POV-Ray: Newsgroups: povray.general: [bug] declared normal on camera

POV-Ray : Newsgroups : povray.general : [bug] declared normal on camera		Server Time 21 Apr 2025 17:12:09 EDT (-0400)

From: Fabien Mosen
Subject: [bug] declared normal on camera
Date: 12 Mar 2001 05:19:52
Message: <3AACA239.E380A0E2@skynet.be>

The following piece of code makes POV-Ray (under Windows, both
official and unofficial) exit, without any message, once the rendering
is complete :

#declare Cam1 = camera {location <500,150,-250> 
                        direction z*1 
                        look_at <0,150,120>
                        normal {bumps .1}
                        }
camera {Cam1}                        

This happens when the camera is declared AND there is a normal
statement in the camera.  Not very annoying, since it's easy to
turn around, but still a bug.

Fabien.

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From: Alan Kong
Subject: Re: [bug] declared normal on camera
Date: 12 Mar 2001 21:46:59
Message: <f92ratk0hl2e5g0l1uop0dq7npi70ald3k@4ax.com>

On Mon, 12 Mar 2001 11:17:29 +0100 Fabien Mosen wrote:

>The following piece of code makes POV-Ray (under Windows, both
>official and unofficial) exit, without any message, once the rendering
>is complete :

  Hi, Fabien. Are you using the vc++ compiled version of v3.1g or the
Watcom? Not sure if it makes a difference but it may help us track things...

-- 
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer

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From: Fabien Mosen
Subject: Re: [bug] declared normal on camera
Date: 13 Mar 2001 03:30:57
Message: <3AADDA34.3A2F00F3@skynet.be>

Alan Kong wrote:
> 
>   Hi, Fabien. Are you using the vc++ compiled version of v3.1g or the
> Watcom? Not sure if it makes a difference but it may help us track things...

Strangely, as I redid the test, the crash now occured BEFORE rendering,
go figure...

The problem is exactly the same with
- 3.1g official Watcom.
- MegaPOV 0.7
- MLPOV (MP 0.7 + aoi patch) msvc compiled.

I'm using Windows ME on a Celeron 633, 128 Mb.

Fabien.

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From: Christophe Bouffartigue
Subject: Re: [bug] declared normal on camera
Date: 28 Mar 2001 06:50:48
Message: <3AC1D01B.46A33EC7@nanterre.marelli.fr>

Fabien Mosen wrote:
> 
> Alan Kong wrote:
> >
> >   Hi, Fabien. Are you using the vc++ compiled version of v3.1g or the
> > Watcom? Not sure if it makes a difference but it may help us track things...
> 
> Strangely, as I redid the test, the crash now occured BEFORE rendering,
> go figure...
> 
> The problem is exactly the same with
> - 3.1g official Watcom.
> - MegaPOV 0.7
> - MLPOV (MP 0.7 + aoi patch) msvc compiled.
> 
> I'm using Windows ME on a Celeron 633, 128 Mb.
> 
> Fabien.

Well, with a unix version, in POV 3.1g, POV exits (without crashing)
before the rendering, with the following message:

"Warp type 16384 not yet implemented"

Doing the same test with POVMan 0.62 (unix) ends OK (no bug, no crash).

Bouf.

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From: Vahur Krouverk
Subject: Re: [bug] declared normal on camera
Date: 4 Apr 2001 05:51:43
Message: <3ACAEED7.1F6DC2C1@aetec.ee>

Fabien Mosen wrote:
> 
> The following piece of code makes POV-Ray (under Windows, both
> official and unofficial) exit, without any message, once the rendering
> is complete :

Bug reason is probably found by POV-Team, but just for case... 

Christophe Bouffartigue released POVMan 0.71.4, which has corrected this
bug.
For correction line with + should be added to Copy_Camera() function in
file camera.c:

  {
    New = Create_Camera();

    *New = *Old;
+   New->Tnormal = Copy_Tnormal(Old->Tnormal);
  }

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