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//--------------------------------------------------------------------------------------------------
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// $Id: CaloTower.h,v 1.15 2009/06/18 22:56:30 bendavid Exp $
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//
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// CaloTower
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//
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// This class holds calo tower information. Note that the energy of the tower does not necessarily
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// have to be greater 0. As such E() and Et() can return negative values. In those cases the
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// FourVectorM will be 0, and also Pt() will return 0.
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//
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// Authors: S.Xie
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//--------------------------------------------------------------------------------------------------
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#ifndef MITANA_DATATREE_CALOTOWER_H
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#define MITANA_DATATREE_CALOTOWER_H
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#include <TMath.h>
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#include "MitCommon/DataFormats/interface/Vect3C.h"
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#include "MitAna/DataCont/interface/CacheFlag.h"
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#include "MitAna/DataTree/interface/DataObject.h"
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namespace mithep
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{
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class CaloTower : public DataObject
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{
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public:
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CaloTower() : fEmEnergy(0), fHadEnergy(0), fOuterEnergy(0), fMass(0) {}
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Double_t E() const { return (fEmEnergy + fHadEnergy); }
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Double_t EmEt() const { return fEmEnergy*TMath::Sin(Theta()); }
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Double_t Eta() const { return fPosition.Eta(); }
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Double_t Et() const { return E()*TMath::Sin(Theta()); }
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Double_t EtWithHO() const { return EWithHO()*TMath::Sin(Theta()); }
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Double_t EWithHO() const { return (fEmEnergy + fHadEnergy + fOuterEnergy); }
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Double_t EmEnergy() const { return fEmEnergy; }
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Double_t HadEnergy() const { return fHadEnergy; }
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Double_t HadEt() const { return fHadEnergy*TMath::Sin(Theta()); }
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Double_t Mass() const { return fMass; }
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const FourVectorM &Mom() const;
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Double_t Phi() const { return fPosition.Phi(); }
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Double_t Pt() const { Double_t r=Et(); if(r<0) r=0; return r; }
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EObjType ObjType() const { return kCaloTower; }
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Double_t OuterEnergy() const { return fOuterEnergy; }
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Double_t OuterEt() const { return fOuterEnergy*TMath::Sin(Theta()); }
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const ThreeVectorC &Position() const;
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Double_t Theta() const { return Position().Theta(); }
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void SetEmEnergy(Double_t emEnergy)
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{ fEmEnergy = emEnergy; ClearMom(); }
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void SetHadEnergy(Double_t hadEnergy)
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{ fHadEnergy = hadEnergy; ClearMom(); }
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void SetOuterEnergy(Double_t outerEnergy)
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{ fOuterEnergy = outerEnergy; ClearMom(); }
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void SetMass(Double_t mass) { fMass = mass; }
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void SetPosition(Double_t x, Double_t y, Double_t z)
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{ fPosition.SetXYZ(x,y,z); ClearMom(); ClearPos(); }
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protected:
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void ClearMom() const { fCacheMomFlag.ClearCache(); }
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void ClearPos() const { fCachePosFlag.ClearCache(); }
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void GetMom() const;
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void GetPos() const;
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Vect3C fPosition; //position of tower
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Double32_t fEmEnergy; //[0,0,14]tower energy in Ecal
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Double32_t fHadEnergy; //[0,0,14]tower energy in Hcal
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Double32_t fOuterEnergy; //[0,0,14]tower energy in outer Hcal
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Double32_t fMass; //[0,0,14]tower mass
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mutable CacheFlag fCacheMomFlag; //||cache validity flag for momentum
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mutable FourVectorM fCachedMom; //!cached momentum vector
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mutable CacheFlag fCachePosFlag; //||cache validity flag for position
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mutable ThreeVectorC fCachedPos; //!cached position vector
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ClassDef(CaloTower, 2) // Calo tower class
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};
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}
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//--------------------------------------------------------------------------------------------------
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inline void mithep::CaloTower::GetMom() const
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{
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// Compute four momentum.
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Double_t energy = E();
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if (energy > 0) {
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Double_t pt = TMath::Sin(Theta())*TMath::Sqrt(energy*energy + fMass*fMass);
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fCachedMom.SetCoordinates(pt,Eta(),Phi(),Mass());
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}
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else
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fCachedMom = mithep::FourVectorM();
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}
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//--------------------------------------------------------------------------------------------------
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inline void mithep::CaloTower::GetPos() const
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{
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// Compute position.
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fCachedPos.SetCoordinates(fPosition.Rho(), fPosition.Eta(), fPosition.Phi());
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}
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//--------------------------------------------------------------------------------------------------
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inline const mithep::FourVectorM &mithep::CaloTower::Mom() const
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{
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// Return cached momentum value.
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if (!fCacheMomFlag.IsValid()) {
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GetMom();
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fCacheMomFlag.SetValid();
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}
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return fCachedMom;
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}
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//--------------------------------------------------------------------------------------------------
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inline const mithep::ThreeVectorC &mithep::CaloTower::Position() const
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{
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// Return cached momentum value.
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if (!fCachePosFlag.IsValid()) {
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GetPos();
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fCachePosFlag.SetValid();
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}
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return fCachedPos;
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}
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#endif
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