/// <summary>
/// Maps the 3D hand session position to the current screen.
/// </summary>
/// <param name="session">The current hand session</param>
/// <param name="targetWidth">The target mapping width</param>
/// <param name="targetHeight">The target mapping height</param>
/// <returns>2D Point representing the hand position mapped to the screen</returns>
public virtual Point MapPositionToScreen(HandSession session, double targetWidth, double targetHeight)
{
Point3D position = session.PositionProjective;
double x = MathUtility.MapValue(position.X, 10, 630, 0, targetWidth);
double y = MathUtility.MapValue(position.Y, 30, 450, 0, targetHeight);
return new Point(x, y);
}
private void UpdateHandSession(int id, OpenNI.Point3D position, OpenNI.Point3D shoulderPosition)
{
lock (HandSessions)
{
if (!HandSessions.ContainsKey(id))
{
var session = new HandSession();
//session.PoseChanged += session_PoseChanged;
session.Id = id;
HandSessions.Add(session.Id, session);
}
HandSessions[id].xnPosition = position;
HandSessions[id].Position = MotionHelper.XnPoint3DToPoint3D(position);
HandSessions[id].ShoulderPosition = MotionHelper.XnPoint3DToPoint3D(shoulderPosition);
OpenNI.Point3D projective = depthGenerator.ConvertRealWorldToProjective(position);
HandSessions[id].PositionProjective = MotionHelper.XnPoint3DToPoint3D(projective);
OnPointUpdated(id, HandSessions[id]);
}
}
private void OnPointUpdated(int id, HandSession session)
{
if (PointUpdated == null)
return;
PointUpdated(null, new HandPointEventArgs(id, HandPointStatus.Move, session));
}
private void OnPointDestroyed(int id, HandSession session)
{
if (PointDestroyed == null)
return;
PointDestroyed(null, new HandPointEventArgs(id, HandPointStatus.Up, session));
}
internal void TouchUp(HandPointEventArgs e)
{
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
if (!this.IsActive)
{
return;
}
this.lastEventArgs = e;
this.Session = null;
this.ReportUp();
this.Deactivate();
lastEventType = EventType.TouchUp;
}
internal void TouchMove(HandPointEventArgs e)
{
if (!this.IsActive)
{
return;
}
this.Session = e.Session;
CoalesceEvents(e);
}
internal void TouchDown(HandPointEventArgs e)
{
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
this.lastEventArgs = e;
lastEventPosition = screen.MapPositionToScreen(e.Session);
lastEventTime = DateTime.Now;
lastEventType = EventType.TouchDown;
this.Session = e.Session;
var source = PresentationSource.FromVisual(this.rootWindow);
this.SetActiveSource(source);
this.Activate();
this.ReportDown();
}
public Point MapPositionToScreen(HandSession session)
{
return MapPositionToScreen(session, this.ScreenWidth, this.ScreenHeight);
}
public virtual bool IsSessionInBounds(HandSession session)
{
return true;
}
public HandPointEventArgs(int id, HandPointStatus status, HandSession session)
{
this.Id = id;
this.Status = status;
this.Session = session;
}