libMesh
cell_hex8.h
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2017 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_HEX8_H
21 #define LIBMESH_CELL_HEX8_H
22 
23 // Local includes
24 #include "libmesh/cell_hex.h"
25 
26 namespace libMesh
27 {
28 
51 class Hex8 libmesh_final : public Hex
52 {
53 public:
54 
58  explicit
60  Hex(Hex8::n_nodes(), p, _nodelinks_data)
61  {}
62 
66  virtual ElemType type () const libmesh_override { return HEX8; }
67 
71  virtual unsigned int n_nodes() const libmesh_override { return 8; }
72 
76  virtual unsigned int n_sub_elem() const libmesh_override { return 1; }
77 
81  virtual bool is_vertex(const unsigned int i) const libmesh_override;
82 
86  virtual bool is_edge(const unsigned int i) const libmesh_override;
87 
91  virtual bool is_face(const unsigned int i) const libmesh_override;
92 
97  virtual bool is_node_on_side(const unsigned int n,
98  const unsigned int s) const libmesh_override;
99 
104  virtual bool is_node_on_edge(const unsigned int n,
105  const unsigned int e) const libmesh_override;
106 
111  virtual bool has_affine_map () const libmesh_override;
112 
116  virtual Order default_order() const libmesh_override { return FIRST; }
117 
122  virtual UniquePtr<Elem> build_side_ptr (const unsigned int i,
123  bool proxy) libmesh_override;
124 
129  virtual UniquePtr<Elem> build_edge_ptr (const unsigned int i) libmesh_override;
130 
131  virtual void connectivity(const unsigned int sc,
132  const IOPackage iop,
133  std::vector<dof_id_type> & conn) const libmesh_override;
134 
139  static const unsigned int side_nodes_map[6][4];
140 
145  static const unsigned int edge_nodes_map[12][2];
146 
151  virtual Real volume () const libmesh_override;
152 
153 protected:
154 
158  Node * _nodelinks_data[8];
159 
160 
161 
162 #ifdef LIBMESH_ENABLE_AMR
163 
167  virtual float embedding_matrix (const unsigned int i,
168  const unsigned int j,
169  const unsigned int k) const libmesh_override
170  { return _embedding_matrix[i][j][k]; }
171 
176  static const float _embedding_matrix[8][8][8];
177 
178  LIBMESH_ENABLE_TOPOLOGY_CACHES;
179 
180 #endif // LIBMESH_ENABLE_AMR
181 };
182 
183 } // namespace libMesh
184 
185 #endif // LIBMESH_CELL_HEX8_H
virtual float embedding_matrix(const unsigned int i, const unsigned int j, const unsigned int k) const libmesh_override
Matrix used to create the elements children.
Definition: cell_hex8.h:167
A Node is like a Point, but with more information.
Definition: node.h:52
Hex8(Elem *p=libmesh_nullptr)
Constructor.
Definition: cell_hex8.h:59
ElemType
Defines an enum for geometric element types.
The Hex is an element in 3D with 6 sides.
Definition: cell_hex.h:36
This is the base class from which all geometric element types are derived.
Definition: elem.h:89
const class libmesh_nullptr_t libmesh_nullptr
The libMesh namespace provides an interface to certain functionality in the library.
std::unique_ptr< T > UniquePtr
Definition: auto_ptr.h:46
virtual unsigned int n_nodes() const libmesh_override
Definition: cell_hex8.h:71
const dof_id_type n_nodes
Definition: tecplot_io.C:67
virtual ElemType type() const libmesh_override
Definition: cell_hex8.h:66
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
virtual Order default_order() const libmesh_override
Definition: cell_hex8.h:116
Order
defines an enum for polynomial orders.
Definition: enum_order.h:32
IOPackage
libMesh interfaces with several different software packages for the purposes of creating, reading, and writing mesh files.
virtual unsigned int n_sub_elem() const libmesh_override
Definition: cell_hex8.h:76