On 3/11/23 16:01, Bald Eagle wrote:
> Anyone have any ideas?
I'm in the middle of another code tangle, but...
After the lemon was added and we started to bang on it, a few numerical
issues turned up. I think most of this was discussed for a time on the
developer mailing list. No idea what is fixed. What might github have...
Looks like https://github.com/POV-Ray/povray/pull/358 has a little on
the lemon if you scroll down through the comments. Well, I suppose not
would help you near term of that work in any case.
A reminder the f_torus inbuilt function implements a couple of the
spindle modes though it is not directly documented anywhere that I know
about. See post to povray.binaries.images
Subject: Some v38 torus vs f_torus() information.
Date: 30 Apr 2020 08:32:29
Running your scene with my current development povr code, and without
sturm(a), I get the attached a result.
(a) - With sturm on I get a tiny nub on the ends bringing the height to
to about where the left and right shapes are. Without it it 'looks' like
the shape is a little more rounded at the ends than your equivalents.
Might be there is still some other numerical stuff going on... It's not
the easiest shape for the solvers.
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