futtta / autoptimize

     * ---------------------------------------------------------------------------------------------

     */

    private function hue_to_rgb($v1, $v2, $vh)

    {

        $vh = $vh < 0 ? $vh + 1 : ($vh > 1 ? $vh - 1 : $vh);

        if ($vh * 6 < 1) return $v1 + ($v2 - $v1) * 6 * $vh;

        if ($vh * 2 < 1) return $v2;

        if ($vh * 3 < 2) return $v1 + ($v2 - $v1) * ((2/3) - $vh) * 6;

        return $v1;

    }

    private function round_number($n)

    {

     * @param $vh

     * @return mixed

     */

    private function hueToRgb($v1, $v2, $vh)

    {

        $vh = $vh < 0 ? $vh + 1 : ($vh > 1 ? $vh - 1 : $vh);

        if ($vh * 6 < 1) {

            return $v1 + ($v2 - $v1) * 6 * $vh;

        }

        if ($vh * 2 < 1) {

            return $v2;

        }

        if ($vh * 3 < 2) {

            return $v1 + ($v2 - $v1) * ((2 / 3) - $vh) * 6;

        }

        return $v1;

    }

    /**

     * PHP port of Javascript's "indexOf" function for strings only