MC labeling added
[u/mrichter/AliRoot.git] / ITS / UPGRADE / AliITSUTrackerGlo.cxx
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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 39using namespace AliITSUAux;
40using namespace TMath;
41
42
e2d2481c 43
c8d1f258 44//----------------- tmp stuff -----------------
c8d1f258 45
32d38de2 46ClassImp(AliITSUTrackerGlo)
e2d2481c 47
48const Double_t AliITSUTrackerGlo::fgkToler = 1e-6;// tolerance for layer on-surface check
49
50
32d38de2 51//_________________________________________________________________________
52AliITSUTrackerGlo::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)
c8d1f258 63 ,fTrCond()
c51c3124 64 ,fTrackPhase(-1)
8b16dbae 65 ,fClInfo(0)
32d38de2 66{
67 // Default constructor
68 if (rec) Init(rec);
69}
70
71//_________________________________________________________________________
72AliITSUTrackerGlo::~AliITSUTrackerGlo()
73{
74 // Default destructor
75 //
76 delete fITS;
8b16dbae 77 delete[] fClInfo;
32d38de2 78 //
79}
80
81//_________________________________________________________________________
82void AliITSUTrackerGlo::Init(AliITSUReconstructor* rec)
83{
84 // init with external reconstructor
c61e50c3 85 //
32d38de2 86 fITS = new AliITSURecoDet(rec->GetGeom(),"ITSURecoInterface");
8b16dbae 87 int nLr = fITS->GetNLayersActive();
88 fClInfo = new Int_t[nLr<<1];
89 for (int ilr=nLr;ilr--;) {
32d38de2 90 fITS->GetLayerActive(ilr)->SetClusters(rec->GetClusters(ilr));
91 }
c61e50c3 92 //
93 fSeedsPool.ExpandCreateFast(1000); // RS TOCHECK
b8b59e05 94 fFreeSeedsID.Set(1000);
c61e50c3 95 //
c8d1f258 96 fTrCond.SetNLayers(fITS->GetNLayersActive());
97 fTrCond.AddNewCondition(5);
98 fTrCond.AddGroupPattern( (0x1<<0)|(0x1<<1) );
99 fTrCond.AddGroupPattern( (0x1<<3)|(0x1<<4) );
100 fTrCond.AddGroupPattern( (0x1<<5)|(0x1<<6) );
101 //
102 fTrCond.AddNewCondition(5);
103 fTrCond.AddGroupPattern( (0x1<<0)|(0x1<<2) );
104 fTrCond.AddGroupPattern( (0x1<<3)|(0x1<<4) );
105 fTrCond.AddGroupPattern( (0x1<<5)|(0x1<<6) );
106 //
107 fTrCond.AddNewCondition(5);
108 fTrCond.AddGroupPattern( (0x1<<1)|(0x1<<2) );
109 fTrCond.AddGroupPattern( (0x1<<3)|(0x1<<4) );
110 fTrCond.AddGroupPattern( (0x1<<5)|(0x1<<6) );
111 //
112 printf("Tracking Conditions: ");
113 fTrCond.Print();
32d38de2 114}
115
116//_________________________________________________________________________
117Int_t AliITSUTrackerGlo::Clusters2Tracks(AliESDEvent *esdEv)
118{
119 //
120 //
b8b59e05 121 ResetSeedsPool();
c51c3124 122 fTrackPhase = kClus2Tracks;
716ccba7 123 int nTrESD = esdEv->GetNumberOfTracks();
c51c3124 124 AliInfo(Form("Will try to find prolongations for %d tracks",nTrESD));
125 AliITSUReconstructor::GetRecoParam()->Print();
716ccba7 126 fHypStore.Delete();
127 if (fHypStore.GetSize()<nTrESD) fHypStore.Expand(nTrESD+100);
128 //
32d38de2 129 fITS->ProcessClusters();
130 // select ESD tracks to propagate
32d38de2 131 for (int itr=0;itr<nTrESD;itr++) {
132 AliESDtrack *esdTr = esdEv->GetTrack(itr);
0091e9f0 133 AliInfo(Form("Processing track %d | MCLabel: %d",itr,esdTr->GetTPCLabel()));
c51c3124 134 if (!NeedToProlong(esdTr)) continue; // are we interested in this track?
