DOLFIN
DOLFIN C++ interface
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HexahedronCell.h
1// Copyright (C) 2015 Chris Richardson
2//
3// This file is part of DOLFIN.
4//
5// DOLFIN is free software: you can redistribute it and/or modify
6// it under the terms of the GNU Lesser General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9//
10// DOLFIN is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU Lesser General Public License for more details.
14//
15// You should have received a copy of the GNU Lesser General Public License
16// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
17
18#ifndef __HEXAHEDRON_CELL_H
19#define __HEXAHEDRON_CELL_H
20
21#include <vector>
22#include "CellType.h"
23
24namespace dolfin
25{
26
28
29 class HexahedronCell : public CellType
30 {
31 public:
32
34 HexahedronCell() : CellType(Type::hexahedron, Type::quadrilateral) {}
35
37 bool is_simplex() const
38 { return false; }
39
41 std::size_t dim() const;
42
44 std::size_t num_entities(std::size_t dim) const;
45
47 std::size_t num_vertices(std::size_t dim) const;
48
50 std::size_t orientation(const Cell& cell) const;
51
53 void create_entities(boost::multi_array<unsigned int, 2>& e,
54 std::size_t dim,
55 const unsigned int* v) const;
56
58 double volume(const MeshEntity& triangle) const;
59
61 double circumradius(const MeshEntity& triangle) const;
62
64 double squared_distance(const Cell& cell, const Point& point) const;
65
67 double normal(const Cell& cell, std::size_t facet, std::size_t i) const;
68
70 Point normal(const Cell& cell, std::size_t facet) const;
71
73 Point cell_normal(const Cell& cell) const;
74
76 double facet_area(const Cell& cell, std::size_t facet) const;
77
79 void order(Cell& cell,
80 const std::vector<std::int64_t>& local_to_global_vertex_indices) const;
81
83 bool collides(const Cell& cell, const Point& point) const;
84
86 bool collides(const Cell& cell, const MeshEntity& entity) const;
87
89 std::string description(bool plural) const;
90
92 std::vector<std::int8_t> vtk_mapping() const
93 { return {0, 1, 3, 2, 4, 5, 7, 6}; }
94
95 };
96
97}
98
99#endif
Definition CellType.h:47
std::size_t num_vertices() const
Return number of vertices for cell.
Definition CellType.h:92
Type
Enum for different cell types.
Definition CellType.h:51
A Cell is a MeshEntity of topological codimension 0.
Definition Cell.h:43
This class implements functionality for hexahedral cell meshes.
Definition HexahedronCell.h:30
HexahedronCell()
Specify cell type and facet type.
Definition HexahedronCell.h:34
std::size_t dim() const
Return topological dimension of cell.
Definition HexahedronCell.cpp:31
std::size_t orientation(const Cell &cell) const
Return orientation of the cell.
Definition HexahedronCell.cpp:78
bool is_simplex() const
Check if cell is a simplex.
Definition HexahedronCell.h:37
Point cell_normal(const Cell &cell) const
Compute normal to given cell (viewed as embedded in 3D)
Definition HexahedronCell.cpp:192
void order(Cell &cell, const std::vector< std::int64_t > &local_to_global_vertex_indices) const
Order entities locally.
Definition HexahedronCell.cpp:225
double circumradius(const MeshEntity &triangle) const
Compute diameter of triangle.
Definition HexahedronCell.cpp:155
std::string description(bool plural) const
Return description of cell type.
Definition HexahedronCell.cpp:248
double squared_distance(const Cell &cell, const Point &point) const
Compute squared distance to given point (3D enabled)
Definition HexahedronCell.cpp:173
double facet_area(const Cell &cell, std::size_t facet) const
Compute the area/length of given facet with respect to the cell.
Definition HexahedronCell.cpp:199
std::size_t num_entities(std::size_t dim) const
Return number of entities of given topological dimension.
Definition HexahedronCell.cpp:36
double volume(const MeshEntity &triangle) const
Compute (generalized) volume (area) of triangle.
Definition HexahedronCell.cpp:127
void create_entities(boost::multi_array< unsigned int, 2 > &e, std::size_t dim, const unsigned int *v) const
Create entities e of given topological dimension from vertices v.
Definition HexahedronCell.cpp:84
bool collides(const Cell &cell, const Point &point) const
Check whether given point collides with cell.
Definition HexahedronCell.cpp:236
double normal(const Cell &cell, std::size_t facet, std::size_t i) const
Compute component i of normal of given facet with respect to the cell.
Definition HexahedronCell.cpp:180
std::vector< std::int8_t > vtk_mapping() const
Mapping of DOLFIN/UFC vertex ordering to VTK/XDMF ordering.
Definition HexahedronCell.h:92
Definition MeshEntity.h:43
Definition Point.h:41
Definition adapt.h:30