node_modules/color/index.js - nifi-fds - Git at Google

 'use strict';

 var colorString = require('color-string');
 var convert = require('color-convert');

 var _slice = [].slice;

 var skippedModels = [
 	// to be honest, I don't really feel like keyword belongs in color convert, but eh.
 	'keyword',

 	// gray conflicts with some method names, and has its own method defined.
 	'gray',

 	// shouldn't really be in color-convert either...
 	'hex'
 ];

 var hashedModelKeys = {};
 Object.keys(convert).forEach(function (model) {
 	hashedModelKeys[_slice.call(convert[model].labels).sort().join('')] = model;
 });

 var limiters = {};

 function Color(obj, model) {
 	if (!(this instanceof Color)) {
 		return new Color(obj, model);
 	}

 	if (model && model in skippedModels) {
 		model = null;
 	}

 	if (model && !(model in convert)) {
 		throw new Error('Unknown model: ' + model);
 	}

 	var i;
 	var channels;

 	if (obj == null) { // eslint-disable-line no-eq-null,eqeqeq
 		this.model = 'rgb';
 		this.color = [0, 0, 0];
 		this.valpha = 1;
 	} else if (obj instanceof Color) {
 		this.model = obj.model;
 		this.color = obj.color.slice();
 		this.valpha = obj.valpha;
 	} else if (typeof obj === 'string') {
 		var result = colorString.get(obj);
 		if (result === null) {
 			throw new Error('Unable to parse color from string: ' + obj);
 		}

 		this.model = result.model;
 		channels = convert[this.model].channels;
 		this.color = result.value.slice(0, channels);
 		this.valpha = typeof result.value[channels] === 'number' ? result.value[channels] : 1;
 	} else if (obj.length) {
 		this.model = model || 'rgb';
 		channels = convert[this.model].channels;
 		var newArr = _slice.call(obj, 0, channels);
 		this.color = zeroArray(newArr, channels);
 		this.valpha = typeof obj[channels] === 'number' ? obj[channels] : 1;
 	} else if (typeof obj === 'number') {
 		// this is always RGB - can be converted later on.
 		obj &= 0xFFFFFF;
 		this.model = 'rgb';
 		this.color = [
 			(obj >> 16) & 0xFF,
 			(obj >> 8) & 0xFF,
 			obj & 0xFF
 		];
 		this.valpha = 1;
 	} else {
 		this.valpha = 1;

 		var keys = Object.keys(obj);
 		if ('alpha' in obj) {
 			keys.splice(keys.indexOf('alpha'), 1);
 			this.valpha = typeof obj.alpha === 'number' ? obj.alpha : 0;
 		}

 		var hashedKeys = keys.sort().join('');
 		if (!(hashedKeys in hashedModelKeys)) {
 			throw new Error('Unable to parse color from object: ' + JSON.stringify(obj));
 		}

 		this.model = hashedModelKeys[hashedKeys];

 		var labels = convert[this.model].labels;
 		var color = [];
 		for (i = 0; i < labels.length; i++) {
 			color.push(obj[labels[i]]);
 		}

 		this.color = zeroArray(color);
 	}

 	// perform limitations (clamping, etc.)
 	if (limiters[this.model]) {
 		channels = convert[this.model].channels;
 		for (i = 0; i < channels; i++) {
 			var limit = limiters[this.model][i];
 			if (limit) {
 				this.color[i] = limit(this.color[i]);
 			}
 		}
 	}

 	this.valpha = Math.max(0, Math.min(1, this.valpha));

 	if (Object.freeze) {
 		Object.freeze(this);
 	}
 }

 Color.prototype = {
 	toString: function () {
 		return this.string();
 	},

 	toJSON: function () {
 		return this[this.model]();
 	},

 	string: function (places) {
 		var self = this.model in colorString.to ? this : this.rgb();
 		self = self.round(typeof places === 'number' ? places : 1);
 		var args = self.valpha === 1 ? self.color : self.color.concat(this.valpha);
 		return colorString.to[self.model](args);
 	},

 	percentString: function (places) {
 		var self = this.rgb().round(typeof places === 'number' ? places : 1);
 		var args = self.valpha === 1 ? self.color : self.color.concat(this.valpha);
 		return colorString.to.rgb.percent(args);
 	},

 	array: function () {
 		return this.valpha === 1 ? this.color.slice() : this.color.concat(this.valpha);
 	},

