[u/mrichter/AliRoot.git] / STEER / AliAODTrack.cxx

/**************************************************************************
 * Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

//-------------------------------------------------------------------------
//     AOD track base class
//     Author: Markus Oldenburg, CERN
//-------------------------------------------------------------------------

#include "AliAODTrack.h"

ClassImp(AliAODTrack)

//______________________________________________________________________________
AliAODTrack::AliAODTrack() : 
  AliVirtualParticle(),
  fChi2perNDF(-999.),
  fID(-999),
  fLabel(-999),
  fCovMatrix(NULL),
  fProdVertex(0x0),
  fCharge(-99),
  fITSMuonClusterMap(0),
  fType(kUndef),
  fChi2MatchTrigger(0.)
{
  // default constructor

  SetP();
  SetPosition((Float_t*)NULL);
  SetPID((Float_t*)NULL);
}

//______________________________________________________________________________
AliAODTrack::AliAODTrack(Int_t id,
			 Int_t label, 
			 Double_t p[3],
			 Bool_t cartesian,
			 Double_t x[3],
			 Bool_t isDCA,
			 Double_t covMatrix[21],
			 Short_t charge,
			 UChar_t itsClusMap,
			 Double_t pid[10],
			 AliAODVertex *prodVertex,
			 Bool_t usedForVtxFit,
			 Bool_t usedForPrimVtxFit,
			 AODTrk_t ttype) :
  AliVirtualParticle(),
  fChi2perNDF(-999.),
  fID(id),
  fLabel(label),
  fCovMatrix(NULL),
  fProdVertex(prodVertex),
  fCharge(charge),
  fITSMuonClusterMap(itsClusMap),
  fType(ttype),
  fChi2MatchTrigger(0.)
{
  // constructor
 
  SetP(p, cartesian);
  SetPosition(x, isDCA);
  SetUsedForVtxFit(usedForVtxFit);
  SetUsedForPrimVtxFit(usedForPrimVtxFit);
  if(covMatrix) SetCovMatrix(covMatrix);
  SetPID(pid);

}

//______________________________________________________________________________
AliAODTrack::AliAODTrack(Int_t id,
			 Int_t label, 
			 Float_t p[3],
			 Bool_t cartesian,
			 Float_t x[3],
			 Bool_t isDCA,
			 Float_t covMatrix[21],
			 Short_t charge,
			 UChar_t itsClusMap,
			 Float_t pid[10],
			 AliAODVertex *prodVertex,
			 Bool_t usedForVtxFit,
			 Bool_t usedForPrimVtxFit,
			 AODTrk_t ttype) :
  AliVirtualParticle(),
  fChi2perNDF(-999.),
  fID(id),
  fLabel(label),
  fCovMatrix(NULL),
  fProdVertex(prodVertex),
  fCharge(charge),
  fITSMuonClusterMap(itsClusMap),
  fType(ttype),
  fChi2MatchTrigger(0.)
{
  // constructor
 
  SetP(p, cartesian);
  SetPosition(x, isDCA);
  SetUsedForVtxFit(usedForVtxFit);
  SetUsedForPrimVtxFit(usedForPrimVtxFit);
  if(covMatrix) SetCovMatrix(covMatrix);
  SetPID(pid);
}

//______________________________________________________________________________
AliAODTrack::~AliAODTrack() 
{
  // destructor
  delete fCovMatrix;
}


//______________________________________________________________________________
AliAODTrack::AliAODTrack(const AliAODTrack& trk) :
  AliVirtualParticle(trk),
  fChi2perNDF(trk.fChi2perNDF),
  fID(trk.fID),
  fLabel(trk.fLabel),
  fCovMatrix(NULL),
  fProdVertex(trk.fProdVertex),
  fCharge(trk.fCharge),
  fITSMuonClusterMap(trk.fITSMuonClusterMap),
  fType(trk.fType),
  fChi2MatchTrigger(0.)
{
  // Copy constructor

  trk.GetP(fMomentum);
  trk.GetPosition(fPosition);
  SetUsedForVtxFit(trk.GetUsedForVtxFit());
  SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit());
  if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix);
  SetPID(trk.fPID);

