fe_compute_data.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_FE_COMPUTE_DATA_H
#define LIBMESH_FE_COMPUTE_DATA_H
 
// Local includes
#include "libmesh/libmesh.h"
#include "libmesh/fe_base.h" // required for the type OutputGradient.
 
// C++ includes
#include <vector>
 
namespace libMesh
{
 
// Forward declarations
class EquationSystems;
class Point;
 
class FEComputeData
{
public:
  FEComputeData (const EquationSystems & es,
                 const Point & pin) :
    equation_systems(es),
    p(pin),
    _need_dshape(false)
  {
    this->clear();
  }
 
  const EquationSystems & equation_systems;
 
  const Point & p;
 
  std::vector<Number> shape;
 
  std::vector<Gradient> dshape;
 
  std::vector<std::vector<Real>> local_transform;
 
#ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
  Real phase;
 
  Real speed;
 
  Number frequency;
#endif
 
  void clear ();
 
  void init ();
 
  void enable_derivative ();
 
  void disable_derivative ()
  {_need_dshape=false; }
 
  bool need_derivative ()
  {return _need_dshape; }
 
private:
  bool _need_dshape;
 
};
 
 
} // namespace libMesh
 
#endif // LIBMESH_FE_COMPUTE_DATA_H