/* $Id$ */
-///////////////////////////////////////////////////////////////////////////////
-// //
-// TRD track //
-// //
-// Authors: //
-// Alex Bercuci <A.Bercuci@gsi.de> //
-// Markus Fasel <M.Fasel@gsi.de> //
-// //
-///////////////////////////////////////////////////////////////////////////////
+#include "AliLog.h"
+#include "AliESDtrack.h"
+#include "AliTracker.h"
#include "AliTRDtrackV1.h"
#include "AliTRDcluster.h"
#include "AliTRDcalibDB.h"
+#include "AliTRDReconstructor.h"
#include "AliTRDrecoParam.h"
-#include "AliESDtrack.h"
-
ClassImp(AliTRDtrackV1)
+///////////////////////////////////////////////////////////////////////////////
+// //
+// Represents a reconstructed TRD track //
+// Local TRD Kalman track //
+// //
+// Authors: //
+// Alex Bercuci <A.Bercuci@gsi.de> //
+// Markus Fasel <M.Fasel@gsi.de> //
+// //
+///////////////////////////////////////////////////////////////////////////////
//_______________________________________________________________
-AliTRDtrackV1::AliTRDtrackV1() :
- AliTRDtrack()
- ,fRecoParam(0x0)
-{
+AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack()
+ ,fStatus(0)
+ ,fESDid(0)
+ ,fDE(0.)
+ ,fkReconstructor(NULL)
+ ,fBackupTrack(NULL)
+ ,fTrackLow(NULL)
+ ,fTrackHigh(NULL)
+{
//
// Default constructor
//
+ //printf("AliTRDtrackV1::AliTRDtrackV1()\n");
- for(int ip=0; ip<6; ip++){
- fTrackletIndex[ip] = -1;
- fTracklet[ip].Reset();
- }
+ for(int i =0; i<3; i++) fBudget[i] = 0.;
+
+ Float_t pid = 1./AliPID::kSPECIES;
+ for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid;
+
+ for(int ip=0; ip<kNplane; ip++){
+ fTrackletIndex[ip] = -1;
+ fTracklet[ip] = NULL;
+ }
}
//_______________________________________________________________
-AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) :
- AliTRDtrack(t)
- ,fRecoParam(0x0)
+AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &ref) : AliKalmanTrack(ref)
+ ,fStatus(ref.fStatus)
+ ,fESDid(ref.fESDid)
+ ,fDE(ref.fDE)
+ ,fkReconstructor(ref.fkReconstructor)
+ ,fBackupTrack(NULL)
+ ,fTrackLow(NULL)
+ ,fTrackHigh(NULL)
{
//
- // Standard constructor
+ // Copy constructor
//
- //AliInfo(Form("alpha %f", GetAlpha()));
- t.GetTRDtracklets(&fTrackletIndex[0]);
- for(int ip=0; ip<6; ip++) fTracklet[ip].Reset();
+ //printf("AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &)\n");
+ SetBit(kOwner, kFALSE);
+ for(int ip=0; ip<kNplane; ip++){
+ fTrackletIndex[ip] = ref.fTrackletIndex[ip];
+ fTracklet[ip] = ref.fTracklet[ip];
+ }
+ if(ref.fTrackLow) fTrackLow = new AliExternalTrackParam(*ref.fTrackLow);
+ if(ref.fTrackHigh) fTrackHigh = new AliExternalTrackParam(*ref.fTrackHigh);
+
+ for (Int_t i = 0; i < 3;i++) fBudget[i] = ref.fBudget[i];
+
+ for(Int_t is = 0; is<AliPID::kSPECIES; is++) fPID[is] = ref.fPID[is];
+
+ AliKalmanTrack::SetNumberOfClusters(ref.GetNumberOfClusters());
}
//_______________________________________________________________
-AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &t) :
- AliTRDtrack(t)
- ,fRecoParam(0x0)
+AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) : AliKalmanTrack()
+ ,fStatus(0)
+ ,fESDid(0)
+ ,fDE(0.)
