#include "TMath.h"
+#include "AliESDVertex.h"
#include "AliESDtrack.h"
#include "AliKalmanTrack.h"
+#include "AliTrackPointArray.h"
#include "AliLog.h"
ClassImp(AliESDtrack)
+void SetPIDValues(Float_t * dest, const Double_t * src, Int_t n) {
+ // This function copies "n" PID weights from "scr" to "dest"
+ // and normalizes their sum to 1 thus producing conditional probabilities.
+ // The negative weights are set to 0.
+ // In case all the weights are non-positive they are replaced by
+ // uniform probabilities
+
+ if (n<=0) return;
+
+ Float_t uniform = 1./(Float_t)n;
+
+ Float_t sum = 0;
+ for (Int_t i=0; i<n; i++)
+ if (src[i]>=0) {
+ sum+=src[i];
+ dest[i] = src[i];
+ }
+ else {
+ dest[i] = 0;
+ }
+
+ if(sum>0)
+ for (Int_t i=0; i<n; i++) dest[i] /= sum;
+ else
+ for (Int_t i=0; i<n; i++) dest[i] = uniform;
+}
+
//_______________________________________________________________________
AliESDtrack::AliESDtrack() :
- TObject(),
+ AliExternalTrackParam(),
fFlags(0),
fLabel(0),
fID(0),
fTrackLength(0),
- fD(0),
- fZ(0),
+ fD(0),fZ(0),
+ fCdd(0),fCdz(0),fCzz(0),
fStopVertex(0),
- fRalpha(0),
- fRx(0),
- fCalpha(0),
- fCx(0),
+ fCp(0),
fCchi2(1e10),
- fIalpha(0),
- fIx(0),
- fTalpha(0),
- fTx(0),
+ fIp(0),
+ fOp(0),
fITSchi2(0),
fITSncls(0),
fITSsignal(0),
fTRDsignal(0),
fTRDLabel(0),
fTRDQuality(0),
+ fTRDBudget(0),
fTRDtrack(0),
fTOFchi2(0),
fTOFindex(0),
fRICHtheta(0),
fRICHphi(0),
fRICHdx(0),
- fRICHdy(0)
+ fRICHdy(0),
+ fPoints(0)
{
//
// The default ESD constructor
fPHOSpos[0]=fPHOSpos[1]=fPHOSpos[2]=0.;
fEMCALpos[0]=fEMCALpos[1]=fEMCALpos[2]=0.;
Int_t i;
- for (i=0; i<5; i++) {
- fRp[i]=fCp[i]=fIp[i]=fTp[i]=0.;
- }
- for (i=0; i<15; i++) {
- fRc[i]=fCc[i]=fIc[i]=fTc[i]=0.;
- }
+ for (i=0;i<12;i++) fITSchi2MIP[i] =1e10;
for (i=0; i<6; i++) { fITSindex[i]=0; }
for (i=0; i<180; i++){ fTPCindex[i]=0; }
for (i=0; i<3;i++) { fKinkIndexes[i]=0;}
for (i=0; i<3;i++) { fV0Indexes[i]=-1;}
for (i=0; i<130; i++) { fTRDindex[i]=0; }
for (i=0;i<kNPlane;i++) {fTRDsignals[i]=0.; fTRDTimBin[i]=-1;}
- for (Int_t i=0;i<4;i++) {fTPCPoints[i]=-1;}
- for (Int_t i=0;i<3;i++) {fTOFLabel[i]=-1;}
- for (Int_t i=0;i<10;i++) {fTOFInfo[i]=-1;}
+ for (i=0;i<4;i++) {fTPCPoints[i]=-1;}
+ for (i=0;i<3;i++) {fTOFLabel[i]=-1;}
+ for (i=0;i<10;i++) {fTOFInfo[i]=-1;}
fTPCLabel = 0;
fTRDLabel = 0;
fTRDQuality =0;
+ fTRDBudget =0;
fITSLabel = 0;
fITStrack = 0;
fTRDtrack = 0;
//_______________________________________________________________________
AliESDtrack::AliESDtrack(const AliESDtrack& track):
- TObject(track),
+ AliExternalTrackParam(track),
fFlags(track.fFlags),
fLabel(track.fLabel),
fID(track.fID),
fTrackLength(track.fTrackLength),
- fD(track.fD),
- fZ(track.fZ),
+ fD(track.fD),fZ(track.fZ),
+ fCdd(track.fCdd),fCdz(track.fCdz),fCzz(track.fCzz),
fStopVertex(track.fStopVertex),
- fRalpha(track.fRalpha),
- fRx(track.fRx),
- fCalpha(track.fCalpha),
- fCx(track.fCx),
+ fCp(0),
fCchi2(track.fCchi2),
- fIalpha(track.fIalpha),
- fIx(track.fIx),
- fTalpha(track.fTalpha),
- fTx(track.fTx),
+ fIp(0),
+ fOp(0),
fITSchi2(track.fITSchi2),
fITSncls(track.fITSncls),
fITSsignal(track.fITSsignal),
fTRDsignal(track.fTRDsignal),
fTRDLabel(track.fTRDLabel),
fTRDQuality(track.fTRDQuality),
+ fTRDBudget(track.fTRDBudget),
fTRDtrack(0),
fTOFchi2(track.fTOFchi2),
fTOFindex(track.fTOFindex),
