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GetFile error handling modified after Shuttle failover tests
[u/mrichter/AliRoot.git] / ITS / AliITStrackerMI.h
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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 13class TTree;
14class TTreeSRedirector;
af885e0f 15class AliESDEvent;
67c1e979 16
00a7cc50 17#include <TObjArray.h>
18#include "AliITSRecPoint.h"
bf6adc12 19#include "AliITStrackMI.h"
20#include "AliTracker.h"
e43c066c 21
22//-------------------------------------------------------------------------
23class AliITStrackerMI : public AliTracker {
24public:
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;
9a5326b1 30 virtual Bool_t GetTrackPointTrackingError(Int_t index,
31 AliTrackPoint& p, const AliESDtrack *t);
00a7cc50 32 AliITSRecPoint *GetClusterLayer(Int_t layn, Int_t ncl) const
e43c066c 33 {return fgLayers[layn].GetCluster(ncl);}
34 Int_t GetNumberOfClustersLayer(Int_t layn) const
35 {return fgLayers[layn].GetNumberOfClusters();}
36 Int_t LoadClusters(TTree *cf);
37 void UnloadClusters();
af885e0f 38 Int_t Clusters2Tracks(AliESDEvent *event);
39 Int_t PropagateBack(AliESDEvent *event);
40 Int_t RefitInward(AliESDEvent *event);
ef7253ac 41 Bool_t RefitAt(Double_t x, AliITStrackMI *seed,
42 const AliITStrackMI *t, Bool_t extra=kFALSE);
67c1e979 43 Bool_t RefitAt(Double_t x, AliITStrackMI *seed, const Int_t *clindex);
e43c066c 44 void SetupFirstPass(Int_t *flags, Double_t *cuts=0);
45 void SetupSecondPass(Int_t *flags, Double_t *cuts=0);
46
47 void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;}
48 void SetLayersNotToSkip(Int_t *l);
49 void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
00a7cc50 50 void GetNTeor(Int_t layer, const AliITSRecPoint* cl, Float_t theta, Float_t phi, Float_t &ny, Float_t &nz);
51 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 52
53 void GetDCASigma(AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz);
00a7cc50 54 Double_t GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer);
55 Int_t UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t layer) const;
e43c066c 56 class AliITSdetector {
57 public:
8221b41b 58 AliITSdetector():fR(0),fPhi(0),fSinPhi(0),fCosPhi(0),fYmin(0),fYmax(0),fZmin(0),fZmax(0){}
59 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 60 inline void GetGlobalXYZ( const AliITSRecPoint *cl, Double_t xyz[3]) const;
e43c066c 61 Double_t GetR() const {return fR;}
62 Double_t GetPhi() const {return fPhi;}
63 Double_t GetYmin() const {return fYmin;}
64 Double_t GetYmax() const {return fYmax;}
65 Double_t GetZmin() const {return fZmin;}
66 Double_t GetZmax() const {return fZmax;}
67 void SetYmin(Double_t min) {fYmin = min;}
68 void SetYmax(Double_t max) {fYmax = max;}
69 void SetZmin(Double_t min) {fZmin = min;}
70 void SetZmax(Double_t max) {fZmax = max;}
71 private:
72 Double_t fR; // polar coordinates
73 Double_t fPhi; // of this detector
74 Double_t fSinPhi; // sin of phi;
75 Double_t fCosPhi; // cos of phi
76 Double_t fYmin; // local y minimal
77 Double_t fYmax; // local max y
78 Double_t fZmin; // local z min
79 Double_t fZmax; // local z max
80 };
81
82 class AliITSlayer {
e43c066c 83 public:
84 AliITSlayer();
85 AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
86 ~AliITSlayer();
00a7cc50 87 Int_t InsertCluster(AliITSRecPoint *c);
e43c066c 88 void SortClusters();
89 void ResetClusters();
90 void ResetWeights();
91 void SelectClusters(Double_t zmi,Double_t zma,Double_t ymi,Double_t yma);
00a7cc50 92 const AliITSRecPoint *GetNextCluster(Int_t &ci);
e43c066c 93 void ResetRoad();
94 Double_t GetRoad() const {return fRoad;}
95 Double_t GetR() const {return fR;}
96 Int_t FindClusterIndex(Float_t z) const;
