(PECL imagick 2 >=2.3.0, PECL imagick 3)
ImagickPixel::setColorValueQuantum — Description
$color
, int|float $value
) : boolSets the quantum value of a color element of the ImagickPixel.
本函数还未编写文档，仅有参数列表。
colorWhich color element to set e.g. \Imagick::COLOR_GREEN.
valueThe 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().
成功时返回 true。
Example #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();
}
?>