Le_Forgeron <lef### [at] freefr> wrote:
> Le 13/12/2013 11:55, Roman a écrit :
> > Hi there,
> >
> > The minimal scene file below should produce identical images for any
> > value of the scaling factor s, but it doesn't. s=1e-1 works fine, s=1e-3
> > produces individual spheres instead of a sweep, and s=1e-5 makes the
> > object fully invisible. The code for sphere_sweep doesn't seem to scale.
> >
> > Using other values for the sphere_sweep tolerance and turning off the
> > bounding (-MB) doesn't solve the problem.
> >
> > This might be related to http://bugs.povray.org/task/81, as I'm getting
> > the artifacts described there as well for intermediate scaling factors,
> > but the problems described here appear to be much more severe.
> >
> > I'm using POV-Ray 3.7 on OpenSUSE 12.2.
> >
>
> It is not related to 81, but 297
>
> http://bugs.povray.org/task/297
>
> (81 is about artefact (noise) in solver, whereas 297 is about epsilon)
>
> A lot of shapes would not scale either. That's 297.
>
> --

Me again! After some reading I think the problem is related to problem #243 for
pov3.7 and 92 for Pov3.6. A too little scale make artifacts. No solution with
SDL. I have tested the file *.pov from #243 with Pov3.6 and 3.7 and the two
differents artifacts appears.
I maybe will try with UberPov, but it is actually buzy in work.

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