PHP Manual
GmagickPixel
Sets the normalized value of one of the channels

GmagickPixel::setcolorvalue

(PECL gmagick >= Unknown)

GmagickPixel::setcolorvalue — Sets the normalized value of one of the channels

说明

public GmagickPixel::setcolorvalue ( int $color , float $value ) : GmagickPixel

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 a GmagickPixel object.

参数

color: One of the Gmagick channel color constants.
value: The value to set this channel to, ranging from 0 to 1.

返回值

The GmagickPixel object on success.

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