On Sun, 18 Apr 1999 05:29:06 -0600, Steve <ste### [at] puzzlecraftcom>
wrote:

>The coincident surface warning is a good one. It doesn't seem very difficult to
>test for the condition.

Unfortunately, it is in fact quite difficult to test for that
condition.  It'd be easier to fix the code so coincident surfaces
weren't a problem any more, but even that doesn't look too easy.  I
posted some observations on a possible fix some time ago, if anyone
cares to look.

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