On Wed, 17 Jan 2001 08:48:48 +1000, "Chris Colefax"
<chr### [at] tagpovrayorg> wrote:

>Where indeed?  I don't specify any bounding boxes internally in the Spline
>Macro File, as these will be overridden by POV-Ray unless the -UR command
>line option is used.  Instead, each torus is clipped using boxes that fit
>the desired segment as closely as possible.  Ideally, POV-Ray would the
>bound each torus by its clipping box.  You may find it's best to perform
>some manual bounding, however (at least for the union that forms the
>weaving, to prevent slow rendering above and below).

The easiest would be to bound each torus segment like this:

bounded_by { clipped_by }

and then use -UR in the command line. POV *might* just be doing
something wrong.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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