private void DrawDebugLines()
{
HandModel hand = GetComponent <HandModel>();
Debug.DrawLine(hand.GetElbowPosition(), hand.GetWristPosition(), Color.red);
Debug.DrawLine(hand.GetWristPosition(), hand.GetPalmPosition(), Color.white);
Debug.DrawLine(hand.GetPalmPosition(),
hand.GetPalmPosition() + hand.GetPalmNormal(), Color.black);
Debug.Log(Vector3.Dot(hand.GetPalmDirection(), hand.GetPalmNormal()));
}