/// <summary>
/// Hidden UIelement carrying SessionId. It is used to synchronize data between XmlDataProvider
/// and object data context in order to call Edit and Delete commands on the right session record.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void lbId_TextChanged(object sender, TextChangedEventArgs e)
{
SessionsViewModel session = (SessionsViewModel)this.DataContext;
TextBox txt = (TextBox)sender;
session.SessionId = Int32.Parse(txt.Text);
}
private SessionsViewModel _sessionsViewModel; // List of sessions
public ApplicationViewModel()
{
// Navigation pages
// Sessions
_sessionsViewModel = new SessionsViewModel(this);
// Add all navigation pages.
PageViewModels.Add(_sessionsViewModel);
// Set up initial page.
CurrentPageViewModel = PageViewModels[0];
}
/// <summary>
/// Load calibration data of the selected ID. (if a calibration had already been performed.)
/// Returns the filename of the selected video for calibration
/// Update calibration information of calibration view model.
/// </summary>
/// <param name="onlyFilename">Gets only filename or load full information</param>
public string LoadCalibrationData(bool onlyFilename)
{
string filename = null;
// This attribution is not inside the constructor method because it may be called every time the page is loaded.
SessionsViewModel sessionsCtrl = (SessionsViewModel)_app.PageViewModels[0];
_selectedId = sessionsCtrl.SelectedSessionId;
if (_selectedId > 0)
{
var page = _app.PageViewModels.Where(p => p.Name == "Session View");
// If exist already an instance of SessionViewModel, then use it, or instantiate one.
if (page.Any())
{
_sessionVM = (SessionViewModel)page;
}
else
{
_sessionVM = new SessionViewModel(_app);
}
// Gets persistent Session information.
xmlSessionDoc = _sessionVM.XmlSessionDoc;
// Find the selected session in order to pick up the calibration video.
string xpath = "/Sessions/Session[@Id='{0}']";
xpath = String.Format(xpath, _selectedId);
xNode = xmlSessionDoc.DocumentElement.SelectSingleNode(xpath);
if (xNode != null)
{
_session = _sessionVM.LoadSession(xNode);
SelectedName = _session.SessionName;
foreach (VideoModel video in _session.VideoList)
{
if (video.IsCalibration)
{
filename = video.Filename;
}
}
if (_session.Calibration != null && !onlyFilename)
{
_jointType = _session.Calibration.JointType;
NumFrames = _session.Calibration.NumFrames;
CalibrationResult = _session.Calibration.Position;
CalibrationThreshold = _session.Calibration.Threshold;
CalibrationSD = _session.Calibration.SD;
InitialTime = _session.Calibration.InitialTime;
CalibrationEstimated = _session.Calibration.Estimated;
RightShankLength = _session.Calibration.RightShankLength;
RightThighLength = _session.Calibration.RightThighLength;
LeftShankLength = _session.Calibration.LeftShankLength;
LeftThighLength = _session.Calibration.LeftThighLength;
ConvertSelectedJointIndex();
_app.SessionsViewModel.CurrentSession = _session;
}
}
}
if (filename == null)
{
CalibrationStatus = "Configuring ....";
ProcessedFrames = 0;
CalibrationResult = new Vector3(0, 0, 0);
CalibrationSD = new Vector3(0, 0, 0);
CalibrationThreshold = new Vector3(0, 0, 0);
CalibrationEstimated = new Vector3(0, 0, 0);
RightThighLength = 0;
RightShankLength = 0;
LeftThighLength = 0;
LeftShankLength = 0;
InitialTime = 0;
SelectedJointIndex = 0;
NumFrames = 0;
}
return(filename);
}