POV-Ray : Newsgroups : povray.unofficial.patches : MegaPov and Normals Server Time
2 Sep 2024 18:17:19 EDT (-0400)
  MegaPov and Normals (Message 1 to 7 of 7)  
From: Fabian Brau
Subject: MegaPov and Normals
Date: 10 Dec 1999 03:41:22
Message: <3850BD42.E2E522A8@umh.ac.be>
Hello,

Before to post a message with some images I just want to know 
if it is normal that uvpov 6.2 and winMagePov 0.1 give different 
results for the normal of a texture? If not, I will post two images 
and the code.

Fabian.


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From: Ken
Subject: Re: MegaPov and Normals
Date: 10 Dec 1999 05:14:54
Message: <3850D27A.568214E@pcabell.net>
Fabian Brau wrote:
> 
> Hello,
> 
> Before to post a message with some images I just want to know
> if it is normal that uvpov 6.2 and winMagePov 0.1 give different
> results for the normal of a texture? If not, I will post two images
> and the code.
> 
> Fabian.

There is a bug in the official version of POV-Ray related to scaling
normals. Nathan fixed this bug for this new release of MegaPov.

See the bug reports group for details of the normal scaling bug.

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Fabian Brau
Subject: Re: MegaPov and Normals
Date: 10 Dec 1999 05:29:50
Message: <3850D6AF.DA3FA68A@umh.ac.be>
Hello Ken,

I know this. But here is the "problem" : when you render a scene 
with 1) official version of Povray 2) UVpov6.2 3) Megapov,
you obtain 3 differents images for the normals!
I thought (and I think) that the bug for the normal was completly
corrected in UVpov6.2 so I ask if it is normal that UVpov6.2 and 
MegaPov 0.1 give different result for normals.

Fabian.

Ken wrote:
> 
> Fabian Brau wrote:
> >
> > Hello,
> >
> > Before to post a message with some images I just want to know
> > if it is normal that uvpov 6.2 and winMagePov 0.1 give different
> > results for the normal of a texture? If not, I will post two images
> > and the code.
> >
> > Fabian.
> 
> There is a bug in the official version of POV-Ray related to scaling
> normals. Nathan fixed this bug for this new release of MegaPov.
> 
> See the bug reports group for details of the normal scaling bug.
> 
> --
> Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Ken
Subject: Re: MegaPov and Normals
Date: 10 Dec 1999 05:52:49
Message: <3850DB5E.4D47CE02@pcabell.net>
Fabian Brau wrote:
> 
> Hello Ken,
> 
> I know this. But here is the "problem" : when you render a scene
> with 1) official version of Povray 2) UVpov6.2 3) Megapov,
> you obtain 3 differents images for the normals!

I am sorry. I did not know that you recieving 3 different results.
I will have to let Nathan answer this question for you.

-- 
Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Fabian Brau
Subject: Re: MegaPov and Normals
Date: 10 Dec 1999 08:06:47
Message: <3850FB79.F4C28E6D@umh.ac.be>
No problem Ken :)!

Fabian.

Ken wrote:
> 
> Fabian Brau wrote:
> >
> > Hello Ken,
> >
> > I know this. But here is the "problem" : when you render a scene
> > with 1) official version of Povray 2) UVpov6.2 3) Megapov,
> > you obtain 3 differents images for the normals!
> 
> I am sorry. I did not know that you recieving 3 different results.
> I will have to let Nathan answer this question for you.
> 
> --
> Ken Tyler -  1200+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/


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From: Nathan Kopp
Subject: Re: MegaPov and Normals
Date: 10 Dec 1999 21:54:58
Message: <3851bd02@news.povray.org>
Fabian Brau <fab### [at] umhacbe> wrote...
> Hello Ken,
>
> I know this. But here is the "problem" : when you render a scene
> with 1) official version of Povray 2) UVpov6.2 3) Megapov,
> you obtain 3 differents images for the normals!
> I thought (and I think) that the bug for the normal was completly
> corrected in UVpov6.2 so I ask if it is normal that UVpov6.2 and
> MegaPov 0.1 give different result for normals.
>

I _thought_ I had it totally fixed in UVPov 6.2, but I did not.  Sorry.
This time it is really fixed (I've done a number of tests).

-Nathan


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From: Fabian Brau
Subject: Re: MegaPov and Normals
Date: 13 Dec 1999 03:21:45
Message: <3854AD2E.3AF4D6D6@umh.ac.be>
Ok Thanks!

Fabian.

Nathan Kopp wrote:
> 
> Fabian Brau <fab### [at] umhacbe> wrote...
> > Hello Ken,
> >
> > I know this. But here is the "problem" : when you render a scene
> > with 1) official version of Povray 2) UVpov6.2 3) Megapov,
> > you obtain 3 differents images for the normals!
> > I thought (and I think) that the bug for the normal was completly
> > corrected in UVpov6.2 so I ask if it is normal that UVpov6.2 and
> > MegaPov 0.1 give different result for normals.
> >
> 
> I _thought_ I had it totally fixed in UVPov 6.2, but I did not.  Sorry.
> This time it is really fixed (I've done a number of tests).
> 
> -Nathan


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