GmagickPixel::getcolorvalue

    (PECL gmagick >= Unknown)

    GmagickPixel::getcolorvalue — Gets the normalized value of the provided color channel

    说明

    public GmagickPixel::getcolorvalue(int $color): float

    Retrieves the value of the color channel specified, as a floating-point number between 0 and 1.

    参数

    color

    The channel to check, specified as one of the Gmagick channel constants.

    返回值

    The value of the channel, as a normalized floating-point number, throwing GmagickPixelException on error.

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