fe_rannacher_turek.h

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// ------------------------------------------------------------------------
//
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2015 - 2023 by the deal.II authors
//
// This file is part of the deal.II library.
//
// Part of the source code is dual licensed under Apache-2.0 WITH
// LLVM-exception OR LGPL-2.1-or-later. Detailed license information
// governing the source code and code contributions can be found in
// LICENSE.md and CONTRIBUTING.md at the top level directory of deal.II.
//
// ------------------------------------------------------------------------
 
 
#ifndef dealii_fe_rannacher_turek_h
#define dealii_fe_rannacher_turek_h
 
#include <deal.II/base/config.h>
 
#include <deal.II/base/polynomials_rannacher_turek.h>
 
#include <deal.II/fe/fe_data.h>
#include <deal.II/fe/fe_poly.h>
 
#include <string>
#include <vector>
 
DEAL_II_NAMESPACE_OPEN
 
 
template <int dim>
class FE_RannacherTurek : public FE_Poly<dim>
{
public:
  FE_RannacherTurek(const unsigned int order                 = 0,
                    const unsigned int n_face_support_points = 2);
 
  virtual std::string
  get_name() const override;
 
  virtual std::unique_ptr<FiniteElement<dim, dim>>
  clone() 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;
 
private:
  const unsigned int order;
 
  const unsigned int n_face_support_points;
 
  std::vector<double> weights;
 
  void
  initialize_support_points();
  std::vector<unsigned int>
  get_dpo_vector();
};
 
 
DEAL_II_NAMESPACE_CLOSE
 
#endif