CGAL 6.1.1 - 2D Triangulations

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Triangulation_2/constrained_plus.cpp
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Constrained_Delaunay_triangulation_2.h>
#include <CGAL/Constrained_triangulation_plus_2.h>
#include <cassert>
#include <iostream>
typedef CGAL::Exact_predicates_exact_constructions_kernel K;
typedef CGAL::Exact_intersections_tag Itag;
typedef CGAL::Constrained_Delaunay_triangulation_2<K,CGAL::Default,Itag> CDT;
typedef CGAL::Constrained_triangulation_plus_2<CDT> CDTplus;
typedef CDTplus::Point Point;
int
main( )
{
CDTplus cdt;
std::cout << "Inserting a grid 5 x 5 of constraints " << std::endl;
for (int i = 1; i < 6; ++i)
cdt.insert_constraint( Point(0,i), Point(6,i));
for (int j = 1; j < 6; ++j)
cdt.insert_constraint( Point(j,0), Point(j,6));
assert(cdt.is_valid());
int count = 0;
for (CDTplus::Subconstraint_iterator scit = cdt.subconstraints_begin();
scit != cdt.subconstraints_end();
++scit) ++count;
std::cout << "The number of resulting constrained edges is "
<< count << std::endl;
return 0;
}
CGAL::Constrained_Delaunay_triangulation_2
A constrained Delaunay triangulation is a triangulation with constrained edges which tries to be as m...
Definition: Constrained_Delaunay_triangulation_2.h:96
CGAL::Constrained_triangulation_plus_2
The class Constrained_triangulation_plus_2<Tr> provides a constrained triangulation with an additiona...
Definition: Constrained_triangulation_plus_2.h:55
CGAL::Constrained_triangulation_plus_2::insert_constraint
Constraint_id insert_constraint(Point a, Point b)
inserts the constraint segment ab in the triangulation.
CGAL::Exact_predicates_exact_constructions_kernel
CGAL::Exact_intersections_tag
Intersection tag for constrained triangulations, if exact predicates and exact constructions are prov...
Definition: Constrained_triangulation_2.h:42