/* $Id$ */
+#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)
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
//_______________________________________________________________
-AliTRDtrackV1::AliTRDtrackV1()
- :AliTRDtrack()
- ,fRecoParam(0x0)
+AliTRDtrackV1::AliTRDtrackV1() : AliKalmanTrack()
+ ,fStatus(0)
+ ,fDE(0.)
+ ,fReconstructor(0x0)
+ ,fBackupTrack(0x0)
+ ,fTrackLow(0x0)
+ ,fTrackHigh(0x0)
{
//
// Default constructor
//
-
- for(int ip=0; ip<6; ip++){
- fTrackletIndex[ip] = -1;
- fTracklet[ip].Reset();
- }
+ //printf("AliTRDtrackV1::AliTRDtrackV1()\n");
+
+ 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] = 0xffff;
+ fTracklet[ip] = 0x0;
+ }
}
//_______________________________________________________________
-AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t)
- :AliTRDtrack(t)
- ,fRecoParam(0x0)
+AliTRDtrackV1::AliTRDtrackV1(const AliTRDtrackV1 &ref) : AliKalmanTrack(ref)
+ ,fStatus(ref.fStatus)
+ ,fDE(ref.fDE)
+ ,fReconstructor(ref.fReconstructor)
+ ,fBackupTrack(0x0)
+ ,fTrackLow(0x0)
+ ,fTrackHigh(0x0)
{
//
- // Constructor from AliESDtrack
+ // 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 &ref)
- :AliTRDtrack(ref)
- ,fRecoParam(ref.fRecoParam)
+AliTRDtrackV1::AliTRDtrackV1(const AliESDtrack &t) : AliKalmanTrack()
+ ,fStatus(0)
+ ,fDE(0.)
+ ,fReconstructor(0x0)
+ ,fBackupTrack(0x0)
+ ,fTrackLow(0x0)
+ ,fTrackHigh(0x0)
{
//
- // Copy constructor
+ // Constructor from AliESDtrack
//
- for(int ip=0; ip<6; ip++){
- fTrackletIndex[ip] = ref.fTrackletIndex[ip];
- fTracklet[ip] = ref.fTracklet[ip];
- }
+ SetLabel(t.GetLabel());
+ SetChi2(0.0);
+
+ SetMass(t.GetMass()/*0.000510*/);
+ AliKalmanTrack::SetNumberOfClusters(t.GetTRDncls());
+ Int_t ti[kNplane]; t.GetTRDtracklets(&ti[0]);
+ for(int ip=0; ip<kNplane; ip++){
+ fTrackletIndex[ip] = ti[ip] < 0 ? 0xffff : ti[ip];
+ fTracklet[ip] = 0x0;
+ }
+ 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()
-// {
-//
-// }
-
-//_______________________________________________________________
-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 *trklts, const Double_t p[5], const Double_t cov[15]
+ , Double_t x, Double_t alpha) : AliKalmanTrack()
+ ,fStatus(0)
+ ,fDE(0.)
+ ,fReconstructor(0x0)
+ ,fBackupTrack(0x0)
+ ,fTrackLow(0x0)
+ ,fTrackHigh(0x0)
{
//
// The stand alone tracking constructor
// 2. dQdl calculation
//
- Double_t cnv = 1.0 / (GetBz() * kB2C);
+ Double_t cnv = GetBz() < 1.e-5 ? 1.e5 : 1.0 / (GetBz() * kB2C);
+ // Double_t cnv = 1.0 / (GetBz() * kB2C);
Double_t pp[5] = { p[0]
, p[1]
- , x*p[4] - p[2]
+ , p[2]
, p[3]
, p[4]*cnv };
, 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 };
-
+
+ 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);
+ 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);
- 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());
+ Int_t ncls = 0;
+ for(int iplane=0; iplane<kNplane; iplane++){
+ fTrackletIndex[iplane] = 0xffff;
+ if(!trklts[iplane].IsOK()) fTracklet[iplane] = 0x0;
+ else{
+ fTracklet[iplane] = &trklts[iplane];
+ ncls += fTracklet[iplane]->GetN();
+ }
}
- //printf("N clusters in AliTRDtrackV1 %d.\n", ncl);
- SetNumberOfClusters(ncl);
+ 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()
{
- //
- // Cook the PID information
- //
+ //AliInfo("");
+ //printf("I-AliTRDtrackV1::~AliTRDtrackV1() : Owner[%s]\n", TestBit(kOwner)?"YES":"NO");
-// CookdEdx(); // truncated mean ... do we still need it ?
