POV-Ray: Newsgroups: povray.general: Subtle change in agate btw. 3.5->3.6?: Re: Subtle change in agate btw. 3.5->3.6?

POV-Ray : Newsgroups : povray.general : Subtle change in agate btw. 3.5->3.6? : Re: Subtle change in agate btw. 3.5->3.6?		Server Time 3 Aug 2024 00:22:06 EDT (-0400)

From: Christoph Hormann
Date: 23 Jun 2004 14:30:03
Message: <cbchvs$lmo$1@chho.imagico.de>

Thorsten Froehlich wrote:
> 
> No, you are wrong here:  We fixed a long-existing bug in height-field
> smoothing that is mentioned in the release notes (iirc).  In short,
> height-field smoothing did not work correctly before and thus now is looks
> "different" compared to older versions of POV-Ray because those versions
> were simply buggy.

That does not sound reasonable to me, the smoothing change would only 
influence the normal vector returned by trace(), not the intersection 
point.  The difference Thorsten Crass observed is in the intersection 
points and not only in the normals.

Christoph

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