chroma-js
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JavaScript library for color conversions
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JavaScript
// Generated by CoffeeScript 1.6.2
/**
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
*/
(function() {
var Color, ColorScale, K, PITHIRD, TWOPI, X, Y, Z, 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, _ref1, _ref2, _ref3, _ref4, _ref5;
root = typeof exports !== "undefined" && exports !== null ? exports : this;
chroma = (_ref = root.chroma) != null ? _ref : root.chroma = {};
if (typeof module !== "undefined" && module !== null) {
module.exports = chroma;
}
Color = (function() {
function Color(x, y, z, m) {
var me, me_rgb, _ref1;
me = this;
if ((x == null) && (y == null) && (z == null) && (m == null)) {
x = [255, 0, 255];
}
if (type(x) === "array" && x.length === 3) {
if (m == null) {
m = y;
}
_ref1 = x, x = _ref1[0], y = _ref1[1], z = _ref1[2];
}
if (type(x) === "string") {
m = 'hex';
} else {
if (m == null) {
m = 'rgb';
}
}
if (m === 'rgb') {
me._rgb = [x, y, z];
} else if (m === 'hsl') {
me._rgb = hsl2rgb(x, y, z);
} else if (m === 'hsv') {
me._rgb = hsv2rgb(x, y, z);
} else if (m === 'hex') {
me._rgb = hex2rgb(x);
} else if (m === 'lab') {
me._rgb = lab2rgb(x, y, z);
} else if (m === 'lch') {
me._rgb = lch2rgb(x, y, z);
} else if (m === 'hsi') {
me._rgb = hsi2rgb(x, y, z);
}
me_rgb = clip_rgb(me._rgb);
}
Color.prototype.rgb = function() {
return this._rgb;
};
Color.prototype.hex = function() {
return rgb2hex(this._rgb);
};
Color.prototype.toString = function() {
return this.hex();
};
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.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.interpolate = function(f, col, m) {
/*
interpolates between colors
*/
var dh, hue, hue0, hue1, lbv, lbv0, lbv1, me, 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 = void 0;
}
if (sat == null) {
sat = sat0 + f * (sat1 - sat0);
}
lbv = lbv0 + f * (lbv1 - lbv0);
if (m.substr(0, 1) === 'h') {
return new Color(hue, sat, lbv, m);
} else {
return new Color(lbv, sat, hue, m);
}
} else if (m === 'rgb') {
xyz0 = me._rgb;
xyz1 = col._rgb;
return 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();
return 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";
}
};
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);
};
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);
};
Color.prototype.desaturate = function(amount) {
if (amount == null) {
amount = 20;
}
return this.saturate(-amount);
};
return Color;
})();
hex2rgb = function(hex) {
var 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];
}
if (rgb = css2rgb(hex)) {
return rgb;
}
throw "unknown color: " + hex;
};
css2rgb = function(css) {
var hsl, i, m, rgb;
if ((chroma.colors != null) && chroma.colors[css]) {
return hex2rgb(chroma.colors[css]);
}
if (m = css.match(/rgb\(\s*(\-?\d+),\s*(\-?\d+)\s*,\s*(\-?\d+)\s*\)/)) {
return m.slice(1, 4);
}
if (m = css.match(/rgb\(\s*(\-?\d+)%,\s*(\-?\d+)%\s*,\s*(\-?\d+)%\s*\)/)) {
rgb = m.slice(1, 4);
for (i in rgb) {
rgb[i] = Math.round(rgb[i] * 2.55);
}
return rgb;
}
if (m = css.match(/hsl\(\s*(\-?\d+),\s*(\-?\d+)%\s*,\s*(\-?\d+)%\s*\)/)) {
hsl = m.slice(1, 4);
hsl[1] *= 0.01;
hsl[2] *= 0.01;
return hsl2rgb(hsl);
}
};
