randomwalk2dmobility model

[Binus, Newuleko Bayo (The grey)]

hi, please i have a problem. i am using the randomwalk2dmobility model. but my simulation area is circular. My concern is that the boundary is set in rectangle while the simulation area is in a circle. how do i deal with this situation?

here is my code snippet: 

MobilityHelper mobilityMobile;

    mobilityMobile.SetPositionAllocator("ns3::UniformDiscPositionAllocator",

                                        "rho",

                                        DoubleValue(radiusMeters),

                                        "X",

                                        DoubleValue(0.0),

                                        "Y",

                                        DoubleValue(0.0));

    mobilityMobile.SetMobilityModel(

        "ns3::RandomWalk2dMobilityModel",

        "Speed",

        StringValue("ns3::UniformRandomVariable[Min=2.0|Max=5.0]"),

        "Bounds",

        RectangleValue(Rectangle(-radiusMeters, radiusMeters, -radiusMeters, radiusMeters)));

[Tommaso Pecorella]

I'm afraid you'll need to develop a new RandomWalk model.

The good news is that it's not that complicated, just look at the existing ones.