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Global re-calibration added, Nonlinearity _on_ by default
[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
22class AliESDtrack;
23class AliTRDcluster;
24class AliTRDReconstructor;
25class AliTRDtrackV1 : public AliKalmanTrack
26{
27 friend class AliHLTTRDTrack; // allow HLT special access
28public:
29 enum ETRDtrackSize {
30 kNdet = AliTRDgeometry::kNdet
31 ,kNstacks = AliTRDgeometry::kNstack*AliTRDgeometry::kNsector
32 ,kNplane = AliTRDgeometry::kNlayer
33 ,kNcham = AliTRDgeometry::kNstack
34 ,kNsect = AliTRDgeometry::kNsector
35 ,kNslice = 3
36 ,kNMLPslice = 8
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 };
47
48 // propagation/update error codes (up to 4 bits)
49 enum ETRDtrackError {
50 kProlongation = 1
51 ,kPropagation
52 ,kAdjustSector
53 ,kSnp
54 ,kTrackletInit
55 ,kUpdate
56 ,kUnknown = 0xff
57 };
58
59 // data/clusters/tracklet error codes (up to 4 bits/layer)
60 enum ETRDlayerError {
61 kGeometry = 1
62 ,kBoundary
63 ,kNoClusters
64 ,kNoAttach
65 ,kNoClustersTracklet
66 ,kNoFit
67 ,kChi2
68 };
69
70 AliTRDtrackV1();
71 AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15], Double_t x, Double_t alpha);
72 AliTRDtrackV1(const AliESDtrack &ref);
73 AliTRDtrackV1(const AliTRDtrackV1 &ref);
74 virtual ~AliTRDtrackV1();
75 AliTRDtrackV1 &operator=(const AliTRDtrackV1 &ref);
76 virtual void Copy(TObject &ref) const;
77
78 Bool_t CookPID();
79 Bool_t CookLabel(Float_t wrong);
80 AliTRDtrackV1* GetBackupTrack() const {return fBackupTrack;}
81 Double_t GetBudget(Int_t i) const { return fBudget[i];}
82 AliTRDcluster* GetCluster(Int_t id);
83 Int_t GetClusterIndex(Int_t id) const;
84 Float_t GetEdep() const {return fDE;}
85 Int_t GetESDid() const {return fESDid;}
86 inline Float_t GetMomentum(Int_t plane=-1) const;
87 inline Int_t GetNCross();
88 inline Int_t GetNumberOfTracklets() const;
89 Double_t GetPIDsignal() const { return 0.;}
90 Double_t GetPID(Int_t is) const { return (is >=0 && is < AliPID::kSPECIES) ? fPID[is] : -1.;}
91 UChar_t GetNumberOfTrackletsPID() const;
92 Double_t GetPredictedChi2(const AliTRDseedV1 *tracklet, Double_t *cov) const;
93 Double_t GetPredictedChi2(const AliCluster* /*c*/) const { return 0.0; }
94 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z) const;
95 inline UChar_t GetStatusTRD(Int_t ly=-1) const;
96 Int_t GetSector() const;
97 AliTRDseedV1* GetTracklet(Int_t plane) const {return plane >=0 && plane <kNplane ? fTracklet[plane] : NULL;}
98 Int_t GetTrackletIndex(Int_t plane) const { return (plane>=0 && plane<kNplane) ? fTrackletIndex[plane] : -1;}
99 AliExternalTrackParam*
100 GetTrackIn() const { return fTrackLow;}
101 AliExternalTrackParam*
102 GetTrackOut() const { return fTrackHigh;}
103 const Int_t* GetTrackletIndexes() const { return &fTrackletIndex[0];}
104
105 Bool_t IsEqual(const TObject *inTrack) const;
106 Bool_t IsKink() const { return TestBit(kKink);}
107 Bool_t IsOwner() const { return TestBit(kOwner);};
108 Bool_t IsPrimary() const { return TestBit(kPrimary);};
109 Bool_t IsStopped() const { return TestBit(kStopped);};
110 Bool_t IsElectron() const;
111 inline static Bool_t IsTrackError(ETRDtrackError error, UInt_t status);
112 inline static Bool_t IsLayerError(ETRDlayerError error, Int_t layer, UInt_t status);
113
114 Int_t MakeBackupTrack();
115 void Print(Option_t *o="") const;
116
117 Bool_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
118 Int_t PropagateToR(Double_t xr, Double_t step);
119 Bool_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
120 void SetBudget(Int_t i, Double_t b) {if(i>=0 && i<3) fBudget[i] = b;}
121 void SetEdep(Double32_t inDE){fDE = inDE;};
122 void SetESDid(Int_t id) {fESDid = id;}
123 void SetKink(Bool_t k) { SetBit(kKink, k);}
124 void SetPrimary(Bool_t k) { SetBit(kPrimary, k);}
125 void SetNumberOfClusters();
126 void SetOwner();
127 void SetPID(Short_t is, Double_t inPID){if (is >=0 && is < AliPID::kSPECIES) fPID[is]=inPID;};
128 void SetPIDquality(UChar_t /*inPIDquality*/) const {/*fPIDquality = inPIDquality*/;};
129 inline void SetStatus(UChar_t stat, Int_t ly=-1);
130 void SetStopped(Bool_t stop) {SetBit(kStopped, stop);}
131 void SetTracklet(AliTRDseedV1 *const trklt, Int_t index);
132 void SetTrackIn();
133 void SetTrackOut(const AliExternalTrackParam *op=NULL);
134 inline void SetReconstructor(const AliTRDReconstructor *rec);
135 inline Float_t StatusForTOF();
136 void UnsetTracklet(Int_t plane);
137 Bool_t Update(const AliCluster *, Double_t, Int_t) { return kFALSE; };
138 void UpdateChi2(Float_t chi2);
139 void UpdateESDtrack(AliESDtrack *t);
140
141private:
142 UInt_t fStatus; // Bit map for the status of propagation
143 Int_t fTrackletIndex[kNplane];// Tracklets index in the tracker list
144 Int_t fESDid; // ESD track id
145 Double32_t fPID[AliPID::kSPECIES]; // PID probabilities
146 Double32_t fBudget[3]; // Integrated material budget
147 Double32_t fDE; // Integrated delta energy
148 const AliTRDReconstructor *fkReconstructor;//! reconstructor link
149 AliTRDtrackV1 *fBackupTrack; //! Backup track
150 AliTRDseedV1 *fTracklet[kNplane]; // Tracklets array defining the track
151 AliExternalTrackParam *fTrackLow; // parameters of the track which enter TRD from below (TPC)
152 AliExternalTrackParam *fTrackHigh; // parameters of the track which enter TRD from above (HMPID, PHOS)
153
154 ClassDef(AliTRDtrackV1, 7) // TRD track - tracklet based
155};
156
157//____________________________________________________
158inline Float_t AliTRDtrackV1::GetMomentum(Int_t plane) const
159{
160// Return ESD momentum stored in the tracklet reconstructed in layer = "plane".
161// By default returns the ESD momentum in first tracklet attached to track
162 if(plane==-1){
163 for(Int_t i(0); i<kNplane; i++){
164 if(fTracklet[i]) return fTracklet[i]->GetMomentum();
165 }
166 } else if( plane >=0 && plane < kNplane){
167 if(fTracklet[plane]) return fTracklet[plane]->GetMomentum();
168 }
169 return -1.;
170}
171
172//____________________________________________________
173inline Int_t AliTRDtrackV1::GetNCross()
174{
175 Int_t ncross = 0;
176 for(Int_t ip=0; ip<kNplane; ip++){
177 if(!fTracklet[ip]) continue;
178 ncross += fTracklet[ip]->IsRowCross();
179 }
180 return ncross;
181}
182
183//____________________________________________________
184inline Int_t AliTRDtrackV1::GetNumberOfTracklets() const
185{
186 Int_t n = 0;
187 for(Int_t ip=0; ip<kNplane; ip++){
188 if(!fTracklet[ip]) continue;
189 n++;
190 }
191 return n;
192}
193
194//____________________________________________________
195inline UChar_t AliTRDtrackV1::GetStatusTRD(Int_t ly) const
196{
197 if(ly>=-1 && ly<kNplane) return (fStatus>>((ly+1)*4))&0xf;
198 return kUnknown;
199}
200
201//____________________________________________________
202inline Bool_t AliTRDtrackV1::IsTrackError(ETRDtrackError error, UInt_t status)
203{
204 return (status&0xf)==UChar_t(error);
205}
206
207//____________________________________________________
208inline Bool_t AliTRDtrackV1::IsLayerError(ETRDlayerError error, Int_t ly, UInt_t status)
209{
210 if(ly>=kNplane || ly<0) return kFALSE;
211 return ((status>>((ly+1)*4))&0xf) == UChar_t(error);
212}
213
214//____________________________________________________
215inline void AliTRDtrackV1::SetReconstructor(const AliTRDReconstructor *rec)
216{
217 for(Int_t ip=0; ip<kNplane; ip++){
218 if(!fTracklet[ip]) continue;
219 fTracklet[ip]->SetReconstructor(rec);
220 }
221 fkReconstructor = rec;
222}
223
224//____________________________________________________
225inline void AliTRDtrackV1::SetStatus(UChar_t status, Int_t ly)
226{
227 if(ly<kNplane) fStatus|=((status&0xf)<<((ly+1)*4));
228 return;
229}
230
231
232//____________________________________________________________________________
233inline Float_t AliTRDtrackV1::StatusForTOF()
234{
235 // OBSOLETE
236 // Defines the status of the TOF extrapolation
237 //
238
239 if(!fTracklet[5]) return 0.;
240
241 // Definition of res ????
242 Float_t res = /*(0.2 + 0.8 * (fN / (fNExpected + 5.0))) **/ (0.4 + 0.6 * fTracklet[5]->GetN() / 20.0);
243 res *= (0.25 + 0.8 * 40.0 / (40.0 + fBudget[2]));
244 return res;
245}
246
247#endif
248
249
250