I may have misunderstood your problem, but couldn't you intersect the
isosurface with your desired primitive ie cone, cylinder etc? Then you could
apply all your rotates and scales to the intersected primitive.

Andy

"Dennis Milller" <dhm### [at] mediaonenet> wrote in message
news:3b5a415a@news.povray.org...
> Well to clarify, the shape of the contained_by object is very clear (a box
> or a sphere) in some points of the animations that I am working on. I'm
> trying to find out if there are any ways to modify those shapes, which are
> like a frame for the isosurface. Why you can't rotate or scale the
> contained-by object independent of the isosurface itself or for that
matter,
> use other types of contained by shapes (cylinder, cone, etc.).
> Anyone know?
> thanks,
> Dennis

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