Function rgbToHsl

src/tweenjs/plugins/ColorPlugin.js:212–232

(o)

	};
	
	function rgbToHsl(o) {
		var r=o[0], g=o[1], b=o[2], m = 1/255;
		r *= m, g *= m, b *= m;
		// TODO: Math.max/min are pretty slow vs conditional assignment
		var max = Math.max(r, g, b), min = Math.min(r, g, b);
		var h, s, l = (max + min) * 0.5;

		if (max === min) {
			h = s = 0; // achromatic
		} else {
			var d = max - min;
			s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
			if (max === r) { h = (g - b) / d + (g < b ? 6 : 0); }
			else if (max === g) { h = (b - r) / d + 2; }
			else { h = (r - g) / d + 4; }
			h /= 6;
		}
		o[0] = h*360;
		o[1] = s*100;
		o[2] = l*100;
	}

	function hslToRgb(o) {
		var h=(o[0]%360)/360, s=o[1]/100, l=o[2]/100;