GmagickPixel::setcolorvalue()
(PECL gmagick >= Unknown)
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.