1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
19 #include "AliESDtrack.h"
20 #include "AliTracker.h"
22 #include "AliTRDtrackV1.h"
23 #include "AliTRDcluster.h"
24 #include "AliTRDcalibDB.h"
25 #include "AliTRDReconstructor.h"
26 #include "AliTRDrecoParam.h"
28 ClassImp(AliTRDtrackV1)
30 ///////////////////////////////////////////////////////////////////////////////
32 // Represents a reconstructed TRD track //
33 // Local TRD Kalman track //
36 // Alex Bercuci <A.Bercuci@gsi.de> //
37 // Markus Fasel <M.Fasel@gsi.de> //
39 ///////////////////////////////////////////////////////////////////////////////
41 //_______________________________________________________________
42 AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack()
46 ,fkReconstructor(NULL)
52 // Default constructor
54 //printf("AliTRDtrackV1::AliTRDtrackV1()\n");
56 for(int i =0; i<3; i++) fBudget[i] = 0.;
58 Float_t pid = 1./AliPID::kSPECIES;
59 for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid;
61 for(int ip=0; ip<kNplane; ip++){
62 fTrackletIndex[ip] = -1;
67 //_______________________________________________________________
68 AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &ref) : AliKalmanTrack(ref)
72 ,fkReconstructor(ref.fkReconstructor)
81 //printf("AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &)\n");
82 SetBit(kOwner, kFALSE);
83 for(int ip=0; ip<kNplane; ip++){
84 fTrackletIndex[ip] = ref.fTrackletIndex[ip];
85 fTracklet[ip] = ref.fTracklet[ip];
87 if(ref.fTrackLow) fTrackLow = new AliExternalTrackParam(*ref.fTrackLow);
88 if(ref.fTrackHigh) fTrackHigh = new AliExternalTrackParam(*ref.fTrackHigh);
90 for (Int_t i = 0; i < 3;i++) fBudget[i] = ref.fBudget[i];
92 for(Int_t is = 0; is<AliPID::kSPECIES; is++) fPID[is] = ref.fPID[is];
94 AliKalmanTrack::SetNumberOfClusters(ref.GetNumberOfClusters());
97 //_______________________________________________________________
98 AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) : AliKalmanTrack()
102 ,fkReconstructor(NULL)
108 // Constructor from AliESDtrack
112 SetLabel(t.GetLabel());
115 SetMass(t.GetMass()/*0.000510*/);
116 AliKalmanTrack::SetNumberOfClusters(t.GetTRDncls());
117 Int_t ti[]={-1, -1, -1, -1, -1, -1}; t.GetTRDtracklets(&ti[0]);
118 for(int ip=0; ip<kNplane; ip++){
119 fTrackletIndex[ip] = ti[ip];
120 fTracklet[ip] = NULL;
122 for(int i =0; i<3; i++) fBudget[i] = 0.;
124 Float_t pid = 1./AliPID::kSPECIES;
125 for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid;
127 const AliExternalTrackParam *par = &t;
128 if (t.GetStatus() & AliESDtrack::kTRDbackup) {
129 par = t.GetOuterParam();
131 AliError("No backup info!");
138 ,par->GetCovariance());
140 if(t.GetStatus() & AliESDtrack::kTIME) {
143 t.GetIntegratedTimes(times);
144 SetIntegratedTimes(times);
145 SetIntegratedLength(t.GetIntegratedLength());
149 //_______________________________________________________________
150 AliTRDtrackV1::AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15]
151 , Double_t x, Double_t alpha) : AliKalmanTrack()
155 ,fkReconstructor(NULL)
161 // The stand alone tracking constructor
162 // TEMPORARY !!!!!!!!!!!
