blob: 91e79b42cb2d072feade65ab1a4265bf583138f0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
* See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
* Author(s): David Salinas
*
* Copyright (C) 2014 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#ifndef SKELETON_BLOCKER_INTERNAL_TOP_FACES_H_
#define SKELETON_BLOCKER_INTERNAL_TOP_FACES_H_
#include <list>
#include <vector>
#include <set>
namespace Gudhi {
namespace skeleton_blocker {
template<typename SimplexHandle>
std::list<SimplexHandle> subfaces(SimplexHandle top_face) {
std::list<SimplexHandle> res;
if (top_face.dimension() == -1) return res;
if (top_face.dimension() == 0) {
res.push_back(top_face);
return res;
} else {
auto first_vertex = top_face.first_vertex();
top_face.remove_vertex(first_vertex);
res = subfaces(top_face);
std::list<SimplexHandle> copy = res;
for (auto& simplex : copy) {
simplex.add_vertex(first_vertex);
}
res.push_back(SimplexHandle(first_vertex));
res.splice(res.end(), copy);
return res;
}
}
/**
* add all faces of top_face in simplices_per_dimension
*/
template<typename SimplexHandle>
void register_faces(std::vector< std::set<SimplexHandle> >& simplices_per_dimension,
const SimplexHandle& top_face) {
std::list<SimplexHandle> subfaces_list = subfaces(top_face);
for (auto& simplex : subfaces_list) {
simplices_per_dimension[simplex.dimension()].insert(simplex);
}
}
} // namespace skeleton_blocker
namespace skbl = skeleton_blocker;
} // namespace Gudhi
#endif // SKELETON_BLOCKER_INTERNAL_TOP_FACES_H_
|
