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Thomas wrote:
>
> Hi Christoph,
>
> That looks very good, I always wondered whether something like that was
> possible in pov. Would you mind posting the code?
>
> Regards,
>
> Thomas
>
Is in p.t.s-f.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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Jerry wrote:
>
> It wasn't designed as a general-purpose macro, but there was aa good
> example of making it snow posted to comp.g.r.r a year or so ago. I used
> it on the image at http://www.hoboes.com/jerry/Gallery/Christmas.shtml
>
> It's very christmas-card like, so might not be what you want. But I can
> dig up the code if you want.
>
That looks like something completely different, but it would be
interesting anyway.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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In article <3A236554.C7F5B018@gmx.de>, Christoph Hormann
<chr### [at] gmxde> wrote:
> I don't think completely random would be good, but some 'jitter' could
> probably help.
I've been getting good results with completely random snow...why do you
think it would be a problem?
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Chris Huff wrote:
>
> I've been getting good results with completely random snow...why do you
> think it would be a problem?
>
I have not tried it yet, but i thought it would need too many blob
components to fill up all holes.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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Christoph Hormann wrote:
>
> Just thought it's about time to start the winter season, the first
> christmas trees are also being grown, so here is some fresh snow...
Looks pretty good, but it needs radiosity or something.. snow just
doesn't look right without a ton of skylight in the shadows. ^_-
-Xplo
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In article <3A24299D.80382AB5@gmx.de>, Christoph Hormann
<chr### [at] gmxde> wrote:
> I have not tried it yet, but i thought it would need too many blob
> components to fill up all holes.
Depends...I went as high as 50000 components with no trouble for a
simple scene I am doing, and I am now using 20000. I haven't tried a
grid formation yet.
I think random placement gives better looking results, though a bit
lumpier, right now my biggest problem is getting it not to overhang
edges too much.
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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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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Chris Huff wrote:
>
> 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.
>
That's exactly what i started too, but i did not yet have time to work
enough on it (just got a few funny 'melting ice cream' pictures until
now).
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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Neat! A 10-day photorealistic version with rad and all that would really be
cool...
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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This might be a good use for a perticle system...
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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