164 // 1. covariance matrix
165 // 2. dQdl calculation
169 Double_t cnv = (TMath::Abs(b) < 1.e-5) ? 1.e5 : 1./GetBz()/kB2C;
171 Double_t pp[5] = { p[0]
177 Double_t c22 = x*x*cov[14] - 2*x*cov[12] + cov[ 5];
178 Double_t c32 = x*cov[13] - cov[ 8];
179 Double_t c20 = x*cov[10] - cov[ 3];
180 Double_t c21 = x*cov[11] - cov[ 4];
181 Double_t c42 = x*cov[14] - cov[12];
183 Double_t cc[15] = { cov[ 0]
186 , cov[ 6], cov[ 7], c32, cov[ 9]
187 , cov[10]*cnv, cov[11]*cnv, c42*cnv, cov[13]*cnv, cov[14]*cnv*cnv };
189 Double_t mostProbablePt=AliExternalTrackParam::GetMostProbablePt();
190 Double_t p0=TMath::Sign(1/mostProbablePt,pp[4]);
191 Double_t w0=cc[14]/(cc[14] + p0*p0), w1=p0*p0/(cc[14] + p0*p0);
192 AliDebug(3, Form("Pt mixing : w0[%4.2f] pt0[%5.3f] w1[%4.2f] pt[%5.3f]", w0, 1./p0, w1, 1./pp[4]));
194 pp[4] = w0*p0 + w1*pp[4];
195 cc[10]*=w1; cc[11]*=w1; cc[12]*=w1; cc[13]*=w1; cc[14]*=w1;
197 AliDebug(2, Form("Init @ x[%6.2f] pt[%5.3f]", x, 1./pp[4]));
199 for(int iplane=0; iplane<kNplane; iplane++){
200 fTrackletIndex[iplane] = -1;
201 if(!trklts[iplane].IsOK()) fTracklet[iplane] = NULL;
203 fTracklet[iplane] = &trklts[iplane];
204 ncls += fTracklet[iplane]->GetN();
207 AliKalmanTrack::SetNumberOfClusters(ncls);
208 for(int i =0; i<3; i++) fBudget[i] = 0.;
210 Float_t pid = 1./AliPID::kSPECIES;
211 for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid;
214 //_______________________________________________________________
215 AliTRDtrackV1::~AliTRDtrackV1()
218 //printf("I-AliTRDtrackV1::~AliTRDtrackV1() : Owner[%s]\n", TestBit(kOwner)?"YES":"NO");
220 if(fBackupTrack) delete fBackupTrack; fBackupTrack = NULL;
222 if(fTrackLow) delete fTrackLow; fTrackLow = NULL;
223 if(fTrackHigh) delete fTrackHigh; fTrackHigh = NULL;
225 for(Int_t ip=0; ip<kNplane; ip++){
226 if(TestBit(kOwner) && fTracklet[ip]) delete fTracklet[ip];
227 fTracklet[ip] = NULL;
228 fTrackletIndex[ip] = -1;
232 //_______________________________________________________________
233 Bool_t AliTRDtrackV1::CookLabel(Float_t wrong)
235 // set MC label for this track
236 if(!GetNumberOfClusters()) return kFALSE;
238 Int_t s[kMAXCLUSTERSPERTRACK][2];
239 for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) {
246 AliTRDcluster *c = NULL;
247 for (Int_t ip = 0; ip < kNplane; ip++) {
248 if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
249 for (Int_t ic = 0; ic < AliTRDseedV1::kNclusters; ic++) {
250 if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
251 for (Int_t k = 0; k < 3; k++) {
252 label = c->GetLabel(k);
256 while ((!labelAdded) && (j < kMAXCLUSTERSPERTRACK)) {
257 if ((s[j][0] == label) ||
272 for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) {
273 if (s[i][1] <= max) continue;
277 if ((1. - Float_t(max)/GetNumberOfClusters()) > wrong) label = -label;
284 //_______________________________________________________________
285 Bool_t AliTRDtrackV1::CookPID()
288 // Cook the PID information for the track by delegating the omonim function of the tracklets.
289 // Computes the number of tracklets used. The tracklet information are considered independent.
290 // For the moment no global track measurement of PID is performed as for example to estimate
291 // bremsstrahlung probability based on global chi2 of the track.
293 // The status bit AliESDtrack::kTRDpid is set during the call of AliTRDtrackV1::UpdateESDtrack().The PID performance of the
294 //TRD for tracks with 6 tacklets is displayed below.
