PICO使用MRTK3手势交互

        protected override void UpdateInput(XRControllerState controllerState)
        {
            base.UpdateInput(controllerState);

            using (UpdateTrackingInputPerfMarker.Auto())
            {
                if (controllerState == null)
                    return;

                // Cast to expose hand state.
                ArticulatedHandControllerState handControllerState = controllerState as ArticulatedHandControllerState;

                // If we still don't have an aggregator, then don't update selects.
                if (XRSubsystemHelpers.HandsAggregator == null) { return; }

                bool gotPinchData = XRSubsystemHelpers.HandsAggregator.TryGetPinchProgress(
                handNode,
                out bool isPinchReady,
                out bool isPinching,
                out float pinchAmount
            );

                // If we got pinch data, write it into our select interaction state.
                if (gotPinchData)
                {
                    // Workaround for missing select actions on devices without interaction profiles
                    // for hands, such as Varjo and Quest. Should be removed once we have universal
                    // hand interaction profile(s) across vendors.

                    // Debounce the polyfill pinch action value.
                    bool isPinched = pinchAmount >= (pinchedLastFrame ? 0.9f : 1.0f);
#if !PICO_INSTALL
    // Inject our own polyfilled state into the Select state if no other control is bound.
    if (!selectAction.action.HasAnyControls())
{
    controllerState.selectInteractionState.active = isPinched;
    controllerState.selectInteractionState.activatedThisFrame = isPinched && !pinchedLastFrame;
    controllerState.selectInteractionState.deactivatedThisFrame = !isPinched && pinchedLastFrame;
}
 
    if (!selectActionValue.action.HasAnyControls())
{
    controllerState.selectInteractionState.value = pinchAmount;
}
 
    // Also make sure we update the UI press state.
    if (!uiPressAction.action.HasAnyControls())
{
    controllerState.uiPressInteractionState.active = isPinched;
    controllerState.uiPressInteractionState.activatedThisFrame = isPinched && !pinchedLastFrame;
    controllerState.uiPressInteractionState.deactivatedThisFrame = !isPinched && pinchedLastFrame;
}
 
    if (!uiPressActionValue.action.HasAnyControls())
{
    controllerState.uiPressInteractionState.value = pinchAmount;
}
 
    pinchedLastFrame = isPinched;
#else
                    // Debounced.

                    controllerState.selectInteractionState.active = isPinched;
                    controllerState.selectInteractionState.activatedThisFrame = isPinched && !pinchedLastFrame;
                    controllerState.selectInteractionState.deactivatedThisFrame = !isPinched && pinchedLastFrame;
                    controllerState.selectInteractionState.value = pinchAmount;


                    controllerState.uiPressInteractionState.active = isPinched;
                    controllerState.uiPressInteractionState.activatedThisFrame = isPinched && !pinchedLastFrame;
                    controllerState.uiPressInteractionState.deactivatedThisFrame = !isPinched && pinchedLastFrame;
                    controllerState.uiPressInteractionState.value = pinchAmount;

                    pinchedLastFrame = isPinched;
#endif
                }

                handControllerState.PinchSelectReady = isPinchReady;
            }
        }