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-rw-r--r--GudhUI/utils/Rips_builder.h69
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diff --git a/GudhUI/utils/Rips_builder.h b/GudhUI/utils/Rips_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_RIPS_BUILDER_H_
-#define UTILS_RIPS_BUILDER_H_
-
-#include <boost/iterator/iterator_facade.hpp>
-
-#include <CGAL/Euclidean_distance.h>
-#include <CGAL/Orthogonal_k_neighbor_search.h>
-#include <CGAL/Search_traits_d.h>
-
-#include "utils/UI_utils.h"
-#include "model/Complex_typedefs.h"
-
-template<typename SkBlComplex> class Rips_builder {
- private:
- SkBlComplex& complex_;
-
- public:
- /**
- * @brief Modify complex to be the Rips complex
- * of its points with offset alpha.
- */
- Rips_builder(SkBlComplex& complex, double alpha) : complex_(complex) {
- complex.keep_only_vertices();
- if (alpha <= 0) return;
- compute_edges(alpha);
- }
-
- private:
- double squared_eucl_distance(const Point& p1, const Point& p2) const {
- return Geometry_trait::Squared_distance_d()(p1, p2);
- }
-
- void compute_edges(double alpha) {
- auto vertices = complex_.vertex_range();
- for (auto p = vertices.begin(); p != vertices.end(); ++p) {
- std::cout << *p << " ";
- std::cout.flush();
- for (auto q = p; ++q != vertices.end(); /**/)
- if (squared_eucl_distance(complex_.point(*p), complex_.point(*q)) < 4 * alpha * alpha)
- complex_.add_edge_without_blockers(*p, *q);
- }
- std::cout << std::endl;
- }
-};
-
-#endif // UTILS_RIPS_BUILDER_H_