Imagick::importImagePixels
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Imagick::importImagePixels — Imports image pixels
说明
$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
/* Generate array of pixels. 2000 pixels per color stripe */
$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 and height. The area is amount of pixels divided
by three. Three comes from 'RGB', three values per pixel */
$width = $height = pow((count($pixels) / 3), 0.5);
/* Create empty image */
$im = new Imagick();
$im->newImage($width, $height, 'gray');
/* Import the pixels into image.
width * height * strlen("RGB") must match count($pixels) */
$im->importImagePixels(0, 0, $width, $height, "RGB", Imagick::PIXEL_CHAR, $pixels);
/* output as jpeg image */
$im->setImageFormat('jpg');
header("Content-Type: image/jpg");
echo $im;
?>
以上例程的输出类似于：
