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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): Clement Jamin
+ *
+ * Copyright (C) 2016 INRIA Sophia-Antipolis (France)
+ *
+ * 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/>.
+ */
+
+#define BOOST_TEST_DYN_LINK
+#define BOOST_TEST_MODULE Spatial_searching - test Spatial_tree_data_structure
+#include <boost/test/unit_test.hpp>
+
+#include <gudhi/Spatial_tree_data_structure.h>
+
+#include <CGAL/Epick_d.h>
+#include <CGAL/Random.h>
+
+#include <array>
+#include <vector>
+
+BOOST_AUTO_TEST_CASE(test_Spatial_tree_data_structure)
+{
+ typedef CGAL::Epick_d<CGAL::Dimension_tag<4> > K;
+ typedef K::FT FT;
+ typedef K::Point_d Point;
+ typedef std::vector<Point> Points;
+
+ typedef Gudhi::spatial_searching::Spatial_tree_data_structure<
+ K, Points> Points_ds;
+
+ CGAL::Random rd;
+
+ Points points;
+ for (int i = 0 ; i < 500 ; ++i)
+ points.push_back(Point(std::array<FT,4>({rd.get_double(-1.,1),rd.get_double(-1.,1),rd.get_double(-1.,1),rd.get_double(-1.,1)})));
+
+ Points_ds points_ds(points);
+
+ std::size_t closest_pt_index =
+ points_ds.query_k_nearest_neighbors(points[10], 1, false).begin()->first;
+ BOOST_CHECK(closest_pt_index == 10);
+
+ auto kns_range = points_ds.query_k_nearest_neighbors(points[20], 10, true);
+
+ FT last_dist = -1.;
+ for (auto const& nghb : kns_range)
+ {
+ BOOST_CHECK(nghb.second > last_dist);
+ last_dist = nghb.second;
+ }
+
+ auto kfs_range = points_ds.query_k_farthest_neighbors(points[20], 10, true);
+
+ last_dist = kfs_range.begin()->second;
+ for (auto const& nghb : kfs_range)
+ {
+ BOOST_CHECK(nghb.second <= last_dist);
+ last_dist = nghb.second;
+ }
+}