mesh_tetgen_wrapper.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2024 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