}

//______________________________________________________________________________
AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk)
{
  // Assignment operator
  if(this!=&trk) {

    AliVirtualParticle::operator=(trk);

    trk.GetP(fMomentum);
    trk.GetPosition(fPosition);
    trk.GetPID(fPID);

    fChi2perNDF = trk.fChi2perNDF;

    fID = trk.fID;
    fLabel = trk.fLabel;    
    
    delete fCovMatrix;
    if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix);
    else fCovMatrix=NULL;
    fProdVertex = trk.fProdVertex;

    fCharge = trk.fCharge;
    fITSMuonClusterMap = trk.fITSMuonClusterMap;
    SetUsedForVtxFit(trk.GetUsedForVtxFit());
    SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit());
    fType = trk.fType;
  }

  return *this;
}

//______________________________________________________________________________
Double_t AliAODTrack::M(AODTrkPID_t pid) const
{
  // Returns the mass.
  // In the case of elementary particles the hard coded mass values were taken 
  // from the PDG. In all cases the errors on the values do not affect 
  // the last digit.
  

  switch (pid) {

  case kElectron :
    return 0.000510999;
    break;

  case kMuon :
    return 0.1056584;
    break;

  case kPion :
    return 0.13957;
    break;

  case kKaon :
    return 0.4937;
    break;

  case kProton :
    return 0.9382720;
    break;

  case kDeuteron :
    return 1.8756;
    break;

  case kTriton :
    return 2.8089;
    break;

  case kHelium3 :
    return 2.8084;
    break;

  case kAlpha :
    return 3.7274;
    break;

  case kUnknown :
    return -999.;
    break;

  default :
    return -999.;
  }
}

//______________________________________________________________________________
Double_t AliAODTrack::E(AODTrkPID_t pid) const
{
  // Returns the energy of the particle of a given pid.
  
  if (pid != kUnknown) { // particle was identified
    Double_t m = M(pid);
    return TMath::Sqrt(P()*P() + m*m);
  } else { // pid unknown
    return -999.;
  }
}

//______________________________________________________________________________
Double_t AliAODTrack::Y(AODTrkPID_t pid) const
{
  // Returns the energy of the particle of a given pid.
  
  if (pid != kUnknown) { // particle was identified
    Double_t e = E(pid);
    Double_t pz = Pz();
    if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz
      return 0.5*TMath::Log((e+pz)/(e-pz));
    } else { // energy not known or equal to pz
      return -999.;
    }
  } else { // pid unknown
    return -999.;
  }
}

//______________________________________________________________________________
Double_t AliAODTrack::Y(Double_t m) const
{
  // Returns the energy of the particle of a given mass.
  
  if (m >= 0.) { // mass makes sense
    Double_t e = E(m);
    Double_t pz = Pz();
    if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz
      return 0.5*TMath::Log((e+pz)/(e-pz));
    } else { // energy not known or equal to pz
      return -999.;
    }
  } else { // pid unknown
    return -999.;
  }
}

//______________________________________________________________________________
AliAODTrack::AODTrkPID_t AliAODTrack::GetMostProbablePID() const 
{
  // 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;
	}
      }
    }
    
    return allTheSame ? kUnknown : loc;
  } else {
    return kUnknown;
  }
}

//______________________________________________________________________________
void AliAODTrack::ConvertAliPIDtoAODPID()
{
  // Converts AliPID array.
  // The numbering scheme is the same for electrons, muons, pions, kaons, and protons.
  // Everything else has to be set to zero.

