Imagick::negateImage

(PECL imagick 2.0.0)

Imagick::negateImageNegates the colors in the reference image

说锟斤拷

Imagick::negateImage ( bool $gray [, int $channel = Imagick::CHANNEL_DEFAULT ] ) : bool

Negates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.

锟斤拷锟斤拷

gray

Whether to only negate grayscale pixels within the image.

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.

锟斤拷锟斤拷值

锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷

锟斤拷锟斤拷锟届常

锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷

锟斤拷锟斤拷

Example #1 Imagick::negateImage()

<?php
function negateImage($imagePath$grayOnly$channel) {
    
$imagick = new \Imagick(realpath($imagePath));
    
$imagick->negateImage($grayOnly$channel);
    
header("Content-Type: image/jpg");
    echo 
$imagick->getImageBlob();
}

?>