Imagick::fxImage

(PECL imagick 2.0.0)

Imagick::fxImageEvaluate expression for each pixel in the image

Descrição

Imagick::fxImage ( string $expression [, int $channel = Imagick::CHANNEL_DEFAULT ] ) : Imagick

Evaluate expression for each pixel in the image. Consult » The Fx Special Effects Image Operator for more information.

Parâmetros

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.

Valor Retornado

Retorna TRUE no sucesso.

Erros

Lança ImagickException em caso de erro.

Exemplos

Exemplo #1 Imagick::fxImage()

<?php
function fxImage() {
    
$imagick = new \Imagick();
    
$imagick->newPseudoImage(200200"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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