GmagickPixel::getcolorvalue
(PECL gmagick >= Unknown)
GmagickPixel::getcolorvalue — Gets the normalized value of the provided color channel
Description
public GmagickPixel::getcolorvalue ( int $color ) : float
Retrieves the value of the color channel specified, as a floating-point number between 0 and 1.
Parameters
-
color -
The channel to check, specified as one of the Gmagick channel constants.
Return Values
The value of the channel, as a normalized floating-point number, throwing GmagickPixelException on error.
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https://www.php.net/manual/en/gmagickpixel.getcolorvalue.php