[u/mrichter/AliRoot.git] / PWG1 / AliESDRecInfo.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, 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.                  *
 **************************************************************************/


///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  Time Projection Chamber                                                  //
//  Comparison macro for reconstructed tracks                                  //
//  responsible: 
//  marian.ivanov@cern.ch                                                    //
//
//

 
//ROOT includes
#include "Rtypes.h"
//
//ALIROOT includes
//
#include "AliESDtrack.h"
#include "AliTracker.h"
#include "AliTPCParam.h"
#include "AliTrackReference.h"
#include "AliTPCParamSR.h"
#include "AliESDfriend.h"
#include "AliESDtrack.h"
#include "AliTPCseed.h"
#include "AliITStrackMI.h"
#include "AliTRDtrack.h"
#include "AliMCInfo.h"
#include "AliESDRecInfo.h"


ClassImp(AliESDRecInfo)


AliTPCParam * GetTPCParam(){
  AliTPCParamSR * par = new AliTPCParamSR;
  par->Update();
  return par;
}


AliESDRecInfo::AliESDRecInfo(): 
  fITSOn(0),           // ITS refitted inward
  fTRDOn(0),           // ITS refitted inward
  fDeltaP(0),          //delta of momenta
  fSign(0),           // sign
  fReconstructed(0),         //flag if track was reconstructed
  fFake(0),             // fake track
  fMultiple(0),         // number of reconstructions
  fTPCOn(0),           // TPC refitted inward
  fBestTOFmatch(0),        //best matching between times
  fESDtrack(0),        // esd track
  fTrackF(0),      // friend track
  fTPCtrack(0),        // tpc track
  fITStrack(0),        // its track
  fTRDtrack(0)        // trd track  
{
  //
  //  default constructor
  //
}


AliESDRecInfo::AliESDRecInfo(const AliESDRecInfo& recinfo):
  TObject(),
  fITSOn(0),           // ITS refitted inward
  fTRDOn(0),           // ITS refitted inward
  fDeltaP(0),          //delta of momenta
  fSign(0),           // sign
  fReconstructed(0),         //flag if track was reconstructed
  fFake(0),             // fake track
  fMultiple(0),         // number of reconstructions
  fTPCOn(0),           // TPC refitted inward
  fBestTOFmatch(0),        //best matching between times
  fESDtrack(0),        // esd track
  fTrackF(0),      // friend track
  fTPCtrack(0),        // tpc track
  fITStrack(0),        // its track
  fTRDtrack(0)        // trd track  
{
  //
  //
  //
  memcpy(this,&recinfo, sizeof(recinfo));
  fESDtrack=0; fTrackF=0; fTPCtrack=0;fITStrack=0;fTRDtrack=0;
  SetESDtrack(recinfo.GetESDtrack());
}


AliESDRecInfo& AliESDRecInfo::operator=(const AliESDRecInfo& info) { 
  //
  // Assignment operator
  //
  this->~AliESDRecInfo();
  new (this) AliESDRecInfo(info);
  return *this;
}


AliESDRecInfo::~AliESDRecInfo()

{
  //
  //  destructor
  //
  if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
  if (fTrackF)   { delete fTrackF;   fTrackF=0;}
  if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
  if (fITStrack) { delete fITStrack; fITStrack=0;}
  if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}

}


void AliESDRecInfo::Reset()
{
  //
  // reset info
  //
  fMultiple =0; 
  fFake     =0;
  fReconstructed=0;
  if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
  if (fTrackF)   { delete fTrackF;   fTrackF=0;}
  if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
  if (fITStrack) { delete fITStrack; fITStrack=0;}
  if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
} 

void AliESDRecInfo::SetESDtrack(const AliESDtrack *track){
  //
  // 
  //
  if (fESDtrack) delete fESDtrack;
  fESDtrack = (AliESDtrack*)track->Clone();
  if (0 &&track->GetFriendTrack()){
    if (fTrackF) delete fTrackF;
    fTrackF = (AliESDfriendTrack*)track->GetFriendTrack()->Clone();
    if (fTrackF->GetCalibObject(0)){
      if (fTPCtrack) delete fTPCtrack;
      fTPCtrack = (AliTPCseed*)fTrackF->GetCalibObject(0)->Clone();
    }
  }
  
