LVL1::TriggerTowerKey Node1 LVL1::TriggerTowerKey   + TriggerTowerKey() + TriggerTowerKey() + ~TriggerTowerKey() + ttKey() + ttKey() + ttKey() + region() + dEta() + dPhi() - calculateTriggerBin() Node2 LVL1::KeyUtilities # m_iphi # m_ieta # m_eta # m_phi # m_phiBin # m_etaBin # m_centralPhi # m_centralEta # m_debug + ~KeyUtilities() + eta() + dEta() + phi() + dPhi() + key() + key() + coord() # KeyUtilities() # KeyUtilities() # convertCoordsToIntegers() # calculateTriggerBin() # sign() # sign() # round() # sharpRound() # sharpRound2() # setupThisKeyValues() Node2->Node1