rgb2hex = function() {
var b, g, r, str, u, _ref1;
_ref1 = unpack(arguments), r = _ref1[0], g = _ref1[1], b = _ref1[2];
u = r << 16 | g << 8 | b;
str = "000000" + u.toString(16);
return "#" + str.substr(str.length - 6);
};
hsv2rgb = function() {
var b, f, g, h, i, p, q, r, s, t, v, _ref1, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7;
_ref1 = unpack(arguments), h = _ref1[0], s = _ref1[1], v = _ref1[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:
_ref2 = [v, t, p], r = _ref2[0], g = _ref2[1], b = _ref2[2];
break;
case 1:
_ref3 = [q, v, p], r = _ref3[0], g = _ref3[1], b = _ref3[2];
break;
case 2:
_ref4 = [p, v, t], r = _ref4[0], g = _ref4[1], b = _ref4[2];
break;
case 3:
_ref5 = [p, q, v], r = _ref5[0], g = _ref5[1], b = _ref5[2];
break;
case 4:
_ref6 = [t, p, v], r = _ref6[0], g = _ref6[1], b = _ref6[2];
break;
case 5:
_ref7 = [v, p, q], r = _ref7[0], g = _ref7[1], b = _ref7[2];
}
}
r = Math.round(r);
g = Math.round(g);
b = Math.round(b);
return [r, g, b];
};
rgb2hsv = function() {
var b, delta, g, h, max, min, r, s, v, _ref1;
_ref1 = unpack(arguments), r = _ref1[0], g = _ref1[1], b = _ref1[2];
min = Math.min(r, g, b);
max = Math.max(r, g, b);
delta = max - min;
v = max / 255.0;
if (max === 0) {
h = void 0;
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];
};
hsl2rgb = function() {
var b, c, g, h, i, l, r, s, t1, t2, t3, _i, _ref1, _ref2;
_ref1 = unpack(arguments), h = _ref1[0], s = _ref1[1], l = _ref1[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;
}
}
_ref2 = [Math.round(c[0] * 255), Math.round(c[1] * 255), Math.round(c[2] * 255)], r = _ref2[0], g = _ref2[1], b = _ref2[2];
}
return [r, g, b];
};
rgb2hsl = function(r, g, b) {
var h, l, max, min, s, _ref1;
if (r !== void 0 && r.length === 3) {
_ref1 = r, r = _ref1[0], g = _ref1[1], b = _ref1[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 = void 0;
} 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];
};
K = 18;
X = 0.950470;
Y = 1;
Z = 1.088830;
lab2rgb = function(l, a, b) {
/*
adapted to match d3 implementation
*/
var g, r, x, y, z, _ref1, _ref2;
if (l !== void 0 && l.length === 3) {
_ref1 = l, l = _ref1[0], a = _ref1[1], b = _ref1[2];
}
if (l !== void 0 && l.length === 3) {
_ref2 = l, l = _ref2[0], a = _ref2[1], b = _ref2[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)];
};
rgb2lab = function() {
var b, g, r, x, y, z, _ref1;
_ref1 = unpack(arguments), r = _ref1[0], g = _ref1[1], b = _ref1[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)];
};
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, _ref1;
_ref1 = unpack(arguments), l = _ref1[0], c = _ref1[1], h = _ref1[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, _ref1, _ref2;
_ref1 = lch2lab(l, c, h), L = _ref1[0], a = _ref1[1], b = _ref1[2];
_ref2 = lab2rgb(L, a, b), r = _ref2[0], g = _ref2[1], b = _ref2[2];
return [limit(r, 0, 255), limit(g, 0, 255), limit(b, 0, 255)];
};
lab_xyz = function(x) {
if (x > 0.206893034) {
return x * x * x;
} else {
return (x - 4 / 29) / 7.787037;
}
};
xyz_lab = function(x) {
if (x > 0.008856) {
return Math.pow(x, 1 / 3);
} else {
return 7.787037 * x + 4 / 29;
}
};
xyz_rgb = function(r) {
return Math.round(255 * (r <= 0.00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - 0.055));
};
rgb_xyz = function(r) {
