diff options
author | vrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2015-06-15 09:31:02 +0000 |
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committer | vrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb> | 2015-06-15 09:31:02 +0000 |
commit | 17fd245908ba07d6bad974efa0be1ec6093262ec (patch) | |
tree | 6396fe4968ec0eab52376790a86321f7b4fb1b79 /src/Alpha_complex/example | |
parent | 853eb92146a6d473337fed8ef57f77bee8efd356 (diff) |
Alpha_shapes renamed Alpha_complex
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/alphashapes@614 636b058d-ea47-450e-bf9e-a15bfbe3eedb
Former-commit-id: ede5d1c1175f9d314e23bc0b76f7376b3de90c93
Diffstat (limited to 'src/Alpha_complex/example')
4 files changed, 197 insertions, 0 deletions
diff --git a/src/Alpha_complex/example/CMakeLists.txt b/src/Alpha_complex/example/CMakeLists.txt new file mode 100644 index 00000000..582a9322 --- /dev/null +++ b/src/Alpha_complex/example/CMakeLists.txt @@ -0,0 +1,31 @@ +cmake_minimum_required(VERSION 2.6) +project(GUDHIAlphaShapesExample) + +# need CGAL 4.7 +# cmake -DCGAL_DIR=~/workspace/CGAL-4.7-Ic-41 ../../.. +if(CGAL_FOUND) + if (NOT CGAL_VERSION VERSION_LESS 4.7.0) + message(STATUS "CGAL version: ${CGAL_VERSION}.") + + include( ${CGAL_USE_FILE} ) + + find_package(Eigen3 3.1.0) + if (EIGEN3_FOUND) + message(STATUS "Eigen3 version: ${EIGEN3_VERSION}.") + include( ${EIGEN3_USE_FILE} ) + + add_definitions(-DDEBUG_TRACES) + + add_executable ( dtoffrw Delaunay_triangulation_off_rw.cpp ) + target_link_libraries(dtoffrw ${Boost_SYSTEM_LIBRARY} ${CGAL_LIBRARY}) + add_test(dtoffrw_tore3D ${CMAKE_CURRENT_BINARY_DIR}/dtoffrw ${CMAKE_SOURCE_DIR}/data/points/tore3D_1307.off 3) + + add_executable ( stfromdt Simplex_tree_from_delaunay_triangulation.cpp ) + target_link_libraries(stfromdt ${Boost_SYSTEM_LIBRARY} ${CGAL_LIBRARY}) + else() + message(WARNING "Eigen3 not found. Version 3.1.0 is required for Alpha shapes feature.") + endif() + else() + message(WARNING "CGAL version: ${CGAL_VERSION} is too old to compile Alpha shapes feature. Version 4.6.0 is required.") + endif () +endif() diff --git a/src/Alpha_complex/example/Delaunay_triangulation_off_rw.cpp b/src/Alpha_complex/example/Delaunay_triangulation_off_rw.cpp new file mode 100644 index 00000000..fe889ec0 --- /dev/null +++ b/src/Alpha_complex/example/Delaunay_triangulation_off_rw.cpp @@ -0,0 +1,79 @@ +/* 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 Saclay (France) + * + * 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/>. + */ + +// to construct a Delaunay_triangulation from a OFF file +#include "gudhi/Alpha_shapes/Delaunay_triangulation_off_io.h" + +#include <CGAL/Delaunay_triangulation.h> +#include <CGAL/Epick_d.h> +#include <CGAL/point_generators_d.h> +#include <CGAL/algorithm.h> +#include <CGAL/assertions.h> + +#include <iostream> +#include <iterator> +#include <vector> + +#include <stdio.h> +#include <stdlib.h> +#include <string> + +// Use dynamic_dimension_tag for the user to be able to set dimension +typedef CGAL::Epick_d< CGAL::Dynamic_dimension_tag > K; +typedef CGAL::Delaunay_triangulation<K> T; +// The triangulation uses the default instanciation of the +// TriangulationDataStructure template parameter + +void usage(char * const progName) { + std::cerr << "Usage: " << progName << " inputFile.off dimension outputFile.off" << std::endl; + exit(-1); // ----- >> +} + +int main(int argc, char **argv) { + if (argc != 4) { + std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl; + usage(argv[0]); + } + + int dimension = 0; + int