 	object: function () {
 		var result = {};
 		var channels = convert[this.model].channels;
 		var labels = convert[this.model].labels;

 		for (var i = 0; i < channels; i++) {
 			result[labels[i]] = this.color[i];
 		}

 		if (this.valpha !== 1) {
 			result.alpha = this.valpha;
 		}

 		return result;
 	},

 	unitArray: function () {
 		var rgb = this.rgb().color;
 		rgb[0] /= 255;
 		rgb[1] /= 255;
 		rgb[2] /= 255;

 		if (this.valpha !== 1) {
 			rgb.push(this.valpha);
 		}

 		return rgb;
 	},

 	unitObject: function () {
 		var rgb = this.rgb().object();
 		rgb.r /= 255;
 		rgb.g /= 255;
 		rgb.b /= 255;

 		if (this.valpha !== 1) {
 			rgb.alpha = this.valpha;
 		}

 		return rgb;
 	},

 	round: function (places) {
 		places = Math.max(places || 0, 0);
 		return new Color(this.color.map(roundToPlace(places)).concat(this.valpha), this.model);
 	},

 	alpha: function (val) {
 		if (arguments.length) {
 			return new Color(this.color.concat(Math.max(0, Math.min(1, val))), this.model);
 		}

 		return this.valpha;
 	},

 	// rgb
 	red: getset('rgb', 0, maxfn(255)),
 	green: getset('rgb', 1, maxfn(255)),
 	blue: getset('rgb', 2, maxfn(255)),

 	hue: getset(['hsl', 'hsv', 'hsl', 'hwb', 'hcg'], 0, function (val) { return ((val % 360) + 360) % 360; }), // eslint-disable-line brace-style

 	saturationl: getset('hsl', 1, maxfn(100)),
 	lightness: getset('hsl', 2, maxfn(100)),

 	saturationv: getset('hsv', 1, maxfn(100)),
 	value: getset('hsv', 2, maxfn(100)),

 	chroma: getset('hcg', 1, maxfn(100)),
 	gray: getset('hcg', 2, maxfn(100)),

 	white: getset('hwb', 1, maxfn(100)),
 	wblack: getset('hwb', 2, maxfn(100)),

 	cyan: getset('cmyk', 0, maxfn(100)),
 	magenta: getset('cmyk', 1, maxfn(100)),
 	yellow: getset('cmyk', 2, maxfn(100)),
 	black: getset('cmyk', 3, maxfn(100)),

 	x: getset('xyz', 0, maxfn(100)),
 	y: getset('xyz', 1, maxfn(100)),
 	z: getset('xyz', 2, maxfn(100)),

 	l: getset('lab', 0, maxfn(100)),
 	a: getset('lab', 1),
 	b: getset('lab', 2),

 	keyword: function (val) {
 		if (arguments.length) {
 			return new Color(val);
 		}

 		return convert[this.model].keyword(this.color);
 	},

 	hex: function (val) {
 		if (arguments.length) {
 			return new Color(val);
 		}

 		return colorString.to.hex(this.rgb().round().color);
 	},

 	rgbNumber: function () {
 		var rgb = this.rgb().color;
 		return ((rgb[0] & 0xFF) << 16) | ((rgb[1] & 0xFF) << 8) | (rgb[2] & 0xFF);
 	},

 	luminosity: function () {
 		// http://www.w3.org/TR/WCAG20/#relativeluminancedef
 		var rgb = this.rgb().color;

 		var lum = [];
 		for (var i = 0; i < rgb.length; i++) {
 			var chan = rgb[i] / 255;
 			lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
 		}

 		return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
 	},

 	contrast: function (color2) {
 		// http://www.w3.org/TR/WCAG20/#contrast-ratiodef
 		var lum1 = this.luminosity();
 		var lum2 = color2.luminosity();

 		if (lum1 > lum2) {
 			return (lum1 + 0.05) / (lum2 + 0.05);
 		}

 		return (lum2 + 0.05) / (lum1 + 0.05);
 	},

 	level: function (color2) {
 		var contrastRatio = this.contrast(color2);
 		if (contrastRatio >= 7.1) {
 			return 'AAA';
 		}

 		return (contrastRatio >= 4.5) ? 'AA' : '';
 	},

 	isDark: function () {
 		// YIQ equation from http://24ways.org/2010/calculating-color-contrast
 		var rgb = this.rgb().color;
 		var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
 		return yiq < 128;
 	},

