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Subject: [ggl] Re: Help needed with Intersection operation
From: Barend Gehrels (barend)
Date: 2011-09-06 13:55:20

Hi Christoph,

> The difference between integer and ttmath is that if we look at the
> original test case and substract B from A (lets call the result C) and
> then intersect C with B, then no precision would have avoided this
> kind of numerical problem. (The problem is that a point from B is very
> near the border of C in the order of epsilon). With integer we get
> some rounding error in each operation(I can live with that). It is ok,
> if I get a very small triangle from the intersecton operation, that
> can be thrown away.
> This whole series of operations is a bit strange anyway.
> Thanks for all your effort.

You are welcome ;-)

Just curious if you tested the fix I submitted, is your problem now
solved with that, or did you select another way and did not test (I can
imagine that as well).

Regards, Barend

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