[u/mrichter/AliRoot.git] / PWG2 / FEMTOSCOPY / AliFemto / Reader / AliFemtoEventReaderESD.cxx

/*
 *$Id$
 *$Log$
 *Revision 1.1.1.1  2007/04/25 15:38:41  panos
 *Importing the HBT code dir
 *
 *Revision 1.5  2007-04-03 16:00:08  mchojnacki
 *Changes to iprove memory managing
 *
 *Revision 1.4  2007/03/13 15:30:03  mchojnacki
 *adding reader for simulated data
 *
 *Revision 1.3  2007/03/08 14:58:03  mchojnacki
 *adding some alice stuff
 *
 *Revision 1.2  2007/03/07 13:36:16  mchojnacki
 *Add some comments
 *
 *Revision 1.1.1.1  2007/03/07 10:14:49  mchojnacki
 *First version on CVS
 *
 */

#include "AliFemtoEventReaderESD.h"

#include "TFile.h"
#include "TTree.h"
#include "AliESD.h"
#include "AliESDtrack.h"

//#include "TSystem.h"

#include "Infrastructure/AliFmPhysicalHelixD.h"
#include "Infrastructure/AliFmThreeVectorF.h"

#include "Base/SystemOfUnits.h"

#include "Infrastructure/AliFemtoEvent.h"

ClassImp(AliFemtoEventReaderESD)

#if !(ST_NO_NAMESPACES)
  using namespace units;
#endif

using namespace std;
//____________________________
//constructor with 0 parameters , look at default settings 
AliFemtoEventReaderESD::AliFemtoEventReaderESD():
  fInputFile(" "),
  fFileName(" "),
  fConstrained(true),
  fNumberofEvent(0),
  fCurEvent(0),
  fCurFile(0),
  fTree(0x0),
  fEvent(0x0),
  fEsdFile(0x0),
  fEventFriend(0)
{
  fClusterPerPadrow = (list<Int_t> **) malloc(sizeof(list<Int_t> *) * AliESDfriendTrack::kMaxTPCcluster);
  for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
    fClusterPerPadrow[tPad] = new list<Int_t>();
  }
  fSharedList = (list<Int_t> **) malloc(sizeof(list<Int_t> *) * AliESDfriendTrack::kMaxTPCcluster);
  for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
    fSharedList[tPad] = new list<Int_t>();
  }
}

//__________________
//Destructor
AliFemtoEventReaderESD::~AliFemtoEventReaderESD()
{
  //delete fListOfFiles;
  delete fTree;
  delete fEvent;
  delete fEsdFile;

  for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
    fClusterPerPadrow[tPad]->clear();
    delete fClusterPerPadrow[tPad];
  }
  delete [] fClusterPerPadrow;
  for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
    fSharedList[tPad]->clear();
    delete fSharedList[tPad];
  }
  delete [] fSharedList;
}

//__________________
AliFemtoString AliFemtoEventReaderESD::Report()
{
  AliFemtoString temp = "\n This is the AliFemtoEventReaderESD\n";
  return temp;
}

//__________________
//setting the name of file where names of ESD file are written 
//it takes only this files which have good trees
void AliFemtoEventReaderESD::SetInputFile(const char* inputFile)
{
  char buffer[256];
  fInputFile=string(inputFile);
  cout<<"Input File set on "<<fInputFile<<endl;
  ifstream infile(inputFile);
  if(infile.good()==true)
    { 
      //checking if all give files have good tree inside
      while (infile.eof()==false)
	{
	  infile.getline(buffer,256);
	  //ifstream test_file(buffer);
	  TFile *esdFile=TFile::Open(buffer,"READ");
	  if (esdFile!=0x0)
	    {	
	      TTree* tree = (TTree*) esdFile->Get("esdTree");
	      if (tree!=0x0)
		{
		  cout<<"putting file  "<<string(buffer)<<" into analysis"<<endl;
		  fListOfFiles.push_back(string(buffer));
		  delete tree;
		}
	      esdFile->Close();	
	    }
	  delete esdFile;
	}
    }
}

