Added status flag for non-two-manifold configurations (for all entities)

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@312 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/Mesh/Status.hh

@@ -78,7 +78,8 @@ enum StatusBits {
   FEATURE       = 16,   ///< Item is a feature or belongs to a feature.
   TAGGED        = 32,   ///< Item is tagged.
   TAGGED2       = 64,   ///< Alternate bit for tagging an item.
-  UNUSED   = 128  ///<
+  NONMANIFOLD   = 128,  ///< Item is isolated and thus non-manifold
+  UNUSED        = 256   ///< Unused
 };
 
 
@@ -138,6 +139,12 @@ public:
   void set_tagged2(bool _b) { change_bit(TAGGED2, _b); }
   
   
+  /// is non-manifold ?
+  bool nonmanifold() const  { return is_bit_set(NONMANIFOLD); }
+  /// set non-manifold
+  void set_nonmanifold(bool _b) { change_bit(NONMANIFOLD, _b); }
+
+
   /// return whole status
   unsigned int bits() const { return status_; }
   /// set whole status at once