protected function drawPixel()
    {
        $pixelColor = imagecolorallocate($this->image, mt_rand(0, 255), mt_rand(100, 255), mt_rand(50, 255));

        for($i = 0; $i< mt_rand(1000, 1800); $i++)
        {
            imagesetpixel($this->image, mt_rand() % $this->width, mt_rand() % $this->height, $pixelColor);
        }
    }