+ if(fBackupTrack) delete fBackupTrack; fBackupTrack = 0x0;
-// CookdEdxTimBin(seed->GetID());
-
- // Sets the a priori probabilities
- for(int ispec=0; ispec<AliPID::kSPECIES; ispec++) {
- fPID[ispec] = 1.0 / AliPID::kSPECIES;
+ if(fTrackLow) delete fTrackLow; fTrackLow = 0x0;
+ if(fTrackHigh) delete fTrackHigh; fTrackHigh = 0x0;
+
+ for(Int_t ip=0; ip<kNplane; ip++){
+ if(TestBit(kOwner) && fTracklet[ip]) delete fTracklet[ip];
+ fTracklet[ip] = 0x0;
+ fTrackletIndex[ip] = 0xffff;
}
+}
- // steer PID calculation @ tracklet level
- Double_t *prob = 0x0;
- fPIDquality = 0;
- for(int itrklt=0; itrklt<AliESDtrack::kNPlane; itrklt++){
- //for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) fdEdxPlane[itrklt][iSlice] = -1.;
-
- if(fTrackletIndex[itrklt]<0) continue;
- if(!fTracklet[itrklt].IsOK()) continue;
- if(!(prob = fTracklet[itrklt].GetProbability())) return kFALSE;
-
- 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++;
- }
+//_______________________________________________________________
+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;
+ }
- // no tracklet found for PID calculations
- if(!fPIDquality) return kTRUE;
+ Bool_t labelAdded;
+ Int_t label;
+ AliTRDcluster *c = 0x0;
+ for (Int_t ip = 0; ip < kNplane; ip++) {
+ if(fTrackletIndex[ip] == 0xffff) 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;
+}
- // slot for PID calculation @ track level
-
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::CookPID()
+{
+ //
+ // Cook the PID information
+ //
+
+ // 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
+
// 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;
+}
+
+//___________________________________________________________
+UChar_t AliTRDtrackV1::GetNumberOfTrackletsPID() const
+{
+// Retrieve number of tracklets used for PID calculation.
+
+ UChar_t nPID = 0;
+ Float_t *prob = 0x0;
+ for(int ip=0; ip<kNplane; ip++){
+ if(fTrackletIndex[ip] == 0xffff) 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 = 0x0;
+ for(int ip=0; ip<kNplane; ip++){
+ if(fTrackletIndex[ip] == 0xffff) 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)
+{
+ 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 = 0x0;
+ for(Int_t ic=AliTRDseedV1::kNclusters; ic--;){
+ if(!(c = fTracklet[ip]->GetClusters(ic))) continue;
+
+ if(n<id){n++; continue;}
+ return c;
+ }
+ }
+ return 0x0;
+}
+
+//_______________________________________________________________
+Int_t AliTRDtrackV1::GetClusterIndex(Int_t id) const
+{
+ 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 = 0x0;
+ 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);
+}
+
+//_______________________________________________________________
+Int_t AliTRDtrackV1::GetSector() const
+{
+ return Int_t(GetAlpha()/AliTRDgeometry::GetAlpha() + (GetAlpha()>0. ? 0 : AliTRDgeometry::kNsector));
+}
+
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::IsEqual(const TObject *o) const
+{
+ 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;
}
//_______________________________________________________________
-Float_t AliTRDtrackV1::GetMomentum(Int_t plane) const
+Bool_t AliTRDtrackV1::IsElectron() const
+{
+ if(GetPID(0) > fReconstructor->GetRecoParam()->GetPIDThreshold(GetP())) return kTRUE;
+ return kFALSE;
+}
+
+
