Imagick::cropImage

(PECL imagick 2.0.0)

Imagick::cropImageExtrae una región de la imagen

Descripción

bool Imagick::cropImage ( int $width , int $height , int $x , int $y )

Extrae una región de la imagen.

Parámetros

width

El ancho del recorte

height

El alto del recorte

x

La coordenada X de la esquina superior izquierda de la región recortada

y

La coordenada Y de la esquina superior izquierda de la región recortada

Valores devueltos

Devuelve TRUE en caso de éxito.

Errores/Excepciones

Lanza ImagickException en caso de error.

Ejemplos

Ejemplo #1 Imagick::cropImage()

<?php
function cropImage($imagePath$startX$startY$width$height) {
    
$imagick = new \Imagick(realpath($imagePath));
    
$imagick->cropImage($width$height$startX$startY);
    
header("Content-Type: image/jpg");
    echo 
$imagick->getImageBlob();
}

?>

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User Contributed Notes 4 notes

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3
Christian Dehning
5 years ago
When cropping gif-images (I had no problems with jpg and png images), the canvas is not removed. Please run the following command on the cropped gif, to remove the blank space:

$im->setImagePage(0, 0, 0, 0);
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1
ElPadre
4 years ago
Actually, the Imagick::setImagePage(0,0,0,0) is also handy with jpgs and pngs, if you plan to do any more changes on the cropped image that involves positioning and/or gravity (I created a script that does crop, face blur and watermarking in one go, and had a hell of a time determining why the blurs and the watermark text never showed up...).
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0
oxxido at gmail dot com
4 months ago
I have a function that takes an image, resize and crop it, and save it as normal, then resize it again and crop it again to create the thumbnail. The numbers of the second crop were WAY off, and the calculations were perfect, the problem, was the second crop wasn't resetting the imagePage, so if you try to crop the same image twice, it will be a good idea to reset it first:
<?php
$thumb
= new Imagick($file)
$thumb->resizeImage($r_w1,$r_h1,Imagick::FILTER_CATROM,0.9, false);
$thumb->cropImage($w1,$h1,$l1,$t1);
$thumb->writeImage($destinationPath.'/'.$fileName);

$thumb->resizeImage($r_w2,$r_h2,Imagick::FILTER_CATROM,0.9, false);
$thumb->setImagePage(0, 0, 0, 0);
$thumb->cropImage($w2,$h2,$l2,$t2);
$thumb->writeImage($destinationPath.'/'.$fileNameThumb);

?>

BTW, i needed perfect dimentions so i had to set the "bestfit" to false.
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-32
vincent dot hoen at gmail dot com
8 years ago
There is an easiest way to crop an image : 

$picture = new Imagick('animated_gif.gif');

foreach($picture as $frame){
    $frame->cropImage($width, $height, $x, $y);
}
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