 	isLight: function () {
 		return !this.isDark();
 	},

 	negate: function () {
 		var rgb = this.rgb();
 		for (var i = 0; i < 3; i++) {
 			rgb.color[i] = 255 - rgb.color[i];
 		}
 		return rgb;
 	},

 	lighten: function (ratio) {
 		var hsl = this.hsl();
 		hsl.color[2] += hsl.color[2] * ratio;
 		return hsl;
 	},

 	darken: function (ratio) {
 		var hsl = this.hsl();
 		hsl.color[2] -= hsl.color[2] * ratio;
 		return hsl;
 	},

 	saturate: function (ratio) {
 		var hsl = this.hsl();
 		hsl.color[1] += hsl.color[1] * ratio;
 		return hsl;
 	},

 	desaturate: function (ratio) {
 		var hsl = this.hsl();
 		hsl.color[1] -= hsl.color[1] * ratio;
 		return hsl;
 	},

 	whiten: function (ratio) {
 		var hwb = this.hwb();
 		hwb.color[1] += hwb.color[1] * ratio;
 		return hwb;
 	},

 	blacken: function (ratio) {
 		var hwb = this.hwb();
 		hwb.color[2] += hwb.color[2] * ratio;
 		return hwb;
 	},

 	grayscale: function () {
 		// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
 		var rgb = this.rgb().color;
 		var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
 		return Color.rgb(val, val, val);
 	},

 	fade: function (ratio) {
 		return this.alpha(this.valpha - (this.valpha * ratio));
 	},

 	opaquer: function (ratio) {
 		return this.alpha(this.valpha + (this.valpha * ratio));
 	},

 	rotate: function (degrees) {
 		var hsl = this.hsl();
 		var hue = hsl.color[0];
 		hue = (hue + degrees) % 360;
 		hue = hue < 0 ? 360 + hue : hue;
 		hsl.color[0] = hue;
 		return hsl;
 	},

 	mix: function (mixinColor, weight) {
 		// ported from sass implementation in C
 		// https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
 		if (!mixinColor || !mixinColor.rgb) {
 			throw new Error('Argument to "mix" was not a Color instance, but rather an instance of ' + typeof mixinColor);
 		}
 		var color1 = mixinColor.rgb();
 		var color2 = this.rgb();
 		var p = weight === undefined ? 0.5 : weight;

 		var w = 2 * p - 1;
 		var a = color1.alpha() - color2.alpha();

 		var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
 		var w2 = 1 - w1;

 		return Color.rgb(
 				w1 * color1.red() + w2 * color2.red(),
 				w1 * color1.green() + w2 * color2.green(),
 				w1 * color1.blue() + w2 * color2.blue(),
 				color1.alpha() * p + color2.alpha() * (1 - p));
 	}
 };

 // model conversion methods and static constructors
 Object.keys(convert).forEach(function (model) {
 	if (skippedModels.indexOf(model) !== -1) {
 		return;
 	}

 	var channels = convert[model].channels;

 	// conversion methods
 	Color.prototype[model] = function () {
 		if (this.model === model) {
 			return new Color(this);
 		}

 		if (arguments.length) {
 			return new Color(arguments, model);
 		}

 		var newAlpha = typeof arguments[channels] === 'number' ? channels : this.valpha;
 		return new Color(assertArray(convert[this.model][model].raw(this.color)).concat(newAlpha), model);
 	};

 	// 'static' construction methods
 	Color[model] = function (color) {
 		if (typeof color === 'number') {
 			color = zeroArray(_slice.call(arguments), channels);
 		}
 		return new Color(color, model);
 	};
 });

 function roundTo(num, places) {
 	return Number(num.toFixed(places));
 }

 function roundToPlace(places) {
 	return function (num) {
 		return roundTo(num, places);
 	};
 }

 function getset(model, channel, modifier) {
 	model = Array.isArray(model) ? model : [model];

 	model.forEach(function (m) {
 		(limiters[m] || (limiters[m] = []))[channel] = modifier;
 	});

 	model = model[0];

 	return function (val) {
 		var result;

 		if (arguments.length) {
 			if (modifier) {
 				val = modifier(val);
 			}

 			result = this[model]();
 			result.color[channel] = val;
 			return result;
 		}

 		result = this[model]().color[channel];
 		if (modifier) {
 			result = modifier(result);
 		}

