GCC Code Coverage Report

Directory: gridformat/
File: gridformat/traits/mfem.hpp
Date: 2024-11-10 16:24:00
Exec Total Coverage
Lines: 30 34 88.2%
Functions: 10 10 100.0%
Branches: 8 17 47.1%
Line Branch Exec Source
1 // SPDX-FileCopyrightText: 2022-2023 Dennis Gläser <dennis.glaeser@iws.uni-stuttgart.de>
2 // SPDX-License-Identifier: MIT
3 /*!
4 * \file
5 * \ingroup PredefinedTraits
6 * \brief Traits specializations for
7 * <a href="https://docs.mfem.org/html/classmfem_1_1Mesh.html">mfem::Mesh</a>
8 */
9 #ifndef GRIDFORMAT_TRAITS_MFEM_HPP_
10 #define GRIDFORMAT_TRAITS_MFEM_HPP_
11
12 #include <cassert>
13 #include <ranges>
14 #include <vector>
15 #include <array>
16 #include <type_traits>
17
18 #include <mfem/mesh/mesh.hpp>
19
20 #include <gridformat/common/exceptions.hpp>
21 #include <gridformat/common/filtered_range.hpp>
22
23 #include <gridformat/grid/cell_type.hpp>
24 #include <gridformat/grid/traits.hpp>
25
26 namespace GridFormat::MFEM {
27
28 #ifndef DOXYGEN
29 namespace Detail {
30 9966 CellType cell_type(mfem::Element::Type ct) {
31
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 9966 switch (ct) {
32 ✗ case mfem::Element::Type::POINT: return GridFormat::CellType::vertex;
33 571 case mfem::Element::Type::SEGMENT: return GridFormat::CellType::segment;
34 6244 case mfem::Element::Type::TRIANGLE: return GridFormat::CellType::triangle;
35 1681 case mfem::Element::Type::QUADRILATERAL: return GridFormat::CellType::quadrilateral;
36 1260 case mfem::Element::Type::TETRAHEDRON: return GridFormat::CellType::tetrahedron;
37 ✗ case mfem::Element::Type::WEDGE: break;
38 ✗ case mfem::Element::Type::PYRAMID: break;
39 210 case mfem::Element::Type::HEXAHEDRON: return GridFormat::CellType::hexahedron;
40 }
41 ✗ throw NotImplemented("Support for given mfem cell type");
42 }
43 } // namespace Detail
44 #endif // DOXYGEN
45
46 using Point = int;
47 using Cell = int;
48
49 } // namespace GridFormat::MFEM
50
51 // Specializations of the traits required for the `UnstructuredGrid` concept for mfem::Mesh
52 namespace GridFormat::Traits {
53
54 template<>
55 struct Points<mfem::Mesh> {
56 29 static std::ranges::range auto get(const mfem::Mesh& mesh) {
57
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 29 return std::views::iota(0, mesh.GetNV());
58 }
59 };
60
61 template<>
62 struct Cells<mfem::Mesh> {
63 45 static std::ranges::range auto get(const mfem::Mesh& mesh) {
64
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 45 return std::views::iota(0, mesh.GetNE());
65 }
66 };
67
68 template<>
69 struct CellType<mfem::Mesh, GridFormat::MFEM::Cell> {
70 9966 static GridFormat::CellType get(const mfem::Mesh& mesh, const GridFormat::MFEM::Cell& cell) {
71 9966 return GridFormat::MFEM::Detail::cell_type(mesh.GetElement(cell)->GetType());
72 }
73 };
74
75 template<>
76 struct CellPoints<mfem::Mesh, GridFormat::MFEM::Cell> {
77 3705 static std::ranges::range decltype(auto) get(const mfem::Mesh& mesh, const GridFormat::MFEM::Cell& cell) {
78 3705 const auto element = mesh.GetElement(cell);
79 3705 auto begin = element->GetVertices();
80
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 3705 return std::ranges::subrange(begin, begin + element->GetNVertices());
81 }
82 };
83
84 template<>
85 struct PointId<mfem::Mesh, GridFormat::MFEM::Point> {
86 10580 static auto get(const mfem::Mesh&, const GridFormat::MFEM::Point& point) {
87 10580 return point;
88 }
89 };
90
91 template<>
92 struct PointCoordinates<mfem::Mesh, GridFormat::MFEM::Point> {
93 1100 static std::ranges::range decltype(auto) get(const mfem::Mesh& mesh, const GridFormat::MFEM::Point& point) {
94 1100 std::array<double, 3> coords = {};
95 1100 auto begin = mesh.GetVertex(point);
96 1100 std::copy(begin, begin + mesh.SpaceDimension(), coords.begin());
97 1100 return coords;
98 }
99 };
100
101 template<>
102 struct NumberOfPoints<mfem::Mesh> {
103 125 static std::integral auto get(const mfem::Mesh& mesh) {
104 125 return mesh.GetNV();
105 }
106 };
107
108 template<>
109 struct NumberOfCells<mfem::Mesh> {
110 110 static std::integral auto get(const mfem::Mesh& mesh) {
111 110 return mesh.GetNE();
112 }
113 };
114
115 template<>
116 struct NumberOfCellPoints<mfem::Mesh, GridFormat::MFEM::Cell> {
117 5685 static std::integral auto get(const mfem::Mesh& mesh, const GridFormat::MFEM::Cell& cell) {
118 5685 return mesh.GetElement(cell)->GetNVertices();
119 }
120 };
121
122 } // namespace GridFormat::Traits
123
124 #endif // GRIDFORMAT_TRAITS_MFEM_HPP_
125