00a7cc50 97 AliITSRecPoint *GetCluster(Int_t i) const {return i<fN? fClusters[i]:0;}
8602c008 98 Float_t *GetWeight(Int_t i) {return i<fN ?&fClusterWeight[i]:0;}
e43c066c 99 AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
100 Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
101 Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const;
102 Int_t InRoad() const ;
103 Int_t GetNumberOfClusters() const {return fN;}
104 Int_t GetNladders() const {return fNladders;}
105 Int_t GetNdetectors() const {return fNdetectors;}
106 Int_t GetSkip() const {return fSkip;}
107 void SetSkip(Int_t skip){fSkip=skip;}
108 void IncAccepted(){fAccepted++;}
81e97e0d 109 Int_t GetAccepted() const {return fAccepted;}
b9671574 110 Int_t GetClusterTracks(Int_t i, Int_t j) const {return fClusterTracks[i][j];}
111 void SetClusterTracks(Int_t i, Int_t j, Int_t c) {fClusterTracks[i][j]=c;}
e43c066c 112 protected:
8221b41b 113 AliITSlayer(const AliITSlayer& layer);
114 AliITSlayer & operator=(const AliITSlayer& layer){
115 this->~AliITSlayer();new(this) AliITSlayer(layer);
116 return *this;}
e43c066c 117 Double_t fR; // mean radius of this layer
118 Double_t fPhiOffset; // offset of the first detector in Phi
119 Int_t fNladders; // number of ladders
120 Double_t fZOffset; // offset of the first detector in Z
121 Int_t fNdetectors; // detectors/ladder
122 AliITSdetector *fDetectors; // array of detectors
123 Int_t fN; // number of clusters
00a7cc50 124 AliITSRecPoint *fClusters[kMaxClusterPerLayer]; // pointers to clusters
e43c066c 125 Int_t fClusterIndex[kMaxClusterPerLayer]; // pointers to clusters
126 Float_t fY[kMaxClusterPerLayer]; // y position of the clusters
127 Float_t fZ[kMaxClusterPerLayer]; // z position of the clusters
128 Float_t fYB[2]; // ymin and ymax
129 //
00a7cc50 130 AliITSRecPoint *fClusters5[6][kMaxClusterPerLayer5]; // pointers to clusters - slice in y
e43c066c 131 Int_t fClusterIndex5[6][kMaxClusterPerLayer5]; // pointers to clusters - slice in y
132 Float_t fY5[6][kMaxClusterPerLayer5]; // y position of the clusters slice in y
133 Float_t fZ5[6][kMaxClusterPerLayer5]; // z position of the clusters slice in y
134 Int_t fN5[6]; // number of cluster in slice
135 Float_t fDy5; //delta y
136 Float_t fBy5[6][2]; //slice borders
137 //
00a7cc50 138 AliITSRecPoint *fClusters10[11][kMaxClusterPerLayer10]; // pointers to clusters - slice in y
e43c066c 139 Int_t fClusterIndex10[11][kMaxClusterPerLayer10]; // pointers to clusters - slice in y
140 Float_t fY10[11][kMaxClusterPerLayer10]; // y position of the clusters slice in y
141 Float_t fZ10[11][kMaxClusterPerLayer10]; // z position of the clusters slice in y
142 Int_t fN10[11]; // number of cluster in slice
f43e383b 143 Float_t fDy10; // delta y
144 Float_t fBy10[11][2]; // slice borders
e43c066c 145 //
00a7cc50 146 AliITSRecPoint *fClusters20[21][kMaxClusterPerLayer20]; // pointers to clusters - slice in y
e43c066c 147 Int_t fClusterIndex20[21][kMaxClusterPerLayer20]; // pointers to clusters - slice in y
148 Float_t fY20[21][kMaxClusterPerLayer20]; // y position of the clusters slice in y
149 Float_t fZ20[21][kMaxClusterPerLayer20]; // z position of the clusters slice in y
150 Int_t fN20[21]; // number of cluster in slice
f43e383b 151 Float_t fDy20; //delta y
152 Float_t fBy20[21][2]; //slice borders
e43c066c 153 //
00a7cc50 154 AliITSRecPoint** fClustersCs; //clusters table in current slice
e43c066c 155 Int_t *fClusterIndexCs; //cluster index in current slice
156 Float_t *fYcs; //y position in current slice
157 Float_t *fZcs; //z position in current slice
158 Int_t fNcs; //number of clusters in current slice
159 Int_t fCurrentSlice; //current slice
160 //
161 Float_t fClusterWeight[kMaxClusterPerLayer]; // probabilistic weight of the cluster