fRICHtheta(track.fRICHtheta),
fRICHphi(track.fRICHphi),
fRICHdx(track.fRICHdx),
- fRICHdy(track.fRICHdy)
+ fRICHdy(track.fRICHdy),
+ fPoints(track.fPoints)
{
//
//copy constructor
for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i] =track.fTrackTime[i];
for (Int_t i=0;i<AliPID::kSPECIES;i++) fR[i] =track.fR[i];
//
- for (Int_t i=0;i<5;i++) fRp[i] =track.fRp[i];
- for (Int_t i=0;i<15;i++) fRc[i] =track.fRc[i];
- //
- for (Int_t i=0;i<5;i++) fCp[i] =track.fCp[i];
- for (Int_t i=0;i<15;i++) fCc[i] =track.fCc[i];
- //
- for (Int_t i=0;i<5;i++) fIp[i] =track.fIp[i];
- for (Int_t i=0;i<15;i++) fIc[i] =track.fIc[i];
- //
- for (Int_t i=0;i<5;i++) fTp[i] =track.fTp[i];
- for (Int_t i=0;i<15;i++) fTc[i] =track.fTc[i];
- //
for (Int_t i=0;i<12;i++) fITSchi2MIP[i] =track.fITSchi2MIP[i];
for (Int_t i=0;i<6;i++) fITSindex[i]=track.fITSindex[i];
for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=track.fITSr[i];
for (Int_t i=0;i<AliPID::kSPECIESN;i++) fEMCALr[i]=track.fEMCALr[i];
//
for (Int_t i=0;i<AliPID::kSPECIES;i++) fRICHr[i]=track.fRICHr[i];
+
+ if (track.fCp) fCp=new AliExternalTrackParam(*track.fCp);
+ if (track.fIp) fIp=new AliExternalTrackParam(*track.fIp);
+ if (track.fOp) fOp=new AliExternalTrackParam(*track.fOp);
}
//_______________________________________________________________________
AliESDtrack::~AliESDtrack(){
// This is destructor according Coding Conventrions
//
//printf("Delete track\n");
+ delete fIp;
+ delete fOp;
+ delete fCp;
delete fITStrack;
- delete fTRDtrack;
+ delete fTRDtrack;
+ delete fPoints;
}
//_______________________________________________________________________
fStopVertex = 0;
// Reset track parameters constrained to the primary vertex
- fCalpha = 0;
- fCx = 0;
- for (Int_t i=0;i<5;i++) fCp[i] = 0;
- for (Int_t i=0;i<15;i++) fCc[i] = 0;
+ fCp = 0;
fCchi2 = 0;
// Reset track parameters at the inner wall of TPC
- fIalpha = 0;
- fIx = 0;
- for (Int_t i=0;i<5;i++) fIp[i] = 0;
- for (Int_t i=0;i<15;i++) fIc[i] = 0;
+ fIp = 0;
// Reset track parameters at the inner wall of the TRD
- fTalpha = 0;
- fTx = 0;
- for (Int_t i=0;i<5;i++) fTp[i] = 0;
- for (Int_t i=0;i<15;i++) fTc[i] = 0;
+ fOp = 0;
// Reset ITS track related information
fITSchi2 = 0;
fTRDLabel = 0;
fTRDtrack = 0;
fTRDQuality = 0;
+ fTRDBudget = 0;
// Reset TOF related track information
fTOFchi2 = 0;
fRICHdx = 0;
fRICHdy = 0;
+ fPoints = 0;
}
//_______________________________________________________________________
Double_t AliESDtrack::GetMass() const {
}
//_______________________________________________________________________
-Bool_t AliESDtrack::UpdateTrackParams(const AliKalmanTrack *t, ULong_t flags) {
+Bool_t AliESDtrack::UpdateTrackParams(const AliKalmanTrack *t, ULong_t flags){
//
// This function updates track's running parameters
//
SetIntegratedLength(t->GetIntegratedLength());
}
- fRalpha=t->GetAlpha();
- t->GetExternalParameters(fRx,fRp);
- t->GetExternalCovariance(fRc);
+ Set(*t);
switch (flags) {
case kTPCin: case kTPCrefit:
fTPCLabel = t->GetLabel();
- fIalpha=fRalpha;
- fIx=fRx;
- {
- Int_t i;
- for (i=0; i<5; i++) fIp[i]=fRp[i];
- for (i=0; i<15;i++) fIc[i]=fRc[i];
- }
+ if (!fIp) fIp=new AliExternalTrackParam(*t);
+ else fIp->Set(*t);
+
case kTPCout:
fTPCncls=t->GetNumberOfClusters();
fTRDsignal=t->GetPIDsignal();