296 //<img src="TRD/trackPID.gif">
300 /*Reset the a priori probabilities*/
301 Double_t pid = 1. / AliPID::kSPECIES;
302 for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) fPID[ispec] = pid;
304 UChar_t fPIDquality = SetNumberOfTrackletsPID(kTRUE);
305 // no tracklet found for PID calculations
306 if(!fPIDquality) return kFALSE;
308 // slot for PID calculation @ track level for bremsstrahlung TODO
310 // normalize probabilities
311 Double_t probTotal = 0.0;
312 for (Int_t is = 0; is < AliPID::kSPECIES; is++) probTotal += fPID[is];
315 if (probTotal <= 0.0) {
316 AliWarning("The total probability over all species <= 0. This may be caused by some error in the reference data.");
320 for (Int_t iSpecies = 0; iSpecies < AliPID::kSPECIES; iSpecies++) fPID[iSpecies] /= probTotal;
325 //___________________________________________________________
326 UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const
328 // Retrieve number of tracklets used for PID calculation.
331 Float_t *prob = NULL;
332 for(int ip=0; ip<kNplane; ip++){
333 if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
334 if(!fTracklet[ip]->IsOK()) continue;
335 if(!(prob = fTracklet[ip]->GetProbability(kFALSE))) continue;
337 Int_t nspec = 0; // quality check of tracklet dEdx
338 for(int ispec=0; ispec<AliPID::kSPECIES; ispec++){
339 if(prob[ispec] < 0.) continue;
344 fTracklet[ip]->SetPID();
350 //___________________________________________________________
351 UChar_t AliTRDtrackV1::SetNumberOfTrackletsPID(Bool_t recalc)
353 // Retrieve number of tracklets used for PID calculation. // Recalculated PID at tracklet level by quering the PID DB.
355 UChar_t fPIDquality(0);
357 // steer PID calculation @ tracklet level
359 for(int ip=0; ip<kNplane; ip++){
360 if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
361 if(!fTracklet[ip]->IsOK()) continue;
362 if(!(prob = fTracklet[ip]->GetProbability(recalc))) return 0;
364 Int_t nspec = 0; // quality check of tracklet dEdx
365 for(int ispec=0; ispec<AliPID::kSPECIES; ispec++){
366 if(prob[ispec] < 0.) continue;
367 fPID[ispec] *= prob[ispec];
377 //_______________________________________________________________
378 AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id)
380 // Get the cluster at a certain position in the track
382 for(Int_t ip=0; ip<kNplane; ip++){
383 if(!fTracklet[ip]) continue;
384 if(n+fTracklet[ip]->GetN() <= id){
385 n+=fTracklet[ip]->GetN();
388 AliTRDcluster *c = NULL;
389 for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){
390 if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
392 if(n<id){n++; continue;}
399 //_______________________________________________________________
400 Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const
402 // Get the cluster index at a certain position in the track
404 for(Int_t ip=0; ip<kNplane; ip++){
405 if(!fTracklet[ip]) continue;
406 if(n+fTracklet[ip]->GetN() <= id){
407 n+=fTracklet[ip]->GetN();
410 AliTRDcluster *c = NULL;
411 for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){
412 if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
414 if(n<id){n++; continue;}
415 return fTracklet[ip]->GetIndexes(ic);
421 //_______________________________________________________________
422 Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt, Double_t *cov) const
424 // Compute chi2 between tracklet and track. The value is calculated at the radial position of the track
425 // equal to the reference radial position of the tracklet (see AliTRDseedV1)
427 // The chi2 estimator is computed according to the following formula
429 // #chi^{2}=(X_{trklt}-X_{track})(C_{trklt}+C_{track})^{-1}(X_{trklt}-X_{track})^{T}
431 // where X=(y z), the position of the track/tracklet in the yz plane
434 Double_t p[2] = { trklt->GetY(), trklt->GetZ()};
435 trklt->GetCovAt(trklt->GetX(), cov);
436 return AliExternalTrackParam::GetPredictedChi2(p, cov);
439 //_______________________________________________________________
440 Int_t AliTRDtrackV1::GetSector() const
442 return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector));
