public function apply($image)
{
$pixels = array();
$finalPx = array();
// Localize vars
$width = $image->getWidth();
$height = $image->getHeight();
// Loop
$pixelIterator = $image->getCore()->getPixelIterator();
foreach ($pixelIterator as $y => $rows) {
/* Loop through pixel rows */
foreach ($rows as $x => $px) {
/* Loop through the pixels in the row (columns) */
// row 0
if ($x > 0 and $y > 0) {
$matrix[0][0] = $this->getColor($px, $pixels, $x - 1, $y - 1);
} else {
$matrix[0][0] = $this->getColor($px, $pixels, $x, $y);
}
if ($y > 0) {
$matrix[1][0] = $this->getColor($px, $pixels, $x, $y - 1);
} else {
$matrix[1][0] = $this->getColor($px, $pixels, $x, $y);
}
if ($x + 1 < $width and $y > 0) {
$matrix[2][0] = $this->getColor($px, $pixels, $x + 1, $y - 1);
} else {
$matrix[2][0] = $this->getColor($px, $pixels, $x, $y);
}
// row 1
if ($x > 0) {
$matrix[0][1] = $this->getColor($px, $pixels, $x - 1, $y);
} else {
$matrix[0][1] = $this->getColor($px, $pixels, $x, $y);
}
if ($x + 1 < $width) {
$matrix[2][1] = $this->getColor($px, $pixels, $x + 1, $y);
} else {
$matrix[2][1] = $this->getColor($px, $pixels, $x, $y);
}
// row 1
if ($x > 0 and $y + 1 < $height) {
$matrix[0][2] = $this->getColor($px, $pixels, $x - 1, $y + 1);
} else {
$matrix[0][2] = $this->getColor($px, $pixels, $x, $y);
}
if ($y + 1 < $height) {
$matrix[1][2] = $this->getColor($px, $pixels, $x, $y + 1);
} else {
$matrix[1][2] = $this->getColor($px, $pixels, $x, $y);
}
if ($x + 1 < $width and $y + 1 < $height) {
$matrix[2][2] = $this->getColor($px, $pixels, $x + 1, $y + 1);
} else {
$matrix[2][2] = $this->getColor($px, $pixels, $x, $y);
}
$edge = $this->convolve($matrix);
$edge = intval($edge / 2);
if ($edge > 255) {
$edge = 255;
}
/**
* @var \ImagickPixel $px Current pixel.
*/
$finalPx[] = $edge;
// R
$finalPx[] = $edge;
// G
$finalPx[] = $edge;
// B
}
$pixelIterator->syncIterator();
/* Sync the iterator, this is important to do on each iteration */
}
$new = new \Imagick();
$new->newImage($width, $height, new \ImagickPixel('black'));
/* Import the pixels into image.
width * height * strlen("RGB") must match count($pixels) */
$new->importImagePixels(0, 0, $width, $height, "RGB", \Imagick::PIXEL_CHAR, $finalPx);
$type = $image->getType();
$file = $image->getImageFile();
return new Image($new, $file, $width, $height, $type);
// Create new image with updated core
}
