Am 01.03.2011 06:02, schrieb Trevor G Quayle:

> As far as the non-intersecting bounding box issue, perhaps someone should track
> exactly how POV is handling the negative dimensions.  Perhaps there is a simple
> fix in the code to clear that part up, eg either max all dimensions to 0 so
> negatives aren't allowed, or ignore intersection if any dimension is less than
> 0.  The second is probably the best as the first can still leave a flat plate
> bounding box if only one dimension is negative.

There's actually already code in POV-Ray that checks for this condition; 
it just takes an unsuitable action: Apparently presuming something went 
wrong during bounding box computations, it leaves the bounding box at 
its initialization value, which is "infinite" (and is intended to print 
a warning, but that code is disabled).

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