Add Subsampling cpp interface and cython

Remove deref cyton import


git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/ST_cythonize@1809 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 2dc0469d2401e0c99e879c064a0f608c8ba78ed6

1 files changed, 59 insertions, 0 deletions

diff --git a/src/cython/include/Subsampling_interface.h b/src/cython/include/Subsampling_interface.h
new file mode 100644
index 00000000..bd37a015
--- /dev/null
+++ b/src/cython/include/Subsampling_interface.h
@@ -0,0 +1,59 @@
+/*    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) 2016 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/>.
+ */
+
+#ifndef SUBSAMPLING_INTERFACE_H
+#define	SUBSAMPLING_INTERFACE_H
+
+#include <gudhi/choose_n_farthest_points.h>
+#include <gudhi/Points_off_io.h>
+#include <CGAL/Epick_d.h>
+
+#include <vector>
+#include <iostream>
+
+namespace Gudhi {
+
+namespace subsampling {
+
+using Subsampling_dynamic_kernel = CGAL::Epick_d< CGAL::Dynamic_dimension_tag >;
+using Subsampling_point_d = Subsampling_dynamic_kernel::Point_d;
+using Subsampling_ft = Subsampling_dynamic_kernel::FT;
+
+std::vector<std::vector<double>> subsampling_n_farthest_points(std::vector<std::vector<double>>& points, unsigned nb_points) {
+  std::vector<Subsampling_point_d> input, output;
+  for (auto point : points)
+      input.push_back(Subsampling_point_d(point.size(), point.begin(), point.end()));
+  std::vector<std::vector<double>> landmarks;
+  Subsampling_dynamic_kernel k;
+  choose_n_farthest_points(k, points, nb_points, std::back_inserter(landmarks));
+  std::cout << "output " << landmarks.size() << std::endl;
+
+
+  return landmarks;
+}
+
+}  // namespace subsampling
+
+}  // namespace Gudhi
+
+#endif  // SUBSAMPLING_INTERFACE_H
+