}

void  AliESDRecInfo::UpdatePoints(AliESDtrack*track)
{
  //
  //
  Int_t iclusters[200];
  Float_t density[160];
  for (Int_t i=0;i<160;i++) density[i]=-1.;
  fTPCPoints[0]= 160;
  fTPCPoints[1] = -1;
  //
  if (fTPCPoints[0]<fTPCPoints[1]) return;
  //  Int_t nclusters=track->GetTPCclusters(iclusters);

  Int_t ngood=0;
  Int_t undeff=0;
  Int_t nall =0;
  Int_t range=20;
  for (Int_t i=0;i<160;i++){
    Int_t last = i-range;
    if (nall<range) nall++;
    if (last>=0){
      if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
      if (iclusters[last]==-1) undeff--;
    }
    if (iclusters[i]>0&& (iclusters[i]&0x8000)==0)   ngood++;
    if (iclusters[i]==-1) undeff++;
    if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
  }
  Float_t maxdens=0;
  Int_t indexmax =0;
  for (Int_t i=0;i<160;i++){
    if (density[i]<0) continue;
    if (density[i]>maxdens){
      maxdens=density[i];
      indexmax=i;
    }
  }
  //
  //max dens point
  fTPCPoints[3] = maxdens;
  fTPCPoints[1] = indexmax;
  //
  // last point
  for (Int_t i=indexmax;i<160;i++){
    if (density[i]<0) continue;
    if (density[i]<maxdens/2.) {
      break;
    }
    fTPCPoints[2]=i;
  }
  //
  // first point
  for (Int_t i=indexmax;i>0;i--){
    if (density[i]<0) continue;
    if (density[i]<maxdens/2.) {
      break;
    }
    fTPCPoints[0]=i;
  }
  //
  // Density at the last 30 padrows
  //
  // 
  nall  = 0;
  ngood = 0;
  for (Int_t i=159;i>0;i--){
    if (iclusters[i]==-1) continue; //dead zone
    nall++;
    if (iclusters[i]>0)   ngood++;
    if (nall>20) break;
  }
  fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
  //
  if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;


}

//
//
void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /*par*/, Bool_t reconstructed)
{
  //
  //calculates derived variables
  //  
  UpdatePoints(fESDtrack);
  UpdateStatus(info,reconstructed);
  UpdateITS(info);
  UpdateTPC(info);
  UpdateTOF(info);
}


void  AliESDRecInfo::UpdateStatus(AliMCInfo* info, Bool_t reconstructed){
  //
  // Interpret bit mask flags
  //
  for (Int_t i=0;i<4;i++) fStatus[i] =0;
  fReconstructed = kFALSE;
  fTPCOn = kFALSE;
  fITSOn = kFALSE;
  fTRDOn = kFALSE;  
  if (reconstructed==kFALSE) return;

  fLabels[0] = info->fLabel;
  fLabels[1] = info->fPrimPart;
  fReconstructed = kTRUE;
  fTPCOn = ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
  fITSOn = ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
  fTRDOn = ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
  //
  //  
  if ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0){
    fStatus[1] =3;
  }
  else{
    if ((fESDtrack->GetStatus()&AliESDtrack::kTPCout)>0){
      fStatus[1] =2;
    }
    else{
      if ((fESDtrack->GetStatus()&AliESDtrack::kTPCin)>0)
	fStatus[1]=1;
    }      
  }
  //
  if ((fESDtrack->GetStatus()&AliESDtrack::kITSout)>0){
    fStatus[0] =2;
  }
  else{
    if ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0){
      fStatus[0] =1;
    }
    else{
      fStatus[0]=0;
    }      
  }
  //
  //
  if ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0){
    fStatus[2] =2;
  }
  else{
    if ((fESDtrack->GetStatus()&AliESDtrack::kTRDout)>0){
      fStatus[2] =1;
    }
  }
  if ((fESDtrack->GetStatus()&AliESDtrack::kTRDStop)>0){
    fStatus[2] =10;
  }   
}