716ccba7 135 FindTrack(esdTr, itr);
32d38de2 136 }
716ccba7 137 //
b8b59e05 138 AliInfo(Form("SeedsPool: %d, BookedUpTo: %d, free: %d",fSeedsPool.GetSize(),fSeedsPool.GetEntriesFast(),fNFreeSeeds));
716ccba7 139 fHypStore.Print();
3e4e3c23 140 FinalizeHypotheses();
716ccba7 141 //
32d38de2 142 return 0;
143}
144
145//_________________________________________________________________________
c51c3124 146Int_t AliITSUTrackerGlo::PropagateBack(AliESDEvent *esdEv)
32d38de2 147{
148 //
c51c3124 149 // Do outward fits in ITS
150 //
b8b59e05 151
c51c3124 152 fTrackPhase = kPropBack;
153 int nTrESD = esdEv->GetNumberOfTracks();
154 AliInfo(Form("Will fit %d tracks",nTrESD));
155 //
156 double bz0 = GetBz();
157 Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
158 AliITSUTrackHyp dummyTr,*currTr=0;
159 const double kWatchStep=10.; // for larger steps watch arc vs segment difference
160 Double_t times[AliPID::kSPECIES];
161 //
162 //
163 for (int itr=0;itr<nTrESD;itr++) {
164 AliESDtrack *esdTr = esdEv->GetTrack(itr);
165 // Start time integral and add distance from current position to vertex
166 if (esdTr->IsOn(AliESDtrack::kITSout)) continue; // already done
167 //
168 esdTr->GetXYZ(xyzTrk);
169 Double_t dst = 0.; // set initial track lenght, tof
170 {
171 double dxs = xyzTrk[0] - xyzVtx[0];
172 double dys = xyzTrk[1] - xyzVtx[1];
173 double dzs = xyzTrk[2] - xyzVtx[2];
174 // RS: for large segment steps d use approximation of cicrular arc s by
175 // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2)
176 // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature)
177 // Hence s^2/d^2 = (1+1/6 p^2)^2
178 dst = dxs*dxs + dys*dys;
179 if (dst > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor
180 double crv = Abs(esdTr->GetC(bz0));
181 double fcarc = 1.+crv*crv*dst/6.;
182 dst *= fcarc*fcarc;
183 }
184 dst += dzs*dzs;
185 dst = Sqrt(dst);
186 }
187 //
188 esdTr->SetStatus(AliESDtrack::kTIME);
189 //
190 if (!esdTr->IsOn(AliESDtrack::kITSin)) { // case of tracks w/o ITS prolongation: just set the time integration
e2d2481c 191 dummyTr.AliExternalTrackParam::operator=(*esdTr);
c51c3124 192 dummyTr.StartTimeIntegral();
e2d2481c 193 dummyTr.AddTimeStep(dst);
c51c3124 194 dummyTr.GetIntegratedTimes(times);
195 esdTr->SetIntegratedTimes(times);
196 esdTr->SetIntegratedLength(dummyTr.GetIntegratedLength());
197 continue;
198 }
199 //
200 currTr = GetTrackHyp(itr);
201 currTr->StartTimeIntegral();
202 currTr->AddTimeStep(dst);
e2d2481c 203 printf("Before resetCov: "); currTr->AliExternalTrackParam::Print();
204 currTr->ResetCovariance(10000);
c51c3124 205 RefitTrack(currTr,fITS->GetRMax()); // propagate to exit from the ITS/TPC screen
206 //
207 }
32d38de2 208 //
32d38de2 209 return 0;
210}
211
212//_________________________________________________________________________
213Int_t AliITSUTrackerGlo::RefitInward(AliESDEvent * /*event*/)
214{
215 //
216 // To be implemented
217 //
218
219 Info("RefitInward","To be implemented");
220 return 0;
221}
222
223//_________________________________________________________________________
224Int_t AliITSUTrackerGlo::LoadClusters(TTree * treeRP)
225{
226 // read from tree (if pointer provided) or directly from the ITS reco interface
227 //
228 return fReconstructor->LoadClusters(treeRP);
229}
230
231//_________________________________________________________________________
232void AliITSUTrackerGlo::UnloadClusters()
233{
234 //
235 // To be implemented
236 //
237
238 Info("UnloadClusters","To be implemented");
239}
240//_________________________________________________________________________
241AliCluster * AliITSUTrackerGlo::GetCluster(Int_t /*index*/) const
242{
243 //
244 // To be implemented
245 //
246
247 Info("GetCluster","To be implemented");
248 return 0x0;
249}
250
251//_________________________________________________________________________
252Bool_t AliITSUTrackerGlo::NeedToProlong(AliESDtrack* esdTr)
253{
254 // do we need to match this track to ITS?
255 //
256 static double bz = GetBz();
257 if (!esdTr->IsOn(AliESDtrack::kTPCin) ||
258 esdTr->IsOn(AliESDtrack::kTPCout) ||
259 esdTr->IsOn(AliESDtrack::kITSin) ||
260 esdTr->GetKinkIndex(0)>0) return kFALSE;
261 //
c61e50c3 262 if (esdTr->Pt()<AliITSUReconstructor::GetRecoParam()->GetMinPtForProlongation()) return kFALSE;
32d38de2 263 //
264 float dtz[2];
265 esdTr->GetDZ(GetX(),GetY(),GetZ(),bz,dtz);
266 // if track is not V0 candidata but has large offset wrt IP, reject it. RS TOCHECK
c61e50c3 267 if ( !(esdTr->GetV0Index(0)>0 && dtz[0]>AliITSUReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation())
268 && (Abs(dtz[0])>AliITSUReconstructor::GetRecoParam()->GetMaxDForProlongation() ||
269 Abs(dtz[1])>AliITSUReconstructor::GetRecoParam()->GetMaxDZForProlongation())) return kFALSE;
32d38de2 270 //
271 return kTRUE;
272}
273
274//_________________________________________________________________________
716ccba7 275void AliITSUTrackerGlo::FindTrack(AliESDtrack* esdTr, Int_t esdID)
32d38de2 276{
277 // find prolongaion candidates finding for single seed
278 //
3e4e3c23 279 AliITSUSeed seedUC; // copy of the seed from the upper layer
280 AliITSUSeed seedT; // transient seed between the seedUC and new prolongation hypothesis
281 //
3e4e3c23 282 if (!InitHypothesis(esdTr,esdID)) return; // initialize prolongations hypotheses tree
32d38de2 283 //
173b3073 284 AliITSURecoSens *hitSens[AliITSURecoSens::kNNeighbors+1];
f8832015 285 //
