(PECL imagick 2.0.0)
Imagick::negateImage — Negates the colors in the reference image
$gray
[, int $channel
= Imagick::CHANNEL_DEFAULT
] ) : boolNegates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.
gray
Whether to only negate grayscale pixels within the image.
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
锟缴癸拷时锟斤拷锟斤拷 TRUE
锟斤拷
锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷
Example #1 Imagick::negateImage()
<?php
function negateImage($imagePath, $grayOnly, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->negateImage($grayOnly, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>