 		return result;
 	};
 }

 function maxfn(max) {
 	return function (v) {
 		return Math.max(0, Math.min(max, v));
 	};
 }

 function assertArray(val) {
 	return Array.isArray(val) ? val : [val];
 }

 function zeroArray(arr, length) {
 	for (var i = 0; i < length; i++) {
 		if (typeof arr[i] !== 'number') {
 			arr[i] = 0;
 		}
 	}

 	return arr;
 }

 module.exports = Color;
	'use strict';

	var colorString = require('color-string');
	var convert = require('color-convert');

	var _slice = [].slice;

	var skippedModels = [
	// to be honest, I don't really feel like keyword belongs in color convert, but eh.
	'keyword',

	// gray conflicts with some method names, and has its own method defined.
	'gray',

	// shouldn't really be in color-convert either...
	'hex'
	];

	var hashedModelKeys = {};
	Object.keys(convert).forEach(function (model) {
	hashedModelKeys[_slice.call(convert[model].labels).sort().join('')] = model;
	});

	var limiters = {};

	function Color(obj, model) {
	if (!(this instanceof Color)) {
	return new Color(obj, model);
	}

	if (model && model in skippedModels) {
	model = null;
	}

	if (model && !(model in convert)) {
	throw new Error('Unknown model: ' + model);
	}

	var i;
	var channels;

	if (obj == null) { // eslint-disable-line no-eq-null,eqeqeq
	this.model = 'rgb';
	this.color = [0, 0, 0];
	this.valpha = 1;
	} else if (obj instanceof Color) {
	this.model = obj.model;
	this.color = obj.color.slice();
	this.valpha = obj.valpha;
	} else if (typeof obj === 'string') {
	var result = colorString.get(obj);
	if (result === null) {
	throw new Error('Unable to parse color from string: ' + obj);
	}

	this.model = result.model;
	channels = convert[this.model].channels;
	this.color = result.value.slice(0, channels);
	this.valpha = typeof result.value[channels] === 'number' ? result.value[channels] : 1;
	} else if (obj.length) {
	this.model = model \|\| 'rgb';
	channels = convert[this.model].channels;
	var newArr = _slice.call(obj, 0, channels);
	this.color = zeroArray(newArr, channels);
	this.valpha = typeof obj[channels] === 'number' ? obj[channels] : 1;
	} else if (typeof obj === 'number') {
	// this is always RGB - can be converted later on.
	obj &= 0xFFFFFF;
	this.model = 'rgb';
	this.color = [
	(obj >> 16) & 0xFF,
	(obj >> 8) & 0xFF,
	obj & 0xFF
	];
	this.valpha = 1;
	} else {
	this.valpha = 1;

	var keys = Object.keys(obj);
	if ('alpha' in obj) {
	keys.splice(keys.indexOf('alpha'), 1);
	this.valpha = typeof obj.alpha === 'number' ? obj.alpha : 0;
	}

	var hashedKeys = keys.sort().join('');
	if (!(hashedKeys in hashedModelKeys)) {
	throw new Error('Unable to parse color from object: ' + JSON.stringify(obj));
	}

	this.model = hashedModelKeys[hashedKeys];

	var labels = convert[this.model].labels;
	var color = [];
	for (i = 0; i < labels.length; i++) {
	color.push(obj[labels[i]]);
	}

	this.color = zeroArray(color);
	}

	// perform limitations (clamping, etc.)
	if (limiters[this.model]) {
	channels = convert[this.model].channels;
	for (i = 0; i < channels; i++) {
	var limit = limiters[this.model][i];
	if (limit) {
	this.color[i] = limit(this.color[i]);
	}
	}
	}

	this.valpha = Math.max(0, Math.min(1, this.valpha));

	if (Object.freeze) {
	Object.freeze(this);
	}
	}

	Color.prototype = {
	toString: function () {
	return this.string();
	},

	toJSON: function () {
	return this[this.model]();
	},

	string: function (places) {
	var self = this.model in colorString.to ? this : this.rgb();
	self = self.round(typeof places === 'number' ? places : 1);
	var args = self.valpha === 1 ? self.color : self.color.concat(this.valpha);
	return colorString.to[self.model](args);
	},

	percentString: function (places) {
	var self = this.rgb().round(typeof places === 'number' ? places : 1);
	var args = self.valpha === 1 ? self.color : self.color.concat(this.valpha);
	return colorString.to.rgb.percent(args);
	},

