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Subject: [ggl] Re: Help needed with Intersection operation
From: Barend Gehrels (barend)
Date: 2011-10-13 02:19:29

Hi Christoph,

OK, great to hear.

Regards, Barend

On 12-10-2011 2:22, Christoph Keller wrote:
> Hello Barend,
> Thanks for that fix.
> It works for me and I am pretty happy the Geometry module is in boost.
> I did not have other errors and the one I had did not occur again.
> Thanks!
> Christoph
> On 09/06/2011 07:17 PM, Barend Gehrels wrote:
>> 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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Barend Gehrels

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