cell_inf_hex.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2025 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can 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.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_CELL_INF_HEX_H
#define LIBMESH_CELL_INF_HEX_H

#include "libmesh/libmesh_config.h"

#ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS

// Local includes
#include "libmesh/cell_inf.h"

namespace libMesh
{

class InfHex : public InfCell
{
public:

  InfHex(const unsigned int nn, Elem * p, Node ** nodelinkdata) :
    InfCell(nn, num_sides, p, _elemlinks_data, nodelinkdata)
  {
    // Make sure the interior parent isn't undefined
    if (LIBMESH_DIM > 3)
      this->set_interior_parent(nullptr);
  }

  InfHex (InfHex &&) = delete;
  InfHex (const InfHex &) = delete;
  InfHex & operator= (const InfHex &) = delete;
  InfHex & operator= (InfHex &&) = delete;
  virtual ~InfHex() = default;

  virtual Point master_point (const unsigned int i) const override final
  {
    libmesh_assert_less(i, this->n_nodes());
    return Point(_master_points[i][0],
                 _master_points[i][1],
                 _master_points[i][2]);
  }

  static const int num_sides = 5;
  static const int num_edges = 8;
  static const int num_children = 4;

  virtual unsigned int n_sides() const override final { return 5; }

  virtual unsigned int n_vertices() const override final { return 8; }

  virtual bool is_mid_infinite_edge_node(const unsigned int i) const
    override final { return (i > 3 && i < 8); }

  virtual unsigned int n_edges() const override final { return 8; }

  virtual unsigned int n_faces() const override final { return 5; }

  virtual unsigned int n_children() const override final { return 4; }

  virtual bool is_vertex(const unsigned int i) const override final { return (i < 8); }

  virtual bool is_edge(const unsigned int i) const override final { return (i >= 8 && i < 12); }

  virtual bool is_face(const unsigned int i) const override final { return (i >= 12 && i < 17); }

  virtual bool is_child_on_side(const unsigned int c,
                                const unsigned int s) const override final;

  virtual bool is_edge_on_side(const unsigned int e,
                               const unsigned int s) const override final;

  virtual std::vector<unsigned int> sides_on_edge(const unsigned int e) const override final;

  using Elem::key;

  virtual dof_id_type key (const unsigned int s) const override;

  virtual dof_id_type low_order_key (const unsigned int s) const override;

  virtual unsigned int local_side_node(unsigned int side,
                                       unsigned int side_node) const override;

  virtual unsigned int local_edge_node(unsigned int edge,
                                       unsigned int edge_node) const override;

  virtual std::unique_ptr<Elem> side_ptr (const unsigned int i) override final;

  virtual void side_ptr (std::unique_ptr<Elem> & side, const unsigned int i) override final;

  virtual Real quality (const ElemQuality q) const override;

  virtual std::pair<Real, Real> qual_bounds (const ElemQuality q) const override;

  virtual bool contains_point (const Point & p, Real tol=TOLERANCE) const override;

  virtual unsigned int n_permutations() const override final { return 4; }

  virtual bool is_flipped() const override final;

  virtual std::vector<unsigned int> edges_adjacent_to_node(const unsigned int n) const override;

  static const unsigned int edge_sides_map[8][2];

  virtual bool on_reference_element(const Point & p,
                                    const Real eps = TOLERANCE) const override final;

protected:

  Elem * _elemlinks_data[6+(LIBMESH_DIM>3)];



  static const unsigned short int _second_order_adjacent_vertices[8][2];

  static const unsigned short int _second_order_vertex_child_number[18];

  static const unsigned short int _second_order_vertex_child_index[18];

  static const Real _master_points[18][3];

  static const unsigned int adjacent_edges_map[/*num_vertices*/8][/*max_adjacent_edges*/3];
};


} // namespace libMesh

#endif // ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS

#endif // LIBMESH_CELL_INF_HEX_H