Imagick::cropImage

(PECL imagick 2.0.0)

Imagick::cropImage — Extracts a region of the image

Description

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

Extracts a region of the image.

Parameters

width: The width of the crop
height: The height of the crop
x: The X coordinate of the cropped region's top left corner
y: The Y coordinate of the cropped region's top left corner

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Коментарии

Apr 09

Автор: Christian Dehning


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);

2010-04-09 06:57:52

http://php5.kiev.ua/manual/ru/imagick.cropimage.html

Nov 05

Автор: ElPadre


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...).

2010-11-05 10:55:40

http://php5.kiev.ua/manual/ru/imagick.cropimage.html

Apr 13

Автор: oxxido at gmail dot com


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.

2015-04-13 20:58:24

http://php5.kiev.ua/manual/ru/imagick.cropimage.html

Mar 30

Автор: olav at schettler dot net


Here is a simple function to create a thumbnail. It accepts an additional parameter to set the focus point of the generated thumbnail:



<?php

function thumbnail($image, $new_w, $new_h, $focus = 'center')

{

    $w = $image->getImageWidth();

    $h = $image->getImageHeight();



    if ($w > $h) {

        $resize_w = $w * $new_h / $h;

        $resize_h = $new_h;

    }

    else {

        $resize_w = $new_w;

        $resize_h = $h * $new_w / $w;

    }

    $image->resizeImage($resize_w, $resize_h, Imagick::FILTER_LANCZOS, 0.9);



    switch ($focus) {

        case 'northwest':

            $image->cropImage($new_w, $new_h, 0, 0);

            break;



        case 'center':

            $image->cropImage($new_w, $new_h, ($resize_w - $new_w) / 2, ($resize_h - $new_h) / 2);

            break;



        case 'northeast':

            $image->cropImage($new_w, $new_h, $resize_w - $new_w, 0);

            break;



        case 'southwest':

            $image->cropImage($new_w, $new_h, 0, $resize_h - $new_h);

            break;



        case 'southeast':

            $image->cropImage($new_w, $new_h, $resize_w - $new_w, $resize_h - $new_h);

            break;

    }

}

?>