fe_dgp.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2002 - 2015 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__fe_dgp_h
#define dealii__fe_dgp_h

#include <deal.II/base/config.h>
#include <deal.II/base/polynomial_space.h>
#include <deal.II/fe/fe_poly.h>

DEAL_II_NAMESPACE_OPEN

template <int dim, int spacedim> class MappingQ;


template <int dim, int spacedim=dim>
class FE_DGP : public FE_Poly<PolynomialSpace<dim>,dim,spacedim>
{
public:
  FE_DGP (const unsigned int p);

  virtual std::string get_name () const;

  virtual
  std::vector<std::pair<unsigned int, unsigned int> >
  hp_vertex_dof_identities (const FiniteElement<dim,spacedim> &fe_other) const;

  virtual
  std::vector<std::pair<unsigned int, unsigned int> >
  hp_line_dof_identities (const FiniteElement<dim,spacedim> &fe_other) const;

  virtual
  std::vector<std::pair<unsigned int, unsigned int> >
  hp_quad_dof_identities (const FiniteElement<dim,spacedim> &fe_other) const;

  virtual bool hp_constraints_are_implemented () const;

  virtual
  FiniteElementDomination::Domination
  compare_for_face_domination (const FiniteElement<dim,spacedim> &fe_other) const;

  virtual void
  get_face_interpolation_matrix (const FiniteElement<dim,spacedim> &source,
                                 FullMatrix<double>       &matrix) const;

  virtual void
  get_subface_interpolation_matrix (const FiniteElement<dim,spacedim> &source,
                                    const unsigned int        subface,
                                    FullMatrix<double>       &matrix) const;

  virtual bool has_support_on_face (const unsigned int shape_index,
                                    const unsigned int face_index) const;

  virtual std::size_t memory_consumption () const;


  struct Matrices
  {
    static const double *const projection_matrices[][GeometryInfo<dim>::max_children_per_cell];

    static const unsigned int n_projection_matrices;
  };

  virtual std::pair<Table<2,bool>, std::vector<unsigned int> >
  get_constant_modes () const;

protected:

  virtual FiniteElement<dim,spacedim> *clone() const;

private:

  static std::vector<unsigned int> get_dpo_vector (const unsigned int degree);
};

/* @} */
#ifndef DOXYGEN


// declaration of explicit specializations of member variables, if the
// compiler allows us to do that (the standard says we must)
#ifndef DEAL_II_MEMBER_VAR_SPECIALIZATION_BUG
template <>
const double *const FE_DGP<1>::Matrices::projection_matrices[][GeometryInfo<1>::max_children_per_cell];

template <>
const unsigned int FE_DGP<1>::Matrices::n_projection_matrices;

template <>
const double *const FE_DGP<2>::Matrices::projection_matrices[][GeometryInfo<2>::max_children_per_cell];

template <>
const unsigned int FE_DGP<2>::Matrices::n_projection_matrices;

template <>
const double *const FE_DGP<3>::Matrices::projection_matrices[][GeometryInfo<3>::max_children_per_cell];

template <>
const unsigned int FE_DGP<3>::Matrices::n_projection_matrices;

//codimension 1
template <>
const double *const FE_DGP<1,2>::Matrices::projection_matrices[][GeometryInfo<1>::max_children_per_cell];

template <>
const unsigned int FE_DGP<1,2>::Matrices::n_projection_matrices;

template <>
const double *const FE_DGP<2,3>::Matrices::projection_matrices[][GeometryInfo<2>::max_children_per_cell];

template <>
const unsigned int FE_DGP<2,3>::Matrices::n_projection_matrices;

#endif

#endif // DOXYGEN

DEAL_II_NAMESPACE_CLOSE

#endif