+ ,fkReconstructor(NULL)
+ ,fBackupTrack(NULL)
+ ,fTrackLow(NULL)
+ ,fTrackHigh(NULL)
{
//
- // Copy constructor
+ // Constructor from AliESDtrack
//
-}
+ SetESDid(t.GetID());
+ SetLabel(t.GetLabel());
+ SetChi2(0.0);
-//_______________________________________________________________
-// AliTRDtrackV1::~AliTRDtrackV1()
-// {
-//
-// }
+ SetMass(t.GetMass()/*0.000510*/);
+ AliKalmanTrack::SetNumberOfClusters(t.GetTRDncls());
+ Int_t ti[]={-1, -1, -1, -1, -1, -1}; t.GetTRDtracklets(&ti[0]);
+ for(int ip=0; ip<kNplane; ip++){
+ fTrackletIndex[ip] = ti[ip];
+ fTracklet[ip] = NULL;
+ }
+ for(int i =0; i<3; i++) fBudget[i] = 0.;
+
+ Float_t pid = 1./AliPID::kSPECIES;
+ for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid;
+
+ const AliExternalTrackParam *par = &t;
+ if (t.GetStatus() & AliESDtrack::kTRDbackup) {
+ par = t.GetOuterParam();
+ if (!par) {
+ AliError("No backup info!");
+ par = &t;
+ }
+ }
+ Set(par->GetX()
+ ,par->GetAlpha()
+ ,par->GetParameter()
+ ,par->GetCovariance());
+
+ if(t.GetStatus() & AliESDtrack::kTIME) {
+ StartTimeIntegral();
+ Double_t times[10];
+ t.GetIntegratedTimes(times);
+ SetIntegratedTimes(times);
+ SetIntegratedLength(t.GetIntegratedLength());
+ }
+}
-
//_______________________________________________________________
-AliTRDtrackV1::AliTRDtrackV1(AliTRDseedV1 *trklts, const Double_t p[5], const Double_t cov[15], Double_t x, Double_t alpha) :
- AliTRDtrack()
- ,fRecoParam(0x0)
+AliTRDtrackV1::AliTRDtrackV1(AliTRDseedV1 * const trklts, const Double_t p[5], const Double_t cov[15]
+ , Double_t x, Double_t alpha) : AliKalmanTrack()
+ ,fStatus(0)
+ ,fESDid(0)
+ ,fDE(0.)
+ ,fkReconstructor(NULL)
+ ,fBackupTrack(NULL)
+ ,fTrackLow(NULL)
+ ,fTrackHigh(NULL)
{
-// The stand alone tracking constructor
-// TEMPORARY !!!!!!!!!!!
-// to check :
-// 1. covariance matrix
-// 2. dQdl calculation
-
-
- Double_t cnv = 1.0 / (GetBz() * kB2C);
+ //
+ // The stand alone tracking constructor
+ // TEMPORARY !!!!!!!!!!!
+ // to check :
+ // 1. covariance matrix
+ // 2. dQdl calculation
+ //
+ Double_t b(GetBz());
+ Double_t cnv = (TMath::Abs(b) < 1.e-5) ? 1.e5 : 1./GetBz()/kB2C;
+
Double_t pp[5] = { p[0]
- , p[1]
- , x*p[4] - p[2]
- , p[3]
- , p[4]*cnv };
-
+ , p[1]
+ , p[2]
+ , p[3]
+ , p[4]*cnv };
+
Double_t c22 = x*x*cov[14] - 2*x*cov[12] + cov[ 5];
Double_t c32 = x*cov[13] - cov[ 8];
Double_t c20 = x*cov[10] - cov[ 3];
Double_t c21 = x*cov[11] - cov[ 4];
Double_t c42 = x*cov[14] - cov[12];
-
+
Double_t cc[15] = { cov[ 0]
, cov[ 1], cov[ 2]
, c20, c21, c22
, cov[ 6], cov[ 7], c32, cov[ 9]
, cov[10]*cnv, cov[11]*cnv, c42*cnv, cov[13]*cnv, cov[14]*cnv*cnv };
- Set(x,alpha,pp,cc);
- Double_t s = GetSnp();
- Double_t t = GetTgl();
-
- Int_t ncl = 0, nclPlane; AliTRDcluster *c = 0x0;
- for(int iplane=0; iplane<6; iplane++){
- fTrackletIndex[iplane] = -1;
- fTracklet[iplane] = trklts[iplane];
- nclPlane = 0;
- for(int ic = 0; ic<AliTRDseed::knTimebins; ic++){
- if(!fTracklet[iplane].IsUsable(ic)) continue;
- if(!(c = fTracklet[iplane].GetClusters(ic))) continue;
-
- fIndex[ncl] = fTracklet[iplane].GetIndexes(ic);
- Double_t q = TMath::Abs(c->GetQ());
- fClusters[ncl] = c;
- // temporary !!!
