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32d38de2 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | TO CHECK | |
18 | GetBz usage | |
19 | ||
20 | */ | |
21 | ||
22 | //------------------------------------------------------------------------- | |
23 | // Implementation of the ITS Upgrade tracker mother class. | |
24 | //------------------------------------------------------------------------- | |
25 | #include <TTree.h> | |
26 | #include <Riostream.h> | |
27 | #include <TMath.h> | |
28 | ||
29 | #include "AliITSUTrackerGlo.h" | |
30 | #include "AliESDEvent.h" | |
31 | #include "AliESDtrack.h" | |
32 | #include "AliITSURecoDet.h" | |
33 | #include "AliITSURecoSens.h" | |
34 | #include "AliITSUReconstructor.h" | |
35 | #include "AliITSReconstructor.h" | |
36 | #include "AliITSUSeed.h" | |
37 | #include "AliITSUAux.h" | |
c61e50c3 | 38 | #include "AliITSUClusterPix.h" |
32d38de2 | 39 | using namespace AliITSUAux; |
40 | using namespace TMath; | |
41 | ||
42 | ||
e2d2481c | 43 | |
c8d1f258 | 44 | //----------------- tmp stuff ----------------- |
c8d1f258 | 45 | |
32d38de2 | 46 | ClassImp(AliITSUTrackerGlo) |
e2d2481c | 47 | |
48 | const Double_t AliITSUTrackerGlo::fgkToler = 1e-6;// tolerance for layer on-surface check | |
49 | ||
50 | ||
32d38de2 | 51 | //_________________________________________________________________________ |
52 | AliITSUTrackerGlo::AliITSUTrackerGlo(AliITSUReconstructor* rec) | |
53 | : fReconstructor(rec) | |
54 | ,fITS(0) | |
0091e9f0 | 55 | ,fCurrESDtrack(0) |
32d38de2 | 56 | ,fCurrMass(kPionMass) |
716ccba7 | 57 | ,fHypStore(100) |
58 | ,fCurrHyp(0) | |
c61e50c3 | 59 | ,fSeedsPool("AliITSUSeed",0) |
b8b59e05 | 60 | ,fFreeSeedsID(0) |
61 | ,fNFreeSeeds(0) | |
62 | ,fLastSeedID(0) | |
42c3d4bd | 63 | ,fDefTrackConds(0) |
64 | ,fCurrTrackCond(0) | |
c51c3124 | 65 | ,fTrackPhase(-1) |
8b16dbae | 66 | ,fClInfo(0) |
32d38de2 | 67 | { |
68 | // Default constructor | |
69 | if (rec) Init(rec); | |
70 | } | |
71 | ||
72 | //_________________________________________________________________________ | |
73 | AliITSUTrackerGlo::~AliITSUTrackerGlo() | |
74 | { | |
75 | // Default destructor | |
76 | // | |
8b16dbae | 77 | delete[] fClInfo; |
32d38de2 | 78 | // |
79 | } | |
80 | ||
81 | //_________________________________________________________________________ | |
82 | void AliITSUTrackerGlo::Init(AliITSUReconstructor* rec) | |
83 | { | |
84 | // init with external reconstructor | |
c61e50c3 | 85 | // |
3d4dc3e2 | 86 | fITS = rec->GetITSInterface(); |
8b16dbae | 87 | int nLr = fITS->GetNLayersActive(); |
88 | fClInfo = new Int_t[nLr<<1]; | |
c61e50c3 | 89 | // |
90 | fSeedsPool.ExpandCreateFast(1000); // RS TOCHECK | |
b8b59e05 | 91 | fFreeSeedsID.Set(1000); |
c61e50c3 | 92 | // |
32d38de2 | 93 | } |
94 | ||
42c3d4bd | 95 | //_________________________________________________________________________ |
96 | void AliITSUTrackerGlo::CreateDefaultTrackCond() | |
97 | { | |
98 | // creates default tracking conditions to be used when recoparam does not provide them | |
99 | int nLr = fITS->GetNLayersActive(); | |
100 | fClInfo = new Int_t[nLr<<1]; | |
101 | // | |
102 | AliITSUTrackCond* cond = new AliITSUTrackCond(); | |
103 | // | |
104 | cond->SetNLayers(fITS->GetNLayersActive()); | |
105 | cond->AddNewCondition(nLr); | |
106 | cond->AddGroupPattern( 0xffff ); // require all layers hit | |
107 | // | |
108 | fDefTrackConds.AddLast(cond); | |
109 | // | |
110 | AliInfo("Created conditions: "); | |
111 | for (int i=0;i<fDefTrackConds.GetEntriesFast();i++) fDefTrackConds[i]->Print(); | |
112 | // | |
113 | } | |
114 | ||
115 | ||
32d38de2 | 116 | //_________________________________________________________________________ |
117 | Int_t AliITSUTrackerGlo::Clusters2Tracks(AliESDEvent *esdEv) | |
118 | { | |
119 | // | |
42c3d4bd | 120 | TObjArray *trackConds = 0; |
32d38de2 | 121 | // |
e7d83d38 | 122 | SetTrackingPhase(kClus2Tracks); |
b8b59e05 | 123 | ResetSeedsPool(); |
716ccba7 | 124 | int nTrESD = esdEv->GetNumberOfTracks(); |
c51c3124 | 125 | AliInfo(Form("Will try to find prolongations for %d tracks",nTrESD)); |
126 | AliITSUReconstructor::GetRecoParam()->Print(); | |
716ccba7 | 127 | fHypStore.Delete(); |
128 | if (fHypStore.GetSize()<nTrESD) fHypStore.Expand(nTrESD+100); | |
129 | // | |
32d38de2 | 130 | fITS->ProcessClusters(); |
716ccba7 | 131 | // |
42c3d4bd | 132 | int nTrackCond = AliITSUReconstructor::GetRecoParam()->GetNTrackingConditions(); |
133 | if (nTrackCond<1) { | |
134 | if (!fDefTrackConds.GetEntriesFast()) { | |
135 | AliInfo("No tracking conditions found in recoparams, creating default one requesting all layers hit"); | |
136 | CreateDefaultTrackCond(); | |
137 | } | |
138 | trackConds = &fDefTrackConds; | |
139 | nTrackCond = trackConds->GetEntriesFast(); | |
140 | } | |
141 | else trackConds = AliITSUReconstructor::GetRecoParam()->GetTrackingConditions(); | |
142 | // | |
143 | for (int icnd=0;icnd<nTrackCond;icnd++) { | |
144 | fCurrTrackCond = (AliITSUTrackCond*)trackConds->UncheckedAt(icnd); | |
145 | // select ESD tracks to propagate | |
146 | for (int itr=0;itr<nTrESD;itr++) { | |
147 | AliESDtrack *esdTr = esdEv->GetTrack(itr); | |
148 | AliInfo(Form("Processing track %d | MCLabel: %d",itr,esdTr->GetTPCLabel())); | |
149 | if (!NeedToProlong(esdTr)) continue; // are we interested in this track? | |
150 | FindTrack(esdTr, itr); | |
151 | } | |
152 | // | |
153 | AliInfo(Form("SeedsPool: %d, BookedUpTo: %d, free: %d",fSeedsPool.GetSize(),fSeedsPool.GetEntriesFast(),fNFreeSeeds)); | |
154 | fHypStore.Print(); | |
155 | FinalizeHypotheses(); | |
156 | } | |
716ccba7 | 157 | // |
32d38de2 | 158 | return 0; |
159 | } | |
160 | ||
161 | //_________________________________________________________________________ | |
c51c3124 | 162 | Int_t AliITSUTrackerGlo::PropagateBack(AliESDEvent *esdEv) |
32d38de2 | 163 | { |
164 | // | |
c51c3124 | 165 | // Do outward fits in ITS |
