Imagick::importImagePixels()

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Imports image pixels

说明

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

Imports pixels from an array into an image. The$mapis usually 'RGB'. This method imposes the following constraints for the parameters: amount of pixels in the array must match$widthx$heightx 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 exampleRGB. 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：