FreeTrack

using System;
using System.IO.MemoryMappedFiles;
using System.Runtime.InteropServices;
using System.Threading;

namespace FakeFreeTrack
{
   [StructLayout(LayoutKind.Sequential)]
   public struct TFreeTrackData
   {
       public int DataID;
       public int CamWidth;
       public int CamHeight;
       // virtual pose
       public float Yaw;   // positive yaw to the left
       public float Pitch; // positive pitch up
       public float Roll;  // positive roll to the left
       public float X;
       public float Y;
       public float Z;
       // raw pose with no smoothing, sensitivity, response curve etc.
       public float RawYaw;
       public float RawPitch;
       public float RawRoll;
       public float RawX;
       public float RawY;
       public float RawZ;
       // raw points, sorted by Y, origin top left corner
       public float X1;
       public float Y1;
       public float X2;
       public float Y2;
       public float X3;
       public float Y3;
       public float X4;
       public float Y4;
   };

   class Program
   {
       static void Main(string[] args)
       {
           var random = new Random();
           var count = 0;
               using (var memoryMappedFile = MemoryMappedFile.CreateOrOpen("FT_SharedMem", Marshal.SizeOf(typeof(TFreeTrackData))))
               {
                   using (var accessor = memoryMappedFile.CreateViewAccessor())
                   {
                       while (true)
                       {
                           count++;
                           TFreeTrackData model =  new TFreeTrackData();
                           model.DataID = count;
                           model.CamWidth = 320;
                           model.CamHeight = 240;
                           model.Yaw = random.Next(0, 120) / (float)(180.0 / Math.PI);

                           accessor.Write(0, ref model);
                           Thread.Sleep(5);
                       }
                   }
               }
       }
   }
}