LogViewer.MainWindow.ShowMap C# (CSharp) Method

        void ShowMap()
        {
            myMap.Children.Clear();

            List<Flight> selected = GetSelectedFlights();
            if (selected.Count == 0)
            {
                // show everything.
                selected.Add(new Flight() { StartTime = DateTime.MinValue, Duration = TimeSpan.MaxValue });
            }
            var glitchIcon = XamlExtensions.LoadImageResource("Assets.GpsGlitchIcon.png");
            var imageLayer = new MapLayer();
            myMap.Children.Add(imageLayer);
            MapPolyline last = currentFlight;
            foreach (IDataLog log in this.logs)
            {
                if (log != null)
                {
                    bool gpsIsBad = false;
                    foreach (var flight in selected)
                    {
                        if (flight.Log == null || flight.Log == log)
                        {
                            MapPolyline line = new MapPolyline();
                            line.StrokeThickness = 4;
                            line.Stroke = new SolidColorBrush(HlsColor.GetRandomColor());
                            LocationCollection points = new LocationCollection();

                            Debug.WriteLine("time,\t\tlat,\t\tlong,\t\t\tnsat,\talt,\thdop,\tfix");
                            foreach (var row in log.GetRows("GPS", flight.StartTime, flight.Duration))
                            {
                                LogEntryGPS gps = new LogEntryGPS(row);
                                //Debug.WriteLine("{0},\t{1},\t{2},\t{3},\t\t{4:F2},\t{5},\t{6}", gps.TimeMS,  gps.Lat, gps.Lng, gps.NSats, gps.Alt, gps.HDop, gps.Fix);
                                if (!(gps.Lat == 0 && gps.Lon == 0))
                                {
                                    var pos = new Location() { Altitude = gps.Alt, Latitude = gps.Lat, Longitude = gps.Lon };
                                    points.Add(pos);
                                    ulong time = (ulong)gps.GPSTime;
                                    if (time != 0)
                                    {
                                        if ((gps.nSat < 5 || gps.EPH > 20))
                                        {
                                            if (!gpsIsBad)
                                            {
                                                gpsIsBad = true;
                                                Debug.WriteLine("{0},\t{1},\t{2},\t{3},\t\t{4:F2},\t{5},\t{6}", gps.GPSTime, gps.Lat, gps.Lon, gps.nSat, gps.Alt, gps.EPH, gps.Fix);
                                                Image img = new Image();
                                                img.Width = 30;
                                                img.Height = 30;
                                                img.Source = glitchIcon;
                                                img.Stretch = Stretch.None;
                                                img.ToolTip = "GPS Glitch!";
                                                imageLayer.AddChild(img, pos, PositionOrigin.Center);
                                            }
                                        }
                                        else
                                        {
                                            gpsIsBad = false;
                                        }
                                    }
                                }
                            }
                            if (points.Count > 0)
                            {
                                line.Locations = points;
                                myMap.Children.Add(line);
                                last = line;
                            }
                        }
                    }
                }
            }

            ModelViewer.Visibility = Visibility.Collapsed;
            Messages.Visibility = Visibility.Collapsed;
            ChartStack.Visibility = Visibility.Collapsed;
            TextButton.IsChecked = false;
            myMap.Visibility = Visibility.Visible;
            myMap.UpdateLayout();

            if (last != null)
            {
                try
                {
                    myMap.SetView(last.Locations, new Thickness(20.0), 0);
                }
                catch (Exception ex)
                {
                    ShowStatus(ex.Message);
                }
            }

        }