97 lines
3.0 KiB
C++
Executable File
97 lines
3.0 KiB
C++
Executable File
// Copyright (c) 2017 GeometryFactory (France).
|
|
// All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public License as
|
|
// published by the Free Software Foundation; either version 3 of the License,
|
|
// or (at your option) any later version.
|
|
//
|
|
// Licensees holding a valid commercial license may use this file in
|
|
// accordance with the commercial license agreement provided with the software.
|
|
//
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
// SPDX-License-Identifier: LGPL-3.0+
|
|
//
|
|
// Author(s) : Mael Rouxel-Labbé
|
|
|
|
#ifndef CGAL_BGL_PARTITION_H
|
|
#define CGAL_BGL_PARTITION_H
|
|
|
|
/**
|
|
* \ingroup PkgBGL
|
|
* \file CGAL/boost/graph/partition.h
|
|
* Convenience header file including the headers for all the partitioning-related
|
|
* free functions of this package.
|
|
*/
|
|
|
|
#include <CGAL/boost/graph/METIS/partition_graph.h>
|
|
#include <CGAL/boost/graph/METIS/partition_dual_graph.h>
|
|
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <sstream>
|
|
#include <string>
|
|
|
|
namespace CGAL {
|
|
|
|
namespace internal {
|
|
|
|
// Note that to use the function below with Polyhedron_3, you need to enhance
|
|
// the Polyhedron_3 to use items, that is, use:
|
|
// typedef CGAL::Polyhedron_3<K, CGAL::Polyhedron_items_with_id_3> PM;
|
|
|
|
// \ingroup PkgBGLPartition
|
|
//
|
|
// Output each part of a partition as a single mesh.
|
|
//
|
|
// \param tm a triangle mesh
|
|
// \param nparts the number of parts
|
|
// \param fpmap the property map with the partition indices
|
|
// \param filename_base Partitions will be output in `.off` files named
|
|
// `{filename_base}_[0...nparts].off`
|
|
//
|
|
// \tparam TriangleMesh must be a model of a `FaceListGraph`, `HalfedgeListGraph`, and \bgllink{VertexListGraph}.
|
|
// \tparam FacePartitionIDPmap is a model of `ReadablePropertyMap`
|
|
// with `boost::graph_traits<TriangleMesh>::%face_descriptor`
|
|
// as key type and `boost::graph_traits<Graph>::%faces_size_type` as value type.
|
|
template<typename TriangleMesh, typename FacePartitionIDPmap>
|
|
void output_partition(const TriangleMesh& tm,
|
|
const idx_t nparts,
|
|
const FacePartitionIDPmap fpmap,
|
|
const std::string filename_base)
|
|
{
|
|
CGAL_precondition(CGAL::is_triangle_mesh(tm));
|
|
|
|
typedef CGAL::Face_filtered_graph<TriangleMesh> Filtered_graph;
|
|
|
|
for(int i=0; i<nparts; ++i)
|
|
{
|
|
std::ostringstream filename;
|
|
filename << filename_base << "_" << i << ".off" << std::ends;
|
|
std::ofstream out(filename.str().c_str());
|
|
|
|
Filtered_graph m_part(tm, i, fpmap);
|
|
if(!m_part.is_selection_valid())
|
|
{
|
|
std::cerr << "Warning: cannot extract subdomain #" << i << " because it is "
|
|
<< "not a manifold mesh" << std::endl;
|
|
continue;
|
|
}
|
|
|
|
TriangleMesh out_mesh;
|
|
CGAL::copy_face_graph(m_part, out_mesh);
|
|
|
|
out << out_mesh;
|
|
}
|
|
}
|
|
|
|
} // namespace internal
|
|
|
|
} // namespace CGAL
|
|
|
|
#endif // CGAL_BGL_PARTITION_H
|