private void bg_worker1_DoWork(object sender, DoWorkEventArgs e)
{
//Int32 port = 13000;
Int32 port = 1223;
//IPAddress localAddr = IPAddress.Parse("130.126.122.122");
//IPAddress localAddr = IPAddress.Any;
TcpListener server = null;
//server = new TcpListener(localAddr, port);
server = new TcpListener(port);
// Start listening for client requests.
server.Start();
// Buffer for reading data
int num_floats = 512; // number of floating point numbers in each packet
int packet_length = num_floats * sizeof(float); // (in bytes)
Byte[] bytes = new Byte[packet_length];
TcpClient client = null;
NetworkStream stream = null;
write_to_msg_box("Waiting for connection: \n");
Subj S = new Subj();
while (true)
{
if (bg_worker1.CancellationPending == true)
{
server.Stop();
Thread.Sleep(500);
break;
}
else
{
try
{
//write_to_msg_box("In BG_Do_WORK\n");
client = server.AcceptTcpClient();
write_to_msg_box("Client Connected!!\n");
stream = client.GetStream();
S = new Subj(client, 0, all_subj.Count);
int i;
while ((i = stream.Read(bytes, 0, packet_length)) != 0)
{
// Convert byte array to float
float[] float_array = new float[num_floats];
for (int ii = 0; ii < float_array.Length; ii++)
{
float_array[ii] = BitConverter.ToSingle(bytes, ii * sizeof(float));
if (ii < 11)
Console.Write(float_array[ii] + " ");
}
Console.Write("\n\n");
// Process float array and get estimated gaze point
Point_Obj est_gaze_pt = process_float_data(float_array);
// Log estimated gaze point
S.get_gaze_pts().Add(est_gaze_pt);
// Check if subject is distracted
S = check_if_distract(S, est_gaze_pt);
Console.WriteLine("NUM DISTRACT FRAMES: {0}", S.get_num_frames_distracted());
if (S.get_num_frames_distracted() > DISTRACT_WINDOW)
{
write_to_alert_box(1);
}
else
{
write_to_alert_box(0);
}
}
all_subj.Add(S);
stream.Close();
client.Close();
write_to_msg_box("Connection Closed");
}
catch (Exception EE)
{
Console.WriteLine("EXCEPTION: {0}", EE.Message);
all_subj.Add(S);
stream.Close();
client.Close();
write_to_msg_box("Connection Closed");
}
// Write Subj. to a file
File_IO F = new File_IO();
F.write_subj_to_file(S);
}
}
}
private Subj check_if_distract(Subj S, Point_Obj est_gaze_pt)
{
//Console.WriteLine("INPUT PT: {0}", est_gaze_pt.ToString());
est_gaze_pt.set_coord(-est_gaze_pt.get_x(), est_gaze_pt.get_y() + MONITOR_DIM_Y / 2, est_gaze_pt.get_z());
int cur_num_frames_distracted = S.get_num_frames_distracted();
if (est_gaze_pt.get_x() < -MONITOR_DIM_X / 2 || est_gaze_pt.get_x() > MONITOR_DIM_X / 2)
{
//Console.WriteLine("INCREMENT!");
S.set_num_frames_distracted(++cur_num_frames_distracted);
}
else if (est_gaze_pt.get_y() < -MONITOR_DIM_Y / 2 || est_gaze_pt.get_y() > MONITOR_DIM_Y / 2)
{
//Console.WriteLine("INCREMENT!!");
S.set_num_frames_distracted(++cur_num_frames_distracted);
}
else
{
//Console.WriteLine("RESET");
S.set_num_frames_distracted(0);
}
//Console.WriteLine("NUM DISTRACT FRAMES PRIOR: {0}", S.get_num_frames_distracted());
return S;
}