(PECL imagick 2.0.0)
Evaluate expression for each pixel in the image
Imagick Imagick::fxImage ( string $expression [, int $channel = Imagick::CHANNEL_ALL ] )
Evaluate expression for each pixel in the image. Consult » The Fx Special Effects Image Operator for more information.
Parameters:
expression
The expression.
channel
Provide 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.
Returns:
Returns TRUE on success.
Exception:
Throws ImagickException on error.
Examples:
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();
}
?>
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