Warp <war### [at] tagpovrayorg> wrote:
> > "bounded_by" is intended to provide the renderer with a manually-optimized
> > bounding shape instead of the auto-generated bounding box.
>
> > "contained_by" is intended to clip away parts of an object's surface (namely all
> > that lie outside the clipped_by shape), and has *nothing* to do with bounting.
>
>   I think you are confusing "contained_by" and "clipped_by".

Well, as a matter of fact I was - but still contained_by is totally unrelated to
bounding (except that POV will probably base its bounding box on the shape
specified), and is actually quite akin to clipped_by regarding its effect.

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