Start incremental builder

Combinatorial_map/include/CGAL/Combinatorial_map.h

@@ -834,13 +834,10 @@ namespace CGAL {
     Dart_const_handle opposite(Dart_const_handle ADart) const
     { return this->template beta<dim>(ADart); }
 
-    template<unsigned int dim>
+    Dart_handle other_orientation(Dart_handle ADart)
-    void sew_opposite(Dart_handle dh1, Dart_handle dh2,
+    { return ADart; }
-                      bool update_attributes=true)
+    Dart_const_handle other_orientation(Dart_const_handle ADart) const
-    {
+    { return ADart; }
-      assert(dim>0);
-      sew<dim>(dh1, dh2, update_attributes);
-    }
     
     /** Count the number of used marks.
      * @return the number of used marks.
@@ -3808,6 +3805,12 @@ namespace CGAL {
       this->automatic_attributes_management = newval;
     }
 
+    /** Create an half-edge.
+     * @return a dart of the new half-edge.
+     */
+    Dart_handle make_half_edge()
+    { return create_dart(); }
+    
     /** Create an edge.
      * if closed==true, the edge has no 2-free dart.
      * (note that for CMap there is no differente between true and false, but

Generalized_map/include/CGAL/Generalized_map.h

@@ -780,13 +780,16 @@ namespace CGAL {
     template<unsigned int dim>
     Dart_const_handle opposite(Dart_const_handle ADart) const
     { return this->template alpha<0, dim>(ADart); }
-
+    
-    template<unsigned int dim>
+    Dart_handle other_orientation(Dart_handle ADart)
-    void sew_opposite(Dart_handle dh1, Dart_handle dh2,
-                      bool update_attributes=true)
     {
-      assert(dim>0);
+      CGAL_assertion(!this->template is_free<0>(ADart));
-      sew<dim>(dh1, this->template alpha<0>(dh2), update_attributes);
+      return this->alpha<0>(ADart);
+    }
+    Dart_const_handle other_orientation(Dart_const_handle ADart) const
+    {
+      CGAL_assertion(!this->template is_free<0>(ADart));
+      return this->alpha<0>(ADart);
     }
     
     /** Count the number of used marks.
@@ -2957,6 +2960,16 @@ namespace CGAL {
       this->automatic_attributes_management = newval;
     }
 
+    /** Create an half-edge.
+     * @return a dart of the new half-edge.
+     */
+    Dart_handle make_half_edge()
+    {
+      Dart_handle d1=create_dart();
+      basic_link_alpha<0>(d1, create_dart());
+      return d1;
+    }
+    
     /** Create an edge.
      * if closed==true, the edge has no 2-free dart.
      * @return a dart of the new edge.

Linear_cell_complex/include/CGAL/Linear_cell_complex_base.h

@@ -546,7 +546,8 @@ namespace CGAL {
                 (*it1, this->previous(*it2)))
             {
               ++res;
-              this->template sew_opposite<3>(*it1, this->previous(*it2));
+              this->template sew<3>(*it1,
+                                    this->other_orientation(previous(*it2)));
             }
           }
         }

Linear_cell_complex/include/CGAL/Linear_cell_complex_incremental_builder.h

@@ -38,7 +38,7 @@ namespace CGAL {
       lcc(alcc)
     {}
 
-    Vertex_attribute_handle add_vertex (const Point_3& p)
+    Vertex_attribute_handle add_vertex(const Point_3& p)
     {
       Vertex_attribute_handle res = lcc.create_vertex_attribute(p);
       vertex_map.push_back(res);
@@ -58,7 +58,7 @@ namespace CGAL {
     {
       CGAL_assertion( i<new_vertices );
       // std::cout<<i<<"  "<<std::flush;
-      Dart_handle cur = lcc.create_dart(vertex_map[i]);
+      Dart_handle cur = lcc.make_half_edge(vertex_map[i]);
 
       if ( prev_dart!=lcc.null_handle )
       {