c61e50c3 286 TObjArray clArr; // container for transfer of clusters matching to seed
32d38de2 287 //
3e4e3c23 288 int nLrActive = fITS->GetNLayersActive();
289 for (int ila=nLrActive;ila--;) {
32d38de2 290 int ilaUp = ila+1; // prolong seeds from layer above
3e4e3c23 291 //
292 // for the outermost layer the seed is created from the ESD track
293 int nSeedsUp = (ilaUp==nLrActive) ? 1 : fCurrHyp->GetNSeeds(ilaUp);
294 //
32d38de2 295 for (int isd=0;isd<nSeedsUp;isd++) {
3e4e3c23 296 AliITSUSeed* seedU;
297 if (ilaUp==nLrActive) {
298 seedU = 0;
299 seedUC.InitFromESDTrack(esdTr);
300 }
301 else {
302 seedU = fCurrHyp->GetSeed(ilaUp,isd); // seed on prev.active layer to prolong
303 seedUC = *seedU; // its copy will be prolonged
b8b59e05 304 seedUC.SetParent(seedU);
3e4e3c23 305 }
943e1898 306 seedUC.ResetFMatrix(); // reset the matrix for propagation to next layer
32d38de2 307 // go till next active layer
c8d1f258 308 AliInfo(Form("working on Lr:%d Seed:%d of %d",ila,isd,nSeedsUp));
f8832015 309 if (!TransportToLayer(&seedUC, fITS->GetLrIDActive(ilaUp), fITS->GetLrIDActive(ila)) ) {
32d38de2 310 //
0091e9f0 311 AliInfo("Transport failed");
32d38de2 312 // Check if the seed satisfies to track definition
b8b59e05 313 if (NeedToKill(&seedUC,kTransportFailed) && seedU) KillSeed(seedU,kTRUE);
32d38de2 314 continue; // RS TODO: decide what to do with tracks stopped on higher layers w/o killing
315 }
316 AliITSURecoLayer* lrA = fITS->GetLayerActive(ila);
f8832015 317 if (!GetRoadWidth(&seedUC, ila)) { // failed to find road width on the layer
b8b59e05 318 if (NeedToKill(&seedUC,kRWCheckFailed) && seedU) KillSeed(seedU,kTRUE);
32d38de2 319 continue;
320 }
173b3073 321 int nsens = lrA->FindSensors(&fTrImpData[kTrPhi0], hitSens); // find detectors which may be hit by the track
0091e9f0 322 AliInfo(Form("Will check %d sensors on lr:%d ",nsens,ila));
32d38de2 323 //
943e1898 324 double bz = GetBz();
32d38de2 325 for (int isn=nsens;isn--;) {
f8832015 326 seedT = seedUC;
c61e50c3 327 AliITSURecoSens* sens = hitSens[isn];
f8832015 328 //
943e1898 329 // We need to propagate the seed to sensor on lrA staying the frame of the sensor from prev.layer,
330 // since the transport matrix should be defined in this frame.
331 double xs; // X in the TF of current seed, corresponding to intersection with sensor plane
332 if (!seedT.GetTrackingXAtXAlpha(sens->GetXTF(),sens->GetPhiTF(),bz, xs)) continue;
8b16dbae 333 if (!PropagateSeed(&seedT,xs,fCurrMass)) continue;
334 // if (!seedT.PropagateToX(xs,bz)) continue;
716ccba7 335 // if (!seedT.Rotate(sens->GetPhiTF())) continue;
336 if (!seedT.RotateToAlpha(sens->GetPhiTF())) continue;
943e1898 337 //
f8832015 338 int clID0 = sens->GetFirstClusterId();
c61e50c3 339 for (int icl=sens->GetNClusters();icl--;) {
f8832015 340 int res = CheckCluster(&seedT,ila,clID0+icl);
341 //
342 if (res==kStopSearchOnSensor) break; // stop looking on this sensor
343 if (res==kClusterNotMatching) continue; // cluster does not match
344 // cluster is matching and it was added to the hypotheses tree
c61e50c3 345 }
32d38de2 346 }
f8832015 347 // cluster search is done. Do we need ta have a version of this seed skipping current layer
348 seedT.SetLr(ila);
716ccba7 349 if (!NeedToKill(&seedT,kMissingCluster)) {
350 AliITSUSeed* seedSkp = NewSeedFromPool(&seedT);
351 double penalty = -AliITSUReconstructor::GetRecoParam()->GetMissPenalty(ila);
352 // to do: make penalty to account for probability to miss the cluster for good reason
353 seedSkp->SetChi2Cl(penalty);
354 AddProlongationHypothesis(seedSkp,ila);
355 }
32d38de2 356 }
716ccba7 357 ((TObjArray*)fCurrHyp->GetLayerSeeds(ila))->Sort();
c8d1f258 358 printf(">>> All hypotheses on lr %d: \n",ila);
716ccba7 359 for (int ih=0;ih<fCurrHyp->GetNSeeds(ila);ih++) {
360 printf(" #%3d ",ih); fCurrHyp->GetSeed(ila,ih)->Print();
361 //
362 /*
363 if (ila!=0) continue;
364 double vecL[5] = {0};
365 double matL[15] = {0};
366 AliITSUSeed* sp = fCurrHyp->GetSeed(ila,ih);
367 while(sp->GetParent()) {
368 sp->Smooth(vecL,matL);
369 if (sp->GetLayerID()>=fITS->GetNLayersActive()-1) break;
370 sp = (AliITSUSeed*)sp->GetParent();
371 }
372 */
c8d1f258 373 }
32d38de2 374 }
375 //
716ccba7 376 SaveCurrentTrackHypotheses();
377 //
32d38de2 378}
379
380//_________________________________________________________________________
3e4e3c23 381Bool_t AliITSUTrackerGlo::InitHypothesis(AliESDtrack *esdTr, Int_t esdID)
32d38de2 382{
c61e50c3 383 // init prolongaion candidates finding for single seed
716ccba7 384 fCurrHyp = GetTrackHyp(esdID);
385 if (fCurrHyp) return kTRUE;
386 //
32d38de2 387 fCurrMass = esdTr->GetMass();
0091e9f0 388 fCurrESDtrack = esdTr;
32d38de2 389 if (fCurrMass<kPionMass*0.9) fCurrMass = kPionMass; // don't trust to mu, e identification from TPCin
c61e50c3 390 //
3e4e3c23 391 fCurrHyp = new AliITSUTrackHyp(fITS->GetNLayersActive());
392 fCurrHyp->SetESDTrack(esdTr);
716ccba7 393 fCurrHyp->SetUniqueID(esdID);
c51c3124 394 fCurrHyp->SetMass(fCurrMass);
716ccba7 395 SetTrackHyp(fCurrHyp,esdID);
3e4e3c23 396 //
32d38de2 397 return kTRUE;
398 // TO DO
399}
400
401//_________________________________________________________________________
402Bool_t AliITSUTrackerGlo::TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo)
403{
404 // transport seed from layerFrom to the entrance of layerTo
405 //
8b16dbae 406 //
407 if (lTo==lFrom) AliFatal(Form("was called with lFrom=%d lTo=%d",lFrom,lTo));
