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Move to fixed size step manager as default
[u/mrichter/AliRoot.git] / TRD / AliTRDtrack.h
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46d29e70 1#ifndef ALITRDTRACK_H
b3a5a838 2#define ALITRDTRACK_H
46d29e70 3
4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
b3a5a838 5 * See cxx source for full Copyright notice */
46d29e70 6
15ed8ba1 7/* $Id$ */
46d29e70 8
53c17fbf 9///////////////////////////////////////////////////////////////////////////////
10// //
11// Represents a reconstructed TRD track //
12// //
13///////////////////////////////////////////////////////////////////////////////
46d29e70 14
15ed8ba1 15#include "AliKalmanTrack.h"
16
17#include "AliTRDtracklet.h"
18
19class AliESDtrack;
20class AliTrackReference;
21class AliTPCtrack;
22
23class AliTRDcluster;
24
25const unsigned kMAXCLUSTERSPERTRACK = 210;
26
7ad19338 27class AliTRDtrack : public AliKalmanTrack {
53c17fbf 28
6d45eaef 29 enum { kNdet = 540
15ed8ba1 30 , kNstacks = 90
31 , kNplane = 6
32 , kNcham = 5
33 , kNsect = 18
34 , kNslice = 3
35 , kNtimeBins = 22 };
7ad19338 36
7ad19338 37 friend class AliTRDtracker;
46d29e70 38
53c17fbf 39 public:
40
f146da82 41 AliTRDtrack();
15ed8ba1 42 AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5]
43 , const Double_t cc[15], Double_t xr, Double_t alpha);
44 AliTRDtrack(const AliTRDtrack &t);
45 AliTRDtrack(const AliKalmanTrack &t, Double_t alpha);
46 AliTRDtrack(const AliESDtrack &t);
47 virtual ~AliTRDtrack();
48 AliTRDtrack &operator=(const AliTRDtrack &t);
49
50 Int_t Compare(const TObject *o) const;
51 void CookdEdx(Double_t low = 0.05, Double_t up = 0.7);
52 Float_t StatusForTOF();
53
54 Double_t GetAlpha() const { return fAlpha; }
55 Int_t GetSector() const;
56 Double_t GetC() const { return fC; }
57 Int_t GetClusterIndex(Int_t i) const { return fIndex[i]; }
58 Float_t GetClusterdQdl(Int_t i) const { return fdQdl[i]; }
59 void GetCovariance(Double_t cov[15]) const;
60 Double_t GetdEdx() const { return fdEdx; }
61 Double_t GetPIDsignal() const { return GetdEdx(); }
62 Float_t GetPIDsignals(Int_t iPlane, Int_t iSlice) const
6d45eaef 63 { return fdEdxPlane[iPlane][iSlice]; }
15ed8ba1 64 Int_t GetPIDTimBin(Int_t i) const { return fTimBinPlane[i]; }
65 Double_t GetEta() const { return fE; }
66 void GetExternalCovariance(Double_t cov[15]) const;
67 void GetExternalParameters(Double_t &xr, Double_t x[5]) const;
68 Double_t GetLikelihoodElectron() const { return fLhElectron; }
69 Double_t Get1Pt() const;
70 Double_t GetP() const;
71 Double_t GetPredictedChi2(const AliTRDcluster *c, Double_t h01) const;
72 Double_t GetPt() const { return 1.0 / Get1Pt(); }
73 void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const;
74 void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const;
75 Int_t GetSeedLabel() const { return fSeedLab; }
76 Double_t GetSigmaC2() const { return fCcc; }
77 Double_t GetSigmaTgl2() const { return fCtt; }
78 Double_t GetSigmaY2() const { return fCyy; }
79 Double_t GetSigmaZ2() const { return fCzz; }
80 Double_t GetSnp() const { return fX * fC - fE; }
81 Double_t GetTgl() const { return fT; }
82 Double_t GetX() const { return fX; }
83 Double_t GetY() const { return fY; }
84 Double_t GetZ() const { return fZ; }
85 Int_t *GetBackupIndexes() { return fIndexBackup; }
86 Int_t *GetIndexes() { return fIndex; }
87 Double_t GetYat(Double_t xk) const;
88 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
89 Int_t GetNWrong() const { return fNWrong; }
90 Int_t GetNRotate() const { return fNRotate; }
91 Int_t GetNCross() const { return fNCross; }
92 Bool_t GetStop() const { return fStopped; }
93
94 void SetdEdx(Float_t dedx) { fdEdx = dedx; }
95 void SetPIDsignals(Float_t dedx, Int_t iPlane, Int_t iSlice)
6d45eaef 96 { fdEdxPlane[iPlane][iSlice] = dedx; }
15ed8ba1 97 void SetPIDTimBin(Int_t timbin, Int_t i) { fTimBinPlane[i] = timbin; }
98 void SetLikelihoodElectron(Float_t l) { fLhElectron = l; }
99 void SetSampledEdx(Float_t q, Int_t i);
100 void SetSampledEdx(Float_t q);
101 void SetSeedLabel(Int_t lab) { fSeedLab = lab; }
102 void SetStop(Bool_t stop) { fStopped = stop; }
103
104 Int_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
105 Int_t PropagateToX(Double_t xr, Double_t step);
106 Int_t PropagateToR(Double_t xr, Double_t step);
107 void ResetCovariance();
108 void ResetCovariance(Float_t mult);
d49e463b 109 void ResetClusters() { SetChi2(0.0);
15ed8ba1 110 SetNumberOfClusters(0); }
111 Int_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
112 Int_t Update(const AliTRDcluster *c, Double_t chi2, UInt_t i, Double_t h01);
113 Int_t UpdateMI(const AliTRDcluster *c, Double_t chi2, UInt_t i, Double_t h01, Int_t plane);
114 Int_t UpdateMI(const AliTRDtracklet &tracklet);
115 void AddNWrong() { fNWrong++; }
116 void IncCross() { fNCross++;
117 if (fBackupTrack)
118 fBackupTrack->IncCross(); }
119 AliTRDtrack *GetBackupTrack() { return fBackupTrack; }
120 void MakeBackupTrack();
53c17fbf 121
122 protected:
123
15ed8ba1 124 inline void GetXYZ(Float_t r[3]) const;
125 Double_t GetPredictedChi2(const AliCluster*/*c*/) const { return 0.0; }
126 Int_t Update(const AliCluster*/*c*/, Double_t /*chi2*/, UInt_t /*i*/) { return 0; }
127
128 Int_t fSeedLab; // Track label taken from seeding
d49e463b 129 Float_t fdEdx; // dE/dx - truncated mean
15ed8ba1 130 Float_t fDE; // Integrated delta energy
131 Float_t fdEdxPlane[kNplane][kNslice]; // dE/dx from all 6 planes in 3 slices each
132 Int_t fTimBinPlane[kNplane]; // Time bin of Max cluster from all 6 planes
133
134 Double_t fAlpha; // Rotation angle
135 Double_t fX; // Running local X-coordinate of the track (time bin)
136 Bool_t fStopped; // Track stop indication
137
138 Double_t fY; // Y-coordinate of the track
139 Double_t fZ; // Z-coordinate of the track
140 Double_t fE; // C*x0
141 Double_t fT; // Tangent of the track momentum dip angle
142 Double_t fC; // Track curvature
143
144 Double_t fCyy; // Covariance
145 Double_t fCzy, fCzz; // matrix
146 Double_t fCey, fCez, fCee; // of the
147 Double_t fCty, fCtz, fCte, fCtt; // track
148 Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters
b8dc2353 149
15ed8ba1 150 Int_t fIndex[kMAXCLUSTERSPERTRACK]; // Global indexes of clusters
151 Int_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // Backup indexes of clusters - used in iterations
152 Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // Cluster amplitudes corrected for track angles
b8dc2353 153
15ed8ba1 154 Float_t fLhElectron; // Likelihood to be an electron
155 Int_t fNWrong; // Number of wrong clusters
156 Int_t fNRotate; // Number of rotation
157 Int_t fNCross; // Number of the cross materials
158 Int_t fNExpected; // Expected number of cluster
159 Int_t fNLast; // Number of clusters in last 2 layers
160 Int_t fNExpectedLast; // Number of expected clusters on last 2 layers
161 Int_t fNdedx; // Number of clusters for dEdx measurment
162 Float_t fChi2Last; // Chi2 in the last 2 layers
163 AliTRDtracklet fTracklets[6]; // Tracklets
164 Float_t fBudget[3]; // Integrated material budget
165 AliTRDtrack *fBackupTrack; //! Backup track
166
d49e463b 167 ClassDef(AliTRDtrack,6) // TRD reconstructed tracks
46d29e70 168
53c17fbf 169};
46d29e70 170
15ed8ba1 171//_____________________________________________________________________________
172inline void AliTRDtrack::GetExternalParameters(Double_t &xr, Double_t x[5]) const
5773defd 173{
174 //
175 // This function returns external TRD track representation
176 //
15ed8ba1 177
5773defd 178 xr = fX;
15ed8ba1 179 x[0] = GetY();
180 x[1] = GetZ();
181 x[2] = GetSnp();
182 x[3] = GetTgl();
d49e463b 183 x[4] = (TMath::Sign(1.0e-9,fC) + fC) * GetLocalConvConst();
15ed8ba1 184
5773defd 185}
186
46d29e70 187#endif