#ifndef TRACKMODE_H #define TRACKMODE_H namespace vcg { class TrackMode { public: }; class SphereMode: public TrackMode { public: }; class GravityMode: public TrackMode { public: }; class CylinderMode: public TrackMode { public: }; class PlaneMode: public TrackMode { public: }; class LineMode: public TrackMode { public: }; class ScaleMode: public TrackMode { public: }; }//namespace #endif