  fPID[kDeuteron] = 0.;
  fPID[kTriton] = 0.;
  fPID[kHelium3] = 0.;
  fPID[kAlpha] = 0.;
  fPID[kUnknown] = 0.;
  
  return;
}


//______________________________________________________________________________
template <class T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian) 
{
  // set the momentum

  if (p) {
    if (cartesian) {
      Double_t pt2 = p[0]*p[0] + p[1]*p[1];
      Double_t P = TMath::Sqrt(pt2 + p[2]*p[2]);
      
      fMomentum[0] = TMath::Sqrt(pt2); // pt
      fMomentum[1] = (pt2 != 0.) ? TMath::ATan2(p[1], p[0]) : -999; // phi
      fMomentum[2] = (P != 0.) ? TMath::ACos(p[2]/P) : -999.; // theta
    } else {
      fMomentum[0] = p[0];  // pt
      fMomentum[1] = p[1];  // phi
      fMomentum[2] = p[2];  // theta
    }
  } else {
    fMomentum[0] = -999.;
    fMomentum[1] = -999.;
    fMomentum[2] = -999.;
  }
}

//______________________________________________________________________________
template <class T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca) 
{
  // set the position

  if (x) {
    if (!dca) {
      ResetBit(kIsDCA);

      fPosition[0] = x[0];
      fPosition[1] = x[1];
      fPosition[2] = x[2];
    } else {
      SetBit(kIsDCA);
      // don't know any better yet
      fPosition[0] = -999.;
      fPosition[1] = -999.;
      fPosition[2] = -999.;
    }
  } else {
    ResetBit(kIsDCA);

    fPosition[0] = -999.;
    fPosition[1] = -999.;
    fPosition[2] = -999.;
  }
}

//______________________________________________________________________________
void AliAODTrack::SetDCA(Double_t d, Double_t z) 
{
  // set the dca
  fPosition[0] = d;
  fPosition[1] = z;
  fPosition[2] = 0.;
  SetBit(kIsDCA);
}

//______________________________________________________________________________
void AliAODTrack::Print(Option_t* /* option */) const
{
  // prints information about AliAODTrack

  printf("Object name: %s   Track type: %s\n", GetName(), GetTitle()); 
  printf("        px = %f\n", Px());
  printf("        py = %f\n", Py());
  printf("        pz = %f\n", Pz());
  printf("        pt = %f\n", Pt());
  printf("      1/pt = %f\n", OneOverPt());
  printf("     theta = %f\n", Theta());
  printf("       phi = %f\n", Phi());
  printf("  chi2/NDF = %f\n", Chi2perNDF());
  printf("    charge = %d\n", Charge());
  printf(" PID object: %p\n", PID());
}

void AliAODTrack::SetMatchTrigger(Int_t MatchTrigger){
  switch(MatchTrigger){
    case 0: // 0 track does not match trigger
      fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff;
      break;
    case 1: // 1 track match but does not pass pt cut
      fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x40000000;
      break;
    case 2: // 2 track match Low pt cut
      fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x80000000;
      break;
    case 3: // 3 track match High pt cut
      fITSMuonClusterMap=fITSMuonClusterMap|0xc0000000;
      break;
    default:
      fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff;
      printf("AliAODTrack::SetMatchTrigger unknown case for MatchTrigger: %d\n",MatchTrigger);
  }
}

void AliAODTrack::SetHitsPatternInTrigCh(UShort_t hitsPatternInTrigCh){
  fITSMuonClusterMap=(fITSMuonClusterMap&0xffff00ff)|(hitsPatternInTrigCh<<8);
}

Int_t AliAODTrack::HitsMT(Int_t istation, Int_t iplane, Char_t *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;
    }
  }
}

