mapping_q1_eulerian.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2001 - 2018 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, 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.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------

#ifndef dealii_mapping_q1_eulerian_h
#define dealii_mapping_q1_eulerian_h

#include <deal.II/base/config.h>
#include <deal.II/base/smartpointer.h>
#include <deal.II/fe/mapping_q1.h>
#include <deal.II/dofs/dof_handler.h>


#include <array>

DEAL_II_NAMESPACE_OPEN

template <typename> class Vector;



template <int dim, typename VectorType = Vector<double>, int spacedim=dim >
class MappingQ1Eulerian : public MappingQGeneric<dim,spacedim>
{
public:
  MappingQ1Eulerian (const DoFHandler<dim,spacedim> &euler_dof_handler,
                     const VectorType               &euler_vector);

  virtual
  std::array<Point<spacedim>, GeometryInfo<dim>::vertices_per_cell>
  get_vertices (const typename Triangulation<dim,spacedim>::cell_iterator &cell) const override;

  virtual
  std::unique_ptr<Mapping<dim,spacedim>> clone () const override;

  virtual
  bool preserves_vertex_locations () const override;

  DeclException0 (ExcInactiveCell);



protected:
  virtual
  CellSimilarity::Similarity
  fill_fe_values (const typename Triangulation<dim,spacedim>::cell_iterator &cell,
                  const CellSimilarity::Similarity                           cell_similarity,
                  const Quadrature<dim>                                     &quadrature,
                  const typename Mapping<dim,spacedim>::InternalDataBase    &internal_data,
                  internal::FEValuesImplementation::MappingRelatedData<dim,spacedim>      &output_data) const override;

  virtual
  std::vector<Point<spacedim> >
  compute_mapping_support_points(const typename Triangulation<dim,spacedim>::cell_iterator &cell) const override;

  SmartPointer<const VectorType, MappingQ1Eulerian<dim,VectorType,spacedim> > euler_transform_vectors;

  SmartPointer<const DoFHandler<dim,spacedim>,MappingQ1Eulerian<dim,VectorType,spacedim> > shiftmap_dof_handler;
};

/*----------------------------------------------------------------------*/

#ifndef DOXYGEN

template <int dim, typename VectorType, int spacedim>
inline
bool
MappingQ1Eulerian<dim,VectorType,spacedim>::preserves_vertex_locations () const
{
  return false;
}

#endif // DOXYGEN

DEAL_II_NAMESPACE_CLOSE

#endif