ImagickPixel::setColorValue

(PECL imagick 2, PECL imagick 3)

ImagickPixel::setColorValue — Sets the normalized value of one of the channels

Description

Sets the value of the specified channel of this object to the provided value, which should be between 0 and 1. This function can be used to provide an opacity channel to an ImagickPixel object.

Parameters

color

One of the Imagick color constants e.g. \Imagick::COLOR_GREEN or \Imagick::COLOR_ALPHA.

value

The value to set this channel to, ranging from 0 to 1.

Return Values

Returns true on success.

Examples

<?php
$color = new \ImagickPixel('firebrick');
$color->setColorValue(Imagick::COLOR_ALPHA, 0.5);
print_r($color->getcolor(true));
?>

Array
(
 [r] => 0.69803921568627
 [g] => 0.13333333333333
 [b] => 0.13333333333333
 [a] => 0.50000762951095
)