445 //_______________________________________________________________
446 Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const
448 // Checks whether two tracks are equal
449 if (!o) return kFALSE;
450 const AliTRDtrackV1 *inTrack = dynamic_cast<const AliTRDtrackV1*>(o);
451 if (!inTrack) return kFALSE;
453 //if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE;
455 for(Int_t i = 0; i < AliPID::kSPECIES; i++){
456 if ( fPID[i] != inTrack->GetPID(i) ) return kFALSE;
459 for (Int_t i = 0; i < 3; i++){
460 if ( fBudget[i] != inTrack->GetBudget(i) ) return kFALSE;
462 if ( fDE != inTrack->GetEdep() ) return kFALSE;
463 if ( fFakeRatio != inTrack->GetFakeRatio() ) return kFALSE;
464 if ( fChi2 != inTrack->GetChi2() ) return kFALSE;
465 if ( fMass != inTrack->GetMass() ) return kFALSE;
466 if ( fLab != inTrack->GetLabel() ) return kFALSE;
467 if ( fN != inTrack->GetNumberOfClusters() ) return kFALSE;
468 if ( AliKalmanTrack::GetIntegratedLength() != inTrack->GetIntegratedLength() ) return kFALSE;
470 if ( GetX() != inTrack->GetX() ) return kFALSE;
471 if ( GetAlpha() != inTrack->GetAlpha() ) return kFALSE;
472 const Double_t *inP = inTrack->GetParameter();
473 const Double_t *curP = GetParameter();
474 for (Int_t i = 0; i < 5; i++){
475 if ( curP[i] != inP[i]) return kFALSE;
477 const Double_t *inC = inTrack->GetCovariance();
478 const Double_t *curC = GetCovariance();
479 for (Int_t i = 0; i < 15; i++){
480 if ( curC[i] != inC[i]) return kFALSE;
483 for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){
484 AliTRDseedV1 *curTracklet = fTracklet[iTracklet];
485 AliTRDseedV1 *inTracklet = inTrack->GetTracklet(iTracklet);
486 if (curTracklet && inTracklet){
487 if (! curTracklet->IsEqual(inTracklet) ) {
488 curTracklet->Print();
493 // if one tracklet exists, and corresponding
494 // in other track doesn't - return kFALSE
495 if(inTracklet || curTracklet) return kFALSE;
502 //_______________________________________________________________
503 Bool_t AliTRDtrackV1::IsElectron() const
505 if(GetPID(0) > fkReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE;
510 //_____________________________________________________________________________
511 Int_t AliTRDtrackV1::MakeBackupTrack()
514 // Creates a backup track
515 // TO DO update quality check of the track.
518 Float_t occupancy(0.); Int_t n(0), ncls(0);
519 for(Int_t il(AliTRDgeometry::kNlayer); il--;){
520 if(!fTracklet[il]) continue;
522 occupancy+=fTracklet[il]->GetOccupancyTB();
523 ncls += fTracklet[il]->GetN();
528 //Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
530 Int_t failedCutId(0);
531 if(GetChi2()/n > 5.0) failedCutId=1;
532 if(occupancy < 0.7) failedCutId=2;
533 //if(ratio1 > 0.6) &&
534 //if(ratio0+ratio1 > 1.5) &&
535 if(GetNCross() != 0) failedCutId=3;
536 if(TMath::Abs(GetSnp()) > 0.85) failedCutId=4;
537 if(ncls < 20) failedCutId=5;
540 AliDebug(2, Form("\n"
541 "chi2/tracklet < 5.0 [%c] %5.2f\n"
542 "occupancy > 0.7 [%c] %4.2f\n"
543 "NCross == 0 [%c] %d\n"
544 "Abs(snp) < 0.85 [%c] %4.2f\n"
545 "NClusters > 20 [%c] %d"
546 ,(GetChi2()/n<5.0)?'y':'n', GetChi2()/n
547 ,(occupancy>0.7)?'y':'n', occupancy
548 ,(GetNCross()==0)?'y':'n', GetNCross()
549 ,(TMath::Abs(GetSnp())<0.85)?'y':'n', TMath::Abs(GetSnp())
550 ,(ncls>20)?'y':'n', ncls
556 fBackupTrack->~AliTRDtrackV1();
557 new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this));
560 fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this));
564 //_____________________________________________________________________________
565 Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z)
568 // Find a prolongation at given x
569 // Return -1 if it does not exist
572 Double_t bz = GetBz();
573 if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return -1;
574 if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return -1;
580 //_____________________________________________________________________________
581 Bool_t AliTRDtrackV1::PropagateTo(Double_t xk, Double_t xx0, Double_t xrho)
584 // Propagates this track to a reference plane defined by "xk" [cm]
585 // correcting for the mean crossed material.
