Add an issue

2020-08-26 11:27:37 +01:00
parent 875f8236e2
commit d1f2cc600c
2 changed files with 124 additions and 0 deletions
@@ -0,0 +1,40 @@
+#include<boost/shared_ptr.hpp>
+#include <cassert>
+
+#include<CGAL/Exact_predicates_inexact_constructions_kernel.h>
+#include<CGAL/Polygon_2.h>
+#include<CGAL/create_straight_skeleton_2.h>
+
+#include "print.h"
+
+typedef CGAL::Exact_predicates_inexact_constructions_kernel K ;
+
+typedef K::Point_2                   Point ;
+typedef CGAL::Polygon_2<K>           Polygon_2 ;
+typedef CGAL::Straight_skeleton_2<K> Ss ;
+
+typedef boost::shared_ptr<Ss> SsPtr ;
+
+int main()
+{
+  Polygon_2 poly ;
+
+
+    poly.push_back( Point( 0, 0 ) );
+    poly.push_back( Point( 2000, 8000 ) );
+    poly.push_back( Point( 10000, 10000 ) );
+    poly.push_back( Point( 2000, 12000 ) );
+    poly.push_back( Point( 0, 20000 ) );
+    poly.push_back( Point( -2000, 12000 ) );
+    poly.push_back( Point( -10000, 10000 ) );
+    poly.push_back( Point( -2000, 8000 ) );
+    assert(poly.is_simple());
+    assert(poly.is_counterclockwise_oriented());
+
+  // You can pass the polygon via an iterator pair
+  SsPtr iss = CGAL::create_interior_straight_skeleton_2(poly.vertices_begin(), poly.vertices_end());
+
+  print_straight_skeleton(*iss);
+
+  return 0;
+}
@@ -0,0 +1,84 @@
+#include <CGAL/Polygon_2.h>
+#include <CGAL/Polygon_with_holes_2.h>
+
+template<class K>
+void print_point ( CGAL::Point_2<K> const& p )
+{
+  std::cout << "(" << p.x() << "," << p.y() << ")" ;
+}
+
+template<class K, class C>
+void print_polygon ( CGAL::Polygon_2<K,C> const& poly )
+{
+  typedef CGAL::Polygon_2<K,C> Polygon ;
+
+  std::cout << "Polygon with " << poly.size() << " vertices" << std::endl ;
+
+  for( typename Polygon::Vertex_const_iterator vi = poly.vertices_begin() ; vi != poly.vertices_end() ; ++ vi )
+  {
+    print_point(*vi); std::cout << std::endl ;
+  }
+}
+
+template<class K, class C>
+void print_polygons ( std::vector< boost::shared_ptr< CGAL::Polygon_2<K,C> > > const& polies )
+{
+  typedef std::vector< boost::shared_ptr< CGAL::Polygon_2<K,C> > > PolygonVector ;
+
+  std::cout << "Polygon list with " << polies.size() << " polygons" << std::endl ;
+
+  for( typename PolygonVector::const_iterator pi = polies.begin() ; pi != polies.end() ; ++ pi )
+    print_polygon(**pi);
+}
+
+template<class K, class C>
+void print_polygon_with_holes ( CGAL::Polygon_with_holes_2<K,C> const& polywh )
+{
+  typedef CGAL::Polygon_with_holes_2<K,C> PolygonWithHoles ;
+
+  std::cout << "Polygon_with_holes having " << polywh.number_of_holes() << " holes" << std::endl ;
+
+  print_polygon(polywh.outer_boundary());
+
+  for( typename PolygonWithHoles::Hole_const_iterator hi = polywh.holes_begin() ; hi != polywh.holes_end() ; ++ hi )
+    print_polygon(*hi);
+}
+
+template<class K, class C>
+void print_polygons_with_holes ( std::vector< boost::shared_ptr< CGAL::Polygon_with_holes_2<K,C> > > const& polies )
+{
+
+  typedef std::vector< boost::shared_ptr< CGAL::Polygon_with_holes_2<K,C> > > PolygonWithHolesVector ;
+
+  std::cout << "Polygon_with_holes list with " << polies.size() << " element" << std::endl ;
+
+  for( typename PolygonWithHolesVector::const_iterator pi = polies.begin() ; pi != polies.end() ; ++ pi )
+    print_polygon_with_holes(**pi);
+}
+
+
+template<class K>
+void print_straight_skeleton( CGAL::Straight_skeleton_2<K> const& ss )
+{
+  typedef CGAL::Straight_skeleton_2<K> Ss ;
+
+  typedef typename Ss::Vertex_const_handle     Vertex_const_handle ;
+  typedef typename Ss::Halfedge_const_handle   Halfedge_const_handle ;
+  typedef typename Ss::Halfedge_const_iterator Halfedge_const_iterator ;
+
+  Halfedge_const_handle null_halfedge ;
+  Vertex_const_handle   null_vertex ;
+
+  std::cout << "Straight skeleton with " << ss.size_of_vertices()
+            << " vertices, " << ss.size_of_halfedges()
+            << " halfedges and " << ss.size_of_faces()
+            << " faces" << std::endl ;
+
+  for ( Halfedge_const_iterator i = ss.halfedges_begin(); i != ss.halfedges_end(); ++i )
+  {
+    print_point(i->opposite()->vertex()->point()) ;
+    std::cout << "->" ;
+    print_point(i->vertex()->point());
+    std::cout << " " << ( i->is_bisector() ? "bisector" : "contour" ) << std::endl;
+  }
+}