	array: function () {
	return this.valpha === 1 ? this.color.slice() : this.color.concat(this.valpha);
	},

	object: function () {
	var result = {};
	var channels = convert[this.model].channels;
	var labels = convert[this.model].labels;

	for (var i = 0; i < channels; i++) {
	result[labels[i]] = this.color[i];
	}

	if (this.valpha !== 1) {
	result.alpha = this.valpha;
	}

	return result;
	},

	unitArray: function () {
	var rgb = this.rgb().color;
	rgb[0] /= 255;
	rgb[1] /= 255;
	rgb[2] /= 255;

	if (this.valpha !== 1) {
	rgb.push(this.valpha);
	}

	return rgb;
	},

	unitObject: function () {
	var rgb = this.rgb().object();
	rgb.r /= 255;
	rgb.g /= 255;
	rgb.b /= 255;

	if (this.valpha !== 1) {
	rgb.alpha = this.valpha;
	}

	return rgb;
	},

	round: function (places) {
	places = Math.max(places \|\| 0, 0);
	return new Color(this.color.map(roundToPlace(places)).concat(this.valpha), this.model);
	},

	alpha: function (val) {
	if (arguments.length) {
	return new Color(this.color.concat(Math.max(0, Math.min(1, val))), this.model);
	}

	return this.valpha;
	},

	// rgb
	red: getset('rgb', 0, maxfn(255)),
	green: getset('rgb', 1, maxfn(255)),
	blue: getset('rgb', 2, maxfn(255)),

	hue: getset(['hsl', 'hsv', 'hsl', 'hwb', 'hcg'], 0, function (val) { return ((val % 360) + 360) % 360; }), // eslint-disable-line brace-style

	saturationl: getset('hsl', 1, maxfn(100)),
	lightness: getset('hsl', 2, maxfn(100)),

	saturationv: getset('hsv', 1, maxfn(100)),
	value: getset('hsv', 2, maxfn(100)),

	chroma: getset('hcg', 1, maxfn(100)),
	gray: getset('hcg', 2, maxfn(100)),

	white: getset('hwb', 1, maxfn(100)),
	wblack: getset('hwb', 2, maxfn(100)),

	cyan: getset('cmyk', 0, maxfn(100)),
	magenta: getset('cmyk', 1, maxfn(100)),
	yellow: getset('cmyk', 2, maxfn(100)),
	black: getset('cmyk', 3, maxfn(100)),

	x: getset('xyz', 0, maxfn(100)),
	y: getset('xyz', 1, maxfn(100)),
	z: getset('xyz', 2, maxfn(100)),

	l: getset('lab', 0, maxfn(100)),
	a: getset('lab', 1),
	b: getset('lab', 2),

	keyword: function (val) {
	if (arguments.length) {
	return new Color(val);
	}

	return convert[this.model].keyword(this.color);
	},

	hex: function (val) {
	if (arguments.length) {
	return new Color(val);
	}

	return colorString.to.hex(this.rgb().round().color);
	},

	rgbNumber: function () {
	var rgb = this.rgb().color;
	return ((rgb[0] & 0xFF) << 16) \| ((rgb[1] & 0xFF) << 8) \| (rgb[2] & 0xFF);
	},

	luminosity: function () {
	// http://www.w3.org/TR/WCAG20/#relativeluminancedef
	var rgb = this.rgb().color;

	var lum = [];
	for (var i = 0; i < rgb.length; i++) {
	var chan = rgb[i] / 255;
	lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
	}

	return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
	},

	contrast: function (color2) {
	// http://www.w3.org/TR/WCAG20/#contrast-ratiodef
	var lum1 = this.luminosity();
	var lum2 = color2.luminosity();

	if (lum1 > lum2) {
	return (lum1 + 0.05) / (lum2 + 0.05);
	}

	return (lum2 + 0.05) / (lum1 + 0.05);
	},

	level: function (color2) {
	var contrastRatio = this.contrast(color2);
	if (contrastRatio >= 7.1) {
	return 'AAA';
	}

	return (contrastRatio >= 4.5) ? 'AA' : '';
	},

	isDark: function () {
	// YIQ equation from http://24ways.org/2010/calculating-color-contrast
	var rgb = this.rgb().color;
	var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
	return yiq < 128;
	},