- // This is not correctly. Has to be updated in the AliTRDtrackerV1::FollowBackProlonagation()
- fdQdl[ncl] = q * (s*s < 1.) ? TMath::Sqrt((1-s*s)/(1+t*t)) : 1.;
- ncl++;
- nclPlane++;
- }
- //printf("%d N clusters plane %d [%d %d].\n", iplane, nclPlane, fTracklet[iplane].GetN2(), trklts[iplane].GetN());
- }
- //printf("N clusters in AliTRDtrackV1 %d.\n", ncl);
- SetNumberOfClusters(ncl);
+ Double_t mostProbablePt=AliExternalTrackParam::GetMostProbablePt();
+ Double_t p0=TMath::Sign(1/mostProbablePt,pp[4]);
+ Double_t w0=cc[14]/(cc[14] + p0*p0), w1=p0*p0/(cc[14] + p0*p0);
+ AliDebug(3, Form("Pt mixing : w0[%4.2f] pt0[%5.3f] w1[%4.2f] pt[%5.3f]", w0, 1./p0, w1, 1./pp[4]));
+
+ pp[4] = w0*p0 + w1*pp[4];
+ cc[10]*=w1; cc[11]*=w1; cc[12]*=w1; cc[13]*=w1; cc[14]*=w1;
+ Set(x,alpha,pp,cc);
+ AliDebug(2, Form("Init @ x[%6.2f] pt[%5.3f]", x, 1./pp[4]));
+ Int_t ncls = 0;
+ for(int iplane=0; iplane<kNplane; iplane++){
+ fTrackletIndex[iplane] = -1;
+ if(!trklts[iplane].IsOK()) fTracklet[iplane] = NULL;
+ else{
+ fTracklet[iplane] = &trklts[iplane];
+ ncls += fTracklet[iplane]->GetN();
+ }
+ }
+ AliKalmanTrack::SetNumberOfClusters(ncls);
+ for(int i =0; i<3; i++) fBudget[i] = 0.;
+
+ Float_t pid = 1./AliPID::kSPECIES;
+ for(int is =0; is<AliPID::kSPECIES; is++) fPID[is] = pid;
}
//_______________________________________________________________
-Bool_t AliTRDtrackV1::CookPID()
+AliTRDtrackV1::~AliTRDtrackV1()
{
-// CookdEdx(); // truncated mean ... do we still need it ?
+ //AliInfo("");
+ //printf("I-AliTRDtrackV1::~AliTRDtrackV1() : Owner[%s]\n", TestBit(kOwner)?"YES":"NO");
-// CookdEdxTimBin(seed->GetID());
- for(int itrklt=0; itrklt<6; itrklt++){
- for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) fdEdxPlane[itrklt][iSlice] = -1.;
+ if(fBackupTrack) delete fBackupTrack; fBackupTrack = NULL;
- if(fTrackletIndex[itrklt]<0) continue;
- fTracklet[itrklt].CookdEdx(fdEdxPlane[itrklt]);
- }
+ if(fTrackLow) delete fTrackLow; fTrackLow = NULL;
+ if(fTrackHigh) delete fTrackHigh; fTrackHigh = NULL;
- // retrive calibration db
- AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
- if (!calibration) {
- AliError("No access to calibration data");
- return kFALSE;
+ for(Int_t ip=0; ip<kNplane; ip++){
+ if(TestBit(kOwner) && fTracklet[ip]) delete fTracklet[ip];
+ fTracklet[ip] = NULL;
+ fTrackletIndex[ip] = -1;
+ }
+}
+
+//_______________________________________________________________
+AliTRDtrackV1 &AliTRDtrackV1::operator=(const AliTRDtrackV1 &t)
+{
+ //
+ // Assignment operator
+ //
+
+ if (this != &t) {
+ ((AliTRDtrackV1 &) t).Copy(*this);
+ }
+
+ return *this;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtrackV1::Copy(TObject &t) const
+{
+ //
+ // Copy function
+ //
+
+ ((AliTRDtrackV1 &) t).fStatus = fStatus;
+ ((AliTRDtrackV1 &) t).fESDid = fESDid;
+ ((AliTRDtrackV1 &) t).fDE = fDE;
+ ((AliTRDtrackV1 &) t).fkReconstructor = fkReconstructor;
+ ((AliTRDtrackV1 &) t).fBackupTrack = 0x0;
+ ((AliTRDtrackV1 &) t).fTrackLow = 0x0;
+ ((AliTRDtrackV1 &) t).fTrackHigh = 0x0;
+
+ for(Int_t ip = 0; ip < kNplane; ip++) {
+ ((AliTRDtrackV1 &) t).fTrackletIndex[ip] = fTrackletIndex[ip];
+ ((AliTRDtrackV1 &) t).fTracklet[ip] = fTracklet[ip];
+ }
+ if (fTrackLow) {
+ ((AliTRDtrackV1 &) t).fTrackLow = new AliExternalTrackParam(*fTrackLow);
}
+ if (fTrackHigh){
+ ((AliTRDtrackV1 &) t).fTrackHigh = new AliExternalTrackParam(*fTrackHigh);
+ }
+
+ for (Int_t i = 0; i < 3; i++) {
+ ((AliTRDtrackV1 &) t).fBudget[i] = fBudget[i];
+ }
+ for (Int_t is = 0; is < AliPID::kSPECIES; is++) {
+ ((AliTRDtrackV1 &) t).fPID[is] = fPID[is];
+ }
- // Retrieve the CDB container class with the parametric detector response
- const AliTRDCalPID *pd = calibration->GetPIDObject(0/*fRecoParam->GetPIDMethod()*/);
- if (!pd) {
- AliError("No access to AliTRDCalPID object");
+}
+
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::CookLabel(Float_t wrong)
+{
+ // set MC label for this track
+ if(!GetNumberOfClusters()) return kFALSE;
+
+ Int_t s[kMAXCLUSTERSPERTRACK][2];
+ for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) {
+ s[i][0] = -1;
+ s[i][1] = 0;
+ }
+
+ Bool_t labelAdded;
+ Int_t label;
+ AliTRDcluster *c = NULL;
+ for (Int_t ip = 0; ip < kNplane; ip++) {
+ if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
+ for (Int_t ic = 0; ic < AliTRDseedV1::kNclusters; ic++) {
+ if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
+ for (Int_t k = 0; k < 3; k++) {
+ label = c->GetLabel(k);
+ labelAdded = kFALSE;
+ Int_t j = 0;
+ if (label >= 0) {
+ while ((!labelAdded) && (j < kMAXCLUSTERSPERTRACK)) {
+ if ((s[j][0] == label) ||
+ (s[j][1] == 0)) {
+ s[j][0] = label;
+ s[j][1]++;
+ labelAdded = kTRUE;
+ }
+ j++;
+ }
+ }
+ }
+ }
+ }
+
+ Int_t max = 0;
+ label = -123456789;
+ for (Int_t i = 0; i < kMAXCLUSTERSPERTRACK; i++) {
+ if (s[i][1] <= max) continue;
+ max = s[i][1];
+ label = s[i][0];
+ }
+ if ((1. - Float_t(max)/GetNumberOfClusters()) > wrong) label = -label;
+
+ SetLabel(label);
+
+ return kTRUE;
+}
+
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::CookPID()
+{
+//
+// Cook the PID information for the track by delegating the omonim function of the tracklets.
