ns3_circle_placement.cc

#include <cmath>

#include <ns3/core-module.h>
#include <ns3/mobility-module.h>
#include <ns3/netanim-module.h>

using namespace ns3;

Vector polarToRectangular(double radius, double theta, double offsetx, double offsety)
{
    double y = radius*sin(theta);
    double x = radius*cos(theta);
    return Vector(offsetx+x, offsety+y, 0);
}

int main()
{
    double placementRadius = 100.0; //meters
    unsigned numNodes = 10;
    NodeContainer nodes;
    nodes.Create(numNodes);

    Ptr <ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();

    double angleBetweenNodes = 2*M_PI/numNodes;
    for (unsigned i = 0; i < numNodes; i++) {
        positionAlloc->Add(polarToRectangular(placementRadius, angleBetweenNodes*i, placementRadius, placementRadius));
    }

    MobilityHelper mobility;
    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
    mobility.SetPositionAllocator(positionAlloc);
    mobility.Install(nodes);

    AnimationInterface anim("anim.xml");

    Simulator::Stop(Seconds(1.0));
    Simulator::Run();
    Simulator::Destroy();
}