	isLight: function () {
	return !this.isDark();
	},

	negate: function () {
	var rgb = this.rgb();
	for (var i = 0; i < 3; i++) {
	rgb.color[i] = 255 - rgb.color[i];
	}
	return rgb;
	},

	lighten: function (ratio) {
	var hsl = this.hsl();
	hsl.color[2] += hsl.color[2] * ratio;
	return hsl;
	},

	darken: function (ratio) {
	var hsl = this.hsl();
	hsl.color[2] -= hsl.color[2] * ratio;
	return hsl;
	},

	saturate: function (ratio) {
	var hsl = this.hsl();
	hsl.color[1] += hsl.color[1] * ratio;
	return hsl;
	},

	desaturate: function (ratio) {
	var hsl = this.hsl();
	hsl.color[1] -= hsl.color[1] * ratio;
	return hsl;
	},

	whiten: function (ratio) {
	var hwb = this.hwb();
	hwb.color[1] += hwb.color[1] * ratio;
	return hwb;
	},

	blacken: function (ratio) {
	var hwb = this.hwb();
	hwb.color[2] += hwb.color[2] * ratio;
	return hwb;
	},

	grayscale: function () {
	// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
	var rgb = this.rgb().color;
	var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
	return Color.rgb(val, val, val);
	},

	fade: function (ratio) {
	return this.alpha(this.valpha - (this.valpha * ratio));
	},

	opaquer: function (ratio) {
	return this.alpha(this.valpha + (this.valpha * ratio));
	},

	rotate: function (degrees) {
	var hsl = this.hsl();
	var hue = hsl.color[0];
	hue = (hue + degrees) % 360;
	hue = hue < 0 ? 360 + hue : hue;
	hsl.color[0] = hue;
	return hsl;
	},

	mix: function (mixinColor, weight) {
	// ported from sass implementation in C
	// https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
	if (!mixinColor \|\| !mixinColor.rgb) {
	throw new Error('Argument to "mix" was not a Color instance, but rather an instance of ' + typeof mixinColor);
	}
	var color1 = mixinColor.rgb();
	var color2 = this.rgb();
	var p = weight === undefined ? 0.5 : weight;

	var w = 2 * p - 1;
	var a = color1.alpha() - color2.alpha();

	var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
	var w2 = 1 - w1;

	return Color.rgb(
	w1 * color1.red() + w2 * color2.red(),
	w1 * color1.green() + w2 * color2.green(),
	w1 * color1.blue() + w2 * color2.blue(),
	color1.alpha() * p + color2.alpha() * (1 - p));
	}
	};

	// model conversion methods and static constructors
	Object.keys(convert).forEach(function (model) {
	if (skippedModels.indexOf(model) !== -1) {
	return;
	}

	var channels = convert[model].channels;

	// conversion methods
	Color.prototype[model] = function () {
	if (this.model === model) {
	return new Color(this);
	}

	if (arguments.length) {
	return new Color(arguments, model);
	}

	var newAlpha = typeof arguments[channels] === 'number' ? channels : this.valpha;
	return new Color(assertArray(convert[this.model][model].raw(this.color)).concat(newAlpha), model);
	};

	// 'static' construction methods
	Color[model] = function (color) {
	if (typeof color === 'number') {
	color = zeroArray(_slice.call(arguments), channels);
	}
	return new Color(color, model);
	};
	});

	function roundTo(num, places) {
	return Number(num.toFixed(places));
	}

	function roundToPlace(places) {
	return function (num) {
	return roundTo(num, places);
	};
	}

	function getset(model, channel, modifier) {
	model = Array.isArray(model) ? model : [model];

	model.forEach(function (m) {
	(limiters[m] \|\| (limiters[m] = []))[channel] = modifier;
	});

	model = model[0];

	return function (val) {
	var result;

	if (arguments.length) {
	if (modifier) {
	val = modifier(val);
	}

	result = this[model]();
	result.color[channel] = val;
	return result;
	}

	result = this[model]().color[channel];
	if (modifier) {
	result = modifier(result);
	}

	return result;
	};
	}

	function maxfn(max) {
	return function (v) {
	return Math.max(0, Math.min(max, v));
	};
	}

	function assertArray(val) {
	return Array.isArray(val) ? val : [val];
	}

	function zeroArray(arr, length) {
	for (var i = 0; i < length; i++) {
	if (typeof arr[i] !== 'number') {
	arr[i] = 0;
	}
	}

	return arr;
	}

	module.exports = Color;