diff options
Diffstat (limited to 'trunk/src/Skeleton_blocker/example/Skeleton_blocker_link.cpp')
-rw-r--r-- | trunk/src/Skeleton_blocker/example/Skeleton_blocker_link.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/trunk/src/Skeleton_blocker/example/Skeleton_blocker_link.cpp b/trunk/src/Skeleton_blocker/example/Skeleton_blocker_link.cpp new file mode 100644 index 00000000..58322038 --- /dev/null +++ b/trunk/src/Skeleton_blocker/example/Skeleton_blocker_link.cpp @@ -0,0 +1,69 @@ +/* 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): David Salinas + * + * 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 <gudhi/Skeleton_blocker.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string> +#include <fstream> +#include <sstream> + +typedef Gudhi::skeleton_blocker::Skeleton_blocker_simple_traits Traits; +typedef Gudhi::skeleton_blocker::Skeleton_blocker_complex<Traits> Complex; +typedef Complex::Vertex_handle Vertex_handle; +typedef Complex::Root_vertex_handle Root_vertex_handle; +typedef Complex::Simplex Simplex; + +int main(int argc, char *argv[]) { + // build a full complex with 4 vertices and 2^4-1 simplices + + // Create a complex with four vertices (0,1,2,3) + Complex complex; + + // Add a tetrahedron to this complex + Simplex tetrahedron(Vertex_handle(0), Vertex_handle(1), Vertex_handle(2), Vertex_handle(3)); + complex.add_simplex(tetrahedron); + + std::cout << "complex:" << complex.to_string() << std::endl; + + // build the link of vertex 1, eg a triangle {0,2,3} + auto link = complex.link(Vertex_handle(1)); + std::cout << "link:" << link.to_string() << std::endl; + + // Internally link is a subcomplex of 'complex' and its vertices are stored in a vector. + // They can be accessed via Vertex_handle(x) where x is an index of the vector. + // In that example, link has three vertices and thus it contains only + // Vertex_handle(0),Vertex_handle(1) and Vertex_handle(2) are). + for (int i = 0; i < 5; ++i) + std::cout << "link.contains_vertex(Vertex_handle(" << i << ")):" << link.contains_vertex(Vertex_handle(i)) << + std::endl; + std::cout << std::endl; + + // To access to the initial vertices eg (0,1,2,3,4), Root_vertex_handle must be used. + // For instance, to test if the link contains the vertex that was labeled i: + for (int i = 0; i < 5; ++i) + std::cout << "link.contains_vertex(Root_vertex_handle(" << i << ")):" << + link.contains_vertex(Root_vertex_handle(i)) << std::endl; + + return EXIT_SUCCESS; +} |