break;
case kTRDbackup:
- t->GetExternalParameters(fTx,fTp);
- t->GetExternalCovariance(fTc);
- fTalpha = t->GetAlpha();
+ if (!fOp) fOp=new AliExternalTrackParam(*t);
+ else fOp->Set(*t);
fTRDncls0 = t->GetNumberOfClusters();
break;
case kTOFin:
return rc;
}
-//_______________________________________________________________________
-void
-AliESDtrack::SetConstrainedTrackParams(const AliKalmanTrack *t, Double_t chi2) {
- //
- // This function sets the constrained track parameters
- //
- Int_t i;
- Double_t x,buf[15];
- fCalpha=t->GetAlpha();
- t->GetExternalParameters(x,buf); fCx=x;
- for (i=0; i<5; i++) fCp[i]=buf[i];
- t->GetExternalCovariance(buf);
- for (i=0; i<15; i++) fCc[i]=buf[i];
- fCchi2=chi2;
-}
-
-
//_______________________________________________________________________
void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const {
//---------------------------------------------------------------------
// This function returns external representation of the track parameters
//---------------------------------------------------------------------
- x=fRx;
- for (Int_t i=0; i<5; i++) p[i]=fRp[i];
-}
-
-//_______________________________________________________________________
-Bool_t AliESDtrack::GetExternalParametersAt(Double_t x, Double_t p[5]) const {
- //---------------------------------------------------------------------
- // This function returns external representation of the track parameters
- // at the position given by the first argument
- //---------------------------------------------------------------------
- Double_t dx=x-fRx;
- Double_t f1=fRp[2], f2=f1 + dx*fRp[4]/AliKalmanTrack::GetConvConst();
-
- if (TMath::Abs(f2) >= 0.9999) return kFALSE;
-
- Double_t r1=TMath::Sqrt(1.- f1*f1), r2=TMath::Sqrt(1.- f2*f2);
- p[0] = fRp[0] + dx*(f1+f2)/(r1+r2);
- p[1] = fRp[1] + dx*(f1+f2)/(f1*r2 + f2*r1)*fRp[3];
- p[2] = f2;
- p[3] = fRp[3];
- p[4] = fRp[4];
-
- return kTRUE;
+ x=GetX();
+ for (Int_t i=0; i<5; i++) p[i]=GetParameter()[i];
}
//_______________________________________________________________________
//---------------------------------------------------------------------
// This function returns external representation of the cov. matrix
//---------------------------------------------------------------------
- for (Int_t i=0; i<15; i++) cov[i]=fRc[i];
+ for (Int_t i=0; i<15; i++) cov[i]=AliExternalTrackParam::GetCovariance()[i];
}
-
//_______________________________________________________________________
-void
-AliESDtrack::GetConstrainedExternalParameters(Double_t &x, Double_t p[5])const{
+Bool_t AliESDtrack::GetConstrainedExternalParameters
+ (Double_t &alpha, Double_t &x, Double_t p[5]) const {
//---------------------------------------------------------------------
// This function returns the constrained external track parameters
//---------------------------------------------------------------------
- x=fCx;
- for (Int_t i=0; i<5; i++) p[i]=fCp[i];
+ if (!fCp) return kFALSE;
+ alpha=fCp->GetAlpha();
+ x=fCp->GetX();
+ for (Int_t i=0; i<5; i++) p[i]=fCp->GetParameter()[i];
+ return kTRUE;
}
+
//_______________________________________________________________________
-void
+Bool_t
AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const {
//---------------------------------------------------------------------