408 //
32d38de2 409 int dir = lTo > lFrom ? 1:-1;
410 AliITSURecoLayer* lrFr = fITS->GetLayer(lFrom); // this can be 0 when extrapolation from TPC to ITS is requested
411 Bool_t checkFirst = kTRUE;
412 while(lFrom!=lTo) {
32d38de2 413 if (lrFr) {
e2d2481c 414 if (!GoToExitFromLayer(seed,lrFr,dir,checkFirst)) return kFALSE; // go till the end of current layer
415 checkFirst = kFALSE;
32d38de2 416 }
417 AliITSURecoLayer* lrTo = fITS->GetLayer( (lFrom+=dir) );
418 if (!lrTo) AliFatal(Form("Layer %d does not exist",lFrom));
419 //
420 // go the entrance of the layer, assuming no materials in between
8b16dbae 421 double xToGo = lrTo->GetR(-dir);
dde91d5d 422 if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
44785f3e 423 if (!PropagateSeed(seed,xToGo,fCurrMass,100, kFALSE )) return kFALSE;
32d38de2 424 lrFr = lrTo;
425 }
426 return kTRUE;
427 //
428}
429
3e4e3c23 430//_________________________________________________________________________
431Bool_t AliITSUTrackerGlo::TransportToLayer(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo)
432{
433 // transport track from layerFrom to the entrance of layerTo
434 //
8b16dbae 435 if (lTo==lFrom) AliFatal(Form("was called with lFrom=%d lTo=%d",lFrom,lTo));
436 //
3e4e3c23 437 int dir = lTo > lFrom ? 1:-1;
438 AliITSURecoLayer* lrFr = fITS->GetLayer(lFrom); // this can be 0 when extrapolation from TPC to ITS is requested
439 Bool_t checkFirst = kTRUE;
440 while(lFrom!=lTo) {
3e4e3c23 441 if (lrFr) {
e2d2481c 442 if (!GoToExitFromLayer(seed,lrFr,dir,checkFirst)) return kFALSE; // go till the end of current layer
443 checkFirst = kFALSE;
3e4e3c23 444 }
445 AliITSURecoLayer* lrTo = fITS->GetLayer( (lFrom+=dir) );
446 if (!lrTo) AliFatal(Form("Layer %d does not exist",lFrom));
447 //
e2d2481c 448 if (!GoToExitFromLayer(seed,lrTo,dir)) return kFALSE; // go the entrance of the layer, assuming no materials in between
3e4e3c23 449 lrFr = lrTo;
450 }
451 return kTRUE;
452 //
453}
454
e2d2481c 455//_________________________________________________________________________
456Bool_t AliITSUTrackerGlo::GoToExitFromLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
457{
458 // go to the exit from lr in direction dir, applying material corrections in steps specific for this layer
459 // If check is requested, do this only provided the track has not exited the layer already
460 double xToGo = lr->GetR(dir);
461 if (check) { // do we need to track till the surface of the current layer ?
462 double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
463 if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // on the surface or outside of the layer
464 else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // on the surface or outside of the layer
465 }
466 if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
467 // go via layer to its boundary, applying material correction.
468 if (!PropagateSeed(seed,xToGo,fCurrMass, lr->GetMaxStep())) return kFALSE;
469 return kTRUE;
470 //
471}
472
473//_________________________________________________________________________
474Bool_t AliITSUTrackerGlo::GoToExitFromLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
475{
476 // go to the exit from lr in direction dir, applying material corrections in steps specific for this layer
477 // If check is requested, do this only provided the track has not exited the layer already
478 double xToGo = lr->GetR(dir);
479 if (check) { // do we need to track till the surface of the current layer ?
480 double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
481 if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // on the surface or outside of the layer
482 else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // on the surface or outside of the layer
483 }
484 if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
485 // go via layer to its boundary, applying material correction.
486 if (!PropagateSeed(seed,xToGo,fCurrMass, lr->GetMaxStep())) return kFALSE;
487 return kTRUE;
488 //
489}
490
491
492//_________________________________________________________________________
493Bool_t AliITSUTrackerGlo::GoToEntranceToLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
494{
495 // go to the entrance of lr in direction dir, w/o applying material corrections.
496 // If check is requested, do this only provided the track did not reach the layer already
497 double xToGo = lr->GetR(-dir);
498 if (check) { // do we need to track till the surface of the current layer ?
499 double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
500 if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // already passed
501 else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // already passed
502 }
503 if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
504 // go via layer to its boundary, applying material correction.
505 if (!PropagateSeed(seed,xToGo,fCurrMass, 100, kFALSE)) return kFALSE;
506 return kTRUE;
507 //
508}
509
510//_________________________________________________________________________
511Bool_t AliITSUTrackerGlo::GoToEntranceToLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
512{
513 // go to the entrance of lr in direction dir, w/o applying material corrections.
514 // If check is requested, do this only provided the track did not reach the layer already
515 double xToGo = lr->GetR(-dir);
516 if (check) { // do we need to track till the surface of the current layer ?
