using namespace TMath;
+
+//----------------- tmp stuff -----------------
+
ClassImp(AliITSUTrackerGlo)
+
+const Double_t AliITSUTrackerGlo::fgkToler = 1e-6;// tolerance for layer on-surface check
+
+
//_________________________________________________________________________
AliITSUTrackerGlo::AliITSUTrackerGlo(AliITSUReconstructor* rec)
: fReconstructor(rec)
,fITS(0)
+ ,fCurrESDtrack(0)
,fCurrMass(kPionMass)
- ,fSeedsLr(0)
+ ,fHypStore(100)
+ ,fCurrHyp(0)
,fSeedsPool("AliITSUSeed",0)
+ ,fFreeSeedsID(0)
+ ,fNFreeSeeds(0)
+ ,fLastSeedID(0)
+ ,fTrCond()
+ ,fTrackPhase(-1)
+ ,fClInfo(0)
{
// Default constructor
if (rec) Init(rec);
// Default destructor
//
delete fITS;
- delete[] fSeedsLr;
+ delete[] fClInfo;
//
}
// init with external reconstructor
//
fITS = new AliITSURecoDet(rec->GetGeom(),"ITSURecoInterface");
- for (int ilr=fITS->GetNLayersActive();ilr--;) {
+ int nLr = fITS->GetNLayersActive();
+ fClInfo = new Int_t[nLr<<1];
+ for (int ilr=nLr;ilr--;) {
fITS->GetLayerActive(ilr)->SetClusters(rec->GetClusters(ilr));
}
//
fSeedsPool.ExpandCreateFast(1000); // RS TOCHECK
- int n = fITS->GetNLayersActive()+1;
- fSeedsLr = new TObjArray[n];
+ fFreeSeedsID.Set(1000);
//
-
+ fTrCond.SetNLayers(fITS->GetNLayersActive());
+ fTrCond.AddNewCondition(5);
+ fTrCond.AddGroupPattern( (0x1<<0)|(0x1<<1) );
+ fTrCond.AddGroupPattern( (0x1<<3)|(0x1<<4) );
+ fTrCond.AddGroupPattern( (0x1<<5)|(0x1<<6) );
+ //
+ fTrCond.AddNewCondition(5);
+ fTrCond.AddGroupPattern( (0x1<<0)|(0x1<<2) );
+ fTrCond.AddGroupPattern( (0x1<<3)|(0x1<<4) );
+ fTrCond.AddGroupPattern( (0x1<<5)|(0x1<<6) );
+ //
+ fTrCond.AddNewCondition(5);
+ fTrCond.AddGroupPattern( (0x1<<1)|(0x1<<2) );
+ fTrCond.AddGroupPattern( (0x1<<3)|(0x1<<4) );
+ fTrCond.AddGroupPattern( (0x1<<5)|(0x1<<6) );
+ //
+ printf("Tracking Conditions: ");
+ fTrCond.Print();
}
//_________________________________________________________________________
{
//
//
+ SetTrackingPhase(kClus2Tracks);
+ ResetSeedsPool();
+ int nTrESD = esdEv->GetNumberOfTracks();
+ AliInfo(Form("Will try to find prolongations for %d tracks",nTrESD));
+ AliITSUReconstructor::GetRecoParam()->Print();
+ fHypStore.Delete();
+ if (fHypStore.GetSize()<nTrESD) fHypStore.Expand(nTrESD+100);
+ //
fITS->ProcessClusters();
// select ESD tracks to propagate
- int nTrESD = esdEv->GetNumberOfTracks();
for (int itr=0;itr<nTrESD;itr++) {
AliESDtrack *esdTr = esdEv->GetTrack(itr);
- FindTrack(esdTr);
+ AliInfo(Form("Processing track %d | MCLabel: %d",itr,esdTr->GetTPCLabel()));
+ if (!NeedToProlong(esdTr)) continue; // are we interested in this track?
+ FindTrack(esdTr, itr);
}
-
+ //
+ AliInfo(Form("SeedsPool: %d, BookedUpTo: %d, free: %d",fSeedsPool.GetSize(),fSeedsPool.GetEntriesFast(),fNFreeSeeds));
+ fHypStore.Print();
+ FinalizeHypotheses();
+ //
return 0;
}
//_________________________________________________________________________
-Int_t AliITSUTrackerGlo::PropagateBack(AliESDEvent * /*event*/)
+Int_t AliITSUTrackerGlo::PropagateBack(AliESDEvent *esdEv)
{
//
- // To be implemented
+ // Do outward fits in ITS
+ //
+ SetTrackingPhase(kPropBack);
+ int nTrESD = esdEv->GetNumberOfTracks();
+ AliInfo(Form("Will propagate back %d tracks",nTrESD));
+ //
+ double bz0 = GetBz();
+ Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
+ AliITSUTrackHyp dummyTr,*currTr=0;
+ const double kWatchStep=10.; // for larger steps watch arc vs segment difference
+ Double_t times[AliPID::kSPECIES];
+ //
+ //
+ for (int itr=0;itr<nTrESD;itr++) {
+ AliESDtrack *esdTr = esdEv->GetTrack(itr);
+ // Start time integral and add distance from current position to vertex
+ if (esdTr->IsOn(AliESDtrack::kITSout)) continue; // already done
+ //
+ esdTr->GetXYZ(xyzTrk);
+ Double_t dst = 0.; // set initial track lenght, tof
+ {
+ double dxs = xyzTrk[0] - xyzVtx[0];
+ double dys = xyzTrk[1] - xyzVtx[1];
+ double dzs = xyzTrk[2] - xyzVtx[2];
+ // RS: for large segment steps d use approximation of cicrular arc s by
+ // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2)
+ // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature)
+ // Hence s^2/d^2 = (1+1/6 p^2)^2
+ dst = dxs*dxs + dys*dys;
+ if (dst > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor
+ double crv = Abs(esdTr->GetC(bz0));
+ double fcarc = 1.+crv*crv*dst/6.;
+ dst *= fcarc*fcarc;
+ }
+ dst += dzs*dzs;
+ dst = Sqrt(dst);
+ }
+ //
+ esdTr->SetStatus(AliESDtrack::kTIME);
+ //
+ if (!esdTr->IsOn(AliESDtrack::kITSin)) { // case of tracks w/o ITS prolongation: just set the time integration
+ dummyTr.AliExternalTrackParam::operator=(*esdTr);
+ dummyTr.StartTimeIntegral();
+ dummyTr.AddTimeStep(dst);
+ dummyTr.GetIntegratedTimes(times);
+ esdTr->SetIntegratedTimes(times);
+ esdTr->SetIntegratedLength(dummyTr.GetIntegratedLength());
+ continue;
+ }
+ //
+ currTr = GetTrackHyp(itr);
+ currTr->StartTimeIntegral();
+ currTr->AddTimeStep(dst);
+ printf("Before resetCov: "); currTr->AliExternalTrackParam::Print();
+ currTr->ResetCovariance(10000);
