| public equal ( string | Grafika\ImageInterface $image1, string | Grafika\ImageInterface $image2 ) : boolean | ||
| $image1 | string | Grafika\ImageInterface | Can be an instance of Image or string containing the file system path to image. |
| $image2 | string | Grafika\ImageInterface | Can be an instance of Image or string containing the file system path to image. |
| return | boolean | True if equals false if not. Note: This breaks the chain if you are doing fluent api calls as it does not return an Editor. |
public function equal($image1, $image2)
{
if (is_string($image1)) {
// If string passed, turn it into a Image object
$image1 = Image::createFromFile($image1);
$this->flatten($image1);
}
if (is_string($image2)) {
// If string passed, turn it into a Image object
$image2 = Image::createFromFile($image2);
$this->flatten($image2);
}
// Check if image dimensions are equal
if ($image1->getWidth() !== $image2->getWidth() or $image1->getHeight() !== $image2->getHeight()) {
return false;
} else {
// Loop using image1
$pixelIterator = $image1->getCore()->getPixelIterator();
foreach ($pixelIterator as $row => $pixels) {
/* Loop through pixel rows */
foreach ($pixels as $column => $pixel) {
/* Loop through the pixels in the row (columns) */
/**
* Get image1 pixel
* @var $pixel \ImagickPixel
*/
$rgba1 = $pixel->getColor();
// Get image2 pixel
$rgba2 = $image2->getCore()->getImagePixelColor($column, $row)->getColor();
// Compare pixel value
if ($rgba1['r'] !== $rgba2['r'] or $rgba1['g'] !== $rgba2['g'] or $rgba1['b'] !== $rgba2['b']) {
return false;
}
}
$pixelIterator->syncIterator();
/* Sync the iterator, this is important to do on each iteration */
}
}
return true;
}