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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 | |
17 | class AliTrackReference : public TObject { | |
18 | public: | |
2d74ba4f | 19 | |
9ac3aec9 | 20 | enum constants {kDisappeared = -1, |
21 | kITS = 0, | |
22 | kTPC = 1, | |
23 | kFRAME = 2, | |
24 | kTRD = 3, | |
25 | kTOF = 4, | |
8a388651 | 26 | kMUON = 5, |
a95acbbb | 27 | kHMPID = 6, |
dd7dc224 | 28 | kT0 = 7, |
c1446131 | 29 | kEMCAL = 8, |
30 | kPMD = 10, | |
7b1a8873 | 31 | kFMD = 12, |
32 | kVZERO = 14 | |
9ac3aec9 | 33 | }; |
aab9c8d5 | 34 | AliTrackReference(); |
9ac3aec9 | 35 | AliTrackReference(Int_t label, Int_t id = -999); |
36 | AliTrackReference(const AliTrackReference &tr); | |
aab9c8d5 | 37 | virtual ~AliTrackReference() {} |
2d74ba4f | 38 | |
066cef28 | 39 | // static AliExternalTrackParam * MakeTrack(const AliTrackReference *ref, Double_t mass); |
aab9c8d5 | 40 | virtual Int_t GetTrack() const {return fTrack;} |
41 | virtual void SetTrack(Int_t track) {fTrack=track;} | |
4930c251 | 42 | virtual void SetLength(Float_t length){fLength=length;} |
2d74ba4f | 43 | virtual void SetTime(Float_t time) {fTime = time;} |
1c0b669a | 44 | virtual Float_t GetLength() const {return fLength;} |
45 | virtual Float_t GetTime() const {return fTime;} | |
84856b02 | 46 | virtual Int_t Label() const {return fTrack;} |
47 | virtual void SetLabel(Int_t track) {fTrack=track;} | |
48 | virtual Float_t R() const {return TMath::Sqrt(fX*fX+fY*fY);} | |
49 | virtual Float_t Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);} | |
50 | virtual Float_t Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx);} | |
b915b099 | 51 | virtual Float_t Theta() const {return (fPz==0)?TMath::Pi()/2:TMath::ACos(fPz/P());} |
aab9c8d5 | 52 | virtual Float_t X() const {return fX;} |
53 | virtual Float_t Y() const {return fY;} | |
54 | virtual Float_t Z() const {return fZ;} | |
55 | virtual Float_t Px() const {return fPx;} | |
56 | virtual Float_t Py() const {return fPy;} | |
57 | virtual Float_t Pz() const {return fPz;} | |
b915b099 | 58 | virtual Float_t P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz);} |
3142ebc3 | 59 | virtual Int_t UserId() const {return fUserId;} |
9ac3aec9 | 60 | virtual Int_t DetectorId() const {return fDetectorId;} |
7a36ccc5 | 61 | virtual void SetDetectorId(Int_t id){fDetectorId = id;} |
aab9c8d5 | 62 | virtual void SetPosition(Float_t x, Float_t y, Float_t z){fX=x; fY=y; fZ=z;} |
63 | virtual void SetMomentum(Float_t px, Float_t py, Float_t pz){fPx=px; fPy=py; fPz=pz;} | |
3142ebc3 | 64 | virtual void SetUserId(Int_t userId){fUserId=userId;} |
066cef28 | 65 | |
9c9d2487 | 66 | // Methods to get position of the track reference in |
67 | // in the TPC/TRD/TOF Tracking coordinate system | |
68 | ||
69 | virtual Float_t PhiPos() const {return TMath::Pi()+TMath::ATan2(-fY, -fX);} | |
70 | virtual Float_t Alpha() const | |
71 | {return TMath::Pi()*(20*((((Int_t)(PhiPos()*180/TMath::Pi()))/20))+10)/180.;} | |
72 | virtual Float_t LocalX() const {return fX*TMath::Cos(-Alpha()) - fY*TMath::Sin(-Alpha());} | |
73 | virtual Float_t LocalY() const {return fX*TMath::Sin(-Alpha()) + fY*TMath::Cos(-Alpha());} | |
74 | ||
e54ee89d | 75 | Bool_t IsSortable() const {return kTRUE;} |
76 | Int_t Compare(const TObject *obj) const { | |
77 | Int_t ll = ((AliTrackReference*)obj)->GetTrack(); | |
e54ee89d | 78 | if (ll < fTrack) return 1; |
79 | if (ll > fTrack) return -1; | |
a3a4f18d | 80 | return 0; |
e54ee89d | 81 | } |
2d74ba4f | 82 | |
65b311b3 | 83 | virtual void Print(Option_t* opt="") const; |
84 | ||
aab9c8d5 | 85 | protected: |
9ac3aec9 | 86 | Int_t fTrack; // Track number |
87 | Float_t fX; // X reference position of the track | |
88 | Float_t fY; // Y reference position of the track | |
89 | Float_t fZ; // Z reference position of the track | |
90 | Float_t fPx; // momentum | |
91 | Float_t fPy; // momentum | |
92 | Float_t fPz; // momentum | |
93 | Float_t fLength; // track lenght from its origin in cm | |
94 | Float_t fTime; // time of flight in cm | |
95 | Int_t fUserId; // optional Id defined by user | |
96 | Int_t fDetectorId; // Detector Id | |
97 | ClassDef(AliTrackReference,6) //Base class for all Alice track references | |
aab9c8d5 | 98 | }; |
99 | #endif |