HSVsplitter

/*
 * original script from -
 * http://www.openshading.com/osl/example-shaders/
 * New/3-clause BSD" license
 */
shader HSVSplitter
[[  string help = "Splits the RGB input into HSV Outputs",
    string label = "HSV Splitter" ]]
(
    color Color = 0.8,
    output float H = 0.0,
    output float S = 0.0,
    output float V = 0.0)
{
    color HSV = transformc("hsv", Color);
    H = HSV[0];
    S = HSV[1];
    V = HSV[2];
}