//setting the next file to read	
bool AliFemtoEventReaderESD::GetNextFile()
{ 	
  if (fCurFile>=fListOfFiles.size())
    return false;
  fFileName=fListOfFiles.at(fCurFile);	
  cout<<"FileName set on "<<fFileName<<" "<<fCurFile<<endl;

  fCurFile++;
  return true;
}
void AliFemtoEventReaderESD::SetConstrained(const bool constrained)
{
  fConstrained=constrained;
}

bool AliFemtoEventReaderESD::GetConstrained() const
{
  return fConstrained;
}

AliFemtoEvent* AliFemtoEventReaderESD::ReturnHbtEvent()
{
  AliFemtoEvent *hbtEvent = 0;
  string tFriendFileName;

  if (fCurEvent==fNumberofEvent)//open next file  
    {
      cout<<"next file"<<endl;
      if(GetNextFile())	
	{
	  delete fEventFriend;
	  fEventFriend = 0;
	  delete fEvent;//added 1.04.2007
	  fEvent=new AliESD();
	  //	  delete fTree;
	  //fTree=0;
	  delete fEsdFile;
		
	  //ESD data
	  fEsdFile=TFile::Open(fFileName.c_str(),"READ");
	  fTree = (TTree*) fEsdFile->Get("esdTree");			
	  fTree->SetBranchAddress("ESD", &fEvent);			

	  // Attach the friend tree with additional information
 	  tFriendFileName = fFileName;
 	  tFriendFileName.insert(tFriendFileName.find("s.root"),"friend");
 	  cout << "Reading friend " << tFriendFileName.c_str() << endl;;
  	  fTree->AddFriend("esdFriendTree",tFriendFileName.c_str());
  	  fTree->SetBranchAddress("ESDfriend",&fEventFriend);

// 	  chain->SetBranchStatus("*",0);
// 	  chain->SetBranchStatus("fUniqueID",1);
// 	  chain->SetBranchStatus("fTracks",1);
// 	  chain->SetBranchStatus("fTracks.*",1);
// 	  chain->SetBranchStatus("fTracks.fTPCindex[160]",1);
	  fTree->SetBranchStatus("fTracks.fCalibContainer",0);


	  fNumberofEvent=fTree->GetEntries();
	  cout<<"Number of Entries in file "<<fNumberofEvent<<endl;
	  fCurEvent=0;
	  //sim data
	}
      else //no more data to read
	{
	  cout<<"no more files "<<hbtEvent<<endl;
	  fReaderStatus=1;
	  return hbtEvent; 
	}
    }		
  cout<<"starting to read event "<<fCurEvent<<endl;
  fTree->GetEvent(fCurEvent);//getting next event
  fEvent->SetESDfriend(fEventFriend);
  vector<int> label_table;//to check labels
	
  hbtEvent = new AliFemtoEvent;
  //setting basic things
  hbtEvent->SetEventNumber(fEvent->GetEventNumber());
  hbtEvent->SetRunNumber(fEvent->GetRunNumber());
  //hbtEvent->SetNumberOfTracks(fEvent->GetNumberOfTracks());
  hbtEvent->SetMagneticField(fEvent->GetMagneticField()*kilogauss);//to check if here is ok
  hbtEvent->SetZDCN1Energy(fEvent->GetZDCN1Energy());
  hbtEvent->SetZDCP1Energy(fEvent->GetZDCP1Energy());
  hbtEvent->SetZDCN2Energy(fEvent->GetZDCN2Energy());
  hbtEvent->SetZDCP2Energy(fEvent->GetZDCP2Energy());
  hbtEvent->SetZDCEMEnergy(fEvent->GetZDCEMEnergy());
  hbtEvent->SetZDCParticipants(fEvent->GetZDCParticipants());
  hbtEvent->SetTriggerMask(fEvent->GetTriggerMask());
  hbtEvent->SetTriggerCluster(fEvent->GetTriggerCluster());
	
  //Vertex
  double fV1[3];
  fEvent->GetVertex()->GetXYZ(fV1);

  AliFmThreeVectorF vertex(fV1[0],fV1[1],fV1[2]);
  hbtEvent->SetPrimVertPos(vertex);
	
  //starting to reading tracks
  int nofTracks=0;  //number of reconstructed tracks in event
  nofTracks=fEvent->GetNumberOfTracks();
  int realnofTracks=0;//number of track which we use ina analysis

  // