In article <39b16fb4@news.povray.org> , "Bob Hughes" 
<per### [at] aolcom?subject=PoV-News:> wrote:

> Anyone mind trying to confirm this error?  The DOC says up to 200 nested
> loops should be possible but I think it's only related to the fact a
> 'inverse' is in the CSG.  I tried small variations and the thing outlined
> here seems to be the key problem.  Reason I say "double loop" is because it
> doesn't occur if the CSG object is placed in the outer loop (singular
> loop?).
> If it's memory being the problem it appears to bestopping at about a count
> of 110 instances of the object, which I thought had nothing to do with
> nested levels anyway.
> Appreciate any feedback so it can be reported or skipped.
>   TIA,  Bob

OK, the problem is in your scene - more or less.  As you may have noticed,
once you add "inverse" you get the "Camera is inside a non-hollow object.
Fog and participating media may not work as expected." warning.

Well, if you check your scenes, the camera is not inside one hollow object
or two, no, it is contained inside a few hundred non-hollow objects! And
POV-Ray has in internal limit of the maximum non-hollow objects a camera can
be contained in (100). This limit is set by the extension that allows you to
place cameras inside objects in the first place.

Your scene is unlikely to render in any way as you expect because of this
anyway (why should everything in your scene be inverse? - then there is no
difference between it and a non-inverse scene!).  The solution is not to use
"inverse" on infinite objects in your scene.

Further, if the POV-Ray documentation does not already contain a warning
about cameras in non-hollow objects, such a section should probably be
added...


      Thorsten


____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org

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