+ if (RefitTrack(currTr,fITS->GetRMax())) { // propagate to exit from the ITS/TPC screen
+ UpdateESDTrack(currTr,AliESDtrack::kITSout);
+ }
+ else {
+ AliInfo(Form("Refit Failed for track %d",itr));
+ }
+ //
+ }
//
-
- Info("PropagateBack","To be implemented");
return 0;
}
//_________________________________________________________________________
-Int_t AliITSUTrackerGlo::RefitInward(AliESDEvent * /*event*/)
+Int_t AliITSUTrackerGlo::RefitInward(AliESDEvent *esdEv)
{
//
- // To be implemented
+ // refit the tracks inward, using current cov.matrix
+ //
+ SetTrackingPhase(kRefitInw);
+ Int_t nTrESD = esdEv->GetNumberOfTracks();
+ AliInfo(Form("Will refit inward %d tracks",nTrESD));
+ AliITSUTrackHyp *currTr=0;
+ //
+ for (int itr=0;itr<nTrESD;itr++) {
+ AliESDtrack *esdTr = esdEv->GetTrack(itr);
+ // Start time integral and add distance from current position to vertex
+ UInt_t trStat = esdTr->GetStatus();
+ if ( !(trStat & AliESDtrack::kITSout) ) continue;
+ if ( trStat & AliESDtrack::kITSrefit ) continue; // already done
+ if ( (trStat & AliESDtrack::kTPCout) && !(trStat & AliESDtrack::kTPCrefit) ) continue;
+ //
+ currTr = GetTrackHyp(itr);
+ currTr->AliExternalTrackParam::operator=(*esdTr); // fetch current ESDtrack kinematics
+ if (RefitTrack(currTr,fITS->GetRMin())) { // propagate up to inside radius of the beam pipe
+ UpdateESDTrack(currTr,AliESDtrack::kITSrefit);
+ }
+ else {
+ AliInfo(Form("Refit Failed for track %d",itr));
+ }
+ }
//
-
- Info("RefitInward","To be implemented");
return 0;
}
}
//_________________________________________________________________________
-void AliITSUTrackerGlo::FindTrack(AliESDtrack* esdTr)
+void AliITSUTrackerGlo::FindTrack(AliESDtrack* esdTr, Int_t esdID)
{
// find prolongaion candidates finding for single seed
//
- const double kTolerX = 5e-4;
+ AliITSUSeed seedUC; // copy of the seed from the upper layer
+ AliITSUSeed seedT; // transient seed between the seedUC and new prolongation hypothesis
//
- if (!NeedToProlong(esdTr)) return; // are we interested in this track?
- if (!InitSeed(esdTr)) return; // initialize prolongations hypotheses tree
+ if (!InitHypothesis(esdTr,esdID)) return; // initialize prolongations hypotheses tree
+ //
+ AliITSURecoSens *hitSens[AliITSURecoSens::kNNeighbors+1];
//
- AliITSURecoSens *hitSens[AliITSURecoSens::kNNeighbors];
- AliITSUSeed seed0;
TObjArray clArr; // container for transfer of clusters matching to seed
//
- for (int ila=fITS->GetNLayersActive();ila--;) {
+ int nLrActive = fITS->GetNLayersActive();
+ for (int ila=nLrActive;ila--;) {
int ilaUp = ila+1; // prolong seeds from layer above
- int nSeedsUp = GetNSeeds(ilaUp);
+ //
+ // for the outermost layer the seed is created from the ESD track
+ int nSeedsUp = (ilaUp==nLrActive) ? 1 : fCurrHyp->GetNSeeds(ilaUp);
+ //
for (int isd=0;isd<nSeedsUp;isd++) {
- AliITSUSeed* seedU = GetSeed(ilaUp,isd); // seed on prev.active layer to prolong
- seed0 = *seedU;
+ AliITSUSeed* seedU;
+ if (ilaUp==nLrActive) {
+ seedU = 0;
+ seedUC.InitFromESDTrack(esdTr);
+ }
+ else {
+ seedU = fCurrHyp->GetSeed(ilaUp,isd); // seed on prev.active layer to prolong
+ seedUC = *seedU; // its copy will be prolonged
+ seedUC.SetParent(seedU);
+ }
+ seedUC.ResetFMatrix(); // reset the matrix for propagation to next layer
// go till next active layer
- if (!TransportToLayer(&seed0, fITS->GetLrIDActive(ilaUp), fITS->GetLrIDActive(ila)) ) {
+ AliInfo(Form("working on Lr:%d Seed:%d of %d",ila,isd,nSeedsUp));
+ if (!TransportToLayer(&seedUC, fITS->GetLrIDActive(ilaUp), fITS->GetLrIDActive(ila)) ) {
//
+ AliInfo("Transport failed");
// Check if the seed satisfies to track definition
- if (NeedToKill(&seed0,kTransportFailed)) KillSeed(ilaUp,isd);
+ if (NeedToKill(&seedUC,kTransportFailed) && seedU) KillSeed(seedU,kTRUE);
continue; // RS TODO: decide what to do with tracks stopped on higher layers w/o killing
}
AliITSURecoLayer* lrA = fITS->GetLayerActive(ila);
- if (!GetRoadWidth(&seed0, ila)) { // failed to find road width on the layer
- if (NeedToKill(&seed0,kRWCheckFailed)) KillSeed(ilaUp,isd);
+ if (!GetRoadWidth(&seedUC, ila)) { // failed to find road width on the layer
+ if (NeedToKill(&seedUC,kRWCheckFailed) && seedU) KillSeed(seedU,kTRUE);
continue;
}
- int nsens = lrA->FindSensors(&fTrImpData[kTrPhi0], hitSens); // find detectors which may be hit by the track (max 4)
+ int nsens = lrA->FindSensors(&fTrImpData[kTrPhi0], hitSens); // find detectors which may be hit by the track
+ AliInfo(Form("Will check %d sensors on lr:%d ",nsens,ila));
//
+ double bz = GetBz();
for (int isn=nsens;isn--;) {
+ seedT = seedUC;
AliITSURecoSens* sens = hitSens[isn];
- AliITSUSeed* seedT = NewSeedFromPool(&seed0);
- seedT->SetParent(seedU);
- if (!seedT->Propagate(sens->GetPhiTF(),sens->GetXTF(),GetBz())) {DeleteLastSeedFromPool(); continue;}
- int clID = sens->GetFirstClusterId();
+ //
+ // We need to propagate the seed to sensor on lrA staying the frame of the sensor from prev.layer,
+ // since the transport matrix should be defined in this frame.
