public bool Update(Frame frame)
{
_LeftHand.Update(frame);
_RightHand.Update(frame);
_PotentialHands[0].Update(frame);
_PotentialHands[1].Update(frame);
foreach (var h in frame.Hands)
{
// Skip all the currently-tracked hands
if (h.Id == _LeftHand.Id ||
h.Id == _RightHand.Id ||
h.Id == _PotentialHands[0].Id ||
h.Id == _PotentialHands[1].Id
)
{
continue;
}
// New potential hand
foreach (var ph in _PotentialHands)
{
if (ph.IsFinalized)
{
ph.Initialize(h);
break;
}
}
// else we already have two potentials? too many hands!
}
// Check for a new left hand
if (_LeftHand.IsFinalized)
{
for (var i = 0; i < 2; i++)
{
if (_PotentialHands[i].IsStabilized && (!_RightHand.IsFinalized || _PotentialHands[i].StabilizedHand.PalmPosition.x < 0))
{
_LeftHand.PromotePotentialHand(_PotentialHands[i]);
break;
}
}
}
// Check for a new left hand
if (_RightHand.IsFinalized)
{
for (var i = 0; i < 2; i++)
{
if (_PotentialHands[i].IsStabilized && (!_LeftHand.IsFinalized || _PotentialHands[i].StabilizedHand.PalmPosition.x > 0))
{
_RightHand.PromotePotentialHand(_PotentialHands[i]);
break;
}
}
}
return(true);
}
public void OnFrame(Frame frame)
{
if (!_ActiveHand.Update(frame))
{
_IsGrabbed = false;
if (!frame.Hands.IsEmpty)
{
_ActiveHand.Initialize(frame.Hands.Leftmost);
}
}
if (!_ActiveHand.IsFinalized)
{
_LogAction(_ActiveHand.Dump());
}
// Do nothing if the hand is not yet stabilized
if (!_ActiveHand.IsStabilized)
{
return;
}
// We have the same Hand as in the past and we're still grabbed.
if (_IsGrabbed)
{
if (_ActiveHand.CurrentHand.Fingers.Count >= 3)
{
_IsGrabbed = false;
}
else
{
var startY = _ActiveHand.StabilizedHand.StabilizedPalmPosition.y;
var y = _ActiveHand.CurrentHand.StabilizedPalmPosition.y;
//_LogAction(String.Format("Hand {0} now at {1:0.0} was grabbed at {2:0.0}.", _ActiveHand.Id, y, startY));
if (y < startY - 15)
{
for (var i = 0; i < Math.Floor((startY - y) / 20); i++)
{
Native.ScrollActiveWindow(false);
}
}
else if (y > startY + 15)
{
for (var i = 0; i < Math.Floor((y - startY) / 20); i++)
{
Native.ScrollActiveWindow(true);
}
}
}
}
else if (_ActiveHand.CurrentHand.Fingers.Count < 2)
{
_IsGrabbed = true;
}
foreach (var g in frame.Gestures().Where(g => g.Type == Gesture.GestureType.TYPECIRCLE))
{
var circle = new CircleGesture(g);
var isClockwise = (circle.Pointable.Direction.AngleTo(circle.Normal) <= Math.PI / 4);
if (circle.Progress < _Progress || circle.Progress > _Progress + 1)
{
Native.ScrollActiveWindow(!isClockwise);
_Progress = Convert.ToInt32(Math.Floor(circle.Progress));
}
}
}
