Missing setter added
[u/mrichter/AliRoot.git] / STEER / AliTrackReference.h
CommitLineData
aab9c8d5 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
0742d588 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
aab9c8d5 14#include "TObject.h"
2cad796f 15#include "TMath.h"
aab9c8d5 16
ac3eaff4 17class AliExternalTrackParam;
18
aab9c8d5 19class AliTrackReference : public TObject {
20public:
2d74ba4f 21
9ac3aec9 22 enum constants {kDisappeared = -1,
23 kITS = 0,
24 kTPC = 1,
25 kFRAME = 2,
26 kTRD = 3,
27 kTOF = 4,
28 kMUON = 5
29 };
aab9c8d5 30 AliTrackReference();
9ac3aec9 31 AliTrackReference(Int_t label, Int_t id = -999);
32 AliTrackReference(const AliTrackReference &tr);
aab9c8d5 33 virtual ~AliTrackReference() {}
2d74ba4f 34
ac3eaff4 35 static AliExternalTrackParam * MakeTrack(const AliTrackReference *ref, Double_t mass);
aab9c8d5 36 virtual Int_t GetTrack() const {return fTrack;}
37 virtual void SetTrack(Int_t track) {fTrack=track;}
4930c251 38 virtual void SetLength(Float_t length){fLength=length;}
2d74ba4f 39 virtual void SetTime(Float_t time) {fTime = time;}
1c0b669a 40 virtual Float_t GetLength() const {return fLength;}
41 virtual Float_t GetTime() const {return fTime;}
84856b02 42 virtual Int_t Label() const {return fTrack;}
43 virtual void SetLabel(Int_t track) {fTrack=track;}
44 virtual Float_t R() const {return TMath::Sqrt(fX*fX+fY*fY);}
45 virtual Float_t Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);}
46 virtual Float_t Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx);}
b915b099 47 virtual Float_t Theta() const {return (fPz==0)?TMath::Pi()/2:TMath::ACos(fPz/P());}
aab9c8d5 48 virtual Float_t X() const {return fX;}
49 virtual Float_t Y() const {return fY;}
50 virtual Float_t Z() const {return fZ;}
51 virtual Float_t Px() const {return fPx;}
52 virtual Float_t Py() const {return fPy;}
53 virtual Float_t Pz() const {return fPz;}
b915b099 54 virtual Float_t P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz);}
3142ebc3 55 virtual Int_t UserId() const {return fUserId;}
9ac3aec9 56 virtual Int_t DetectorId() const {return fDetectorId;}
7a36ccc5 57 virtual void SetDetectorId(Int_t id){fDetectorId = id;}
aab9c8d5 58 virtual void SetPosition(Float_t x, Float_t y, Float_t z){fX=x; fY=y; fZ=z;}
59 virtual void SetMomentum(Float_t px, Float_t py, Float_t pz){fPx=px; fPy=py; fPz=pz;}
3142ebc3 60 virtual void SetUserId(Int_t userId){fUserId=userId;}
2d74ba4f 61
9c9d2487 62 // Methods to get position of the track reference in
63 // in the TPC/TRD/TOF Tracking coordinate system
64
65 virtual Float_t PhiPos() const {return TMath::Pi()+TMath::ATan2(-fY, -fX);}
66 virtual Float_t Alpha() const
67 {return TMath::Pi()*(20*((((Int_t)(PhiPos()*180/TMath::Pi()))/20))+10)/180.;}
68 virtual Float_t LocalX() const {return fX*TMath::Cos(-Alpha()) - fY*TMath::Sin(-Alpha());}
69 virtual Float_t LocalY() const {return fX*TMath::Sin(-Alpha()) + fY*TMath::Cos(-Alpha());}
70
e54ee89d 71 Bool_t IsSortable() const {return kTRUE;}
72 Int_t Compare(const TObject *obj) const {
73 Int_t ll = ((AliTrackReference*)obj)->GetTrack();
e54ee89d 74 if (ll < fTrack) return 1;
75 if (ll > fTrack) return -1;
a3a4f18d 76 return 0;
e54ee89d 77 }
2d74ba4f 78
65b311b3 79 virtual void Print(Option_t* opt="") const;
80
aab9c8d5 81protected:
9ac3aec9 82 Int_t fTrack; // Track number
83 Float_t fX; // X reference position of the track
84 Float_t fY; // Y reference position of the track
85 Float_t fZ; // Z reference position of the track
86 Float_t fPx; // momentum
87 Float_t fPy; // momentum
88 Float_t fPz; // momentum
89 Float_t fLength; // track lenght from its origin in cm
90 Float_t fTime; // time of flight in cm
91 Int_t fUserId; // optional Id defined by user
92 Int_t fDetectorId; // Detector Id
93 ClassDef(AliTrackReference,6) //Base class for all Alice track references
aab9c8d5 94};
95#endif