/* $Id$ */
//-------------------------------------------------------------------------
-// AOD track implementation of AliVParticle
+// AOD track implementation of AliVTrack
// Author: Markus Oldenburg, CERN
// Markus.Oldenburg@cern.ch
//-------------------------------------------------------------------------
#include "AliLog.h"
+#include "AliExternalTrackParam.h"
+#include "AliVVertex.h"
#include "AliAODTrack.h"
ClassImp(AliAODTrack)
//______________________________________________________________________________
AliAODTrack::AliAODTrack() :
- AliVParticle(),
+ AliVTrack(),
+ fRAtAbsorberEnd(0.),
fChi2perNDF(-999.),
fChi2MatchTrigger(0.),
fFlags(0),
fLabel(-999),
fITSMuonClusterMap(0),
fFilterMap(0),
+ fTPCClusterMap(),
+ fTPCSharedMap(),
+ fTPCnclsF(0),
fID(-999),
fCharge(-99),
fType(kUndef),
AODTrk_t ttype,
UInt_t selectInfo,
Float_t chi2perNDF) :
- AliVParticle(),
+ AliVTrack(),
+ fRAtAbsorberEnd(0.),
fChi2perNDF(chi2perNDF),
fChi2MatchTrigger(0.),
fFlags(0),
fLabel(label),
fITSMuonClusterMap(0),
fFilterMap(selectInfo),
+ fTPCClusterMap(),
+ fTPCSharedMap(),
+ fTPCnclsF(0),
fID(id),
fCharge(charge),
fType(ttype),
AODTrk_t ttype,
UInt_t selectInfo,
Float_t chi2perNDF) :
- AliVParticle(),
+ AliVTrack(),
+ fRAtAbsorberEnd(0.),
fChi2perNDF(chi2perNDF),
fChi2MatchTrigger(0.),
fFlags(0),
fLabel(label),
fITSMuonClusterMap(0),
fFilterMap(selectInfo),
+ fTPCClusterMap(),
+ fTPCSharedMap(),
+ fTPCnclsF(0),
fID(id),
fCharge(charge),
fType(ttype),
{
// destructor
delete fCovMatrix;
+ delete fDetPid;
}
//______________________________________________________________________________
AliAODTrack::AliAODTrack(const AliAODTrack& trk) :
- AliVParticle(trk),
+ AliVTrack(trk),
+ fRAtAbsorberEnd(trk.fRAtAbsorberEnd),
fChi2perNDF(trk.fChi2perNDF),
fChi2MatchTrigger(trk.fChi2MatchTrigger),
fFlags(trk.fFlags),
fLabel(trk.fLabel),
fITSMuonClusterMap(trk.fITSMuonClusterMap),
fFilterMap(trk.fFilterMap),
+ fTPCClusterMap(trk.fTPCClusterMap),
+ fTPCSharedMap(trk.fTPCSharedMap),
+ fTPCnclsF(trk.fTPCnclsF),
fID(trk.fID),
fCharge(trk.fCharge),
fType(trk.fType),
// Assignment operator
if(this!=&trk) {
- AliVParticle::operator=(trk);
+ AliVTrack::operator=(trk);
trk.GetP(fMomentum);
trk.GetPosition(fPosition);
SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA());
SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA());
+ fRAtAbsorberEnd = trk.fRAtAbsorberEnd;
+
fChi2perNDF = trk.fChi2perNDF;
fChi2MatchTrigger = trk.fChi2MatchTrigger;
// Returns the most probable PID array element.
