IOSS 2.0

Ioss_FaceGenerator.h
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32
33 #ifndef IOSS_Ioss_FaceGenerator_h
34 #define IOSS_Ioss_FaceGenerator_h
35
36 #include <algorithm>
37 #include <array>
38 #include <cassert>
39 #include <cstddef> // for size_t
40 #include <unordered_set>
41 #include <utility>
42
43 namespace Ioss {
44 class Region;
45
46 class Face
47 {
48 public:
49 Face() : id_(0), elementCount_(0), sharedWithProc_(-1) {}
50 Face(size_t id, std::array<size_t, 4> conn)
51 : id_(id), elementCount_(0), sharedWithProc_(-1), connectivity_(std::move(conn))
52 {
53 }
54
55 void add_element(size_t element_id) const
56 {
57 assert(elementCount_ < 2);
58 element[elementCount_++] = element_id;
59 }
60
61 size_t id_;
62 mutable size_t element[2]{};
63 mutable int elementCount_; // Should be max of 2 solid elements...
64 mutable int sharedWithProc_;
65 std::array<size_t, 4> connectivity_{};
66 };
67
68 struct FaceHash
69 {
70 size_t operator()(const Face &face) const { return face.id_; }
71 };
72
73 struct FaceEqual
74 {
75 bool operator()(const Face &left, const Face &right) const
76 {
77 if (left.id_ != right.id_) {
78 return false;
79 }
80 // Hash (id_) is equal
81 // Check whether same vertices (can be in different order)
82 for (auto lvert : left.connectivity_) {
83 if (std::find(right.connectivity_.cbegin(), right.connectivity_.cend(), lvert) ==
84 right.connectivity_.cend()) {
85 // Not found, therefore not the same.
86 return false;
87 }
88 }
89 return true;
90 }
91 };
92
93 using FaceUnorderedSet = std::unordered_set<Face, FaceHash, FaceEqual>;
94 class FaceGenerator
95 {
96 public:
97 explicit FaceGenerator(Ioss::Region &region);
98
99 template <typename INT> void generate_faces(INT /*dummy*/);
100 FaceUnorderedSet & faces() { return faces_; }
101
102 private:
103 Ioss::Region & region_;
104 FaceUnorderedSet faces_;
105 };
106 } // namespace Ioss
107
108 #endif
Ioss::Face::elementCount_
int elementCount_
Definition: Ioss_FaceGenerator.h:63
Ioss
The main namespace for the Ioss library.
Definition: Iocgns_DatabaseIO.h:50
Ioss::FaceGenerator
Definition: Ioss_FaceGenerator.h:94
Ioss::Face::connectivity_
std::array< size_t, 4 > connectivity_
Definition: Ioss_FaceGenerator.h:65
Ioss::FaceHash
Definition: Ioss_FaceGenerator.h:68
std
Definition: json.h:1157
Ioss::Face::element
size_t element[2]
Definition: Ioss_FaceGenerator.h:62
Ioss::Face::Face
Face(size_t id, std::array< size_t, 4 > conn)
Definition: Ioss_FaceGenerator.h:50
Ioss::Face::sharedWithProc_
int sharedWithProc_
Definition: Ioss_FaceGenerator.h:64
Ioss::FaceGenerator::region_
Ioss::Region & region_
Definition: Ioss_FaceGenerator.h:103
Ioss::Face::id_
size_t id_
Definition: Ioss_FaceGenerator.h:61
Ioss::Face::add_element
void add_element(size_t element_id) const
Definition: Ioss_FaceGenerator.h:55
Ioss::FaceGenerator::faces_
FaceUnorderedSet faces_
Definition: Ioss_FaceGenerator.h:104
Ioss::Face
Definition: Ioss_FaceGenerator.h:46
Ioss::FaceHash::operator()
size_t operator()(const Face &face) const
Definition: Ioss_FaceGenerator.h:70
INT
int INT
Definition: Ioss_StructuredBlock.h:53
Ioss::Region
A grouping entity that contains other grouping entities.
Definition: Ioss_Region.h:98
Ioss::Face::Face
Face()
Definition: Ioss_FaceGenerator.h:49
Ioss::FaceUnorderedSet
std::unordered_set< Face, FaceHash, FaceEqual > FaceUnorderedSet
Definition: Ioss_FaceGenerator.h:93
Ioss::FaceGenerator::faces
FaceUnorderedSet & faces()
Definition: Ioss_FaceGenerator.h:100
Ioss::FaceEqual::operator()
bool operator()(const Face &left, const Face &right) const
Definition: Ioss_FaceGenerator.h:75
Ioss::FaceEqual
Definition: Ioss_FaceGenerator.h:73