Am 11.02.2013 18:01, schrieb Alain:
> While rendering some older scenes, I stumbled on this one.
>
> The bounding don't work correctly when used in a way similar to an
> intersection.
> The bounded object itself is not bounded correctly, it's as if the
> bounding object is oriented relative to the camera.
> Next, there is a huge problem with the shadows: Most of the time, the
> part of the original object OUTSIDE the bounding object still cast
> shadows, but not always.
> It's mostly appen when using some infinite primitive, like a quadric,
> but can also appen if the bounded object is a finite primitive or some CSG.

This is /not/ a bug: bounded_by is /not/ supposed to be used for visual 
effects (and never was). It is /solely/ intended for improving the 
rendering speed in cases where POV-Ray's automatic bounding mechanism 
computes far too large bounding boxes.

You may want to try clipped_by instead, or just use a proper 
intersection, depending on what you intend to achieve.

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