fe_rannacher_turek.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2015 - 2016 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_rannacher_turek_h
#define dealii__fe_rannacher_turek_h

#include <deal.II/base/polynomials_rannacher_turek.h>
#include <deal.II/fe/fe_poly.h>
#include <deal.II/fe/fe_base.h>
#include <string>
#include <vector>

DEAL_II_NAMESPACE_OPEN


template <int dim>
class FE_RannacherTurek : public FE_Poly<PolynomialsRannacherTurek<dim>, dim>
{
public:
  FE_RannacherTurek(const unsigned int degree = 0,
                    const unsigned int n_face_support_points = 2);

  virtual std::string get_name() const;
  virtual FiniteElement<dim> *clone() const;

  virtual void interpolate(
    std::vector<double> &local_dofs,
    const std::vector<double> &values) const;
  virtual void interpolate(
    std::vector<double> &local_dofs,
    const std::vector<Vector<double> > &values,
    unsigned int offset) const;
  virtual void interpolate(
    std::vector<double> &local_dofs,
    const VectorSlice<const std::vector<std::vector<double> > > &values) const;
private:
  const unsigned int degree;
  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