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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 | 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 | }; | |
34 | AliTrackReference(); | |
35 | AliTrackReference(Int_t label, Int_t id = -999); | |
36 | AliTrackReference(const AliTrackReference &tr); | |
37 | virtual ~AliTrackReference() {} | |
38 | ||
39 | // static AliExternalTrackParam * MakeTrack(const AliTrackReference *ref, Double_t mass); | |
40 | virtual Int_t GetTrack() const {return fTrack;} | |
41 | virtual void SetTrack(Int_t track) {fTrack=track;} | |
42 | virtual void SetLength(Float_t length){fLength=length;} | |
43 | virtual void SetTime(Float_t time) {fTime = time;} | |
44 | virtual Float_t GetLength() const {return fLength;} | |
45 | virtual Float_t GetTime() const {return fTime;} | |
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);} | |
51 | virtual Float_t Theta() const {return (fPz==0)?TMath::Pi()/2:TMath::ACos(fPz/P());} | |
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;} | |
58 | virtual Float_t P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz);} | |
59 | virtual Int_t UserId() const {return fUserId;} | |
60 | virtual Int_t DetectorId() const {return fDetectorId;} | |
61 | virtual void SetDetectorId(Int_t id){fDetectorId = id;} | |
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;} | |
64 | virtual void SetUserId(Int_t userId){fUserId=userId;} | |
65 | ||
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 | ||
75 | Bool_t IsSortable() const {return kTRUE;} | |
76 | Int_t Compare(const TObject *obj) const { | |
77 | Int_t ll = ((AliTrackReference*)obj)->GetTrack(); | |
78 | if (ll < fTrack) return 1; | |
79 | if (ll > fTrack) return -1; | |
80 | return 0; | |
81 | } | |
82 | ||
83 | virtual void Print(Option_t* opt="") const; | |
84 | ||
85 | protected: | |
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 | |
98 | }; | |
99 | #endif |