nemesis_io.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2018 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_NEMESIS_IO_H
#define LIBMESH_NEMESIS_IO_H


// Local includes
#include "libmesh/libmesh_common.h"
#include "libmesh/mesh_input.h"
#include "libmesh/mesh_output.h"
#include "libmesh/parallel_object.h"

// C++ includes

namespace libMesh
{

// Forward declarations
class Nemesis_IO_Helper;

class Nemesis_IO : public MeshInput<MeshBase>,
                   public MeshOutput<MeshBase>,
                   public ParallelObject
{

public:

  explicit
  Nemesis_IO (MeshBase & mesh, bool single_precision=false);

  virtual ~Nemesis_IO ();

  virtual void read (const std::string & base_filename) override;

  virtual void write (const std::string & base_filename) override;

  void write_timestep (const std::string & fname,
                       const EquationSystems & es,
                       const int timestep,
                       const Real time);

  void set_output_variables(const std::vector<std::string> & output_variables,
                            bool allow_empty = true);

  virtual void write_nodal_data (const std::string & fname,
                                 const std::vector<Number> & soln,
                                 const std::vector<std::string> & names) override;

  virtual void write_nodal_data (const std::string & fname,
                                 const NumericVector<Number> & parallel_soln,
                                 const std::vector<std::string> & names) override;

  void write_element_data (const EquationSystems & es);

  void verbose (bool set_verbosity);

  void write_global_data (const std::vector<Number> &,
                          const std::vector<std::string> &);

  void write_information_records (const std::vector<std::string> &);

  void append(bool val);

private:
#if defined(LIBMESH_HAVE_EXODUS_API) && defined(LIBMESH_HAVE_NEMESIS_API)
  std::unique_ptr<Nemesis_IO_Helper> nemhelper;

  int _timestep;
#endif

  bool _verbose;

  bool _append;

  void prepare_to_write_nodal_data (const std::string & fname,
                                    const std::vector<std::string> & names);

  std::vector<std::string> _output_variables;

  bool _allow_empty_variables;
};


} // namespace libMesh


#endif // LIBMESH_NEMESIS_IO_H