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Refactor the color module

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Arne Schlüter 2015-02-08 09:58:07 +01:00
commit 2229d548b5
3 changed files with 31 additions and 12 deletions
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37
static/js/colors.js
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@ -1,18 +1,37 @@
export default function mixColors (colors) {
var rgb = colors.map(function (color) {
var colorUtils = {
/**
* Converts a hex string to RGB
* @param {String} color A string in six digit hex format
* @return {Array[Number]} An array of 3 integers which are the red,
* green and blue values
*/
hexToRGB: function toRGB (color) {
var r = color.substr(1, 2)
, g = color.substr(3, 2)
, b = color.substr(5, 2);
return [parseInt(r, 16), parseInt(g, 16), parseInt(b, 16)];
});
},
var result = [ 0, 0, 0 ];
for (var i = 0, l = rgb.length; i < l; i++) {
result[0] += rgb[i][0] / l;
result[1] += rgb[i][1] / l;
result[2] += rgb[i][2] / l;
/**
* Mixes an arbitrary amount of colors linearly
* @param {Array[String]} colors Different colors as hex string
* @return {String} The mixed color as hex string
*/
mix: function mixColors (colors) {
var rgb = colors.map(colorUtils.hexToRGB);
var result = [ 0, 0, 0 ];
for (var i = 0, l = rgb.length; i < l; i++) {
result[0] += rgb[i][0] / l;
result[1] += rgb[i][1] / l;
result[2] += rgb[i][2] / l;
}
return '#' + result[0].toString(16) + result[1].toString(16) + result[2].toString(16);
}
return '#' + result[0].toString(16) + result[1].toString(16) + result[2].toString(16);
}
export default colorUtils;