returnedScanValue = sscanf(argv[2], "%d", &dimension); + if ((returnedScanValue == EOF) || (dimension <= 0)) { + std::cerr << "Error: " << argv[2] << " is not correct" << std::endl; + usage(argv[0]); + } + + T dt(dimension); + std::string offFileName(argv[1]); + Gudhi::alphashapes::Delaunay_triangulation_off_reader<T> off_reader(offFileName, dt); + if (!off_reader.is_valid()) { + std::cerr << "Unable to read file " << offFileName << std::endl; + exit(-1); // ----- >> + } + + std::cout << "number_of_finite_full_cells= " << dt.number_of_finite_full_cells() << std::endl; + + std::string outFileName(argv[3]); + std::string offOutputFile(outFileName); + Gudhi::alphashapes::Delaunay_triangulation_off_writer<T> off_writer(offOutputFile, dt); + + return 0; +}
\ No newline at end of file diff --git a/src/Alpha_complex/example/Simplex_tree_from_delaunay_triangulation.cpp b/src/Alpha_complex/example/Simplex_tree_from_delaunay_triangulation.cpp new file mode 100644 index 00000000..0a24fb56 --- /dev/null +++ b/src/Alpha_complex/example/Simplex_tree_from_delaunay_triangulation.cpp @@ -0,0 +1,77 @@ +/* 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 Saclay (France) + * + * 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/>. + */ + +// to construct a Delaunay_triangulation from a OFF file +#include "gudhi/Alpha_shapes/Delaunay_triangulation_off_io.h" +#include "gudhi/Alpha_shapes.h" + +// to construct a simplex_tree from Delaunay_triangulation +#include "gudhi/graph_simplicial_complex.h" +#include "gudhi/Simplex_tree.h" + +#include <CGAL/Delaunay_triangulation.h> +#include <CGAL/Epick_d.h> +#include <CGAL/point_generators_d.h> +#include <CGAL/algorithm.h> +#include <CGAL/assertions.h> + +#include <iostream> +#include <iterator> + +#include <stdio.h> +#include <stdlib.h> +#include <string> + +// Use dynamic_dimension_tag for the user to be able to set dimension +typedef CGAL::Epick_d< CGAL::Dynamic_dimension_tag > K; +typedef CGAL::Delaunay_triangulation<K> T; +// The triangulation uses the default instanciation of the +// TriangulationDataStructure template parameter + +void usage(char * const progName) { + std::cerr << "Usage: " << progName << " filename.off" << std::endl; + exit(-1); // ----- >> +} + +int main(int argc, char **argv) { + if (argc != 2) { + std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl; + usage(argv[0]); + } + + std::string off_file_name(argv[1]); + + // ---------------------------------------------------------------------------- + // + // Init of an alpha-shape from a OFF file + // + // ---------------------------------------------------------------------------- + Gudhi::alphashapes::Alpha_shapes alpha_shapes_from_file(off_file_name); + + std::cout << "alpha_shapes_from_file.dimension()=" << alpha_shapes_from_file.dimension() << std::endl; + std::cout << "alpha_shapes_from_file.filtration()=" << alpha_shapes_from_file.filtration() << std::endl; + std::cout << "alpha_shapes_from_file.num_simplices()=" << alpha_shapes_from_file.num_simplices() << std::endl; + std::cout << "alpha_shapes_from_file.num_vertices()=" << alpha_shapes_from_file.num_vertices() << std::endl; + //std::cout << alpha_shapes_from_file << std::endl; + + return 0; +}
\ No newline at end of file diff --git a/src/Alpha_complex/example/alphashapedoc.off b/src/Alpha_complex/example/alphashapedoc.off new file mode 100755 index 00000000..bb790193 --- /dev/null +++ b/src/Alpha_complex/example/alphashapedoc.off @@ -0,0 +1,10 @@ +nOFF +2 7 0 0 +1.0 1.0 +7.0 0.0 +4.0 6.0 +9.0 6.0 +0.0 14.0 +2.0 19.0 +9.0 17.0 + |