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Imagick::tintImage

(PECL imagick 2, PECL imagick 3)

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

Beschreibung

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)))).

Parameter-Liste

tint

opacity

Rückgabewerte

Liefert true bei Erfolg.

Fehler/Exceptions

Wirft ImagickException bei Fehlern.

Changelog

Version Beschreibung
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.

Beispiele

Beispiel #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();
}

?>