fe_abf.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2003 - 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.md at
// the top level directory of deal.II.
//
// ---------------------------------------------------------------------

#ifndef dealii_fe_abf_h
#define dealii_fe_abf_h

#include <deal.II/base/config.h>

#include <deal.II/base/geometry_info.h>
#include <deal.II/base/polynomial.h>
#include <deal.II/base/polynomials_abf.h>
#include <deal.II/base/table.h>
#include <deal.II/base/tensor_product_polynomials.h>

#include <deal.II/fe/fe.h>
#include <deal.II/fe/fe_poly_tensor.h>

#include <vector>

DEAL_II_NAMESPACE_OPEN



template <int dim>
class FE_ABF : public FE_PolyTensor<PolynomialsABF<dim>, dim>
{
public:
  FE_ABF(const unsigned int p);

  virtual std::string
  get_name() const override;

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

  // documentation inherited from the base class
  virtual void
  convert_generalized_support_point_values_to_dof_values(
    const std::vector<Vector<double>> &support_point_values,
    std::vector<double> &              nodal_values) const override;

  virtual std::size_t
  memory_consumption() const override;

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

private:
  const unsigned int rt_order;

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

  void
  initialize_support_points(const unsigned int rt_degree);

  void
  initialize_restriction();

  class InternalData : public FiniteElement<dim>::InternalDataBase
  {
  public:
    std::vector<std::vector<Tensor<1, dim>>> shape_values;

    std::vector<std::vector<Tensor<2, dim>>> shape_gradients;
  };

  Table<2, double> boundary_weights;
  Table<3, double> interior_weights;



  Table<2, double> boundary_weights_abf;
  Table<3, double> interior_weights_abf;


  template <int dim1>
  friend class FE_ABF;
};



DEAL_II_NAMESPACE_CLOSE

#endif