Gmagick::cropimage()
(PECL gmagick >= Unknown)
Extracts a region of the image
说明
public Gmagick::cropimage(int $width,int $height,int $x,int $y): Gmagick
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
The cropped Gmagick object
错误/异常
错误时抛出GmagickException。
A slight note since this is not immediately obvious: Just as the C CropImage() function, you can specify all zero parameters to get an "autocrop" effect, meaning it will remove all single-color "edges" of an image.