+ double xs; // X in the TF of current seed, corresponding to intersection with sensor plane
+ if (!seedT.GetTrackingXAtXAlpha(sens->GetXTF(),sens->GetPhiTF(),bz, xs)) continue;
+ if (!PropagateSeed(&seedT,xs,fCurrMass)) continue;
+ // if (!seedT.PropagateToX(xs,bz)) continue;
+ // if (!seedT.Rotate(sens->GetPhiTF())) continue;
+ if (!seedT.RotateToAlpha(sens->GetPhiTF())) continue;
+ //
+ int clID0 = sens->GetFirstClusterId();
for (int icl=sens->GetNClusters();icl--;) {
- AliITSUClusterPix* cl = (AliITSUClusterPix*)lrA->GetCluster(clID); // cluster data is in the tracking frame
- if (TMath::Abs(cl->GetX())>kTolerX) { // if due to the misalingment X is large, propagate track only
- if (!seedT->PropagateParamOnlyTo(seedT->GetX()+cl->GetX(),GetBz())) {DeleteLastSeedFromPool(); continue;}
- }
-
-
+ int res = CheckCluster(&seedT,ila,clID0+icl);
+ //
+ if (res==kStopSearchOnSensor) break; // stop looking on this sensor
+ if (res==kClusterNotMatching) continue; // cluster does not match
+ // cluster is matching and it was added to the hypotheses tree
}
}
-
+ // cluster search is done. Do we need ta have a version of this seed skipping current layer
+ seedT.SetLr(ila);
+ if (!NeedToKill(&seedT,kMissingCluster)) {
+ AliITSUSeed* seedSkp = NewSeedFromPool(&seedT);
+ double penalty = -AliITSUReconstructor::GetRecoParam()->GetMissPenalty(ila);
+ // to do: make penalty to account for probability to miss the cluster for good reason
+ seedSkp->SetChi2Cl(penalty);
+ AddProlongationHypothesis(seedSkp,ila);
+ }
+ }
+ ((TObjArray*)fCurrHyp->GetLayerSeeds(ila))->Sort();
+ printf(">>> All hypotheses on lr %d: \n",ila);
+ for (int ih=0;ih<fCurrHyp->GetNSeeds(ila);ih++) {
+ printf(" #%3d ",ih); fCurrHyp->GetSeed(ila,ih)->Print();
+ //
+ /*
+ if (ila!=0) continue;
+ double vecL[5] = {0};
+ double matL[15] = {0};
+ AliITSUSeed* sp = fCurrHyp->GetSeed(ila,ih);
+ while(sp->GetParent()) {
+ sp->Smooth(vecL,matL);
+ if (sp->GetLayerID()>=fITS->GetNLayersActive()-1) break;
+ sp = (AliITSUSeed*)sp->GetParent();
+ }
+ */
}
}
//
- ResetSeedTree();
+ SaveCurrentTrackHypotheses();
+ //
}
//_________________________________________________________________________
-Bool_t AliITSUTrackerGlo::InitSeed(AliESDtrack *esdTr)
+Bool_t AliITSUTrackerGlo::InitHypothesis(AliESDtrack *esdTr, Int_t esdID)
{
// init prolongaion candidates finding for single seed
+ fCurrHyp = GetTrackHyp(esdID);
+ if (fCurrHyp) return kTRUE;
+ //
fCurrMass = esdTr->GetMass();
+ fCurrESDtrack = esdTr;
if (fCurrMass<kPionMass*0.9) fCurrMass = kPionMass; // don't trust to mu, e identification from TPCin
//
- AliITSUSeed* seed = NewSeedFromPool();
- seed->AliExternalTrackParam::operator=(*esdTr);
- seed->SetParent(esdTr);
- fSeedsLr[fITS->GetNLayersActive()].AddLast(seed);
+ fCurrHyp = new AliITSUTrackHyp(fITS->GetNLayersActive());
+ fCurrHyp->SetESDTrack(esdTr);
+ fCurrHyp->SetUniqueID(esdID);
+ fCurrHyp->SetMass(fCurrMass);
+ SetTrackHyp(fCurrHyp,esdID);
+ //
return kTRUE;
// TO DO
}
//_________________________________________________________________________
-void AliITSUTrackerGlo::ResetSeedTree()
+Bool_t AliITSUTrackerGlo::TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo)
{
- // reset current hypotheses tree
- for (int i=fITS->GetNLayersActive()+1;i--;) fSeedsLr[fITS->GetNLayersActive()].Clear();
+ // transport seed from layerFrom to the entrance of layerTo
+ //
+ //
+ if (lTo==lFrom) AliFatal(Form("was called with lFrom=%d lTo=%d",lFrom,lTo));
+ //
+ int dir = lTo > lFrom ? 1:-1;
+ AliITSURecoLayer* lrFr = fITS->GetLayer(lFrom); // this can be 0 when extrapolation from TPC to ITS is requested
+ Bool_t checkFirst = kTRUE;
+ while(lFrom!=lTo) {
+ if (lrFr) {
+ if (!GoToExitFromLayer(seed,lrFr,dir,checkFirst)) return kFALSE; // go till the end of current layer
+ checkFirst = kFALSE;
+ }
+ AliITSURecoLayer* lrTo = fITS->GetLayer( (lFrom+=dir) );
+ if (!lrTo) AliFatal(Form("Layer %d does not exist",lFrom));
+ //
+ // go the entrance of the layer, assuming no materials in between
+ double xToGo = lrTo->GetR(-dir);
+ if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
+ if (!PropagateSeed(seed,xToGo,fCurrMass,100, kFALSE )) return kFALSE;
+ lrFr = lrTo;
+ }
+ return kTRUE;
+ //
}
//_________________________________________________________________________
-Bool_t AliITSUTrackerGlo::TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo)
+Bool_t AliITSUTrackerGlo::TransportToLayer(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo)
{
- // transport seed from layerFrom to the entrance of layerTo
+ // transport track from layerFrom to the entrance of layerTo
//
- const double kToler = 1e-6; // tolerance for layer on-surface check
+ if (lTo==lFrom) AliFatal(Form("was called with lFrom=%d lTo=%d",lFrom,lTo));
//
int dir = lTo > lFrom ? 1:-1;
AliITSURecoLayer* lrFr = fITS->GetLayer(lFrom); // this can be 0 when extrapolation from TPC to ITS is requested
Bool_t checkFirst = kTRUE;
while(lFrom!=lTo) {
- double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
if (lrFr) {
- Bool_t doLayer = kTRUE;
- double xToGo = dir>0 ? lrFr->GetRMax() : lrFr->GetRMin();
