public function __construct()
{
parent::__construct(function (ImageInterface $image, Point $point) {
$color = $image->getColorAt($point);
$image->draw()->dot($point, new Color(array('red' => 255 - $color->getRed(), 'green' => 255 - $color->getGreen(), 'blue' => 255 - $color->getBlue())));
});
}
/**
* @param int $brightness the brightnes of the resulting image
* @throws \Imagine\Exception\InvalidArgumentException if $brightness < 0
*/
public function __construct($brightness = 1)
{
if ($brightness < 0) {
throw new InvalidArgumentException('Brightness has to be positive');
}
parent::__construct(function (ImageInterface $image, Point $point) use($brightness) {
$color = $image->getColorAt($point);
$image->draw()->dot($point, new Color(array('red' => min(255, $color->getRed() * $brightness), 'green' => min(255, $color->getGreen() * $brightness), 'blue' => min(255, $color->getBlue() * $brightness))));
});
}
/**
* Applies scheduled transformation to ImageInterface instance
* Returns processed ImageInterface instance
*
* @param \Imagine\Image\ImageInterface $image
*
* @return \Imagine\Image\ImageInterface
*/
public function apply(ImageInterface $image)
{
$grayscale = new Grayscale();
return parent::apply($grayscale->apply($image));
}