166 | // | |
e7d83d38 | 167 | SetTrackingPhase(kPropBack); |
c51c3124 | 168 | int nTrESD = esdEv->GetNumberOfTracks(); |
e7d83d38 | 169 | AliInfo(Form("Will propagate back %d tracks",nTrESD)); |
c51c3124 | 170 | // |
171 | double bz0 = GetBz(); | |
172 | Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()}; | |
173 | AliITSUTrackHyp dummyTr,*currTr=0; | |
174 | const double kWatchStep=10.; // for larger steps watch arc vs segment difference | |
175 | Double_t times[AliPID::kSPECIES]; | |
176 | // | |
177 | // | |
178 | for (int itr=0;itr<nTrESD;itr++) { | |
179 | AliESDtrack *esdTr = esdEv->GetTrack(itr); | |
180 | // Start time integral and add distance from current position to vertex | |
181 | if (esdTr->IsOn(AliESDtrack::kITSout)) continue; // already done | |
182 | // | |
183 | esdTr->GetXYZ(xyzTrk); | |
184 | Double_t dst = 0.; // set initial track lenght, tof | |
185 | { | |
186 | double dxs = xyzTrk[0] - xyzVtx[0]; | |
187 | double dys = xyzTrk[1] - xyzVtx[1]; | |
188 | double dzs = xyzTrk[2] - xyzVtx[2]; | |
189 | // RS: for large segment steps d use approximation of cicrular arc s by | |
190 | // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2) | |
191 | // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature) | |
192 | // Hence s^2/d^2 = (1+1/6 p^2)^2 | |
193 | dst = dxs*dxs + dys*dys; | |
194 | if (dst > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor | |
195 | double crv = Abs(esdTr->GetC(bz0)); | |
196 | double fcarc = 1.+crv*crv*dst/6.; | |
197 | dst *= fcarc*fcarc; | |
198 | } | |
199 | dst += dzs*dzs; | |
200 | dst = Sqrt(dst); | |
201 | } | |
202 | // | |
203 | esdTr->SetStatus(AliESDtrack::kTIME); | |
204 | // | |
205 | if (!esdTr->IsOn(AliESDtrack::kITSin)) { // case of tracks w/o ITS prolongation: just set the time integration | |
e2d2481c | 206 | dummyTr.AliExternalTrackParam::operator=(*esdTr); |
c51c3124 | 207 | dummyTr.StartTimeIntegral(); |
e2d2481c | 208 | dummyTr.AddTimeStep(dst); |
c51c3124 | 209 | dummyTr.GetIntegratedTimes(times); |
210 | esdTr->SetIntegratedTimes(times); | |
211 | esdTr->SetIntegratedLength(dummyTr.GetIntegratedLength()); | |
212 | continue; | |
213 | } | |
214 | // | |
215 | currTr = GetTrackHyp(itr); | |
216 | currTr->StartTimeIntegral(); | |
217 | currTr->AddTimeStep(dst); | |
e2d2481c | 218 | printf("Before resetCov: "); currTr->AliExternalTrackParam::Print(); |
219 | currTr->ResetCovariance(10000); | |
68a0f687 | 220 | if (RefitTrack(currTr,fITS->GetRMax())) { // propagate to exit from the ITS/TPC screen |
221 | UpdateESDTrack(currTr,AliESDtrack::kITSout); | |
222 | } | |
e7d83d38 | 223 | else { |
224 | AliInfo(Form("Refit Failed for track %d",itr)); | |
225 | } | |
c51c3124 | 226 | // |
227 | } | |
32d38de2 | 228 | // |
32d38de2 | 229 | return 0; |
230 | } | |
231 | ||
232 | //_________________________________________________________________________ | |
e7d83d38 | 233 | Int_t AliITSUTrackerGlo::RefitInward(AliESDEvent *esdEv) |
32d38de2 | 234 | { |
235 | // | |
e7d83d38 | 236 | // refit the tracks inward, using current cov.matrix |
237 | // | |
238 | SetTrackingPhase(kRefitInw); | |
239 | Int_t nTrESD = esdEv->GetNumberOfTracks(); | |
240 | AliInfo(Form("Will refit inward %d tracks",nTrESD)); | |
241 | AliITSUTrackHyp *currTr=0; | |
242 | // | |
243 | for (int itr=0;itr<nTrESD;itr++) { | |
244 | AliESDtrack *esdTr = esdEv->GetTrack(itr); | |
245 | // Start time integral and add distance from current position to vertex | |
246 | UInt_t trStat = esdTr->GetStatus(); | |
247 | if ( !(trStat & AliESDtrack::kITSout) ) continue; | |
248 | if ( trStat & AliESDtrack::kITSrefit ) continue; // already done | |
249 | if ( (trStat & AliESDtrack::kTPCout) && !(trStat & AliESDtrack::kTPCrefit) ) continue; | |
250 | // | |
251 | currTr = GetTrackHyp(itr); | |
252 | currTr->AliExternalTrackParam::operator=(*esdTr); // fetch current ESDtrack kinematics | |
253 | if (RefitTrack(currTr,fITS->GetRMin())) { // propagate up to inside radius of the beam pipe | |
254 | UpdateESDTrack(currTr,AliESDtrack::kITSrefit); | |
255 | } | |
256 | else { | |
257 | AliInfo(Form("Refit Failed for track %d",itr)); | |
258 | } | |
259 | } | |
32d38de2 | 260 | // |
32d38de2 | 261 | return 0; |
262 | } | |
263 | ||
264 | //_________________________________________________________________________ | |
265 | Int_t AliITSUTrackerGlo::LoadClusters(TTree * treeRP) | |
266 | { | |
267 | // read from tree (if pointer provided) or directly from the ITS reco interface | |
268 | // | |
269 | return fReconstructor->LoadClusters(treeRP); | |
270 | } | |
271 | ||
272 | //_________________________________________________________________________ | |
273 | void AliITSUTrackerGlo::UnloadClusters() | |
274 | { | |
275 | // | |
276 | // To be implemented | |
277 | // | |
278 | ||
279 | Info("UnloadClusters","To be implemented"); | |
280 | } | |
281 | //_________________________________________________________________________ | |
282 | AliCluster * AliITSUTrackerGlo::GetCluster(Int_t /*index*/) const | |
283 | { | |
284 | // | |
285 | // To be implemented | |
286 | // | |
287 | ||
288 | Info("GetCluster","To be implemented"); | |
289 | return 0x0; | |
290 | } | |
291 | ||
292 | //_________________________________________________________________________ | |
293 | Bool_t AliITSUTrackerGlo::NeedToProlong(AliESDtrack* esdTr) | |
294 | { | |
295 | // do we need to match this track to ITS? | |
296 | // | |
297 | static double bz = GetBz(); | |
298 | if (!esdTr->IsOn(AliESDtrack::kTPCin) || | |
299 | esdTr->IsOn(AliESDtrack::kTPCout) || | |
300 | esdTr->IsOn(AliESDtrack::kITSin) || | |
301 | esdTr->GetKinkIndex(0)>0) return kFALSE; | |
302 | // | |
c61e50c3 | 303 | if (esdTr->Pt()<AliITSUReconstructor::GetRecoParam()->GetMinPtForProlongation()) return kFALSE; |
32d38de2 | 304 | // |
305 | float dtz[2]; | |
306 | esdTr->GetDZ(GetX(),GetY(),GetZ(),bz,dtz); | |