Int_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber){
  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;
  }
}
Commit	Line	Data
df9db588	1	/**************************************************************************
	2	* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	//-------------------------------------------------------------------------
	19	// AOD track base class
	20	// Author: Markus Oldenburg, CERN
	21	//-------------------------------------------------------------------------
	22
	23	#include "AliAODTrack.h"
	24
	25	ClassImp(AliAODTrack)
	26
	27	//______________________________________________________________________________
	28	AliAODTrack::AliAODTrack() :
	29	AliVirtualParticle(),
1912763f	30	fChi2perNDF(-999.),
df9db588	31	fID(-999),
	32	fLabel(-999),
	33	fCovMatrix(NULL),
	34	fProdVertex(0x0),
14b34be5	35	fCharge(-99),
1912763f	36	fITSMuonClusterMap(0),
e1c744ca	37	fType(kUndef),
e1c744ca	38	fChi2MatchTrigger(0.)
df9db588	39	{
	40	// default constructor
	41
	42	SetP();
	43	SetPosition((Float_t*)NULL);
	44	SetPID((Float_t*)NULL);
	45	}
	46
	47	//______________________________________________________________________________
	48	AliAODTrack::AliAODTrack(Int_t id,
	49	Int_t label,
	50	Double_t p[3],
	51	Bool_t cartesian,
	52	Double_t x[3],
	53	Bool_t isDCA,
	54	Double_t covMatrix[21],
	55	Short_t charge,
	56	UChar_t itsClusMap,
	57	Double_t pid[10],
	58	AliAODVertex *prodVertex,
1912763f	59	Bool_t usedForVtxFit,
dc825b15	60	Bool_t usedForPrimVtxFit,
df9db588	61	AODTrk_t ttype) :
df9db588	62	AliVirtualParticle(),
1912763f	63	fChi2perNDF(-999.),
df9db588	64	fID(id),
	65	fLabel(label),
	66	fCovMatrix(NULL),
	67	fProdVertex(prodVertex),
	68	fCharge(charge),
1912763f	69	fITSMuonClusterMap(itsClusMap),
e1c744ca	70	fType(ttype),
e1c744ca	71	fChi2MatchTrigger(0.)
df9db588	72	{
	73	// constructor
	74
	75	SetP(p, cartesian);
	76	SetPosition(x, isDCA);
1912763f	77	SetUsedForVtxFit(usedForVtxFit);
dc825b15	78	SetUsedForPrimVtxFit(usedForPrimVtxFit);
df9db588	79	if(covMatrix) SetCovMatrix(covMatrix);
	80	SetPID(pid);
	81
	82	}
	83
	84	//______________________________________________________________________________
	85	AliAODTrack::AliAODTrack(Int_t id,
	86	Int_t label,
	87	Float_t p[3],
	88	Bool_t cartesian,
	89	Float_t x[3],
	90	Bool_t isDCA,
	91	Float_t covMatrix[21],
	92	Short_t charge,
	93	UChar_t itsClusMap,
	94	Float_t pid[10],
	95	AliAODVertex *prodVertex,
1912763f	96	Bool_t usedForVtxFit,
dc825b15	97	Bool_t usedForPrimVtxFit,
df9db588	98	AODTrk_t ttype) :
df9db588	99	AliVirtualParticle(),
1912763f	100	fChi2perNDF(-999.),
df9db588	101	fID(id),
	102	fLabel(label),
	103	fCovMatrix(NULL),
	104	fProdVertex(prodVertex),
	105	fCharge(charge),
1912763f	106	fITSMuonClusterMap(itsClusMap),
e1c744ca	107	fType(ttype),
e1c744ca	108	fChi2MatchTrigger(0.)
df9db588	109	{
	110	// constructor
	111
	112	SetP(p, cartesian);
	113	SetPosition(x, isDCA);
1912763f	114	SetUsedForVtxFit(usedForVtxFit);
dc825b15	115	SetUsedForPrimVtxFit(usedForPrimVtxFit);
df9db588	116	if(covMatrix) SetCovMatrix(covMatrix);
df9db588	117	SetPID(pid);
df9db588	118	}
df9db588	119
df9db588	120	//______________________________________________________________________________
	121	AliAODTrack::~AliAODTrack()
	122	{
	123	// destructor
	124	delete fCovMatrix;
	125	}
	126
	127
	128	//______________________________________________________________________________
	129	AliAODTrack::AliAODTrack(const AliAODTrack& trk) :
