mesh_tetgen_wrapper.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// This library is free software; 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 2.1 of the License, or (at your option) any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
#ifndef LIBMESH_MESH_TETGEN_WRAPPER_H
#define LIBMESH_MESH_TETGEN_WRAPPER_H
 
#include "libmesh/libmesh_config.h"
#ifdef LIBMESH_HAVE_TETGEN
 
// TetGen include file
// tetgen.h triggers -Werror=switch-default
#include "libmesh/ignore_warnings.h"
#include "tetgen.h"  // Defines REAL and other Tetgen types
#include "libmesh/restore_warnings.h"
 
// C++ includes
#include <string>
#include <memory>
 
namespace libMesh
{
class TetGenWrapper
{
public:
 
  TetGenWrapper ();
 
  ~TetGenWrapper ();
 
  void set_switches(std::string_view s);
 
  void run_tetgen();
 
  int  get_numberoftetrahedra();
 
  int  get_numberoftrifaces();
 
  void set_numberofpoints(int i);
 
  int get_numberofpoints();
 
  void set_numberoffacets(int i);
 
  void set_numberofholes(int i);
 
  void set_numberofregions(int i);
 
  void allocate_pointlist(int numofpoints);
 
  void allocate_facetlist(int numoffacets, int numofholes);
 
  void allocate_regionlist(int numofregions);
 
  void set_node(unsigned i, REAL x, REAL y, REAL z);
 
  void get_output_node(unsigned i, REAL & x, REAL & y, REAL & z);
 
  int  get_element_node(unsigned i, unsigned j);
 
  int  get_triface_node(unsigned i, unsigned j);
 
  REAL get_element_attribute(unsigned i);
 
  void set_hole(unsigned i, REAL x, REAL y, REAL z);
 
  void set_facet_numberofpolygons(unsigned i, int num);
 
  void set_facet_numberofholes(unsigned i, int num);
 
  void allocate_facet_polygonlist(unsigned i, int numofpolygons);
 
  void set_polygon_numberofvertices(unsigned i, unsigned j, int num);
 
  void allocate_polygon_vertexlist(unsigned i, unsigned j, int numofvertices);
 
  void set_vertex(unsigned i, unsigned j, unsigned k, int nodeindex);
 
  void set_region(unsigned i, REAL x, REAL y, REAL z,
                  REAL attribute, REAL vol_constraint);
 
  tetgenio   tetgen_data;
 
  std::unique_ptr<tetgenio> tetgen_output;
 
  tetgenmesh      tetgen_mesh;
 
  tetgenbehavior  tetgen_be;
};
 
 
 
} // namespace libMesh
 
 
#endif // LIBMESH_HAVE_TETGEN
#endif // LIBMESH_MESH_TETGEN_WRAPPER_H