tronado_field|: debug centripetal force. set innerR to getOutline() and get a better tornado shape.
tronado_field|: simple centripetal force
tronado_field|: debug centripetal force. improve getOutline().
tronado_field|: +getTrunkDisturbance() in addSimpleCentripetalForce()
tronado_field|: +getTrunkDisturbance() in addCentripetalForce()