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e43c066c | 1 | #ifndef ALIITSTRACKERMI_H |
2 | #define ALIITSTRACKERMI_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
bf6adc12 | 6 | |
e43c066c | 7 | //------------------------------------------------------------------------- |
8 | // ITS tracker | |
15dd636f | 9 | // reads AliITSclusterMI clusters and creates AliITStrackMI tracks |
10 | // Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch | |
e43c066c | 11 | //------------------------------------------------------------------------- |
12 | ||
bf6adc12 | 13 | class TTree; |
14 | class TTreeSRedirector; | |
af885e0f | 15 | class AliESDEvent; |
67c1e979 | 16 | |
00a7cc50 | 17 | #include <TObjArray.h> |
18 | #include "AliITSRecPoint.h" | |
bf6adc12 | 19 | #include "AliITStrackMI.h" |
20 | #include "AliTracker.h" | |
e43c066c | 21 | |
22 | //------------------------------------------------------------------------- | |
23 | class AliITStrackerMI : public AliTracker { | |
24 | public: | |
8221b41b | 25 | AliITStrackerMI(); |
1f3e997f | 26 | AliITStrackerMI(const Char_t *geom); |
8221b41b | 27 | virtual ~AliITStrackerMI(); |
e43c066c | 28 | AliCluster *GetCluster(Int_t index) const; |
df29e9a4 | 29 | virtual Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const; |
00a7cc50 | 30 | AliITSRecPoint *GetClusterLayer(Int_t layn, Int_t ncl) const |
e43c066c | 31 | {return fgLayers[layn].GetCluster(ncl);} |
32 | Int_t GetNumberOfClustersLayer(Int_t layn) const | |
33 | {return fgLayers[layn].GetNumberOfClusters();} | |
34 | Int_t LoadClusters(TTree *cf); | |
35 | void UnloadClusters(); | |
af885e0f | 36 | Int_t Clusters2Tracks(AliESDEvent *event); |
37 | Int_t PropagateBack(AliESDEvent *event); | |
38 | Int_t RefitInward(AliESDEvent *event); | |
ef7253ac | 39 | Bool_t RefitAt(Double_t x, AliITStrackMI *seed, |
40 | const AliITStrackMI *t, Bool_t extra=kFALSE); | |
67c1e979 | 41 | Bool_t RefitAt(Double_t x, AliITStrackMI *seed, const Int_t *clindex); |
e43c066c | 42 | void SetupFirstPass(Int_t *flags, Double_t *cuts=0); |
43 | void SetupSecondPass(Int_t *flags, Double_t *cuts=0); | |
44 | ||
45 | void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;} | |
46 | void SetLayersNotToSkip(Int_t *l); | |
47 | void UseClusters(const AliKalmanTrack *t, Int_t from=0) const; | |
00a7cc50 | 48 | void GetNTeor(Int_t layer, const AliITSRecPoint* cl, Float_t theta, Float_t phi, Float_t &ny, Float_t &nz); |
49 | Int_t GetError(Int_t layer, const AliITSRecPoint*cl, Float_t theta, Float_t phi, Float_t expQ, Float_t &erry, Float_t &errz); | |
628e7bb0 | 50 | |
51 | void GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz); | |
00a7cc50 | 52 | Double_t GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer); |
53 | Int_t UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t layer) const; | |
e43c066c | 54 | class AliITSdetector { |
55 | public: | |
8221b41b | 56 | AliITSdetector():fR(0),fPhi(0),fSinPhi(0),fCosPhi(0),fYmin(0),fYmax(0),fZmin(0),fZmax(0){} |
57 | AliITSdetector(Double_t r,Double_t phi):fR(r),fPhi(phi),fSinPhi(TMath::Sin(phi)),fCosPhi(TMath::Cos(phi)),fYmin(10000),fYmax(-1000),fZmin(10000),fZmax(-1000) {} | |
00a7cc50 | 58 | inline void GetGlobalXYZ( const AliITSRecPoint *cl, Double_t xyz[3]) const; |
e43c066c | 59 | Double_t GetR() const {return fR;} |
60 | Double_t GetPhi() const {return fPhi;} | |
61 | Double_t GetYmin() const {return fYmin;} | |
62 | Double_t GetYmax() const {return fYmax;} | |
