libMesh
cell_hex.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_HEX_H
21 #define LIBMESH_CELL_HEX_H
22 
23 // Local includes
24 #include "libmesh/cell.h"
25 
26 namespace libMesh
27 {
28 
36 class Hex : public Cell
37 {
38 public:
39 
44  Hex(const unsigned int nn, Elem * p, Node ** nodelinkdata) :
45  Cell(nn, Hex::n_sides(), p, _elemlinks_data, nodelinkdata)
46  {
47  // Make sure the interior parent isn't undefined
48  if (LIBMESH_DIM > 3)
50  }
51 
52 
57  virtual Point master_point (const unsigned int i) const libmesh_override
58  {
59  libmesh_assert_less(i, this->n_nodes());
60  return Point(_master_points[i][0],
61  _master_points[i][1],
62  _master_points[i][2]);
63  }
64 
68  virtual unsigned int n_sides() const libmesh_override { return 6; }
69 
73  virtual unsigned int n_vertices() const libmesh_override { return 8; }
74 
78  virtual unsigned int n_edges() const libmesh_override { return 12; }
79 
83  virtual unsigned int n_faces() const libmesh_override { return 6; }
84 
88  virtual unsigned int n_children() const libmesh_override { return 8; }
89 
93  virtual bool is_child_on_side(const unsigned int c,
94  const unsigned int s) const libmesh_override;
95 
99  virtual bool is_edge_on_side(const unsigned int e,
100  const unsigned int s) const libmesh_override;
101 
106  virtual unsigned int opposite_side(const unsigned int s) const libmesh_override;
107 
113  virtual unsigned int opposite_node(const unsigned int n,
114  const unsigned int s) const libmesh_override;
115 
119  using Elem::key;
120 
126  virtual dof_id_type key (const unsigned int s) const libmesh_override;
127 
131  virtual unsigned int which_node_am_i(unsigned int side,
132  unsigned int side_node) const libmesh_override;
133 
137  virtual UniquePtr<Elem> side_ptr (const unsigned int i) libmesh_override;
138 
143  virtual Real quality (const ElemQuality q) const libmesh_override;
144 
150  virtual std::pair<Real, Real> qual_bounds (const ElemQuality q) const libmesh_override;
151 
152 
153 protected:
154 
158  Elem * _elemlinks_data[7+(LIBMESH_DIM>3)];
159 
167  static const unsigned short int _second_order_adjacent_vertices[12][2];
168 
172  static const unsigned short int _second_order_vertex_child_number[27];
173 
177  static const unsigned short int _second_order_vertex_child_index[27];
178 
182  static const Real _master_points[27][3];
183 
188  static const int _child_node_lookup[8][27];
189 };
190 
191 } // namespace libMesh
192 
193 #endif // LIBMESH_CELL_HEX_H
A Node is like a Point, but with more information.
Definition: node.h:52
static const Real _master_points[27][3]
Master element node locations.
Definition: cell_hex.h:182
UniquePtr< Elem > side(const unsigned int i) const
Definition: elem.h:2105
The Hex is an element in 3D with 6 sides.
Definition: cell_hex.h:36
static const unsigned short int _second_order_adjacent_vertices[12][2]
Matrix that tells which vertices define the location of mid-side (or second-order) nodes...
Definition: cell_hex.h:167
This is the base class from which all geometric element types are derived.
Definition: elem.h:89
const class libmesh_nullptr_t libmesh_nullptr
Elem * _elemlinks_data[7+(LIBMESH_DIM >3)]
Data for links to parent/neighbor/interior_parent elements.
Definition: cell_hex.h:158
The libMesh namespace provides an interface to certain functionality in the library.
virtual unsigned int n_children() const libmesh_override
Definition: cell_hex.h:88
void set_interior_parent(Elem *p)
Sets the pointer to the element&#39;s interior_parent.
Definition: elem.C:1003
virtual std::pair< Real, Real > qual_bounds(const ElemQuality q) const libmesh_override
Definition: cell_hex.C:332
virtual unsigned int opposite_node(const unsigned int n, const unsigned int s) const libmesh_override
Definition: cell_hex.C:153
std::unique_ptr< T > UniquePtr
Definition: auto_ptr.h:46
virtual bool is_child_on_side(const unsigned int c, const unsigned int s) const libmesh_override
Definition: cell_hex.C:111
virtual unsigned int n_nodes() const =0
virtual dof_id_type key() const
Definition: elem.C:503
static const int _child_node_lookup[8][27]
Lookup table from child id, child node id to "possible node location" (a simple dictionary-index in a...
Definition: cell_hex.h:188
The Cell is an abstract element type that lives in three dimensions.
Definition: cell.h:38
virtual unsigned int which_node_am_i(unsigned int side, unsigned int side_node) const libmesh_override
Definition: cell_hex.C:86
virtual unsigned int n_faces() const libmesh_override
Definition: cell_hex.h:83
virtual bool is_edge_on_side(const unsigned int e, const unsigned int s) const libmesh_override
Definition: cell_hex.C:132
virtual UniquePtr< Elem > side_ptr(const unsigned int i) libmesh_override
Definition: cell_hex.C:97
virtual unsigned int n_vertices() const libmesh_override
Definition: cell_hex.h:73
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
virtual Real quality(const ElemQuality q) const libmesh_override
Definition: cell_hex.C:189
static const unsigned short int _second_order_vertex_child_number[27]
Vector that names a child sharing each second order node.
Definition: cell_hex.h:172
Hex(const unsigned int nn, Elem *p, Node **nodelinkdata)
Default brick element, takes number of nodes and parent.
Definition: cell_hex.h:44
static const unsigned short int _second_order_vertex_child_index[27]
Vector that names the child vertex index for each second order node.
Definition: cell_hex.h:177
ElemQuality
Defines an enum for element quality metrics.
virtual Point master_point(const unsigned int i) const libmesh_override
Definition: cell_hex.h:57
virtual unsigned int n_edges() const libmesh_override
Definition: cell_hex.h:78
A Point defines a location in LIBMESH_DIM dimensional Real space.
Definition: point.h:38
virtual unsigned int n_sides() const libmesh_override
Definition: cell_hex.h:68
virtual unsigned int opposite_side(const unsigned int s) const libmesh_override
Definition: cell_hex.C:144
uint8_t dof_id_type
Definition: id_types.h:64