Public Function VisibilityTest( _
   ByVal ReferenceFrame As  IAgCrdnSystem, _
   ByVal Sphere As IAgStkGraphicsBoundingSphere _
) As AgEStkGraphicsVisibility

public AgEStkGraphicsVisibility VisibilityTest(

    IAgCrdnSystem ReferenceFrame, 

   IAgStkGraphicsBoundingSphere Sphere

);

public: AgEStkGraphicsVisibility VisibilityTest(

    IAgCrdnSystem ^ ReferenceFrame, 

   IAgStkGraphicsBoundingSphere ^ Sphere

);

public AgEStkGraphicsVisibility visibilityTest(

    IAgCrdnSystem ReferenceFrame, 

   IAgStkGraphicsBoundingSphere Sphere

);

public: HRESULT VisibilityTest(

    IAgCrdnSystem * ReferenceFrame, 

   IAgStkGraphicsBoundingSphere * Sphere, 

   AgEStkGraphicsVisibility * ReturnValue

);