Fixed retrieve_disjoint_paths to deal with non-node-disjoint situations.

[mtp.git] / mtp_graph.h

diff --git a/mtp_graph.h b/mtp_graph.h
index 33a29f5..64308b9 100644 (file)
--- a/mtp_graph.h
+++ b/mtp_graph.h
@@ -61,7 +61,7 @@ class MTPGraph {
   // Follows the path starting on edge e and returns the number of
   // nodes to reach the sink. If path is non-null, stores in it the
   // nodes met along the path, and computes path->length properly.
-  int retrieve_one_path(Edge *e, Path *path);
+  int retrieve_one_path(Edge *e, Path *path, int *used_edges);
 
   int _nb_vertices, _nb_edges;
   Vertex *_source, *_sink;
@@ -94,7 +94,10 @@ public:
   void find_best_paths(scalar_t *lengths);
 
   // Retrieve the paths corresponding to the occupied edges, and save
-  // the result in the nb_paths and paths fields.
+  // the result in the nb_paths and paths fields. If the paths are not
+  // node-disjoint, there are multiple families of paths that
+  // "explain" the edge occupancies, and this method picks one of them
+  // arbitrarily.
   void retrieve_disjoint_paths();
 
   void print(ostream *os);