function retro(\ImagickDemo\Tutorial\Controls\RetroControls $retroControls)
{
    $imagick = new \Imagick();
    $imagick->newPseudoimage(640, 480, 'gradient:black-white');
    $imagick->setFormat('png');

    $first_line = $retroControls->getFirstLine();
    if (strlen(trim($first_line)) !== 0) {
        $draw = new \ImagickDraw();
        $draw->setFont("../fonts/CANDY.TTF");
        $draw->setFontSize(64);
        $draw->setFillColor('red');
        $draw->setStrokeColor('white');
        $draw->setStrokeWidth(3);
        $draw->annotation(20, 80, $first_line);
        $imagick->drawImage($draw);
    }

    $second_line = $retroControls->getSecondLine();
    if (strlen(trim($first_line)) !== 0) {
        $draw = new \ImagickDraw();
        $draw->setFont("../fonts/CANDY.TTF");
        $draw->setFontSize(64);
        $draw->setFillColor('red');
        $draw->setStrokeColor('white');
        $draw->setStrokeWidth(3);
        $draw->annotation(20, 280, $second_line);
        $imagick->drawImage($draw);
    }

    header("Content-Type: image/png");
    echo $imagick->getImageBlob();
}