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"Mike" <inf### [at] mydis org> wrote:
> hi, I keep getting little artifacts when rendering long sphere sweeps. Any
> ideas/suggestions?
>
I've run into the same problem before...little specs or blobs far outside
the sphere sweeps. Never did come up with an understanding of, or a
solution to, the problem. The only thing that does seem to work --and
you've no doubt discovered it -- it to use shorter sphere sweeps. But they
can be attached "end to end" to create a longer sphere sweep that, somehow,
doesn't exhibit the artifacts. Awhile back, I posted an image in binaries:
images of ivy and vines on a tree, and near the end of the discussion,
Alain suggested this trick (for a different reason, having to do with
reducing the rendering times.) He explained it quite
well, so here's the link...
http://news.povray.org/povray.binaries.images/thread/%3Cweb.43cf3b13e1be95c0dbcfc3c90%40news.povray.org%3E/
Ken W.
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