From bb56631552ff8cf431d2286470223f7394cb2846 Mon Sep 17 00:00:00 2001
From: cjamin <cjamin@636b058d-ea47-450e-bf9e-a15bfbe3eedb>
Date: Tue, 31 May 2016 16:09:46 +0000
Subject: Farthest points (from Siargey)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/subsampling_and_spatialsearching@1230 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 3093bfd41948fecf5f6ccb2d1d77546c12e628f4
---
 src/Subsampling/test/CMakeLists.txt  | 22 +++++++++++++++++
 src/Subsampling/test/landmarking.cpp | 47 ++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 src/Subsampling/test/CMakeLists.txt
 create mode 100644 src/Subsampling/test/landmarking.cpp

(limited to 'src/Subsampling/test')

diff --git a/src/Subsampling/test/CMakeLists.txt b/src/Subsampling/test/CMakeLists.txt
new file mode 100644
index 00000000..3a45c685
--- /dev/null
+++ b/src/Subsampling/test/CMakeLists.txt
@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 2.6)
+project(GUDHILandmarkingTest)
+
+# Landmarking test
+if(CGAL_FOUND)
+  if (NOT CGAL_VERSION VERSION_LESS 4.8.0)
+    message(STATUS "CGAL version: ${CGAL_VERSION}.")
+
+    find_package(Eigen3 3.1.0)
+    if (EIGEN3_FOUND)
+      message(STATUS "Eigen3 version: ${EIGEN3_VERSION}.")
+      include( ${EIGEN3_USE_FILE} )
+      include_directories (BEFORE "../../include")
+
+      add_executable( landmarking_UT landmarking.cpp ) 
+    else()
+      message(WARNING "Eigen3 not found. Version 3.1.0 is required for Landmarking feature.")
+    endif()
+  else()
+    message(WARNING "CGAL version: ${CGAL_VERSION} is too old to compile Landmarking feature. Version 4.8.0 is required.")
+  endif ()
+endif()
diff --git a/src/Subsampling/test/landmarking.cpp b/src/Subsampling/test/landmarking.cpp
new file mode 100644
index 00000000..3131c798
--- /dev/null
+++ b/src/Subsampling/test/landmarking.cpp
@@ -0,0 +1,47 @@
+// #ifdef _DEBUG
+// # define TBB_USE_THREADING_TOOL
+// #endif
+
+#include <gudhi/Landmark_choice_by_random_point.h>
+#include <gudhi/Landmark_choice_by_farthest_point.h>
+#include <vector>
+#include <iterator>
+
+#include <CGAL/Epick_d.h>
+
+
+int main() {
+  typedef CGAL::Epick_d<CGAL::Dynamic_dimension_tag>                K;
+  typedef typename K::FT                                            FT;
+  typedef typename K::Point_d                                       Point_d;
+  
+  std::vector<Point_d> vect;
+  vect.push_back(Point_d(std::vector<FT>({0,0,0,0})));
+  vect.push_back(Point_d(std::vector<FT>({0,0,0,1})));
+  vect.push_back(Point_d(std::vector<FT>({0,0,1,0})));
+  vect.push_back(Point_d(std::vector<FT>({0,0,1,1})));
+  vect.push_back(Point_d(std::vector<FT>({0,1,0,0})));
+  vect.push_back(Point_d(std::vector<FT>({0,1,0,1})));
+  vect.push_back(Point_d(std::vector<FT>({0,1,1,0})));
+  vect.push_back(Point_d(std::vector<FT>({0,1,1,1})));
+  vect.push_back(Point_d(std::vector<FT>({1,0,0,0})));
+  vect.push_back(Point_d(std::vector<FT>({1,0,0,1})));
+  vect.push_back(Point_d(std::vector<FT>({1,0,1,0})));
+  vect.push_back(Point_d(std::vector<FT>({1,0,1,1})));
+  vect.push_back(Point_d(std::vector<FT>({1,1,0,0})));
+  vect.push_back(Point_d(std::vector<FT>({1,1,0,1})));
+  vect.push_back(Point_d(std::vector<FT>({1,1,1,0})));
+  vect.push_back(Point_d(std::vector<FT>({1,1,1,1})));
+  
+  
+  std::vector<Point_d> landmarks;
+  Gudhi::landmark_choice_by_random_point(vect, 5, std::back_inserter(landmarks));
+  std::cout << "landmark vector contains: ";
+  for (auto l: landmarks)
+    std::cout << l << "\n";
+
+  landmarks.clear();
+  K k;
+  Gudhi::landmark_choice_by_farthest_point(k, vect, 16, std::back_inserter(landmarks));
+  
+}
-- 
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