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mesh_output.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2012 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_OUTPUT_H
#define LIBMESH_MESH_OUTPUT_H


// Local includes
#include "libmesh/libmesh_common.h"
#include "libmesh/libmesh_logging.h"
#include "libmesh/mesh_base.h"
#include "libmesh/mesh_serializer.h"

// C++ includes
#include <cstddef>
#include <limits>
#include <string>
#include <vector>

namespace libMesh
{

// Forward declares
class EquationSystems;


// ------------------------------------------------------------
// MeshOutput class definition
template <class MT>
class MeshOutput
{
 protected:

  explicit
  MeshOutput (const bool is_parallel_format = false);

  explicit
  MeshOutput (const MT&, const bool is_parallel_format = false);


 public:

  virtual ~MeshOutput ();

  virtual void write (const std::string&) = 0;

  virtual void write_equation_systems (const std::string&,
                                       const EquationSystems&,
                                       const std::set<std::string>* system_names=NULL);

  virtual void write_nodal_data (const std::string&,
                                 const std::vector<Number>&,
                                 const std::vector<std::string>&)
  { libmesh_error(); }

  unsigned int & ascii_precision ();

 protected:


  const MT& mesh() const;


  const bool _is_parallel_format;


 private:


  const MT* const _obj;

  unsigned int _ascii_precision;

  void _build_variable_names_and_solution_vector(const EquationSystems& es,
                                                 std::vector<Number>& soln,
                                                 std::vector<std::string>& names,
                                                 const std::set<std::string>* system_names=NULL);
};






// ------------------------------------------------------------
// MeshOutput inline members
template <class MT>
inline
MeshOutput<MT>::MeshOutput (const bool is_parallel_format) :
  _is_parallel_format(is_parallel_format),
  _obj(NULL),
  _ascii_precision (std::numeric_limits<Real>::digits10 + 2)
{}



template <class MT>
inline
MeshOutput<MT>::MeshOutput (const MT& obj, const bool is_parallel_format) :
  _is_parallel_format(is_parallel_format),
  _obj (&obj),
  _ascii_precision (std::numeric_limits<Real>::digits10 + 2)
{
  if (!_is_parallel_format && !this->mesh().is_serial())
    {
      if (libMesh::processor_id() == 0)
        {
          libmesh_do_once(libMesh::out <<
            "Warning:  This MeshOutput subclass only supports meshes which have been serialized!" 
            << std::endl;);
        }
//      libmesh_error();
    }
}



template <class MT>
inline
MeshOutput<MT>::~MeshOutput ()
{
}



template <class MT>
inline
void MeshOutput<MT>::write_equation_systems (const std::string& fname,
                                             const EquationSystems& es,
                                             const std::set<std::string>* system_names)
{
  START_LOG("write_equation_systems()", "MeshOutput");

  // We may need to gather and/or renumber a ParallelMesh to output
  // it, making that const qualifier in our constructor a dirty lie
  MT& my_mesh = const_cast<MT&>(*_obj);

  // A non-renumbered mesh may not have a contiguous numbering, and
  // that needs to be fixed before we can build a solution vector.
  if (my_mesh.max_elem_id() != my_mesh.n_elem() ||
      my_mesh.max_node_id() != my_mesh.n_nodes())
    {
      // If we were allowed to renumber then we should have already
      // been properly renumbered...
      libmesh_assert(!my_mesh.allow_renumbering());

      libmesh_do_once(libMesh::out <<
        "Warning:  This MeshOutput subclass only supports meshes which are contiguously renumbered!" 
        << std::endl;);

      my_mesh.allow_renumbering(true);

      my_mesh.renumber_nodes_and_elements();

      // Not sure what good going back to false will do here, the
      // renumbering horses have already left the barn...
      my_mesh.allow_renumbering(false);
    }

  MeshSerializer serialize(const_cast<MT&>(*_obj), !_is_parallel_format);

  // Build the nodal solution values & get the variable
  // names from the EquationSystems object
  std::vector<Number>      soln;
  std::vector<std::string> names;

  this->_build_variable_names_and_solution_vector(es, soln, names, system_names);
  //es.build_variable_names  (names);
  //es.build_solution_vector (soln);

  this->write_nodal_data (fname, soln, names);

  STOP_LOG("write_equation_systems()", "MeshOutput");
}



template <class MT>
inline
const MT& MeshOutput<MT>::mesh () const
{
  libmesh_assert(_obj);
  return *_obj;
}



template <class MT>
inline
unsigned int & MeshOutput<MT>::ascii_precision ()
{
  return _ascii_precision;
}


} // namespace libMesh


#endif // LIBMESH_MESH_OUTPUT_H

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Last modified: February 05 2013 19:54:47 UTC

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