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Fix for true centrality estimator with hijing npart (Alberica)
[u/mrichter/AliRoot.git] / TRD / AliTRDtrackV1.h
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1#ifndef ALITRDTRACKV1_H
2#define ALITRDTRACKV1_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// //
10// Represents a reconstructed TRD track //
11// //
12///////////////////////////////////////////////////////////////////////////////
13
14#ifndef ALIKALMANTRACK_H
15#include "AliKalmanTrack.h"
16#endif
17
18#ifndef ALITRDSEEDV1_H
19#include "AliTRDseedV1.h"
20#endif
21
22template <typename Value> class TVectorT;
23typedef class TVectorT<Double_t> TVectorD;
24class AliESDtrack;
25class AliTRDcluster;
26class AliTRDReconstructor;
27class AliTRDtrackV1 : public AliKalmanTrack
28{
29 friend class AliHLTTRDTrack; // allow HLT special access
30public:
31 enum ETRDtrackSize {
32 kNdet = AliTRDgeometry::kNdet
33 ,kNstacks = AliTRDgeometry::kNstack*AliTRDgeometry::kNsector
34 ,kNplane = AliTRDgeometry::kNlayer
35 ,kNcham = AliTRDgeometry::kNstack
36 ,kNsect = AliTRDgeometry::kNsector
37 ,kMAXCLUSTERSPERTRACK = 210
38 };
39
40 // bits from 0-13 are reserved by ROOT (see TObject.h)
41 enum ETRDtrackStatus {
42 kOwner = BIT(14)
43 ,kStopped = BIT(15)
44 ,kKink = BIT(16)
45 ,kPrimary = BIT(17)
46 ,kSeeder = BIT(18) // if set other than TPC (ITS, TRD)
47 };
48
49 // propagation/update error codes (up to 4 bits)
50 enum ETRDtrackError {
51 kProlongation = 1
52 ,kPropagation
53 ,kAdjustSector
54 ,kSnp
55 ,kTrackletInit
56 ,kUpdate
57 ,kUnknown = 0xff
58 };
59
60 // data/clusters/tracklet error codes (up to 4 bits/layer)
61 enum ETRDlayerError {
62 kGeometry = 1
63 ,kBoundary
64 ,kNoClusters
65 ,kNoAttach
66 ,kNoClustersTracklet
67 ,kNoFit
68 ,kChi2
69 };
70
71 AliTRDtrackV1();
72 AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15], Double_t x, Double_t alpha);
73 AliTRDtrackV1(const AliESDtrack &ref);
74 AliTRDtrackV1(const AliTRDtrackV1 &ref);
75 virtual ~AliTRDtrackV1();
76 AliTRDtrackV1 &operator=(const AliTRDtrackV1 &ref);
77 virtual void Copy(TObject &ref) const;
78 virtual TObject* Clone(const char* newname = "") const;
79 Bool_t CookPID();
80 Double_t CookTruncatedMean(const Bool_t kinvq, const Double_t mag, const Int_t charge, const Int_t kcalib, Int_t &nch, Int_t &ncls, TVectorD *Qs=NULL, TVectorD *Xs=NULL, Int_t timeBin0=-1, Int_t timeBin1=1000, Int_t tstep=1) const;
81
82 Int_t CookLabel(Float_t wrong, Int_t *labs=NULL, Float_t *freq=NULL);
83 AliTRDtrackV1* GetBackupTrack() const {return fBackupTrack;}
84 Double_t GetBudget(Int_t i) const { return fBudget[i];}
85 AliTRDcluster* GetCluster(Int_t id);
86 Int_t GetClusterIndex(Int_t id) const;
87 Float_t GetEdep() const {return fDE;}
88 Int_t GetESDid() const {return fESDid;}
89 inline Float_t GetMomentum(Int_t plane=-1) const;
90 inline Int_t GetNCross();
91 inline Int_t GetNumberOfTracklets() const;
92 Double_t GetPIDsignal() const { return 0.;}
93 Double_t GetPID(Int_t is) const { return (is >=0 && is < AliPID::kSPECIES) ? fPID[is] : -1.;}
94 UChar_t GetNumberOfTrackletsPID() const;
95 Int_t GetNumberOfPhysicsSlices() const { return fNdEdxSlices; };
96 Double_t GetPredictedChi2(const AliTRDseedV1 *tracklet, Double_t *cov) const;
97 Double_t GetPredictedChi2(const AliCluster* /*c*/) const { return 0.0; }
98 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z) const;
99 inline UChar_t GetStatusTRD(Int_t ly=-1) const;
100 Int_t GetSector() const;
101 AliTRDseedV1* GetTracklet(Int_t plane) const {return plane >=0 && plane <kNplane ? fTracklet[plane] : NULL;}
102 Int_t GetTrackletIndex(Int_t plane) const { return (plane>=0 && plane<kNplane) ? fTrackletIndex[plane] : -1;}
103 AliExternalTrackParam*
104 GetTrackIn() const { return fTrackLow;}
105 AliExternalTrackParam*
106 GetTrackOut() const { return fTrackHigh;}
107 const Int_t* GetTrackletIndexes() const { return &fTrackletIndex[0];}
108 Bool_t IsEqual(const TObject *inTrack) const;
109 Bool_t IsKink() const { return TestBit(kKink);}
110 Bool_t IsOwner() const { return TestBit(kOwner);};
111 Bool_t IsPrimary() const { return TestBit(kPrimary);};
112 Bool_t IsStopped() const { return TestBit(kStopped);};
113 Bool_t IsElectron() const;
114 Bool_t IsTPCseeded() const { return !TestBit(kSeeder);};
115 inline static Bool_t IsTrackError(ETRDtrackError error, UInt_t status);
116 inline static Bool_t IsLayerError(ETRDlayerError error, Int_t layer, UInt_t status);
117
118 Int_t MakeBackupTrack();
119 void Print(Option_t *o="") const;
120
121 Bool_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
122 Int_t PropagateToR(Double_t xr, Double_t step);
123 Bool_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
124 void SetBudget(Int_t i, Double_t b) {if(i>=0 && i<3) fBudget[i] = b;}
125 void SetEdep(Double32_t inDE){fDE = inDE;};
126 void SetESDid(Int_t id) {fESDid = id;}
127 void SetKink(Bool_t k) { SetBit(kKink, k);}
128 void SetPrimary(Bool_t k) { SetBit(kPrimary, k);}
129 void SetNonTPCseeded(Bool_t k){ SetBit(kSeeder, k);}
130 void SetNumberOfClusters();
131 void SetOwner();
132 void SetPID(Short_t is, Double_t inPID){if (is >=0 && is < AliPID::kSPECIES) fPID[is]=inPID;};
133 void SetPIDquality(UChar_t /*inPIDquality*/) const {/*fPIDquality = inPIDquality*/;};
134 inline void SetErrStat(UChar_t stat, Int_t ly=-1);
135 void SetStopped(Bool_t stop) {SetBit(kStopped, stop);}
136 void SetTracklet(AliTRDseedV1 *const trklt, Int_t index);
137 void SetTrackIn();
138 void SetTrackOut(const AliExternalTrackParam *op=NULL);
139 inline void SetReconstructor(const AliTRDReconstructor *rec);
140 inline Float_t StatusForTOF();
141 void UnsetTracklet(Int_t plane);
142 Bool_t Update(const AliCluster *, Double_t, Int_t) { return kFALSE; };
143 void UpdateChi2(Float_t chi2);
144 void UpdateESDtrack(AliESDtrack *t);
145
146private:
147 UInt_t fStatus; // Bit map for the status of propagation
148 Int_t fTrackletIndex[kNplane];// Tracklets index in the tracker list
149 Int_t fESDid; // ESD track id
150 Double32_t fPID[AliPID::kSPECIES]; // PID probabilities
151 Double32_t fBudget[3]; // Integrated material budget
152 Double32_t fDE; // Integrated delta energy
153 Double32_t fTruncatedMean; // Truncated mean
154 Int_t fNchamberdEdx; // number of chambers used in calculating truncated mean
155 Int_t fNclusterdEdx; // number of clusters used in calculating truncated mean
156 Int_t fNdEdxSlices; // number of "physics slices" fill via AliTRDPIDResponse
157
158 const AliTRDReconstructor *fkReconstructor;//! reconstructor link
159 AliTRDtrackV1 *fBackupTrack; //! Backup track
160 AliTRDseedV1 *fTracklet[kNplane]; // Tracklets array defining the track
161 AliExternalTrackParam *fTrackLow; // parameters of the track which enter TRD from below (TPC)
162 AliExternalTrackParam *fTrackHigh; // parameters of the track which enter TRD from above (HMPID, PHOS)
163
164 ClassDef(AliTRDtrackV1, 8) // TRD track - tracklet based
165};
166
167//____________________________________________________
168inline Float_t AliTRDtrackV1::GetMomentum(Int_t plane) const
169{
170// Return ESD momentum stored in the tracklet reconstructed in layer = "plane".
171// By default returns the ESD momentum in first tracklet attached to track
172 if(plane==-1){
173 for(Int_t i(0); i<kNplane; i++){
174 if(fTracklet[i]) return fTracklet[i]->GetMomentum();
175 }
176 } else if( plane >=0 && plane < kNplane){
177 if(fTracklet[plane]) return fTracklet[plane]->GetMomentum();
178 }
179 return -1.;
180}
181
182//____________________________________________________
183inline Int_t AliTRDtrackV1::GetNCross()
184{
185 Int_t ncross = 0;
186 for(Int_t ip=0; ip<kNplane; ip++){
187 if(!fTracklet[ip]) continue;
188 ncross += fTracklet[ip]->IsRowCross();
189 }
190 return ncross;
191}
192
193//____________________________________________________
194inline Int_t AliTRDtrackV1::GetNumberOfTracklets() const
195{
196 Int_t n = 0;
197 for(Int_t ip=0; ip<kNplane; ip++){
198 if(!fTracklet[ip]) continue;
199 n++;
200 }
201 return n;
202}
203
204//____________________________________________________
205inline UChar_t AliTRDtrackV1::GetStatusTRD(Int_t ly) const
206{
207 if(ly>=-1 && ly<kNplane) return (fStatus>>((ly+1)*4))&0xf;
208 return kUnknown;
209}
210
211//____________________________________________________
212inline Bool_t AliTRDtrackV1::IsTrackError(ETRDtrackError error, UInt_t status)
213{
214 return (status&0xf)==UChar_t(error);
215}
216
217//____________________________________________________
218inline Bool_t AliTRDtrackV1::IsLayerError(ETRDlayerError error, Int_t ly, UInt_t status)
219{
220 if(ly>=kNplane || ly<0) return kFALSE;
221 return ((status>>((ly+1)*4))&0xf) == UChar_t(error);
222}
223
224//____________________________________________________
225inline void AliTRDtrackV1::SetReconstructor(const AliTRDReconstructor *rec)
226{
227 for(Int_t ip=0; ip<kNplane; ip++){
228 if(!fTracklet[ip]) continue;
229 fTracklet[ip]->SetReconstructor(rec);
230 }
231 fkReconstructor = rec;
232}
233
234//____________________________________________________
235inline void AliTRDtrackV1::SetErrStat(UChar_t status, Int_t ly)
236{
237 if(ly<kNplane) fStatus|=((status&0xf)<<((ly+1)*4));
238 return;
239}
240
241
242//____________________________________________________________________________
243inline Float_t AliTRDtrackV1::StatusForTOF()
244{
245 // OBSOLETE
246 // Defines the status of the TOF extrapolation
247 //
248
249 if(!fTracklet[5]) return 0.;
250
251 // Definition of res ????
252 Float_t res = /*(0.2 + 0.8 * (fN / (fNExpected + 5.0))) **/ (0.4 + 0.6 * fTracklet[5]->GetN() / 20.0);
253 res *= (0.25 + 0.8 * 40.0 / (40.0 + fBudget[2]));
254 return res;
255}
256
257#endif
258
259
260