307 | // if track is not V0 candidata but has large offset wrt IP, reject it. RS TOCHECK | |
c61e50c3 | 308 | if ( !(esdTr->GetV0Index(0)>0 && dtz[0]>AliITSUReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()) |
309 | && (Abs(dtz[0])>AliITSUReconstructor::GetRecoParam()->GetMaxDForProlongation() || | |
310 | Abs(dtz[1])>AliITSUReconstructor::GetRecoParam()->GetMaxDZForProlongation())) return kFALSE; | |
32d38de2 | 311 | // |
312 | return kTRUE; | |
313 | } | |
314 | ||
315 | //_________________________________________________________________________ | |
716ccba7 | 316 | void AliITSUTrackerGlo::FindTrack(AliESDtrack* esdTr, Int_t esdID) |
32d38de2 | 317 | { |
318 | // find prolongaion candidates finding for single seed | |
319 | // | |
3e4e3c23 | 320 | AliITSUSeed seedUC; // copy of the seed from the upper layer |
321 | AliITSUSeed seedT; // transient seed between the seedUC and new prolongation hypothesis | |
322 | // | |
3e4e3c23 | 323 | if (!InitHypothesis(esdTr,esdID)) return; // initialize prolongations hypotheses tree |
32d38de2 | 324 | // |
173b3073 | 325 | AliITSURecoSens *hitSens[AliITSURecoSens::kNNeighbors+1]; |
f8832015 | 326 | // |
c61e50c3 | 327 | TObjArray clArr; // container for transfer of clusters matching to seed |
32d38de2 | 328 | // |
3e4e3c23 | 329 | int nLrActive = fITS->GetNLayersActive(); |
330 | for (int ila=nLrActive;ila--;) { | |
32d38de2 | 331 | int ilaUp = ila+1; // prolong seeds from layer above |
3e4e3c23 | 332 | // |
333 | // for the outermost layer the seed is created from the ESD track | |
334 | int nSeedsUp = (ilaUp==nLrActive) ? 1 : fCurrHyp->GetNSeeds(ilaUp); | |
335 | // | |
32d38de2 | 336 | for (int isd=0;isd<nSeedsUp;isd++) { |
3e4e3c23 | 337 | AliITSUSeed* seedU; |
338 | if (ilaUp==nLrActive) { | |
339 | seedU = 0; | |
340 | seedUC.InitFromESDTrack(esdTr); | |
341 | } | |
342 | else { | |
343 | seedU = fCurrHyp->GetSeed(ilaUp,isd); // seed on prev.active layer to prolong | |
344 | seedUC = *seedU; // its copy will be prolonged | |
b8b59e05 | 345 | seedUC.SetParent(seedU); |
3e4e3c23 | 346 | } |
943e1898 | 347 | seedUC.ResetFMatrix(); // reset the matrix for propagation to next layer |
32d38de2 | 348 | // go till next active layer |
c8d1f258 | 349 | AliInfo(Form("working on Lr:%d Seed:%d of %d",ila,isd,nSeedsUp)); |
f8832015 | 350 | if (!TransportToLayer(&seedUC, fITS->GetLrIDActive(ilaUp), fITS->GetLrIDActive(ila)) ) { |
32d38de2 | 351 | // |
0091e9f0 | 352 | AliInfo("Transport failed"); |
32d38de2 | 353 | // Check if the seed satisfies to track definition |
b8b59e05 | 354 | if (NeedToKill(&seedUC,kTransportFailed) && seedU) KillSeed(seedU,kTRUE); |
32d38de2 | 355 | continue; // RS TODO: decide what to do with tracks stopped on higher layers w/o killing |
356 | } | |
357 | AliITSURecoLayer* lrA = fITS->GetLayerActive(ila); | |
f8832015 | 358 | if (!GetRoadWidth(&seedUC, ila)) { // failed to find road width on the layer |
b8b59e05 | 359 | if (NeedToKill(&seedUC,kRWCheckFailed) && seedU) KillSeed(seedU,kTRUE); |
32d38de2 | 360 | continue; |
361 | } | |
173b3073 | 362 | int nsens = lrA->FindSensors(&fTrImpData[kTrPhi0], hitSens); // find detectors which may be hit by the track |
0091e9f0 | 363 | AliInfo(Form("Will check %d sensors on lr:%d ",nsens,ila)); |
32d38de2 | 364 | // |
943e1898 | 365 | double bz = GetBz(); |
32d38de2 | 366 | for (int isn=nsens;isn--;) { |
f8832015 | 367 | seedT = seedUC; |
c61e50c3 | 368 | AliITSURecoSens* sens = hitSens[isn]; |
f8832015 | 369 | // |
943e1898 | 370 | // We need to propagate the seed to sensor on lrA staying the frame of the sensor from prev.layer, |
371 | // since the transport matrix should be defined in this frame. | |
372 | double xs; // X in the TF of current seed, corresponding to intersection with sensor plane | |
373 | if (!seedT.GetTrackingXAtXAlpha(sens->GetXTF(),sens->GetPhiTF(),bz, xs)) continue; | |
8b16dbae | 374 | if (!PropagateSeed(&seedT,xs,fCurrMass)) continue; |
375 | // if (!seedT.PropagateToX(xs,bz)) continue; | |
716ccba7 | 376 | // if (!seedT.Rotate(sens->GetPhiTF())) continue; |
377 | if (!seedT.RotateToAlpha(sens->GetPhiTF())) continue; | |
943e1898 | 378 | // |
f8832015 | 379 | int clID0 = sens->GetFirstClusterId(); |
c61e50c3 | 380 | for (int icl=sens->GetNClusters();icl--;) { |
f8832015 | 381 | int res = CheckCluster(&seedT,ila,clID0+icl); |
382 | // | |
383 | if (res==kStopSearchOnSensor) break; // stop looking on this sensor | |
384 | if (res==kClusterNotMatching) continue; // cluster does not match | |
385 | // cluster is matching and it was added to the hypotheses tree | |
c61e50c3 | 386 | } |
32d38de2 | 387 | } |
f8832015 | 388 | // cluster search is done. Do we need ta have a version of this seed skipping current layer |
389 | seedT.SetLr(ila); | |
716ccba7 | 390 | if (!NeedToKill(&seedT,kMissingCluster)) { |
391 | AliITSUSeed* seedSkp = NewSeedFromPool(&seedT); | |
392 | double penalty = -AliITSUReconstructor::GetRecoParam()->GetMissPenalty(ila); | |
393 | // to do: make penalty to account for probability to miss the cluster for good reason | |
394 | seedSkp->SetChi2Cl(penalty); | |
395 | AddProlongationHypothesis(seedSkp,ila); | |
396 | } | |
32d38de2 | 397 | } |
716ccba7 | 398 | ((TObjArray*)fCurrHyp->GetLayerSeeds(ila))->Sort(); |
c8d1f258 | 399 | printf(">>> All hypotheses on lr %d: \n",ila); |
716ccba7 | 400 | for (int ih=0;ih<fCurrHyp->GetNSeeds(ila);ih++) { |
401 | printf(" #%3d ",ih); fCurrHyp->GetSeed(ila,ih)->Print(); | |
402 | // | |
403 | /* | |
404 | if (ila!=0) continue; | |
405 | double vecL[5] = {0}; | |
406 | double matL[15] = {0}; | |
407 | AliITSUSeed* sp = fCurrHyp->GetSeed(ila,ih); | |
408 | while(sp->GetParent()) { | |
409 | sp->Smooth(vecL,matL); | |
410 | if (sp->GetLayerID()>=fITS->GetNLayersActive()-1) break; | |
411 | sp = (AliITSUSeed*)sp->GetParent(); | |
412 | } | |
413 | */ | |
c8d1f258 | 414 | } |
32d38de2 | 415 | } |
416 | // | |
716ccba7 | 417 | SaveCurrentTrackHypotheses(); |