void AliESDRecInfo::UpdateTOF(AliMCInfo* info){
  //
  // Update TOF related comparison information
  //
  fBestTOFmatch=1000;
  if (((fESDtrack->GetStatus()&AliESDtrack::kTOFout)>0)){
    //
    // best tof match
    Double_t times[5];
    fESDtrack->GetIntegratedTimes(times);    
    for (Int_t i=0;i<5;i++){
      if ( TMath::Abs(fESDtrack->GetTOFsignal()-times[i]) <TMath::Abs(fBestTOFmatch) ){
	fBestTOFmatch = fESDtrack->GetTOFsignal()-times[i];
      }
    }
    Int_t toflabel[3];
    fESDtrack->GetTOFLabel(toflabel);
    Bool_t toffake=kTRUE;
    Bool_t tofdaughter=kFALSE;
    for (Int_t i=0;i<3;i++){
      if (toflabel[i]<0) continue;      
      if (toflabel[i]== TMath::Abs(fESDtrack->GetLabel()))  toffake=kFALSE;	
      if (toflabel[i]==info->fParticle.GetDaughter(0) || (toflabel[i]==info->fParticle.GetDaughter(1))) tofdaughter=kTRUE;  // decay product of original particle
      fStatus[3]=1;
    }
    if (toffake) fStatus[3] =3;       //total fake
    if (tofdaughter) fStatus[3]=2;    //fake because of decay
  }else{
    fStatus[3]=0;
  }
}


void AliESDRecInfo::UpdateITS(AliMCInfo* info){
  //
  // Update ITS related comparison information
  //
  fITSinP0[0]=info->fParticle.Px();
  fITSinP0[1]=info->fParticle.Py();
  fITSinP0[2]=info->fParticle.Pz();
  fITSinP0[3]=info->fParticle.Pt();    
  //
  fITSinR0[0]=info->fParticle.Vx();
  fITSinR0[1]=info->fParticle.Vy();
  fITSinR0[2]=info->fParticle.Vz();
  fITSinR0[3] = TMath::Sqrt(fITSinR0[0]*fITSinR0[0]+fITSinR0[1]*fITSinR0[1]);
  fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
  //
  //
  if (fITSinP0[3]>0.0000001){
    fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
    fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
  }
  if (fITSOn){
    // ITS 
    Double_t param[5],x;
    fESDtrack->GetExternalParameters(x,param);   
    //    fESDtrack->GetConstrainedExternalParameters(x,param);   
    Double_t cov[15];
    fESDtrack->GetExternalCovariance(cov);
    //fESDtrack->GetConstrainedExternalCovariance(cov);
    if (TMath::Abs(param[4])<0.0000000001) return;
    
    fESDtrack->GetXYZ(fITSinR1);
    fESDtrack->GetPxPyPz(fITSinP1);
    fITSinP1[3] = TMath::Sqrt(fITSinP1[0]*fITSinP1[0]+fITSinP1[1]*fITSinP1[1]);
    //
    fITSinR1[3] = TMath::Sqrt(fITSinR1[0]*fITSinR1[0]+fITSinR1[1]*fITSinR1[1]);
    fITSinR1[4] = TMath::ATan2(fITSinR1[1],fITSinR1[0]);
    //
    //
    if (fITSinP1[3]>0.0000001){
      fITSAngle1[0] = TMath::ATan2(fITSinP1[1],fITSinP1[0]);
      fITSAngle1[1] = TMath::ATan(fITSinP1[2]/fITSinP1[3]);  
    }
    //
    //
    fITSDelta[0] = (fITSinR0[4]-fITSinR1[4])*fITSinR1[3];  //delta rfi
    fITSPools[0] = fITSDelta[0]/TMath::Sqrt(cov[0]);
    fITSDelta[1] = (fITSinR0[2]-fITSinR1[2]);              //delta z
    fITSPools[1] = fITSDelta[1]/TMath::Sqrt(cov[2]);
    fITSDelta[2] = (fITSAngle0[0]-fITSAngle1[0]);
    fITSPools[2] = fITSDelta[2]/TMath::Sqrt(cov[5]);
    fITSDelta[3] = (TMath::Tan(fITSAngle0[1])-TMath::Tan(fITSAngle1[1]));
    fITSPools[3] = fITSDelta[3]/TMath::Sqrt(cov[9]);
    fITSDelta[4] = (fITSinP0[3]-fITSinP1[3]);    
    Double_t sign = (param[4]>0) ? 1:-1; 
    fSign = sign;
    fITSPools[4] = sign*(1./fITSinP0[3]-1./fITSinP1[3])/TMath::Sqrt(cov[14]);
  }
}

