In article <3A2369CC.60EF88B6@gmx.de>, Christoph Hormann 
<chr### [at] gmxde> wrote:

> > Isosurfaces!
> Or maybe blobs would also do for that.

Probably...you could even use trace() or eval_pattern() with the object 
pattern to place them automatically.


> As i said in the reply to Josh, that alone would not be that good, at
> least variation of the blob component size according to the normal of the
> objects would be necessary.

Hmm, yes...that is what my snow macro does. I will post a picture soon...


> I also think at some places like the 'N' in 'Snow' some 'surrounding
> observation' would be necessary to avoid the snow overlapping with the
> objects too much (right now i only use one 'trace' per component).  Maybe
> some components with negative strength could also help there.

I'm attempting to use 4 additional traces to determine if there is a 
sharp edge nearby and avoid placing flakes there. It is actually a bit 
similar to the depth-based find_edges post_process filter in concept, I 
am about to modify it to use the normal as well.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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