- if (checkFirst) { // do we need to track till the surface of the current layer ?
- checkFirst = kFALSE;
- if (dir>0) { if (curR2-xToGo*xToGo>kToler) doLayer = kFALSE; } // on the surface or outside of the layer
- else if (dir<0) { if (xToGo*xToGo-curR2>kToler) doLayer = kFALSE; } // on the surface or outside of the layer
- }
- if (doLayer) {
- if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
- // go via layer to its boundary, applying material correction.
- if (!PropagateTrackTo(seed,xToGo,fCurrMass, lrFr->GetMaxStep(), kFALSE, -1, 0, kTRUE)) return kFALSE;
- }
+ if (!GoToExitFromLayer(seed,lrFr,dir,checkFirst)) return kFALSE; // go till the end of current layer
+ checkFirst = kFALSE;
}
AliITSURecoLayer* lrTo = fITS->GetLayer( (lFrom+=dir) );
if (!lrTo) AliFatal(Form("Layer %d does not exist",lFrom));
//
- // go the entrance of the layer, assuming no materials in between
- double xToGo = dir>0 ? lrTo->GetRMin() : lrTo->GetRMax();
- if (seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
- if (!seed->PropagateTo(xToGo, GetBz())) return kFALSE; // RS: do we need BxByBz?
+ if (!GoToExitFromLayer(seed,lrTo,dir)) return kFALSE; // go the entrance of the layer, assuming no materials in between
lrFr = lrTo;
}
return kTRUE;
//
}
+//_________________________________________________________________________
+Bool_t AliITSUTrackerGlo::GoToExitFromLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
+{
+ // go to the exit from lr in direction dir, applying material corrections in steps specific for this layer
+ // If check is requested, do this only provided the track has not exited the layer already
+ double xToGo = lr->GetR(dir);
+ if (check) { // do we need to track till the surface of the current layer ?
+ double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
+ // AliInfo(Form(" dir:%d Cur: %e Tgt: %e",dir,Sqrt(curR2),xToGo));
+ if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // on the surface or outside of the layer
+ else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // on the surface or outside of the layer
+ }
+ if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
+ // go via layer to its boundary, applying material correction.
+ if (!PropagateSeed(seed,xToGo,fCurrMass, lr->GetMaxStep())) return kFALSE;
+ //
+ return kTRUE;
+ //
+}
+
+//_________________________________________________________________________
+Bool_t AliITSUTrackerGlo::GoToExitFromLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
+{
+ // go to the exit from lr in direction dir, applying material corrections in steps specific for this layer
+ // If check is requested, do this only provided the track has not exited the layer already
+ double xToGo = lr->GetR(dir);
+ if (check) { // do we need to track till the surface of the current layer ?
+ double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
+ if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // on the surface or outside of the layer
+ else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // on the surface or outside of the layer
+ }
+ if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
+ // go via layer to its boundary, applying material correction.
+ if (!PropagateSeed(seed,xToGo,fCurrMass, lr->GetMaxStep())) return kFALSE;
+ //
+ return kTRUE;
+ //
+}
+
+
+//_________________________________________________________________________
+Bool_t AliITSUTrackerGlo::GoToEntranceToLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
+{
+ // go to the entrance of lr in direction dir, w/o applying material corrections.
+ // If check is requested, do this only provided the track did not reach the layer already
+ double xToGo = lr->GetR(-dir);
+ if (check) { // do we need to track till the surface of the current layer ?
+ double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
+ if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // already passed
+ else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // already passed
+ }
+ if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
+ // go via layer to its boundary, applying material correction.
+ if (!PropagateSeed(seed,xToGo,fCurrMass, 100, kFALSE)) return kFALSE;
+ return kTRUE;
+ //
+}
+
+//_________________________________________________________________________
+Bool_t AliITSUTrackerGlo::GoToEntranceToLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check)
+{
+ // go to the entrance of lr in direction dir, w/o applying material corrections.
+ // If check is requested, do this only provided the track did not reach the layer already
+ double xToGo = lr->GetR(-dir);
+ if (check) { // do we need to track till the surface of the current layer ?
+ double curR2 = seed->GetX()*seed->GetX() + seed->GetY()*seed->GetY(); // current radius
+ if (dir>0) { if (curR2-xToGo*xToGo>fgkToler) return kTRUE; } // already passed
+ else if (dir<0) { if (xToGo*xToGo-curR2>fgkToler) return kTRUE; } // already passed
+ }
+ if (!seed->GetXatLabR(xToGo,xToGo,GetBz(),dir)) return kFALSE;
+ // go via layer to its boundary, applying material correction.
