Orchid XP v2 <voi### [at] devnull> wrote:
> (Actually, the code that generates the 4 points guarantees them to form 
> a rectangle. To be specific, A and B are identical except for the Z 
> coordinate, as are C and D...)

  I don't think that's a guarantee of rectangularity nor even
parallelogramity.

-- 
                                                          - Warp

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