63 | Double_t GetZmin() const {return fZmin;} | |
64 | Double_t GetZmax() const {return fZmax;} | |
65 | void SetYmin(Double_t min) {fYmin = min;} | |
66 | void SetYmax(Double_t max) {fYmax = max;} | |
67 | void SetZmin(Double_t min) {fZmin = min;} | |
68 | void SetZmax(Double_t max) {fZmax = max;} | |
69 | private: | |
70 | Double_t fR; // polar coordinates | |
71 | Double_t fPhi; // of this detector | |
72 | Double_t fSinPhi; // sin of phi; | |
73 | Double_t fCosPhi; // cos of phi | |
74 | Double_t fYmin; // local y minimal | |
75 | Double_t fYmax; // local max y | |
76 | Double_t fZmin; // local z min | |
77 | Double_t fZmax; // local z max | |
78 | }; | |
79 | ||
80 | class AliITSlayer { | |
e43c066c | 81 | public: |
82 | AliITSlayer(); | |
83 | AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd); | |
84 | ~AliITSlayer(); | |
00a7cc50 | 85 | Int_t InsertCluster(AliITSRecPoint *c); |
e43c066c | 86 | void SortClusters(); |
87 | void ResetClusters(); | |
88 | void ResetWeights(); | |
89 | void SelectClusters(Double_t zmi,Double_t zma,Double_t ymi,Double_t yma); | |
00a7cc50 | 90 | const AliITSRecPoint *GetNextCluster(Int_t &ci); |
e43c066c | 91 | void ResetRoad(); |
92 | Double_t GetRoad() const {return fRoad;} | |
93 | Double_t GetR() const {return fR;} | |
94 | Int_t FindClusterIndex(Float_t z) const; | |
00a7cc50 | 95 | AliITSRecPoint *GetCluster(Int_t i) const {return i<fN? fClusters[i]:0;} |
8602c008 | 96 | Float_t *GetWeight(Int_t i) {return i<fN ?&fClusterWeight[i]:0;} |
e43c066c | 97 | AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; } |
98 | Int_t FindDetectorIndex(Double_t phi, Double_t z) const; | |
99 | Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const; | |
100 | Int_t InRoad() const ; | |
101 | Int_t GetNumberOfClusters() const {return fN;} | |
102 | Int_t GetNladders() const {return fNladders;} | |
103 | Int_t GetNdetectors() const {return fNdetectors;} | |
104 | Int_t GetSkip() const {return fSkip;} | |
105 | void SetSkip(Int_t skip){fSkip=skip;} | |
106 | void IncAccepted(){fAccepted++;} | |
81e97e0d | 107 | Int_t GetAccepted() const {return fAccepted;} |
b9671574 | 108 | Int_t GetClusterTracks(Int_t i, Int_t j) const {return fClusterTracks[i][j];} |
109 | void SetClusterTracks(Int_t i, Int_t j, Int_t c) {fClusterTracks[i][j]=c;} | |
e43c066c | 110 | protected: |
8221b41b | 111 | AliITSlayer(const AliITSlayer& layer); |
112 | AliITSlayer & operator=(const AliITSlayer& layer){ | |
113 | this->~AliITSlayer();new(this) AliITSlayer(layer); | |
114 | return *this;} | |
e43c066c | 115 | Double_t fR; // mean radius of this layer |
116 | Double_t fPhiOffset; // offset of the first detector in Phi | |
117 | Int_t fNladders; // number of ladders | |
118 | Double_t fZOffset; // offset of the first detector in Z | |
119 | Int_t fNdetectors; // detectors/ladder | |
120 | AliITSdetector *fDetectors; // array of detectors | |
121 | Int_t fN; // number of clusters | |
00a7cc50 | 122 | AliITSRecPoint *fClusters[kMaxClusterPerLayer]; // pointers to clusters |
e43c066c | 123 | Int_t fClusterIndex[kMaxClusterPerLayer]; // pointers to clusters |
124 | Float_t fY[kMaxClusterPerLayer]; // y position of the clusters | |
125 | Float_t fZ[kMaxClusterPerLayer]; // z position of the clusters | |
126 | Float_t fYB[2]; // ymin and ymax | |
127 | // | |
00a7cc50 | 128 | AliITSRecPoint *fClusters5[6][kMaxClusterPerLayer5]; // pointers to clusters - slice in y |