if ((r /= 255) <= 0.04045) {
return r / 12.92;
} else {
return Math.pow((r + 0.055) / 1.055, 2.4);
}
};
lab2lch = function() {
var a, b, c, h, l, _ref1;
_ref1 = unpack(arguments), l = _ref1[0], a = _ref1[1], b = _ref1[2];
c = Math.sqrt(a * a + b * b);
h = Math.atan2(b, a) / Math.PI * 180;
return [l, c, h];
};
rgb2lch = function() {
var a, b, g, l, r, _ref1, _ref2;
_ref1 = unpack(arguments), r = _ref1[0], g = _ref1[1], b = _ref1[2];
_ref2 = rgb2lab(r, g, b), l = _ref2[0], a = _ref2[1], b = _ref2[2];
return lab2lch(l, a, b);
};
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, _ref1;
_ref1 = unpack(arguments), r = _ref1[0], g = _ref1[1], b = _ref1[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];
};
hsi2rgb = function(h, s, i) {
/*
borrowed from here:
http://hummer.stanford.edu/museinfo/doc/examples/humdrum/keyscape2/hsi2rgb.cpp
*/
var b, g, r, _ref1;
_ref1 = unpack(arguments), h = _ref1[0], s = _ref1[1], i = _ref1[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];
};
clip_rgb = function(rgb) {
var i;
for (i in rgb) {
if (rgb[i] < 0) {
rgb[i] = 0;
}
if (rgb[i] > 255) {
rgb[i] = 255;
}
}
return rgb;
};
luminance = function(r, g, b) {
var _ref1;
_ref1 = unpack(arguments), r = _ref1[0], g = _ref1[1], b = _ref1[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);
}
};
chroma.Color = Color;
chroma.color = function(x, y, z, m) {
return new Color(x, y, z, m);
};
chroma.hsl = function(h, s, l) {
return new Color(h, s, l, 'hsl');
};
chroma.hsv = function(h, s, v) {
return new Color(h, s, v, 'hsv');
};
chroma.rgb = function(r, g, b) {
return new Color(r, g, b, '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.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.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.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
*/
root = typeof exports !== "undefined" && exports !== null ? exports : this;
chroma = (_ref1 = root.chroma) != null ? _ref1 : root.chroma = {};
Color = chroma.Color;
ColorScale = (function() {
/*
base class for color scales
*/
function ColorScale(opts) {
var me, _ref2, _ref3;
if (opts == null) {
opts = {};
}
me = this;
me.range(opts.colors, opts.positions);
me._mode = (_ref2 = opts.mode) != null ? _ref2 : 'rgb';
me._nacol = chroma.hex((_ref3 = opts.nacol) != null ? _ref3 : chroma.hex('#ccc'));
me.domain([0, 1]);
me;
}
ColorScale.prototype.range = function(colors, positions) {
var c, col, me, _i, _j, _ref2, _ref3, _ref4;
me = this;
if (colors == null) {
colors = ['#ddd', '#222'];
}
if ((colors != null) && type(colors) === 'string' && (((_ref2 = chroma.brewer) != null ? _ref2[colors] : void 0) != null)) {
colors = chroma.brewer[colors].slice(0);
}
for (c = _i = 0, _ref3 = colors.length - 1; 0 <= _ref3 ? _i <= _ref3 : _i >= _ref3; c = 0 <= _ref3 ? ++_i : --_i) {
col = colors[c];
if (type(col) === "string") {
colors[c] = new Color(col);
}
}
me._colors = colors;
if (positions != null) {
me._pos = positions;
} else {
me._pos = [];
for (c = _j = 0, _ref4 = colors.length - 1; 0 <= _ref4 ? _j <= _ref4 : _j >= _ref4; c = 0 <= _ref4 ? ++_j : --_j) {
me._pos.push(c / (colors.length - 1));
}
}
return me;
};
ColorScale.prototype.domain = function(domain) {
var me;
if (domain == null) {
domain = [];
}
/*
