146     int windingB;

   146     int windingB;

   147 

   147 

   148     int first;

   148     int first;

   149     int second;

   149     int second;

   150 

   150 

   153 

   153 

   154     int next(Traversal traversal, Direction direction) const;

   154     int next(Traversal traversal, Direction direction) const;

   155 

   155 

   156     void setNext(Traversal traversal, Direction direction, int next);

   156     void setNext(Traversal traversal, Direction direction, int next);

   157     void setNext(Direction direction, int next);

   157     void setNext(Direction direction, int next);