protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
RollPitchJoystick.StopJoystick();
YawGazJoystick.StopJoystick();
mediaElem.Source = null;
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (await _droneClient.ConnectAsync())
{
TakeOffButton.IsEnabled = true;
ResetEmergencyButton.IsEnabled = true;
FlatTrimButton.IsEnabled = true;
TakePictureButton.IsEnabled = true;
RecordVideoButton.IsEnabled = true;
FlipButton.IsEnabled = true;
RollPitchJoystick.StartJoystick();
YawGazJoystick.StartJoystick();
//Outlined to avoid unwanted takoff during debug
//await Task.Run(async () =>
//{
// try
// {
// if (_speechRecognizer == null)
// {
// _speechRecognizer = new SpeechRecognizer();
// _speechRecognizer.Grammars.AddGrammarFromList("DroneCommands", new List<string>
// {
// "Take off", "Take off the drone", "Take the drone off",
// "Land", "Land the drone"
// });
// }
// try
// {
// while (true)
// {
// Dispatcher.BeginInvoke(() =>
// {
// if (TextRecognizer.Text != "Voice: listening...")
// {
// TextRecognizer.Foreground = new SolidColorBrush(Colors.Green);
// TextRecognizer.Text = "Voice: listening...";
// }
// });
// var result = await _speechRecognizer.RecognizeAsync();
// //if (result.TextConfidence == SpeechRecognitionConfidence.High)
// if (result.Text.Length > 0)
// {
// Dispatcher.BeginInvoke(() =>
// {
// switch (result.Text)
// {
// case "Take off":
// case "Take off the drone":
// case "Take the drone off":
// _droneClient.TakeOff();
// break;
// case "Land":
// case "Land the drone":
// _droneClient.Land();
// break;
// }
// });
// await Task.Delay(1000);
// }
// else
// await Task.Delay(500);
// }
// }
// catch (Exception ex)
// {
// Debug.WriteLine(ex);
// }
// Dispatcher.BeginInvoke(() =>
// {
// TextRecognizer.Foreground = new SolidColorBrush(Colors.Red);
// TextRecognizer.Text = "Voice: unknown";
// });
// }
// catch (Exception ex)
// {
// Debug.WriteLine(ex);
// }
//});
}
}
