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