162 Int_t fClusterTracks[4][kMaxClusterPerLayer]; //tracks registered to given cluster
163 Float_t fZmax; // edges
164 Float_t fYmin; // of the
165 Float_t fYmax; // "window"
166 Int_t fI; // index of the current cluster within the "window"
167 Int_t fImax; // index of the last cluster within the "window"
168 Int_t fSkip; // indicates possibility to skip cluster
f43e383b 169 Int_t fAccepted; // accept indicator
e43c066c 170 Double_t fRoad; // road defined by the cluster density
171 };
172 AliITStrackerMI::AliITSlayer & GetLayer(Int_t layer) const;
173 AliITStrackerMI::AliITSdetector & GetDetector(Int_t layer, Int_t n) const {return GetLayer(layer).GetDetector(n); }
174
175protected:
81e97e0d 176 Int_t GetNearestLayer(const Double_t *xr) const; //get nearest upper layer close to the point xr
af885e0f 177 void FindV02(AliESDEvent *event); //try to find V0
178 void RefitV02(AliESDEvent *event); //try to refit V0's
179 void UpdateTPCV0(AliESDEvent *event); //try to update, or reject TPC V0s
e43c066c 180 void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
15dd636f 181 void CookLabel(AliITStrackMI *t,Float_t wrong) const;
e43c066c 182 Double_t GetEffectiveThickness(Double_t y, Double_t z) const;
81e97e0d 183 void FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain);
e43c066c 184 void ResetBestTrack() {
15dd636f 185 fBestTrack.~AliITStrackMI();
186 new(&fBestTrack) AliITStrackMI(fTrackToFollow);
e43c066c 187 }
15dd636f 188 void ResetTrackToFollow(const AliITStrackMI &t) {
189 fTrackToFollow.~AliITStrackMI();
190 new(&fTrackToFollow) AliITStrackMI(t);
e43c066c 191 }
15dd636f 192 void CookdEdx(AliITStrackMI* track);
193 Double_t GetNormalizedChi2(AliITStrackMI * track, Int_t mode);
194 Double_t GetTruncatedChi2(AliITStrackMI * track, Float_t fac);
195 Double_t NormalizedChi2(AliITStrackMI * track, Int_t layer);
196 Double_t GetInterpolatedChi2(AliITStrackMI * forwardtrack, AliITStrackMI * backtrack);
197 Double_t GetMatchingChi2(AliITStrackMI * track1, AliITStrackMI * track2);
e43c066c 198 Double_t GetDeadZoneProbability(Double_t zpos, Double_t zerr);
199
200 Float_t *GetWeight(Int_t index);
15dd636f 201 void AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex);
e43c066c 202 void SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode);
15dd636f 203 AliITStrackMI * GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax);
e43c066c 204 void GetBestHypothesysMIP(TObjArray &itsTracks);
15dd636f 205 void RegisterClusterTracks(AliITStrackMI* track, Int_t id);
206 void UnRegisterClusterTracks(AliITStrackMI* track, Int_t id);
00a7cc50 207 Float_t GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6]);
15dd636f 208 Int_t GetOverlapTrack(AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6], Int_t overlist[6]);
209 AliITStrackMI * GetBest2Tracks(Int_t trackID1, Int_t treackID2, Float_t th0, Float_t th1);
afd25725 210 Float_t * GetErrY(Int_t trackindex) const {return &fCoefficients[trackindex*48];}
211 Float_t * GetErrZ(Int_t trackindex) const {return &fCoefficients[trackindex*48+12];}
212 Float_t * GetNy(Int_t trackindex) const {return &fCoefficients[trackindex*48+24];}
213 Float_t * GetNz(Int_t trackindex) const {return &fCoefficients[trackindex*48+36];}
e43c066c 214 void SignDeltas( TObjArray *ClusterArray, Float_t zv);
afd25725 215 void MakeCoefficients(Int_t ntracks);
15dd636f 216 void UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const;
e43c066c 217 Int_t fI; // index of the current layer
218 static AliITSlayer fgLayers[kMaxLayer];// ITS layers
15dd636f 219 AliITStrackMI fTracks[kMaxLayer]; // track estimations at the ITS layers
220 AliITStrackMI fBestTrack; // "best" track
221 AliITStrackMI fTrackToFollow; // followed track
e43c066c 222 TObjArray fTrackHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI
81e97e0d 223 TObjArray fBestHypothesys; // ! array with track hypothesys- ARRAY is the owner of tracks- MI
628e7bb0 224 TObjArray fOriginal; // ! array with seeds from the TPC
e43c066c 225 Int_t fBestTrackIndex[100000]; // ! index of the best track
226 Int_t fCurrentEsdTrack; // ! current esd track - MI
227 Int_t fPass; // current pass through the data
228 Int_t fConstraint[2]; // constraint flags
628e7bb0 229 Bool_t fAfterV0; //indicates V0 founded
e43c066c 230 Int_t fLayersNotToSkip[kMaxLayer]; // layer masks
231 Int_t fLastLayerToTrackTo; // the innermost layer to track to
afd25725 232 Float_t * fCoefficients; //! working array with errors and mean cluster shape
233 AliESDEvent * fEsd; //! pointer to the ESD event
234 Double_t fSPDdetzcentre[4]; // centres of SPD modules in z
235 Bool_t fUseTGeo; // use TGeo to get material budget
81e97e0d 236 TTreeSRedirector *fDebugStreamer; //!debug streamer
bf6adc12 237private:
8221b41b 238 AliITStrackerMI(const AliITStrackerMI &tracker);
239 AliITStrackerMI & operator=(const AliITStrackerMI &tracker);
af885e0f 240 ClassDef(AliITStrackerMI,3) //ITS tracker MI
e43c066c 241};
242
243
244
245
246/////////////////////////////////////////////////////////
247/////////////////////////////////////////////////////////
248/////////////////////////////////////////////////////////
249
250
251
252
253
254inline void AliITStrackerMI::SetupFirstPass(Int_t *flags, Double_t *cuts) {
255 // This function sets up flags and cuts for the first tracking pass
256 //
257 // flags[0] - vertex constaint flag
258 // negative means "skip the pass"
259 // 0 means "no constraint"
260 // positive means "normal constraint"
261
262 fConstraint[0]=flags[0];
263 if (cuts==0) return;
264}
265
266inline void AliITStrackerMI::SetupSecondPass(Int_t *flags, Double_t *cuts) {
267 // This function sets up flags and cuts for the second tracking pass
268 //
269 // flags[0] - vertex constaint flag
270 // negative means "skip the pass"
271 // 0 means "no constraint"
272 // positive means "normal constraint"
273
274 fConstraint[1]=flags[0];
275 if (cuts==0) return;
276}
277
278inline void AliITStrackerMI::CookLabel(AliKalmanTrack *t,Float_t wrong) const {
279 //--------------------------------------------------------------------
280 //This function "cooks" a track label. If label<0, this track is fake.
281 //--------------------------------------------------------------------
282 Int_t tpcLabel=t->GetLabel();
283 if (tpcLabel<0) return;
284 AliTracker::CookLabel(t,wrong);
285 if (tpcLabel!=TMath::Abs(t->GetLabel())){
286 t->SetFakeRatio(1.);
287 }
288 if (tpcLabel !=t->GetLabel()) {
289 t->SetLabel(-tpcLabel);
290 }
291}
292
15dd636f 293inline Double_t AliITStrackerMI::NormalizedChi2(AliITStrackMI * track, Int_t layer)
e43c066c 294{
295 //--------------------------------------------------------------------
296 //get normalize chi2
297 //--------------------------------------------------------------------
b9671574 298 track->SetNormChi2(layer,2.*track->GetNSkipped()+0.25*track->GetNDeadZone()+track->GetdEdxMismatch()+track->GetChi2()/
e43c066c 299 //track->fNormChi2[layer] = 2.*track->fNSkipped+0.25*track->fNDeadZone+track->fdEdxMismatch+track->fChi22/
b9671574 300 TMath::Max(double(track->GetNumberOfClusters()-track->GetNSkipped()),
301 1./(1.+track->GetNSkipped())));
302 return track->GetNormChi2(layer);
e43c066c 303}
00a7cc50 304inline void AliITStrackerMI::AliITSdetector::GetGlobalXYZ(const AliITSRecPoint *cl, Double_t xyz[3]) const
e43c066c 305{
306 //
307 // get cluster coordinates in global cooordinate
308 //
309 xyz[2] = cl->GetZ();
310 xyz[0] = fR*fCosPhi - cl->GetY()*fSinPhi;
311 xyz[1] = fR*fSinPhi + cl->GetY()*fCosPhi;
312}
313#endif