14     algebra::Vector anker;

    14     algebra::Vector anker;

    15     Surface *surface;

    15     Surface *surface;

    16 

    16 

    17   public:

    17   public:

    18     virtual ~ Drawable () { };

    18     virtual ~ Drawable () { };

    19     virtual void move (algebra::Vector) = 0;

    20     virtual void move (algebra::Vector) = 0;

    20     virtual void show () = 0;

    21     virtual void show () = 0;

    21 };

    22 };

    22 #endif

    23 #endif