587 // "xx0" - thickness/rad.length [units of the radiation length]
588 // "xrho" - thickness*density [g/cm^2]
591 if (xk == GetX()) return kTRUE;
593 Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation
594 b[3]; // magnetic field
596 if(!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE;
598 // local track position AFTER propagation
599 Double_t xyz1[3] = {GetX(), GetY(), GetZ()};
602 if (IsStartedTimeIntegral()) {
603 Double_t l2 = TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0])
604 + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1])
605 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2]));
606 Double_t crv = AliExternalTrackParam::GetC(b[2]);
607 if (TMath::Abs(l2*crv) > 0.0001) {
608 // Make correction for curvature if neccesary
609 l2 = 0.5 * TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0])
610 + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1]));
611 l2 = 2.0 * TMath::ASin(l2 * crv) / crv;
612 l2 = TMath::Sqrt(l2*l2 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2]));
618 if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, GetMass())) return kFALSE;
624 Double_t p2 = (1.0 + GetTgl()*GetTgl()) / (GetSigned1Pt()*GetSigned1Pt());
625 Double_t beta2 = p2 / (p2 + GetMass()*GetMass());
626 if ((beta2 < 1.0e-10) ||
627 ((5940.0 * beta2/(1.0 - beta2 + 1.0e-10) - beta2) < 0.0)) {
631 Double_t dE = 0.153e-3 / beta2
632 * (TMath::Log(5940.0 * beta2/(1.0 - beta2 + 1.0e-10)) - beta2)
637 // Suspicious part - think about it ?
638 Double_t kinE = TMath::Sqrt(p2);
639 if (dE > 0.8*kinE) dE = 0.8 * kinE; //
640 if (dE < 0) dE = 0.0; // Not valid region for Bethe bloch
647 Double_t sigmade = 0.07 * TMath::Sqrt(TMath::Abs(dE)); // Energy loss fluctuation
648 Double_t sigmac2 = sigmade*sigmade*fC*fC*(p2+GetMass()*GetMass())/(p2*p2);
650 fCee += fX*fX * sigmac2;
658 //_____________________________________________________________________________
659 Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step)
662 // Propagate track to the radial position
663 // Rotation always connected to the last track position
671 Double_t radius = TMath::Sqrt(GetX()*GetX() + GetY()*GetY());
673 Double_t dir = (radius > r) ? -1.0 : 1.0;
675 for (Double_t x = radius+dir*step; dir*x < dir*r; x += dir*step) {
678 Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
681 if(GetProlongation(x,y,z)<0) return -1;
682 xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha);
683 xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha);
686 if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param)<=0.) return -1;
688 param[1] = 100000000;
690 PropagateTo(x,param[1],param[0]*param[4]);
695 Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
698 if(GetProlongation(r,y,z)<0) return -1;
699 xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha);
700 xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha);
703 if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param) <= 0.) return -1;
706 param[1] = 100000000;
708 PropagateTo(r,param[1],param[0]*param[4]);
714 //_____________________________________________________________________________
715 void AliTRDtrackV1::Print(Option_t *o) const
717 // Print track status
718 AliInfo(Form("PID [%4.1f %4.1f %4.1f %4.1f %4.1f]", 1.E2*fPID[0], 1.E2*fPID[1], 1.E2*fPID[2], 1.E2*fPID[3], 1.E2*fPID[4]));
719 AliInfo(Form("Material[%5.2f %5.2f %5.2f]", fBudget[0], fBudget[1], fBudget[2]));
721 AliInfo(Form("x[%7.2f] t[%7.4f] alpha[%f] mass[%f]", GetX(), GetIntegratedLength(), GetAlpha(), fMass));
722 AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab));
725 const Double_t *curP = GetParameter();
726 for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]);
730 const Double_t *curC = GetCovariance();
731 for (Int_t i = 0, j=4, k=0; i<15; i++, k++){
732 printf("%7.2f ", curC[i]);
738 if(strcmp(o, "a")!=0) return;
740 for(Int_t ip=0; ip<kNplane; ip++){
741 if(!fTracklet[ip]) continue;
742 fTracklet[ip]->Print(o);
747 //_____________________________________________________________________________
748 Bool_t AliTRDtrackV1::Rotate(Double_t alpha, Bool_t absolute)
751 // Rotates track parameters in R*phi plane
752 // if absolute rotation alpha is in global system
753 // otherwise alpha rotation is relative to the current rotation angle
756 if (absolute) alpha -= GetAlpha();
759 return AliExternalTrackParam::Rotate(GetAlpha()+alpha);
762 //___________________________________________________________
763 void AliTRDtrackV1::SetNumberOfClusters()
765 // Calculate the number of clusters attached to this track
768 for(int ip=0; ip<kNplane; ip++){
769 if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN();
771 AliKalmanTrack::SetNumberOfClusters(ncls);
775 //_______________________________________________________________
776 void AliTRDtrackV1::SetOwner()
779 // Toggle ownership of tracklets
782 if(TestBit(kOwner)) return;
783 for (Int_t ip = 0; ip < kNplane; ip++) {
784 if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
785 fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]);
786 fTracklet[ip]->SetOwner();
791 //_______________________________________________________________
792 void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index)
797 Int_t plane = trklt->GetPlane();
799 fTracklet[plane] = trklt;
800 fTrackletIndex[plane] = index;
803 //_______________________________________________________________
804 void AliTRDtrackV1::SetTrackIn()
806 const AliExternalTrackParam *op = dynamic_cast<const AliExternalTrackParam*>(this);
807 fTrackLow = fTrackLow ? new(fTrackLow) AliExternalTrackParam(*op) : new AliExternalTrackParam(*op);
810 //_______________________________________________________________
811 void AliTRDtrackV1::SetTrackOut(const AliExternalTrackParam *op)
813 if(!op) op = dynamic_cast<const AliExternalTrackParam*>(this);
814 fTrackHigh = fTrackHigh ? new(fTrackHigh) AliExternalTrackParam(*op) : new AliExternalTrackParam(*op);
817 //_______________________________________________________________
818 void AliTRDtrackV1::UnsetTracklet(Int_t plane)
820 if(plane<0 && plane >= kNplane) return;
821 fTrackletIndex[plane] = -1;
822 fTracklet[plane] = NULL;
826 //_______________________________________________________________
827 Bool_t AliTRDtrackV1::Update(Double_t *p, Double_t *cov, Double_t chi2, Bool_t use)
832 AliDebug(2, Form("Point:\n p=[%6.2f %6.2f]\n V=[%6.2f %6.2f]\n [%6.2f %6.2f]", p[0], p[1], cov[0], cov[1], cov[1], cov[2]));
833 if(use && !AliExternalTrackParam::Update(p, cov)) return kFALSE;
835 // Register info to track
836 SetNumberOfClusters();
837 SetChi2(GetChi2() + chi2);
841 //_______________________________________________________________
842 void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track)
845 // Update the TRD PID information in the ESD track
848 Int_t nslices = fkReconstructor->GetRecoParam()->IsEightSlices() ? (Int_t)AliTRDpidUtil::kNNslices : (Int_t)AliTRDpidUtil::kLQslices;
849 // number of tracklets used for PID calculation
850 UChar_t nPID = GetNumberOfTrackletsPID();
851 // number of tracklets attached to the track
852 UChar_t nTrk = GetNumberOfTracklets();
853 // pack the two numbers together and store them in the ESD
854 track->SetTRDntracklets(nPID | (nTrk<<3));
855 // allocate space to store raw PID signals dEdx & momentum
856 track->SetNumberOfTRDslices((nslices+2)*AliTRDgeometry::kNlayer);
858 Float_t p, sp; Double_t spd;
859 for (Int_t ip = 0; ip < kNplane; ip++) {
860 if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
861 if(!fTracklet[ip]->HasPID()) continue;
862 const Float_t *dedx = fTracklet[ip]->GetdEdx();
863 for (Int_t js = 0; js < nslices; js++, dedx++) track->SetTRDslice(*dedx, ip, js);
864 p = fTracklet[ip]->GetMomentum(&sp); spd = sp;
865 track->SetTRDmomentum(p, ip, &spd);
867 // store PID probabilities
868 track->SetTRDpid(fPID);