; j = 0 <= _ref12 ? ++_t : --_t) {
|
|
kClusters[j] = [];
|
|
}
|
|
for (i = _u = 0, _ref13 = n - 1; 0 <= _ref13 ? _u <= _ref13 : _u >= _ref13; i = 0 <= _ref13 ? ++_u : --_u) {
|
|
cluster = assignments[i];
|
|
kClusters[cluster].push(values[i]);
|
|
}
|
|
tmpKMeansBreaks = [];
|
|
for (j = _v = 0, _ref14 = num - 1; 0 <= _ref14 ? _v <= _ref14 : _v >= _ref14; j = 0 <= _ref14 ? ++_v : --_v) {
|
|
tmpKMeansBreaks.push(kClusters[j][0]);
|
|
tmpKMeansBreaks.push(kClusters[j][kClusters[j].length - 1]);
|
|
}
|
|
tmpKMeansBreaks = tmpKMeansBreaks.sort(function(a, b) {
|
|
return a - b;
|
|
});
|
|
limits.push(tmpKMeansBreaks[0]);
|
|
for (i = _w = 1, _ref15 = tmpKMeansBreaks.length - 1; _w <= _ref15; i = _w += 2) {
|
|
if (!isNaN(tmpKMeansBreaks[i])) {
|
|
limits.push(tmpKMeansBreaks[i]);
|
|
}
|
|
}
|
|
}
|
|
return limits;
|
|
};
|
|
|
|
/**
|
|
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'],
|
|
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']
|
|
};
|
|
|
|
/**
|
|
X11 color names
|
|
|
|
http://www.w3.org/TR/css3-color/#svg-color
|
|
*/
|
|
|
|
|
|
chroma.colors = colors = {
|
|
indigo: "#4b0082",
|
|
gold: "#ffd700",
|
|
hotpink: "#ff69b4",
|
|
firebrick: "#b22222",
|
|
indianred: "#cd5c5c",
|
|
yellow: "#ffff00",
|
|
mistyrose: "#ffe4e1",
|
|
darkolivegreen: "#556b2f",
|
|
olive: "#808000",
|
|
darkseagreen: "#8fbc8f",
|
|
pink: "#ffc0cb",
|
|
tomato: "#ff6347",
|
|
lightcoral: "#f08080",
|
|
orangered: "#ff4500",
|
|
navajowhite: "#ffdead",
|
|
lime: "#00ff00",
|
|
palegreen: "#98fb98",
|
|
darkslategrey: "#2f4f4f",
|
|
greenyellow: "#adff2f",
|
|
burlywood: "#deb887",
|
|
seashell: "#fff5ee",
|
|
mediumspringgreen: "#00fa9a",
|
|
fuchsia: "#ff00ff",
|
|
papayawhip: "#ffefd5",
|
|
blanchedalmond: "#ffebcd",
|
|
chartreuse: "#7fff00",
|
|
dimgray: "#696969",
|
|
black: "#000000",
|
|
peachpuff: "#ffdab9",
|
|
springgreen: "#00ff7f",
|
|
aquamarine: "#7fffd4",
|
|
white: "#ffffff",
|
|
orange: "#ffa500",
|
|
lightsalmon: "#ffa07a",
|
|
darkslategray: "#2f4f4f",
|
|
brown: "#a52a2a",
|
|
ivory: "#fffff0",
|
|
dodgerblue: "#1e90ff",
|
|
peru: "#cd853f",
|
|
lawngreen: "#7cfc00",
|
|
chocolate: "#d2691e",
|
|
crimson: "#dc143c",
|
|
forestgreen: "#228b22",
|
|
darkgrey: "#a9a9a9",
|
|
lightseagreen: "#20b2aa",
|
|
cyan: "#00ffff",
|
|
mintcream: "#f5fffa",
|
|
silver: "#c0c0c0",
|
|
antiquewhite: "#faebd7",
|
|
mediumorchid: "#ba55d3",
|
|
skyblue: "#87ceeb",
|
|
gray: "#808080",
|
|
darkturquoise: "#00ced1",
|
|
goldenrod: "#daa520",
|
|
darkgreen: "#006400",
|
|
floralwhite: "#fffaf0",
|
|
darkviolet: "#9400d3",
