Imagick::cropImage

(PECL imagick 2.0.0)

Imagick::cropImage — Extracts a region of the image

说明

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

Extracts a region of the image.

参数

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

返回值

成功时返回 TRUE .

错误/异常

错误时抛出 ImagickException .

PHP手册 - N: Extracts a region of the image

用户评论:

ElPadre (05-Nov-2010 04:55)

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...).

Christian Dehning (09-Apr-2010 11:57)

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);

vincent dot hoen at gmail dot com (02-Aug-2007 02:35)

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); }

vincent dot hoen at gmail dot com (01-Aug-2007 04:39)

If you're working with animated gif you might want to process this way (Probably not the best, but at least it works) : $picture = new Imagick('animated_gif.gif'); //Crop first image $picture->cropImage($width, $height, $x, $y); //Crop every other image while($picture->hasNextImage()){ $this->nextImage(); $this->cropImage($width, $height, $x, $y); } //display image $picture->getImageBlob();