// This function returns the constrained external cov. matrix
//---------------------------------------------------------------------
- for (Int_t i=0; i<15; i++) c[i]=fCc[i];
+ if (!fCp) return kFALSE;
+ for (Int_t i=0; i<15; i++) c[i]=fCp->GetCovariance()[i];
+ return kTRUE;
}
-
-Double_t AliESDtrack::GetP() const {
+Bool_t
+AliESDtrack::GetInnerExternalParameters
+ (Double_t &alpha, Double_t &x, Double_t p[5]) const {
//---------------------------------------------------------------------
- // This function returns the track momentum
- // Results for (nearly) straight tracks are meaningless !
+ // This function returns external representation of the track parameters
+ // at the inner layer of TPC
//---------------------------------------------------------------------
- if (TMath::Abs(fRp[4])<=0) return 0;
- Double_t pt=1./TMath::Abs(fRp[4]);
- return pt*TMath::Sqrt(1.+ fRp[3]*fRp[3]);
-}
-
-Bool_t Local2GlobalMomentum(Double_t p[3],Double_t alpha) {
- //----------------------------------------------------------------
- // This function performs local->global transformation of the
- // track momentum.
- // When called, the arguments are:
- // p[0] = 1/pt of the track;
- // p[1] = sine of local azim. angle of the track momentum;
- // p[2] = tangent of the track momentum dip angle;
- // alpha - rotation angle.
- // The result is returned as:
- // p[0] = px
- // p[1] = py
- // p[2] = pz
- // Results for (nearly) straight tracks are meaningless !
- //----------------------------------------------------------------
- if (TMath::Abs(p[0])<=0) return kFALSE;
- if (TMath::Abs(p[1])> 0.999999) return kFALSE;
-
- Double_t pt=1./TMath::Abs(p[0]);
- Double_t cs=TMath::Cos(alpha), sn=TMath::Sin(alpha);
- Double_t r=TMath::Sqrt(1 - p[1]*p[1]);
- p[0]=pt*(r*cs - p[1]*sn); p[1]=pt*(p[1]*cs + r*sn); p[2]=pt*p[2];
-
+ if (!fIp) return kFALSE;
+ alpha=fIp->GetAlpha();
+ x=fIp->GetX();
+ for (Int_t i=0; i<5; i++) p[i]=fIp->GetParameter()[i];
return kTRUE;
}
-Bool_t Local2GlobalPosition(Double_t r[3],Double_t alpha) {
- //----------------------------------------------------------------
- // This function performs local->global transformation of the
- // track position.
- // When called, the arguments are:
- // r[0] = local x
- // r[1] = local y
- // r[2] = local z
- // alpha - rotation angle.
- // The result is returned as:
- // r[0] = global x
- // r[1] = global y
- // r[2] = global z
- //----------------------------------------------------------------
- Double_t cs=TMath::Cos(alpha), sn=TMath::Sin(alpha), x=r[0];
- r[0]=x*cs - r[1]*sn; r[1]=x*sn + r[1]*cs;
-
+Bool_t
+AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const {
+ //---------------------------------------------------------------------
+ // This function returns external representation of the cov. matrix
+ // at the inner layer of TPC
+ //---------------------------------------------------------------------
+ if (!fIp) return kFALSE;
+ for (Int_t i=0; i<15; i++) cov[i]=fIp->GetCovariance()[i];
return kTRUE;
}
-Bool_t AliESDtrack::GetConstrainedPxPyPz(Double_t *p) const {
- //---------------------------------------------------------------------
- // This function returns the constrained global track momentum components
- // Results for (nearly) straight tracks are meaningless !