|
|
darkgray: "#a9a9a9",
|
|
moccasin: "#ffe4b5",
|
|
saddlebrown: "#8b4513",
|
|
grey: "#808080",
|
|
darkslateblue: "#483d8b",
|
|
lightskyblue: "#87cefa",
|
|
lightpink: "#ffb6c1",
|
|
mediumvioletred: "#c71585",
|
|
slategrey: "#708090",
|
|
red: "#ff0000",
|
|
deeppink: "#ff1493",
|
|
limegreen: "#32cd32",
|
|
darkmagenta: "#8b008b",
|
|
palegoldenrod: "#eee8aa",
|
|
plum: "#dda0dd",
|
|
turquoise: "#40e0d0",
|
|
lightgrey: "#d3d3d3",
|
|
lightgoldenrodyellow: "#fafad2",
|
|
darkgoldenrod: "#b8860b",
|
|
lavender: "#e6e6fa",
|
|
maroon: "#800000",
|
|
yellowgreen: "#9acd32",
|
|
sandybrown: "#f4a460",
|
|
thistle: "#d8bfd8",
|
|
violet: "#ee82ee",
|
|
navy: "#000080",
|
|
magenta: "#ff00ff",
|
|
dimgrey: "#696969",
|
|
tan: "#d2b48c",
|
|
rosybrown: "#bc8f8f",
|
|
olivedrab: "#6b8e23",
|
|
blue: "#0000ff",
|
|
lightblue: "#add8e6",
|
|
ghostwhite: "#f8f8ff",
|
|
honeydew: "#f0fff0",
|
|
cornflowerblue: "#6495ed",
|
|
slateblue: "#6a5acd",
|
|
linen: "#faf0e6",
|
|
darkblue: "#00008b",
|
|
powderblue: "#b0e0e6",
|
|
seagreen: "#2e8b57",
|
|
darkkhaki: "#bdb76b",
|
|
snow: "#fffafa",
|
|
sienna: "#a0522d",
|
|
mediumblue: "#0000cd",
|
|
royalblue: "#4169e1",
|
|
lightcyan: "#e0ffff",
|
|
green: "#008000",
|
|
mediumpurple: "#9370db",
|
|
midnightblue: "#191970",
|
|
cornsilk: "#fff8dc",
|
|
paleturquoise: "#afeeee",
|
|
bisque: "#ffe4c4",
|
|
slategray: "#708090",
|
|
darkcyan: "#008b8b",
|
|
khaki: "#f0e68c",
|
|
wheat: "#f5deb3",
|
|
teal: "#008080",
|
|
darkorchid: "#9932cc",
|
|
deepskyblue: "#00bfff",
|
|
salmon: "#fa8072",
|
|
darkred: "#8b0000",
|
|
steelblue: "#4682b4",
|
|
palevioletred: "#db7093",
|
|
lightslategray: "#778899",
|
|
aliceblue: "#f0f8ff",
|
|
lightslategrey: "#778899",
|
|
lightgreen: "#90ee90",
|
|
orchid: "#da70d6",
|
|
gainsboro: "#dcdcdc",
|
|
mediumseagreen: "#3cb371",
|
|
lightgray: "#d3d3d3",
|
|
mediumturquoise: "#48d1cc",
|
|
lemonchiffon: "#fffacd",
|
|
cadetblue: "#5f9ea0",
|
|
lightyellow: "#ffffe0",
|
|
lavenderblush: "#fff0f5",
|
|
coral: "#ff7f50",
|
|
purple: "#800080",
|
|
aqua: "#00ffff",
|
|
whitesmoke: "#f5f5f5",
|
|
mediumslateblue: "#7b68ee",
|
|
darkorange: "#ff8c00",
|
|
mediumaquamarine: "#66cdaa",
|
|
darksalmon: "#e9967a",
|
|
beige: "#f5f5dc",
|
|
blueviolet: "#8a2be2",
|
|
azure: "#f0ffff",
|
|
lightsteelblue: "#b0c4de",
|
|
oldlace: "#fdf5e6"
|
|
};
|
|
|
|
/*
|
|
chroma.js
|
|
|
|
Copyright (c) 2011-2013, 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:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
list of conditions and the following disclaimer.