418 | // | |
32d38de2 | 419 | } |
420 | ||
421 | //_________________________________________________________________________ | |
3e4e3c23 | 422 | Bool_t AliITSUTrackerGlo::InitHypothesis(AliESDtrack *esdTr, Int_t esdID) |
32d38de2 | 423 | { |
c61e50c3 | 424 | // init prolongaion candidates finding for single seed |
716ccba7 | 425 | fCurrHyp = GetTrackHyp(esdID); |
426 | if (fCurrHyp) return kTRUE; | |
427 | // | |
32d38de2 | 428 | fCurrMass = esdTr->GetMass(); |
0091e9f0 | 429 | fCurrESDtrack = esdTr; |
32d38de2 | 430 | if (fCurrMass<kPionMass*0.9) fCurrMass = kPionMass; // don't trust to mu, e identification from TPCin |
c61e50c3 | 431 | // |
3e4e3c23 | 432 | fCurrHyp = new AliITSUTrackHyp(fITS->GetNLayersActive()); |
433 | fCurrHyp->SetESDTrack(esdTr); | |
716ccba7 | 434 | fCurrHyp->SetUniqueID(esdID); |
c51c3124 | 435 | fCurrHyp->SetMass(fCurrMass); |
716ccba7 | 436 | SetTrackHyp(fCurrHyp,esdID); |
3e4e3c23 | 437 | // |
32d38de2 | 438 | return kTRUE; |
439 | // TO DO | |
440 | } | |
441 | ||
442 | //_________________________________________________________________________ | |
443 | Bool_t AliITSUTrackerGlo::TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo) | |
444 | { | |
445 | // transport seed from layerFrom to the entrance of layerTo | |
446 | // | |
8b16dbae | 447 | // |
448 | if (lTo==lFrom) AliFatal(Form("was called with lFrom=%d lTo=%d",lFrom,lTo)); | |
449 | // | |
32d38de2 | 450 | int dir = lTo > lFrom ? 1:-1; |
451 | AliITSURecoLayer* lrFr = fITS->GetLayer(lFrom); // this can be 0 when extrapolation from TPC to ITS is requested | |
452 | Bool_t checkFirst = kTRUE; | |
453 | while(lFrom!=lTo) { | |
32d38de2 | 454 | if (lrFr) { |
e2d2481c | 455 | if (!GoToExitFromLayer(seed,lrFr,dir,checkFirst)) return kFALSE; // go till the end of current layer |
456 | checkFirst = kFALSE; | |
32d38de2 | 457 | } |
458 | AliITSURecoLayer* lrTo = fITS->GetLayer( (lFrom+=dir) ); | |
459 | if (!lrTo) AliFatal(Form("Layer %d does not exist",lFrom)); | |
460 | // | |
461 | // go the entrance of the layer, assuming no materials in between | |
8b16dbae | 462 | double xToGo = lrTo->GetR(-dir); |
dde91d5d | 463 | if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE; |
44785f3e | 464 | if (!PropagateSeed(seed,xToGo,fCurrMass,100, kFALSE )) return kFALSE; |
32d38de2 | 465 | lrFr = lrTo; |
466 | } | |
467 | return kTRUE; | |
468 | // | |
469 | } | |
470 | ||
3e4e3c23 | 471 | //_________________________________________________________________________ |
472 | Bool_t AliITSUTrackerGlo::TransportToLayer(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo) | |
473 | { | |
474 | // transport track from layerFrom to the entrance of layerTo | |
475 | // | |
8b16dbae | 476 | if (lTo==lFrom) AliFatal(Form("was called with lFrom=%d lTo=%d",lFrom,lTo)); |
477 | // | |
3e4e3c23 | 478 | int dir = lTo > lFrom ? 1:-1; |
479 | AliITSURecoLayer* lrFr = fITS->GetLayer(lFrom); // this can be 0 when extrapolation from TPC to ITS is requested | |
480 | Bool_t checkFirst = kTRUE; | |
481 | while(lFrom!=lTo) { | |
3e4e3c23 | 482 | if (lrFr) { |
e2d2481c | 483 | if (!GoToExitFromLayer(seed,lrFr,dir,checkFirst)) return kFALSE; // go till the end of current layer |
484 | checkFirst = kFALSE; | |
3e4e3c23 | 485 | } |
486 | AliITSURecoLayer* lrTo = fITS->GetLayer( (lFrom+=dir) ); | |
487 | if (!lrTo) AliFatal(Form("Layer %d does not exist",lFrom)); | |
488 | // | |
e2d2481c | 489 | if (!GoToExitFromLayer(seed,lrTo,dir)) return kFALSE; // go the entrance of the layer, assuming no materials in between |
3e4e3c23 | 490 | lrFr = lrTo; |
491 | } | |
492 | return kTRUE; | |
493 | // | |
494 | } | |
495 | ||
e2d2481c | 496 | //_________________________________________________________________________ |
497 | Bool_t AliITSUTrackerGlo::GoToExitFromLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check) | |
498 | { | |
499 | // go to the exit from lr in direction dir, applying material corrections in steps specific for this layer | |
500 | // If check is requested, do this only provided the track has not exited the layer already | |
501 | double xToGo = lr->GetR(dir); | |
502 | if (check) { // do we need to track till the surface of the current layer ? | |
503 | double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius | |
e7d83d38 | 504 | // AliInfo(Form(" dir:%d Cur: %e Tgt: %e",dir,Sqrt(curR2),xToGo)); |
e2d2481c | 505 | if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // on the surface or outside of the layer |
506 | else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // on the surface or outside of the layer | |
507 | } | |
508 | if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE; | |
509 | // go via layer to its boundary, applying material correction. | |
510 | if (!PropagateSeed(seed,xToGo,fCurrMass, lr->GetMaxStep())) return kFALSE; | |
e7d83d38 | 511 | // |
e2d2481c | 512 | return kTRUE; |
513 | // | |
514 | } | |
515 | ||
516 | //_________________________________________________________________________ | |
517 | Bool_t AliITSUTrackerGlo::GoToExitFromLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check) | |
518 | { | |
519 | // go to the exit from lr in direction dir, applying material corrections in steps specific for this layer | |
520 | // If check is requested, do this only provided the track has not exited the layer already | |
521 | double xToGo = lr->GetR(dir); | |
522 | if (check) { // do we need to track till the surface of the current layer ? | |
523 | double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius | |
524 | if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // on the surface or outside of the layer | |
525 | else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // on the surface or outside of the layer | |
526 | } | |
527 | if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE; | |
528 | // go via layer to its boundary, applying material correction. | |
