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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): Vincent Rouvreau
+ *
+ * Copyright (C) 2016 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 INCLUDE_EUCLIDEAN_WITNESS_COMPLEX_INTERFACE_H_
+#define INCLUDE_EUCLIDEAN_WITNESS_COMPLEX_INTERFACE_H_
+
+#include <gudhi/Simplex_tree.h>
+#include <gudhi/Euclidean_witness_complex.h>
+
+#include "Simplex_tree_interface.h"
+
+#include <CGAL/Epick_d.h>
+
+#include <vector>
+#include <utility> // std::pair
+#include <iostream>
+#include <cstddef>
+
+namespace Gudhi {
+
+namespace witness_complex {
+
+
+class Euclidean_witness_complex_interface {
+ using Dynamic_kernel = CGAL::Epick_d< CGAL::Dynamic_dimension_tag >;
+ using Point_d = Dynamic_kernel::Point_d;
+
+ typedef typename Simplex_tree<>::Simplex_key Simplex_key;
+
+ public:
+ Euclidean_witness_complex_interface(const std::vector<std::vector<double>>& landmarks,
+ const std::vector<std::vector<double>>& witnesses) {
+ landmarks_.reserve(landmarks.size());
+ for (auto& landmark : landmarks)
+ landmarks_.emplace_back(landmark.begin(), landmark.end());
+ witness_complex_ = new Euclidean_witness_complex<Dynamic_kernel>(landmarks_, witnesses);
+ }
+
+ ~Euclidean_witness_complex_interface() {
+ delete witness_complex_;
+ }
+
+ void create_simplex_tree(Gudhi::Simplex_tree<>* simplex_tree, double max_alpha_square, std::size_t limit_dimension) {
+ witness_complex_->create_complex(*simplex_tree, max_alpha_square, limit_dimension);
+ simplex_tree->initialize_filtration();
+ }
+
+ void create_simplex_tree(Gudhi::Simplex_tree<>* simplex_tree, double max_alpha_square) {
+ witness_complex_->create_complex(*simplex_tree, max_alpha_square);
+ simplex_tree->initialize_filtration();
+ }
+
+ std::vector<double> get_point(unsigned vh) {
+ std::vector<double> vd;
+ if (vh < landmarks_.size()) {
+ Point_d ph = witness_complex_->get_point(vh);
+ for (auto coord = ph.cartesian_begin(); coord < ph.cartesian_end(); coord++)
+ vd.push_back(*coord);
+ }
+ return vd;
+ }
+
+ private:
+ std::vector<Point_d> landmarks_;
+ Euclidean_witness_complex<Dynamic_kernel>* witness_complex_;
+};
+
+} // namespace witness_complex
+
+} // namespace Gudhi
+
+#endif // INCLUDE_EUCLIDEAN_WITNESS_COMPLEX_INTERFACE_H_
+