e43c066c | 129 | Int_t fClusterIndex5[6][kMaxClusterPerLayer5]; // pointers to clusters - slice in y |
130 | Float_t fY5[6][kMaxClusterPerLayer5]; // y position of the clusters slice in y | |
131 | Float_t fZ5[6][kMaxClusterPerLayer5]; // z position of the clusters slice in y | |
132 | Int_t fN5[6]; // number of cluster in slice | |
133 | Float_t fDy5; //delta y | |
134 | Float_t fBy5[6][2]; //slice borders | |
135 | // | |
00a7cc50 | 136 | AliITSRecPoint *fClusters10[11][kMaxClusterPerLayer10]; // pointers to clusters - slice in y |
e43c066c | 137 | Int_t fClusterIndex10[11][kMaxClusterPerLayer10]; // pointers to clusters - slice in y |
138 | Float_t fY10[11][kMaxClusterPerLayer10]; // y position of the clusters slice in y | |
139 | Float_t fZ10[11][kMaxClusterPerLayer10]; // z position of the clusters slice in y | |
140 | Int_t fN10[11]; // number of cluster in slice | |
f43e383b | 141 | Float_t fDy10; // delta y |
142 | Float_t fBy10[11][2]; // slice borders | |
e43c066c | 143 | // |
00a7cc50 | 144 | AliITSRecPoint *fClusters20[21][kMaxClusterPerLayer20]; // pointers to clusters - slice in y |
e43c066c | 145 | Int_t fClusterIndex20[21][kMaxClusterPerLayer20]; // pointers to clusters - slice in y |
146 | Float_t fY20[21][kMaxClusterPerLayer20]; // y position of the clusters slice in y | |
147 | Float_t fZ20[21][kMaxClusterPerLayer20]; // z position of the clusters slice in y | |
148 | Int_t fN20[21]; // number of cluster in slice | |
f43e383b | 149 | Float_t fDy20; //delta y |
150 | Float_t fBy20[21][2]; //slice borders | |
e43c066c | 151 | // |
00a7cc50 | 152 | AliITSRecPoint** fClustersCs; //clusters table in current slice |
e43c066c | 153 | Int_t *fClusterIndexCs; //cluster index in current slice |
154 | Float_t *fYcs; //y position in current slice | |
155 | Float_t *fZcs; //z position in current slice | |
156 | Int_t fNcs; //number of clusters in current slice | |
157 | Int_t fCurrentSlice; //current slice | |
158 | // | |
159 | Float_t fClusterWeight[kMaxClusterPerLayer]; // probabilistic weight of the cluster | |
160 | Int_t fClusterTracks[4][kMaxClusterPerLayer]; //tracks registered to given cluster | |
161 | Float_t fZmax; // edges | |
162 | Float_t fYmin; // of the | |
163 | Float_t fYmax; // "window" | |
164 | Int_t fI; // index of the current cluster within the "window" | |
165 | Int_t fImax; // index of the last cluster within the "window" | |
166 | Int_t fSkip; // indicates possibility to skip cluster | |
f43e383b | 167 | Int_t fAccepted; // accept indicator |
e43c066c | 168 | Double_t fRoad; // road defined by the cluster density |
169 | }; | |
170 | AliITStrackerMI::AliITSlayer & GetLayer(Int_t layer) const; | |
171 | AliITStrackerMI::AliITSdetector & GetDetector(Int_t layer, Int_t n) const {return GetLayer(layer).GetDetector(n); } | |
172 | ||
173 | protected: | |
81e97e0d | 174 | Int_t GetNearestLayer(const Double_t *xr) const; //get nearest upper layer close to the point xr |
af885e0f | 175 | void FindV02(AliESDEvent *event); //try to find V0 |
176 | void RefitV02(AliESDEvent *event); //try to refit V0's | |
177 | void UpdateTPCV0(AliESDEvent *event); //try to update, or reject TPC V0s | |
e43c066c | 178 | void CookLabel(AliKalmanTrack *t,Float_t wrong) const; |
15dd636f | 179 | void CookLabel(AliITStrackMI *t,Float_t wrong) const; |
e43c066c | 180 | Double_t GetEffectiveThickness(Double_t y, Double_t z) const; |
81e97e0d | 181 | void FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain); |
