diff options
Diffstat (limited to 'src/Tangential_complex/include/gudhi/Tangential_complex.h')
| -rw-r--r-- | src/Tangential_complex/include/gudhi/Tangential_complex.h | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/src/Tangential_complex/include/gudhi/Tangential_complex.h b/src/Tangential_complex/include/gudhi/Tangential_complex.h index cc424810..ab203ca5 100644 --- a/src/Tangential_complex/include/gudhi/Tangential_complex.h +++ b/src/Tangential_complex/include/gudhi/Tangential_complex.h @@ -36,7 +36,6 @@ #include <Eigen/Eigen> #include <Eigen/src/Core/util/Macros.h> // for EIGEN_VERSION_AT_LEAST -#include <boost/optional.hpp> #include <boost/iterator/transform_iterator.hpp> #include <boost/range/adaptor/transformed.hpp> #include <boost/range/counting_range.hpp> @@ -56,6 +55,8 @@ #include <cmath> // for std::sqrt #include <string> #include <cstddef> // for std::size_t +#include <optional> +#include <numeric> // for std::iota #ifdef GUDHI_USE_TBB #include <tbb/parallel_for.h> @@ -345,10 +346,11 @@ class Tangential_complex { m_stars.resize(m_points.size()); m_squared_star_spheres_radii_incl_margin.resize(m_points.size(), FT(-1)); #ifdef GUDHI_TC_PERTURB_POSITION - if (m_points.empty()) + if (m_points.empty()) { m_translations.clear(); - else + } else { m_translations.resize(m_points.size(), m_k.construct_vector_d_object()(m_ambient_dim)); + } #if defined(GUDHI_USE_TBB) delete[] m_p_perturb_mutexes; m_p_perturb_mutexes = new Mutex_for_perturb[m_points.size()]; @@ -623,6 +625,11 @@ class Tangential_complex { int max_dim = -1; + // Ordered vertices to be inserted first by the create_complex method to avoid quadratic complexity. + std::vector<typename Simplex_tree_::Vertex_handle> vertices(m_points.size()); + std::iota(vertices.begin(), vertices.end(), 0); + tree.insert_batch_vertices(vertices); + // For each triangulation for (std::size_t idx = 0; idx < m_points.size(); ++idx) { // For each cell of the star @@ -994,7 +1001,7 @@ class Tangential_complex { // circumspheres of the star of "center_vertex" // If th the m_max_squared_edge_length is set the maximal radius of the "star sphere" // is at most square root of m_max_squared_edge_length - boost::optional<FT> squared_star_sphere_radius_plus_margin = m_max_squared_edge_length; + std::optional<FT> squared_star_sphere_radius_plus_margin = m_max_squared_edge_length; // Insert points until we find a point which is outside "star sphere" for (auto nn_it = ins_range.begin(); nn_it != ins_range.end(); ++nn_it) { @@ -1036,7 +1043,7 @@ class Tangential_complex { // Let's recompute squared_star_sphere_radius_plus_margin if (triangulation.current_dimension() >= tangent_space_dim) { - squared_star_sphere_radius_plus_margin = boost::none; + squared_star_sphere_radius_plus_margin = std::nullopt; // Get the incident cells and look for the biggest circumsphere std::vector<Tr_full_cell_handle> incident_cells; triangulation.incident_full_cells(center_vertex, std::back_inserter(incident_cells)); @@ -1044,7 +1051,7 @@ class Tangential_complex { cit != incident_cells.end(); ++cit) { Tr_full_cell_handle cell = *cit; if (triangulation.is_infinite(cell)) { - squared_star_sphere_radius_plus_margin = boost::none; + squared_star_sphere_radius_plus_margin = std::nullopt; break; } else { // Note that this uses the perturbed point since it uses @@ -2030,7 +2037,7 @@ class Tangential_complex { // and their center vertex Stars_container m_stars; std::vector<FT> m_squared_star_spheres_radii_incl_margin; - boost::optional<FT> m_max_squared_edge_length; + std::optional<FT> m_max_squared_edge_length; #ifdef GUDHI_TC_USE_ANOTHER_POINT_SET_FOR_TANGENT_SPACE_ESTIM Points m_points_for_tse; |