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diff --git a/GudhUI/utils/Lloyd_builder.h b/GudhUI/utils/Lloyd_builder.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 UTILS_LLOYD_BUILDER_H_
-#define UTILS_LLOYD_BUILDER_H_
-
-#include <vector>
-#include <list>
-
-/**
- * Iteratively puts every vertex at the center of its neighbors
- */
-template<typename SkBlComplex> class Lloyd_builder {
- private:
- SkBlComplex& complex_;
- int dim;
-
- public:
- typedef typename SkBlComplex::Vertex_handle Vertex_handle;
-
- /**
- * @brief Modify complex to be the expansion of the k-nearest neighbor
- * symetric graph.
- */
- Lloyd_builder(SkBlComplex& complex, unsigned num_iterations) : complex_(complex), dim(-1) {
- if (!complex_.empty()) {
- dim = get_dimension();
- while (num_iterations--) {
- std::list<Point> new_points;
- for (auto v : complex.vertex_range())
- new_points.push_back(barycenter_neighbors(v));
-
- auto new_points_it = new_points.begin();
- for (auto v : complex.vertex_range())
- complex_.point(v) = *(new_points_it++);
- }
- }
- }
-
- private:
- int get_dimension() {
- assert(!complex_.empty());
- for (auto v : complex_.vertex_range())
- return complex_.point(v).dimension();
- return -1;
- }
-
- Point barycenter_neighbors(Vertex_handle v) const {
- if (complex_.degree(v) == 0)
- return complex_.point(v);
-
- std::vector<double> res(dim, 0);
- unsigned num_points = 0;
- for (auto nv : complex_.vertex_range(v)) {
- ++num_points;
- const Point& point = complex_.point(nv);
- assert(point.dimension() == dim);
- for (int i = 0; i < point.dimension(); ++i)
- res[i] += point[i];
- }
- for (auto& x : res)
- x /= num_points;
- return Point(dim, res.begin(), res.end());
- }
-
- double squared_eucl_distance(const Point& p1, const Point& p2) const {
- return Geometry_trait::Squared_distance_d()(p1, p2);
- }
-};
-
-#endif // UTILS_LLOYD_BUILDER_H_