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// # Copyright (C) 2010-2017 RhodeCode GmbH
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// #
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// # This program is free software: you can redistribute it and/or modify
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// # it under the terms of the GNU Affero General Public License, version 3
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// # (only), as published by the Free Software Foundation.
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// #
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// # This program is distributed in the hope that it will be useful,
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// # but WITHOUT ANY WARRANTY; without even the implied warranty of
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// # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// # GNU General Public License for more details.
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// #
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// # You should have received a copy of the GNU Affero General Public License
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// # along with this program. If not, see <http://www.gnu.org/licenses/>.
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// #
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// # This program is dual-licensed. If you wish to learn more about the
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// # RhodeCode Enterprise Edition, including its added features, Support services,
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// # and proprietary license terms, please see https://rhodecode.com/licenses/
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/**
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* SmartColorGenerator
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*
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*usage::
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* var CG = new ColorGenerator();
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* var col = CG.getColor(key); //returns array of RGB
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* 'rgb({0})'.format(col.join(',')
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*
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* @returns {ColorGenerator}
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*/
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// TODO: no usages found. Maybe it's time to remove it
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var ColorGenerator = function(){
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this.GOLDEN_RATIO = 0.618033988749895;
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this.CURRENT_RATIO = 0.22717784590367374; // this can be random
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this.HSV_1 = 0.75;// saturation
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this.HSV_2 = 0.95;
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this.color;
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this.cacheColorMap = {};
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};
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ColorGenerator.prototype = {
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getColor:function(key){
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if(this.cacheColorMap[key] !== undefined){
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return this.cacheColorMap[key];
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}
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else{
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this.cacheColorMap[key] = this.generateColor();
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return this.cacheColorMap[key];
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}
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},
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_hsvToRgb:function(h,s,v){
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if (s === 0.0)
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return [v, v, v];
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i = parseInt(h * 6.0);
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f = (h * 6.0) - i;
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p = v * (1.0 - s);
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q = v * (1.0 - s * f);
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t = v * (1.0 - s * (1.0 - f));
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i = i % 6;
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if (i === 0)
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return [v, t, p];
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if (i === 1)
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return [q, v, p];
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if (i === 2)
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return [p, v, t];
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if (i === 3)
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return [p, q, v];
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if (i === 4)
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return [t, p, v];
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if (i === 5)
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return [v, p, q];
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},
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generateColor:function(){
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this.CURRENT_RATIO = this.CURRENT_RATIO+this.GOLDEN_RATIO;
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this.CURRENT_RATIO = this.CURRENT_RATIO %= 1;
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HSV_tuple = [this.CURRENT_RATIO, this.HSV_1, this.HSV_2];
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RGB_tuple = this._hsvToRgb(HSV_tuple[0],HSV_tuple[1],HSV_tuple[2]);
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function toRgb(v){
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return ""+parseInt(v*256);
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}
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return [toRgb(RGB_tuple[0]),toRgb(RGB_tuple[1]),toRgb(RGB_tuple[2])];
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}
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};
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