529 | if (!PropagateSeed(seed,xToGo,fCurrMass, lr->GetMaxStep())) return kFALSE; | |
e7d83d38 | 530 | // |
e2d2481c | 531 | return kTRUE; |
532 | // | |
533 | } | |
534 | ||
535 | ||
536 | //_________________________________________________________________________ | |
537 | Bool_t AliITSUTrackerGlo::GoToEntranceToLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check) | |
538 | { | |
539 | // go to the entrance of lr in direction dir, w/o applying material corrections. | |
540 | // If check is requested, do this only provided the track did not reach the layer already | |
541 | double xToGo = lr->GetR(-dir); | |
542 | if (check) { // do we need to track till the surface of the current layer ? | |
543 | double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius | |
544 | if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // already passed | |
545 | else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // already passed | |
546 | } | |
547 | if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE; | |
548 | // go via layer to its boundary, applying material correction. | |
549 | if (!PropagateSeed(seed,xToGo,fCurrMass, 100, kFALSE)) return kFALSE; | |
550 | return kTRUE; | |
551 | // | |
552 | } | |
553 | ||
554 | //_________________________________________________________________________ | |
555 | Bool_t AliITSUTrackerGlo::GoToEntranceToLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check) | |
556 | { | |
557 | // go to the entrance of lr in direction dir, w/o applying material corrections. | |
558 | // If check is requested, do this only provided the track did not reach the layer already | |
559 | double xToGo = lr->GetR(-dir); | |
560 | if (check) { // do we need to track till the surface of the current layer ? | |
561 | double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius | |
562 | if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // already passed | |
563 | else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // already passed | |
564 | } | |
565 | if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE; | |
566 | // go via layer to its boundary, applying material correction. | |
567 | if (!PropagateSeed(seed,xToGo,fCurrMass, 100, kFALSE)) return kFALSE; | |
568 | return kTRUE; | |
569 | // | |
570 | } | |
571 | ||
32d38de2 | 572 | //_________________________________________________________________________ |
c61e50c3 | 573 | Bool_t AliITSUTrackerGlo::GetRoadWidth(AliITSUSeed* seed, int ilrA) |
32d38de2 | 574 | { |
575 | // calculate road width in terms of phi and z for the track which MUST be on the external radius of the layer | |
576 | // as well as some aux info | |
577 | double bz = GetBz(); | |
578 | AliITSURecoLayer* lrA = fITS->GetLayerActive(ilrA); | |
c61e50c3 | 579 | seed->GetXYZ(&fTrImpData[kTrXIn]); // lab position at the entrance from above |
943e1898 | 580 | static AliExternalTrackParam sc; // seed copy for manipalitions |
581 | sc = *seed; | |
32d38de2 | 582 | // |
c61e50c3 | 583 | fTrImpData[kTrPhiIn] = ATan2(fTrImpData[kTrYIn],fTrImpData[kTrXIn]); |
943e1898 | 584 | if (!sc.Rotate(fTrImpData[kTrPhiIn])) return kFALSE; // go to the frame of the entry point into the layer |
c61e50c3 | 585 | double dr = lrA->GetDR(); // approximate X dist at the inner radius |
943e1898 | 586 | if (!sc.GetXYZAt(sc.GetX()-dr, bz, fTrImpData + kTrXOut)) { |
32d38de2 | 587 | // special case: track does not reach inner radius, might be tangential |
943e1898 | 588 | double r = sc.GetD(0,0,bz); |
32d38de2 | 589 | double x; |
943e1898 | 590 | if (!sc.GetXatLabR(r,x,bz,-1)) { |
591 | sc.Print(); | |
592 | AliFatal(Form("This should not happen: r=%f",r)); | |
32d38de2 | 593 | } |
943e1898 | 594 | dr = Abs(sc.GetX() - x); |
595 | if (!sc.GetXYZAt(x, bz, fTrImpData + kTrXOut)) { | |
596 | sc.Print(); | |
597 | AliFatal(Form("This should not happen: x=%f",x)); | |
32d38de2 | 598 | } |
599 | } | |
600 | // | |
c61e50c3 | 601 | fTrImpData[kTrPhiOut] = ATan2(fTrImpData[kTrYOut],fTrImpData[kTrXOut]); |
943e1898 | 602 | double sgy = sc.GetSigmaY2() + dr*dr*sc.GetSigmaSnp2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(ilrA); |
603 | double sgz = sc.GetSigmaZ2() + dr*dr*sc.GetSigmaTgl2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(ilrA); | |
c61e50c3 | 604 | sgy = Sqrt(sgy)*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY(); |
605 | sgz = Sqrt(sgz)*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ(); | |
606 | fTrImpData[kTrPhi0] = 0.5*(fTrImpData[kTrPhiOut]+fTrImpData[kTrPhiIn]); | |
173b3073 | 607 | fTrImpData[kTrZ0] = 0.5*(fTrImpData[kTrZOut]+fTrImpData[kTrZIn]); |
c61e50c3 | 608 | fTrImpData[kTrDPhi] = 0.5*Abs(fTrImpData[kTrPhiOut]-fTrImpData[kTrPhiIn]) + sgy/lrA->GetR(); |
173b3073 | 609 | fTrImpData[kTrDZ] = 0.5*Abs(fTrImpData[kTrZOut]-fTrImpData[kTrZIn]) + sgz; |
32d38de2 | 610 | // |
611 | return kTRUE; | |
612 | } | |
613 | ||
b8b59e05 | 614 | //________________________________________ |
615 | void AliITSUTrackerGlo::ResetSeedsPool() | |
616 | { | |
617 | // mark all seeds in the pool as unused | |
618 | AliInfo(Form("CurrentSize: %d, BookedUpTo: %d, free: %d",fSeedsPool.GetSize(),fSeedsPool.GetEntriesFast(),fNFreeSeeds)); | |
619 | fNFreeSeeds = 0; | |
620 | fSeedsPool.Clear(); // seeds don't allocate memory | |
621 | } | |
622 | ||
623 | ||
624 | //________________________________________ | |
625 | void AliITSUTrackerGlo::MarkSeedFree(AliITSUSeed *sd) | |
32d38de2 | 626 | { |
b8b59e05 | 627 | // account that this seed is "deleted" |
628 | int id = sd->GetPoolID(); | |
629 | if (id<0) { | |
630 | AliError(Form("Freeing of seed %p NOT from the pool is requested",sd)); | |
631 | return; | |
632 | } | |
633 | // AliInfo(Form("%d %p",id, seed)); | |
634 | fSeedsPool.RemoveAt(id); | |
635 | if (fFreeSeedsID.GetSize()<=fNFreeSeeds) fFreeSeedsID.Set( 2*fNFreeSeeds + 100 ); | |
636 | fFreeSeedsID.GetArray()[fNFreeSeeds++] = id; | |
32d38de2 | 637 | } |
