async void ChangedEventHandler(object sender, GeoEventArgs e)
{
if (!mLocSet)
{
CoreDispatcher disp = CoreApplication.MainView.CoreWindow.Dispatcher;
double dlat = e.Lat;
double dlon = e.Lon;
await disp.RunAsync(CoreDispatcherPriority.Normal, () => { rbNorth.IsChecked = dlat > 0;
rbSouth.IsChecked = dlat < 0;
rbEast.IsChecked = dlon > 0;
rbWest.IsChecked = dlon < 0;
tbWait.Visibility = Visibility.Collapsed; });
await disp.RunAsync(CoreDispatcherPriority.Normal, () => { ResetMapPositions(dlat, dlon); });
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal,
() =>
{
tbCurCoords.Text = GPSConverter.ConvertDeg2DegMinutes(dlat) + "," + GPSConverter.ConvertDeg2DegMinutes(dlon);
IsEnabled = true;
});
mLocSet = true;
}
}
private async void btnConvert_Click(object sender, RoutedEventArgs e)
{
string coords = tbCoords.Text;
if (cbCoords.SelectedIndex == 0)
{
string[] fields = coords.Split(',');
string slat = fields[0];
string slon = fields[1];
}
else if (cbCoords.SelectedIndex == 1)
{
string[] fields = coords.Split(',');
if (fields.Length == 2)
{
string[] latFields = fields[0].Split(' ');
string[] lonFields = fields[1].Split(' ');
int lon, lat;
if (int.TryParse(fields[0], out lat) && int.TryParse(fields[1], out lon))
{
GPSConverter c = new GPSConverter();
double newLat = c.toLat(lat, lon);
double newLon = c.toLon(lat, lon);
mMsgDlg.Content = (newLat < 0 ? "S" : "N") + GPSConverter.ConvertDeg2DegMinutes(newLat) +
(newLon < 0 ? " W" : " E") + GPSConverter.ConvertDeg2DegMinutes(newLon);
await mMsgDlg.ShowAsync();
GeoLocation.SetMapPosition(mapControl, newLat, newLon, mMsgDlg.Content, 15);
}
else
{
mMsgDlg.Content = "Incorrect Dutch Grid format. It must be of the form xxxxx,yyyyyy";
await mMsgDlg.ShowAsync();
}
}
else
{
mMsgDlg.Content = "Incorrect Dutch Grid format. It must be of the form xxxxx,yyyyyy";
await mMsgDlg.ShowAsync();
}
}
else
{
mMsgDlg.Content = coords;
await mMsgDlg.ShowAsync();
}
}
private async void btnProject_Click(object sender, RoutedEventArgs e)
{
try
{
Geolocator geolocator = new Geolocator {
DesiredAccuracyInMeters = 10
};
Geoposition pos = await geolocator.GetGeopositionAsync();
double dlat = pos.Coordinate.Point.Position.Latitude;
double dlon = pos.Coordinate.Point.Position.Longitude;
ResetMapPositions(dlat, dlon);
if (cbCoords.SelectedIndex == 0)
{
string[] fields = tbCoords.Text.Split(',');
if (fields.Length == 2)
{
string[] latCoords = fields[0].Trim(' ').Split(' ');
string[] lonCoords = fields[1].Trim(' ').Split(' ');
double lat, lon;
lat = double.Parse(latCoords[0]) + (double.Parse(latCoords[1]) / 60);
lon = double.Parse(lonCoords[0]) + (double.Parse(lonCoords[1]) / 60);
double newLon, newLat;
int angle, meters;
if (!int.TryParse(tbProjectAngle.Text, out angle))
{
mMsgDlg.Content = "Please enter an angle in the angle box on the left";
await mMsgDlg.ShowAsync();
return;
}
if (!int.TryParse(tbProjectMeters.Text, out meters))
{
mMsgDlg.Content = "Please enter the distance in the distance box on the right";
await mMsgDlg.ShowAsync();
return;
}
if (cbMeters.SelectedIndex == 1)
{
meters *= 1000;
}
else if (cbMeters.SelectedIndex == 2)
{
meters = (int)Math.Round(meters * 1609.344);
}
GPSConverter.Project(lon, lat, angle, meters, out newLon, out newLat);
mMsgDlg.Content = newLat.ToString("00.00000") + " " + newLon.ToString("000.00000") + "\n" +
GPSConverter.ConvertDeg2DegMinutes(newLat) + " " + GPSConverter.ConvertDeg2DegMinutes(newLon);
await mMsgDlg.ShowAsync();
SetMapPosition(newLat, newLon, "Projected", 15);
}
else
{
mMsgDlg.Content = "Latitude and longitude must be separated by a comma";
await mMsgDlg.ShowAsync();
}
}
else if (cbCoords.SelectedIndex == 1)
{
string[] fields = tbCoords.Text.Split(',');
if (fields.Length == 2)
{
int angle, meters;
if (!int.TryParse(tbProjectAngle.Text, out angle))
{
mMsgDlg.Content = "Please enter an angle in the angle box on the left";
await mMsgDlg.ShowAsync();
return;
}
if (!int.TryParse(tbProjectMeters.Text, out meters))
{
mMsgDlg.Content = "Please enter the distance in the distance box on the right";
await mMsgDlg.ShowAsync();
return;
}
double lat = double.Parse(fields[0].Trim());
double lon = double.Parse(fields[1].Trim());
if (cbMeters.SelectedIndex == 1)
{
meters *= 1000;
}
double newLat, newLon;
GPSConverter.Project(lon, lat, angle, meters, out newLon, out newLat);
mMsgDlg.Content = newLat.ToString("00.00000") + " " + newLon.ToString("000.00000") + "\n" +
GPSConverter.ConvertDeg2DegMinutes(newLat) + " " + GPSConverter.ConvertDeg2DegMinutes(newLon);
await mMsgDlg.ShowAsync();
SetMapPosition(newLat, newLon, "Projected", 15);
}
else
{
mMsgDlg.Content = "Latitude and longitude must be separated by a comma";
await mMsgDlg.ShowAsync();
}
}
else
{
mMsgDlg.Content = "Only Degrees and Degrees Minutes projection is implemented.";
await mMsgDlg.ShowAsync();
}
}
finally
{
tbProjectAngle.Text = "Deg";
tbProjectMeters.Text = "Dst";
}
}