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January 19, 2017 19:56
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| function Color(r, g, b) { | |
| if (Array.isArray(r)) { | |
| colors = r; | |
| } else if (!g && !b) { | |
| colors = this.asRGB(r); | |
| } else { | |
| colors = [r, g, b]; | |
| } | |
| this.r = colors[0]; | |
| this.g = colors[1]; | |
| this.b = colors[2]; | |
| }; | |
| Color.prototype = { | |
| asHex: function() { | |
| return [this.r, this.g, this.b].map(function(dec) { | |
| return (256 + dec).toString(16).slice(1); | |
| }).join(''); | |
| }, | |
| asRGB: function(hex) { | |
| if (!hex) return [this.r, this.g, this.b]; | |
| return hex.replace(/\#([0-9a-f])([0-9a-f])([0-9a-f])$/i, function(m, r, g, b) { | |
| // expand 3-digit hex into 6-digit | |
| return '#' + r + r + g + g + b +b; | |
| }).match(/\#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i) | |
| .slice(1).map(function(a){return parseInt(a, 16);}); | |
| }, | |
| toString: function() { | |
| return this.asHex(); | |
| }, | |
| valueOf: function() { | |
| return (this.r << 16) + (this.g << 8) + this.b; | |
| } | |
| } |
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