class BRepAlgo_Image;
class BRepAlgo_AsDes;
class BRepAlgo_FaceRestrictor;
-class BRepAlgo_BooleanOperations;
-class BRepAlgo_DSAccess;
-class BRepAlgo_EdgeConnector;
class BRepAlgo_NormalProjection;
friend class BRepAlgo_Image;
friend class BRepAlgo_AsDes;
friend class BRepAlgo_FaceRestrictor;
-friend class BRepAlgo_BooleanOperations;
-friend class BRepAlgo_DSAccess;
-friend class BRepAlgo_EdgeConnector;
friend class BRepAlgo_NormalProjection;
};