ImagickPixel::setColorValue

(PECL imagick 2.0.0)

Sets the normalized value of one of the channels

bool ImagickPixel::setColorValue ( int $color, float $value )

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.

Returns:

Returns TRUE on success.

Examples:

Basic Imagick::setColorValue() usage

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

The above example will output:

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

Links:

http://php.net/manual/en/imagickpixel.setcolorvalue.php

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2025-01-10 15:47:30

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