mirror of https://github.com/CGAL/cgal
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
// Copyright (c) 2014 GeometryFactory (France). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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// You can redistribute it and/or modify it under the terms of the GNU
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// General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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// Author(s) : Sebastien Loriot
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//
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#ifndef CGAL_FACEGRAPH_POLYHEDRON_3_H
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#define CGAL_FACEGRAPH_POLYHEDRON_3_H 1
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#include <CGAL/basic.h>
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#include <CGAL/Modifier_base.h>
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#include <CGAL/Polyhedron_incremental_builder_3.h>
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#include <CGAL/Cartesian_converter.h>
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#include <CGAL/Kernel_traits.h>
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#include <boost/graph/graph_traits.hpp>
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#include <boost/foreach.hpp>
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namespace CGAL {
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template < class FaceGraph, class PointPMap, class HDS, bool clear_target_before = true >
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class FaceGraph_to_Polyhedron_3 : public Modifier_base<HDS> {
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FaceGraph& fg;
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PointPMap ppmap;
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public:
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typedef HDS Halfedge_data_structure;
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FaceGraph_to_Polyhedron_3(const FaceGraph& src, PointPMap map)
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: fg(const_cast<FaceGraph&>(src))
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, ppmap(map)
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{}
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void operator()( HDS& target);
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};
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template < class FaceGraph, class PointPMap, class HDS, bool clear_target_before>
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void
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FaceGraph_to_Polyhedron_3<FaceGraph, PointPMap, HDS, clear_target_before>::
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operator()(HDS& tgt)
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{
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typedef typename boost::graph_traits<FaceGraph>::vertex_descriptor vertex_descriptor;
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typedef typename boost::graph_traits<FaceGraph>::face_descriptor face_descriptor;
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typedef typename boost::graph_traits<FaceGraph>::halfedge_descriptor halfedge_descriptor;
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Cartesian_converter<
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typename Kernel_traits<typename boost::property_traits<PointPMap>::value_type>::Kernel,
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typename Kernel_traits<typename HDS::Vertex::Point>::Kernel
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> convert;
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if ( clear_target_before )
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tgt.clear();
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Polyhedron_incremental_builder_3<HDS> B(tgt);
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B.begin_surface( num_vertices(fg),
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num_faces(fg),
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num_halfedges(fg));
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std::map<vertex_descriptor, std::size_t> indices;
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std::size_t i=0;
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BOOST_FOREACH(vertex_descriptor vd, vertices(fg) )
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{
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B.add_vertex( convert( get(ppmap, vd) ) );
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indices[vd]=i++;
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}
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BOOST_FOREACH(face_descriptor fd, faces(fg))
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{
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B.begin_facet();
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halfedge_descriptor hd=halfedge(fd, fg), first=hd;
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do {
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B.add_vertex_to_facet( indices[target(edge(hd,fg), fg)] );
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hd=next(hd,fg);;
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} while( hd != first);
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B.end_facet();
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}
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B.end_surface();
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}
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} //namespace CGAL
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#endif // CGAL_FACEGRAPH_POLYHEDRON_3_H //
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// EOF //
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