DOLFINx 0.10.0.0
DOLFINx C++ interface
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Mesh.h
1// Copyright (C) 2006-2023 Anders Logg, Chris Richardson and Garth N. Wells
2//
3// This file is part of DOLFINx (https://www.fenicsproject.org)
4//
5// SPDX-License-Identifier: LGPL-3.0-or-later
6
7#pragma once
8
9#include "Geometry.h"
10#include <concepts>
11#include <dolfinx/common/MPI.h>
12#include <string>
13
14namespace dolfinx::mesh
15{
16class Topology;
17
21template <std::floating_point T>
22class Mesh
23{
24public:
27
36 template <typename V>
37 requires std::is_convertible_v<std::remove_cvref_t<V>, Geometry<T>>
38 Mesh(MPI_Comm comm, std::shared_ptr<Topology> topology, V&& geometry)
39 : _topology(std::move(topology)), _geometry(std::forward<V>(geometry)),
40 _comm(comm)
41 {
42 // Do nothing
43 }
44
47 Mesh(const Mesh& mesh) = default;
48
51 Mesh(Mesh&& mesh) = default;
52
54 ~Mesh() = default;
55
56 // Assignment operator
57 Mesh& operator=(const Mesh& mesh) = delete;
58
61 Mesh& operator=(Mesh&& mesh) = default;
62
63 // TODO: Is there any use for this? In many situations one has to get
64 // the topology of a const Mesh, which is done by
65 // Mesh::topology_mutable. Note that the python interface (calls
66 // Mesh::topology()) may still rely on it.
69 std::shared_ptr<Topology> topology() { return _topology; }
70
73 std::shared_ptr<const Topology> topology() const { return _topology; }
74
77 std::shared_ptr<Topology> topology_mutable() const { return _topology; }
78
81 Geometry<T>& geometry() { return _geometry; }
82
85 const Geometry<T>& geometry() const { return _geometry; }
86
89 MPI_Comm comm() const { return _comm.comm(); }
90
92 std::string name = "mesh";
93
94private:
95 // Mesh topology
96 // Note: This is non-const because of the current memory management
97 // within mesh::Topology. It allows to obtain a non-const Topology
98 // from a const mesh (via Mesh::topology_mutable()).
99 std::shared_ptr<Topology> _topology;
100
101 // Mesh geometry
102 Geometry<T> _geometry;
103
104 // MPI communicator
105 dolfinx::MPI::Comm _comm;
106};
107
110template <typename V>
111Mesh(MPI_Comm, std::shared_ptr<Topology>, V)
114
115} // namespace dolfinx::mesh
A duplicate MPI communicator and manage lifetime of the communicator.
Definition MPI.h:42
Geometry stores the geometry imposed on a mesh.
Definition Geometry.h:34
A Mesh consists of a set of connected and numbered mesh topological entities, and geometry data.
Definition Mesh.h:23
std::shared_ptr< Topology > topology_mutable() const
Get mesh topology if one really needs the mutable version.
Definition Mesh.h:77
const Geometry< T > & geometry() const
Get mesh geometry (const version).
Definition Mesh.h:85
std::shared_ptr< Topology > topology()
Get mesh topology.
Definition Mesh.h:69
Mesh & operator=(Mesh &&mesh)=default
Mesh(const Mesh &mesh)=default
Geometry< T > & geometry()
Get mesh geometry.
Definition Mesh.h:81
Mesh(MPI_Comm comm, std::shared_ptr< Topology > topology, V &&geometry)
Create a Mesh.
Definition Mesh.h:38
Mesh(Mesh &&mesh)=default
std::string name
Name.
Definition Mesh.h:92
Geometry< T > geometry_type
Value type.
Definition Mesh.h:26
~Mesh()=default
Destructor.
MPI_Comm comm() const
Mesh MPI communicator.
Definition Mesh.h:89
std::shared_ptr< const Topology > topology() const
Get mesh topology (const version).
Definition Mesh.h:73
Topology stores the topology of a mesh, consisting of mesh entities and connectivity (incidence relat...
Definition Topology.h:41
Mesh data structures and algorithms on meshes.
Definition DofMap.h:32