f8832015 | 638 | |
639 | //_________________________________________________________________________ | |
640 | Int_t AliITSUTrackerGlo::CheckCluster(AliITSUSeed* track, Int_t lr, Int_t clID) | |
641 | { | |
642 | // Check if the cluster (in tracking frame!) is matching to track. | |
643 | // The track must be already propagated to sensor tracking frame. | |
644 | // Returns: kStopSearchOnSensor if the search on given sensor should be stopped, | |
645 | // kClusterMatching if the cluster is matching | |
646 | // kClusterMatching otherwise | |
647 | // | |
f8832015 | 648 | const double kTolerX = 5e-4; |
649 | AliCluster *cl = fITS->GetLayerActive(lr)->GetCluster(clID); | |
650 | // | |
c8d1f258 | 651 | Bool_t goodCl = kFALSE; |
716ccba7 | 652 | int currLabel = Abs(fCurrESDtrack->GetTPCLabel()); |
653 | // | |
8b16dbae | 654 | if (cl->GetLabel(0)>=0) { |
655 | for (int i=0;i<3;i++) if (cl->GetLabel(i)>=0 && cl->GetLabel(i)==currLabel) {goodCl = kTRUE; break;} | |
656 | } | |
716ccba7 | 657 | else goodCl = kTRUE; |
c8d1f258 | 658 | // |
f8832015 | 659 | if (TMath::Abs(cl->GetX())>kTolerX) { // if due to the misalingment X is large, propagate track only |
c8d1f258 | 660 | if (!track->PropagateParamOnlyTo(track->GetX()+cl->GetX(),GetBz())) { |
3dd9c283 | 661 | if (goodCl) {printf("Loose good cl: Failed propagation. |"); cl->Print();} |
c8d1f258 | 662 | return kStopSearchOnSensor; // propagation failed, seedT is intact |
663 | } | |
f8832015 | 664 | } |
3dd9c283 | 665 | double dy = cl->GetY()-track->GetY(); |
c8d1f258 | 666 | double dz = cl->GetZ()-track->GetZ(); |
0091e9f0 | 667 | // |
f8832015 | 668 | double dy2 = dy*dy; |
669 | double tol2 = (track->GetSigmaY2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(lr))* | |
670 | AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY()*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY(); // RS TOOPTIMIZE | |
671 | if (dy2>tol2) { // the clusters are sorted in Z(col) then in Y(row). | |
3dd9c283 | 672 | if (goodCl) {printf("Loose good cl: dy2=%e > tol2=%e |",dy2,tol2); cl->Print();} |
f8832015 | 673 | if (dy>0) return kStopSearchOnSensor; // No chance that other cluster of this sensor will match (all Y's will be even larger) |
674 | else return kClusterNotMatching; // Other clusters may match | |
675 | } | |
c8d1f258 | 676 | double dz2 = dz*dz; |
f8832015 | 677 | tol2 = (track->GetSigmaZ2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(lr))* |
678 | AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ()*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ(); // RS TOOPTIMIZE | |
c8d1f258 | 679 | if (dz2>tol2) { |
3dd9c283 | 680 | if (goodCl) {printf("Loose good cl: dz2=%e > tol2=%e |",dz2,tol2); cl->Print();} |
c8d1f258 | 681 | return kClusterNotMatching; // Other clusters may match |
682 | } | |
f8832015 | 683 | // |
684 | // check chi2 | |
685 | Double_t p[2]={cl->GetY(), cl->GetZ()}; | |
686 | Double_t cov[3]={cl->GetSigmaY2(), cl->GetSigmaYZ(), cl->GetSigmaZ2()}; | |
687 | double chi2 = track->GetPredictedChi2(p,cov); | |
c8d1f258 | 688 | if (chi2>AliITSUReconstructor::GetRecoParam()->GetMaxTr2ClChi2(lr)) { |
3dd9c283 | 689 | if (goodCl) { |
716ccba7 | 690 | printf("Loose good cl: Chi2=%e > Chi2Max=%e |dy: %+.3e dz: %+.3e\n", |
691 | chi2,AliITSUReconstructor::GetRecoParam()->GetMaxTr2ClChi2(lr),dy,dz); | |
3dd9c283 | 692 | track->Print("etp"); |
693 | cl->Print(""); | |
694 | } | |
c8d1f258 | 695 | return kClusterNotMatching; |
696 | } | |
f8832015 | 697 | // |
698 | track = NewSeedFromPool(track); // input track will be reused, use its clone for updates | |
943e1898 | 699 | if (!track->Update()) { |
3dd9c283 | 700 | if (goodCl) {printf("Loose good cl: Failed update |"); cl->Print();} |
b8b59e05 | 701 | MarkSeedFree(track); |
c8d1f258 | 702 | return kClusterNotMatching; |
703 | } | |
f8832015 | 704 | track->SetChi2Cl(chi2); |
705 | track->SetLrClusterID(lr,clID); | |
706 | cl->IncreaseClusterUsage(); | |
707 | // | |
716ccba7 | 708 | track->SetFake(!goodCl); |
709 | // | |
710 | AliInfo(Form("AddCl(%d) Cl%d lr:%d: dY:%+8.4f dZ:%+8.4f (MC: %5d %5d %5d) |Chi2=%f(%c)", | |
711 | goodCl,clID,lr,dy,dz2,cl->GetLabel(0),cl->GetLabel(1),cl->GetLabel(2), chi2, track->IsFake() ? '-':'+')); | |
c8d1f258 | 712 | // |
f8832015 | 713 | AddProlongationHypothesis(track,lr); |
714 | // | |
715 | return kClusterMatching; | |
716 | } | |
c8d1f258 | 717 | |
718 | //_________________________________________________________________________ | |
719 | Bool_t AliITSUTrackerGlo::NeedToKill(AliITSUSeed *seed, Int_t flag) | |
720 | { | |
721 | // check if the seed should not be discarded | |
722 | const UShort_t kMask = 0xffff; | |
723 | if (flag==kMissingCluster) { | |
724 | int lastChecked = seed->GetLayerID(); | |
725 | UShort_t patt = seed->GetHitsPattern(); | |
726 | if (lastChecked) patt |= ~(kMask<<lastChecked); // not all layers were checked, complete unchecked once by potential hits | |
42c3d4bd | 727 | Bool_t seedOK = fCurrTrackCond->CheckPattern(patt); |
c8d1f258 | 728 | return !seedOK; |
729 | } | |
730 | return kTRUE; | |
731 | } | |
44785f3e | 732 | |
733 | //______________________________________________________________________________ | |
734 | Bool_t AliITSUTrackerGlo::PropagateSeed(AliITSUSeed *seed, Double_t xToGo, Double_t mass, Double_t maxStep, Bool_t matCorr) | |
735 | { | |
736 | // propagate seed to given x applying material correction if requested | |
737 | const Double_t kEpsilon = 1e-5; | |
738 | Double_t xpos = seed->GetX(); | |
739 | Int_t dir = (xpos<xToGo) ? 1:-1; | |
740 | Double_t xyz0[3],xyz1[3],param[7]; | |
741 | // | |
8b16dbae | 742 | Bool_t updTime = dir>0 && seed->IsStartedTimeIntegral(); |
f497470c | 743 | if (matCorr || updTime) seed->GetXYZ(xyz1); //starting global position |
44785f3e | 744 | while ( (xToGo-xpos)*dir > kEpsilon){ |
745 | Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep); | |
