> Any hints or suggestions would be appreciated.

There have been several attempts at this in the past. One way to go is to
use the object for an image-pattern, and average dozens of these with
slightly randomized translations. What you get is a pattern which is white
where the object is, black outside, and a grayscale on edges of the object.
With some work, this could probably end up into something you'd like to
achieve. I'm not sure what to search for in the newsgroups though, but
someone will surely come to aid. :-)

Regards,
Tim

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>

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