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Re: [cgal-discuss] Re: Problem on CGAL Polygon_2 Intersection


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  • From: Efi Fogel <>
  • To:
  • Subject: Re: [cgal-discuss] Re: Problem on CGAL Polygon_2 Intersection
  • Date: Wed, 28 Mar 2012 10:03:20 +0200

The intersection computation must be used with an exact-predicate-exact-construction kernel. There is no other way.

We are working on fixing the code so that the predicate do_intersect() can be used with an exact-predicate-inexact-construction kernel, but there is no time frame yet.

I doubt there is a difference between the versions and, even if there is it's irrelevant.

On Wed, Mar 28, 2012 at 9:28 AM, Sebastien Loriot (GeometryFactory) <> wrote:
On 03/28/2012 05:20 AM, kyewong wrote:
Just one more thing too add:
I tested both CGAL 3.8 and CGAL 4.0, and found that this problem is much
more severe in 4.0 than in 3.8.
What do you mean?

Sebastien.


I sincerely hope that this problem could be solved soon since it brings me
lots of troubles (for example, using
Exact_predicates_exact_constructions_kernel will make the computation quite
slow and cause a lot of changes to existing code).
Thanks!

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