POV-Ray : Newsgroups : povray.unofficial.patches : Crash with trace() and mesh Server Time
2 Sep 2024 12:13:33 EDT (-0400)
  Crash with trace() and mesh (Message 1 to 6 of 6)  
From: Margus Ramst
Subject: Crash with trace() and mesh
Date: 3 Feb 2000 19:34:17
Message: <389A1F36.A4DD8872@peak.edu.ee>
Using the trace() function with either mesh or mesh2 causes my copy of
WinMegaPov 0.4 to exit with an illegal operation. Same happens with the
SuperPatch 3.1e (Windows version). Must an old problem, but somehow I've missed
it until now.
Neither individual triangles nor unions of triangles are affected.

Margus


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From: Nathan Kopp
Subject: Re: Crash with trace() and mesh
Date: 6 Feb 2000 20:56:22
Message: <389e2646@news.povray.org>
Yes, the mesh queue was not initialized before the parse.  This same problem
happened with blobs, too.  It will be fixed in the next version.

-Nathan

Margus Ramst <mar### [at] peakeduee> wrote...
> Using the trace() function with either mesh or mesh2 causes my copy of
> WinMegaPov 0.4 to exit with an illegal operation. Same happens with the
> SuperPatch 3.1e (Windows version). Must an old problem, but somehow I've
missed
> it until now.
> Neither individual triangles nor unions of triangles are affected.
>
> Margus


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From: Ron Parker
Subject: Re: Crash with trace() and mesh
Date: 6 Feb 2000 21:42:51
Message: <slrn89sc1f.v8.ron.parker@parkerr.fwi.com>
On Sun, 6 Feb 2000 20:54:13 -0500, Nathan Kopp wrote:
>Yes, the mesh queue was not initialized before the parse.  This same problem
>happened with blobs, too.  It will be fixed in the next version.

I know I fixed that once. Did it somehow not make it into the version
I put online?

-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html


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From: Nathan Kopp
Subject: Re: Crash with trace() and mesh
Date: 6 Feb 2000 22:59:33
Message: <389e4325@news.povray.org>
In your posted version the blob queue was fixed, but the mesh queue was not.
BTW, is it a good idea to leave initialize the queue before parsing and
leave it that way after the trace() function is called?  Might it be a good
idea to reset it between parsing and rendering and even between successive
calls to trace()?

Instead of calling Initialize_xxx_Code before parse, it would probably be
better to call Initialize_xxx_Code before calling Intersection within
Parse_Trace and then calling Deinitialize_xxx_Code after that call to
Intersection and finally calling Initialize_xxx_Code between parsing and
rendering.

-Nathan

Ron Parker <ron### [at] povrayorg> wrote in message
news:slr### [at] parkerrfwicom...
> On Sun, 6 Feb 2000 20:54:13 -0500, Nathan Kopp wrote:
> >Yes, the mesh queue was not initialized before the parse.  This same
problem
> >happened with blobs, too.  It will be fixed in the next version.
>
> I know I fixed that once. Did it somehow not make it into the version
> I put online?
>
> --
> These are my opinions.  I do NOT speak for the POV-Team.
> The superpatch: http://www2.fwi.com/~parkerr/superpatch/
> My other stuff: http://www2.fwi.com/~parkerr/traces.html


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From: Ron Parker
Subject: Re: Crash with trace() and mesh
Date: 7 Feb 2000 08:10:42
Message: <389ec452@news.povray.org>
On Sun, 6 Feb 2000 22:57:23 -0500, Nathan Kopp wrote:
>In your posted version the blob queue was fixed, but the mesh queue was not.

Oddly enough, my local version is that way too.  It must have been one of
the changes I lost when my HD died.

>BTW, is it a good idea to leave initialize the queue before parsing and
>leave it that way after the trace() function is called?  Might it be a good
>idea to reset it between parsing and rendering and even between successive
>calls to trace()?

Does it do that when you render a real scene?  If so, then yes.  If not, 
there's probably no harm in initializing it early.  Personally, I can't find 
anywhere that it gets initialized other than that first call, so I'd guess 
it's fine the way it is.

-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html


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From: Nathan Kopp
Subject: Re: Crash with trace() and mesh
Date: 7 Feb 2000 09:30:30
Message: <389ed706@news.povray.org>
Ron Parker <ron### [at] povrayorg> wrote...
> On Sun, 6 Feb 2000 22:57:23 -0500, Nathan Kopp wrote:
>
> >BTW, is it a good idea to leave initialize the queue before parsing and
> >leave it that way after the trace() function is called?  Might it be a
good
> >idea to reset it between parsing and rendering and even between
successive
> >calls to trace()?
>
> Does it do that when you render a real scene?  If so, then yes.  If not,
> there's probably no harm in initializing it early.  Personally, I can't
find
> anywhere that it gets initialized other than that first call, so I'd guess
> it's fine the way it is.

I took a closer look at the queue and it doesn't cache any data between
successive calls to Intersect, so it is OK the way it is and the
reinitialization is not necessary.

-Nathan


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