Line data    Source code

       1             : #ifndef ALITRACKREFERENCE_H
       2             : #define ALITRACKREFERENCE_H
       3             : /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
       4             :  * See cxx source for full Copyright notice                               */
       5             : 
       6             : /* $Id$ */
       7             : 
       8             : // 
       9             : // Track Reference object is created every time particle is 
      10             : // crossing detector bounds. 
      11             : // The object is created by Step Manager
      12             : //
      13             : 
      14             : #include "TObject.h"
      15             : #include "TMath.h"
      16             : 
      17           0 : class AliTrackReference : public TObject {
      18             : public:
      19             : 
      20             :     enum constants {kDisappeared = -1,
      21             :                     kITS   = 0,
      22             :                     kTPC   = 1,
      23             :                     kFRAME = 2,
      24             :                     kTRD   = 3,
      25             :                     kTOF   = 4,
      26             :                     kMUON  = 5,
      27             :                     kHMPID = 6,
      28             :                     kT0    = 7,
      29             :                     kEMCAL = 8,
      30             :                     kPMD   = 10,
      31             :                     kFMD   = 12,
      32             :                     kVZERO = 14,
      33             :                     kZDC   = 15,
      34             :                     kMFT   = 16,
      35             :                     kHALL  = 17,
      36             :                     kFIT  = 18, //alla
      37             :                     kAD = 19
      38             :     };
      39             :   AliTrackReference();
      40             :   AliTrackReference(Int_t label, Int_t id = -999);
      41             :   AliTrackReference(const AliTrackReference &tr);
      42      291312 :   virtual ~AliTrackReference() {}
      43             : 
      44             : //  static AliExternalTrackParam * MakeTrack(const AliTrackReference *ref, Double_t mass);
      45      105018 :   virtual Int_t GetTrack() const {return fTrack;}
      46        8894 :   virtual void SetTrack(Int_t track) {fTrack=track;}
      47           0 :   virtual void SetLength(Float_t length){fLength=length;}
      48           0 :   virtual void SetTime(Float_t time) {fTime = time;}
      49           0 :   virtual Float_t GetLength() const {return fLength;}
      50           0 :   virtual Float_t GetTime() const {return fTime;}
      51      408534 :   virtual Int_t Label() const {return fTrack;}
      52           0 :   virtual void SetLabel(Int_t track) {fTrack=track;}
      53           0 :   virtual Float_t R() const {return TMath::Sqrt(fX*fX+fY*fY);}
      54           0 :   virtual Float_t Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);}
      55           0 :   virtual Float_t Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx);}
      56           0 :   virtual Float_t Theta() const {return (fPz==0)?TMath::Pi()/2:TMath::ACos(fPz/P());}
      57           0 :   virtual Float_t X() const {return fX;}
      58           0 :   virtual Float_t Y() const {return fY;}
      59           0 :   virtual Float_t Z() const {return fZ;}
      60           0 :   virtual Float_t Px() const {return fPx;}
      61           0 :   virtual Float_t Py() const {return fPy;}
      62           0 :   virtual Float_t Pz() const {return fPz;}
      63           0 :   virtual Float_t P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz);}
      64           0 :   virtual Int_t   UserId() const {return fUserId;}
      65           0 :   virtual Int_t   DetectorId() const {return fDetectorId;}
      66           0 :   virtual void SetDetectorId(Int_t id){fDetectorId = id;}
      67           0 :   virtual void SetPosition(Float_t x, Float_t y, Float_t z){fX=x; fY=y; fZ=z;}
      68           0 :   virtual void SetMomentum(Float_t px, Float_t py, Float_t pz){fPx=px; fPy=py; fPz=pz;}
      69         680 :   virtual void SetUserId(Int_t userId){fUserId=userId;}
      70             :  
      71             :   // Methods to get position of the track reference in 
      72             :   // in the TPC/TRD/TOF Tracking coordinate system
      73             : 
      74           0 :   virtual Float_t PhiPos() const {return TMath::Pi()+TMath::ATan2(-fY, -fX);}
      75             :   virtual Float_t Alpha() const 
      76           0 :     {return TMath::Pi()*(20*((((Int_t)(PhiPos()*180/TMath::Pi()))/20))+10)/180.;}
      77           0 :   virtual Float_t LocalX() const {return fX*TMath::Cos(-Alpha()) - fY*TMath::Sin(-Alpha());}
      78           0 :   virtual Float_t LocalY() const {return fX*TMath::Sin(-Alpha()) + fY*TMath::Cos(-Alpha());}
      79             : 
      80           0 :   Bool_t IsSortable() const {return kTRUE;}
      81             :   Int_t Compare(const TObject *obj) const {
      82           0 :     Int_t ll = ((AliTrackReference*)obj)->GetTrack();
      83           0 :     if (ll < fTrack) return 1;
      84           0 :     if (ll > fTrack) return -1;
      85           0 :     return 0;
      86           0 :   }
      87             : 
      88             :   virtual void Print(Option_t* opt="") const;
      89             :     
      90             : protected:
      91             :   Int_t     fTrack;      // Track number
      92             :   Float_t   fX;          // X reference position of the track
      93             :   Float_t   fY;          // Y reference position of the track
      94             :   Float_t   fZ;          // Z reference position of the track
      95             :   Float_t   fPx;         // momentum
      96             :   Float_t   fPy;         // momentum
      97             :   Float_t   fPz;         // momentum
      98             :   Float_t   fLength;     // track lenght from its origin in cm
      99             :   Float_t   fTime;       // time of flight in cm  
     100             :   Int_t     fUserId;     // optional Id defined by user
     101             :   Int_t     fDetectorId; // Detector Id
     102         180 :   ClassDef(AliTrackReference,7)  //Base class for all Alice track references
     103             : };
     104             : #endif