Fixed up a little from previous post.
Now handles hue in the range -180 to 180 and
brightness and saturation in the range -1.0 to 1.0.

The former class HSVConverter is renamed to HSVForm.

The following doIt should get you started:

source _ Form fromFileNamed:'path/to/file'.
hf _ HSVForm hue:-180 saturation:0 brightness:-0.00.
dest _ Form extent: source extent depth: 32.
dest fill: dest boundingBox rule:3 fillColor: Color black.
(BitBlt
		destForm: dest
		sourceForm: source
		halftoneForm:  hf
		combinationRule: 39
		destOrigin: 0 @ 0
		sourceOrigin: 0 @ 0
		extent: s extent
		clipRect: s computeBoundingBox)copyBits.
(SketchMorph withForm: dest) openInWorld


Karl
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