Imagick::importImagePixels

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Imagick::importImagePixels — Imports image pixels

说明

public bool Imagick::importImagePixels ( int $x , int $y , int $width , int $height , string $map , int $storage , array $pixels )

Imports pixels from an array into an image. The map is usually 'RGB'. This method imposes the following constraints for the parameters: amount of pixels in the array must match width x height x length of the map. 此方法在Imagick基于ImageMagick 6.4.5以上版本编译时可用。

参数

x: The image x position
y: The image y position
width: The image width
height: The image height
map: Map of pixel ordering as a string. This can be for example RGB. The value can be any combination or order of R = red, G = green, B = blue, A = alpha (0 is transparent), O = opacity (0 is opaque), C = cyan, Y = yellow, M = magenta, K = black, I = intensity (for grayscale), P = pad.
storage: The pixel storage method. Refer to this list of pixel constants.
pixels: The array of pixels

返回值

成功时返回 TRUE 。

错误／异常

错误时抛出 ImagickException。

范例

Example #1 Imagick::importImagePixels() example

  <?php

 
 $count  =  2000  *  3 ;

 $pixels  = 
    array_merge ( array_pad (array(),  $count ,  0 ),
                array_pad (array(),  $count ,  255 ), 
                array_pad (array(),  $count ,  0 ),
                array_pad (array(),  $count ,  255 ),
                array_pad (array(),  $count ,  0 ));

 
 $width  =  $height  =  pow (( count ( $pixels ) /  3 ),  0.5 );

 
 $im  = new  Imagick ();
 $im -> newImage ( $width ,  $height ,  'gray' );

 
 $im -> importImagePixels ( 0 ,  0 ,  $width ,  $height ,  "RGB" ,  Imagick :: PIXEL_CHAR ,  $pixels );

 
 $im -> setImageFormat ( 'jpg' );
 header ( "Content-Type: image/jpg" );
echo  $im ;

 ?>

以上例程的输出类似于：

Output of example : Imagick::importImagePixels()