php教程

Imagick::liquidRescaleImage

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Imagick::liquidRescaleImageAnimates an image or images

说明

Imagick::liquidRescaleImage ( int $width , int $height , float $delta_x , float $rigidity ) : bool

This method scales the images using liquid rescaling method. This method is an implementation of a technique called seam carving. In order for this method to work as expected ImageMagick must be compiled with liblqr support. 此方法在Imagick基于ImageMagick 6.3.9以上版本编译时可用。

参数

width

The width of the target size

height

The height of the target size

delta_x

How much the seam can traverse on x-axis. Passing 0 causes the seams to be straight.

rigidity

Introduces a bias for non-straight seams. This parameter is typically 0.

返回值

成功时返回 TRUE

参见

User Contributed Notes

spider at man dot net 20-Nov-2011 11:00
<?php
    
   
/* Create new object */
   
$im = new Imagick( 'test.jpg' );
    
   
/* Scale down */
   
$im->liquidRescaleImage( 500, 200, 3, 25 );
    
   
/* Display */
   
header( 'Content-Type: image/jpg' );
    echo
$im;
    
   
?>

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