746 | Double_t x = xpos+step; | |
747 | Double_t bz=GetBz(); // getting the local Bz | |
748 | if (!seed->PropagateToX(x,bz)) return kFALSE; | |
8b16dbae | 749 | double ds = 0; |
750 | if (matCorr || updTime) { | |
44785f3e | 751 | xyz0[0]=xyz1[0]; // global pos at the beginning of step |
752 | xyz0[1]=xyz1[1]; | |
753 | xyz0[2]=xyz1[2]; | |
754 | seed->GetXYZ(xyz1); // // global pos at the end of step | |
8b16dbae | 755 | if (matCorr) { |
756 | MeanMaterialBudget(xyz0,xyz1,param); | |
757 | Double_t xrho=param[0]*param[4], xx0=param[1]; | |
758 | if (dir>0) xrho = -xrho; // outward should be negative | |
759 | if (!seed->ApplyMaterialCorrection(xx0,xrho,mass,kFALSE)) return kFALSE; | |
760 | ds = param[4]; | |
761 | } | |
762 | else { // matCorr is not requested but time integral is | |
763 | double d0 = xyz1[0]-xyz0[0]; | |
764 | double d1 = xyz1[1]-xyz0[1]; | |
765 | double d2 = xyz1[2]-xyz0[2]; | |
766 | ds = TMath::Sqrt(d0*d0+d1*d1+d2*d2); | |
767 | } | |
44785f3e | 768 | } |
8b16dbae | 769 | if (updTime) seed->AddTimeStep(ds); |
44785f3e | 770 | xpos = seed->GetX(); |
771 | } | |
772 | return kTRUE; | |
773 | } | |
716ccba7 | 774 | |
3e4e3c23 | 775 | //______________________________________________________________________________ |
776 | Bool_t AliITSUTrackerGlo::PropagateSeed(AliExternalTrackParam *seed, Double_t xToGo, Double_t mass, Double_t maxStep, Bool_t matCorr) | |
777 | { | |
778 | // propagate seed to given x applying material correction if requested | |
779 | const Double_t kEpsilon = 1e-5; | |
780 | Double_t xpos = seed->GetX(); | |
781 | Int_t dir = (xpos<xToGo) ? 1:-1; | |
782 | Double_t xyz0[3],xyz1[3],param[7]; | |
783 | // | |
784 | Bool_t updTime = dir>0 && seed->IsStartedTimeIntegral(); | |
785 | if (matCorr || updTime) seed->GetXYZ(xyz1); //starting global position | |
786 | while ( (xToGo-xpos)*dir > kEpsilon){ | |
787 | Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep); | |
788 | Double_t x = xpos+step; | |
789 | Double_t bz=GetBz(); // getting the local Bz | |
790 | if (!seed->PropagateTo(x,bz)) return kFALSE; | |
791 | double ds = 0; | |
792 | if (matCorr || updTime) { | |
793 | xyz0[0]=xyz1[0]; // global pos at the beginning of step | |
794 | xyz0[1]=xyz1[1]; | |
795 | xyz0[2]=xyz1[2]; | |
796 | seed->GetXYZ(xyz1); // // global pos at the end of step | |
797 | // | |
798 | if (matCorr) { | |
799 | MeanMaterialBudget(xyz0,xyz1,param); | |
800 | Double_t xrho=param[0]*param[4], xx0=param[1]; | |
801 | if (dir>0) xrho = -xrho; // outward should be negative | |
802 | if (!seed->CorrectForMeanMaterial(xx0,xrho,mass)) return kFALSE; | |
803 | ds = param[4]; | |
804 | } | |
805 | else { // matCorr is not requested but time integral is | |
806 | double d0 = xyz1[0]-xyz0[0]; | |
807 | double d1 = xyz1[1]-xyz0[1]; | |
808 | double d2 = xyz1[2]-xyz0[2]; | |
809 | ds = TMath::Sqrt(d0*d0+d1*d1+d2*d2); | |
810 | } | |
811 | } | |
812 | if (updTime) seed->AddTimeStep(ds); | |
813 | // | |
814 | xpos = seed->GetX(); | |
815 | } | |
816 | return kTRUE; | |
817 | } | |
818 | ||
716ccba7 | 819 | //______________________________________________________________________________ |
820 | void AliITSUTrackerGlo::SaveCurrentTrackHypotheses() | |
821 | { | |
822 | // RS: shall we clean up killed seeds? | |
823 | fCurrHyp = 0; | |
824 | // TODO | |
825 | ||
826 | } | |
3e4e3c23 | 827 | |
828 | //______________________________________________________________________________ | |
829 | void AliITSUTrackerGlo::FinalizeHypotheses() | |
830 | { | |
831 | // select winner for each hypothesis, remove cl. sharing conflicts | |
832 | AliInfo("TODO"); | |
833 | // | |
834 | int nh = fHypStore.GetEntriesFast(); | |
835 | for (int ih=0;ih<nh;ih++) { | |
836 | AliITSUTrackHyp* hyp = (AliITSUTrackHyp*) fHypStore.UncheckedAt(ih); | |
69e0f089 | 837 | if (!hyp || !hyp->DefineWinner()) continue; // TODO |
68a0f687 | 838 | CookMCLabel(hyp); |
839 | UpdateESDTrack(hyp,AliESDtrack::kITSin); | |
3e4e3c23 | 840 | } |
841 | ||
842 | } | |
c51c3124 | 843 | |
844 | //______________________________________________________________________________ | |
68a0f687 | 845 | void AliITSUTrackerGlo::UpdateESDTrack(AliITSUTrackHyp* hyp,Int_t flag) |
c51c3124 | 846 | { |
847 | // update ESD track with current best hypothesis | |
848 | AliESDtrack* esdTr = hyp->GetESDTrack(); | |
849 | if (!esdTr) return; | |
850 | AliITSUSeed* win = hyp->GetWinner(); | |
851 | if (!win) return; | |
68a0f687 | 852 | switch (flag) { |
853 | case AliESDtrack::kITSin: | |
854 | esdTr->UpdateTrackParams(hyp,flag); // update kinematics | |
855 | // TODO: set cluster info | |
856 | break; | |
857 | // | |
858 | case AliESDtrack::kITSout: | |
859 | esdTr->UpdateTrackParams(hyp,flag); // update kinematics | |
860 | // TODO: avoid setting friend | |
861 | break; | |
862 | // | |
863 | case AliESDtrack::kITSrefit: | |
864 | esdTr->UpdateTrackParams(hyp,flag); // update kinematics | |
865 | // TODO: avoid setting cluster info | |
866 | break; | |
867 | default: | |
868 | AliFatal(Form("Unknown flag %d",flag)); | |
869 | } | |
c51c3124 | 870 | // |
871 | // transfer module indices | |
872 | // TODO | |
873 | } | |
874 | ||
875 | //______________________________________________________________________________ | |
68a0f687 | 876 | Bool_t AliITSUTrackerGlo::RefitTrack(AliITSUTrackHyp* trc, Double_t rDest, Bool_t stopAtLastCl) |
c51c3124 | 877 | { |
878 | // refit track till radius rDest | |
8b16dbae | 879 | AliITSUTrackHyp tmpTr; |
880 | // | |
c51c3124 | 881 | double rCurr = Sqrt(trc->GetX()*trc->GetX() + trc->GetY()*trc->GetY()); |
882 | int dir,lrStart,lrStop; | |
883 | // | |
8b16dbae | 884 | dir = rCurr<rDest ? 1 : -1; |
885 | lrStart = fITS->FindFirstLayerID(rCurr,dir); | |
886 | lrStop = fITS->FindLastLayerID(rDest,dir); | |
e2d2481c | 887 | printf("Refit %d: Lr:%d (%f) -> Lr:%d (%f)\n",dir,lrStart,rCurr, lrStop,rDest); |
888 | printf("Before refit: "); trc->AliExternalTrackParam::Print(); | |
