cell_types.h

// Copyright (C) 2019-2020 Garth N. Wells
//
// This file is part of DOLFINx (https://www.fenicsproject.org)
//
// SPDX-License-Identifier:    LGPL-3.0-or-later
 
#pragma once
 
#include <array>
#include <basix/cell.h>
#include <dolfinx/graph/AdjacencyList.h>
#include <map>
#include <set>
#include <string>
#include <vector>
 
namespace dolfinx::mesh
{
 
enum class CellType : int
{
  // NOTE: Simplex cells have index > 0, see mesh::is_simplex
  point = 1,
  interval = 2,
  triangle = 3,
  tetrahedron = 4,
  quadrilateral = -4,
  pyramid = -5,
  prism = -6,
  hexahedron = -8
};
 
std::string to_string(CellType type);
 
CellType to_type(const std::string& cell);
 
CellType cell_entity_type(CellType type, int d, int index);
 
CellType cell_facet_type(CellType type, int index);
 
graph::AdjacencyList<int> get_entity_vertices(CellType type, int dim);
 
graph::AdjacencyList<int> get_sub_entities(CellType type, int dim0, int dim1);
 
int cell_dim(CellType type);
 
int cell_num_entities(CellType type, int dim);
 
bool is_simplex(CellType type);
 
int num_cell_vertices(CellType type);
 
// [dim, entity] -> closure{sub_dim, (sub_entities)}
 
std::map<std::array<int, 2>, std::vector<std::set<int>>>
cell_entity_closure(CellType cell_type);
 
basix::cell::type cell_type_to_basix_type(CellType celltype);
 
CellType cell_type_from_basix_type(basix::cell::type celltype);
 
} // namespace dolfinx::mesh