POV-Ray : Newsgroups : povray.binaries.images : Die, cast : Re: Die, cast Server Time
31 Jul 2024 00:35:25 EDT (-0400)
  Re: Die, cast  
From: clipka
Date: 23 Feb 2011 22:14:51
Message: <4d65cd2b$1@news.povray.org>
Am 23.02.2011 23:14, schrieb Robert McGregor:
> I've noticed a weird X-pattern on superellipsoid faces with SSLT in RC3, just
> wondering if you get the same thing with the new method.
>
> Here's an image that illustrates what I mean - the left superellipsoid has the
> X-pattern (like triangular faces with non-planar normals), the right
> superellipsoid is the exact same but with no SSLT and using reflection&
> transmit instead, but it looks as expected.

Did you use radiosity for those images? If so, can you try again without 
radiosity?

If it appears only when radiosity is enabled, chances are it will be 
fixed with the next release.

Otherwise there might be some distance threshold hidden in the 
superellipsoid intersection testing code; SSLT is quite sensitive to 
such things, as it needs to shoot rays from just slightly below the 
surface. I know that blobs have such issues, for instance. To really fix 
that, I'd need to do some changes deep in the bowels of POV-Ray - which 
of course is a no-go during release candidate phase.


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