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  • GmagickPixel::getcolorvalue()

    (PECL gmagick >= Unknown)

    Gets the normalized value of the provided color channel

    说明

    publicGmagickPixel::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.