+// Computes the number of tracklets used. The tracklet information are considered independent.
+// For the moment no global track measurement of PID is performed as for example to estimate
+// bremsstrahlung probability based on global chi2 of the track.
+//
+// The status bit AliESDtrack::kTRDpid is set during the call of AliTRDtrackV1::UpdateESDtrack().The PID performance of the
+//TRD for tracks with 6 tacklets is displayed below.
+//Begin_Html
+//<img src="TRD/trackPID.gif">
+//End_Html
+//
+
+ /*Reset the a priori probabilities*/
+ Double_t pid = 1. / AliPID::kSPECIES;
+ for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) fPID[ispec] = pid;
+
+ UChar_t fPIDquality = SetNumberOfTrackletsPID(kTRUE);
+ // no tracklet found for PID calculations
+ if(!fPIDquality) return kFALSE;
+
+ // slot for PID calculation @ track level for bremsstrahlung TODO
+
+ // normalize probabilities
+ Double_t probTotal = 0.0;
+ for (Int_t is = 0; is < AliPID::kSPECIES; is++) probTotal += fPID[is];
+
+
+ if (probTotal <= 0.0) {
+ AliWarning("The total probability over all species <= 0. This may be caused by some error in the reference data.");
return kFALSE;
}
+
+ for (Int_t iSpecies = 0; iSpecies < AliPID::kSPECIES; iSpecies++) fPID[iSpecies] /= probTotal;
+
+ return kTRUE;
+}
-// CookPID(pidQ);
+//___________________________________________________________
+UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const
+{
+// Retrieve number of tracklets used for PID calculation.
+
+ UChar_t nPID = 0;
+ Float_t *prob = NULL;
+ for(int ip=0; ip<kNplane; ip++){
+ if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
+ if(!fTracklet[ip]->IsOK()) continue;
+ if(!(prob = fTracklet[ip]->GetProbability(kFALSE))) continue;
+
+ Int_t nspec = 0; // quality check of tracklet dEdx
+ for(int ispec=0; ispec<AliPID::kSPECIES; ispec++){
+ if(prob[ispec] < 0.) continue;
+ nspec++;
+ }
+ if(!nspec) continue;
+
+ fTracklet[ip]->SetPID();
+ nPID++;
+ }
+ return nPID;
+}
+//___________________________________________________________
+UChar_t AliTRDtrackV1::SetNumberOfTrackletsPID(Bool_t recalc)
+{
+// Retrieve number of tracklets used for PID calculation. // Recalculated PID at tracklet level by quering the PID DB.
