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On Tue, 01 Dec 1998 14:49:36 -0500, Nathan Kopp <Nat### [at] Kopp com>
wrote:
>=========================
>Prism bug
>=========================
> thread: "Potential render bug in POV"
> bug: Ghost line appears sometimes when rendering a prism. The
> cause has not been determined. Note, the example given
> is not very good, but all objects except the prism can be
> removed from the scene and the bug remains.
> fix: unknown
This one was reported during the 3.0 beta period, in case it
matters (it doesn't.) I have a scene somewhere that duplicates
it quite noticeably. The problem appears to occur when the
insideness-testing algorithm intersects exactly at a vertex.
I haven't found the exact fix yet, despite years of trying.
>=========================================
>Large EPSILON value in Windows CONFIG.INI
>=========================================
> thread: -
> bug: CONFIG.INI in DOS and Windows sets EPSILON to 10e-5, which
> causes all sorts of problems when rendering very small or very
> large objects.
> fix: Change EPSILON to something smaller, like 10e-12
For the sphere scaling bug, at least, someone else suggested a better
fix that adapts to smaller-sized objects without the side-effects of
modifying EPSILON indiscriminately. Also, you meant config.h. :)
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