/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

#include "ns3/ptr.h"

#include "ns3/node.h"

#include "ns3/command-line.h"

#include "ns3/mobility-model.h"

#include "ns3/mobility-helper.h"

#include "ns3/uinteger.h"

#include "ns3/double.h"

#include "ns3/string.h"

using namespace ns3;

int main (int argc, char *argv[])

{

  CommandLine cmd;

  cmd.Parse (argc, argv);

  std::vector<Ptr<Object> > nodes;

  // create an array of empty nodes for testing purposes 

  for (uint32_t i = 0; i < 120; i++)

    {

      nodes.push_back (CreateObject<Node> ());

    }

  MobilityHelper mobility;

  // setup the grid itself: objects are layed out

  // started from (-100,-100) with 20 objects per row, 

  // the x interval between each object is 5 meters

  // and the y interval between each object is 20 meters

  mobility.SetPositionAllocator ("ns3::GridPositionAllocator",

                                 "MinX", Double (-100.0),

                                 "MinY", Double (-100.0),

                                 "DeltaX", Double (5.0),

                                 "DeltaY", Double (20.0),

                                 "GridWidth", Uinteger (20),

                                 "LayoutType", String ("RowFirst"));

  // each object will be attached a static position.

  // i.e., once set by the "position allocator", the

  // position will never change.

  mobility.SetMobilityModel ("ns3::StaticMobilityModel");

  // finalize the setup by attaching to each object

  // in the input array a position and initializing

  // this position with the calculated coordinates.

  mobility.Layout (nodes.begin (), nodes.end ());

  // iterate our nodes and print their position.

  for (std::vector<Ptr<Object> >::const_iterator j = nodes.begin ();

       j != nodes.end (); j++)

    {

      Ptr<Object> object = *j;

      Ptr<MobilityModel> position = object->GetObject<MobilityModel> ();

      NS_ASSERT (position != 0);

      Vector pos = position->GetPosition ();

      std::cout << "x=" << pos.x << ", y=" << pos.y << ", z=" << pos.z << std::endl;

    }

  return 0;

}