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-rw-r--r--include/gudhi/Contraction/policies/Edge_length_cost.h56
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diff --git a/include/gudhi/Contraction/policies/Edge_length_cost.h b/include/gudhi/Contraction/policies/Edge_length_cost.h
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--- a/include/gudhi/Contraction/policies/Edge_length_cost.h
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-/* This file is part of the Gudhi Library. The Gudhi library
- * (Geometric Understanding in Higher Dimensions) is a generic C++
- * library for computational topology.
- *
- * Author(s): David Salinas
- *
- * Copyright (C) 2014 Inria
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#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_