8b16dbae | 889 | if (lrStop<0 || lrStart<0) AliFatal(Form("Failed to find start(%d) or last(%d) layers. Track from %.3f to %.3f",lrStart,lrStop,rCurr,rDest)); |
890 | // | |
68a0f687 | 891 | int ncl = trc->FetchClusterInfo(fClInfo); |
8b16dbae | 892 | fCurrMass = trc->GetMass(); |
893 | tmpTr.AliKalmanTrack::operator=(*trc); | |
894 | tmpTr.SetChi2(0); | |
68a0f687 | 895 | int iclLr[2],nclLr,clCount=0; |
c51c3124 | 896 | // |
897 | for (int ilr=lrStart;ilr!=lrStop;ilr+=dir) { | |
898 | AliITSURecoLayer* lr = fITS->GetLayer(ilr); | |
899 | if ( dir*(rCurr-lr->GetR(dir))>0) continue; // this layer is already passed | |
8b16dbae | 900 | int ilrA2,ilrA = lr->GetActiveID(); |
901 | // passive layer or active w/o hits will be traversed on the way to next cluster | |
902 | if (!lr->IsActive() || fClInfo[ilrA2=(ilrA<<1)]<0) continue; | |
903 | // | |
e2d2481c | 904 | if (ilr!=lrStart && !TransportToLayer(&tmpTr,lrStart,ilr)) { |
e7d83d38 | 905 | AliInfo(Form("Failed to transport %d -> %d\n",lrStart,ilr)); |
e2d2481c | 906 | return kFALSE; // go to the entrance to the layer |
907 | } | |
8b16dbae | 908 | lrStart = ilr; |
909 | // | |
910 | // select the order in which possible 2 clusters (in case of the overlap) will be traversed and fitted | |
911 | nclLr=0; | |
912 | if (dir>0) { // clusters are stored in increasing radius order | |
913 | iclLr[nclLr++]=fClInfo[ilrA2++]; | |
914 | if (fClInfo[ilrA2]>=0) iclLr[nclLr++]=fClInfo[ilrA2]; | |
915 | } | |
916 | else { | |
917 | if ( fClInfo[ilrA2+1]>=0 ) iclLr[nclLr++]=fClInfo[ilrA2+1]; | |
918 | iclLr[nclLr++]=fClInfo[ilrA2]; | |
919 | } | |
920 | // | |
921 | for (int icl=0;icl<nclLr;icl++) { | |
922 | AliITSUClusterPix* clus = (AliITSUClusterPix*)lr->GetCluster(iclLr[icl]); | |
923 | AliITSURecoSens* sens = lr->GetSensorFromID(clus->GetVolumeId()); | |
e7d83d38 | 924 | if (!tmpTr.Rotate(sens->GetPhiTF())) { |
925 | AliInfo(Form("Failed on rotate to %f",sens->GetPhiTF())); | |
926 | return kFALSE; | |
927 | } | |
928 | //printf("Refit cl:%d on lr %d Need to go %.4f -> %.4f\n",icl,ilrA,tmpTr.GetX(),sens->GetXTF()+clus->GetX()); | |
929 | if (!PropagateSeed(&tmpTr,sens->GetXTF()+clus->GetX(),fCurrMass)) { | |
930 | AliInfo(Form("Failed on propagate to %f",sens->GetXTF()+clus->GetX())); | |
931 | return kFALSE; | |
932 | } | |
933 | if (!tmpTr.Update(clus)) { | |
934 | AliInfo(Form("Failed on Update")); | |
935 | return kFALSE; | |
936 | } | |
937 | //printf("AfterRefit: "); tmpTr.AliExternalTrackParam::Print(); | |
68a0f687 | 938 | if (stopAtLastCl && ++clCount==ncl) return kTRUE; // it was requested to not propagate after last update |
8b16dbae | 939 | } |
c51c3124 | 940 | // |
941 | } | |
8b16dbae | 942 | // All clusters were succesfully fitted. Even if the track does not reach rDest, this is enough to validate it. |
943 | // Still, try to go as close as possible to rDest. | |
944 | // | |
945 | if (lrStart!=lrStop) { | |
e7d83d38 | 946 | //printf("Going to last layer %d -> %d\n",lrStart,lrStop); |
947 | if (!TransportToLayer(&tmpTr,lrStart,lrStop)) { | |
948 | AliInfo(Form("Failed on TransportToLayer %d->%d",lrStart,lrStop)); | |
949 | return kTRUE; | |
950 | } | |
951 | if (!GoToExitFromLayer(&tmpTr,fITS->GetLayer(lrStop),dir)) { | |
952 | AliFatal(Form("Failed on GoToExitFromLayer %d",lrStop)); | |
953 | return kTRUE; // go till the exit from layer | |
954 | } | |
e2d2481c | 955 | // |
e7d83d38 | 956 | //printf("On exit from last layer\n"); |
e2d2481c | 957 | tmpTr.AliExternalTrackParam::Print(); |
958 | // go to the destination radius | |
959 | if (!tmpTr.GetXatLabR(rDest,rDest,GetBz(),dir)) return kTRUE; | |
960 | if (!PropagateSeed(&tmpTr,rDest,fCurrMass, 100, kFALSE)) return kTRUE; | |
8b16dbae | 961 | } |
962 | trc->AliKalmanTrack::operator=(tmpTr); | |
e2d2481c | 963 | printf("After refit (now at lr %d): ",lrStart); trc->AliExternalTrackParam::Print(); |
8b16dbae | 964 | return kTRUE; |
c51c3124 | 965 | } |
dd2117a2 | 966 | |
967 | //__________________________________________________________________ | |
968 | void AliITSUTrackerGlo::CookMCLabel(AliITSUTrackHyp* hyp) | |
969 | { | |
970 | // build MC label | |
971 | // | |
972 | const int kMaxLbPerCl = 3; | |
973 | int lbID[kMaxLayers*6],lbStat[kMaxLayers*6]; | |
974 | Int_t lr,nLab=0,nCl=0; | |
975 | AliITSUSeed *seed = hyp->GetWinner(); | |
976 | while(seed) { | |
977 | int clID = seed->GetLrCluster(lr); | |
978 | if (clID>=0) { | |
979 | AliCluster *cl = fITS->GetLayerActive(lr)->GetCluster(clID); | |
980 | nCl++; | |
981 | for (int imc=0;imc<kMaxLbPerCl;imc++) { // labels within single cluster | |
982 | int trLb = cl->GetLabel(imc); | |
704d9398 | 983 | if (trLb<0) break; |
dd2117a2 | 984 | // search this mc track in already accounted ones |
985 | int iLab; | |
986 | for (iLab=0;iLab<nLab;iLab++) if (lbID[iLab]==trLb) break; | |
987 | if (iLab<nLab) lbStat[iLab]++; | |
988 | else { | |
989 | lbID[nLab] = trLb; | |
990 | lbStat[nLab++] = 1; | |
991 | } | |
992 | } // loop over given cluster's labels | |
993 | } | |
994 | seed = (AliITSUSeed*)seed->GetParent(); | |
995 | } // loop over clusters | |
996 | // | |
41343470 | 997 | if (nCl && nLab) { |
dd2117a2 | 998 | int maxLab=0,nTPCok=0; |
999 | AliESDtrack* esdTr = hyp->GetESDTrack(); | |
1000 | int tpcLab = esdTr ? Abs(esdTr->GetTPCLabel()) : -kDummyLabel; | |
1001 | for (int ilb=nLab;ilb--;) { | |
1002 | int st = lbStat[ilb]; | |
1003 | if (lbStat[maxLab]<st) maxLab=ilb; | |
1004 | if (tpcLab==lbID[ilb]) nTPCok += st; | |
1005 | } | |
1006 | hyp->SetFakeRatio(1.-float(nTPCok)/nCl); | |
1007 | hyp->SetLabel( nTPCok==nCl ? tpcLab : -tpcLab); | |
1008 | hyp->SetITSLabel( lbStat[maxLab]==nCl ? lbStat[maxLab] : -lbStat[maxLab]); // winner label | |
1009 | return; | |
1010 | } | |
1011 | // | |
1012 | hyp->SetFakeRatio(-1.); | |
1013 | hyp->SetLabel( kDummyLabel ); | |
1014 | hyp->SetITSLabel( kDummyLabel ); | |
1015 | } |