- //---------------------------------------------------------------------
- p[0]=fCp[4]; p[1]=fCp[2]; p[2]=fCp[3];
- return Local2GlobalMomentum(p,fCalpha);
-}
-
-Bool_t AliESDtrack::GetConstrainedXYZ(Double_t *r) const {
- //---------------------------------------------------------------------
- // This function returns the constrained global track position
- //---------------------------------------------------------------------
- r[0]=fCx; r[1]=fCp[0]; r[2]=fCp[1];
- return Local2GlobalPosition(r,fCalpha);
-}
-
-Bool_t AliESDtrack::GetPxPyPz(Double_t *p) const {
- //---------------------------------------------------------------------
- // This function returns the global track momentum components
- // Results for (nearly) straight tracks are meaningless !
- //---------------------------------------------------------------------
- p[0]=fRp[4]; p[1]=fRp[2]; p[2]=fRp[3];
- return Local2GlobalMomentum(p,fRalpha);
-}
-
-Bool_t AliESDtrack::GetXYZ(Double_t *r) const {
- //---------------------------------------------------------------------
- // This function returns the global track position
- //---------------------------------------------------------------------
- r[0]=fRx; r[1]=fRp[0]; r[2]=fRp[1];
- return Local2GlobalPosition(r,fRalpha);
-}
-
-void AliESDtrack::GetCovariance(Double_t cv[21]) const {
- //---------------------------------------------------------------------
- // This function returns the global covariance matrix of the track params
- //
- // Cov(x,x) ... : cv[0]
- // Cov(y,x) ... : cv[1] cv[2]
- // Cov(z,x) ... : cv[3] cv[4] cv[5]
- // Cov(px,x)... : cv[6] cv[7] cv[8] cv[9]
- // Cov(py,x)... : cv[10] cv[11] cv[12] cv[13] cv[14]
- // Cov(pz,x)... : cv[15] cv[16] cv[17] cv[18] cv[19] cv[20]
- //
- // Results for (nearly) straight tracks are meaningless !
- //---------------------------------------------------------------------
- if (TMath::Abs(fRp[4])<=0) {
- for (Int_t i=0; i<21; i++) cv[i]=0.;
- return;
- }
- if (TMath::Abs(fRp[2]) > 0.999999) {
- for (Int_t i=0; i<21; i++) cv[i]=0.;
- return;
- }
- Double_t pt=1./TMath::Abs(fRp[4]);
- Double_t cs=TMath::Cos(fRalpha), sn=TMath::Sin(fRalpha);
- Double_t r=TMath::Sqrt(1-fRp[2]*fRp[2]);
-
- Double_t m00=-sn, m10=cs;
- Double_t m23=-pt*(sn + fRp[2]*cs/r), m43=-pt*pt*(r*cs - fRp[2]*sn);
- Double_t m24= pt*(cs - fRp[2]*sn/r), m44=-pt*pt*(r*sn + fRp[2]*cs);
- Double_t m35=pt, m45=-pt*pt*fRp[3];
-
- cv[0]=fRc[0]*m00*m00;
- cv[1]=fRc[0]*m00*m10;
- cv[2]=fRc[0]*m10*m10;
- cv[3]=fRc[1]*m00;
- cv[4]=fRc[1]*m10;
- cv[5]=fRc[2];
- cv[6]=m00*(fRc[3]*m23+fRc[10]*m43);
- cv[7]=m10*(fRc[3]*m23+fRc[10]*m43);
- cv[8]=fRc[4]*m23+fRc[11]*m43;
- cv[9]=m23*(fRc[5]*m23+fRc[12]*m43)+m43*(fRc[12]*m23+fRc[14]*m43);
- cv[10]=m00*(fRc[3]*m24+fRc[10]*m44);
- cv[11]=m10*(fRc[3]*m24+fRc[10]*m44);
- cv[12]=fRc[4]*m24+fRc[11]*m44;
- cv[13]=m23*(fRc[5]*m24+fRc[12]*m44)+m43*(fRc[12]*m24+fRc[14]*m44);
- cv[14]=m24*(fRc[5]*m24+fRc[12]*m44)+m44*(fRc[12]*m24+fRc[14]*m44);
- cv[15]=m00*(fRc[6]*m35+fRc[10]*m45);
- cv[16]=m10*(fRc[6]*m35+fRc[10]*m45);
- cv[17]=fRc[7]*m35+fRc[11]*m45;
- cv[18]=m23*(fRc[8]*m35+fRc[12]*m45)+m43*(fRc[13]*m35+fRc[14]*m45);
- cv[19]=m24*(fRc[8]*m35+fRc[12]*m45)+m44*(fRc[13]*m35+fRc[14]*m45);
- cv[20]=m35*(fRc[9]*m35+fRc[13]*m45)+m45*(fRc[13]*m35+fRc[14]*m45);
-}
-
-Bool_t AliESDtrack::GetInnerPxPyPz(Double_t *p) const {
- //---------------------------------------------------------------------
- // This function returns the global track momentum components
- // af the entrance of the TPC
- //---------------------------------------------------------------------
- p[0]=fIp[4]; p[1]=fIp[2]; p[2]=fIp[3];
- return Local2GlobalMomentum(p,fIalpha);
-}
-
