GrimDude wrote:
> All of my aircraft models have been affected by something in MegaPov. I use
> a lot of differences in order to apply images to given portions of the
> planes, clip out panels, etc., and I keep seeing extraneous portions of the
> difference object.

Are you saying these models worked in official POV? Because by 
rights they probably shouldn't have. Meshes never used to be 
reliably usable for CSG other than unions because they had no 
well defined insides and outsides, and if differencing other 
shapes from them worked at all, it proabably acted like clipping. 
MegaPOV changed this by giving meshes "insides" so differencing 
from a mesh will behave in a fundamentally different way in 
MegaPOV, but that most likely isn't a bug you're seeing. You
might have to substitute clipped_by for difference to get the
same effect now.

> To test this I took a simple sphere mesh, and subtracted out a  box
> (non-mesh). A portion of the box remains within the scene. 

Is it fundamentally different from when you do the same difference
of a box from a regular sphere primitive? If not, what you're
seeing is the difference "solid" meshes (new in MegaPOV) makes
on the operation. 

Charles

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