PinchDetector lag with parent motion

[renetto]

Hi,

I experience the following lag with the PinchDetector when there is absolute motion (my LMHeadMountedRig is a child of a moving parent).
So, I've attached two spheres, one to the index finger (using PinchDetector for retriving the position), one on the thumb finger (using LeapProvider). In the first case the lag is still present, while using LeapProvider there is no lag.

Is it a known issue?

[KBR_jason]

Hi, I am having this same issue now. The player is on a train and I have a lever that looks at the pinchDetector.Position but it is so laggy. Everything works fine when the train is not moving.

Have you resolved your issue or have any tips to fix this?

[renetto]

Hi, it seems that with the last update of the unitypackage the problem is solved!

Anyway, you can try to modify the LeapRTS script for getting the position information from the LeapProvider instead of the pinchDetector!

[user-295940283]

Hey renetto,
can you show how do you get pinch position using LeapProvider?

Thanks

[renetto]

Contrary to what I've said in the last message, the bug is still present also in the last version of the package.

These my steps to solve:

• Create two children, one of CapsuleHand_R and one for CapsuleHand_L.
  
• Add a PinchDetector component to them.
• Edit the beginning of the script in this way:

public class PinchDetector : Detector {
   enum handSide { RIGHT, LEFT };
   [SerializeField]
   private LeapProvider lp;
   [SerializeField]
   private handSide hs;

• Edit the ensurePinchInfoUpToDate function in this way, just after _didChange = false;
  .

if (lp.CurrentFrame.Hands.Count == 0)
    return;

//Hand hand = _handModel.GetLeapHand();
var hands = lp.CurrentFrame.Hands;
Hand hand = null;
foreach (Hand h in hands) {
   handSide s = (h.IsRight) ? handSide.RIGHT : handSide.LEFT;
   if (s == hs) {
      hand = h;
      break;
   }

}

• Drag the LeapServiceProvider component to the inspector and choose the hand side.
• Add LeapRTS to your object and drag the modified LeapPinchDetector.

Here the result:

[KBR_jason]

Thanks I'll look into your solution when I get some time. In the mean time I just used the position of the rendered bone on the same finger. It works nicely but a bit ugly.

Cheers.