diff options
Diffstat (limited to 'src/Alpha_complex/utilities')
6 files changed, 377 insertions, 43 deletions
diff --git a/src/Alpha_complex/utilities/CMakeLists.txt b/src/Alpha_complex/utilities/CMakeLists.txt index cefc1ad6..79d9e7dd 100644 --- a/src/Alpha_complex/utilities/CMakeLists.txt +++ b/src/Alpha_complex/utilities/CMakeLists.txt @@ -46,4 +46,20 @@ if(CGAL_FOUND) install(TARGETS periodic_alpha_complex_3d_persistence DESTINATION bin) endif (NOT CGAL_WITH_EIGEN3_VERSION VERSION_LESS 4.7.0) + + if (NOT CGAL_VERSION VERSION_LESS 4.11.0) + add_executable(weighted_periodic_alpha_complex_3d_persistence weighted_periodic_alpha_complex_3d_persistence.cpp) + target_link_libraries(weighted_periodic_alpha_complex_3d_persistence ${CGAL_LIBRARY}) + if (TBB_FOUND) + target_link_libraries(weighted_periodic_alpha_complex_3d_persistence ${TBB_LIBRARIES}) + endif(TBB_FOUND) + + add_test(NAME Persistent_cohomology_example_weigted_periodic_alpha_complex_3d COMMAND $<TARGET_FILE:weighted_periodic_alpha_complex_3d_persistence> + "${CMAKE_SOURCE_DIR}/data/points/grid_10_10_10_in_0_1.off" "${CMAKE_SOURCE_DIR}/data/points/grid_10_10_10_in_0_1.weights" + "${CMAKE_SOURCE_DIR}/data/points/iso_cuboid_3_in_0_1.txt" "3" "1.0") + + install(TARGETS weighted_periodic_alpha_complex_3d_persistence DESTINATION bin) + + endif (NOT CGAL_VERSION VERSION_LESS 4.11.0) + endif(CGAL_FOUND) diff --git a/src/Alpha_complex/utilities/alpha_complex_3d_persistence.cpp b/src/Alpha_complex/utilities/alpha_complex_3d_persistence.cpp index 28daca5e..0a021a0f 100644 --- a/src/Alpha_complex/utilities/alpha_complex_3d_persistence.cpp +++ b/src/Alpha_complex/utilities/alpha_complex_3d_persistence.cpp @@ -30,8 +30,6 @@ #include <CGAL/Exact_predicates_inexact_constructions_kernel.h> #include <CGAL/Delaunay_triangulation_3.h> #include <CGAL/Alpha_shape_3.h> -#include <CGAL/Alpha_shape_vertex_base_3.h> -#include <CGAL/Alpha_shape_cell_base_3.h> #include <CGAL/iterator.h> #include <fstream> @@ -42,6 +40,7 @@ #include <utility> #include <list> #include <vector> +#include <cstdlib> #include "alpha_complex_3d_helper.h" @@ -76,7 +75,8 @@ using Simplex_tree_vertex = ST::Vertex_handle; using Alpha_shape_simplex_tree_map = std::map<Alpha_shape_3::Vertex_handle, Simplex_tree_vertex>; using Alpha_shape_simplex_tree_pair = std::pair<Alpha_shape_3::Vertex_handle, Simplex_tree_vertex>; using Simplex_tree_vector_vertex = std::vector<Simplex_tree_vertex>; -using PCOH = Gudhi::persistent_cohomology::Persistent_cohomology<ST, Gudhi::persistent_cohomology::Field_Zp>; +using Persistent_cohomology = + Gudhi::persistent_cohomology::Persistent_cohomology<ST, Gudhi::persistent_cohomology::Field_Zp>; void program_options(int argc, char *argv[], std::string &off_file_points, std::string &output_file_diag, int &coeff_field_characteristic, Filtration_value &min_persistence); @@ -132,28 +132,28 @@ int main(int argc, char **argv) { Filtration_value filtration_max = 0.0; for (auto object_iterator : the_objects) { // Retrieve Alpha shape vertex list from object - if (const Cell_handle *cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { + if (const Cell_handle* cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { vertex_list = from_cell<Vertex_list, Cell_handle>(*cell); count_cells++; if (dim_max < 3) { // Cell is of dim 3 dim_max = 3; } - } else if (const Facet *facet = CGAL::object_cast<Facet>(&object_iterator)) { + } else if (const Facet* facet = CGAL::object_cast<Facet>(&object_iterator)) { vertex_list = from_facet<Vertex_list, Facet>(*facet); count_facets++; if (dim_max < 2) { // Facet is of dim 2 dim_max = 2; } - } else if (const Edge_3 *edge = CGAL::object_cast<Edge_3>(&object_iterator)) { + } else if (const Edge_3* edge = CGAL::object_cast<Edge_3>(&object_iterator)) { vertex_list = from_edge<Vertex_list, Edge_3>(*edge); count_edges++; if (dim_max < 1) { // Edge_3 is of dim 1 dim_max = 1; } - } else if (const Vertex_handle *vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { + } else if (const Vertex_handle* vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { count_vertices++; vertex_list = from_vertex<Vertex_list, Vertex_handle>(*vertex); } @@ -179,7 +179,7 @@ int main(int argc, char **argv) { } } // Construction of the simplex_tree - Filtration_value filtr = /*std::sqrt*/ (*the_alpha_value_iterator); + Filtration_value filtr = /*std::sqrt*/(*the_alpha_value_iterator); #ifdef DEBUG_TRACES std::cout << "filtration = " << filtr << std::endl; #endif // DEBUG_TRACES @@ -192,7 +192,6 @@ int main(int argc, char **argv) { else std::cout << "This shall not happen" << std::endl; } - simplex_tree.set_dimension(dim_max); #ifdef DEBUG_TRACES std::cout << "vertices \t\t" << count_vertices << std::endl; @@ -218,7 +217,7 @@ int main(int argc, char **argv) { std::cout << "Simplex_tree dim: " << simplex_tree.dimension() << std::endl; // Compute the persistence diagram of the complex - PCOH pcoh(simplex_tree); + Persistent_cohomology pcoh(simplex_tree, true); // initializes the coefficient field for homology pcoh.init_coefficients(coeff_field_characteristic); diff --git a/src/Alpha_complex/utilities/exact_alpha_complex_3d_persistence.cpp b/src/Alpha_complex/utilities/exact_alpha_complex_3d_persistence.cpp index c69482ab..9a266418 100644 --- a/src/Alpha_complex/utilities/exact_alpha_complex_3d_persistence.cpp +++ b/src/Alpha_complex/utilities/exact_alpha_complex_3d_persistence.cpp @@ -4,7 +4,7 @@ * * Author(s): Vincent Rouvreau * - * Copyright (C) 2014 INRIA Saclay (France) + * Copyright (C) 2014 INRIA * * 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 @@ -30,8 +30,6 @@ #include <CGAL/Exact_predicates_inexact_constructions_kernel.h> #include <CGAL/Delaunay_triangulation_3.h> #include <CGAL/Alpha_shape_3.h> -#include <CGAL/Alpha_shape_vertex_base_3.h> -#include <CGAL/Alpha_shape_cell_base_3.h> #include <CGAL/iterator.h> #include <fstream> @@ -42,6 +40,7 @@ #include <utility> #include <list> #include <vector> +#include <cstdlib> #include "alpha_complex_3d_helper.h" @@ -77,7 +76,8 @@ using Simplex_tree_vertex = ST::Vertex_handle; using Alpha_shape_simplex_tree_map = std::map<Alpha_shape_3::Vertex_handle, Simplex_tree_vertex>; using Alpha_shape_simplex_tree_pair = std::pair<Alpha_shape_3::Vertex_handle, Simplex_tree_vertex>; using Simplex_tree_vector_vertex = std::vector<Simplex_tree_vertex>; -using PCOH = Gudhi::persistent_cohomology::Persistent_cohomology<ST, Gudhi::persistent_cohomology::Field_Zp>; +using Persistent_cohomology = + Gudhi::persistent_cohomology::Persistent_cohomology<ST, Gudhi::persistent_cohomology::Field_Zp>; void program_options(int argc, char *argv[], std::string &off_file_points, std::string &output_file_diag, int &coeff_field_characteristic, Filtration_value &min_persistence); @@ -133,28 +133,28 @@ int main(int argc, char **argv) { Filtration_value filtration_max = 0.0; for (auto object_iterator : the_objects) { // Retrieve Alpha shape vertex list from object - if (const Cell_handle *cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { + if (const Cell_handle* cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { vertex_list = from_cell<Vertex_list, Cell_handle>(*cell); count_cells++; if (dim_max < 3) { // Cell is of dim 3 dim_max = 3; } - } else if (const Facet *facet = CGAL::object_cast<Facet>(&object_iterator)) { + } else if (const Facet* facet = CGAL::object_cast<Facet>(&object_iterator)) { vertex_list = from_facet<Vertex_list, Facet>(*facet); count_facets++; if (dim_max < 2) { // Facet is of dim 2 dim_max = 2; } - } else if (const Edge_3 *edge = CGAL::object_cast<Edge_3>(&object_iterator)) { + } else if (const Edge_3* edge = CGAL::object_cast<Edge_3>(&object_iterator)) { vertex_list = from_edge<Vertex_list, Edge_3>(*edge); count_edges++; if (dim_max < 1) { // Edge_3 is of dim 1 dim_max = 1; } - } else if (const Vertex_handle *vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { + } else if (const Vertex_handle* vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { count_vertices++; vertex_list = from_vertex<Vertex_list, Vertex_handle>(*vertex); } @@ -181,7 +181,7 @@ int main(int argc, char **argv) { } // Construction of the simplex_tree // you can also use the_alpha_value_iterator->exact() - Filtration_value filtr = /*std::sqrt*/ CGAL::to_double(the_alpha_value_iterator->exact()); + Filtration_value filtr = /*std::sqrt*/CGAL::to_double(the_alpha_value_iterator->exact()); #ifdef DEBUG_TRACES std::cout << "filtration = " << filtr << std::endl; #endif // DEBUG_TRACES @@ -194,7 +194,6 @@ int main(int argc, char **argv) { else std::cout << "This shall not happen" << std::endl; } - simplex_tree.set_dimension(dim_max); #ifdef DEBUG_TRACES std::cout << "vertices \t\t" << count_vertices << std::endl; @@ -220,13 +219,21 @@ int main(int argc, char **argv) { std::cout << "Simplex_tree dim: " << simplex_tree.dimension() << std::endl; // Compute the persistence diagram of the complex - PCOH pcoh(simplex_tree); + Persistent_cohomology pcoh(simplex_tree, true); // initializes the coefficient field for homology pcoh.init_coefficients(coeff_field_characteristic); pcoh.compute_persistent_cohomology(min_persistence); - pcoh.output_diagram(); + // Output the diagram in filediag + if (output_file_diag.empty()) { + pcoh.output_diagram(); + } else { + std::cout << "Result in file: " << output_file_diag << std::endl; + std::ofstream out(output_file_diag); + pcoh.output_diagram(out); + out.close(); + } return 0; } diff --git a/src/Alpha_complex/utilities/periodic_alpha_complex_3d_persistence.cpp b/src/Alpha_complex/utilities/periodic_alpha_complex_3d_persistence.cpp index b480a9ec..186a58f8 100644 --- a/src/Alpha_complex/utilities/periodic_alpha_complex_3d_persistence.cpp +++ b/src/Alpha_complex/utilities/periodic_alpha_complex_3d_persistence.cpp @@ -31,8 +31,6 @@ #include <CGAL/Periodic_3_Delaunay_triangulation_traits_3.h> #include <CGAL/Periodic_3_Delaunay_triangulation_3.h> #include <CGAL/Alpha_shape_3.h> -#include <CGAL/Alpha_shape_vertex_base_3.h> -#include <CGAL/Alpha_shape_cell_base_3.h> #include <CGAL/iterator.h> #include <fstream> @@ -158,29 +156,28 @@ int