"Chaanakya" <nomail@nomail> wrote:
> clipka <ano### [at] anonymousorg> wrote:
> > Am 16.07.2012 21:21, schrieb Chaanakya:
> > > I'm not sure exactly where this bug lies, but pinning it on difference seems to
> > > be the most logical thing.  Here's some sample code:
> >
> > This is actually not really a bug, but merely a (currently) inevitable
> > limitation: When tracing a ray from some surface, POV-Ray must make sure
> > to ignore intersections with the very same or a coincident surface. To
> > be robust against rounding errors, it does this by comparing the
> > distance to the intersection with a certain minimum distance threshold.
> >
> > The threshold was changed during the development of 3.7 (I'm not sure
> > why though).
>
> What was the threshold in 3.6?  I think the threshold is on the order of 1e-6
> now if I'm not mistaken...

I found that it was changed (in 3.7) to 1e-4 - I changed it to 1e-9 to see if
that makes a difference.  I will report back.  Thanks for pointing me in that
direction!

- Chaanakya

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