-Bool_t AliESDtrack::GetInnerXYZ(Double_t *r) const {
+Bool_t
+AliESDtrack::GetOuterExternalParameters
+ (Double_t &alpha, Double_t &x, Double_t p[5]) const {
//---------------------------------------------------------------------
- // This function returns the global track position
- // af the entrance of the TPC
+ // This function returns external representation of the track parameters
+ // at the inner layer of TRD
//---------------------------------------------------------------------
- if (fIx==0) return kFALSE;
- r[0]=fIx; r[1]=fIp[0]; r[2]=fIp[1];
- return Local2GlobalPosition(r,fIalpha);
+ if (!fOp) return kFALSE;
+ alpha=fOp->GetAlpha();
+ x=fOp->GetX();
+ for (Int_t i=0; i<5; i++) p[i]=fOp->GetParameter()[i];
+ return kTRUE;
}
-void AliESDtrack::GetInnerExternalParameters(Double_t &x, Double_t p[5]) const
-{
- //skowron
- //---------------------------------------------------------------------
- // This function returns external representation of the track parameters at Inner Layer of TPC
- //---------------------------------------------------------------------
- x=fIx;
- for (Int_t i=0; i<5; i++) p[i]=fIp[i];
-}
-void AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const
-{
- //skowron
+Bool_t
+AliESDtrack::GetOuterExternalCovariance(Double_t cov[15]) const {
//---------------------------------------------------------------------
- // This function returns external representation of the cov. matrix at Inner Layer of TPC
+ // This function returns external representation of the cov. matrix
+ // at the inner layer of TRD
//---------------------------------------------------------------------
- for (Int_t i=0; i<15; i++) cov[i]=fIc[i];
-
+ if (!fOp) return kFALSE;
+ for (Int_t i=0; i<15; i++) cov[i]=fOp->GetCovariance()[i];
+ return kTRUE;
}
-void AliESDtrack::GetTRDExternalParameters(Double_t &x, Double_t&alpha, Double_t p[5], Double_t cov[15]) const
+Int_t AliESDtrack::GetNcls(Int_t idet) const
{
+ // Get number of clusters by subdetector index
//
- //this function returns TRD parameters
- //
- x=fTx;
- alpha = fTalpha;
- for (Int_t i=0; i<5; i++) p[i]=fTp[i];
- for (Int_t i=0; i<15; i++) cov[i]=fTc[i];
-}
-
-Bool_t AliESDtrack::GetPxPyPzAt(Double_t x,Double_t *p) const {
- //---------------------------------------------------------------------
- // This function returns the global track momentum components
- // at the position "x" using the helix track approximation
- //---------------------------------------------------------------------
- p[0]=fRp[4];
- p[1]=fRp[2]+(x-fRx)*fRp[4]/AliKalmanTrack::GetConvConst();
- p[2]=fRp[3];
- return Local2GlobalMomentum(p,fRalpha);
+ Int_t ncls = 0;
+ switch(idet){
+ case 0:
+ ncls = fITSncls;
+ break;
+ case 1:
+ ncls = fTPCncls;
+ break;
+ case 2:
+ ncls = fTRDncls;
+ break;
+ case 3:
+ if (fTOFindex != 0)
+ ncls = 1;
+ break;
+ default:
+ break;
+ }
+ return ncls;
}
-Bool_t AliESDtrack::GetXYZAt(Double_t x, Double_t *r) const {
- //---------------------------------------------------------------------
- // This function returns the global track position
- // af the radius "x" using the helix track approximation
- //---------------------------------------------------------------------
- Double_t dx=x-fRx;
- Double_t f1=fRp[2], f2=f1 + dx*fRp[4]/AliKalmanTrack::GetConvConst();
-
- if (TMath::Abs(f2) >= 0.9999) return kFALSE;
-
- Double_t r1=TMath::Sqrt(1.- f1*f1), r2=TMath::Sqrt(1.- f2*f2);
- r[0] = x;
- r[1] = fRp[0] + dx*(f1+f2)/(r1+r2);
- r[2] = fRp[1] + dx*(f1+f2)/(f1*r2 + f2*r1)*fRp[3];
- return Local2GlobalPosition(r,fRalpha);
+Int_t AliESDtrack::GetClusters(Int_t idet, UInt_t *idx) const
+{
+ // Get cluster index array by subdetector index
+ //