	130	AliVirtualParticle(trk),
1912763f	131	fChi2perNDF(trk.fChi2perNDF),
df9db588	132	fID(trk.fID),
	133	fLabel(trk.fLabel),
	134	fCovMatrix(NULL),
	135	fProdVertex(trk.fProdVertex),
	136	fCharge(trk.fCharge),
1912763f	137	fITSMuonClusterMap(trk.fITSMuonClusterMap),
e1c744ca	138	fType(trk.fType),
e1c744ca	139	fChi2MatchTrigger(0.)
df9db588	140	{
	141	// Copy constructor
	142
	143	trk.GetP(fMomentum);
	144	trk.GetPosition(fPosition);
1912763f	145	SetUsedForVtxFit(trk.GetUsedForVtxFit());
dc825b15	146	SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit());
5d62ce04	147	if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix);
df9db588	148	SetPID(trk.fPID);
	149
	150	}
	151
	152	//______________________________________________________________________________
	153	AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk)
	154	{
	155	// Assignment operator
	156	if(this!=&trk) {
	157
	158	AliVirtualParticle::operator=(trk);
	159
	160	trk.GetP(fMomentum);
	161	trk.GetPosition(fPosition);
	162	trk.GetPID(fPID);
	163
1912763f	164	fChi2perNDF = trk.fChi2perNDF;
df9db588	165
	166	fID = trk.fID;
	167	fLabel = trk.fLabel;
	168
	169	delete fCovMatrix;
5d62ce04	170	if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix);
df9db588	171	else fCovMatrix=NULL;
	172	fProdVertex = trk.fProdVertex;
	173
	174	fCharge = trk.fCharge;
1912763f	175	fITSMuonClusterMap = trk.fITSMuonClusterMap;
1912763f	176	SetUsedForVtxFit(trk.GetUsedForVtxFit());
dc825b15	177	SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit());
df9db588	178	fType = trk.fType;
	179	}
	180
	181	return *this;
	182	}
	183
4697e4fb	184	//______________________________________________________________________________
	185	Double_t AliAODTrack::M(AODTrkPID_t pid) const
	186	{
	187	// Returns the mass.
	188	// In the case of elementary particles the hard coded mass values were taken
1912763f	189	// from the PDG. In all cases the errors on the values do not affect
4697e4fb	190	// the last digit.
	191
	192
	193	switch (pid) {
	194
	195	case kElectron :
	196	return 0.000510999;
	197	break;
	198
	199	case kMuon :
	200	return 0.1056584;
	201	break;
	202
	203	case kPion :
	204	return 0.13957;
	205	break;
	206
	207	case kKaon :
	208	return 0.4937;
	209	break;
	210
	211	case kProton :
	212	return 0.9382720;
	213	break;
	214
	215	case kDeuteron :
	216	return 1.8756;
	217	break;
	218
	219	case kTriton :
	220	return 2.8089;
	221	break;
	222
	223	case kHelium3 :
	224	return 2.8084;
	225	break;
	226
	227	case kAlpha :
	228	return 3.7274;
	229	break;
	230
	231	case kUnknown :
	232	return -999.;
	233	break;
	234
	235	default :
	236	return -999.;
	237	}
	238	}
	239
	240	//______________________________________________________________________________
	241	Double_t AliAODTrack::E(AODTrkPID_t pid) const
	242	{
	243	// Returns the energy of the particle of a given pid.
	244
	245	if (pid != kUnknown) { // particle was identified
	246	Double_t m = M(pid);
	247	return TMath::Sqrt(P()P() + mm);
	248	} else { // pid unknown
	249	return -999.;
	250	}
	251	}
	252
	253	//______________________________________________________________________________
254	Double_t AliAODTrack::Y(AODTrkPID_t pid) const
255	{
256	// Returns the energy of the particle of a given pid.
257
258	if (pid != kUnknown) { // particle was identified
259	Double_t e = E(pid);
260	Double_t pz = Pz();
261	if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz
262	return 0.5*TMath::Log((e+pz)/(e-pz));
263	} else { // energy not known or equal to pz
