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[cgal-discuss] Ray_2 type for Exact_predicates_exact_constructions_kernel?


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  • From: Tapadi <>
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  • Subject: [cgal-discuss] Ray_2 type for Exact_predicates_exact_constructions_kernel?
  • Date: Fri, 25 Apr 2014 04:18:09 -0700 (PDT)

Hi all,

I am trying to compute Voronoi Diagrams and insert them into 2D arrangements
(cropping them inside certain faces of the arrangement).
I was glad to find this example on cgal.org:

*http://doc.cgal.org/latest/Triangulation_2/index.html#title15*

I saw that this example runs with the kernel:
CGAL::Exact_predicates_inexact_constructions_kernel (*epick*)

However, I am using:
CGAL::Exact_predicates_exact_constructions_kernel (*epeck*)

... Which avoids the example from compiling properly. The problems looks
like *epeck* not having a nested Ray_2 type while *epick* has one.

This sounds weird to me. Does the definition of a ray implies non-rational
computations? Did I miss something?

Best regards,
Hugo Loi
PhD student at Inria



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