Int_t nPID = 10;
- if (fPID) {
- AODTrkPID_t loc = kUnknown;
- Double_t max = 0.;
- Bool_t allTheSame = kTRUE;
-
- for (Int_t iPID = 0; iPID < nPID; iPID++) {
- if (fPID[iPID] >= max) {
- if (fPID[iPID] > max) {
- allTheSame = kFALSE;
- max = fPID[iPID];
- loc = (AODTrkPID_t)iPID;
- } else {
- allTheSame = kTRUE;
- }
+ AODTrkPID_t loc = kUnknown;
+ Double_t max = 0.;
+ Bool_t allTheSame = kTRUE;
+
+ for (Int_t iPID = 0; iPID < nPID; iPID++) {
+ if (fPID[iPID] >= max) {
+ if (fPID[iPID] > max) {
+ allTheSame = kFALSE;
+ max = fPID[iPID];
+ loc = (AODTrkPID_t)iPID;
+ } else {
+ allTheSame = kTRUE;
}
}
-
- return allTheSame ? kUnknown : loc;
- } else {
- return kUnknown;
}
+ return allTheSame ? kUnknown : loc;
}
//______________________________________________________________________________
printf(" charge = %d\n", Charge());
}
-void AliAODTrack::SetMatchTrigger(Int_t matchTrig){
-//
-// Set the MUON trigger information
+//______________________________________________________________________________
+void AliAODTrack::SetMatchTrigger(Int_t matchTrig)
+{
+ // Set the MUON trigger information
switch(matchTrig){
case 0: // 0 track does not match trigger
fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff;
}
}
-Int_t AliAODTrack::HitsMT(Int_t istation, Int_t iplane, Char_t *cathode){
-//
-// Retrieve hit information for MUON identified by (station, plane, cathode)
- if(cathode){
- if(cathode[0]=='x'||cathode[0]=='X'){
- if(istation==1){
- if(iplane==1)
- return (fITSMuonClusterMap&0x8000)?1:0;
- else if(iplane==2)
- return (fITSMuonClusterMap&0x4000)?1:0;
- else
- return 0;
- }else if(istation==2){
- if(iplane==1)
- return (fITSMuonClusterMap&0x2000)?1:0;
- else if(iplane==2)
- return (fITSMuonClusterMap&0x1000)?1:0;
- else
- return 0;
- }else{
- return 0;
- }
- }else if(cathode[0]=='y'||cathode[0]=='Y'){
- if(istation==1){
- if(iplane==1)
- return (fITSMuonClusterMap&0x0800)?1:0;
- else if(iplane==2)
- return (fITSMuonClusterMap&0x0400)?1:0;
- else
- return 0;
- }else if(istation==2){
- if(iplane==1)
- return (fITSMuonClusterMap&0x0200)?1:0;
- else if(iplane==2)
- return (fITSMuonClusterMap&0x0100)?1:0;
- else
- return 0;
- }else{
- return 0;
- }
- }else{
- return 0;
- }
- }else{
- if(istation==1){
- if(iplane==1)
- return (HitsMT(1,1,"X")||HitsMT(1,1,"Y"))?1:0;
- else if(iplane==2)
- return (HitsMT(1,2,"X")||HitsMT(1,2,"Y"))?1:0;
- else
- return 0;
- }else if(istation==2){
- if(iplane==1)
- return (HitsMT(2,1,"X")||HitsMT(2,1,"Y"))?1:0;
- else if(iplane==2)
- return (HitsMT(2,2,"X")||HitsMT(2,2,"Y"))?1:0;
- else
- return 0;
- }else{
- return 0;
- }
+//______________________________________________________________________________
+Bool_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber, Int_t cathode) const
+{
+ // return kTRUE if the track fires the given tracking or trigger chamber.
+ // If the chamber is a trigger one:
+ // - if cathode = 0 or 1, the track matches the corresponding cathode
+ // - if cathode = -1, the track matches both cathodes
+
+ if (MuonChamber < 0) return kFALSE;
+
+ if (MuonChamber < 10) return TESTBIT(GetMUONClusterMap(), MuonChamber);
+
+ if (MuonChamber < 14) {
+
+ if (cathode < 0) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber) &&
+ TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+4);
+
+ if (cathode < 2) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+(1-cathode)*4);
+
}
+
+ return kFALSE;
}
-Int_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber){
- //
- // Retrieve hit information for MUON Tracker/Trigger Chamber
- // WARNING: chamber number start from 1 instead of 0
+//______________________________________________________________________________
+Bool_t AliAODTrack::MatchTriggerDigits() const
+{
+ // return kTRUE if the track matches a digit on both planes of at least 2 trigger chambers
- if (MuonChamber > 0 && MuonChamber < 11) {
- return ((GetMUONClusterMap() & BIT(MuonChamber-1)) != 0) ? 1 : 0;
- } else {
- switch(MuonChamber){
- case 11:
- return HitsMT(1,1);
- case 12:
- return HitsMT(1,2);
- case 13:
- return HitsMT(2,1);
- case 14:
- return HitsMT(2,2);
- default:
- printf("Unknown MUON chamber: %d\n",MuonChamber);
- return 0;
- }
+ Int_t nMatchedChambers = 0;
+ for (Int_t ich=10; ich<14; ich++) if (HitsMuonChamber(ich)) nMatchedChambers++;
+
+ return (nMatchedChambers >= 2);
+}
+
+//______________________________________________________________________________
+Bool_t AliAODTrack::PropagateToDCA(const AliVVertex *vtx,
+ Double_t b, Double_t maxd, Double_t dz[2], Double_t covar[3])
+{
+ // compute impact parameters to the vertex vtx and their covariance matrix
+ // b is the Bz, needed to propagate correctly the track to vertex
+ // only the track parameters are update after the propagation (pos and mom),
+ // not the covariance matrix. This is OK for propagation over short distance
+ // inside the beam pipe.