+ UChar_t fPIDquality(0);
+
+ // steer PID calculation @ tracklet level
+ Float_t *prob(NULL);
+ for(int ip=0; ip<kNplane; ip++){
+ if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
+ if(!fTracklet[ip]->IsOK()) continue;
+ if(!(prob = fTracklet[ip]->GetProbability(recalc))) return 0;
+
+ Int_t nspec = 0; // quality check of tracklet dEdx
+ for(int ispec=0; ispec<AliPID::kSPECIES; ispec++){
+ if(prob[ispec] < 0.) continue;
+ fPID[ispec] *= prob[ispec];
+ nspec++;
+ }
+ if(!nspec) continue;
+
+ fPIDquality++;
+ }
+ return fPIDquality;
}
+//_______________________________________________________________
+AliTRDcluster* AliTRDtrackV1::GetCluster(Int_t id)
+{
+ // Get the cluster at a certain position in the track
+ Int_t n = 0;
+ for(Int_t ip=0; ip<kNplane; ip++){
+ if(!fTracklet[ip]) continue;
+ if(n+fTracklet[ip]->GetN() <= id){
+ n+=fTracklet[ip]->GetN();
+ continue;
+ }
+ AliTRDcluster *c = NULL;
+ for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){
+ if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
+
+ if(n<id){n++; continue;}
+ return c;
+ }
+ }
+ return NULL;
+}
+
+//_______________________________________________________________
+Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const
+{
+ // Get the cluster index at a certain position in the track
+ Int_t n = 0;
+ for(Int_t ip=0; ip<kNplane; ip++){
+ if(!fTracklet[ip]) continue;
+ if(n+fTracklet[ip]->GetN() <= id){
+ n+=fTracklet[ip]->GetN();
+ continue;
+ }
+ AliTRDcluster *c = NULL;
+ for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){
+ if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
+
+ if(n<id){n++; continue;}
+ return fTracklet[ip]->GetIndexes(ic);
+ }
+ }
+ return -1;
+}
+
+//_______________________________________________________________
+Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt, Double_t *cov) const
+{
+// Compute chi2 between tracklet and track. The value is calculated at the radial position of the track
+// equal to the reference radial position of the tracklet (see AliTRDseedV1)
+//
+// The chi2 estimator is computed according to the following formula
+// BEGIN_LATEX
+// #chi^{2}=(X_{trklt}-X_{track})(C_{trklt}+C_{track})^{-1}(X_{trklt}-X_{track})^{T}
+// END_LATEX
+// where X=(y z), the position of the track/tracklet in the yz plane
+//
+
+ Double_t p[2] = { trklt->GetY(), trklt->GetZ()};
+ trklt->GetCovAt(trklt->GetX(), cov);
+ return AliExternalTrackParam::GetPredictedChi2(p, cov);
+}
//_______________________________________________________________
-Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt) const
+Int_t AliTRDtrackV1::GetSector() const
+{
+ return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector));
+}
+
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const
+{
+ // Checks whether two tracks are equal
+ if (!o) return kFALSE;
+ const AliTRDtrackV1 *inTrack = dynamic_cast<const AliTRDtrackV1*>(o);
+ if (!inTrack) return kFALSE;
+
+ //if ( fPIDquality != inTrack->GetPIDquality() ) return kFALSE;
+
+ for(Int_t i = 0; i < AliPID::kSPECIES; i++){
+ if ( fPID[i] != inTrack->GetPID(i) ) return kFALSE;
+ }
+
+ for (Int_t i = 0; i < 3; i++){
+ if ( fBudget[i] != inTrack->GetBudget(i) ) return kFALSE;
+ }
+ if ( fDE != inTrack->GetEdep() ) return kFALSE;
+ if ( fFakeRatio != inTrack->GetFakeRatio() ) return kFALSE;
+ if ( fChi2 != inTrack->GetChi2() ) return kFALSE;
+ if ( fMass != inTrack->GetMass() ) return kFALSE;
+ if ( fLab != inTrack->GetLabel() ) return kFALSE;
+ if ( fN != inTrack->GetNumberOfClusters() ) return kFALSE;
+ if ( AliKalmanTrack::GetIntegratedLength() != inTrack->GetIntegratedLength() ) return kFALSE;
+
+ if ( GetX() != inTrack->GetX() ) return kFALSE;
+ if ( GetAlpha() != inTrack->GetAlpha() ) return kFALSE;
+ const Double_t *inP = inTrack->GetParameter();
+ const Double_t *curP = GetParameter();
+ for (Int_t i = 0; i < 5; i++){
+ if ( curP[i] != inP[i]) return kFALSE;
+ }
+ const Double_t *inC = inTrack->GetCovariance();
+ const Double_t *curC = GetCovariance();
+ for (Int_t i = 0; i < 15; i++){
+ if ( curC[i] != inC[i]) return kFALSE;
+ }
+
+ for (Int_t iTracklet = 0; iTracklet < kNplane; iTracklet++){
+ AliTRDseedV1 *curTracklet = fTracklet[iTracklet];
+ AliTRDseedV1 *inTracklet = inTrack->GetTracklet(iTracklet);
+ if (curTracklet && inTracklet){
+ if (! curTracklet->IsEqual(inTracklet) ) {
+ curTracklet->Print();
+ inTracklet->Print();
+ return kFALSE;
+ }
+ } else {
+ // if one tracklet exists, and corresponding
+ // in other track doesn't - return kFALSE
+ if(inTracklet || curTracklet) return kFALSE;
+ }
+ }
+
+ return kTRUE;
+}
+
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::IsElectron() const
+{
+ if(GetPID(0) > fkReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE;
+ return kFALSE;
+}
+
+
+//_____________________________________________________________________________
+Int_t AliTRDtrackV1::MakeBackupTrack()
+{
+//
+// Creates a backup track
+// TO DO update quality check of the track.
