cell_hex20.h
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2014 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3 
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License, or (at your option) any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
13 
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 
18 
19 
20 #ifndef LIBMESH_CELL_HEX20_H
21 #define LIBMESH_CELL_HEX20_H
22 
23 // Local includes
24 #include "libmesh/cell_hex.h"
25 
26 // C++ includes
27 #include <cstddef>
28 
29 namespace libMesh
30 {
31 
32 
33 
34 
69 // ------------------------------------------------------------
70 // Hex20 class definition
71 class Hex20 : public Hex
72 {
73 public:
74 
78  explicit
79  Hex20 (Elem* p=NULL);
80 
84  ElemType type () const { return HEX20; }
85 
89  unsigned int n_nodes() const { return 20; }
90 
94  unsigned int n_sub_elem() const { return 1; }
95 
99  virtual bool is_vertex(const unsigned int i) const;
100 
104  virtual bool is_edge(const unsigned int i) const;
105 
109  virtual bool is_face(const unsigned int i) const;
110 
111  /*
112  * @returns true iff the specified (local) node number is on the
113  * specified side
114  */
115  virtual bool is_node_on_side(const unsigned int n,
116  const unsigned int s) const;
117 
118  /*
119  * @returns true iff the specified (local) node number is on the
120  * specified edge
121  */
122  virtual bool is_node_on_edge(const unsigned int n,
123  const unsigned int e) const;
124 
125  /*
126  * @returns true iff the element map is definitely affine within
127  * numerical tolerances
128  */
129  virtual bool has_affine_map () const;
130 
134  Order default_order() const { return SECOND; }
135 
140  AutoPtr<Elem> build_side (const unsigned int i,
141  bool proxy) const;
142 
147  AutoPtr<Elem> build_edge (const unsigned int i) const;
148 
149  virtual void connectivity(const unsigned int sc,
150  const IOPackage iop,
151  std::vector<dof_id_type>& conn) const;
152 
156  unsigned int n_second_order_adjacent_vertices (const unsigned int) const
157  { return 2; }
158 
164  unsigned short int second_order_adjacent_vertex (const unsigned int n,
165  const unsigned int v) const;
166 
176  virtual std::pair<unsigned short int, unsigned short int>
177  second_order_child_vertex (const unsigned int n) const;
178 
183  static const unsigned int side_nodes_map[6][8];
184 
189  static const unsigned int edge_nodes_map[12][3];
190 
191 
192 protected:
193 
198 
199 
200 
201 #ifdef LIBMESH_ENABLE_AMR
202 
206  float embedding_matrix (const unsigned int i,
207  const unsigned int j,
208  const unsigned int k) const
209  { return _embedding_matrix[i][j][k]; }
210 
215  static const float _embedding_matrix[8][20][20];
216 
217 #endif
218 
219 };
220 
221 
222 
223 // ------------------------------------------------------------
224 // Hex20 class member functions
225 inline
227  Hex(Hex20::n_nodes(), p, _nodelinks_data)
228 {
229 }
230 
231 
232 } // namespace libMesh
233 
234 #endif // LIBMESH_CELL_HEX20_H

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