>   (Granted, in the current POV-Ray implementation this would require a
> bit more of work because certain transformations to certain objects are
> "optimized away", for example by applying the transformation to some
> object coordinate instead of applying it to the transformation matrix.
> Thus such a transformation would indeed by "engraved in stone" and not
> possible to revert.

Just curious : I wasn't aware of that kind of optimizations (I thought
that everything was done by matrix, as the docs states).  Does it really
makes a difference in speed ?  After all, so few objects are concerned
(sphere, cylinder, what else ?), and it's useless as soon as an non-uniform
scale is applied...

Fabien.

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