+//
+
+ Float_t occupancy(0.); Int_t n(0), ncls(0);
+ for(Int_t il(AliTRDgeometry::kNlayer); il--;){
+ if(!fTracklet[il]) continue;
+ n++;
+ occupancy+=fTracklet[il]->GetOccupancyTB();
+ ncls += fTracklet[il]->GetN();
+ }
+ if(!n) return -1;
+ occupancy/=n;
+
+ //Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
+
+ Int_t failedCutId(0);
+ if(GetChi2()/n > 5.0) failedCutId=1;
+ if(occupancy < 0.7) failedCutId=2;
+ //if(ratio1 > 0.6) &&
+ //if(ratio0+ratio1 > 1.5) &&
+ if(GetNCross() != 0) failedCutId=3;
+ if(TMath::Abs(GetSnp()) > 0.85) failedCutId=4;
+ if(ncls < 20) failedCutId=5;
+
+ if(failedCutId){
+ AliDebug(2, Form("\n"
+ "chi2/tracklet < 5.0 [%c] %5.2f\n"
+ "occupancy > 0.7 [%c] %4.2f\n"
+ "NCross == 0 [%c] %d\n"
+ "Abs(snp) < 0.85 [%c] %4.2f\n"
+ "NClusters > 20 [%c] %d"
+ ,(GetChi2()/n<5.0)?'y':'n', GetChi2()/n
+ ,(occupancy>0.7)?'y':'n', occupancy
+ ,(GetNCross()==0)?'y':'n', GetNCross()
+ ,(TMath::Abs(GetSnp())<0.85)?'y':'n', TMath::Abs(GetSnp())
+ ,(ncls>20)?'y':'n', ncls
+ ));
+ return failedCutId;
+ }
+
+ if(fBackupTrack) {
+ fBackupTrack->~AliTRDtrackV1();
+ new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this));
+ return 0;
+ }
+ fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this));
+ return 0;
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z) const
{
//
- // Returns the predicted chi2
+ // Find a prolongation at given x
+ // Return -1 if it does not exist
+ //
+
+ Double_t bz = GetBz();
+ if (!AliExternalTrackParam::GetYAt(xk,bz,y)) return -1;
+ if (!AliExternalTrackParam::GetZAt(xk,bz,z)) return -1;
+
+ return 1;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDtrackV1::PropagateTo(Double_t xk, Double_t xx0, Double_t xrho)
+{
+ //
+ // Propagates this track to a reference plane defined by "xk" [cm]
+ // correcting for the mean crossed material.
//
+ // "xx0" - thickness/rad.length [units of the radiation length]
+ // "xrho" - thickness*density [g/cm^2]
+ //
+
+ if (xk == GetX()) return kTRUE;
+
+ Double_t xyz0[3] = {GetX(), GetY(), GetZ()}, // track position BEFORE propagation
+ b[3]; // magnetic field
+ GetBxByBz(b);
+ if(!AliExternalTrackParam::PropagateToBxByBz(xk,b)) return kFALSE;
+
+ // local track position AFTER propagation
+ Double_t xyz1[3] = {GetX(), GetY(), GetZ()};
+ if(xyz0[0] < xk) {
+ xrho = -xrho;
+ if (IsStartedTimeIntegral()) {
+ Double_t l2 = TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0])
+ + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1])
+ + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2]));
+ Double_t crv = AliExternalTrackParam::GetC(b[2]);
+ if (TMath::Abs(l2*crv) > 0.0001) {
+ // Make correction for curvature if neccesary
+ l2 = 0.5 * TMath::Sqrt((xyz1[0]-xyz0[0])*(xyz1[0]-xyz0[0])
+ + (xyz1[1]-xyz0[1])*(xyz1[1]-xyz0[1]));
+ l2 = 2.0 * TMath::ASin(l2 * crv) / crv;
+ l2 = TMath::Sqrt(l2*l2 + (xyz1[2]-xyz0[2])*(xyz1[2]-xyz0[2]));
+ }
+ AddTimeStep(l2);
+ }
+ }
- Double_t x = trklt->GetX0();
- Double_t p[2] = { trklt->GetYat(x)
- , trklt->GetZat(x) };
- Double_t cov[3];
- trklt->GetCovAt(x, cov);
+ if (!AliExternalTrackParam::CorrectForMeanMaterial(xx0, xrho, GetMass())) return kFALSE;
+
+
+ {
+
+ // Energy losses
+ Double_t p2 = (1.0 + GetTgl()*GetTgl()) / (GetSigned1Pt()*GetSigned1Pt());
+ Double_t beta2 = p2 / (p2 + GetMass()*GetMass());
+ if ((beta2 < 1.0e-10) ||
+ ((5940.0 * beta2/(1.0 - beta2 + 1.0e-10) - beta2) < 0.0)) {
+ return kFALSE;
+ }
+
+ Double_t dE = 0.153e-3 / beta2
+ * (TMath::Log(5940.0 * beta2/(1.0 - beta2 + 1.0e-10)) - beta2)
+ * xrho;
+ fBudget[0] += xrho;
+
+ /*
+ // Suspicious part - think about it ?
