From 11b195d4e26d48cdc56883957cbad16e298e43ca Mon Sep 17 00:00:00 2001 From: vrouvrea Date: Tue, 12 Jan 2016 16:07:10 +0000 Subject: Fix alpha complex remarks and bugs git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/alphashapes@957 636b058d-ea47-450e-bf9e-a15bfbe3eedb Former-commit-id: fa837fd1a4373c2322db16353d98767907f34c79 --- src/Simplex_tree/include/gudhi/Simplex_tree.h | 81 ++++++--------------------- 1 file changed, 18 insertions(+), 63 deletions(-) (limited to 'src/Simplex_tree/include/gudhi/Simplex_tree.h') diff --git a/src/Simplex_tree/include/gudhi/Simplex_tree.h b/src/Simplex_tree/include/gudhi/Simplex_tree.h index 4b04e75a..d4f9aeae 100644 --- a/src/Simplex_tree/include/gudhi/Simplex_tree.h +++ b/src/Simplex_tree/include/gudhi/Simplex_tree.h @@ -1160,43 +1160,28 @@ std::cout << "prune_above_filtration - filtration=" << filtration << std::endl; threshold_ = filtration; // Initialize filtration_vect_ if required if (filtration_vect_.empty()) { -std::cout << "prune_above_filtration - initialize_filtration" << std::endl; initialize_filtration(); } - -std::cout << "prune_above_filtration - after initialize_filtration "; -for(auto sh : filtration_vect_) { -for (auto vertex : simplex_vertex_range(sh)) { -std::cout << (int) vertex << ", "; -} -std::cout << " - filtration=" << sh->second.filtration() << " - " << &(sh->second) << std::endl; -} - + std::vector> simplex_list_to_removed; // Loop in reverse mode until threshold is reached - auto f_simplex = filtration_vect_.rbegin(); - for (; (f_simplex != filtration_vect_.rend()) && ((*f_simplex)->second.filtration() > threshold_); f_simplex++) { - -std::cout << "prune_above_filtration - remove "; -for (auto vertex : simplex_vertex_range(*f_simplex)) { -std::cout << (int) vertex << ", "; -} -std::cout << " - " << &((*f_simplex)->second) << std::endl; - - remove_maximal_simplex(*f_simplex); + // Do not erase while looping, because removing is shifting data in a flat_map + for (auto f_simplex = filtration_vect_.rbegin(); + (f_simplex != filtration_vect_.rend()) && ((*f_simplex)->second.filtration() > threshold_); + f_simplex++) { + std::vector simplex_to_remove; + for (auto vertex : simplex_vertex_range(*f_simplex)) + simplex_to_remove.insert(simplex_to_remove.begin(), vertex); + simplex_list_to_removed.push_back(simplex_to_remove); } -std::cout << "prune_above_filtration - remove STOPPED ON "; -for (auto vertex : simplex_vertex_range(*f_simplex)) { -std::cout << (int) vertex << ", "; -} -std::cout << " - filtration=" << (*f_simplex)->second.filtration() << " - " << &(*f_simplex->second) << std::endl; - if (f_simplex != filtration_vect_.rbegin()) { - // Do not forget to update filtration_vect_ - resize is enough - std::size_t new_size = filtration_vect_.size() - (f_simplex - filtration_vect_.rbegin()); -std::cout << "prune_above_filtration - resize" << new_size << std::endl; - filtration_vect_.resize(new_size); + for (auto simplex_to_remove : simplex_list_to_removed) { + Simplex_handle sh = find_simplex(simplex_to_remove); + if (sh != null_simplex()) + remove_maximal_simplex(sh); } - + // Re-initialize filtration_vect_ if dta were removed, because removing is shifting data in a flat_map + if (simplex_list_to_removed.size() > 0) + initialize_filtration(); } } } @@ -1205,6 +1190,7 @@ std::cout << "prune_above_filtration - resize" << new_size << std::endl; * @param[in] sh Simplex handle on the maximal simplex to remove. * \pre Please check the simplex has no coface before removing it. * \warning In debug mode, the exception std::invalid_argument is thrown if sh has children. + * \warning Be aware that removing is shifting data in a flat_map (initialize_filtration to be done). */ void remove_maximal_simplex(Simplex_handle sh) { // Guarantee the simplex has no children @@ -1213,49 +1199,18 @@ std::cout << "prune_above_filtration - resize" << new_size << std::endl; // Simplex is a leaf, it means the child is the Siblings owning the leaf Siblings* child = sh->second.children(); + if ((child->size() > 1) || (child == root())) { // Not alone, just remove it from members // Special case when child is the root of the simplex tree, just remove it from members -std::cout << "remove_maximal_simplex - members removal" << std::endl; child->erase(sh->first); } else { // Sibling is emptied : must be deleted, and its parent must point on his own Sibling -std::cout << "remove_maximal_simplex - members is empty" << std::endl; child->oncles()->members().at(child->parent()).assign_children(child->oncles()); delete child; } } -/***************************************************************************************************************/ - public: - /** \brief Prints the simplex_tree hierarchically. - * Since it prints the vertices recursively, one can watch its tree shape. - */ - void print_tree() { - for (auto sh = root_.members().begin(); sh != root_.members().end(); ++sh) { - std::cout << sh->first << " "; - if (has_children(sh)) { - std::cout << "("; - rec_print(sh->second.children()); - std::cout << ")"; - } - std::cout << std::endl; - } - } - - /** \brief Recursively prints the simplex_tree, using depth first search. */ - private: - void rec_print(Siblings * sib) { - for (auto sh = sib->members().begin(); sh != sib->members().end(); ++sh) { - std::cout << " " << sh->first << " "; - if (has_children(sh)) { - std::cout << "("; - rec_print(sh->second.children()); - std::cout << ")"; - } - } - } -/*****************************************************************************************************************/ private: Vertex_handle null_vertex_; /** \brief Upper bound on the filtration values of the simplices.*/ -- cgit v1.2.3