+ // return kFALSE is something went wrong
+
+ // convert to AliExternalTrackParam
+ AliExternalTrackParam etp(this);
+
+ Float_t xstart = etp.GetX();
+ if(xstart>3.) {
+ AliError("This method can be used only for propagation inside the beam pipe");
+ return kFALSE;
}
+
+ if(!etp.PropagateToDCA(vtx,b,maxd,dz,covar)) return kFALSE;
+
+ // update track position and momentum
+ Double_t mom[3];
+ etp.GetPxPyPz(mom);
+ SetP(mom,kTRUE);
+ etp.GetXYZ(mom);
+ SetPosition(mom,kFALSE);
+
+
+ return kTRUE;
}
-Bool_t AliAODTrack::PropagateTo(Double_t xk, Double_t b) {
- //----------------------------------------------------------------
- // Propagate this track to the plane X=xk (cm) in the field "b" (kG)
- // This is in local coordinates!!!
- //----------------------------------------------------------------
-
- Double_t alpha = 0.;
- Double_t localP[3] = {Px(), Py(), Pz()}; // set global (sic!) p
- Global2LocalMomentum(localP, Charge(), alpha); // convert global to local momentum
-
- AliAODVertex *origin = (AliAODVertex*)fProdVertex.GetObject();
- Double_t localX[3] = {origin->GetX(), origin->GetY(), origin->GetZ()}; // set global (sic!) location of first track point
- Global2LocalPosition(localX, alpha); // convert global to local position
-
- Double_t &fX = localX[0];
-
- Double_t dx=xk-fX;
- if (TMath::Abs(dx)<=kAlmost0) return kTRUE;
-
- Double_t crv=localP[0]*b*kB2C;
- if (TMath::Abs(b) < kAlmost0Field) crv=0.;
-
- Double_t f1=localP[1], f2=f1 + crv*dx;
- if (TMath::Abs(f1) >= kAlmost1) return kFALSE;
- if (TMath::Abs(f2) >= kAlmost1) return kFALSE;
-
- Double_t &fP0=localX[1], &fP1=localX[2], &fP2=localP[0], &fP3=localP[1], &fP4=localP[2];
- /* covariance matrix to be fixed!
- Double_t
- &fC00=fC[0],
- &fC10=fC[1], &fC11=fC[2],
- &fC20=fC[3], &fC21=fC[4], &fC22=fC[5],
- &fC30=fC[6], &fC31=fC[7], &fC32=fC[8], &fC33=fC[9],
- &fC40=fC[10], &fC41=fC[11], &fC42=fC[12], &fC43=fC[13], &fC44=fC[14];
- */
- Double_t r1=TMath::Sqrt(1.- f1*f1), r2=TMath::Sqrt(1.- f2*f2);
-
- fX=xk;
- fP0 += dx*(f1+f2)/(r1+r2);
- fP1 += dx*(r2 + f2*(f1+f2)/(r1+r2))*fP3;
- fP2 += dx*crv;
-
- //f = F - 1
-
- //Double_t f02= dx/(r1*r1*r1);
- Double_t cc=crv/fP4;
- Double_t f04=0.5*dx*dx/(r1*r1*r1); f04*=cc;
- //Double_t f12= dx*fP3*f1/(r1*r1*r1);
- Double_t f14=0.5*dx*dx*fP3*f1/(r1*r1*r1); f14*=cc;
- //Double_t f13= dx/r1;
- Double_t f24= dx; f24*=cc;
+//______________________________________________________________________________
+Bool_t AliAODTrack::GetPxPyPz(Double_t p[3]) const
+{
+ //---------------------------------------------------------------------
+ // This function returns the global track momentum components
+ //---------------------------------------------------------------------
+ p[0]=Px(); p[1]=Py(); p[2]=Pz();
+ return kTRUE;
+}
+
+//______________________________________________________________________________
+Float_t AliAODTrack::GetTPCClusterInfo(Int_t nNeighbours/*=3*/, Int_t type/*=0*/, Int_t row0, Int_t row1) const
+{
+ //
+ // TPC cluster information
+ // type 0: get fraction of found/findable clusters with neighbourhood definition
+ // 1: findable clusters with neighbourhood definition
+ // 2: found clusters
+ //
+ // definition of findable clusters:
+ // a cluster is defined as findable if there is another cluster
+ // within +- nNeighbours pad rows. The idea is to overcome threshold
+ // effects with a very simple algorithm.
+ //
- /* covariance matrix to be fixed!
- //b = C*ft
- Double_t b00=f02*fC20 + f04*fC40, b01=f12*fC20 + f14*fC40 + f13*fC30;
- Double_t b02=f24*fC40;
- Double_t b10=f02*fC21 + f04*fC41, b11=f12*fC21 + f14*fC41 + f13*fC31;
- Double_t b12=f24*fC41;
- Double_t b20=f02*fC22 + f04*fC42, b21=f12*fC22 + f14*fC42 + f13*fC32;
- Double_t b22=f24*fC42;
- Double_t b40=f02*fC42 + f04*fC44, b41=f12*fC42 + f14*fC44 + f13*fC43;
- Double_t b42=f24*fC44;
- Double_t b30=f02*fC32 + f04*fC43, b31=f12*fC32 + f14*fC43 + f13*fC33;
- Double_t b32=f24*fC43;
+ if (type==2) return fTPCClusterMap.CountBits();
- //a = f*b = f*C*ft
- Double_t a00=f02*b20+f04*b40,a01=f02*b21+f04*b41,a02=f02*b22+f04*b42;
- Double_t a11=f12*b21+f14*b41+f13*b31,a12=f12*b22+f14*b42+f13*b32;
- Double_t a22=f24*b42;
-
- //F*C*Ft = C + (b + bt + a)
- fC00 += b00 + b00 + a00;
- fC10 += b10 + b01 + a01;
- fC20 += b20 + b02 + a02;
- fC30 += b30;
- fC40 += b40;
- fC11 += b11 + b11 + a11;
- fC21 += b21 + b12 + a12;
- fC31 += b31;
- fC41 += b41;
- fC22 += b22 + b22 + a22;
- fC32 += b32;
- fC42 += b42;
- */
+ Int_t found=0;
+ Int_t findable=0;
+ Int_t last=-nNeighbours;
- Local2GlobalMomentum(localP, alpha); // convert local to global momentum
- SetP(localP);
-
- return kTRUE;
+ for (Int_t i=row0; i<row1; ++i){
+ //look to current row
+ if (fTPCClusterMap[i]) {
+ last=i;
+ ++found;
+ ++findable;
+ continue;
+ }
+ //look to nNeighbours before
+ if ((i-last)<=nNeighbours) {
+ ++findable;
+ continue;
+ }
+ //look to nNeighbours after
+ for (Int_t j=i+1; j<i+1+nNeighbours; ++j){
+ if (fTPCClusterMap[j]){
+ ++findable;
+ break;
+ }
+ }
+ }
+ if (type==1) return findable;
+
+ if (type==0){
+ Float_t fraction=0;
+ if (findable>0)
+ fraction=(Float_t)found/(Float_t)findable;
+ else
+ fraction=0;
+ return fraction;
+ }
+ return 0; // undefined type - default value
}
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff