blob: 97589385916ff6dfb5f0b844aedd6e66cc4415e5 (
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
|
/* 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 CONTRACTION_POLICIES_EDGE_LENGTH_COST_H_
#define CONTRACTION_POLICIES_EDGE_LENGTH_COST_H_
#include <gudhi/Contraction/policies/Cost_policy.h>
namespace Gudhi {
namespace contraction {
/**
* @brief return a cost corresponding to the squared length of the edge
*/
template< typename EdgeProfile>
class Edge_length_cost : public Cost_policy<EdgeProfile> {
public:
typedef typename Cost_policy<EdgeProfile>::Cost_type Cost_type;
typedef typename EdgeProfile::Point Point;
Cost_type operator()(const EdgeProfile& profile, const boost::optional<Point>& placement) const override {
double res = 0;
auto p0_coord = profile.p0().begin();
auto p1_coord = profile.p1().begin();
for (; p0_coord != profile.p0().end(); p0_coord++, p1_coord++) {
res += (*p0_coord - *p1_coord) * (*p0_coord - *p1_coord);
}
return res;
}
};
} // namespace contraction
} // namespace Gudhi
#endif // CONTRACTION_POLICIES_EDGE_LENGTH_COST_H_
|
