titanscssc::scale_color_helper PHP Method

    protected function scale_color_helper($base, $scale, $i)
    {
        // 1,2,3 - rgb
        // 4, 5, 6 - hsl
        // 7 - a
        switch ($i) {
            case 1:
            case 2:
            case 3:
                $max = 255;
                break;
            case 4:
                $max = 360;
                break;
            case 7:
                $max = 1;
                break;
            default:
                $max = 100;
        }
        $scale = $scale / 100;
        if ($scale < 0) {
            return $base * $scale + $base;
        } else {
            return ($max - $base) * $scale + $base;
        }
    }