Bring your Unity VR app to a fully immersive space

// Translate raw joints into gameplay actions

static bool IsIndexExtended(XRHand hand)
{
    if (!(hand.GetJoint(XRHandJointID.Wrist).TryGetPose(out var wristPose) &&
          hand.GetJoint(XRHandJointID.IndexTip).TryGetPose(out var tipPose) &&
          hand.GetJoint(XRHandJointID.IndexIntermediate).TryGetPose(out var intermediatePose)))
    {
        return false;
    }

    var wristToTip = tipPose.position - wristPose.position;
    var wristToIntermediate = intermediatePose.position - wristPose.position;
    return wristToTip.sqrMagnitude > wristToIntermediate.sqrMagnitude;
}