+//_____________________________________________________________________________
+void AliTRDtrackV1::MakeBackupTrack()
{
//
- // Get the momentum at a given plane
+ // Creates a backup track
//
- return plane >=0 && plane < 6 && fTrackletIndex[plane] >= 0 ? fTracklet[plane].GetMomentum() : -1.;
+ if(fBackupTrack) {
+ fBackupTrack->~AliTRDtrackV1();
+ new(fBackupTrack) AliTRDtrackV1((AliTRDtrackV1&)(*this));
+ return;
+ }
+ fBackupTrack = new AliTRDtrackV1((AliTRDtrackV1&)(*this));
}
-//_______________________________________________________________
-Double_t AliTRDtrackV1::GetPredictedChi2(const AliTRDseedV1 *trklt) const
+//_____________________________________________________________________________
+Int_t AliTRDtrackV1::GetProlongation(Double_t xk, Double_t &y, Double_t &z)
+{
+ //
+ // 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)
{
//
- // Get the predicted chi2
+ // 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]
+ //
- Double_t x = trklt->GetX0();
- Double_t p[2] = { trklt->GetYat(x)
- , trklt->GetZat(x) };
- Double_t cov[3];
- trklt->GetCovAt(x, cov);
+ if (xk == GetX()) {
+ return kTRUE;
+ }
- return AliExternalTrackParam::GetPredictedChi2(p, cov);
+ Double_t oldX = GetX();
+ Double_t oldY = GetY();
+ Double_t oldZ = GetZ();
+ Double_t bz = GetBz();
+
+ if (!AliExternalTrackParam::PropagateTo(xk,bz)) {
+ return kFALSE;
+ }
+
+ Double_t x = GetX();
+ Double_t y = GetY();
+ Double_t z = GetZ();
+
+ if (oldX < xk) {
+ xrho = -xrho;
+ if (IsStartedTimeIntegral()) {
+ Double_t l2 = TMath::Sqrt((x-oldX)*(x-oldX)
+ + (y-oldY)*(y-oldY)
+ + (z-oldZ)*(z-oldZ));
+ Double_t crv = AliExternalTrackParam::GetC(bz);
+ if (TMath::Abs(l2*crv) > 0.0001) {
+ // Make correction for curvature if neccesary
+ l2 = 0.5 * TMath::Sqrt((x-oldX)*(x-oldX)
+ + (y-oldY)*(y-oldY));
+ l2 = 2.0 * TMath::ASin(l2 * crv) / crv;
+ l2 = TMath::Sqrt(l2*l2 + (z-oldZ)*(z-oldZ));
+ }
+ AddTimeStep(l2);
+ }
+ }
+
+ 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 kTRUE;
}
-//_______________________________________________________________
-Bool_t AliTRDtrackV1::IsOwner() const
+//_____________________________________________________________________________
+Int_t AliTRDtrackV1::PropagateToR(Double_t r,Double_t step)
{
//
- // Check whether track owns the tracklets
+ // Propagate track to the radial position
+ // Rotation always connected to the last track position
//
- for (Int_t ip = 0; ip < AliESDtrack::kNPlane; ip++) {
- if(fTrackletIndex[ip] < 0) continue;
- if(!fTracklet[ip].IsOwner()) return kFALSE;
- }
- return kTRUE;
+ 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
+{
+ 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));
+
+ if(strcmp(o, "a")!=0) return;
+ 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--;
+ }
+ }
+
+ 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] != 0xffff) ncls += fTracklet[ip]->GetN();
+ }
+ AliKalmanTrack::SetNumberOfClusters(ncls);
+}
+
//_______________________________________________________________
-void AliTRDtrackV1::SetOwner(Bool_t own)
+void AliTRDtrackV1::SetOwner()
{
//
// Toggle ownership of tracklets
//
- for (Int_t ip = 0; ip < AliESDtrack::kNPlane; ip++) {
- if(fTrackletIndex[ip] < 0) continue;
- //AliInfo(Form("p[%d] index[%d]", ip, fTrackletIndex[ip]));
- fTracklet[ip].SetOwner(own);
- }
