pixel-editor/_ext/scripts/utilities/hslToRgb.js

32 lines
745 B
JavaScript
Raw Normal View History

2019-03-27 02:20:54 +03:00
function hslToRgb(h, s, l){
h /= 255;
s /= 255;
l /= 255;
var r, g, b;
if(s == 0){
r = g = b = l; // achromatic
}else{
var hue2rgb = function hue2rgb(p, q, t){
if(t < 0) t += 1;
if(t > 1) t -= 1;
if(t < 1/6) return p + (q - p) * 6 * t;
if(t < 1/2) return q;
if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
return p;
}
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = hue2rgb(p, q, h + 1/3);
g = hue2rgb(p, q, h);
b = hue2rgb(p, q, h - 1/3);
}
return {
r:Math.round(r * 255),
g:Math.round(g * 255),
b:Math.round(b * 255)
};
}