CellType.h

Note

The documentation on this page was automatically extracted from the DOLFIN C++ code and may need to be edited or expanded.

class CellType

This class provides a common interface for different cell types. Each cell type implements mesh functionality that is specific to a certain type of cell.

enum Type

Enum for different cell types

CellType(Type cell_type, Type facet_type)

Constructor

static CellType *create(Type type)

Create cell type from type (factory function)

static CellType *create(std::string type)

Create cell type from string (factory function)

static Type string2type(std::string type)

Convert from string to cell type

static std::string type2string(Type type)

Convert from cell type to string

Type cell_type() const

Return type of cell

Type facet_type() const

Return type of cell for facets

Type entity_type(std::size_t i) const

Return type of cell for entity of dimension i

std::size_t dim() const = 0

Return topological dimension of cell

std::size_t num_entities(std::size_t dim) const = 0

Return number of entities of given topological dimension

std::size_t num_vertices() const

Return number of vertices for cell

std::size_t num_vertices(std::size_t dim) const = 0

Return number of vertices for entity of given topological dimension

std::size_t orientation(const Cell &cell) const = 0

Return orientation of the cell (assuming flat space)

std::size_t orientation(const Cell &cell, const Point &up) const

Return orientation of the cell relative to given up direction

void create_entities(boost::multi_array<unsigned int, 2> &e, std::size_t dim, const unsigned int *v) const = 0

Create entities e of given topological dimension from vertices v

double volume(const MeshEntity &entity) const = 0

Compute (generalized) volume of mesh entity

double h(const MeshEntity &entity) const

Compute greatest distance between any two vertices

double diameter(const MeshEntity &entity) const

Compute diameter of mesh entity (deprecated)

double circumradius(const MeshEntity &entity) const = 0

Compute circumradius of mesh entity

double inradius(const Cell &cell) const

Compute inradius of cell

double radius_ratio(const Cell &cell) const

Compute dim*inradius/circumradius for given cell

double squared_distance(const Cell &cell, const Point &point) const = 0

Compute squared distance to given point

double normal(const Cell &cell, std::size_t facet, std::size_t i) const = 0

Compute component i of normal of given facet with respect to the cell

Point normal(const Cell &cell, std::size_t facet) const = 0

Compute of given facet with respect to the cell

Point cell_normal(const Cell &cell) const = 0

Compute normal to given cell (viewed as embedded in 3D)

double facet_area(const Cell &cell, std::size_t facet) const = 0

Compute the area/length of given facet with respect to the cell

void order(Cell &cell, const std::vector<std::size_t> &local_to_global_vertex_indices) const = 0

Order entities locally

bool ordered(const Cell &cell, const std::vector<std::size_t> &local_to_global_vertex_indices) const

Check if entities are ordered

bool collides(const Cell &cell, const Point &point) const = 0

Check whether given point collides with cell

bool collides(const Cell &cell, const MeshEntity &entity) const = 0

Check whether given entity collides with cell

std::vector<double> triangulate_intersection(const Cell &c0, const Cell &c1) const = 0

Compute triangulation of intersection of two cells

std::string description(bool plural) const = 0

Return description of cell type

std::vector<std::int8_t> vtk_mapping() const = 0

Mapping of DOLFIN/UFC vertex ordering to VTK/XDMF ordering