517 double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
518 if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // already passed
519 else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // already passed
520 }
521 if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
522 // go via layer to its boundary, applying material correction.
523 if (!PropagateSeed(seed,xToGo,fCurrMass, 100, kFALSE)) return kFALSE;
524 return kTRUE;
525 //
526}
527
32d38de2 528//_________________________________________________________________________
c61e50c3 529Bool_t AliITSUTrackerGlo::GetRoadWidth(AliITSUSeed* seed, int ilrA)
32d38de2 530{
531 // calculate road width in terms of phi and z for the track which MUST be on the external radius of the layer
532 // as well as some aux info
533 double bz = GetBz();
534 AliITSURecoLayer* lrA = fITS->GetLayerActive(ilrA);
c61e50c3 535 seed->GetXYZ(&fTrImpData[kTrXIn]); // lab position at the entrance from above
943e1898 536 static AliExternalTrackParam sc; // seed copy for manipalitions
537 sc = *seed;
32d38de2 538 //
c61e50c3 539 fTrImpData[kTrPhiIn] = ATan2(fTrImpData[kTrYIn],fTrImpData[kTrXIn]);
943e1898 540 if (!sc.Rotate(fTrImpData[kTrPhiIn])) return kFALSE; // go to the frame of the entry point into the layer
c61e50c3 541 double dr = lrA->GetDR(); // approximate X dist at the inner radius
943e1898 542 if (!sc.GetXYZAt(sc.GetX()-dr, bz, fTrImpData + kTrXOut)) {
32d38de2 543 // special case: track does not reach inner radius, might be tangential
943e1898 544 double r = sc.GetD(0,0,bz);
32d38de2 545 double x;
943e1898 546 if (!sc.GetXatLabR(r,x,bz,-1)) {
547 sc.Print();
548 AliFatal(Form("This should not happen: r=%f",r));
32d38de2 549 }
943e1898 550 dr = Abs(sc.GetX() - x);
551 if (!sc.GetXYZAt(x, bz, fTrImpData + kTrXOut)) {
552 sc.Print();
553 AliFatal(Form("This should not happen: x=%f",x));
32d38de2 554 }
555 }
556 //
c61e50c3 557 fTrImpData[kTrPhiOut] = ATan2(fTrImpData[kTrYOut],fTrImpData[kTrXOut]);
943e1898 558 double sgy = sc.GetSigmaY2() + dr*dr*sc.GetSigmaSnp2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(ilrA);
559 double sgz = sc.GetSigmaZ2() + dr*dr*sc.GetSigmaTgl2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(ilrA);
c61e50c3 560 sgy = Sqrt(sgy)*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY();
561 sgz = Sqrt(sgz)*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ();
562 fTrImpData[kTrPhi0] = 0.5*(fTrImpData[kTrPhiOut]+fTrImpData[kTrPhiIn]);
173b3073 563 fTrImpData[kTrZ0] = 0.5*(fTrImpData[kTrZOut]+fTrImpData[kTrZIn]);
c61e50c3 564 fTrImpData[kTrDPhi] = 0.5*Abs(fTrImpData[kTrPhiOut]-fTrImpData[kTrPhiIn]) + sgy/lrA->GetR();
173b3073 565 fTrImpData[kTrDZ] = 0.5*Abs(fTrImpData[kTrZOut]-fTrImpData[kTrZIn]) + sgz;
32d38de2 566 //
567 return kTRUE;
568}
569
b8b59e05 570//________________________________________
571void AliITSUTrackerGlo::ResetSeedsPool()
572{
573 // mark all seeds in the pool as unused
574 AliInfo(Form("CurrentSize: %d, BookedUpTo: %d, free: %d",fSeedsPool.GetSize(),fSeedsPool.GetEntriesFast(),fNFreeSeeds));
575 fNFreeSeeds = 0;
576 fSeedsPool.Clear(); // seeds don't allocate memory
577}
578
579
580//________________________________________
581void AliITSUTrackerGlo::MarkSeedFree(AliITSUSeed *sd)
32d38de2 582{
b8b59e05 583 // account that this seed is "deleted"
584 int id = sd->GetPoolID();
585 if (id<0) {
586 AliError(Form("Freeing of seed %p NOT from the pool is requested",sd));
587 return;
588 }
589 // AliInfo(Form("%d %p",id, seed));
590 fSeedsPool.RemoveAt(id);
591 if (fFreeSeedsID.GetSize()<=fNFreeSeeds) fFreeSeedsID.Set( 2*fNFreeSeeds + 100 );
592 fFreeSeedsID.GetArray()[fNFreeSeeds++] = id;
32d38de2 593}
f8832015 594
595//_________________________________________________________________________
596Int_t AliITSUTrackerGlo::CheckCluster(AliITSUSeed* track, Int_t lr, Int_t clID)
597{
598 // Check if the cluster (in tracking frame!) is matching to track.
599 // The track must be already propagated to sensor tracking frame.
600 // Returns: kStopSearchOnSensor if the search on given sensor should be stopped,
601 // kClusterMatching if the cluster is matching
602 // kClusterMatching otherwise
603 //
f8832015 604 const double kTolerX = 5e-4;
605 AliCluster *cl = fITS->GetLayerActive(lr)->GetCluster(clID);
606 //
c8d1f258 607 Bool_t goodCl = kFALSE;
716ccba7 608 int currLabel = Abs(fCurrESDtrack->GetTPCLabel());
609 //
8b16dbae 610 if (cl->GetLabel(0)>=0) {
611 for (int i=0;i<3;i++) if (cl->GetLabel(i)>=0 && cl->GetLabel(i)==currLabel) {goodCl = kTRUE; break;}
612 }
716ccba7 613 else goodCl = kTRUE;
c8d1f258 614 //
f8832015 615 if (TMath::Abs(cl->GetX())>kTolerX) { // if due to the misalingment X is large, propagate track only
c8d1f258 616 if (!track->PropagateParamOnlyTo(track->GetX()+cl->GetX(),GetBz())) {
3dd9c283 617 if (goodCl) {printf("Loose good cl: Failed propagation. |"); cl->Print();}
c8d1f258 618 return kStopSearchOnSensor; // propagation failed, seedT is intact
619 }
f8832015 620 }
3dd9c283 621 double dy = cl->GetY()-track->GetY();
c8d1f258 622 double dz = cl->GetZ()-track->GetZ();
0091e9f0 623 //
f8832015 624 double dy2 = dy*dy;
625 double tol2 = (track->GetSigmaY2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(lr))*
626 AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY()*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY(); // RS TOOPTIMIZE
627 if (dy2>tol2) { // the clusters are sorted in Z(col) then in Y(row).