e43c066c | 182 | void ResetBestTrack() { |
15dd636f | 183 | fBestTrack.~AliITStrackMI(); |
184 | new(&fBestTrack) AliITStrackMI(fTrackToFollow); | |
e43c066c | 185 | } |
15dd636f | 186 | void ResetTrackToFollow(const AliITStrackMI &t) { |
187 | fTrackToFollow.~AliITStrackMI(); | |
188 | new(&fTrackToFollow) AliITStrackMI(t); | |
e43c066c | 189 | } |
15dd636f | 190 | void CookdEdx(AliITStrackMI* track); |
191 | Double_t GetNormalizedChi2(AliITStrackMI * track, Int_t mode); | |
192 | Double_t GetTruncatedChi2(AliITStrackMI * track, Float_t fac); | |
193 | Double_t NormalizedChi2(AliITStrackMI * track, Int_t layer); | |
194 | Double_t GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack); | |
195 | Double_t GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2); | |
e43c066c | 196 | Double_t GetDeadZoneProbability(Double_t zpos, Double_t zerr); |
197 | ||
198 | Float_t *GetWeight(Int_t index); | |
15dd636f | 199 | void AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex); |
e43c066c | 200 | void SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode); |
15dd636f | 201 | AliITStrackMI * GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax); |
e43c066c | 202 | void GetBestHypothesysMIP(TObjArray &itsTracks); |
15dd636f | 203 | void RegisterClusterTracks(AliITStrackMI* track, Int_t id); |
204 | void UnRegisterClusterTracks(AliITStrackMI* track, Int_t id); | |
00a7cc50 | 205 | Float_t GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6]); |
15dd636f | 206 | Int_t GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6], Int_t overlist[6]); |
207 | AliITStrackMI * GetBest2Tracks(Int_t trackID1, Int_t treackID2, Float_t th0, Float_t th1); | |
afd25725 | 208 | Float_t * GetErrY(Int_t trackindex) const {return &fCoefficients[trackindex*48];} |
209 | Float_t * GetErrZ(Int_t trackindex) const {return &fCoefficients[trackindex*48+12];} | |
210 | Float_t * GetNy(Int_t trackindex) const {return &fCoefficients[trackindex*48+24];} | |
211 | Float_t * GetNz(Int_t trackindex) const {return &fCoefficients[trackindex*48+36];} | |
e43c066c | 212 | void SignDeltas( TObjArray *ClusterArray, Float_t zv); |
afd25725 | 213 | void MakeCoefficients(Int_t ntracks); |
15dd636f | 214 | void UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const; |
e43c066c | 215 | Int_t fI; // index of the current layer |
216 | static AliITSlayer fgLayers[kMaxLayer];// ITS layers | |
15dd636f | 217 | AliITStrackMI fTracks[kMaxLayer]; // track estimations at the ITS layers |
218 | AliITStrackMI fBestTrack; // "best" track | |
219 | AliITStrackMI fTrackToFollow; // followed track | |
e43c066c | 220 | TObjArray fTrackHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI |
81e97e0d | 221 | TObjArray fBestHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI |
628e7bb0 | 222 | TObjArray fOriginal; // ! array with seeds from the TPC |
e43c066c | 223 | Int_t fBestTrackIndex[100000]; // ! index of the best track |
224 | Int_t fCurrentEsdTrack; // ! current esd track - MI | |
225 | Int_t fPass; // current pass through the data | |
226 | Int_t fConstraint[2]; // constraint flags | |
628e7bb0 | 227 | Bool_t fAfterV0; //indicates V0 founded |
e43c066c | 228 | Int_t fLayersNotToSkip[kMaxLayer]; // layer masks |
229 | Int_t fLastLayerToTrackTo; // the innermost layer to track to | |
afd25725 | 230 | Float_t * fCoefficients; //! working array with errors and mean cluster shape |
231 | AliESDEvent * fEsd; //! pointer to the ESD event | |
