From 6adf87fe0a609443962238200e877c60d90f6a2d Mon Sep 17 00:00:00 2001
From: mcarrier <mcarrier@636b058d-ea47-450e-bf9e-a15bfbe3eedb>
Date: Fri, 12 May 2017 15:37:55 +0000
Subject: git-svn-id:
 svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/Nerve_GIC@2413
 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: a0a65ae49ca0bb6e5ed614f44cabb060fa0e7490
---
 src/Nerve_GIC/example/GICvoronoi.cpp | 59 ++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 src/Nerve_GIC/example/GICvoronoi.cpp

(limited to 'src/Nerve_GIC/example/GICvoronoi.cpp')

diff --git a/src/Nerve_GIC/example/GICvoronoi.cpp b/src/Nerve_GIC/example/GICvoronoi.cpp
new file mode 100644
index 00000000..2d50ab4d
--- /dev/null
+++ b/src/Nerve_GIC/example/GICvoronoi.cpp
@@ -0,0 +1,59 @@
+#include <gudhi/GIC.h>
+
+void usage(int nbArgs, char * const progName) {
+  std::cerr << "Error: Number of arguments (" << nbArgs << ") is not correct\n";
+  std::cerr << "Usage: " << progName << " filename.off threshold N\n";
+  std::cerr << "       i.e.: " << progName << " ../../../data/points/human.off 0.075 100 \n";
+  exit(-1);  // ----- >>
+}
+
+int main(int argc, char **argv) {
+  if ((argc != 4) && (argc != 5)) usage(argc, (argv[0] - 1));
+
+  std::string off_file_name(argv[1]);
+  double threshold = atof(argv[2]);
+  int m = atoi(argv[3]);
+  bool verb = 0; if(argc == 5)  verb = 1;
+
+  // ----------------------------------------------------------------------------
+  // Init of a graph induced complex from an OFF file
+  // ----------------------------------------------------------------------------
+
+  Gudhi::graph_induced_complex::Graph_induced_complex GIC;
+  GIC.set_verbose(verb);
+
+  GIC.set_color_from_coordinate(off_file_name);
+
+  GIC.set_graph_from_OFF(off_file_name);
+
+  GIC.set_cover_from_Voronoi(m, off_file_name);
+
+  GIC.find_GIC_simplices();
+
+  GIC.plot_with_KeplerMapper();
+
+  Simplex_tree stree; GIC.create_complex(stree);
+
+  std::streambuf* streambufffer = std::cout.rdbuf();
+  std::ostream output_stream(streambufffer);
+
+  // ----------------------------------------------------------------------------
+  // Display information about the graph induced complex
+  // ----------------------------------------------------------------------------
+
+  if(verb){
+    output_stream << "Graph induced complex is of dimension " << stree.dimension() <<
+                   " - " << stree.num_simplices() << " simplices - " <<
+                   stree.num_vertices() << " vertices." << std::endl;
+
+    output_stream << "Iterator on graph induced complex simplices" << std::endl;
+    for (auto f_simplex : stree.filtration_simplex_range()) {
+      for (auto vertex : stree.simplex_vertex_range(f_simplex)) {
+        output_stream << vertex << " ";
+      }
+      output_stream << std::endl;
+    }
+  }
+
+  return 0;
+}
-- 
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