|
|
|
|
* 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.
|
|
|
|
* 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.
|
|
|
|
@source: https://github.com/gka/chroma.js
|
|
*/
|
|
|
|
|
|
type = (function() {
|
|
/*
|
|
for browser-safe type checking+
|
|
ported from jQuery's $.type
|
|
*/
|
|
|
|
var classToType, name, _i, _len, _ref1;
|
|
|
|
classToType = {};
|
|
_ref1 = "Boolean Number String Function Array Date RegExp Undefined Null".split(" ");
|
|
for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
|
|
name = _ref1[_i];
|
|
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 args;
|
|
} else {
|
|
return args[0];
|
|
}
|
|
};
|
|
|
|
TWOPI = Math.PI * 2;
|
|
|
|
PITHIRD = Math.PI / 3;
|
|
|
|
cos = Math.cos;
|
|
|
|
/*
|
|
interpolates between a set of colors uzing a bezier spline
|
|
*/
|
|
|
|
|
|
bezier = function(colors) {
|
|
var I, I0, I1, c, lab0, lab1, lab2, lab3, _ref1, _ref2, _ref3;
|
|
|
|
colors = (function() {
|
|
var _i, _len, _results;
|
|
|
|
_results = [];
|
|
for (_i = 0, _len = colors.length; _i < _len; _i++) {
|
|
c = colors[_i];
|
|
_results.push(chroma(c));
|
|
}
|
|
return _results;
|
|
})();
|
|
if (colors.length === 2) {
|
|
_ref1 = (function() {
|
|
var _i, _len, _results;
|
|
|
|
_results = [];
|
|
for (_i = 0, _len = colors.length; _i < _len; _i++) {
|
|
c = colors[_i];
|
|
_results.push(c.lab());
|
|
}
|
|
return _results;
|
|
})(), lab0 = _ref1[0], lab1 = _ref1[1];
|
|
I = function(t) {
|
|
var i, lab;
|
|
|
|
lab = (function() {
|
|
var _i, _results;
|
|
|
|
_results = [];
|
|
for (i = _i = 0; _i <= 2; i = ++_i) {
|
|
_results.push(lab0[i] + t * (lab1[i] - lab0[i]));
|
|
}
|
|
return _results;
|
|
})();
|
|
return chroma.lab.apply(chroma, lab);
|
|
};
|
|
} else if (colors.length === 3) {
|
|
_ref2 = (function() {
|
|
var _i, _len, _results;
|
|
|
|
_results = [];
|
|
for (_i = 0, _len = colors.length; _i < _len; _i++) {
|
|
c = colors[_i];
|
|
_results.push(c.lab());
|
|
}
|
|
return _results;
|
|
})(), lab0 = _ref2[0], lab1 = _ref2[1], lab2 = _ref2[2];
|
|
I = function(t) {
|
|
var i, lab;
|
|
|
|
lab = (function() {
|
|
var _i, _results;
|
|
|
|
_results = [];
|
|
for (i = _i = 0; _i <= 2; i = ++_i) {
|
|
_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) {
|
|
_ref3 = (function() {
|
|
var _i, _len, _results;
|
|
|
|
_results = [];
|
|
for (_i = 0, _len = colors.length; _i < _len; _i++) {
|
|
c = colors[_i];
|
|
_results.push(c.lab());
|
|
}
|
|
return _results;
|
|
})(), lab0 = _ref3[0], lab1 = _ref3[1], lab2 = _ref3[2], lab3 = _ref3[3];
|
|
I = function(t) {
|
|
var i, lab;
|
|
|
|
lab = (function() {
|
|
var _i, _results;
|
|
|
|
_results = [];
|
|
for (i = _i = 0; _i <= 2; i = ++_i) {
|
|
_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.interpolate.bezier = bezier;
|
|
|
|
}).call(this);
|