polynomials_adini.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2009 - 2017 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.
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// ---------------------------------------------------------------------


#ifndef dealii_polynomials_adini_h
#define dealii_polynomials_adini_h

#include <deal.II/base/point.h>
#include <deal.II/base/table.h>
#include <deal.II/base/tensor.h>

DEAL_II_NAMESPACE_OPEN

class PolynomialsAdini
{
public:
  PolynomialsAdini();
  void
  compute(const Point<2> &           unit_point,
          std::vector<double> &      values,
          std::vector<Tensor<1, 2>> &grads,
          std::vector<Tensor<2, 2>> &grad_grads) const;

  double
  compute_value(const unsigned int i, const Point<2> &p) const;

  Tensor<1, 2>
  compute_grad(const unsigned int i, const Point<2> &p) const;
  Tensor<2, 2>
  compute_grad_grad(const unsigned int i, const Point<2> &p) const;
  Tensor<2, 2>
  compute_grad_grad_2(const unsigned int i, const Point<2> &p) const;

private:
  Table<2, double> coef;

  Table<2, double> dx;
  Table<2, double> dy;
  Table<2, double> dxx;
  Table<2, double> dyy;
  Table<2, double> dxy;
};



DEAL_II_NAMESPACE_CLOSE

#endif