Add example just for Mac test. To be removed.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/tangential_test@1861 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: be598143de42dba782462985515cbc77b0a51e8b

2 files changed, 81 insertions, 0 deletions

diff --git a/src/Tangential_complex/example/CMakeLists.txt b/src/Tangential_complex/example/CMakeLists.txt
index 32f6eebb..291432b0 100644
--- a/src/Tangential_complex/example/CMakeLists.txt
+++ b/src/Tangential_complex/example/CMakeLists.txt
@@ -8,9 +8,12 @@ if(CGAL_FOUND)
       target_link_libraries(Tangential_complex_example_basic ${CGAL_LIBRARY} ${Boost_DATE_TIME_LIBRARY})
       add_executable( Tangential_complex_example_with_perturb example_with_perturb.cpp )
       target_link_libraries(Tangential_complex_example_with_perturb ${CGAL_LIBRARY} ${Boost_DATE_TIME_LIBRARY})
+      add_executable( example example.cpp )
+      target_link_libraries(example ${CGAL_LIBRARY} ${Boost_DATE_TIME_LIBRARY})
       if (TBB_FOUND)
         target_link_libraries(Tangential_complex_example_basic ${TBB_LIBRARIES})
         target_link_libraries(Tangential_complex_example_with_perturb ${TBB_LIBRARIES})
+        target_link_libraries(example ${TBB_LIBRARIES})
       endif(TBB_FOUND)
 
       add_test(Tangential_complex_example_basic
diff --git a/src/Tangential_complex/example/example.cpp b/src/Tangential_complex/example/example.cpp
new file mode 100644
index 00000000..cd0f121f
--- /dev/null
+++ b/src/Tangential_complex/example/example.cpp
@@ -0,0 +1,78 @@
+#include <gudhi/Tangential_complex.h>
+#include <gudhi/sparsify_point_set.h>
+
+#include <CGAL/Epick_d.h>
+#include <CGAL/Random.h>
+
+#include <array>
+#include <vector>
+
+namespace tc = Gudhi::tangential_complex;
+
+
+int main(void) {
+  typedef CGAL::Epick_d<CGAL::Dynamic_dimension_tag> Kernel;
+  typedef Kernel::FT FT;
+  typedef Kernel::Point_d Point;
+  typedef Kernel::Vector_d Vector;
+  typedef tc::Tangential_complex<Kernel, CGAL::Dynamic_dimension_tag, CGAL::Parallel_tag> TC;
+
+
+  const int INTRINSIC_DIM = 1;
+
+  // Generate points on a 2-sphere
+  std::vector<Point> points;
+  // [[0, 0], [1, 0], [0, 1], [1, 1]]
+  std::vector<double> point = {0.0, 0.0};
+  points.push_back(Point(point.size(), point.begin(), point.end()));
+  point = {1.0, 0.0};
+  points.push_back(Point(point.size(), point.begin(), point.end()));
+  point = {0.0, 1.0};
+  points.push_back(Point(point.size(), point.begin(), point.end()));
+  point = {1.0, 1.0};
+  points.push_back(Point(point.size(), point.begin(), point.end()));
+  std::cout << "points = " << points.size() << std::endl;
+  Kernel k;
+
+  // Compute the TC
+  TC tc(points, INTRINSIC_DIM, k);
+  tc.compute_tangential_complex();
+  TC::Num_inconsistencies num_inc = tc.number_of_inconsistent_simplices();
+  std::cout << "TC vertices = " << tc.number_of_vertices() << " - simplices = " << num_inc.num_simplices <<
+               " - inconsistencies = " << num_inc.num_inconsistent_simplices << std::endl;
+
+  // Export the TC into a Simplex_tree
+  Gudhi::Simplex_tree<> stree;
+  tc.create_complex(stree);
+
+  std::cout << "********************************************************************\n";
+  std::cout << "* The complex contains " << stree.num_simplices() << " simplices";
+  std::cout << "   - dimension " << stree.dimension() << "   - filtration " << stree.filtration() << "\n";
+  std::cout << "* Iterator on Simplices in the filtration, with [filtration value]:\n";
+  for (auto f_simplex : stree.filtration_simplex_range()) {
+    std::cout << "   " << "[" << stree.filtration(f_simplex) << "] ";
+    for (auto vertex : stree.simplex_vertex_range(f_simplex)) {
+      std::cout << static_cast<int>(vertex) << " ";
+    }
+    std::cout << std::endl;
+  }
+
+  tc.fix_inconsistencies_using_perturbation(0.01, 30.0);
+
+  // Export the TC into a Simplex_tree
+  tc.create_complex(stree);
+
+  std::cout << "********************************************************************\n";
+  std::cout << "* The complex contains " << stree.num_simplices() << " simplices\n";
+  std::cout << "   - dimension " << stree.dimension() << "   - filtration " << stree.filtration() << "\n";
+  std::cout << "* Iterator on Simplices in the filtration, with [filtration value]:\n";
+  for (auto f_simplex : stree.filtration_simplex_range()) {
+    std::cout << "   " << "[" << stree.filtration(f_simplex) << "] ";
+    for (auto vertex : stree.simplex_vertex_range(f_simplex)) {
+      std::cout << static_cast<int>(vertex) << " ";
+    }
+    std::cout << std::endl;
+  }
+
+  return 0;
+}