hsv2rgb for libGDX

hsv2rgb.java

private final static float ONE_THIRD = 1/3f;
private final static float TWO_THIRDS = 2/3f;

/**
 * Converts a vector of hue, saturation, and value into a vector of red, green, and blue
 *
 * @param hsv {@code com.badlogic.gdx.Vector3}, X set to hue (0-360), Y to saturation (0-1), and Z to value (0-1)
 * @return {@code com.badlogic.gdx.Color}
 */
private Color hsv2rgb(Vector3 hsv) {
  final Vector3 precompute = new Vector3(1, 1, 1).lerp(new Vector3(
    (float)Math.abs((((hsv.x + 1) - Math.floor(hsv.x + 1)) * 6) - 3) - 1,
    (float)Math.abs((((hsv.x + TWO_THIRDS) - Math.floor(hsv.x + TWO_THIRDS)) * 6) - 3) - 1,
    (float)Math.abs((((hsv.x + ONE_THIRD) - Math.floor(hsv.x + ONE_THIRD)) * 6) - 3) - 1
  ).clamp(0f, 1f), hsv.y).scl(hsv.z);
  return new Color(precompute.x, precompute.y, precompute.z, 1f);
}