(PECL imagick 2, PECL imagick 3)
Imagick::fxImage — Evaluate expression for each pixel in the image
Evaluate expression for each pixel in the image. Consult ? The Fx Special Effects Image Operator for more information.
expressionThe expression.
channelProvide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
成功時(shí)返回 true。
錯誤時(shí)拋出 ImagickException。
示例 #1 Imagick::fxImage()
<?php
function fxImage() {
$imagick = new \Imagick();
$imagick->newPseudoImage(200, 200, "xc:white");
$fx = 'xx=i-w/2; yy=j-h/2; rr=hypot(xx,yy); (.5-rr/140)*1.2+.5';
$fxImage = $imagick->fxImage($fx);
header("Content-Type: image/png");
$fxImage->setimageformat('png');
echo $fxImage->getImageBlob();
}
?>