export function hsl()

in neopixel.ts [554:588]

• 34 lines of code
• 7 McCabe index (conditional complexity)

    export function hsl(h: number, s: number, l: number): number {
        h = Math.round(h);
        s = Math.round(s);
        l = Math.round(l);

        h = h % 360;
        s = Math.clamp(0, 99, s);
        l = Math.clamp(0, 99, l);
        let c = Math.idiv((((100 - Math.abs(2 * l - 100)) * s) << 8), 10000); //chroma, [0,255]
        let h1 = Math.idiv(h, 60);//[0,6]
        let h2 = Math.idiv((h - h1 * 60) * 256, 60);//[0,255]
        let temp = Math.abs((((h1 % 2) << 8) + h2) - 256);
        let x = (c * (256 - (temp))) >> 8;//[0,255], second largest component of this color
        let r$: number;
        let g$: number;
        let b$: number;
        if (h1 == 0) {
            r$ = c; g$ = x; b$ = 0;
        } else if (h1 == 1) {
            r$ = x; g$ = c; b$ = 0;
        } else if (h1 == 2) {
            r$ = 0; g$ = c; b$ = x;
        } else if (h1 == 3) {
            r$ = 0; g$ = x; b$ = c;
        } else if (h1 == 4) {
            r$ = x; g$ = 0; b$ = c;
        } else if (h1 == 5) {
            r$ = c; g$ = 0; b$ = x;
        }
        let m = Math.idiv((Math.idiv((l * 2 << 8), 100) - c), 2);
        let r = r$ + m;
        let g = g$ + m;
        let b = b$ + m;
        return packRGB(r, g, b);
    }