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diff --git a/src/Alpha_complex/test/Periodic_alpha_complex_3d_unit_test.cpp b/src/Alpha_complex/test/Periodic_alpha_complex_3d_unit_test.cpp
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+/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
+ * See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
+ * Author(s): Vincent Rouvreau
+ *
+ * Copyright (C) 2015 Inria
+ *
+ * Modification(s):
+ * - YYYY/MM Author: Description of the modification
+ */
+
+#define BOOST_TEST_DYN_LINK
+#define BOOST_TEST_MODULE "alpha_complex_3d"
+#include <boost/test/unit_test.hpp>
+#include <boost/mpl/list.hpp>
+
+#include <cmath> // float comparison
+#include <limits>
+#include <string>
+#include <vector>
+#include <random>
+#include <cstddef> // for std::size_t
+
+#include <gudhi/Alpha_complex_3d.h>
+#include <gudhi/graph_simplicial_complex.h>
+#include <gudhi/Simplex_tree.h>
+#include <gudhi/Unitary_tests_utils.h>
+// to construct Alpha_complex from a OFF file of points
+#include <gudhi/Points_3D_off_io.h>
+
+#include <CGAL/Random.h>
+#include <CGAL/point_generators_3.h>
+
+using Fast_periodic_alpha_complex_3d =
+ Gudhi::alpha_complex::Alpha_complex_3d<Gudhi::alpha_complex::complexity::FAST, false, true>;
+using Safe_periodic_alpha_complex_3d =
+ Gudhi::alpha_complex::Alpha_complex_3d<Gudhi::alpha_complex::complexity::SAFE, false, true>;
+using Exact_periodic_alpha_complex_3d =
+ Gudhi::alpha_complex::Alpha_complex_3d<Gudhi::alpha_complex::complexity::EXACT, false, true>;
+
+#ifdef GUDHI_DEBUG
+typedef boost::mpl::list<Fast_periodic_alpha_complex_3d, Safe_periodic_alpha_complex_3d,
+ Exact_periodic_alpha_complex_3d>
+ periodic_variants_type_list;
+
+BOOST_AUTO_TEST_CASE_TEMPLATE(Alpha_complex_periodic_throw, Periodic_alpha_complex_3d, periodic_variants_type_list) {
+ std::cout << "Periodic alpha complex 3d exception throw" << std::endl;
+ using Point_3 = typename Periodic_alpha_complex_3d::Point_3;
+ std::vector<Point_3> p_points;
+
+ // Not important, this is not what we want to check
+ p_points.push_back(Point_3(0.0, 0.0, 0.0));
+
+ std::cout << "Check exception throw in debug mode" << std::endl;
+ // Check it throws an exception when the cuboid is not iso
+ BOOST_CHECK_THROW(Periodic_alpha_complex_3d periodic_alpha_complex(p_points, 0., 0., 0., 0.9, 1., 1.),
+ std::invalid_argument);
+ BOOST_CHECK_THROW(Periodic_alpha_complex_3d periodic_alpha_complex(p_points, 0., 0., 0., 1., 0.9, 1.),
+ std::invalid_argument);
+ BOOST_CHECK_THROW(Periodic_alpha_complex_3d periodic_alpha_complex(p_points, 0., 0., 0., 1., 1., 0.9),
+ std::invalid_argument);
+ BOOST_CHECK_THROW(Periodic_alpha_complex_3d periodic_alpha_complex(p_points, 0., 0., 0., 1.1, 1., 1.),
+ std::invalid_argument);
+ BOOST_CHECK_THROW(Periodic_alpha_complex_3d periodic_alpha_complex(p_points, 0., 0., 0., 1., 1.1, 1.),
+ std::invalid_argument);
+ BOOST_CHECK_THROW(Periodic_alpha_complex_3d periodic_alpha_complex(p_points, 0., 0., 0., 1., 1., 1.1),
+ std::invalid_argument);
+}
+#endif
+
+BOOST_AUTO_TEST_CASE(Alpha_complex_periodic) {
+ // ---------------------
+ // Fast periodic version
+ // ---------------------
+ std::cout << "Fast periodic alpha complex 3d" << std::endl;
+
+ using Creator = CGAL::Creator_uniform_3<double, Fast_periodic_alpha_complex_3d::Point_3>;
+ CGAL::Random random(7);
+ CGAL::Random_points_in_cube_3<Fast_periodic_alpha_complex_3d::Point_3, Creator> in_cube(1, random);
+ std::vector<Fast_periodic_alpha_complex_3d::Point_3> p_points;
+
+ for (int i = 0; i < 50; i++) {
+ Fast_periodic_alpha_complex_3d::Point_3 p = *in_cube++;
+ p_points.push_back(p);
+ }
+
+ Fast_periodic_alpha_complex_3d periodic_alpha_complex(p_points, -1., -1., -1., 1., 1., 1.);
+
+ Gudhi::Simplex_tree<> stree;