+ Int_t ncls = 0;
+ switch(idet){
+ case 0:
+ ncls = GetITSclusters(idx);
+ break;
+ case 1:
+ ncls = GetTPCclusters((Int_t *)idx);
+ break;
+ case 2:
+ ncls = GetTRDclusters(idx);
+ break;
+ case 3:
+ if (fTOFindex != 0) {
+ idx[0] = GetTOFcluster();
+ ncls = 1;
+ }
+ break;
+ default:
+ break;
+ }
+ return ncls;
}
//_______________________________________________________________________
//_______________________________________________________________________
void AliESDtrack::SetITSpid(const Double_t *p) {
// Sets values for the probability of each particle type (in ITS)
- for (Int_t i=0; i<AliPID::kSPECIES; i++) fITSr[i]=p[i];
+ SetPIDValues(fITSr,p,AliPID::kSPECIES);
SetStatus(AliESDtrack::kITSpid);
}
if (good>(row1-row0)*0.5) density = Float_t(found)/Float_t(good);
return density;
}
+
//_______________________________________________________________________
void AliESDtrack::SetTPCpid(const Double_t *p) {
// Sets values for the probability of each particle type (in TPC)
- // normalize probabiluty to 1
- //
- //
-// Double_t sump=0;
-// for (Int_t i=0; i<AliPID::kSPECIES; i++) {
-// sump+=p[i];
-// }
-// for (Int_t i=0; i<AliPID::kSPECIES; i++) {
-// if (sump>0){
-// fTPCr[i]=p[i]/sump;
-// }
-// else{
-// fTPCr[i]=p[i];
-// }
-// }
- for (Int_t i=0; i<AliPID::kSPECIES; i++) fTPCr[i] = p[i];
+ SetPIDValues(fTPCr,p,AliPID::kSPECIES);
SetStatus(AliESDtrack::kTPCpid);
}
//_______________________________________________________________________
void AliESDtrack::SetTRDpid(const Double_t *p) {
// Sets values for the probability of each particle type (in TRD)
- for (Int_t i=0; i<AliPID::kSPECIES; i++) fTRDr[i]=p[i];
+ SetPIDValues(fTRDr,p,AliPID::kSPECIES);
SetStatus(AliESDtrack::kTRDpid);
}
//_______________________________________________________________________
void AliESDtrack::SetTOFpid(const Double_t *p) {
// Sets the probability of each particle type (in TOF)
- for (Int_t i=0; i<AliPID::kSPECIES; i++) fTOFr[i]=p[i];
+ SetPIDValues(fTOFr,p,AliPID::kSPECIES);
SetStatus(AliESDtrack::kTOFpid);
}
//_______________________________________________________________________
void AliESDtrack::SetPHOSpid(const Double_t *p) {
// Sets the probability of each particle type (in PHOS)
- for (Int_t i=0; i<AliPID::kSPECIESN; i++) fPHOSr[i]=p[i];
+ SetPIDValues(fPHOSr,p,AliPID::kSPECIESN);
SetStatus(AliESDtrack::kPHOSpid);
}
//_______________________________________________________________________
void AliESDtrack::SetEMCALpid(const Double_t *p) {
// Sets the probability of each particle type (in EMCAL)
- for (Int_t i=0; i<AliPID::kSPECIESN; i++) fEMCALr[i]=p[i];
+ SetPIDValues(fEMCALr,p,AliPID::kSPECIESN);
SetStatus(AliESDtrack::kEMCALpid);
}
//_______________________________________________________________________
void AliESDtrack::SetRICHpid(const Double_t *p) {
// Sets the probability of each particle type (in RICH)
- for (Int_t i=0; i<AliPID::kSPECIES; i++) fRICHr[i]=p[i];
+ SetPIDValues(fRICHr,p,AliPID::kSPECIES);
SetStatus(AliESDtrack::kRICHpid);
}
//_______________________________________________________________________
void AliESDtrack::SetESDpid(const Double_t *p) {
// Sets the probability of each particle type for the ESD track
- for (Int_t i=0; i<AliPID::kSPECIES; i++) fR[i]=p[i];
+ SetPIDValues(fR,p,AliPID::kSPECIES);
SetStatus(AliESDtrack::kESDpid);
}
for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fR[i];
}
+//_______________________________________________________________________
+Bool_t AliESDtrack::RelateToVertex
+(const AliESDVertex *vtx, Double_t b, Double_t maxd) {
+ //
+ // Try to relate this track to the vertex "vtx",
+ // if the (rough) transverse impact parameter is not bigger then "maxd".
