Php/docs/imagickpixel.setcolorvaluequantum
ImagickPixel::setColorValueQuantum
(PECL imagick 2 >=2.3.0, PECL imagick 3)
ImagickPixel::setColorValueQuantum — Description
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()
<?phpfunction 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();}?>
