Pop\Image\Imagick::overlay PHP 메소드

    public function overlay($ovr, $x = 0, $y = 0)
    {
        $overlayImage = new \Imagick($ovr);
        if ($this->opacity < 1) {
            $overlayImage->setImageOpacity($this->opacity);
        }
        $this->resource->compositeImage($overlayImage, $this->overlay, $x, $y);
        return $this;
    }