ImagickPixel::setColorValueQuantum

(PECL imagick 2 >=2.3.0, PECL imagick 3)

ImagickPixel::setColorValueQuantum — Sets the quantum value of a color element of the ImagickPixel

说明

public ImagickPixel::setColorValueQuantum(int $color, int|float $value): bool

Sets the quantum value of a color element of the ImagickPixel.

警告

本函数还未编写文档，仅有参数列表。

参数

color: Which color element to set e.g. \Imagick::COLOR_GREEN.
value: The quantum value to set the color element to. This should be a float if ImageMagick was compiled with HDRI otherwise an int in the range 0 to Imagick::getQuantum().

返回值

成功时返回 true。

示例

示例 #1 ImagickPixel::setColorValueQuantum()

<?php
function setColorValueQuantum() {
    $image = new \Imagick();

    $quantumRange = $image->getQuantumRange();

    $draw = new \ImagickDraw();
    $color = new \ImagickPixel('blue');
    $color->setcolorValueQuantum(\Imagick::COLOR_RED, 128 * $quantumRange['quantumRangeLong'] / 256);

    $draw->setstrokewidth(1.0);
    $draw->setStrokeColor($color);
    $draw->setFillColor($color);
    $draw->rectangle(200, 200, 300, 300);

    $image->newImage(500, 500, "SteelBlue2");
    $image->setImageFormat("png");

    $image->drawImage($draw);

    header("Content-Type: image/png");
    echo $image->getImageBlob();
}

?>