+ Double_t kinE = TMath::Sqrt(p2);
+ if (dE > 0.8*kinE) dE = 0.8 * kinE; //
+ if (dE < 0) dE = 0.0; // Not valid region for Bethe bloch
+ */
+
+ fDE += dE;
+
+ /*
+ // Suspicious ! I.B.
+ Double_t sigmade = 0.07 * TMath::Sqrt(TMath::Abs(dE)); // Energy loss fluctuation
+ Double_t sigmac2 = sigmade*sigmade*fC*fC*(p2+GetMass()*GetMass())/(p2*p2);
+ fCcc += sigmac2;
+ fCee += fX*fX * sigmac2;
+ */
- return AliExternalTrackParam::GetPredictedChi2(p, cov);
+ }
+
+ return kTRUE;
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step)
+{
+ //
+ // Propagate track to the radial position
+ // Rotation always connected to the last track position
+ //
+
+ Double_t xyz0[3];
+ Double_t xyz1[3];
+ Double_t y;
+ Double_t z;
+
+ Double_t radius = TMath::Sqrt(GetX()*GetX() + GetY()*GetY());
+ // Direction +-
+ Double_t dir = (radius > r) ? -1.0 : 1.0;
+
+ for (Double_t x = radius+dir*step; dir*x < dir*r; x += dir*step) {
+
+ GetXYZ(xyz0);
+ Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
+ Rotate(alpha,kTRUE);
+ GetXYZ(xyz0);
+ if(GetProlongation(x,y,z)<0) return -1;
+ xyz1[0] = x * TMath::Cos(alpha) + y * TMath::Sin(alpha);
+ xyz1[1] = x * TMath::Sin(alpha) - y * TMath::Cos(alpha);
+ xyz1[2] = z;
+ Double_t param[7];
+ if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param)<=0.) return -1;
+ if (param[1] <= 0) {
+ param[1] = 100000000;
+ }
+ PropagateTo(x,param[1],param[0]*param[4]);
+
+ }
+
+ GetXYZ(xyz0);
+ Double_t alpha = TMath::ATan2(xyz0[1],xyz0[0]);
+ Rotate(alpha,kTRUE);
+ GetXYZ(xyz0);
+ if(GetProlongation(r,y,z)<0) return -1;
+ xyz1[0] = r * TMath::Cos(alpha) + y * TMath::Sin(alpha);
+ xyz1[1] = r * TMath::Sin(alpha) - y * TMath::Cos(alpha);
+ xyz1[2] = z;
+ Double_t param[7];
+ if(AliTracker::MeanMaterialBudget(xyz0,xyz1,param) <= 0.) return -1;
+
+ if (param[1] <= 0) {
+ param[1] = 100000000;
+ }
+ PropagateTo(r,param[1],param[0]*param[4]);
+
+ return 0;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtrackV1::Print(Option_t *o) const
+{
+ // Print track status
+ 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]));
+ AliInfo(Form("Material[%5.2f %5.2f %5.2f]", fBudget[0], fBudget[1], fBudget[2]));
+
+ AliInfo(Form("x[%7.2f] t[%7.4f] alpha[%f] mass[%f]", GetX(), GetIntegratedLength(), GetAlpha(), fMass));
+ AliInfo(Form("Ntr[%1d] NtrPID[%1d] Ncl[%3d] lab[%3d]", GetNumberOfTracklets(), GetNumberOfTrackletsPID(), fN, fLab));
+
+ printf("|X| = (");
+ const Double_t *curP = GetParameter();
+ for (Int_t i = 0; i < 5; i++) printf("%7.2f ", curP[i]);
+ printf(")\n");
+
+ printf("|V| = \n");
+ const Double_t *curC = GetCovariance();
+ for (Int_t i = 0, j=4, k=0; i<15; i++, k++){
+ printf("%7.2f ", curC[i]);
+ if(k==j){
+ printf("\n");
+ k=-1; j--;
+ }
+ }
+ if(strcmp(o, "a")!=0) return;
+
+ for(Int_t ip=0; ip<kNplane; ip++){
+ if(!fTracklet[ip]) continue;
+ fTracklet[ip]->Print(o);
+ }
+}
+
+
+//_____________________________________________________________________________
+Bool_t AliTRDtrackV1::Rotate(Double_t alpha, Bool_t absolute)
+{
+ //
+ // Rotates track parameters in R*phi plane
+ // if absolute rotation alpha is in global system
+ // otherwise alpha rotation is relative to the current rotation angle
+ //
+
+ if (absolute) alpha -= GetAlpha();
+ //else fNRotate++;
+
+ return AliExternalTrackParam::Rotate(GetAlpha()+alpha);
+}
+//___________________________________________________________
+void AliTRDtrackV1::SetNumberOfClusters()
+{
+// Calculate the number of clusters attached to this track
+
+ Int_t ncls = 0;
+ for(int ip=0; ip<kNplane; ip++){
+ if(fTracklet[ip] && fTrackletIndex[ip] >= 0) ncls += fTracklet[ip]->GetN();
+ }
+ AliKalmanTrack::SetNumberOfClusters(ncls);
}
+
//_______________________________________________________________
-void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t plane, Int_t index)
+void AliTRDtrackV1::SetOwner()
{
//
- // Sets the tracklets
+ // Toggle ownership of tracklets
//
- if(plane < 0 || plane >=6) return;
- fTracklet[plane] = (*trklt);
- fTrackletIndex[plane] = index;
+ if(TestBit(kOwner)) return;
+ for (Int_t ip = 0; ip < kNplane; ip++) {
+ if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
+ fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]);
+ fTracklet[ip]->SetOwner();
+ }
+ SetBit(kOwner);
}
//_______________________________________________________________
-Bool_t AliTRDtrackV1::Update(const AliTRDseedV1 *trklt, Double_t chisq)
+void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *const trklt, Int_t index)
{
//
- // Update the track
+ // Set the tracklets
//
+ Int_t plane = trklt->GetPlane();
- Double_t x = trklt->GetX0();
- Double_t p[2] = { trklt->GetYat(x)
- , trklt->GetZat(x) };
- Double_t cov[3];
- trklt->GetCovAt(x, cov);
-
-// Print();
-// AliInfo(Form("cov[%f %f %f]", cov[0], cov[1], cov[2]));
+ fTracklet[plane] = trklt;
+ fTrackletIndex[plane] = index;
+}
- if(!AliExternalTrackParam::Update(p, cov)) return kFALSE;
- //Print();
+//_______________________________________________________________
+void AliTRDtrackV1::SetTrackIn()
+{
+// Save location of birth for the TRD track
+// If the pointer is not valid allocate memory
+//
+ const AliExternalTrackParam *op = dynamic_cast<const AliExternalTrackParam*>(this);
+
+ if(fTrackLow){
+ fTrackLow->~AliExternalTrackParam();
+ new(fTrackLow) AliExternalTrackParam(*op);
+ } else fTrackLow = new AliExternalTrackParam(*op);
+}
+
+//_______________________________________________________________
+void AliTRDtrackV1::SetTrackOut(const AliExternalTrackParam *op)
+{
+// Save location of death for the TRD track
+// If the pointer is not valid allocate memory
+//
+ if(!op) op = dynamic_cast<const AliExternalTrackParam*>(this);
+ if(fTrackHigh){
+ fTrackHigh->~AliExternalTrackParam();
+ new(fTrackHigh) AliExternalTrackParam(*op);
+ } else fTrackHigh = new AliExternalTrackParam(*op);
+}
+
+//_______________________________________________________________
+void AliTRDtrackV1::UnsetTracklet(Int_t plane)
+{
+ if(plane<0 && plane >= kNplane) return;
+ fTrackletIndex[plane] = -1;
+ fTracklet[plane] = NULL;
+}
- // Register info to track
-// Int_t n = GetNumberOfClusters();
-// fIndex[n] = index;
-// fClusters[n] = c;
- SetNumberOfClusters(GetNumberOfClusters()+trklt->GetN());
- SetChi2(GetChi2() + chisq);
- return kTRUE;
+//_______________________________________________________________
+void AliTRDtrackV1::UpdateChi2(Float_t chi2)
+{
+// Update chi2/track with one tracklet contribution
+ SetChi2(GetChi2() + chi2);
}
//_______________________________________________________________
-void AliTRDtrackV1::UpdateESDdEdx(AliESDtrack *track)
+void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track)
{
//
- // Update the dedx info
+ // Update the TRD PID information in the ESD track
//
- for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
- for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
- track->SetTRDsignals(fdEdxPlane[i][j], i, j);
- }
- track->SetTRDTimBin(fTimBinPlane[i], i);
- }
+ Int_t nslices = fkReconstructor->GetRecoParam()->IsEightSlices() ? (Int_t)AliTRDpidUtil::kNNslices : (Int_t)AliTRDpidUtil::kLQslices;
+ // number of tracklets used for PID calculation
+ UChar_t nPID = GetNumberOfTrackletsPID();
+ // number of tracklets attached to the track
+ UChar_t nTrk = GetNumberOfTracklets();
+ // pack the two numbers together and store them in the ESD
+ track->SetTRDntracklets(nPID | (nTrk<<3));
+ // allocate space to store raw PID signals dEdx & momentum
+ track->SetNumberOfTRDslices((nslices+2)*AliTRDgeometry::kNlayer);
+ // store raw signals
+ Float_t p, sp; Double_t spd;
+ for (Int_t ip = 0; ip < kNplane; ip++) {
+ if(fTrackletIndex[ip]<0 || !fTracklet[ip]) continue;
+ if(!fTracklet[ip]->HasPID()) continue;
+ const Float_t *dedx = fTracklet[ip]->GetdEdx();
+ for (Int_t js = 0; js < nslices; js++, dedx++) track->SetTRDslice(*dedx, ip, js);
+ p = fTracklet[ip]->GetMomentum(&sp); spd = sp;
+ track->SetTRDmomentum(p, ip, &spd);
+ }
+ // store PID probabilities
+ track->SetTRDpid(fPID);
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff