Php/docs/imagick.tintimage

• PHP Manual
• Imagick
• Applies a color vector to each pixel in the image

Imagick::tintImage

(PECL imagick 2, PECL imagick 3)

Imagick::tintImage — Applies a color vector to each pixel in the image

说明

public Imagick::tintImage ( mixed $tint , mixed $opacity [, bool $legacy = false ] ) : bool

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)))).

参数

tint

opacity

返回值

成功时返回 true。

错误／异常

错误时抛出 ImagickException。

更新日志

版本	说明
PECL imagick 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.

范例

Example #1 Imagick::tintImage()

<?phpfunction 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();}?>