mirror of https://github.com/CGAL/cgal
93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
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#include <CGAL/Polyhedron_3.h>
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#include <CGAL/IO/Polyhedron_iostream.h>
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#include <CGAL/boost/graph/graph_traits_Polyhedron_3.h>
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#include <CGAL/Surface_mesh.h>
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#include <CGAL/boost/graph/graph_traits_Surface_mesh.h>
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#if defined(CGAL_USE_OPENMESH)
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#include <OpenMesh/Core/IO/MeshIO.hh>
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#include <OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh>
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#include <CGAL/boost/graph/graph_traits_PolyMesh_ArrayKernelT.h>
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namespace OpenMesh { // auxiliary functions so OpenMesh Handles can be hashed
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inline std::size_t hash_value(const VertexHandle& i) { return i.idx(); }
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inline std::size_t hash_value(const HalfedgeHandle& i) { return i.idx(); }
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inline std::size_t hash_value(const FaceHandle& i) { return i.idx(); }
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}
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#endif
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#include <CGAL/boost/graph/copy_face_graph.h>
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#include <boost/unordered_map.hpp>
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#include <iostream>
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#include <fstream>
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typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
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typedef Kernel::Point_3 Point;
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typedef CGAL::Polyhedron_3<Kernel> Source;
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typedef boost::graph_traits<Source>::vertex_descriptor sm_vertex_descriptor;
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typedef boost::graph_traits<Source>::halfedge_descriptor sm_halfedge_descriptor;
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typedef CGAL::Surface_mesh<Point> Target1;
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int main(int argc, char* argv[])
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{
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Source S;
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std::ifstream in((argc>1)?argv[1]:"cube.off");
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in >> S;
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Target1 T1;
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{
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typedef boost::graph_traits<Target1>::vertex_descriptor tm_vertex_descriptor;
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typedef boost::graph_traits<Target1>::halfedge_descriptor tm_halfedge_descriptor;
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boost::unordered_map<sm_vertex_descriptor, tm_vertex_descriptor> v2v;
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boost::unordered_map<sm_halfedge_descriptor, tm_halfedge_descriptor> h2h;
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CGAL::copy_face_graph(S,T1,v2v,h2h);
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std::ofstream out("sm.off");
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out << T1;
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}
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#if defined(CGAL_USE_OPENMESH)
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typedef OpenMesh::PolyMesh_ArrayKernelT</* MyTraits*/> Target2;
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Target2 T2;
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{
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typedef OpenMesh::PolyMesh_ArrayKernelT</* MyTraits*/> Target2;
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typedef boost::graph_traits<Target2>::vertex_descriptor tm_vertex_descriptor;
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typedef boost::graph_traits<Target2>::halfedge_descriptor tm_halfedge_descriptor;
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boost::unordered_map<sm_vertex_descriptor, tm_vertex_descriptor> v2v;
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boost::unordered_map<sm_halfedge_descriptor, tm_halfedge_descriptor> h2h;
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CGAL::copy_face_graph(S,T2,v2v,h2h);
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OpenMesh::IO::write_mesh(T2, "om.off");
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}
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#endif
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S.clear();
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{
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typedef boost::graph_traits<Target1>::vertex_descriptor source_vertex_descriptor;
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typedef boost::graph_traits<Target1>::halfedge_descriptor source_halfedge_descriptor;
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typedef boost::graph_traits<Source>::vertex_descriptor tm_vertex_descriptor;
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typedef boost::graph_traits<Source>::halfedge_descriptor tm_halfedge_descriptor;
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boost::unordered_map<source_vertex_descriptor, tm_vertex_descriptor> v2v;
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boost::unordered_map<source_halfedge_descriptor, tm_halfedge_descriptor> h2h;
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CGAL::copy_face_graph(T1,S,v2v,h2h);
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std::ofstream out("reverse.off");
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out << T1;
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}
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return 0;
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}
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