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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PECL imagick 2.0.0)
Imagick::tintImage — Applies a color vector to each pixel in the image
$tint
, mixed $opacity
)Applies a color vector to each pixel in the image. The length of the vector is 0 for black and white and at its maximum for the midtones. The vector weighing function is f(x)=(1-(4.0*((x-0.5)*(x-0.5)))).
tint
opacity
成功时返回 TRUE
。
错误时抛出 ImagickException。
版本 | 说明 |
---|---|
2.1.0 | Now allows a string representing the color as the first parameter and a float representing the opacity value as the second parameter. Previous versions allow only an ImagickPixel objects. |
Example #1 Imagick::tintImage()
<?php
function tintImage ( $r , $g , $b , $a ) {
$a = $a / 100 ;
$imagick = new \ Imagick ();
$imagick -> newPseudoImage ( 400 , 400 , 'gradient:black-white' );
$tint = new \ ImagickPixel ( "rgb( $r , $g , $b )" );
$opacity = new \ ImagickPixel ( "rgb(128, 128, 128, $a )" );
$imagick -> tintImage ( $tint , $opacity );
$imagick -> setImageFormat ( 'png' );
header ( "Content-Type: image/png" );
echo $imagick -> getImageBlob ();
}
?>