private async void GO_Click(object sender, RoutedEventArgs e)
{
//take a picture of the person giving the order
var peopleIdentified = await TakePictureAndIdentifyAsync();
var result = await WebClientAccess.Order(CommandTextBox.Text);
var pins = GetAuthorizedPins(result.Entity, peopleIdentified);
foreach (var pin in pins)
{
switch (result.Intent)
{
case Intent.LightOn:
pin.Write(GpioPinValue.Low);
break;
case Intent.LightOff:
pin.Write(GpioPinValue.High);
break;
case Intent.None:
default:
break;
}
}
CommandTextBox.Text = "";
CommandTextBox.Focus(FocusState.Keyboard);
}
private async Task <IList <string> > TakePictureAndIdentifyAsync()
{
IList <string> peopleIdentified = new List <string>();
if (!isCameraInitialized)
{
await medCapture.InitializeAsync();
isCameraInitialized = true;
}
var imgFmt = ImageEncodingProperties.CreateJpeg();
var bmImage = new BitmapImage();
var fileName = Guid.NewGuid().ToString() + ".jpg";
var collisionOption = CreationCollisionOption.GenerateUniqueName;
StorageFile file = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(fileName, collisionOption);
// captures and stores image file
MessagesTextBox.Text = $"Taking picture\n";
await medCapture.CapturePhotoToStorageFileAsync(imgFmt, file);
using (var strm = await file.OpenReadAsync())
{
//start with clean list
await bmImage.SetSourceAsync(strm);
image.Source = bmImage;
image.HorizontalAlignment = HorizontalAlignment.Center;
strm.Seek(0);
MessagesTextBox.Text = $"Sending pictue for detection\n";
peopleIdentified = await WebClientAccess.GetPeopleAsync(strm.AsStreamForRead());
}
//delete image file
await file.DeleteAsync();
return(peopleIdentified);
}