1 files changed, 71 insertions, 0 deletions
diff --git a/example/Skeleton_blocker/Skeleton_blocker_link.cpp b/example/Skeleton_blocker/Skeleton_blocker_link.cpp
new file mode 100644
index 00000000..1f937170
--- /dev/null
+++ b/example/Skeleton_blocker/Skeleton_blocker_link.cpp
@@ -0,0 +1,71 @@
+/*    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 Sophia Antipolis-Mediterranee (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/>.
+ */
+
+#include <gudhi/Skeleton_blocker.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string>
+#include <fstream>
+#include <sstream>
+
+using namespace std;
+using namespace Gudhi;
+using namespace skeleton_blocker;
+
+typedef Skeleton_blocker_complex<Skeleton_blocker_simple_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);
+
+  cout << "complex:" << complex.to_string() << endl;
+
+  // build the link of vertex 1, eg a triangle {0,2,3}
+  auto link = complex.link(Vertex_handle(1));
+  cout << "link:" << link.to_string() << 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)
+    cout << "link.contains_vertex(Vertex_handle(" << i << ")):" << link.contains_vertex(Vertex_handle(i)) << endl;
+  cout << 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)
+    cout << "link.contains_vertex(Root_vertex_handle(" << i << ")):" <<
+        link.contains_vertex(Root_vertex_handle(i)) << endl;
+
+  return EXIT_SUCCESS;
+}