# use this if you want to display a limited number of data classes
# possible methods are "equalinterval", "quantiles", "custom"
*/
me = this;
me._domain = domain;
me._min = domain[0];
me._max = domain[domain.length - 1];
if (domain.length === 2) {
me._numClasses = 0;
} else {
me._numClasses = domain.length - 1;
}
return me;
};
ColorScale.prototype.get = function(value) {
var c, f, f0, me;
me = this;
if (isNaN(value)) {
return me._nacol;
}
if (me._domain.length > 2) {
c = me.getClass(value);
f = c / (me._numClasses - 1);
} else {
f = f0 = (value - me._min) / (me._max - me._min);
f = Math.min(1, Math.max(0, f));
}
return me.fColor(f);
};
ColorScale.prototype.fColor = function(f) {
var col, cols, i, me, p, _i, _ref2;
me = this;
cols = me._colors;
for (i = _i = 0, _ref2 = me._pos.length - 1; 0 <= _ref2 ? _i <= _ref2 : _i >= _ref2; i = 0 <= _ref2 ? ++_i : --_i) {
p = me._pos[i];
if (f <= p) {
col = cols[i];
break;
}
if (f >= p && i === me._pos.length - 1) {
col = cols[i];
break;
}
if (f > p && f < me._pos[i + 1]) {
f = (f - p) / (me._pos[i + 1] - p);
col = chroma.interpolate(cols[i], cols[i + 1], f, me._mode);
break;
}
}
return col;
};
ColorScale.prototype.classifyValue = function(value) {
var domain, i, maxc, me, minc, n, val;
me = this;
domain = me._domain;
val = value;
if (domain.length > 2) {
n = domain.length - 1;
i = me.getClass(value);
val = domain[i] + (domain[i + 1] - domain[i]) * 0.5;
minc = domain[0];
maxc = domain[n - 1];
val = me._min + ((val - minc) / (maxc - minc)) * (me._max - me._min);
}
return val;
};
ColorScale.prototype.getClass = function(value) {
var domain, i, n, self;
self = this;
domain = self._domain;
if (domain != null) {
n = domain.length - 1;
i = 0;
while (i < n && value >= domain[i]) {
i++;
}
return i - 1;
}
return 0;
};
ColorScale.prototype.validValue = function(value) {
return !isNaN(value);
};
return ColorScale;
})();
chroma.ColorScale = ColorScale;
chroma.scale = function(colors, positions) {
var colscale, f, out;
colscale = new chroma.ColorScale();
colscale.range(colors, positions);
out = false;
f = function(v) {
var c;
c = colscale.get(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 colscale._domain;
}
if (classes != null) {
d = chroma.analyze(domain, key);
if (classes === 0) {
domain = [d.min, d.max];
} else {
domain = chroma.limits(d, mode, classes);
}
}
colscale.domain(domain);
return f;
};
f.mode = function(_m) {
if (!arguments.length) {
return colscale._mode;
}
colscale._mode = _m;
return f;
};
f.range = function(_colors, _pos) {
colscale.range(_colors, _pos);
return f;
};
f.out = function(_o) {
out = _o;
return f;
};
f.getColor = function(val) {
return f(val);
};
return f;
};
if ((_ref2 = 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, _ref10, _ref11, _ref12, _ref13, _ref14, _ref15, _ref16, _ref17, _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, _ref3 = num - 1; 1 <= _ref3 ? _i <= _ref3 : _i >= _ref3; i = 1 <= _ref3 ? ++_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, _ref4 = num - 1; 1 <= _ref4 ? _j <= _ref4 : _j >= _ref4; i = 1 <= _ref4 ? ++_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, _ref5 = num - 1; 1 <= _ref5 ? _k <= _ref5 : _k >= _ref5; i = 1 <= _ref5 ? ++_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, _ref6 = num - 1; 1 <= _ref6 ? _l <= _ref6 : _l >= _ref6; i = 1 <= _ref6 ? ++_l : --_l) {
