/// <summary>
/// prevents this class from invoking a system-wide state change until
/// the new state is confirmed to stick across a certain number of frames
/// -- this stops single-frame hand-tracking noise (which is rampant on Quest)
/// from causing strobe-flickering state changes
/// </summary>
private IEnumerator ClearFalsePositives(bool right)
{
int stickThreshold = 5;
HandGestureState startingState = (right) ? currentRightHandGestureState : currentLeftHandGestureState;
HandGestureState previousState = (right) ? previousRightState : previousLeftState;
if (startingState == HandGestureState.DragSelection)
{
stickThreshold *= 2;
}
for (int i = 0; i < stickThreshold; i++)
{
yield return(new WaitForEndOfFrame());
if (startingState != ((right) ? currentRightHandGestureState : currentLeftHandGestureState))
{
yield break;
}
}
if (right)
{
RightStateChanged?.Invoke(startingState, previousState);
}
else
{
LeftStateChanged?.Invoke(startingState, previousState);
}
}
private void ActivateNewState(HandGestureState newState, bool right)
{
if (right)
{
currentRightHandGestureState = newState;
if (currentRightHandGestureState != previousRightState)
{
RightStateChanged?.Invoke(currentRightHandGestureState, previousRightState);
Debug.Log("OculusHandInput: RightStateChange invoked - newState: " + newState);
}
//StartCoroutine(ClearFalsePositives(true));
}
else
{
currentLeftHandGestureState = newState;
if (currentLeftHandGestureState != previousLeftState)
{
//StartCoroutine(ClearFalsePositives(false));
LeftStateChanged?.Invoke(currentLeftHandGestureState, previousLeftState);
}
}
}
void UpdateHandState(bool right)
{
//ADM.QLog("updating hand state for " + ((right) ? "right " : "left ") + "hand.");
//ADM.QLog("Current state: " + currentRightHandGestureState +
// " middle " + (((rightHandState & TouchStates.middle) != 0) ? "on" : "off")
// + " pointer " + (((rightHandState & TouchStates.pointer) != 0) ? "on" : "off")
// + " thumb " + (((rightHandState & TouchStates.thumb) != 0) ? "on" : "off")
//);
HandGestureState previousState = (right) ? currentRightHandGestureState : currentLeftHandGestureState;
if (right)
{
// Selection conditions: middle down, pointer up, thumb up
if (currentRightHandGestureState != HandGestureState.Selection &&
(rightHandState & TouchStates.middle) != 0 &&
(rightHandState & TouchStates.pointer) == 0 &&
(rightHandState & TouchStates.thumb) == 0)
{
currentRightHandGestureState = HandGestureState.Selection;
_selectionRightStartingMarker.transform.position = RightMarker.Instance.transform.position;
_selectionRightStartingMarker.transform.rotation = RightMarker.Instance.transform.rotation;
}
// Insertion conditions: all three down
if (currentRightHandGestureState != HandGestureState.Neutral &&
currentRightHandGestureState != HandGestureState.Insert &&
(rightHandState & TouchStates.middle) != 0 &&
(rightHandState & TouchStates.pointer) != 0 &&
(rightHandState & TouchStates.thumb) != 0)
{
currentRightHandGestureState = HandGestureState.Insert;
}
// SqueezeAll conditions: all three down from neutral
if (currentRightHandGestureState == HandGestureState.Neutral &&
(rightHandState & TouchStates.middle) != 0 &&
(rightHandState & TouchStates.pointer) != 0 &&
(rightHandState & TouchStates.thumb) != 0)
{
currentRightHandGestureState = HandGestureState.SqueezeAll;
}
// DragSelection conditions: middle and thumb down, pointer up
if (currentRightHandGestureState != HandGestureState.DragSelection &&
(rightHandState & TouchStates.middle) != 0 &&
(rightHandState & TouchStates.pointer) == 0 &&
(rightHandState & TouchStates.thumb) != 0)
{
currentRightHandGestureState = HandGestureState.DragSelection;
}
// Neutral condtions: all up
if (currentRightHandGestureState != HandGestureState.Neutral &&
(rightHandState & TouchStates.middle) == 0 &&
(rightHandState & TouchStates.pointer) == 0 &&
(rightHandState & TouchStates.thumb) == 0)
{
currentRightHandGestureState = HandGestureState.Neutral;
}
// Click conditions:
if (currentRightHandGestureState != HandGestureState.Click &&
(rightHandState & TouchStates.middle) != 0 &&
(rightHandState & TouchStates.pointer) != 0 &&
(rightHandState & TouchStates.thumb) == 0)
{
currentRightHandGestureState = HandGestureState.Click;
}
RightStateChanged?.Invoke(currentRightHandGestureState, previousState);
}
else
{
if (currentLeftHandGestureState != HandGestureState.Selection &&
(leftHandState & TouchStates.middle) != 0 &&
(leftHandState & TouchStates.pointer) == 0 &&
(leftHandState & TouchStates.thumb) == 0)
{
currentLeftHandGestureState = HandGestureState.Selection;
_selectionLeftStartingMarker.transform.position = LeftMarker.Instance.transform.position;
_selectionLeftStartingMarker.transform.rotation = LeftMarker.Instance.transform.rotation;
}
if (currentRightHandGestureState != HandGestureState.Neutral &&
currentRightHandGestureState != HandGestureState.Insert &&
(leftHandState & TouchStates.middle) != 0 &&
(leftHandState & TouchStates.pointer) != 0 &&
(leftHandState & TouchStates.thumb) != 0)
{
currentLeftHandGestureState = HandGestureState.Insert;
}
if (currentLeftHandGestureState == HandGestureState.Neutral &&
(leftHandState & TouchStates.middle) != 0 &&
(leftHandState & TouchStates.pointer) != 0 &&
(leftHandState & TouchStates.thumb) != 0)
{
currentLeftHandGestureState = HandGestureState.SqueezeAll;
}
if (currentLeftHandGestureState != HandGestureState.DragSelection &&
(leftHandState & TouchStates.middle) != 0 &&
(leftHandState & TouchStates.pointer) == 0 &&
(leftHandState & TouchStates.thumb) != 0)
{
currentLeftHandGestureState = HandGestureState.DragSelection;
}
if (currentLeftHandGestureState != HandGestureState.Neutral &&
(leftHandState & TouchStates.middle) == 0 &&
(leftHandState & TouchStates.pointer) == 0 &&
(leftHandState & TouchStates.thumb) == 0)
{
currentLeftHandGestureState = HandGestureState.Neutral;
}
if (currentLeftHandGestureState != HandGestureState.Click &&
(leftHandState & TouchStates.middle) != 0 &&
(leftHandState & TouchStates.pointer) != 0 &&
(leftHandState & TouchStates.thumb) == 0)
{
currentLeftHandGestureState = HandGestureState.Click;
}
LeftStateChanged?.Invoke(currentLeftHandGestureState, previousState);
}
}
