"Zeger Knaepen" <zeg### [at] povplacecom> wrote:
> Cool, but you don't need the height_field, just use eval_pigment.  That way,
> you can use any pigment as a mask..

Aha, I knew *someone* out there would find a way to improve it (in this case,
both you and Thomas.) I'll have to try this--I've never used eval before.
Thanks for the code example.

Ken W.

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