more constant functions and parameters
[u/mrichter/AliRoot.git] / TRD / AliTRDtrackV1.h
CommitLineData
d9950a5a 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
0906e73e 8///////////////////////////////////////////////////////////////////////////////
9// //
10// Represents a reconstructed TRD track //
11// //
12///////////////////////////////////////////////////////////////////////////////
d9950a5a 13
4d6aee34 14//#ifndef ALIKALMANTRACK_H
3b57a3f7 15#include "AliKalmanTrack.h"
4d6aee34 16//#endif
3b57a3f7 17
4d6aee34 18//#ifndef ALITRDSEEDV1_H
3b57a3f7 19#include "AliTRDseedV1.h"
4d6aee34 20//#endif
d9950a5a 21
3b57a3f7 22class AliTRDcluster;
23class AliESDtrack;
181c7f7e 24class AliTRDReconstructor;
3b57a3f7 25class AliTRDtrackV1 : public AliKalmanTrack
d9950a5a 26{
3044dfe5 27 friend class AliHLTTRDTrack;
3b57a3f7 28public:
eb2b4f91 29 enum ETRDtrackSize {
e3cf3d02 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 };
3b57a3f7 39
2e2915e7 40 // bits from 0-13 are reserved by ROOT (see TObject.h)
eb2b4f91 41 enum ETRDtrackStatus {
42 kOwner = BIT(14)
43 ,kStopped = BIT(15)
44 ,kKink = BIT(16)
45 };
46
47 // propagation/update error codes (up to 4 bits)
48 enum ETRDtrackError {
49 kProlongation = 1
50 ,kPropagation
51 ,kAdjustSector
52 ,kSnp
53 ,kTrackletInit
54 ,kUpdate
af4e990c 55 ,kUnknown = 0xff
eb2b4f91 56 };
57
58 // data/clusters/tracklet error codes (up to 4 bits/layer)
59 enum ETRDlayerError {
60 kGeometry = 1
61 ,kBoundary
62 ,kNoClusters
63 ,kNoAttach
64 ,kNoClustersTracklet
65 ,kNoFit
66 ,kChi2
e44586fb 67 };
0906e73e 68
3b57a3f7 69 AliTRDtrackV1();
e17f4785 70 AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15], Double_t x, Double_t alpha);
3b57a3f7 71 AliTRDtrackV1(const AliESDtrack &ref);
72 AliTRDtrackV1(const AliTRDtrackV1 &ref);
73 virtual ~AliTRDtrackV1();
74 AliTRDtrackV1 &operator=(const AliTRDtrackV1 &ref) { *(new(this) AliTRDtrackV1(ref)); return *this; }
75
76 Bool_t CookPID();
77 Bool_t CookLabel(Float_t wrong);
78 AliTRDtrackV1* GetBackupTrack() const {return fBackupTrack;}
79 Double_t GetBudget(Int_t i) const { return fBudget[i];}
0349cc67 80 AliTRDcluster* GetCluster(Int_t id);
3b57a3f7 81 Int_t GetClusterIndex(Int_t id) const;
82 Float_t GetEdep() const {return fDE;}
352cef8f 83 Int_t GetESDid() const {return fESDid;}
3b57a3f7 84 inline Float_t GetMomentum(Int_t plane) const;
85 inline Int_t GetNCross();
82180ec1 86 inline Int_t GetNumberOfTracklets() const;
1128e139 87 Double_t GetPIDsignal() const { return 0.;}
3b57a3f7 88 Double_t GetPID(Int_t is) const { return (is >=0 && is < AliPID::kSPECIES) ? fPID[is] : -1.;}
eb2b4f91 89 UChar_t GetNumberOfTrackletsPID() const;
b72f4eaf 90 Double_t GetPredictedChi2(const AliTRDseedV1 *tracklet, Double_t *cov) const;
3b57a3f7 91 Double_t GetPredictedChi2(const AliCluster* /*c*/) const { return 0.0; }
92 Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
eb2b4f91 93 inline UChar_t GetStatusTRD(Int_t ly=-1) const;
94 Int_t GetSector() const;
