Add helper for uniform gw distribution

helper/ground-node-helper.cc

@@ -5,6 +5,8 @@
 #include "ns3/log.h"
 #include "ns3/config.h"
 #include "ns3/waypoint.h"
+#include "ns3/double.h"
+#include "ns3/mobility-helper.h"
 
 #include "ground-node-helper.h"
 
@@ -55,6 +57,24 @@ LeoGndNodeHelper::Install (const std::string &file)
   return nodes;
 }
 
+NodeContainer
+LeoGndNodeHelper::Install (uint64_t numNodes)
+{
+  NodeContainer nodes;
+  for (uint64_t i = 0; i < numNodes; i++)
+    {
+      nodes.Add (m_gndNodeFactory.Create<Node> ());
+    }
+  MobilityHelper mobility;
+  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
+  mobility.SetPositionAllocator ("ns3::LeoPolarPositionAllocator",
+  				 "Step", DoubleValue (360.0 * 180.0 / numNodes));
+
+  mobility.Install (nodes);
+
+  return nodes;
+}
+
 Vector3D
 LeoGndNodeHelper::GetEarthPosition (const LeoLatLong &loc)
 {

helper/ground-node-helper.h

@@ -29,11 +29,18 @@ public:
 
   /**
    *
-   * \param wpFile path to latitude longitude file
+   * \param file path to latitude longitude file
    * \returns a node container containing nodes using the specified attributes
    */
   NodeContainer Install (const std::string &file);
 
+  /**
+   *
+   * \param numNodes a number of nodes to uniformly distribute accross earth
+   * \returns a node container containing nodes using the specified attributes
+   */
+  NodeContainer Install (uint64_t numNodes);
+
   /**
    *
    * \param location1 first location