+ if (!PropagateSeed(seed,xToGo,fCurrMass, 100, kFALSE)) return kFALSE;
+ return kTRUE;
+ //
+}
+
//_________________________________________________________________________
Bool_t AliITSUTrackerGlo::GetRoadWidth(AliITSUSeed* seed, int ilrA)
{
double bz = GetBz();
AliITSURecoLayer* lrA = fITS->GetLayerActive(ilrA);
seed->GetXYZ(&fTrImpData[kTrXIn]); // lab position at the entrance from above
+ static AliExternalTrackParam sc; // seed copy for manipalitions
+ sc = *seed;
//
fTrImpData[kTrPhiIn] = ATan2(fTrImpData[kTrYIn],fTrImpData[kTrXIn]);
- if (!seed->Rotate(fTrImpData[kTrPhiIn])) return kFALSE; // go to the frame of the entry point into the layer
+ if (!sc.Rotate(fTrImpData[kTrPhiIn])) return kFALSE; // go to the frame of the entry point into the layer
double dr = lrA->GetDR(); // approximate X dist at the inner radius
- if (!seed->GetXYZAt(seed->GetX()-dr, bz, fTrImpData + kTrXOut)) {
+ if (!sc.GetXYZAt(sc.GetX()-dr, bz, fTrImpData + kTrXOut)) {
// special case: track does not reach inner radius, might be tangential
- double r = seed->GetD(0,0,bz);
+ double r = sc.GetD(0,0,bz);
double x;
- if (!seed->GetXatLabR(r,x,bz,-1)) {
- AliError(Form("This should not happen: r=%f",r));
- seed->Print();
- return kFALSE;
+ if (!sc.GetXatLabR(r,x,bz,-1)) {
+ sc.Print();
+ AliFatal(Form("This should not happen: r=%f",r));
}
- dr = Abs(seed->GetX() - x);
- if (!seed->GetXYZAt(x, bz, fTrImpData + kTrXOut)) {
- AliError(Form("This should not happen: x=%f",x));
- seed->Print();
- return kFALSE;
+ dr = Abs(sc.GetX() - x);
+ if (!sc.GetXYZAt(x, bz, fTrImpData + kTrXOut)) {
+ sc.Print();
+ AliFatal(Form("This should not happen: x=%f",x));
}
}
//
fTrImpData[kTrPhiOut] = ATan2(fTrImpData[kTrYOut],fTrImpData[kTrXOut]);
- double sgy = seed->GetSigmaY2() + dr*dr*seed->GetSigmaSnp2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(ilrA);
- double sgz = seed->GetSigmaZ2() + dr*dr*seed->GetSigmaTgl2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(ilrA);
+ double sgy = sc.GetSigmaY2() + dr*dr*sc.GetSigmaSnp2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(ilrA);
+ double sgz = sc.GetSigmaZ2() + dr*dr*sc.GetSigmaTgl2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(ilrA);
sgy = Sqrt(sgy)*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY();
sgz = Sqrt(sgz)*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ();
fTrImpData[kTrPhi0] = 0.5*(fTrImpData[kTrPhiOut]+fTrImpData[kTrPhiIn]);
- fTrImpData[kTrZ0] = 0.5*(fTrImpData[kTrZOut]+fTrImpData[kTrPhiIn]);
+ fTrImpData[kTrZ0] = 0.5*(fTrImpData[kTrZOut]+fTrImpData[kTrZIn]);
fTrImpData[kTrDPhi] = 0.5*Abs(fTrImpData[kTrPhiOut]-fTrImpData[kTrPhiIn]) + sgy/lrA->GetR();
- fTrImpData[kTrDZ] = 0.5*Abs(fTrImpData[kTrZOut]-fTrImpData[kTrPhiIn]) + sgz;
+ fTrImpData[kTrDZ] = 0.5*Abs(fTrImpData[kTrZOut]-fTrImpData[kTrZIn]) + sgz;
//
return kTRUE;
}
+//________________________________________
+void AliITSUTrackerGlo::ResetSeedsPool()
+{
+ // mark all seeds in the pool as unused
+ AliInfo(Form("CurrentSize: %d, BookedUpTo: %d, free: %d",fSeedsPool.GetSize(),fSeedsPool.GetEntriesFast(),fNFreeSeeds));
+ fNFreeSeeds = 0;
+ fSeedsPool.Clear(); // seeds don't allocate memory
+}
+
+
+//________________________________________
+void AliITSUTrackerGlo::MarkSeedFree(AliITSUSeed *sd)
+{
+ // account that this seed is "deleted"
+ int id = sd->GetPoolID();
+ if (id<0) {
+ AliError(Form("Freeing of seed %p NOT from the pool is requested",sd));
+ return;
+ }
+ // AliInfo(Form("%d %p",id, seed));
+ fSeedsPool.RemoveAt(id);
+ if (fFreeSeedsID.GetSize()<=fNFreeSeeds) fFreeSeedsID.Set( 2*fNFreeSeeds + 100 );
+ fFreeSeedsID.GetArray()[fNFreeSeeds++] = id;
+}
+
+//_________________________________________________________________________
+Int_t AliITSUTrackerGlo::CheckCluster(AliITSUSeed* track, Int_t lr, Int_t clID)
+{
+ // Check if the cluster (in tracking frame!) is matching to track.
+ // The track must be already propagated to sensor tracking frame.