4d6aee34 95 AliTRDseedV1* GetTracklet(Int_t plane) const {return plane >=0 && plane <kNplane ? fTracklet[plane] : NULL;}
e3cf3d02 96 Int_t GetTrackletIndex(Int_t plane) const { return (plane>=0 && plane<kNplane) ? fTrackletIndex[plane] : -1;}
97 AliExternalTrackParam*
98 GetTrackLow() const { return fTrackLow;}
99 AliExternalTrackParam*
100 GetTrackHigh() const { return fTrackHigh;}
17896e82 101 const Int_t* GetTrackletIndexes() const { return &fTrackletIndex[0];}
3b57a3f7 102
203967fc 103 Bool_t IsEqual(const TObject *inTrack) const;
f29f13a6 104 Bool_t IsKink() const { return TestBit(kKink);}
105 Bool_t IsOwner() const { return TestBit(kOwner);};
106 Bool_t IsStopped() const { return TestBit(kStopped);};
22a4ab0c 107 Bool_t IsElectron() const;
eb2b4f91 108 inline static Bool_t IsTrackError(ETRDtrackError error, UInt_t status);
109 inline static Bool_t IsLayerError(ETRDlayerError error, Int_t layer, UInt_t status);
110
b453ef55 111 Int_t MakeBackupTrack();
203967fc 112 void Print(Option_t *o="") const;
113
3b57a3f7 114 Bool_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
115 Int_t PropagateToR(Double_t xr, Double_t step);
116 Bool_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
117 void SetBudget(Int_t i, Double_t b) {if(i>=0 && i<3) fBudget[i] = b;}
bee2b41e 118 void SetEdep(Double32_t inDE){fDE = inDE;};
352cef8f 119 void SetESDid(Int_t id) {fESDid = id;}
f29f13a6 120 void SetKink(Bool_t k) { SetBit(kKink, k);}
3b57a3f7 121 void SetNumberOfClusters();
eb2b4f91 122 UChar_t SetNumberOfTrackletsPID(Bool_t recalc);
3b57a3f7 123 void SetOwner();
bee2b41e 124 void SetPID(Short_t is, Double_t inPID){if (is >=0 && is < AliPID::kSPECIES) fPID[is]=inPID;};
4d6aee34 125 void SetPIDquality(UChar_t /*inPIDquality*/) const {/*fPIDquality = inPIDquality*/;};
eb2b4f91 126 inline void SetStatus(UChar_t stat, Int_t ly=-1);
e44586fb 127 void SetStopped(Bool_t stop) {SetBit(kStopped, stop);}
4d6aee34 128 void SetTracklet(AliTRDseedV1 *const trklt, Int_t index);
e3cf3d02 129 void SetTrackLow();
4d6aee34 130 void SetTrackHigh(const AliExternalTrackParam *op=NULL);
181c7f7e 131 inline void SetReconstructor(const AliTRDReconstructor *rec);
3b57a3f7 132 inline Float_t StatusForTOF();
181d2c97 133 void UnsetTracklet(Int_t plane);
b06a50a5 134 Bool_t Update(Double_t *p, Double_t *cov, Double_t chi2, Bool_t useTRD=kTRUE);
4d6aee34 135 Bool_t Update(const AliCluster *, Double_t, Int_t) { return kFALSE; };
3b57a3f7 136 void UpdateESDtrack(AliESDtrack *t);
3b57a3f7 137
138private:
eb2b4f91 139 UInt_t fStatus; // Bit map for the status of propagation
17896e82 140 Int_t fTrackletIndex[kNplane];// Tracklets index in the tracker list
352cef8f 141 Int_t fESDid; // ESD track id
eb2b4f91 142 Double32_t fPID[AliPID::kSPECIES]; // PID probabilities
143 Double32_t fBudget[3]; // Integrated material budget
144 Double32_t fDE; // Integrated delta energy
4d6aee34 145 const AliTRDReconstructor *fkReconstructor;//! reconstructor link
eb2b4f91 146 AliTRDtrackV1 *fBackupTrack; //! Backup track
17896e82 147 AliTRDseedV1 *fTracklet[kNplane]; // Tracklets array defining the track
eb2b4f91 148 AliExternalTrackParam *fTrackLow; // parameters of the track which enter TRD from below (TPC)
17896e82 149 AliExternalTrackParam *fTrackHigh; // parameters of the track which enter TRD from above (HMPID, PHOS)
d9950a5a 150
352cef8f 151 ClassDef(AliTRDtrackV1, 7) // TRD track - tracklet based
d9950a5a 152};
153
3b57a3f7 154//____________________________________________________
155inline Float_t AliTRDtrackV1::GetMomentum(Int_t plane) const
156{
17896e82 157 return plane >=0 && plane < kNplane && fTrackletIndex[plane] != -1 ? fTracklet[plane]->GetMomentum() : -1.;
3b57a3f7 158}
159
160//____________________________________________________
161inline Int_t AliTRDtrackV1::GetNCross()
162{
163 Int_t ncross = 0;
164 for(Int_t ip=0; ip<kNplane; ip++){
165 if(!fTracklet[ip]) continue;
166 ncross += fTracklet[ip]->IsRowCross();
167 }
168 return ncross;
169}
170
82180ec1 171//____________________________________________________
172inline Int_t AliTRDtrackV1::GetNumberOfTracklets() const
173{
174 Int_t n = 0;
175 for(Int_t ip=0; ip<kNplane; ip++){
176 if(!fTracklet[ip]) continue;
177 n++;
178 }
179 return n;
180}
181
eb2b4f91 182//____________________________________________________
183inline UChar_t AliTRDtrackV1::GetStatusTRD(Int_t ly) const
184{
af4e990c 185 if(ly>=-1 && ly<kNplane) return (fStatus>>((ly+1)*4))&0xf;
186 return kUnknown;
eb2b4f91 187}
188
189//____________________________________________________
190inline Bool_t AliTRDtrackV1::IsTrackError(ETRDtrackError error, UInt_t status)
191{
192 return (status&0xf)==UChar_t(error);
193}
194
195//____________________________________________________
196inline Bool_t AliTRDtrackV1::IsLayerError(ETRDlayerError error, Int_t ly, UInt_t status)
197{
198 if(ly>=kNplane || ly<0) return kFALSE;
199 return ((status>>((ly+1)*4))&0xf) == UChar_t(error);
200}
181c7f7e 201
202//____________________________________________________
203inline void AliTRDtrackV1::SetReconstructor(const AliTRDReconstructor *rec)
204{
205 for(Int_t ip=0; ip<kNplane; ip++){
206 if(!fTracklet[ip]) continue;
207 fTracklet[ip]->SetReconstructor(rec);
208 }
4d6aee34 209 fkReconstructor = rec;
181c7f7e 210}
211
eb2b4f91 212//____________________________________________________
213inline void AliTRDtrackV1::SetStatus(UChar_t status, Int_t ly)
214{
215 if(ly<kNplane) fStatus|=((status&0xf)<<((ly+1)*4));
216 return;
217}
218
181c7f7e 219
3b57a3f7 220//____________________________________________________________________________
221inline Float_t AliTRDtrackV1::StatusForTOF()
222{
eb2b4f91 223 // OBSOLETE
3b57a3f7 224 // Defines the status of the TOF extrapolation
225 //
226
227 if(!fTracklet[5]) return 0.;
228
229 // Definition of res ????
230 Float_t res = /*(0.2 + 0.8 * (fN / (fNExpected + 5.0))) **/ (0.4 + 0.6 * fTracklet[5]->GetN() / 20.0);
231 res *= (0.25 + 0.8 * 40.0 / (40.0 + fBudget[2]));
232 return res;
233}
d9950a5a 234
235#endif
236
237
6e49cfdb 238