(No version information available, might be only in CVS)
ImagickPixel::setHSL — Sets the normalized HSL color
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Sets the color described by the ImagickPixel object using normalized values for hue, saturation and luminosity.
The normalized value for hue, described as a fractional arc (between 0 and 1) of the hue circle, where the zero value is red.
The normalized value for saturation, with 1 as full saturation.
The normalized value for luminosity, on a scale from black at 0 to white at 1, with the full HS value at 0.5 luminosity.
Returns TRUE on success.