main(int argc, char **argv) { Filtration_value filtration_max = 0.0; for (auto object_iterator : the_objects) { // Retrieve Alpha shape vertex list from object - if (const Cell_handle *cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { + if (const Cell_handle* cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { vertex_list = from_cell<Vertex_list, Cell_handle>(*cell); count_cells++; if (dim_max < 3) { // Cell is of dim 3 dim_max = 3; } - } else if (const Facet *facet = CGAL::object_cast<Facet>(&object_iterator)) { + } else if (const Facet* facet = CGAL::object_cast<Facet>(&object_iterator)) { vertex_list = from_facet<Vertex_list, Facet>(*facet); count_facets++; if (dim_max < 2) { // Facet is of dim 2 dim_max = 2; } - } else if (const Edge_3 *edge = CGAL::object_cast<Edge_3>(&object_iterator)) { + } else if (const Edge_3* edge = CGAL::object_cast<Edge_3>(&object_iterator)) { vertex_list = from_edge<Vertex_list, Edge_3>(*edge); count_edges++; if (dim_max < 1) { // Edge_3 is of dim 1 dim_max = 1; } - } else if (const Alpha_shape_3::Vertex_handle *vertex = - CGAL::object_cast<Alpha_shape_3::Vertex_handle>(&object_iterator)) { + } else if (const Vertex_handle* vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { count_vertices++; vertex_list = from_vertex<Vertex_list, Vertex_handle>(*vertex); } @@ -219,7 +216,6 @@ int main(int argc, char **argv) { else std::cout << "This shall not happen" << std::endl; } - simplex_tree.set_dimension(dim_max); #ifdef DEBUG_TRACES std::cout << "vertices \t\t" << count_vertices << std::endl; @@ -251,7 +247,15 @@ int main(int argc, char **argv) { pcoh.compute_persistent_cohomology(min_persistence); - pcoh.output_diagram(); + // Output the diagram in filediag + if (output_file_diag.empty()) { + pcoh.output_diagram(); + } else { + std::cout << "Result in file: " << output_file_diag << std::endl; + std::ofstream out(output_file_diag); + pcoh.output_diagram(out); + out.close(); + } return 0; } diff --git a/src/Alpha_complex/utilities/weighted_alpha_complex_3d_persistence.cpp b/src/Alpha_complex/utilities/weighted_alpha_complex_3d_persistence.cpp index 91747a8c..0e73a99b 100644 --- a/src/Alpha_complex/utilities/weighted_alpha_complex_3d_persistence.cpp +++ b/src/Alpha_complex/utilities/weighted_alpha_complex_3d_persistence.cpp @@ -27,14 +27,17 @@ #include <gudhi/Persistent_cohomology.h> #include <gudhi/Points_3D_off_io.h> +#include <CGAL/config.h> #include <CGAL/Exact_predicates_inexact_constructions_kernel.h> -#include <CGAL/Regular_triangulation_euclidean_traits_3.h> #include <CGAL/Regular_triangulation_3.h> #include <CGAL/Alpha_shape_3.h> -#include <CGAL/Alpha_shape_vertex_base_3.h> -#include <CGAL/Alpha_shape_cell_base_3.h> #include <CGAL/iterator.h> +// For CGAL < 4.11 +#if CGAL_VERSION_NR < 1041100000 +#include <CGAL/Regular_triangulation_euclidean_traits_3.h> +#endif // CGAL_VERSION_NR < 1041100000 + #include <fstream> #include <cmath> #include <string> @@ -47,19 +50,37 @@ #include "alpha_complex_3d_helper.h" -// Traits +// Alpha_shape_3 templates type definitions using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel; + +// For CGAL < 4.11 +#if CGAL_VERSION_NR < 1041100000 using Gt = CGAL::Regular_triangulation_euclidean_traits_3<Kernel>; using Vb = CGAL::Alpha_shape_vertex_base_3<Gt>; using Fb = CGAL::Alpha_shape_cell_base_3<Gt>; using Tds = CGAL::Triangulation_data_structure_3<Vb, Fb>; using Triangulation_3 = CGAL::Regular_triangulation_3<Gt, Tds>; -using Alpha_shape_3 = CGAL::Alpha_shape_3<Triangulation_3>; // From file type definition using Point_3 = Gt::Bare_point; using Weighted_point_3 = Gt::Weighted_point; +// For CGAL >= 4.11 +#else // CGAL_VERSION_NR < 1041100000 +using Rvb = CGAL::Regular_triangulation_vertex_base_3<Kernel>; +using Vb = CGAL::Alpha_shape_vertex_base_3<Kernel,Rvb>; +using Rcb = CGAL::Regular_triangulation_cell_base_3<Kernel>; +using Cb = CGAL::Alpha_shape_cell_base_3<Kernel,Rcb>; +using Tds = CGAL::Triangulation_data_structure_3<Vb,Cb>; +using Triangulation_3 = CGAL::Regular_triangulation_3<Kernel,Tds>; + +// From file type definition +using Point_3 = Triangulation_3::Bare_point; +using Weighted_point_3 = Triangulation_3::Weighted_point; +#endif // CGAL_VERSION_NR < 1041100000 + +using Alpha_shape_3 = CGAL::Alpha_shape_3<Triangulation_3>; + // filtration with alpha values needed type definition using Alpha_value_type = Alpha_shape_3::FT; using Object = CGAL::Object; @@ -160,29 +181,28 @@ int main(int argc, char **argv) { Filtration_value filtration_max = 0.0; for (auto object_iterator : the_objects) { // Retrieve Alpha shape vertex list from object - if (const Cell_handle *cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { + if (const Cell_handle* cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { vertex_list = from_cell<Vertex_list, Cell_handle>(*cell); count_cells++; if (dim_max < 3) { // Cell is of dim 3 dim_max = 3; } - } else if (const Facet *facet = CGAL::object_cast<Facet>(&object_iterator)) { + } else if (const Facet* facet = CGAL::object_cast<Facet>(&object_iterator)) { vertex_list = from_facet<Vertex_list, Facet>(*facet); count_facets++; if (dim_max < 2) { // Facet is of dim 2 dim_max = 2; } - } else if (const Edge_3 *edge = CGAL::object_cast<Edge_3>(&object_iterator)) { + } else if (const Edge_3* edge = CGAL::object_cast<Edge_3>(&object_iterator)) { vertex_list = from_edge<Vertex_list, Edge_3>(*edge); count_edges++; if (dim_max < 1) { // Edge_3 is of dim 1 dim_max = 1; } - } else if (const Alpha_shape_3::Vertex_handle *vertex = - CGAL::object_cast<Alpha_shape_3::Vertex_handle>(&object_iterator)) { + } else if (const Vertex_handle* vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { count_vertices++; vertex_list = from_vertex<Vertex_list, Vertex_handle>(*vertex); } @@ -221,7 +241,6 @@ int main(int argc, char **argv) { else std::cout << "This shall not happen" << std::endl; } - simplex_tree.set_dimension(dim_max); #ifdef DEBUG_TRACES std::cout << "vertices \t\t" << count_vertices << std::endl; @@ -253,7 +272,15 @@ int main(int argc, char **argv) { pcoh.compute_persistent_cohomology(min_persistence); - pcoh.output_diagram(); + // Output the diagram in filediag + if (output_file_diag.empty()) { + pcoh.output_diagram(); + } else { + std::cout << "Result in file: " << output_file_diag << std::endl; + std::ofstream out(output_file_diag); + pcoh.output_diagram(out); + out.close(); + } return 0; } diff --git a/src/Alpha_complex/utilities/weighted_periodic_alpha_complex_3d_persistence.cpp b/src/Alpha_complex/utilities/weighted_periodic_alpha_complex_3d_persistence.cpp new file mode 100644 index 00000000..13634ff7 --- /dev/null +++ b/src/Alpha_complex/utilities/weighted_periodic_alpha_complex_3d_persistence.cpp @@ -0,0 +1,281 @@ +/* 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): Vincent Rouvreau + * + * Copyright (C) 2014 INRIA + * + * 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/>. + */ + +#include <boost/variant.hpp> + +#include <gudhi/Simplex_tree.h> +#include <gudhi/Persistent_cohomology.h> +#include <gudhi/Points_3D_off_io.h> + +#include <CGAL/Exact_predicates_inexact_constructions_kernel.h> +#include <CGAL/Periodic_3_regular_triangulation_traits_3.h> +#include <CGAL/Periodic_3_regular_triangulation_3.h> +#include <CGAL/Alpha_shape_3.h> +#include <CGAL/iterator.h> + +#include <fstream> +#include <cmath> +#include <string> +#include <tuple> +#include <map> +#include <utility> +#include <list> +#include <vector> +#include <cstdlib> + +#include "alpha_complex_3d_helper.h" + +// Traits +using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel; +using PK = CGAL::Periodic_3_regular_triangulation_traits_3<Kernel>; + +// Vertex type +using DsVb = CGAL::Periodic_3_triangulation_ds_vertex_base_3<>; +using Vb = CGAL::Regular_triangulation_vertex_base_3<PK,DsVb>; +using AsVb = CGAL::Alpha_shape_vertex_base_3<PK,Vb>; +// Cell type +using DsCb = CGAL::Periodic_3_triangulation_ds_cell_base_3<>; +using Cb = CGAL::Regular_triangulation_cell_base_3<PK,DsCb>; +using AsCb = CGAL::Alpha_shape_cell_base_3<PK,Cb>; +using Tds = CGAL::Triangulation_data_structure_3<AsVb,AsCb>; +using P3RT3 = CGAL::Periodic_3_regular_triangulation_3<PK,Tds>; +using Alpha_shape_3 = CGAL::Alpha_shape_3<P3RT3>; + +using Point_3 = P3RT3::Bare_point; +using Weighted_point_3 = P3RT3::Weighted_point; + +// filtration with alpha values needed type definition +using Alpha_value_type = Alpha_shape_3::FT; +using Object = CGAL::Object; +using Dispatch = + CGAL::Dispatch_output_iterator<CGAL::cpp11::tuple<Object, Alpha_value_type>, + CGAL::cpp11::tuple<std::back_insert_iterator<std::vector<Object> >, + std::back_insert_iterator<std::vector<Alpha_value_type> > > >; +using Cell_handle = Alpha_shape_3::Cell_handle; +using Facet = Alpha_shape_3::Facet; +using Edge_3 = Alpha_shape_3::Edge; +using Vertex_handle = Alpha_shape_3::Vertex_handle; +using Vertex_list = std::list<Alpha_shape_3::Vertex_handle>; + +// gudhi type definition +using ST = Gudhi::Simplex_tree<Gudhi::Simplex_tree_options_fast_persistence>; +using Filtration_value = ST::Filtration_value; +using Simplex_tree_vertex = ST::Vertex_handle; +using Alpha_shape_simplex_tree_map = std::map<Alpha_shape_3::Vertex_handle, Simplex_tree_vertex>; +using Alpha_shape_simplex_tree_pair = std::pair<Alpha_shape_3::Vertex_handle, Simplex_tree_vertex>; +using Simplex_tree_vector_vertex = std::vector<Simplex_tree_vertex>; +using Persistent_cohomology = + Gudhi::persistent_cohomology::Persistent_cohomology<ST, Gudhi::persistent_cohomology::Field_Zp>; + +void usage(const std::string& progName) { + std::cerr << "Usage: " << progName << " path_to_the_OFF_file path_to_weight_file path_to_the_cuboid_file " + "coeff_field_characteristic[integer > 0] min_persistence[float >= -1.0]\n"; + exit(-1); +} + +int main(int argc, char* const argv[]) { + // program args management + if (argc != 6) { + std::cerr << "Error: Number of arguments (" << argc << ") is not correct\n"; + usage(argv[0]); + } + + int coeff_field_characteristic = atoi(argv[4]); + Filtration_value min_persistence = strtof(argv[5], nullptr); + + // Read points