Function hueToRgba

src/framework/stdlib/src/color.ts:51–75

(p: number, q: number, tp: number)

 * Converts a color value from HSL to RGBA.
 */
const hueToRgba = (p: number, q: number, tp: number) => {
  let t = tp;

  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;
};

const round = (n: number) => {
  return Math.round(n * 100) / 100;