264	return -999.;
265	}
266	} else { // pid unknown
267	return -999.;
268	}
269	}
270
271	//______________________________________________________________________________
272	Double_t AliAODTrack::Y(Double_t m) const
273	{
274	// Returns the energy of the particle of a given mass.
275
276	if (m >= 0.) { // mass makes sense
277	Double_t e = E(m);
278	Double_t pz = Pz();
279	if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz
280	return 0.5*TMath::Log((e+pz)/(e-pz));
281	} else { // energy not known or equal to pz
282	return -999.;
283	}
284	} else { // pid unknown
285	return -999.;
286	}
287	}
288
289	//______________________________________________________________________________
290	AliAODTrack::AODTrkPID_t AliAODTrack::GetMostProbablePID() const
291	{
292	// Returns the most probable PID array element.
293
294	Int_t nPID = 10;
295	if (fPID) {
296	AODTrkPID_t loc = kUnknown;
297	Double_t max = 0.;
298	Bool_t allTheSame = kTRUE;
299
300	for (Int_t iPID = 0; iPID < nPID; iPID++) {
301	if (fPID[iPID] >= max) {
302	if (fPID[iPID] > max) {
303	allTheSame = kFALSE;
304	max = fPID[iPID];
305	loc = (AODTrkPID_t)iPID;
306	} else {
307	allTheSame = kTRUE;
308	}
309	}
310	}
311
312	return allTheSame ? kUnknown : loc;
313	} else {
314	return kUnknown;
315	}
316	}
317
318	//______________________________________________________________________________
319	void AliAODTrack::ConvertAliPIDtoAODPID()
320	{
321	// Converts AliPID array.
322	// The numbering scheme is the same for electrons, muons, pions, kaons, and protons.
323	// Everything else has to be set to zero.
324
325	fPID[kDeuteron] = 0.;
326	fPID[kTriton] = 0.;
327	fPID[kHelium3] = 0.;
328	fPID[kAlpha] = 0.;
329	fPID[kUnknown] = 0.;
330
331	return;
332	}
333
334
df9db588	335	//______________________________________________________________________________
	336	template <class T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian)
	337	{
	338	// set the momentum
	339
	340	if (p) {
	341	if (cartesian) {
16b65f2a	342	Double_t pt2 = p[0]p[0] + p[1]p[1];
16b65f2a	343	Double_t P = TMath::Sqrt(pt2 + p[2]*p[2]);
df9db588	344
16b65f2a	345	fMomentum[0] = TMath::Sqrt(pt2); // pt
	346	fMomentum[1] = (pt2 != 0.) ? TMath::ATan2(p[1], p[0]) : -999; // phi
	347	fMomentum[2] = (P != 0.) ? TMath::ACos(p[2]/P) : -999.; // theta
df9db588	348	} else {
16b65f2a	349	fMomentum[0] = p[0]; // pt
df9db588	350	fMomentum[1] = p[1]; // phi
	351	fMomentum[2] = p[2]; // theta
	352	}
	353	} else {
	354	fMomentum[0] = -999.;
	355	fMomentum[1] = -999.;
	356	fMomentum[2] = -999.;
	357	}
	358	}
	359
	360	//______________________________________________________________________________
	361	template <class T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca)
	362	{
	363	// set the position
	364
	365	if (x) {
	366	if (!dca) {
	367	ResetBit(kIsDCA);
	368
	369	fPosition[0] = x[0];
	370	fPosition[1] = x[1];
	371	fPosition[2] = x[2];
	372	} else {
	373	SetBit(kIsDCA);
	374	// don't know any better yet
	375	fPosition[0] = -999.;
	376	fPosition[1] = -999.;
	377	fPosition[2] = -999.;
	378	}
	379	} else {
	380	ResetBit(kIsDCA);
	381
	382	fPosition[0] = -999.;
	383	fPosition[1] = -999.;
	384	fPosition[2] = -999.;
	385	}
	386	}
	387
	388	//______________________________________________________________________________
	389	void AliAODTrack::SetDCA(Double_t d, Double_t z)
	390	{
	391	// set the dca
	392	fPosition[0] = d;
	393	fPosition[1] = z;
	394	fPosition[2] = 0.;
