78   /**

    78   /**

    79    * Sets the child mobility model to a new one.  If before there

    79    * Sets the child mobility model to a new one.  If before there

    80    * already existed a child model, then the child mobility model

    80    * already existed a child model, then the child mobility model

    81    * current position is also modified to ensure that the composite

    81    * current position is also modified to ensure that the composite

    82    * position is preserved.

    82    * position is preserved.

    83    */

    84    */

    84   void SetChild (Ptr<MobilityModel> model);

    85   void SetChild (Ptr<MobilityModel> model);

    85   /**

    86   /**

    86    * Sets the parent mobility model to a new one.  If before there

    87    * Sets the parent mobility model to a new one.  If before there

    87    * already existed a child model, then the child mobility model

    88    * already existed a child model, then the child mobility model

    88    * current position is also modified to ensure that the composite

    89    * current position is also modified to ensure that the composite

    89    * position is preserved.

    90    * position is preserved.

    90    */

    92    */

    91   void SetParent (Ptr<MobilityModel> model);

    93   void SetParent (Ptr<MobilityModel> model);

    92   

    94   

    93 private:

    95 private:

    94   virtual Vector DoGetPosition (void) const;

    96   virtual Vector DoGetPosition (void) const;