3dd9c283 628 if (goodCl) {printf("Loose good cl: dy2=%e > tol2=%e |",dy2,tol2); cl->Print();}
f8832015 629 if (dy>0) return kStopSearchOnSensor; // No chance that other cluster of this sensor will match (all Y's will be even larger)
630 else return kClusterNotMatching; // Other clusters may match
631 }
c8d1f258 632 double dz2 = dz*dz;
f8832015 633 tol2 = (track->GetSigmaZ2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(lr))*
634 AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ()*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ(); // RS TOOPTIMIZE
c8d1f258 635 if (dz2>tol2) {
3dd9c283 636 if (goodCl) {printf("Loose good cl: dz2=%e > tol2=%e |",dz2,tol2); cl->Print();}
c8d1f258 637 return kClusterNotMatching; // Other clusters may match
638 }
f8832015 639 //
640 // check chi2
641 Double_t p[2]={cl->GetY(), cl->GetZ()};
642 Double_t cov[3]={cl->GetSigmaY2(), cl->GetSigmaYZ(), cl->GetSigmaZ2()};
643 double chi2 = track->GetPredictedChi2(p,cov);
c8d1f258 644 if (chi2>AliITSUReconstructor::GetRecoParam()->GetMaxTr2ClChi2(lr)) {
3dd9c283 645 if (goodCl) {
716ccba7 646 printf("Loose good cl: Chi2=%e > Chi2Max=%e |dy: %+.3e dz: %+.3e\n",
647 chi2,AliITSUReconstructor::GetRecoParam()->GetMaxTr2ClChi2(lr),dy,dz);
3dd9c283 648 track->Print("etp");
649 cl->Print("");
650 }
c8d1f258 651 return kClusterNotMatching;
652 }
f8832015 653 //
654 track = NewSeedFromPool(track); // input track will be reused, use its clone for updates
943e1898 655 if (!track->Update()) {
3dd9c283 656 if (goodCl) {printf("Loose good cl: Failed update |"); cl->Print();}
b8b59e05 657 MarkSeedFree(track);
c8d1f258 658 return kClusterNotMatching;
659 }
f8832015 660 track->SetChi2Cl(chi2);
661 track->SetLrClusterID(lr,clID);
662 cl->IncreaseClusterUsage();
663 //
716ccba7 664 track->SetFake(!goodCl);
665 //
666 AliInfo(Form("AddCl(%d) Cl%d lr:%d: dY:%+8.4f dZ:%+8.4f (MC: %5d %5d %5d) |Chi2=%f(%c)",
667 goodCl,clID,lr,dy,dz2,cl->GetLabel(0),cl->GetLabel(1),cl->GetLabel(2), chi2, track->IsFake() ? '-':'+'));
c8d1f258 668 //
f8832015 669 AddProlongationHypothesis(track,lr);
670 //
671 return kClusterMatching;
672}
c8d1f258 673
674//_________________________________________________________________________
675Bool_t AliITSUTrackerGlo::NeedToKill(AliITSUSeed *seed, Int_t flag)
676{
677 // check if the seed should not be discarded
678 const UShort_t kMask = 0xffff;
679 if (flag==kMissingCluster) {
680 int lastChecked = seed->GetLayerID();
681 UShort_t patt = seed->GetHitsPattern();
682 if (lastChecked) patt |= ~(kMask<<lastChecked); // not all layers were checked, complete unchecked once by potential hits
683 Bool_t seedOK = fTrCond.CheckPattern(patt);
684 return !seedOK;
685 }
686 return kTRUE;
687}
44785f3e 688
689//______________________________________________________________________________
690Bool_t AliITSUTrackerGlo::PropagateSeed(AliITSUSeed *seed, Double_t xToGo, Double_t mass, Double_t maxStep, Bool_t matCorr)
691{
692 // propagate seed to given x applying material correction if requested
693 const Double_t kEpsilon = 1e-5;
694 Double_t xpos = seed->GetX();
695 Int_t dir = (xpos<xToGo) ? 1:-1;
696 Double_t xyz0[3],xyz1[3],param[7];
697 //
8b16dbae 698 Bool_t updTime = dir>0 && seed->IsStartedTimeIntegral();
f497470c 699 if (matCorr || updTime) seed->GetXYZ(xyz1); //starting global position
44785f3e 700 while ( (xToGo-xpos)*dir > kEpsilon){
701 Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep);
702 Double_t x = xpos+step;
703 Double_t bz=GetBz(); // getting the local Bz
704 if (!seed->PropagateToX(x,bz)) return kFALSE;
8b16dbae 705 double ds = 0;
706 if (matCorr || updTime) {
44785f3e 707 xyz0[0]=xyz1[0]; // global pos at the beginning of step
708 xyz0[1]=xyz1[1];
709 xyz0[2]=xyz1[2];
710 seed->GetXYZ(xyz1); // // global pos at the end of step
8b16dbae 711 if (matCorr) {
712 MeanMaterialBudget(xyz0,xyz1,param);
713 Double_t xrho=param[0]*param[4], xx0=param[1];
714 if (dir>0) xrho = -xrho; // outward should be negative
715 if (!seed->ApplyMaterialCorrection(xx0,xrho,mass,kFALSE)) return kFALSE;
716 ds = param[4];
717 }
718 else { // matCorr is not requested but time integral is
719 double d0 = xyz1[0]-xyz0[0];
720 double d1 = xyz1[1]-xyz0[1];
721 double d2 = xyz1[2]-xyz0[2];
722 ds = TMath::Sqrt(d0*d0+d1*d1+d2*d2);
723 }
44785f3e 724 }
8b16dbae 725 if (updTime) seed->AddTimeStep(ds);
44785f3e 726 xpos = seed->GetX();
727 }
728 return kTRUE;
729}
716ccba7 730
3e4e3c23 731//______________________________________________________________________________
732Bool_t AliITSUTrackerGlo::PropagateSeed(AliExternalTrackParam *seed, Double_t xToGo, Double_t mass, Double_t maxStep, Bool_t matCorr)
733{
734 // propagate seed to given x applying material correction if requested
735 const Double_t kEpsilon = 1e-5;
736 Double_t xpos = seed->GetX();
737 Int_t dir = (xpos<xToGo) ? 1:-1;
738 Double_t xyz0[3],xyz1[3],param[7];
739 //
740 Bool_t updTime = dir>0 && seed->IsStartedTimeIntegral();
741 if (matCorr || updTime) seed->GetXYZ(xyz1); //starting global position
742 while ( (xToGo-xpos)*dir > kEpsilon){
743 Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep);
744 Double_t x = xpos+step;
745 Double_t bz=GetBz(); // getting the local Bz
746 if (!seed->PropagateTo(x,bz)) return kFALSE;
747 double ds = 0;
748 if (matCorr || updTime) {
749 xyz0[0]=xyz1[0]; // global pos at the beginning of step
750 xyz0[1]=xyz1[1];
751 xyz0[2]=xyz1[2];
752 seed->GetXYZ(xyz1); // // global pos at the end of step
753 //
754 if (matCorr) {
755 MeanMaterialBudget(xyz0,xyz1,param);
756 Double_t xrho=param[0]*param[4], xx0=param[1];
757 if (dir>0) xrho = -xrho; // outward should be negative
758 if (!seed->CorrectForMeanMaterial(xx0,xrho,mass)) return kFALSE;
759 ds = param[4];
760 }
761 else { // matCorr is not requested but time integral is
762 double d0 = xyz1[0]-xyz0[0];
763 double d1 = xyz1[1]-xyz0[1];
764 double d2 = xyz1[2]-xyz0[2];
765 ds = TMath::Sqrt(d0*d0+d1*d1+d2*d2);
766 }
767 }
768 if (updTime) seed->AddTimeStep(ds);
769 //
770 xpos = seed->GetX();
771 }
772 return kTRUE;
773}
774
716ccba7 775//______________________________________________________________________________
776void AliITSUTrackerGlo::SaveCurrentTrackHypotheses()
777{
778 // RS: shall we clean up killed seeds?
779 fCurrHyp = 0;
780 // TODO
781
782}
3e4e3c23 783
784//______________________________________________________________________________
785void AliITSUTrackerGlo::FinalizeHypotheses()
786{
787 // select winner for each hypothesis, remove cl. sharing conflicts
788 AliInfo("TODO");
789 //
790 int nh = fHypStore.GetEntriesFast();
791 for (int ih=0;ih<nh;ih++) {
792 AliITSUTrackHyp* hyp = (AliITSUTrackHyp*) fHypStore.UncheckedAt(ih);
793 if (!hyp) continue;
c51c3124 794 hyp->DefineWinner(); // TODO
795 UpdateESDTrack(hyp);
3e4e3c23 796 }
797
798}
c51c3124 799
800//______________________________________________________________________________
801void AliITSUTrackerGlo::UpdateESDTrack(AliITSUTrackHyp* hyp)
802{
803 // update ESD track with current best hypothesis
804 AliESDtrack* esdTr = hyp->GetESDTrack();
805 if (!esdTr) return;
806 AliITSUSeed* win = hyp->GetWinner();
807 if (!win) return;
808 esdTr->UpdateTrackParams(hyp,AliESDtrack::kITSin);
809 //
810 // transfer module indices
811 // TODO
812}
813
814//______________________________________________________________________________
815Bool_t AliITSUTrackerGlo::RefitTrack(AliITSUTrackHyp* trc, Double_t rDest)
816{
817 // refit track till radius rDest
8b16dbae 818 AliITSUTrackHyp tmpTr;
819 //
c51c3124 820 double rCurr = Sqrt(trc->GetX()*trc->GetX() + trc->GetY()*trc->GetY());
821 int dir,lrStart,lrStop;
822 //
8b16dbae 823 dir = rCurr<rDest ? 1 : -1;
824 lrStart = fITS->FindFirstLayerID(rCurr,dir);
825 lrStop = fITS->FindLastLayerID(rDest,dir);
e2d2481c 826 printf("Refit %d: Lr:%d (%f) -> Lr:%d (%f)\n",dir,lrStart,rCurr, lrStop,rDest);
827 printf("Before refit: "); trc->AliExternalTrackParam::Print();
8b16dbae 828 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));
829 //
830 trc->FetchClusterInfo(fClInfo);
831 fCurrMass = trc->GetMass();
832 tmpTr.AliKalmanTrack::operator=(*trc);
833 tmpTr.SetChi2(0);
834 int iclLr[2],nclLr;
c51c3124 835 //
836 for (int ilr=lrStart;ilr!=lrStop;ilr+=dir) {
837 AliITSURecoLayer* lr = fITS->GetLayer(ilr);
838 if ( dir*(rCurr-lr->GetR(dir))>0) continue; // this layer is already passed
8b16dbae 839 int ilrA2,ilrA = lr->GetActiveID();
840 // passive layer or active w/o hits will be traversed on the way to next cluster
841 if (!lr->IsActive() || fClInfo[ilrA2=(ilrA<<1)]<0) continue;
842 //
e2d2481c 843 if (ilr!=lrStart && !TransportToLayer(&tmpTr,lrStart,ilr)) {
844 printf("Failed to transport %d -> %d\n",lrStart,ilr);
845 return kFALSE; // go to the entrance to the layer
846 }
8b16dbae 847 lrStart = ilr;
848 //
849 // select the order in which possible 2 clusters (in case of the overlap) will be traversed and fitted
850 nclLr=0;
851 if (dir>0) { // clusters are stored in increasing radius order
852 iclLr[nclLr++]=fClInfo[ilrA2++];
853 if (fClInfo[ilrA2]>=0) iclLr[nclLr++]=fClInfo[ilrA2];
854 }
855 else {
856 if ( fClInfo[ilrA2+1]>=0 ) iclLr[nclLr++]=fClInfo[ilrA2+1];
857 iclLr[nclLr++]=fClInfo[ilrA2];
858 }
859 //
860 for (int icl=0;icl<nclLr;icl++) {
861 AliITSUClusterPix* clus = (AliITSUClusterPix*)lr->GetCluster(iclLr[icl]);
862 AliITSURecoSens* sens = lr->GetSensorFromID(clus->GetVolumeId());
863 if (!tmpTr.Rotate(sens->GetPhiTF())) return kFALSE;
e2d2481c 864 printf("Refit cl:%d on lr %d Need to go %.4f -> %.4f\n",icl,ilrA,tmpTr.GetX(),sens->GetXTF()+clus->GetX());
8b16dbae 865 if (!PropagateSeed(&tmpTr,sens->GetXTF()+clus->GetX(),fCurrMass)) return kFALSE;
866 if (!tmpTr.Update(clus)) return kFALSE;
e2d2481c 867 printf("AfterRefit: "); tmpTr.AliExternalTrackParam::Print();
8b16dbae 868 }
c51c3124 869 //
870 }
8b16dbae 871 // All clusters were succesfully fitted. Even if the track does not reach rDest, this is enough to validate it.
872 // Still, try to go as close as possible to rDest.
873 //
874 if (lrStart!=lrStop) {
e2d2481c 875 printf("Going to last layer %d -> %d\n",lrStart,lrStop);
876 if (!TransportToLayer(&tmpTr,lrStart,lrStop)) return kTRUE;
877 if (!GoToExitFromLayer(&tmpTr,fITS->GetLayer(lrStop),dir)) return kFALSE; // go till the exit from layer
878 //
879 printf("On exit from last layer\n");
880 tmpTr.AliExternalTrackParam::Print();
881 // go to the destination radius
882 if (!tmpTr.GetXatLabR(rDest,rDest,GetBz(),dir)) return kTRUE;
883 if (!PropagateSeed(&tmpTr,rDest,fCurrMass, 100, kFALSE)) return kTRUE;
8b16dbae 884 }
885 trc->AliKalmanTrack::operator=(tmpTr);
e2d2481c 886 printf("After refit (now at lr %d): ",lrStart); trc->AliExternalTrackParam::Print();
8b16dbae 887 return kTRUE;
c51c3124 888}
dd2117a2 889
890//__________________________________________________________________
891void AliITSUTrackerGlo::CookMCLabel(AliITSUTrackHyp* hyp)
892{
893 // build MC label
894 //
895 const int kMaxLbPerCl = 3;
896 int lbID[kMaxLayers*6],lbStat[kMaxLayers*6];
897 Int_t lr,nLab=0,nCl=0;
898 AliITSUSeed *seed = hyp->GetWinner();
899 while(seed) {
900 int clID = seed->GetLrCluster(lr);
901 if (clID>=0) {
902 AliCluster *cl = fITS->GetLayerActive(lr)->GetCluster(clID);
903 nCl++;
904 for (int imc=0;imc<kMaxLbPerCl;imc++) { // labels within single cluster
905 int trLb = cl->GetLabel(imc);
906 if (imc<0) break;
907 // search this mc track in already accounted ones
908 int iLab;
909 for (iLab=0;iLab<nLab;iLab++) if (lbID[iLab]==trLb) break;
910 if (iLab<nLab) lbStat[iLab]++;
911 else {
912 lbID[nLab] = trLb;
913 lbStat[nLab++] = 1;
914 }
915 } // loop over given cluster's labels
916 }
917 seed = (AliITSUSeed*)seed->GetParent();
918 } // loop over clusters
919 //
920 if (nCl) {
921 int maxLab=0,nTPCok=0;
922 AliESDtrack* esdTr = hyp->GetESDTrack();
923 int tpcLab = esdTr ? Abs(esdTr->GetTPCLabel()) : -kDummyLabel;
924 for (int ilb=nLab;ilb--;) {
925 int st = lbStat[ilb];
926 if (lbStat[maxLab]<st) maxLab=ilb;
927 if (tpcLab==lbID[ilb]) nTPCok += st;
928 }
929 hyp->SetFakeRatio(1.-float(nTPCok)/nCl);
930 hyp->SetLabel( nTPCok==nCl ? tpcLab : -tpcLab);
931 hyp->SetITSLabel( lbStat[maxLab]==nCl ? lbStat[maxLab] : -lbStat[maxLab]); // winner label
932 return;
933 }
934 //
935 hyp->SetFakeRatio(-1.);
936 hyp->SetLabel( kDummyLabel );
937 hyp->SetITSLabel( kDummyLabel );
938}