POV-Ray : Newsgroups : povray.beta-test : Possible Bug in 3.7.0b35a? (wrong refraction angle between different IOR me= Server Time
17 Aug 2022 08:29:41 EDT (-0400)
  Possible Bug in 3.7.0b35a? (wrong refraction angle between different IOR me= (Message 1 to 3 of 3)  
From: Kai
Subject: Possible Bug in 3.7.0b35a? (wrong refraction angle between different IOR me=
Date: 5 Apr 2010 16:30:01
Message: <web.4bba4677730ab9f3e8c084b40@news.povray.org>
I've tried to model this setup:
http://kschwebke.webng.com/povray/ior-interfaces/drawing.png
with the following SDL:
http://kschwebke.webng.com/povray/ior-interfaces/rs2.pov.txt

A small overlap between the two transparent solids is needed, because a gap
would lead to total reflection. The camera in the test scene looks in the
direction of the ray in the setup drawing. The setup is surrounded with angular
markers, so one can easily read the final resulting looking angle.


http://kschwebke.webng.com/povray/ior-interfaces/rs2-35.jpeg

POV-Ray 3.7.0b35a (compiled Unix source) renders a different

http://kschwebke.webng.com/povray/ior-interfaces/rs2-37b35a.jpeg


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From: clipka
Subject: Re: Possible Bug in 3.7.0b35a? (wrong refraction angle between different IOR me=
Date: 6 Apr 2010 17:34:27
Message: <4bbba8e3$1@news.povray.org>
Am 05.04.2010 22:23, schrieb Kai:


> http://kschwebke.webng.com/povray/ior-interfaces/rs2-35.jpeg
>
> POV-Ray 3.7.0b35a (compiled Unix source) renders a different

> http://kschwebke.webng.com/povray/ior-interfaces/rs2-37b35a.jpeg

I checked with a different test setup, to find that 3.7 indeed behaves 
differently to 3.6; as I can't make out any benefit of the new behavior 
I'd consider it a bug indeed.


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From: Kai
Subject: Re: Possible Bug in 3.7.0b35a? (wrong refraction angle between different IO=
Date: 9 Apr 2010 10:50:01
Message: <web.4bbf3e2ecb3344f5ea8bcf4c0@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> I checked with a different test setup, to find that 3.7 indeed behaves
> differently to 3.6; as I can't make out any benefit of the new behavior
> I'd consider it a bug indeed.

Thanks for taking a look. I've filed a bug report for this issue:
http://bugs.povray.org/task/94?project=2


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