+ // Returns: kStopSearchOnSensor if the search on given sensor should be stopped,
+ // kClusterMatching if the cluster is matching
+ // kClusterMatching otherwise
+ //
+ const double kTolerX = 5e-4;
+ AliCluster *cl = fITS->GetLayerActive(lr)->GetCluster(clID);
+ //
+ Bool_t goodCl = kFALSE;
+ int currLabel = Abs(fCurrESDtrack->GetTPCLabel());
+ //
+ if (cl->GetLabel(0)>=0) {
+ for (int i=0;i<3;i++) if (cl->GetLabel(i)>=0 && cl->GetLabel(i)==currLabel) {goodCl = kTRUE; break;}
+ }
+ else goodCl = kTRUE;
+ //
+ if (TMath::Abs(cl->GetX())>kTolerX) { // if due to the misalingment X is large, propagate track only
+ if (!track->PropagateParamOnlyTo(track->GetX()+cl->GetX(),GetBz())) {
+ if (goodCl) {printf("Loose good cl: Failed propagation. |"); cl->Print();}
+ return kStopSearchOnSensor; // propagation failed, seedT is intact
+ }
+ }
+ double dy = cl->GetY()-track->GetY();
+ double dz = cl->GetZ()-track->GetZ();
+ //
+ double dy2 = dy*dy;
+ double tol2 = (track->GetSigmaY2() + AliITSUReconstructor::GetRecoParam()->GetSigmaY2(lr))*
+ AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY()*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadY(); // RS TOOPTIMIZE
+ if (dy2>tol2) { // the clusters are sorted in Z(col) then in Y(row).
+ if (goodCl) {printf("Loose good cl: dy2=%e > tol2=%e |",dy2,tol2); cl->Print();}
+ if (dy>0) return kStopSearchOnSensor; // No chance that other cluster of this sensor will match (all Y's will be even larger)
+ else return kClusterNotMatching; // Other clusters may match
+ }
+ double dz2 = dz*dz;
+ tol2 = (track->GetSigmaZ2() + AliITSUReconstructor::GetRecoParam()->GetSigmaZ2(lr))*
+ AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ()*AliITSUReconstructor::GetRecoParam()->GetNSigmaRoadZ(); // RS TOOPTIMIZE
+ if (dz2>tol2) {
+ if (goodCl) {printf("Loose good cl: dz2=%e > tol2=%e |",dz2,tol2); cl->Print();}
+ return kClusterNotMatching; // Other clusters may match
+ }
+ //
+ // check chi2
+ Double_t p[2]={cl->GetY(), cl->GetZ()};
+ Double_t cov[3]={cl->GetSigmaY2(), cl->GetSigmaYZ(), cl->GetSigmaZ2()};
+ double chi2 = track->GetPredictedChi2(p,cov);
+ if (chi2>AliITSUReconstructor::GetRecoParam()->GetMaxTr2ClChi2(lr)) {
+ if (goodCl) {
+ printf("Loose good cl: Chi2=%e > Chi2Max=%e |dy: %+.3e dz: %+.3e\n",
+ chi2,AliITSUReconstructor::GetRecoParam()->GetMaxTr2ClChi2(lr),dy,dz);
+ track->Print("etp");
+ cl->Print("");
+ }
+ return kClusterNotMatching;
+ }
+ //
+ track = NewSeedFromPool(track); // input track will be reused, use its clone for updates
+ if (!track->Update()) {
+ if (goodCl) {printf("Loose good cl: Failed update |"); cl->Print();}
+ MarkSeedFree(track);
+ return kClusterNotMatching;
+ }
+ track->SetChi2Cl(chi2);
+ track->SetLrClusterID(lr,clID);
+ cl->IncreaseClusterUsage();
+ //
+ track->SetFake(!goodCl);
+ //
+ AliInfo(Form("AddCl(%d) Cl%d lr:%d: dY:%+8.4f dZ:%+8.4f (MC: %5d %5d %5d) |Chi2=%f(%c)",
+ goodCl,clID,lr,dy,dz2,cl->GetLabel(0),cl->GetLabel(1),cl->GetLabel(2), chi2, track->IsFake() ? '-':'+'));
+ //
+ AddProlongationHypothesis(track,lr);
+ //
+ return kClusterMatching;
+}
+
//_________________________________________________________________________
-AliITSUSeed* AliITSUTrackerGlo::NewSeedFromPool(const AliITSUSeed* src)
+Bool_t AliITSUTrackerGlo::NeedToKill(AliITSUSeed *seed, Int_t flag)
+{
+ // check if the seed should not be discarded
+ const UShort_t kMask = 0xffff;
+ if (flag==kMissingCluster) {
+ int lastChecked = seed->GetLayerID();
+ UShort_t patt = seed->GetHitsPattern();
+ if (lastChecked) patt |= ~(kMask<<lastChecked); // not all layers were checked, complete unchecked once by potential hits
+ Bool_t seedOK = fTrCond.CheckPattern(patt);
+ return !seedOK;
+ }
+ return kTRUE;
+}
+
+//______________________________________________________________________________
+Bool_t AliITSUTrackerGlo::PropagateSeed(AliITSUSeed *seed, Double_t xToGo, Double_t mass, Double_t maxStep, Bool_t matCorr)
+{
+ // propagate seed to given x applying material correction if requested
+ const Double_t kEpsilon = 1e-5;
+ Double_t xpos = seed->GetX();
+ Int_t dir = (xpos<xToGo) ? 1:-1;
+ Double_t xyz0[3],xyz1[3],param[7];
+ //
+ Bool_t updTime = dir>0 && seed->IsStartedTimeIntegral();
+ if (matCorr || updTime) seed->GetXYZ(xyz1); //starting global position
+ while ( (xToGo-xpos)*dir > kEpsilon){
+ Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep);
+ Double_t x = xpos+step;
+ Double_t bz=GetBz(); // getting the local Bz
+ if (!seed->PropagateToX(x,bz)) return kFALSE;
+ double ds = 0;
+ if (matCorr || updTime) {
+ xyz0[0]=xyz1[0]; // global pos at the beginning of step
+ xyz0[1]=xyz1[1];
+ xyz0[2]=xyz1[2];
+ seed->GetXYZ(xyz1); // // global pos at the end of step
+ if (matCorr) {
+ MeanMaterialBudget(xyz0,xyz1,param);
+ Double_t xrho=param[0]*param[4], xx0=param[1];
+ if (dir>0) xrho = -xrho; // outward should be negative
+ if (!seed->ApplyMaterialCorrection(xx0,xrho,mass,kFALSE)) return kFALSE;
+ ds = param[4];
+ }
+ else { // matCorr is not requested but time integral is
+ double d0 = xyz1[0]-xyz0[0];
+ double d1 = xyz1[1]-xyz0[1];
+ double d2 = xyz1[2]-xyz0[2];
+ ds = TMath::Sqrt(d0*d0+d1*d1+d2*d2);
+ }
+ }
+ if (updTime) seed->AddTimeStep(ds);
+ xpos = seed->GetX();
+ }
+ return kTRUE;
+}
+
+//______________________________________________________________________________
+Bool_t AliITSUTrackerGlo::PropagateSeed(AliExternalTrackParam *seed, Double_t xToGo, Double_t mass, Double_t maxStep, Bool_t matCorr)
{
- // create new seed, optionally copying from the source
- return src ?