void AliESDRecInfo::UpdateTPC(AliMCInfo* info){
  //
  //
  // Update TPC related information
  //
  AliTrackReference * ref = &(info->fTrackRef);
  fTPCinR0[0] = info->fTrackRef.X();	
  fTPCinR0[1] = info->fTrackRef.Y();	
  fTPCinR0[2] = info->fTrackRef.Z();
  fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]*fTPCinR0[0]+fTPCinR0[1]*fTPCinR0[1]);
  fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
  //
  fTPCinP0[0] = ref->Px();
  fTPCinP0[1] = ref->Py();
  fTPCinP0[2] = ref->Pz();
  fTPCinP0[3] = ref->Pt();
  fTPCinP0[4] = ref->P();
  fDeltaP     = (ref->P()-info->fParticle.P())/info->fParticle.P();
  //
  //
  if (fTPCinP0[3]>0.0000001){
    //
    fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
    fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
  }
  //
  if (fStatus[1]>0 &&info->fNTPCRef>0&&TMath::Abs(fTPCinP0[3])>0.0001){
    //TPC
    fESDtrack->GetInnerXYZ(fTPCinR1);
    fTPCinR1[3] = TMath::Sqrt(fTPCinR1[0]*fTPCinR1[0]+fTPCinR1[1]*fTPCinR1[1]);
    fTPCinR1[4] = TMath::ATan2(fTPCinR1[1],fTPCinR1[0]);	
    fESDtrack->GetInnerPxPyPz(fTPCinP1);
    fTPCinP1[3] = TMath::Sqrt(fTPCinP1[0]*fTPCinP1[0]+fTPCinP1[1]*fTPCinP1[1]);
    fTPCinP1[4] = TMath::Sqrt(fTPCinP1[3]*fTPCinP1[3]+fTPCinP1[2]*fTPCinP1[2]);
    //
    //
    if (fTPCinP1[3]>0.000000000000001){
      fTPCAngle1[0] = TMath::ATan2(fTPCinP1[1],fTPCinP1[0]);
      fTPCAngle1[1] = TMath::ATan(fTPCinP1[2]/fTPCinP1[3]);  
    }    
    Double_t cov[15], param[5],x, alpha;
    fESDtrack->GetInnerExternalCovariance(cov);
    fESDtrack->GetInnerExternalParameters(alpha, x,param);
    if (x<50) return ;
    //
    fTPCDelta[0] = (fTPCinR0[4]-fTPCinR1[4])*fTPCinR1[3];  //delta rfi
    fTPCPools[0] = fTPCDelta[0]/TMath::Sqrt(cov[0]);
    fTPCDelta[1] = (fTPCinR0[2]-fTPCinR1[2]);              //delta z
    fTPCPools[1] = fTPCDelta[1]/TMath::Sqrt(cov[2]);
    fTPCDelta[2] = (fTPCAngle0[0]-fTPCAngle1[0]);
    fTPCPools[2] = fTPCDelta[2]/TMath::Sqrt(cov[5]);
    fTPCDelta[3] = (TMath::Tan(fTPCAngle0[1])-TMath::Tan(fTPCAngle1[1]));
    fTPCPools[3] = fTPCDelta[3]/TMath::Sqrt(cov[9]);
    fTPCDelta[4] = (fTPCinP0[3]-fTPCinP1[3]);
    Double_t sign = (param[4]>0)? 1.:-1; 
    fSign =sign;
    fTPCPools[4] = sign*(1./fTPCinP0[3]-1./fTPCinP1[3])/TMath::Sqrt(TMath::Abs(cov[14]));
  }
}
Commit	Line	Data
6fc428f0	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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
	17	///////////////////////////////////////////////////////////////////////////////
	18	// //
	19	// Time Projection Chamber //
5b662585	20	// Comparison macro for reconstructed tracks //
6fc428f0	21	// responsible:
	22	// marian.ivanov@cern.ch //
	23	//
	24	//
	25
	26
	27
	28
	29
6fc428f0	30	//ROOT includes
	31	#include "Rtypes.h"
	32	//
	33	//ALIROOT includes
	34	//
	35	#include "AliESDtrack.h"
5b662585	36	#include "AliTracker.h"
6fc428f0	37	#include "AliTPCParam.h"
	38	#include "AliTrackReference.h"
	39	#include "AliTPCParamSR.h"
6fc428f0	40	#include "AliESDfriend.h"
	41	#include "AliESDtrack.h"
	42	#include "AliTPCseed.h"
	43	#include "AliITStrackMI.h"
	44	#include "AliTRDtrack.h"
76472f75	45	#include "AliMCInfo.h"
6fc428f0	46	#include "AliESDRecInfo.h"
	47
	48
	49
	50	ClassImp(AliESDRecInfo)
	51
	52
	53
	54
	55	AliTPCParam * GetTPCParam(){
	56	AliTPCParamSR * par = new AliTPCParamSR;
	57	par->Update();
	58	return par;
	59	}
	60
	61
	62
	63
	64	AliESDRecInfo::AliESDRecInfo():
	65	fITSOn(0), // ITS refitted inward
	66	fTRDOn(0), // ITS refitted inward
	67	fDeltaP(0), //delta of momenta
	68	fSign(0), // sign
	69	fReconstructed(0), //flag if track was reconstructed
	70	fFake(0), // fake track
	71	fMultiple(0), // number of reconstructions
	72	fTPCOn(0), // TPC refitted inward
	73	fBestTOFmatch(0), //best matching between times
	74	fESDtrack(0), // esd track
	75	fTrackF(0), // friend track
	76	fTPCtrack(0), // tpc track
	77	fITStrack(0), // its track
a1e6aa99	78	fTRDtrack(0) // trd track
6fc428f0	79	{
	80	//
	81	// default constructor
	82	//
	83	}
	84
	85
	86	AliESDRecInfo::AliESDRecInfo(const AliESDRecInfo& recinfo):
cd875161	87	TObject(),
	88	fITSOn(0), // ITS refitted inward
	89	fTRDOn(0), // ITS refitted inward
	90	fDeltaP(0), //delta of momenta
	91	fSign(0), // sign
	92	fReconstructed(0), //flag if track was reconstructed
	93	fFake(0), // fake track
	94	fMultiple(0), // number of reconstructions
	95	fTPCOn(0), // TPC refitted inward
	96	fBestTOFmatch(0), //best matching between times
	97	fESDtrack(0), // esd track
	98	fTrackF(0), // friend track
	99	fTPCtrack(0), // tpc track
	100	fITStrack(0), // its track
a1e6aa99	101	fTRDtrack(0) // trd track
6fc428f0	102	{
	103	//
	104	//
	105	//
	106	memcpy(this,&recinfo, sizeof(recinfo));
	107	fESDtrack=0; fTrackF=0; fTPCtrack=0;fITStrack=0;fTRDtrack=0;
	108	SetESDtrack(recinfo.GetESDtrack());
	109	}
	110
	111
cd875161	112	AliESDRecInfo& AliESDRecInfo::operator=(const AliESDRecInfo& info) {
	113	//
	114	// Assignment operator
	115	//
a1e6aa99	116	this->~AliESDRecInfo();
cd875161	117	new (this) AliESDRecInfo(info);
	118	return *this;
	119	}
	120
	121
	122
6fc428f0	123	AliESDRecInfo::~AliESDRecInfo()
	124
	125	{
	126	//
	127	// destructor
	128	//
	129	if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
	130	if (fTrackF) { delete fTrackF; fTrackF=0;}
	131	if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
	132	if (fITStrack) { delete fITStrack; fITStrack=0;}
	133	if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
	134
	135	}
	136
	137
	138
	139	void AliESDRecInfo::Reset()
	140	{
	141	//
	142	// reset info
	143	//
	144	fMultiple =0;
	145	fFake =0;
	146	fReconstructed=0;
	147	if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
	148	if (fTrackF) { delete fTrackF; fTrackF=0;}
	149	if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
	150	if (fITStrack) { delete fITStrack; fITStrack=0;}
	151	if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
	152	}
	153
	154	void AliESDRecInfo::SetESDtrack(const AliESDtrack *track){
	155	//
	156	//
	157	//
	158	if (fESDtrack) delete fESDtrack;
	159	fESDtrack = (AliESDtrack*)track->Clone();
	160	if (0 &&track->GetFriendTrack()){
	161	if (fTrackF) delete fTrackF;
	162	fTrackF = (AliESDfriendTrack*)track->GetFriendTrack()->Clone();
	163	if (fTrackF->GetCalibObject(0)){
	164	if (fTPCtrack) delete fTPCtrack;
	165	fTPCtrack = (AliTPCseed*)fTrackF->GetCalibObject(0)->Clone();
	166	}
	167	}
	168
	169	}
	170
	171	void AliESDRecInfo::UpdatePoints(AliESDtrack*track)
	172	{
	173	//
	174	//
	175	Int_t iclusters[200];
	176	Float_t density[160];
	177	for (Int_t i=0;i<160;i++) density[i]=-1.;
	178	fTPCPoints[0]= 160;
	179	fTPCPoints[1] = -1;
	180	//
	181	if (fTPCPoints[0]<fTPCPoints[1]) return;
	182	// Int_t nclusters=track->GetTPCclusters(iclusters);
	183
	184	Int_t ngood=0;
	185	Int_t undeff=0;
	186	Int_t nall =0;
187	Int_t range=20;
188	for (Int_t i=0;i<160;i++){
189	Int_t last = i-range;
190	if (nall<range) nall++;
191	if (last>=0){
192	if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
193	if (iclusters[last]==-1) undeff--;
194	}
195	if (iclusters[i]>0&& (iclusters[i]&0x8000)==0) ngood++;
196	if (iclusters[i]==-1) undeff++;
197	if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
198	}
199	Float_t maxdens=0;
200	Int_t indexmax =0;
201	for (Int_t i=0;i<160;i++){
202	if (density[i]<0) continue;
203	if (density[i]>maxdens){
204	maxdens=density[i];
205	indexmax=i;
206	}
207	}
208	//
209	//max dens point
210	fTPCPoints[3] = maxdens;
211	fTPCPoints[1] = indexmax;
212	//
213	// last point
214	for (Int_t i=indexmax;i<160;i++){
215	if (density[i]<0) continue;
216	if (density[i]<maxdens/2.) {
217	break;
218	}
219	fTPCPoints[2]=i;
220	}
221	//
222	// first point
223	for (Int_t i=indexmax;i>0;i--){
224	if (density[i]<0) continue;
225	if (density[i]<maxdens/2.) {
226	break;
227	}
228	fTPCPoints[0]=i;
229	}
230	//
231	// Density at the last 30 padrows
232	//
233	//
234	nall = 0;
235	ngood = 0;
236	for (Int_t i=159;i>0;i--){
237	if (iclusters[i]==-1) continue; //dead zone
238	nall++;
239	if (iclusters[i]>0) ngood++;
240	if (nall>20) break;
241	}
242	fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
243	//
244	if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;
245
246
247	}
248
249	//
250	//
251	void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /par/, Bool_t reconstructed)
252	{
6fc428f0	253	//
	254	//calculates derived variables
	255	//
6fc428f0	256	UpdatePoints(fESDtrack);
5b662585	257	UpdateStatus(info,reconstructed);
	258	UpdateITS(info);
	259	UpdateTPC(info);
	260	UpdateTOF(info);
	261	}
	262
	263
	264	void AliESDRecInfo::UpdateStatus(AliMCInfo* info, Bool_t reconstructed){
6fc428f0	265	//
5b662585	266	// Interpret bit mask flags
6fc428f0	267	//
	268	for (Int_t i=0;i<4;i++) fStatus[i] =0;
	269	fReconstructed = kFALSE;
	270	fTPCOn = kFALSE;
	271	fITSOn = kFALSE;
	272	fTRDOn = kFALSE;
	273	if (reconstructed==kFALSE) return;
	274
	275	fLabels[0] = info->fLabel;
	276	fLabels[1] = info->fPrimPart;
	277	fReconstructed = kTRUE;
	278	fTPCOn = ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
	279	fITSOn = ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
	280	fTRDOn = ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
	281	//
	282	//
	283	if ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0){
	284	fStatus[1] =3;
	285	}
	286	else{
	287	if ((fESDtrack->GetStatus()&AliESDtrack::kTPCout)>0){
	288	fStatus[1] =2;
	289	}
	290	else{
	291	if ((fESDtrack->GetStatus()&AliESDtrack::kTPCin)>0)
	292	fStatus[1]=1;
	293	}
	294	}
	295	//
	296	if ((fESDtrack->GetStatus()&AliESDtrack::kITSout)>0){
	297	fStatus[0] =2;
	298	}
	299	else{
	300	if ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0){
	301	fStatus[0] =1;
	302	}
	303	else{
	304	fStatus[0]=0;
	305	}
	306	}
6fc428f0	307	//
	308	//
	309	if ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0){
	310	fStatus[2] =2;
	311	}
	312	else{
	313	if ((fESDtrack->GetStatus()&AliESDtrack::kTRDout)>0){
	314	fStatus[2] =1;
	315	}
	316	}
	317	if ((fESDtrack->GetStatus()&AliESDtrack::kTRDStop)>0){
	318	fStatus[2] =10;
5b662585	319	}
5b662585	320	}
6fc428f0	321
5b662585	322	void AliESDRecInfo::UpdateTOF(AliMCInfo* info){
6fc428f0	323	//
5b662585	324	// Update TOF related comparison information
	325	//
	326	fBestTOFmatch=1000;
6fc428f0	327	if (((fESDtrack->GetStatus()&AliESDtrack::kTOFout)>0)){
	328	//
	329	// best tof match
	330	Double_t times[5];
	331	fESDtrack->GetIntegratedTimes(times);
	332	for (Int_t i=0;i<5;i++){
	333	if ( TMath::Abs(fESDtrack->GetTOFsignal()-times[i]) <TMath::Abs(fBestTOFmatch) ){
	334	fBestTOFmatch = fESDtrack->GetTOFsignal()-times[i];
	335	}
	336	}
	337	Int_t toflabel[3];
	338	fESDtrack->GetTOFLabel(toflabel);
	339	Bool_t toffake=kTRUE;
	340	Bool_t tofdaughter=kFALSE;
	341	for (Int_t i=0;i<3;i++){
	342	if (toflabel[i]<0) continue;
	343	if (toflabel[i]== TMath::Abs(fESDtrack->GetLabel())) toffake=kFALSE;
	344	if (toflabel[i]==info->fParticle.GetDaughter(0) \|\| (toflabel[i]==info->fParticle.GetDaughter(1))) tofdaughter=kTRUE; // decay product of original particle
	345	fStatus[3]=1;
	346	}
	347	if (toffake) fStatus[3] =3; //total fake
	348	if (tofdaughter) fStatus[3]=2; //fake because of decay
	349	}else{
	350	fStatus[3]=0;
	351	}
5b662585	352	}
6fc428f0	353
6fc428f0	354
5b662585	355
	356	void AliESDRecInfo::UpdateITS(AliMCInfo* info){
	357	//
	358	// Update ITS related comparison information
	359	//
	360	fITSinP0[0]=info->fParticle.Px();
	361	fITSinP0[1]=info->fParticle.Py();
	362	fITSinP0[2]=info->fParticle.Pz();
	363	fITSinP0[3]=info->fParticle.Pt();
	364	//
	365	fITSinR0[0]=info->fParticle.Vx();
	366	fITSinR0[1]=info->fParticle.Vy();
	367	fITSinR0[2]=info->fParticle.Vz();
	368	fITSinR0[3] = TMath::Sqrt(fITSinR0[0]fITSinR0[0]+fITSinR0[1]fITSinR0[1]);
	369	fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
	370	//
	371	//
	372	if (fITSinP0[3]>0.0000001){
	373	fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
	374	fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
6fc428f0	375	}
	376	if (fITSOn){
	377	// ITS
	378	Double_t param[5],x;
	379	fESDtrack->GetExternalParameters(x,param);
	380	// fESDtrack->GetConstrainedExternalParameters(x,param);
	381	Double_t cov[15];
	382	fESDtrack->GetExternalCovariance(cov);
	383	//fESDtrack->GetConstrainedExternalCovariance(cov);
	384	if (TMath::Abs(param[4])<0.0000000001) return;
5b662585	385
6fc428f0	386	fESDtrack->GetXYZ(fITSinR1);
	387	fESDtrack->GetPxPyPz(fITSinP1);
	388	fITSinP1[3] = TMath::Sqrt(fITSinP1[0]fITSinP1[0]+fITSinP1[1]fITSinP1[1]);
	389	//
	390	fITSinR1[3] = TMath::Sqrt(fITSinR1[0]fITSinR1[0]+fITSinR1[1]fITSinR1[1]);
	391	fITSinR1[4] = TMath::ATan2(fITSinR1[1],fITSinR1[0]);
	392	//
	393	//
	394	if (fITSinP1[3]>0.0000001){
	395	fITSAngle1[0] = TMath::ATan2(fITSinP1[1],fITSinP1[0]);
	396	fITSAngle1[1] = TMath::ATan(fITSinP1[2]/fITSinP1[3]);
	397	}
	398	//
	399	//
	400	fITSDelta[0] = (fITSinR0[4]-fITSinR1[4])*fITSinR1[3]; //delta rfi
	401	fITSPools[0] = fITSDelta[0]/TMath::Sqrt(cov[0]);
	402	fITSDelta[1] = (fITSinR0[2]-fITSinR1[2]); //delta z
	403	fITSPools[1] = fITSDelta[1]/TMath::Sqrt(cov[2]);
	404	fITSDelta[2] = (fITSAngle0[0]-fITSAngle1[0]);
	405	fITSPools[2] = fITSDelta[2]/TMath::Sqrt(cov[5]);
	406	fITSDelta[3] = (TMath::Tan(fITSAngle0[1])-TMath::Tan(fITSAngle1[1]));
	407	fITSPools[3] = fITSDelta[3]/TMath::Sqrt(cov[9]);
	408	fITSDelta[4] = (fITSinP0[3]-fITSinP1[3]);
	409	Double_t sign = (param[4]>0) ? 1:-1;
	410	fSign = sign;
5b662585	411	fITSPools[4] = sign*(1./fITSinP0[3]-1./fITSinP1[3])/TMath::Sqrt(cov[14]);
6fc428f0	412	}
6fc428f0	413	}
6fc428f0	414
5b662585	415	void AliESDRecInfo::UpdateTPC(AliMCInfo* info){
	416	//
	417	//
	418	// Update TPC related information
	419	//
	420	AliTrackReference * ref = &(info->fTrackRef);
	421	fTPCinR0[0] = info->fTrackRef.X();
	422	fTPCinR0[1] = info->fTrackRef.Y();
	423	fTPCinR0[2] = info->fTrackRef.Z();
	424	fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]fTPCinR0[0]+fTPCinR0[1]fTPCinR0[1]);
	425	fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
	426	//
	427	fTPCinP0[0] = ref->Px();
	428	fTPCinP0[1] = ref->Py();
	429	fTPCinP0[2] = ref->Pz();
	430	fTPCinP0[3] = ref->Pt();
	431	fTPCinP0[4] = ref->P();
	432	fDeltaP = (ref->P()-info->fParticle.P())/info->fParticle.P();
	433	//
	434	//
	435	if (fTPCinP0[3]>0.0000001){
	436	//
	437	fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
	438	fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
	439	}
	440	//
	441	if (fStatus[1]>0 &&info->fNTPCRef>0&&TMath::Abs(fTPCinP0[3])>0.0001){
	442	//TPC
	443	fESDtrack->GetInnerXYZ(fTPCinR1);
	444	fTPCinR1[3] = TMath::Sqrt(fTPCinR1[0]fTPCinR1[0]+fTPCinR1[1]fTPCinR1[1]);
	445	fTPCinR1[4] = TMath::ATan2(fTPCinR1[1],fTPCinR1[0]);
	446	fESDtrack->GetInnerPxPyPz(fTPCinP1);
	447	fTPCinP1[3] = TMath::Sqrt(fTPCinP1[0]fTPCinP1[0]+fTPCinP1[1]fTPCinP1[1]);
	448	fTPCinP1[4] = TMath::Sqrt(fTPCinP1[3]fTPCinP1[3]+fTPCinP1[2]fTPCinP1[2]);
	449	//
	450	//
	451	if (fTPCinP1[3]>0.000000000000001){
	452	fTPCAngle1[0] = TMath::ATan2(fTPCinP1[1],fTPCinP1[0]);
	453	fTPCAngle1[1] = TMath::ATan(fTPCinP1[2]/fTPCinP1[3]);
	454	}
	455	Double_t cov[15], param[5],x, alpha;
	456	fESDtrack->GetInnerExternalCovariance(cov);
	457	fESDtrack->GetInnerExternalParameters(alpha, x,param);
	458	if (x<50) return ;
	459	//
	460	fTPCDelta[0] = (fTPCinR0[4]-fTPCinR1[4])*fTPCinR1[3]; //delta rfi
	461	fTPCPools[0] = fTPCDelta[0]/TMath::Sqrt(cov[0]);
	462	fTPCDelta[1] = (fTPCinR0[2]-fTPCinR1[2]); //delta z
	463	fTPCPools[1] = fTPCDelta[1]/TMath::Sqrt(cov[2]);
	464	fTPCDelta[2] = (fTPCAngle0[0]-fTPCAngle1[0]);
	465	fTPCPools[2] = fTPCDelta[2]/TMath::Sqrt(cov[5]);
	466	fTPCDelta[3] = (TMath::Tan(fTPCAngle0[1])-TMath::Tan(fTPCAngle1[1]));
	467	fTPCPools[3] = fTPCDelta[3]/TMath::Sqrt(cov[9]);
	468	fTPCDelta[4] = (fTPCinP0[3]-fTPCinP1[3]);
	469	Double_t sign = (param[4]>0)? 1.:-1;
	470	fSign =sign;
	471	fTPCPools[4] = sign*(1./fTPCinP0[3]-1./fTPCinP1[3])/TMath::Sqrt(TMath::Abs(cov[14]));
	472	}
5b662585	473	}
	474
	475
	476
	477
6fc428f0	478