232 | Double_t fSPDdetzcentre[4]; // centres of SPD modules in z | |
233 | Bool_t fUseTGeo; // use TGeo to get material budget | |
81e97e0d | 234 | TTreeSRedirector *fDebugStreamer; //!debug streamer |
bf6adc12 | 235 | private: |
8221b41b | 236 | AliITStrackerMI(const AliITStrackerMI &tracker); |
237 | AliITStrackerMI & operator=(const AliITStrackerMI &tracker); | |
af885e0f | 238 | ClassDef(AliITStrackerMI,3) //ITS tracker MI |
e43c066c | 239 | }; |
240 | ||
241 | ||
242 | ||
243 | ||
244 | ///////////////////////////////////////////////////////// | |
245 | ///////////////////////////////////////////////////////// | |
246 | ///////////////////////////////////////////////////////// | |
247 | ||
248 | ||
249 | ||
250 | ||
251 | ||
252 | inline void AliITStrackerMI::SetupFirstPass(Int_t *flags, Double_t *cuts) { | |
253 | // This function sets up flags and cuts for the first tracking pass | |
254 | // | |
255 | // flags[0] - vertex constaint flag | |
256 | // negative means "skip the pass" | |
257 | // 0 means "no constraint" | |
258 | // positive means "normal constraint" | |
259 | ||
260 | fConstraint[0]=flags[0]; | |
261 | if (cuts==0) return; | |
262 | } | |
263 | ||
264 | inline void AliITStrackerMI::SetupSecondPass(Int_t *flags, Double_t *cuts) { | |
265 | // This function sets up flags and cuts for the second tracking pass | |
266 | // | |
267 | // flags[0] - vertex constaint flag | |
268 | // negative means "skip the pass" | |
269 | // 0 means "no constraint" | |
270 | // positive means "normal constraint" | |
271 | ||
272 | fConstraint[1]=flags[0]; | |
273 | if (cuts==0) return; | |
274 | } | |
275 | ||
276 | inline void AliITStrackerMI::CookLabel(AliKalmanTrack *t,Float_t wrong) const { | |
277 | //-------------------------------------------------------------------- | |
278 | //This function "cooks" a track label. If label<0, this track is fake. | |
279 | //-------------------------------------------------------------------- | |
280 | Int_t tpcLabel=t->GetLabel(); | |
281 | if (tpcLabel<0) return; | |
282 | AliTracker::CookLabel(t,wrong); | |
283 | if (tpcLabel!=TMath::Abs(t->GetLabel())){ | |
284 | t->SetFakeRatio(1.); | |
285 | } | |
286 | if (tpcLabel !=t->GetLabel()) { | |
287 | t->SetLabel(-tpcLabel); | |
288 | } | |
289 | } | |
290 | ||
15dd636f | 291 | inline Double_t AliITStrackerMI::NormalizedChi2(AliITStrackMI * track, Int_t layer) |
e43c066c | 292 | { |
293 | //-------------------------------------------------------------------- | |
294 | //get normalize chi2 | |
295 | //-------------------------------------------------------------------- | |
b9671574 | 296 | track->SetNormChi2(layer,2.*track->GetNSkipped()+0.25*track->GetNDeadZone()+track->GetdEdxMismatch()+track->GetChi2()/ |
e43c066c | 297 | //track->fNormChi2[layer] = 2.*track->fNSkipped+0.25*track->fNDeadZone+track->fdEdxMismatch+track->fChi22/ |
b9671574 | 298 | TMath::Max(double(track->GetNumberOfClusters()-track->GetNSkipped()), |
299 | 1./(1.+track->GetNSkipped()))); | |
300 | return track->GetNormChi2(layer); | |
e43c066c | 301 | } |
00a7cc50 | 302 | inline void AliITStrackerMI::AliITSdetector::GetGlobalXYZ(const AliITSRecPoint *cl, Double_t xyz[3]) const |
e43c066c | 303 | { |
304 | // | |
305 | // get cluster coordinates in global cooordinate | |
306 | // | |
307 | xyz[2] = cl->GetZ(); | |
308 | xyz[0] = fR*fCosPhi - cl->GetY()*fSinPhi; | |
309 | xyz[1] = fR*fSinPhi + cl->GetY()*fCosPhi; | |
310 | } | |
311 | #endif |