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## ConstrainedDelaunayTriangulationTraits_2

### Definition

The concept ConstrainedDelaunayTriangulationTraits_2 defines the requirements for the geometric traits class of a constrained Delaunay triangulation that supports intersections of input constraints. This is the case when the template parameter Itag of ( Constrained_Delaunay_triangulation_2<Traits,Tds,Itag>) is instantiated by one of the tag classes Exact_intersections_tag or Exact_predicates_tag). The concept ConstrainedDelaunayTriangulationTraits_2 refines both the concept DelaunayTriangulationTraits_2 and the concept ConstrainedTriangulationTraits_2.

### Refines

DelaunayTriangulationTraits_2
ConstrainedTriangulationTraits_2

### Has Models

The kernels of CGAL are models for this traits class.

### See Also

TriangulationTraits_2
ConstrainedTriangulationTraits_2
Constrained_triangulation_2<Gt,Tds,Itag>
Constrained_Delaunay_triangulation_2<Gt,Tds,Itag>

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The CGAL Project . Tue, December 21, 2004 .