From f7090b7ea2f54eb69f31b0199cf4d2dcf5382668 Mon Sep 17 00:00:00 2001
From: anmoreau <anmoreau@636b058d-ea47-450e-bf9e-a15bfbe3eedb>
Date: Wed, 24 Jun 2015 09:56:01 +0000
Subject: Copy - Move - print_tree - main.cpp (building a simple Simplex_tree
 now works)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/copy_move@639 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 24b8cdf7b1787ceeb415bbb978d69fdb2a1fe407
---
 src/Simplex_tree/include/gudhi/Simplex_tree.h    | 78 +++++++++++++++++++++++-
 src/Simplex_tree/test/simplex_tree_unit_test.cpp | 18 ++++++
 2 files changed, 95 insertions(+), 1 deletion(-)

diff --git a/src/Simplex_tree/include/gudhi/Simplex_tree.h b/src/Simplex_tree/include/gudhi/Simplex_tree.h
index b79e3c8f..7307085e 100644
--- a/src/Simplex_tree/include/gudhi/Simplex_tree.h
+++ b/src/Simplex_tree/include/gudhi/Simplex_tree.h
@@ -26,11 +26,13 @@
 #include <gudhi/Simplex_tree/Simplex_tree_node_explicit_storage.h>
 #include <gudhi/Simplex_tree/Simplex_tree_siblings.h>
 #include <gudhi/Simplex_tree/Simplex_tree_iterators.h>
+#include <gudhi/reader_utils.h>
 #include <gudhi/Simplex_tree/indexing_tag.h>
 
 #include <boost/container/flat_map.hpp>
 #include <boost/iterator/transform_iterator.hpp>
 #include <boost/graph/adjacency_list.hpp>
+#include <gudhi/graph_simplicial_complex.h>
 
 #include <algorithm>
 #include <utility>
@@ -289,6 +291,55 @@ class Simplex_tree {
         dimension_(-1) {
   }
 
+  /** \brief Copy; copy the whole tree structure. */
+  Simplex_tree(Simplex_tree& copy) : root_(NULL, -1)
+	{
+		null_vertex_ = copy.null_vertex_;
+		threshold_ = copy.threshold_;
+		num_simplices_ = copy.num_simplices_;
+		filtration_vect_ = copy.filtration_vect_;
+		dimension_ = copy.dimension_;
+		std::vector<Vertex_handle> v;
+		for (auto sh = copy.root_.members().begin(); sh != copy.root_.members().end(); ++sh)
+		{
+			v.push_back(sh->first);
+			if (has_children(sh)) {
+				rec_copy(sh->second.children(), v);
+			}
+			else {
+				insert_simplex(v, sh->second.filtration());
+			}
+			v.pop_back();
+		}
+	}
+
+  /** rec_copy: DFS, inserts simplices when reaching a leaf.*/
+  void rec_copy(Siblings * sib, std::vector<Vertex_handle> v)
+  {
+	  for (auto sh = sib->members().begin(); sh != sib->members().end(); ++sh)
+	  {
+		  v.push_back(sh->first);
+		  if (has_children(sh)) {
+			  rec_copy(sh->second.children(), v);
+		  }
+		  else {
+			  insert_simplex(v, sh->second.filtration());
+		  }
+		  v.pop_back();
+	  }
+  }
+
+
+  /** \brief Move; moves the whole tree structure. */
+  Simplex_tree(Simplex_tree&& old) : null_vertex_(std::move(old.null_vertex_)), threshold_(std::move(old.threshold_)), filtration_vect_(std::move(old.filtration_vect_))
+	{
+		dimension_ = std::move(old.dimension_);
+		num_simplices_ = std::move(old.num_simplices_);
+		old.dimension_ = -1;
+		old.num_simplices_ = 0;
+		root_ = std::move(old.root_);
+	}
+
   /** \brief Destructor; deallocates the whole tree structure. */
   ~Simplex_tree() {
     for (auto sh = root_.members().begin(); sh != root_.members().end(); ++sh) {
@@ -309,12 +360,37 @@ class Simplex_tree {
     delete sib;
   }
 
+ public: 
+  /** \brief print_tree: prints the tree in a hierarchical manner. */
+  void print_tree()
+  {
+	  for (auto sh = root_.members().begin(); sh != root_.members().end(); ++sh)
+	  {
+		  std::cout << sh->first << " ";
+		  if (has_children(sh))
+			  rec_print(sh->second.children());
+		  std::cout << std::endl;
+	  }
+  }
+
+ private:
+  /** rec_print: prints the tree recursively, using DFS. */
+  void rec_print(Siblings * sib)
+  {
+	  for (auto sh = sib->members().begin(); sh != sib->members().end(); ++sh)
+	  {
+		  std::cout << sh->first << " ";
+		  if (has_children(sh))
+			  rec_print(sh->second.children());
+	  }
+  }
+
  public:
   /** \brief Returns the key associated to a simplex.
    *
    * The filtration must be initialized. */
   Simplex_key key(Simplex_handle sh) {
-    return sh->second.key();
+	  return sh->second.key();
   }
   /** \brief Returns the simplex associated to a key.
    *
diff --git a/src/Simplex_tree/test/simplex_tree_unit_test.cpp b/src/Simplex_tree/test/simplex_tree_unit_test.cpp
index 6b0a1f3d..fdd1a5be 100644
--- a/src/Simplex_tree/test/simplex_tree_unit_test.cpp
+++ b/src/Simplex_tree/test/simplex_tree_unit_test.cpp
@@ -587,4 +587,22 @@ BOOST_AUTO_TEST_CASE( NSimplexAndSubfaces_tree_insertion )
     std::cout << std::endl;
   }
 
+  // TEST Copy constructor / Move 
+  std::cout << "Printing st" << std::endl;
+  std::cout << &st << std::endl;
+  std::cout << st; // Vertices test
+  st.print_tree(); // Hierarchy test
+  typeST st3 = st, st_move = std::move(st);
+  std::cout << "Printing a copy of st" << std::endl;
+  std::cout << &st3 << std::endl;
+  std::cout << st3;
+  st3.print_tree();
+  std::cout << "Printing a move of st" << std::endl;
+  std::cout << &st_move << std::endl;
+  std::cout << st_move;
+  st_move.print_tree();
+  std::cout << "Printing st again" << std::endl;
+  std::cout << &st << std::endl;
+  std::cout << st;
+  st.print_tree();
 }
-- 
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