centroids.push(min + (i / num) * (max - min));
}
centroids.push(max);
while (repeat) {
for (j = _m = 0, _ref7 = num - 1; 0 <= _ref7 ? _m <= _ref7 : _m >= _ref7; j = 0 <= _ref7 ? ++_m : --_m) {
clusterSizes[j] = 0;
}
for (i = _n = 0, _ref8 = n - 1; 0 <= _ref8 ? _n <= _ref8 : _n >= _ref8; i = 0 <= _ref8 ? ++_n : --_n) {
value = values[i];
mindist = Number.MAX_VALUE;
for (j = _o = 0, _ref9 = num - 1; 0 <= _ref9 ? _o <= _ref9 : _o >= _ref9; j = 0 <= _ref9 ? ++_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, _ref10 = num - 1; 0 <= _ref10 ? _p <= _ref10 : _p >= _ref10; j = 0 <= _ref10 ? ++_p : --_p) {
newCentroids[j] = null;
}
for (i = _q = 0, _ref11 = n - 1; 0 <= _ref11 ? _q <= _ref11 : _q >= _ref11; i = 0 <= _ref11 ? ++_q : --_q) {
cluster = assignments[i];
if (newCentroids[cluster] === null) {
newCentroids[cluster] = values[i];
} else {
newCentroids[cluster] += values[i];
}
}
for (j = _r = 0, _ref12 = num - 1; 0 <= _ref12 ? _r <= _ref12 : _r >= _ref12; j = 0 <= _ref12 ? ++_r : --_r) {
newCentroids[j] *= 1 / clusterSizes[j];
}
repeat = false;
for (j = _s = 0, _ref13 = num - 1; 0 <= _ref13 ? _s <= _ref13 : _s >= _ref13; j = 0 <= _ref13 ? ++_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, _ref14 = num - 1; 0 <= _ref14 ? _t <= _ref14 : _t >= _ref14; j = 0 <= _ref14 ? ++_t : --_t) {
kClusters[j] = [];
}
for (i = _u = 0, _ref15 = n - 1; 0 <= _ref15 ? _u <= _ref15 : _u >= _ref15; i = 0 <= _ref15 ? ++_u : --_u) {
cluster = assignments[i];
kClusters[cluster].push(values[i]);
}
tmpKMeansBreaks = [];
for (j = _v = 0, _ref16 = num - 1; 0 <= _ref16 ? _v <= _ref16 : _v >= _ref16; j = 0 <= _ref16 ? ++_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, _ref17 = tmpKMeansBreaks.length - 1; _w <= _ref17; i = _w += 2) {
if (!isNaN(tmpKMeansBreaks[i])) {
limits.push(tmpKMeansBreaks[i]);
}
}
}
return limits;
};
/*
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
*/
root = typeof exports !== "undefined" && exports !== null ? exports : this;
type = (function() {
/*
for browser-safe type checking+
ported from jQuery's $.type
*/
var classToType, name, _i, _len, _ref3;
classToType = {};
_ref3 = "Boolean Number String Function Array Date RegExp Undefined Null".split(" ");
for (_i = 0, _len = _ref3.length; _i < _len; _i++) {
name = _ref3[_i];
classToType["[object " + name + "]"] = name.toLowerCase();
}
return function(obj) {
var strType;
strType = Object.prototype.toString.call(obj);
return classToType[strType] || "object";
};
})();
if ((_ref3 = root.type) == null) {
root.type = type;
}
Array.max = function(array) {
return Math.max.apply(Math, array);
};
Array.min = function(array) {
return Math.min.apply(Math, array);
};
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;
/**
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
*/
root = typeof exports !== "undefined" && exports !== null ? exports : this;
chroma = (_ref4 = root.chroma) != null ? _ref4 : root.chroma = {};
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
*/
root = typeof exports !== "undefined" && exports !== null ? exports : this;
chroma = (_ref5 = root.chroma) != null ? _ref5 : root.chroma = {};
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"
};
}).call(this);