Mike Williams <nos### [at] econymdemoncouk> wrote:
> It appears to be a bounding bug.
>
> If you switch bounding off, ("-MB" in the command line) then the POV
> results match what you'd expect from set theory. So the POV code doing
> the actual intersection, union and inversion code is working as you
> would expect but the automatic bounding is chopping bits off.
>
> The bit that goes
>
>  union
>  {
>   object{C}
>   object{B inverse}
>  }
>
> seems to have its bounding inverted, giving it finite bounds instead of
> infinite bounds. That would be fine if that were the top level of the
> CSG, but when it's part of an intersection the infinite part is really
> needed.
>
> --
> Mike Williams
> Gentleman of Leisure

Mike, that worked perfectly!!! Well done!

I clearly have much to learn about povray and I am thankful for the help
others give me.

Nathan

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