	395	SetBit(kIsDCA);
	396	}
	397
	398	//______________________________________________________________________________
	399	void AliAODTrack::Print(Option_t* /* option */) const
	400	{
	401	// prints information about AliAODTrack
	402
	403	printf("Object name: %s Track type: %s\n", GetName(), GetTitle());
	404	printf(" px = %f\n", Px());
	405	printf(" py = %f\n", Py());
	406	printf(" pz = %f\n", Pz());
	407	printf(" pt = %f\n", Pt());
	408	printf(" 1/pt = %f\n", OneOverPt());
	409	printf(" theta = %f\n", Theta());
	410	printf(" phi = %f\n", Phi());
1912763f	411	printf(" chi2/NDF = %f\n", Chi2perNDF());
df9db588	412	printf(" charge = %d\n", Charge());
	413	printf(" PID object: %p\n", PID());
	414	}
	415
e1c744ca	416	void AliAODTrack::SetMatchTrigger(Int_t MatchTrigger){
	417	switch(MatchTrigger){
	418	case 0: // 0 track does not match trigger
	419	fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff;
	420	break;
	421	case 1: // 1 track match but does not pass pt cut
	422	fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)\|0x40000000;
	423	break;
	424	case 2: // 2 track match Low pt cut
	425	fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)\|0x80000000;
	426	break;
	427	case 3: // 3 track match High pt cut
	428	fITSMuonClusterMap=fITSMuonClusterMap\|0xc0000000;
	429	break;
	430	default:
	431	fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff;
	432	printf("AliAODTrack::SetMatchTrigger unknown case for MatchTrigger: %d\n",MatchTrigger);
	433	}
	434	}
	435
	436	void AliAODTrack::SetHitsPatternInTrigCh(UShort_t hitsPatternInTrigCh){
	437	fITSMuonClusterMap=(fITSMuonClusterMap&0xffff00ff)\|(hitsPatternInTrigCh<<8);
	438	}
	439
	440	Int_t AliAODTrack::HitsMT(Int_t istation, Int_t iplane, Char_t *cathode){
	441	if(cathode){
	442	if(cathode[0]=='x'\|\|cathode[0]=='X'){
	443	if(istation==1){
	444	if(iplane==1)
	445	return (fITSMuonClusterMap&0x8000)?1:0;
	446	else if(iplane==2)
	447	return (fITSMuonClusterMap&0x4000)?1:0;
	448	else
	449	return 0;
	450	}else if(istation==2){
	451	if(iplane==1)
	452	return (fITSMuonClusterMap&0x2000)?1:0;
	453	else if(iplane==2)
	454	return (fITSMuonClusterMap&0x1000)?1:0;
	455	else
	456	return 0;
	457	}else{
	458	return 0;
	459	}
	460	}else if(cathode[0]=='y'\|\|cathode[0]=='Y'){
	461	if(istation==1){
	462	if(iplane==1)
	463	return (fITSMuonClusterMap&0x0800)?1:0;
	464	else if(iplane==2)
	465	return (fITSMuonClusterMap&0x0400)?1:0;
	466	else
	467	return 0;
	468	}else if(istation==2){
	469	if(iplane==1)
	470	return (fITSMuonClusterMap&0x0200)?1:0;
	471	else if(iplane==2)
	472	return (fITSMuonClusterMap&0x0100)?1:0;
	473	else
	474	return 0;
	475	}else{
	476	return 0;
	477	}
	478	}else{
	479	return 0;
480	}
481	}else{
482	if(istation==1){
483	if(iplane==1)
484	return (HitsMT(1,1,"X")\|\|HitsMT(1,1,"Y"))?1:0;
485	else if(iplane==2)
486	return (HitsMT(1,2,"X")\|\|HitsMT(1,2,"Y"))?1:0;
487	else
488	return 0;
489	}else if(istation==2){
490	if(iplane==1)
491	return (HitsMT(2,1,"X")\|\|HitsMT(2,1,"Y"))?1:0;
492	else if(iplane==2)
493	return (HitsMT(2,2,"X")\|\|HitsMT(2,2,"Y"))?1:0;
494	else
495	return 0;
496	}else{
497	return 0;
498	}
499	}
500	}
501
502	Int_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber){
503	switch(MuonChamber){
504	case 11:
505	return HitsMT(1,1);
506	case 12:
507	return HitsMT(1,2);
508	case 13:
509	return HitsMT(2,1);
510	case 14:
511	return HitsMT(2,2);
512	default:
513	printf("Unknown MUON chamber: %d\n",MuonChamber);
514	return 0;
515	}
516	}