- new(fSeedsPool[fSeedsPool.GetEntriesFast()]) AliITSUSeed(*src) :
- new(fSeedsPool[fSeedsPool.GetEntriesFast()]) AliITSUSeed();
+ // propagate seed to given x applying material correction if requested
+ const Double_t kEpsilon = 1e-5;
+ Double_t xpos = seed->GetX();
+ Int_t dir = (xpos<xToGo) ? 1:-1;
+ Double_t xyz0[3],xyz1[3],param[7];
+ //
+ Bool_t updTime = dir>0 && seed->IsStartedTimeIntegral();
+ if (matCorr || updTime) seed->GetXYZ(xyz1); //starting global position
+ while ( (xToGo-xpos)*dir > kEpsilon){
+ Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep);
+ Double_t x = xpos+step;
+ Double_t bz=GetBz(); // getting the local Bz
+ if (!seed->PropagateTo(x,bz)) return kFALSE;
+ double ds = 0;
+ if (matCorr || updTime) {
+ xyz0[0]=xyz1[0]; // global pos at the beginning of step
+ xyz0[1]=xyz1[1];
+ xyz0[2]=xyz1[2];
+ seed->GetXYZ(xyz1); // // global pos at the end of step
+ //
+ if (matCorr) {
+ MeanMaterialBudget(xyz0,xyz1,param);
+ Double_t xrho=param[0]*param[4], xx0=param[1];
+ if (dir>0) xrho = -xrho; // outward should be negative
+ if (!seed->CorrectForMeanMaterial(xx0,xrho,mass)) return kFALSE;
+ ds = param[4];
+ }
+ else { // matCorr is not requested but time integral is
+ double d0 = xyz1[0]-xyz0[0];
+ double d1 = xyz1[1]-xyz0[1];
+ double d2 = xyz1[2]-xyz0[2];
+ ds = TMath::Sqrt(d0*d0+d1*d1+d2*d2);
+ }
+ }
+ if (updTime) seed->AddTimeStep(ds);
+ //
+ xpos = seed->GetX();
+ }
+ return kTRUE;
+}
+
+//______________________________________________________________________________
+void AliITSUTrackerGlo::SaveCurrentTrackHypotheses()
+{
+ // RS: shall we clean up killed seeds?
+ fCurrHyp = 0;
+ // TODO
+
+}
+
+//______________________________________________________________________________
+void AliITSUTrackerGlo::FinalizeHypotheses()
+{
+ // select winner for each hypothesis, remove cl. sharing conflicts
+ AliInfo("TODO");
+ //
+ int nh = fHypStore.GetEntriesFast();
+ for (int ih=0;ih<nh;ih++) {
+ AliITSUTrackHyp* hyp = (AliITSUTrackHyp*) fHypStore.UncheckedAt(ih);
+ if (!hyp || !hyp->DefineWinner()) continue; // TODO
+ CookMCLabel(hyp);
+ UpdateESDTrack(hyp,AliESDtrack::kITSin);
+ }
+
+}
+
+//______________________________________________________________________________
+void AliITSUTrackerGlo::UpdateESDTrack(AliITSUTrackHyp* hyp,Int_t flag)
+{
+ // update ESD track with current best hypothesis
+ AliESDtrack* esdTr = hyp->GetESDTrack();
+ if (!esdTr) return;
+ AliITSUSeed* win = hyp->GetWinner();
+ if (!win) return;
+ switch (flag) {
+ case AliESDtrack::kITSin:
+ esdTr->UpdateTrackParams(hyp,flag); // update kinematics
+ // TODO: set cluster info
+ break;
+ //
+ case AliESDtrack::kITSout:
+ esdTr->UpdateTrackParams(hyp,flag); // update kinematics
+ // TODO: avoid setting friend
+ break;
+ //
+ case AliESDtrack::kITSrefit:
+ esdTr->UpdateTrackParams(hyp,flag); // update kinematics
+ // TODO: avoid setting cluster info
+ break;
+ default:
+ AliFatal(Form("Unknown flag %d",flag));
+ }
+ //
+ // transfer module indices
+ // TODO
+}
+
+//______________________________________________________________________________
+Bool_t AliITSUTrackerGlo::RefitTrack(AliITSUTrackHyp* trc, Double_t rDest, Bool_t stopAtLastCl)
+{
+ // refit track till radius rDest
+ AliITSUTrackHyp tmpTr;
+ //
+ double rCurr = Sqrt(trc->GetX()*trc->GetX() + trc->GetY()*trc->GetY());
+ int dir,lrStart,lrStop;
+ //
+ dir = rCurr<rDest ? 1 : -1;
+ lrStart = fITS->FindFirstLayerID(rCurr,dir);
+ lrStop = fITS->FindLastLayerID(rDest,dir);
+ printf("Refit %d: Lr:%d (%f) -> Lr:%d (%f)\n",dir,lrStart,rCurr, lrStop,rDest);
+ printf("Before refit: "); trc->AliExternalTrackParam::Print();
+ 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));
+ //
+ int ncl = trc->FetchClusterInfo(fClInfo);
+ fCurrMass = trc->GetMass();
+ tmpTr.AliKalmanTrack::operator=(*trc);
+ tmpTr.SetChi2(0);
+ int iclLr[2],nclLr,clCount=0;
+ //
+ for (int ilr=lrStart;ilr!=lrStop;ilr+=dir) {
+ AliITSURecoLayer* lr = fITS->GetLayer(ilr);
+ if ( dir*(rCurr-lr->GetR(dir))>0) continue; // this layer is already passed
+ int ilrA2,ilrA = lr->GetActiveID();
+ // passive layer or active w/o hits will be traversed on the way to next cluster
+ if (!lr->IsActive() || fClInfo[ilrA2=(ilrA<<1)]<0) continue;
+ //
+ if (ilr!=lrStart && !TransportToLayer(&tmpTr,lrStart,ilr)) {
+ AliInfo(Form("Failed to transport %d -> %d\n",lrStart,ilr));
+ return kFALSE; // go to the entrance to the layer
+ }
+ lrStart = ilr;
+ //
+ // select the order in which possible 2 clusters (in case of the overlap) will be traversed and fitted
+ nclLr=0;
+ if (dir>0) { // clusters are stored in increasing radius order
+ iclLr[nclLr++]=fClInfo[ilrA2++];
+ if (fClInfo[ilrA2]>=0) iclLr[nclLr++]=fClInfo[ilrA2];
+ }
+ else {
+ if ( fClInfo[ilrA2+1]>=0 ) iclLr[nclLr++]=fClInfo[ilrA2+1];
+ iclLr[nclLr++]=fClInfo[ilrA2];
+ }
+ //
+ for (int icl=0;icl<nclLr;icl++) {
+ AliITSUClusterPix* clus = (AliITSUClusterPix*)lr->GetCluster(iclLr[icl]);
+ AliITSURecoSens* sens = lr->GetSensorFromID(clus->GetVolumeId());
+ if (!tmpTr.Rotate(sens->GetPhiTF())) {
+ AliInfo(Form("Failed on rotate to %f",sens->GetPhiTF()));
+ return kFALSE;
+ }
+ //printf("Refit cl:%d on lr %d Need to go %.4f -> %.4f\n",icl,ilrA,tmpTr.GetX(),sens->GetXTF()+clus->GetX());
+ if (!PropagateSeed(&tmpTr,sens->GetXTF()+clus->GetX(),fCurrMass)) {
+ AliInfo(Form("Failed on propagate to %f",sens->GetXTF()+clus->GetX()));
+ return kFALSE;
+ }
+ if (!tmpTr.Update(clus)) {
+ AliInfo(Form("Failed on Update"));
+ return kFALSE;
+ }
+ //printf("AfterRefit: "); tmpTr.AliExternalTrackParam::Print();
+ if (stopAtLastCl && ++clCount==ncl) return kTRUE; // it was requested to not propagate after last update
+ }
+ //
+ }
+ // All clusters were succesfully fitted. Even if the track does not reach rDest, this is enough to validate it.
+ // Still, try to go as close as possible to rDest.
+ //
+ if (lrStart!=lrStop) {
+ //printf("Going to last layer %d -> %d\n",lrStart,lrStop);
+ if (!TransportToLayer(&tmpTr,lrStart,lrStop)) {
+ AliInfo(Form("Failed on TransportToLayer %d->%d",lrStart,lrStop));
+ return kTRUE;
+ }
+ if (!GoToExitFromLayer(&tmpTr,fITS->GetLayer(lrStop),dir)) {
+ AliFatal(Form("Failed on GoToExitFromLayer %d",lrStop));
+ return kTRUE; // go till the exit from layer
+ }
+ //
+ //printf("On exit from last layer\n");
+ tmpTr.AliExternalTrackParam::Print();
+ // go to the destination radius
+ if (!tmpTr.GetXatLabR(rDest,rDest,GetBz(),dir)) return kTRUE;
+ if (!PropagateSeed(&tmpTr,rDest,fCurrMass, 100, kFALSE)) return kTRUE;
+ }
+ trc->AliKalmanTrack::operator=(tmpTr);
+ printf("After refit (now at lr %d): ",lrStart); trc->AliExternalTrackParam::Print();
+ return kTRUE;
+}
+
+//__________________________________________________________________
+void AliITSUTrackerGlo::CookMCLabel(AliITSUTrackHyp* hyp)
+{
+ // build MC label
+ //
+ const int kMaxLbPerCl = 3;
+ int lbID[kMaxLayers*6],lbStat[kMaxLayers*6];
+ Int_t lr,nLab=0,nCl=0;
+ AliITSUSeed *seed = hyp->GetWinner();
+ while(seed) {
+ int clID = seed->GetLrCluster(lr);
+ if (clID>=0) {
+ AliCluster *cl = fITS->GetLayerActive(lr)->GetCluster(clID);
+ nCl++;
+ for (int imc=0;imc<kMaxLbPerCl;imc++) { // labels within single cluster
+ int trLb = cl->GetLabel(imc);
+ if (trLb<0) break;
+ // search this mc track in already accounted ones
+ int iLab;
+ for (iLab=0;iLab<nLab;iLab++) if (lbID[iLab]==trLb) break;
+ if (iLab<nLab) lbStat[iLab]++;
+ else {
+ lbID[nLab] = trLb;
+ lbStat[nLab++] = 1;
+ }
+ } // loop over given cluster's labels
+ }
+ seed = (AliITSUSeed*)seed->GetParent();
+ } // loop over clusters
+ //
+ if (nCl && nLab) {
+ int maxLab=0,nTPCok=0;
+ AliESDtrack* esdTr = hyp->GetESDTrack();
+ int tpcLab = esdTr ? Abs(esdTr->GetTPCLabel()) : -kDummyLabel;
+ for (int ilb=nLab;ilb--;) {
+ int st = lbStat[ilb];
+ if (lbStat[maxLab]<st) maxLab=ilb;
+ if (tpcLab==lbID[ilb]) nTPCok += st;
+ }
+ hyp->SetFakeRatio(1.-float(nTPCok)/nCl);
+ hyp->SetLabel( nTPCok==nCl ? tpcLab : -tpcLab);
+ hyp->SetITSLabel( lbStat[maxLab]==nCl ? lbStat[maxLab] : -lbStat[maxLab]); // winner label
+ return;
+ }
+ //
+ hyp->SetFakeRatio(-1.);
+ hyp->SetLabel( kDummyLabel );
+ hyp->SetITSLabel( kDummyLabel );
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff