ImagickPixel::setColorValueQuantum

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

ImagickPixel::setColorValueQuantumDescription

说明

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

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

Warning

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

范例

Example #1 ImagickPixel::setColorValueQuantum()

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

    
$quantumRange $image->getQuantumRange();

    
$draw = new \ImagickDraw();
    
$color = new \ImagickPixel('blue');
    
$color->setcolorValueQuantum(\Imagick::COLOR_RED128 $quantumRange['quantumRangeLong'] / 256);

    
$draw->setstrokewidth(1.0);
    
$draw->setStrokeColor($color);
    
$draw->setFillColor($color);
    
$draw->rectangle(200200300300);

    
$image->newImage(500500"SteelBlue2");
    
$image->setImageFormat("png");

    
$image->drawImage($draw);

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

?>

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