Jochen Thaeder: Online Display of Heidelberg tracking ws Jan07
[u/mrichter/AliRoot.git] / STEER / AliAODTrack.h
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df9db588 1#ifndef AliAODTrack_H
2#define AliAODTrack_H
3/* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8//-------------------------------------------------------------------------
9// AOD track base class
10// Author: Markus Oldenburg, CERN
11//-------------------------------------------------------------------------
12
13#include <TRef.h>
14
15#include "AliVirtualParticle.h"
16#include "AliAODVertex.h"
5d62ce04 17#include "AliAODRedCov.h"
df9db588 18
19class AliAODTrack : public AliVirtualParticle {
20
21 public:
22
23 enum AODTrk_t {kUndef=-1, kPrimary, kSecondary, kOrphan};
24
25 enum AODTrkBits_t {
26 kIsDCA=BIT(14) // set if fPosition is the DCA and not the position of the first point
27 };
28
29 enum AODTrkPID_t {
30 kUnknown=0, kElectron, kMuon, kPion, kProton, kDeuton, kTriton, kAlpha, kOther};
31
32 AliAODTrack();
33 AliAODTrack(Int_t id,
34 Int_t label,
35 Double_t p[3],
36 Bool_t cartesian,
37 Double_t x[3],
38 Bool_t dca,
39 Double_t covMatrix[21],
40 Short_t q,
41 UChar_t itsClusMap,
42 Double_t pid[10],
43 AliAODVertex *prodVertex,
44 AODTrk_t ttype=kUndef);
45
46 AliAODTrack(Int_t id,
47 Int_t label,
48 Float_t p[3],
49 Bool_t cartesian,
50 Float_t x[3],
51 Bool_t dca,
52 Float_t covMatrix[21],
53 Short_t q,
54 UChar_t itsClusMap,
55 Float_t pid[10],
56 AliAODVertex *prodVertex,
57 AODTrk_t ttype=kUndef);
58
59 virtual ~AliAODTrack();
60 AliAODTrack(const AliAODTrack& trk);
61 AliAODTrack& operator=(const AliAODTrack& trk);
62
63 // kinematics
64 virtual Double_t OneOverPt() const { return fMomentum[0]; }
65 virtual Double_t Phi() const { return fMomentum[1]; }
66 virtual Double_t Theta() const { return fMomentum[2]; }
67
68 virtual Double_t Px() const { return TMath::Cos(fMomentum[1])/fMomentum[0]; }
69 virtual Double_t Py() const { return TMath::Sin(fMomentum[1])/fMomentum[0]; }
70 virtual Double_t Pz() const { return 1./(fMomentum[0] * TMath::Tan(fMomentum[2])); }
71 virtual Double_t Pt() const { return 1./fMomentum[0]; }
72 virtual Double_t P() const { return TMath::Sqrt(Pt()*Pt()+Pz()*Pz()); }
73
74 Double_t Chi2() const { return fChi2; }
75
76 virtual Double_t E() const { return -999.; }
77 // make a connection to the PID object, here!!!
78 virtual Double_t M() const { return -999.; }
79
80 virtual Double_t Eta() const { return -TMath::Log(TMath::Tan(0.5 * fMomentum[2])); }
81 // make a connection to the PID object, here!!!
82 virtual Double_t Y() const { return -999.; }
83
84 virtual Short_t Charge() const {return fCharge; }
85
86 // PID
87 virtual const Double_t *PID() const { return fPID; }
88
89 template <class T> void GetPID(T *pid) const {
90 for(Int_t i=0; i<10; ++i) pid[i]=fPID[i];}
91
92 template <class T> void SetPID(const T *pid) {
93 if(pid) for(Int_t i=0; i<10; ++i) fPID[i]=pid[i];
94 else {for(Int_t i=1; i<10; fPID[i++]=0); fPID[0]=1.;}}
95
96 Int_t GetID() const { return fID; }
97 Int_t GetLabel() const { return fLabel; }
98 Char_t GetType() const { return fType;}
99
100 template <class T> void GetP(T *p) const {
101 p[0]=fMomentum[0]; p[1]=fMomentum[1]; p[2]=fMomentum[2];}
102
103 template <class T> void GetPxPyPz(T *p) const {
104 p[0] = Px(); p[1] = Py(); p[2] = Pz();}
105
106 template <class T> Bool_t GetPosition(T *x) const {
107 x[0]=fPosition[0]; x[1]=fPosition[1]; x[2]=fPosition[2];
108 return TestBit(kIsDCA);}
109
110 template <class T> void SetCovMatrix(const T *covMatrix) {
5d62ce04 111 if(!fCovMatrix) fCovMatrix=new AliAODRedCov<6>();
df9db588 112 fCovMatrix->SetCovMatrix(covMatrix);}
113
114 template <class T> Bool_t GetCovMatrix(T *covMatrix) const {
115 if(!fCovMatrix) return kFALSE;
116 fCovMatrix->GetCovMatrix(covMatrix); return kTRUE;}
117
118 void RemoveCovMatrix() {delete fCovMatrix; fCovMatrix=NULL;}
119
120 UChar_t GetITSClusterMap() const { return fITSClusterMap; }
121
122 AliAODVertex *GetProdVertex() const { return (AliAODVertex*)fProdVertex.GetObject(); }
123
124 // print
125 void Print(const Option_t *opt = "") const;
126
127 // setters
128 void SetID(const Int_t id) { fID = id; }
129 void SetLabel(const Int_t label) {fLabel = label; }
130
131 template <class T> void SetPosition(const T *x, const Bool_t isDCA = kFALSE);
132 void SetDCA(Double_t d, Double_t z);
133
134 void SetOneOverPt(const Double_t oneOverPt) { fMomentum[0] = oneOverPt; }
135 void SetPt(const Double_t pt) { fMomentum[0] = 1./pt; };
136 void SetPhi(const Double_t phi) { fMomentum[1] = phi; }
137 void SetTheta(const Double_t theta) { fMomentum[2] = theta; }
138 template <class T> void SetP(const T *p, const Bool_t cartesian = kTRUE);
139 void SetP() {fMomentum[0]=fMomentum[1]=fMomentum[2]=-999.;}
140
141 void SetCharge(const Short_t q) { fCharge = q; }
142 void SetChi2(const Double_t chi2) { fChi2 = chi2; }
143
144 void SetITSClusterMap(const UChar_t itsClusMap) { fITSClusterMap = itsClusMap; }
145
146 void SetProdVertex(TObject *vertex) { fProdVertex = vertex; }
147
148 // name and title
149 void SetType(AODTrk_t ttype) { fType=ttype; }
150
df9db588 151 private :
152
153 // Momentum & position
154 Double32_t fMomentum[3]; // momemtum stored in 1/pt, phi, theta
155 Double32_t fPosition[3]; // position of first point on track or dca
156
157 Double32_t fPID[10]; // [0.,1.,8] pointer to PID object
158 Double32_t fChi2; // chi2 of mometum fit
159
160 Int_t fID; // unique track ID, points back to the ESD track
161 Int_t fLabel; // track label, points back to MC track
162
5d62ce04 163 AliAODRedCov<6> *fCovMatrix; // covariance matrix (x, y, z, px, py, pz)
df9db588 164 TRef fProdVertex; // vertex of origin
165
166 Char_t fCharge; // particle charge
167 UChar_t fITSClusterMap; // map of ITS cluster, one bit per layer
d20542b6 168 Char_t fType; // Track Type
df9db588 169
170
171 ClassDef(AliAODTrack,1);
172};
173
174#endif