+ periodic_alpha_complex.create_complex(stree);
+
+ // ----------------------
+ // Exact periodic version
+ // ----------------------
+ std::cout << "Exact periodic alpha complex 3d" << std::endl;
+
+ std::vector<Exact_periodic_alpha_complex_3d::Point_3> e_p_points;
+
+ for (auto p : p_points) {
+ e_p_points.push_back(Exact_periodic_alpha_complex_3d::Point_3(p[0], p[1], p[2]));
+ }
+
+ Exact_periodic_alpha_complex_3d exact_alpha_complex(e_p_points, -1., -1., -1., 1., 1., 1.);
+
+ Gudhi::Simplex_tree<> exact_stree;
+ exact_alpha_complex.create_complex(exact_stree);
+
+ // ---------------------
+ // Compare both versions
+ // ---------------------
+ std::cout << "Exact periodic alpha complex 3d is of dimension " << exact_stree.dimension() << " - Non exact is "
+ << stree.dimension() << std::endl;
+ BOOST_CHECK(exact_stree.dimension() == stree.dimension());
+ std::cout << "Exact periodic alpha complex 3d num_simplices " << exact_stree.num_simplices() << " - Non exact is "
+ << stree.num_simplices() << std::endl;
+ BOOST_CHECK(exact_stree.num_simplices() == stree.num_simplices());
+ std::cout << "Exact periodic alpha complex 3d num_vertices " << exact_stree.num_vertices() << " - Non exact is "
+ << stree.num_vertices() << std::endl;
+ BOOST_CHECK(exact_stree.num_vertices() == stree.num_vertices());
+
+ // We cannot compare as objects from dispatcher on the alpha shape is not deterministic.
+ // cf. https://github.com/CGAL/cgal/issues/3346
+ auto sh = stree.filtration_simplex_range().begin();
+ auto sh_exact = exact_stree.filtration_simplex_range().begin();
+
+ while (sh != stree.filtration_simplex_range().end() || sh_exact != exact_stree.filtration_simplex_range().end()) {
+ GUDHI_TEST_FLOAT_EQUALITY_CHECK(stree.filtration(*sh), exact_stree.filtration(*sh_exact), 1e-14);
+
+ std::vector<int> vh(stree.simplex_vertex_range(*sh).begin(), stree.simplex_vertex_range(*sh).end());
+ std::vector<int> exact_vh(exact_stree.simplex_vertex_range(*sh_exact).begin(),
+ exact_stree.simplex_vertex_range(*sh_exact).end());
+
+ BOOST_CHECK(vh.size() == exact_vh.size());
+ ++sh;
+ ++sh_exact;
+ }
+
+ BOOST_CHECK(sh == stree.filtration_simplex_range().end());
+ BOOST_CHECK(sh_exact == exact_stree.filtration_simplex_range().end());
+
+ // ----------------------
+ // Safe periodic version
+ // ----------------------
+ std::cout << "Safe periodic alpha complex 3d" << std::endl;
+
+ std::vector<Safe_periodic_alpha_complex_3d::Point_3> s_p_points;
+
+ for (auto p : p_points) {
+ s_p_points.push_back(Safe_periodic_alpha_complex_3d::Point_3(p[0], p[1], p[2]));
+ }
+
+ Safe_periodic_alpha_complex_3d safe_alpha_complex(s_p_points, -1., -1., -1., 1., 1., 1.);
+
+ Gudhi::Simplex_tree<> safe_stree;
+ safe_alpha_complex.create_complex(safe_stree);
+
+ // ---------------------
+ // Compare both versions
+ // ---------------------
+ // We cannot compare as objects from dispatcher on the alpha shape is not deterministic.
+ // cf. https://github.com/CGAL/cgal/issues/3346
+ sh = stree.filtration_simplex_range().begin();
+ auto sh_safe = safe_stree.filtration_simplex_range().begin();
+
+ while (sh != stree.filtration_simplex_range().end() || sh_safe != safe_stree.filtration_simplex_range().end()) {
+ GUDHI_TEST_FLOAT_EQUALITY_CHECK(stree.filtration(*sh), safe_stree.filtration(*sh_safe), 1e-14);
+
+ std::vector<int> vh(stree.simplex_vertex_range(*sh).begin(), stree.simplex_vertex_range(*sh).end());
+ std::vector<int> safe_vh(safe_stree.simplex_vertex_range(*sh_safe).begin(),
+ safe_stree.simplex_vertex_range(*sh_safe).end());
+
+ BOOST_CHECK(vh.size() == safe_vh.size());
+ ++sh;
+ ++sh_safe;
+ }
+
+ BOOST_CHECK(sh == stree.filtration_simplex_range().end());
+ BOOST_CHECK(sh_safe == safe_stree.filtration_simplex_range().end());
+}