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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 | #include "TObject.h" | |
9 | #include "TMath.h" | |
10 | ||
11 | class AliTrackReference : public TObject { | |
12 | ||
13 | public: | |
14 | ||
15 | AliTrackReference(); | |
16 | AliTrackReference(Int_t label); | |
17 | virtual ~AliTrackReference() {} | |
18 | ||
19 | virtual Int_t GetTrack() const {return fTrack;} | |
20 | virtual void SetTrack(Int_t track) {fTrack=track;} | |
21 | virtual void SetLength(Float_t length){fLength=length;} | |
22 | virtual void SetTime(Float_t time) {fTime = time;} | |
23 | virtual Float_t GetLength() const {return fLength;} | |
24 | virtual Float_t GetTime() const {return fTime;} | |
25 | virtual Int_t Label() const {return fTrack;} | |
26 | virtual void SetLabel(Int_t track) {fTrack=track;} | |
27 | virtual Float_t R() const {return TMath::Sqrt(fX*fX+fY*fY);} | |
28 | virtual Float_t Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);} | |
29 | virtual Float_t Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx);} | |
30 | virtual Float_t Theta() const {return (fPz==0)?TMath::Pi()/2:TMath::ACos(fPz/P());} | |
31 | virtual Float_t X() const {return fX;} | |
32 | virtual Float_t Y() const {return fY;} | |
33 | virtual Float_t Z() const {return fZ;} | |
34 | virtual Float_t Px() const {return fPx;} | |
35 | virtual Float_t Py() const {return fPy;} | |
36 | virtual Float_t Pz() const {return fPz;} | |
37 | virtual Float_t P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz);} | |
38 | virtual void SetPosition(Float_t x, Float_t y, Float_t z){fX=x; fY=y; fZ=z;} | |
39 | virtual void SetMomentum(Float_t px, Float_t py, Float_t pz){fPx=px; fPy=py; fPz=pz;} | |
40 | ||
41 | // Methods to get position of the track reference in | |
42 | // in the TPC/TRD/TOF Tracking coordinate system | |
43 | ||
44 | virtual Float_t PhiPos() const {return TMath::Pi()+TMath::ATan2(-fY, -fX);} | |
45 | virtual Float_t Alpha() const | |
46 | {return TMath::Pi()*(20*((((Int_t)(PhiPos()*180/TMath::Pi()))/20))+10)/180.;} | |
47 | virtual Float_t LocalX() const {return fX*TMath::Cos(-Alpha()) - fY*TMath::Sin(-Alpha());} | |
48 | virtual Float_t LocalY() const {return fX*TMath::Sin(-Alpha()) + fY*TMath::Cos(-Alpha());} | |
49 | ||
50 | ||
51 | protected: | |
52 | Int_t fTrack; // Track number | |
53 | Float_t fX; // X reference position of the track | |
54 | Float_t fY; // Y reference position of the track | |
55 | Float_t fZ; // Z reference position of the track | |
56 | Float_t fPx; // momentum | |
57 | Float_t fPy; // momentum | |
58 | Float_t fPz; // momentum | |
59 | Float_t fLength; // track lenght from its origin in cm | |
60 | Float_t fTime; // time of flight in cm | |
61 | ||
62 | ClassDef(AliTrackReference,3) //Base class for all Alice track references | |
63 | }; | |
64 | #endif |