from file + std::string offInputFile(argv[1]); + // Read the OFF file (input file name given as parameter) and triangulate points + Gudhi::Points_3D_off_reader<Point_3> off_reader(offInputFile); + // Check the read operation was correct + if (!off_reader.is_valid()) { + std::cerr << "Unable to read file " << offInputFile << std::endl; + usage(argv[0]); + } + + // Retrieve the triangulation + std::vector<Point_3> lp = off_reader.get_point_cloud(); + + // Read weights information from file + std::ifstream weights_ifstr(argv[2]); + std::vector<Weighted_point_3> wp; + if (weights_ifstr.good()) { + double weight = 0.0; + std::size_t index = 0; + wp.reserve(lp.size()); + // Attempt read the weight in a double format, return false if it fails + while ((weights_ifstr >> weight) && (index < lp.size())) { + wp.push_back(Weighted_point_3(lp[index], weight)); + index++; + } + if (index != lp.size()) { + std::cerr << "Bad number of weights in file " << argv[2] << std::endl; + usage(argv[0]); + } + } else { + std::cerr << "Unable to read file " << argv[2] << std::endl; + usage(argv[0]); + } + + // Read iso_cuboid_3 information from file + std::ifstream iso_cuboid_str(argv[3]); + double x_min, y_min, z_min, x_max, y_max, z_max; + if (iso_cuboid_str.good()) { + iso_cuboid_str >> x_min >> y_min >> z_min >> x_max >> y_max >> z_max; + } else { + std::cerr << "Unable to read file " << argv[3] << std::endl; + usage(argv[0]); + } + + // Define the periodic cube + P3RT3 prt(PK::Iso_cuboid_3(x_min, y_min, z_min, x_max, y_max, z_max)); + // Heuristic for inserting large point sets (if pts is reasonably large) + prt.insert(wp.begin(), wp.end(), true); + // As prt won't be modified anymore switch to 1-sheeted cover if possible + if (prt.is_triangulation_in_1_sheet()) prt.convert_to_1_sheeted_covering(); + std::cout << "Periodic Delaunay computed." << std::endl; + + // alpha shape construction from points. CGAL has a strange behavior in REGULARIZED mode. This is the default mode + // Maybe need to set it to GENERAL mode + Alpha_shape_3 as(prt, 0, Alpha_shape_3::GENERAL); + + // filtration with alpha values from alpha shape + std::vector<Object> the_objects; + std::vector<Alpha_value_type> the_alpha_values; + + Dispatch disp = CGAL::dispatch_output<Object, Alpha_value_type>(std::back_inserter(the_objects), + std::back_inserter(the_alpha_values)); + + as.filtration_with_alpha_values(disp); +#ifdef DEBUG_TRACES + std::cout << "filtration_with_alpha_values returns : " << the_objects.size() << " objects" << std::endl; +#endif // DEBUG_TRACES + + Alpha_shape_3::size_type count_vertices = 0; + Alpha_shape_3::size_type count_edges = 0; + Alpha_shape_3::size_type count_facets = 0; + Alpha_shape_3::size_type count_cells = 0; + + // Loop on objects vector + Vertex_list vertex_list; + ST simplex_tree; + Alpha_shape_simplex_tree_map map_cgal_simplex_tree; + std::vector<Alpha_value_type>::iterator the_alpha_value_iterator = the_alpha_values.begin(); + int dim_max = 0; + Filtration_value filtration_max = 0.0; + for (auto object_iterator : the_objects) { + // Retrieve Alpha shape vertex list from object + if (const Cell_handle* cell = CGAL::object_cast<Cell_handle>(&object_iterator)) { + vertex_list = from_cell<Vertex_list, Cell_handle>(*cell); + count_cells++; + if (dim_max < 3) { + // Cell is of dim 3 + dim_max = 3; + } + } else if (const Facet* facet = CGAL::object_cast<Facet>(&object_iterator)) { + vertex_list = from_facet<Vertex_list, Facet>(*facet); + count_facets++; + if (dim_max < 2) { + // Facet is of dim 2 + dim_max = 2; + } + } else if (const Edge_3* edge = CGAL::object_cast<Edge_3>(&object_iterator)) { + vertex_list = from_edge<Vertex_list, Edge_3>(*edge); + count_edges++; + if (dim_max < 1) { + // Edge_3 is of dim 1 + dim_max = 1; + } + } else if (const Vertex_handle* vertex = CGAL::object_cast<Vertex_handle>(&object_iterator)) { + count_vertices++; + vertex_list = from_vertex<Vertex_list, Vertex_handle>(*vertex); + } + // Construction of the vector of simplex_tree vertex from list of alpha_shapes vertex + Simplex_tree_vector_vertex the_simplex_tree; + for (auto the_alpha_shape_vertex : vertex_list) { + Alpha_shape_simplex_tree_map::iterator the_map_iterator = map_cgal_simplex_tree.find(the_alpha_shape_vertex); + if (the_map_iterator == map_cgal_simplex_tree.end()) { + // alpha shape not found + Simplex_tree_vertex vertex = map_cgal_simplex_tree.size(); +#ifdef DEBUG_TRACES + std::cout << "vertex [" << the_alpha_shape_vertex->point() << "] not found - insert " << vertex << std::endl; +#endif // DEBUG_TRACES + the_simplex_tree.push_back(vertex); + map_cgal_simplex_tree.insert(Alpha_shape_simplex_tree_pair(the_alpha_shape_vertex, vertex)); + } else { + // alpha shape found + Simplex_tree_vertex vertex = the_map_iterator->second; +#ifdef DEBUG_TRACES + std::cout << "vertex [" << the_alpha_shape_vertex->point() << "] found in " << vertex << std::endl; +#endif // DEBUG_TRACES + the_simplex_tree.push_back(vertex); + } + } + // Construction of the simplex_tree + Filtration_value filtr = /*std::sqrt*/ (*the_alpha_value_iterator); +#ifdef DEBUG_TRACES + std::cout << "filtration = " << filtr << std::endl; +#endif // DEBUG_TRACES + if (filtr > filtration_max) { + filtration_max = filtr; + } + simplex_tree.insert_simplex(the_simplex_tree, filtr); + if (the_alpha_value_iterator != the_alpha_values.end()) + ++the_alpha_value_iterator; + else + std::cout << "This shall not happen" << std::endl; + } + +#ifdef DEBUG_TRACES + std::cout << "vertices \t\t" << count_vertices << std::endl; + std::cout << "edges \t\t" << count_edges << std::endl; + std::cout << "facets \t\t" << count_facets << std::endl; + std::cout << "cells \t\t" << count_cells << std::endl; + + std::cout << "Information of the Simplex Tree: " << std::endl; + std::cout << " Number of vertices = " << simplex_tree.num_vertices() << " "; + std::cout << " Number of simplices = " << simplex_tree.num_simplices() << std::endl << std::endl; + std::cout << " Dimension = " << simplex_tree.dimension() << " "; +#endif // DEBUG_TRACES + +#ifdef DEBUG_TRACES + std::cout << "Iterator on vertices: " << std::endl; + for (auto vertex : simplex_tree.complex_vertex_range()) { + std::cout << vertex << " "; + } +#endif // DEBUG_TRACES + + // Sort the simplices in the order of the filtration + simplex_tree.initialize_filtration(); + + std::cout << "Simplex_tree dim: " << simplex_tree.dimension() << std::endl; + // Compute the persistence diagram of the complex + Persistent_cohomology pcoh(simplex_tree, true); + // initializes the coefficient field for homology + pcoh.init_coefficients(coeff_field_characteristic); + + pcoh.compute_persistent_cohomology(min_persistence); + + pcoh.output_diagram(); + + return 0; +} |