diff options
Diffstat (limited to 'src/Cech_complex/example/cech_complex_example_from_points.cpp')
| -rw-r--r-- | src/Cech_complex/example/cech_complex_example_from_points.cpp | 47 |
1 files changed, 32 insertions, 15 deletions
diff --git a/src/Cech_complex/example/cech_complex_example_from_points.cpp b/src/Cech_complex/example/cech_complex_example_from_points.cpp index 1a1f708c..78861951 100644 --- a/src/Cech_complex/example/cech_complex_example_from_points.cpp +++ b/src/Cech_complex/example/cech_complex_example_from_points.cpp @@ -1,6 +1,8 @@ #include <gudhi/Cech_complex.h> #include <gudhi/Simplex_tree.h> +#include <CGAL/Epeck_d.h> // For EXACT or SAFE version + #include <iostream> #include <string> #include <vector> @@ -8,32 +10,47 @@ int main() { // Type definitions - using Point_cloud = std::vector<std::array<double, 2>>; using Simplex_tree = Gudhi::Simplex_tree<Gudhi::Simplex_tree_options_fast_persistence>; using Filtration_value = Simplex_tree::Filtration_value; - using Cech_complex = Gudhi::cech_complex::Cech_complex<Simplex_tree, Point_cloud>; + using Kernel = CGAL::Epeck_d<CGAL::Dynamic_dimension_tag>; + using FT = typename Kernel::FT; + using Point = typename Kernel::Point_d; + using Point_cloud = std::vector<Point>; + using Cech_complex = Gudhi::cech_complex::Cech_complex<Simplex_tree, Point_cloud, Kernel, Simplex_tree>; Point_cloud points; - points.push_back({1., 0.}); // 0 - points.push_back({0., 1.}); // 1 - points.push_back({2., 1.}); // 2 - points.push_back({3., 2.}); // 3 - points.push_back({0., 3.}); // 4 - points.push_back({3. + std::sqrt(3.), 3.}); // 5 - points.push_back({1., 4.}); // 6 - points.push_back({3., 4.}); // 7 - points.push_back({2., 4. + std::sqrt(3.)}); // 8 - points.push_back({0., 4.}); // 9 - points.push_back({-0.5, 2.}); // 10 + + std::vector<FT> point0({1., 0.}); + points.emplace_back(point0.begin(), point0.end()); + std::vector<FT> point1({0., 1.}); + points.emplace_back(point1.begin(), point1.end()); + std::vector<FT> point2({2., 1.}); + points.emplace_back(point2.begin(), point2.end()); + std::vector<FT> point3({3., 2.}); + points.emplace_back(point3.begin(), point3.end()); + std::vector<FT> point4({0., 3.}); + points.emplace_back(point4.begin(), point4.end()); + std::vector<FT> point5({3. + std::sqrt(3.), 3.}); + points.emplace_back(point5.begin(), point5.end()); + std::vector<FT> point6({1., 4.}); + points.emplace_back(point6.begin(), point6.end()); + std::vector<FT> point7({3., 4.}); + points.emplace_back(point7.begin(), point7.end()); + std::vector<FT> point8({2., 4. + std::sqrt(3.)}); + points.emplace_back(point8.begin(), point8.end()); + std::vector<FT> point9({0., 4.}); + points.emplace_back(point9.begin(), point9.end()); + std::vector<FT> point10({-0.5, 2.}); + points.emplace_back(point10.begin(), point10.end()); // ---------------------------------------------------------------------------- // Init of a Cech complex from points // ---------------------------------------------------------------------------- - Filtration_value max_radius = 1.; + Filtration_value max_radius = 100.; //100.; Cech_complex cech_complex_from_points(points, max_radius); Simplex_tree stree; - cech_complex_from_points.create_complex(stree, 2); + cech_complex_from_points.create_complex(stree, 6); //6 // ---------------------------------------------------------------------------- // Display information about the one skeleton Cech complex // ---------------------------------------------------------------------------- |