+ if(TestBit(kOwner)) return;
+ for (Int_t ip = 0; ip < kNplane; ip++) {
+ if(fTrackletIndex[ip] == 0xffff) continue;
+ fTracklet[ip] = new AliTRDseedV1(*fTracklet[ip]);
+ fTracklet[ip]->SetOwner();
+ }
+ SetBit(kOwner);
}
//_______________________________________________________________
-void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t plane, Int_t index)
+void AliTRDtrackV1::SetTracklet(AliTRDseedV1 *trklt, Int_t index)
{
//
// Set the tracklets
//
+ Int_t plane = trklt->GetPlane();
- if(plane < 0 || plane >=6) return;
- fTracklet[plane] = (*trklt);
- fTrackletIndex[plane] = index;
+ fTracklet[plane] = trklt;
+ fTrackletIndex[plane] = index;
}
//_______________________________________________________________
-Bool_t AliTRDtrackV1::Update(AliTRDseedV1 *trklt, Double_t chisq)
+void AliTRDtrackV1::SetTrackLow()
{
- //
- // Update track parameters
- //
+ const AliExternalTrackParam *op = dynamic_cast<const AliExternalTrackParam*>(this);
+ fTrackLow = fTrackLow ? new(fTrackLow) AliExternalTrackParam(*op) : new AliExternalTrackParam(*op);
+}
- 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]));
+//_______________________________________________________________
+void AliTRDtrackV1::SetTrackHigh(const AliExternalTrackParam *op)
+{
+ if(!op) op = dynamic_cast<const AliExternalTrackParam*>(this);
+ fTrackHigh = fTrackHigh ? new(fTrackHigh) AliExternalTrackParam(*op) : new AliExternalTrackParam(*op);
+}
+//_______________________________________________________________
+void AliTRDtrackV1::UnsetTracklet(Int_t plane)
+{
+ if(plane<0 && plane >= kNplane) return;
+ fTrackletIndex[plane] = 0xffff;
+ fTracklet[plane] = 0x0;
+}
+
+
+//_______________________________________________________________
+Bool_t AliTRDtrackV1::Update(Double_t *p, Double_t *cov, Double_t chi2)
+{
+ //
+ // Update track
+ //
if(!AliExternalTrackParam::Update(p, cov)) return kFALSE;
- //Print();
// Register info to track
-// Int_t n = GetNumberOfClusters();
-// fIndex[n] = index;
-// fClusters[n] = c;
- SetNumberOfClusters(GetNumberOfClusters()+trklt->GetN());
- SetChi2(GetChi2() + chisq);
-
- // update tracklet
- trklt->SetMomentum(GetP());
- trklt->SetSnp(GetSnp());
- trklt->SetTgl(GetTgl());
- return kTRUE;
+ SetNumberOfClusters();
+ SetChi2(GetChi2() + chi2);
+ return kTRUE;
}
//_______________________________________________________________
void AliTRDtrackV1::UpdateESDtrack(AliESDtrack *track)
{
//
- // Update the ESD track
+ // Update the TRD PID information in the ESD track
//
-
- // copy dEdx to ESD
- Float_t *dedx = 0x0;
- for (Int_t ip = 0; ip < AliESDtrack::kNPlane; ip++) {
- if(fTrackletIndex[ip] < 0) continue;
- fTracklet[ip].CookdEdx(AliESDtrack::kNSlice);
- dedx = fTracklet[ip].GetdEdx();
- for (Int_t js = 0; js < AliESDtrack::kNSlice; js++) track->SetTRDsignals(dedx[js], ip, js);
- //track->SetTRDTimBin(fTimBinPlane[i], i);
- }
- // copy PID to ESD
- track->SetTRDpid(fPID);
- track->SetTRDpidQuality(fPIDquality);
+ Int_t nslices = fReconstructor->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)*nPID);
+ // store raw signals
+ Float_t p, sp; Double_t spd;
+ for (Int_t ip = 0; ip < kNplane; ip++) {
+ if(fTrackletIndex[ip] == 0xffff) continue;
+ if(!fTracklet[ip]->HasPID()) continue;
+ 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