Loading...
Searching...
No Matches
TriangleCell.h
// Copyright (C) 2006-2017 Anders Logg
//
// This file is part of DOLFIN.
//
// DOLFIN 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 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// Modified by Kristoffer Selim, 2008.
// Modified by Jan Blechta 2013
//
// First added: 2006-06-05
// Last changed: 2017-09-26
#ifndef __TRIANGLE_CELL_H
#define __TRIANGLE_CELL_H
#include <vector>
#include <boost/multi_array.hpp>
#include "CellType.h"
namespace dolfin
{
class TriangleCell : public CellType
{
public:
TriangleCell() : CellType(Type::triangle, Type::interval) {}
bool is_simplex() const
{ return true; }
std::size_t dim() const;
std::size_t num_entities(std::size_t dim) const;
std::size_t num_vertices(std::size_t dim) const;
std::size_t orientation(const Cell& cell) const;
void create_entities(boost::multi_array<unsigned int, 2>& e,
std::size_t dim,
const unsigned int* v) const;
double volume(const MeshEntity& triangle) const;
double circumradius(const MeshEntity& triangle) const;
double squared_distance(const Cell& cell, const Point& point) const;
static double squared_distance(const Point& point,
const Point& a,
const Point& b,
const Point& c);
double normal(const Cell& cell, std::size_t facet, std::size_t i) const;
Point normal(const Cell& cell, std::size_t facet) const;
Point cell_normal(const Cell& cell) const;
double facet_area(const Cell& cell, std::size_t facet) const;
void order(Cell& cell,
const std::vector<std::int64_t>& local_to_global_vertex_indices) const;
bool collides(const Cell& cell, const Point& point) const;
bool collides(const Cell& cell, const MeshEntity& entity) const;
std::string description(bool plural) const;
std::vector<std::int8_t> vtk_mapping() const
{ return {0, 1, 2}; }
private:
// Find local index of edge i according to ordering convention
std::size_t find_edge(std::size_t i, const Cell& cell) const;
};
}
#endif
dolfin::CellType::num_vertices
std::size_t num_vertices() const
Return number of vertices for cell.
Definition CellType.h:92
dolfin::CellType::CellType
CellType(Type cell_type, Type facet_type)
Constructor.
Definition CellType.cpp:44
dolfin::CellType::Type
Type
Enum for different cell types.
Definition CellType.h:51
dolfin::Cell
A Cell is a MeshEntity of topological codimension 0.
Definition Cell.h:43
dolfin::MeshEntity
Definition MeshEntity.h:43
dolfin::Point
Definition Point.h:41
dolfin::TriangleCell::cell_normal
Point cell_normal(const Cell &cell) const
Compute normal to given cell (viewed as embedded in 3D).
Definition TriangleCell.cpp:338
dolfin::TriangleCell::create_entities
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 TriangleCell.cpp:91
dolfin::TriangleCell::squared_distance
double squared_distance(const Cell &cell, const Point &point) const
Compute squared distance to given point (3D enabled).
Definition TriangleCell.cpp:200
dolfin::TriangleCell::circumradius
double circumradius(const MeshEntity &triangle) const
Compute diameter of triangle.
Definition TriangleCell.cpp:162
dolfin::TriangleCell::order
void order(Cell &cell, const std::vector< std::int64_t > &local_to_global_vertex_indices) const
Order entities locally.
Definition TriangleCell.cpp:388
dolfin::TriangleCell::vtk_mapping
std::vector< std::int8_t > vtk_mapping() const
Mapping of DOLFIN/UFC vertex ordering to VTK/XDMF ordering.
Definition TriangleCell.h:108
dolfin::TriangleCell::description
std::string description(bool plural) const
Return description of cell type.
Definition TriangleCell.cpp:461
dolfin::TriangleCell::is_simplex
bool is_simplex() const
Check if cell is a simplex.
Definition TriangleCell.h:44
dolfin::TriangleCell::facet_area
double facet_area(const Cell &cell, std::size_t facet) const
Compute the area/length of given facet with respect to the cell.
Definition TriangleCell.cpp:369
dolfin::TriangleCell::dim
std::size_t dim() const
Return topological dimension of cell.
Definition TriangleCell.cpp:42
dolfin::TriangleCell::TriangleCell
TriangleCell()
Specify cell type and facet type.
Definition TriangleCell.h:41
dolfin::TriangleCell::orientation
std::size_t orientation(const Cell &cell) const
Return orientation of the cell.
Definition TriangleCell.cpp:85
dolfin::TriangleCell::collides
bool collides(const Cell &cell, const Point &point) const
Check whether given point collides with cell.
Definition TriangleCell.cpp:451
dolfin::TriangleCell::volume
double volume(const MeshEntity &triangle) const
Compute (generalized) volume (area) of triangle.
Definition TriangleCell.cpp:111
dolfin::TriangleCell::num_entities
std::size_t num_entities(std::size_t dim) const
Return number of entities of given topological dimension.
Definition TriangleCell.cpp:47
dolfin::TriangleCell::normal
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 TriangleCell.cpp:288
dolfin
Definition adapt.h:30