1 files changed, 87 insertions, 0 deletions
diff --git a/src/boost/libs/graph/example/subgraph.cpp b/src/boost/libs/graph/example/subgraph.cpp
new file mode 100644
index 00000000..289ae54d
--- /dev/null
+++ b/src/boost/libs/graph/example/subgraph.cpp
@@ -0,0 +1,87 @@
+//=======================================================================
+// Copyright 2001 University of Notre Dame.
+// Author: Jeremy G. Siek
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+/*
+  Sample output:
+
+  G0:
+  0 --> 1 
+  1 --> 2 3 
+  2 --> 5 
+  3 --> 
+  4 --> 1 5 
+  5 --> 3 
+  0(0,1) 1(1,2) 2(1,3) 6(2,5) 3(4,1) 4(4,5) 5(5,3) 
+
+  G1:
+  2 --> 5 
+  4 --> 5 
+  5 --> 
+  6(2,5) 4(4,5) 
+
+  G2:
+  0 --> 1 
+  1 --> 
+  0(0,1) 
+
+ */
+
+#include <boost/config.hpp>
+#include <iostream>
+#include <boost/graph/subgraph.hpp>
+#include <boost/graph/adjacency_list.hpp>
+#include <boost/graph/graph_utility.hpp>
+
+int main(int,char*[])
+{
+  using namespace boost;
+  typedef subgraph< adjacency_list<vecS, vecS, directedS,
+    property<vertex_color_t, int>, property<edge_index_t, int> > > Graph;
+
+  const int N = 6;
+  Graph G0(N);
+  enum { A, B, C, D, E, F};     // for conveniently refering to vertices in G0
+
+  Graph& G1 = G0.create_subgraph();
+  Graph& G2 = G0.create_subgraph();
+  enum { A1, B1, C1 };          // for conveniently refering to vertices in G1
+  enum { A2, B2 };              // for conveniently refering to vertices in G2
+
+  add_vertex(C, G1); // global vertex C becomes local A1 for G1
+  add_vertex(E, G1); // global vertex E becomes local B1 for G1
+  add_vertex(F, G1); // global vertex F becomes local C1 for G1
+  
+  add_vertex(A, G2); // global vertex A becomes local A1 for G2
+  add_vertex(B, G2); // global vertex B becomes local B1 for G2
+
+  add_edge(A, B, G0);
+  add_edge(B, C, G0);
+  add_edge(B, D, G0);
+  add_edge(E, B, G0);
+  add_edge(E, F, G0);
+  add_edge(F, D, G0);
+
+  add_edge(A1, C1, G1); // (A1,C1) is subgraph G1 local indices for (C,F).
+
+  std::cout << "G0:" << std::endl;
+  print_graph(G0, get(vertex_index, G0));
+  print_edges2(G0, get(vertex_index, G0), get(edge_index, G0));
+  std::cout << std::endl;
+
+  Graph::children_iterator ci, ci_end;
+  int num = 1;
+  for (boost::tie(ci, ci_end) = G0.children(); ci != ci_end; ++ci) {
+    std::cout << "G" << num++ << ":" << std::endl;
+    print_graph(*ci, get(vertex_index, *ci));
+    print_edges2(*ci, get(vertex_index, *ci), get(edge_index, *ci));
+    std::cout << std::endl;
+  }
+
+  return 0;
+}