+ // Magnetic field is "b" (kG).
+ //
+ // a) The track gets extapolated to the DCA to the vertex.
+ // b) The impact parameters and their covariance matrix are calculated.
+ // c) An attempt to constrain this track to the vertex is done.
+ //
+ // In the case of success, the returned value is kTRUE
+ // (otherwise, it's kFALSE)
+ //
+ Double_t alpha=GetAlpha();
+ Double_t sn=TMath::Sin(alpha), cs=TMath::Cos(alpha);
+ Double_t x=GetX(), y=GetParameter()[0], snp=GetParameter()[2];
+ Double_t xv= vtx->GetXv()*cs + vtx->GetYv()*sn;
+ Double_t yv=-vtx->GetXv()*sn + vtx->GetYv()*cs, zv=vtx->GetZv();
+ x-=xv; y-=yv;
+
+ //Estimate the impact parameter neglecting the track curvature
+ Double_t d=TMath::Abs(x*snp - y*TMath::Sqrt(1.- snp*snp));
+ if (d > maxd) return kFALSE;
+
+ //Propagate to the DCA
+ Double_t crv=0.299792458e-3*b*GetParameter()[4];
+ Double_t tgfv=-(crv*x - snp)/(crv*y + TMath::Sqrt(1.-snp*snp));
+ sn=tgfv/TMath::Sqrt(1.+ tgfv*tgfv); cs=TMath::Sqrt(1.+ sn*sn);
+
+ x = xv*cs + yv*sn;
+ yv=-xv*sn + yv*cs; xv=x;
+
+ if (!Propagate(alpha+TMath::ASin(sn),xv,b)) return kFALSE;
+
+ fD = GetParameter()[0] - yv;
+ fZ = GetParameter()[1] - zv;
+
+ Double_t cov[6]; vtx->GetCovMatrix(cov);
+ fCdd = GetCovariance()[0] + cov[2]; // neglecting non-diagonals
+ fCdz = GetCovariance()[1]; // in the vertex's
+ fCzz = GetCovariance()[2] + cov[5]; // covariance matrix
+
+ {//Try to constrain
+ Double_t p[2]={yv,zv}, c[3]={cov[2],0.,cov[5]};
+ Double_t chi2=GetPredictedChi2(p,c);
+
+ if (chi2>77.) return kFALSE;
+
+ AliExternalTrackParam tmp(*this);
+ if (!tmp.Update(p,c)) return kFALSE;
+
+ fCchi2=chi2;
+ if (!fCp) fCp=new AliExternalTrackParam();
+ new (fCp) AliExternalTrackParam(tmp);
+ }
+
+ return kTRUE;
+}
+
//_______________________________________________________________________
void AliESDtrack::Print(Option_t *) const {
// Prints info on the track
printf("\n signal = %f\n", GetTOFsignal()) ;
}
if( IsOn(kRICHpid) ){
- printf("From TOF: ") ;
+ printf("From RICH: ") ;
GetRICHpid(p) ;
for(index = 0 ; index < AliPID::kSPECIES; index++)
printf("%f, ", p[index]) ;
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff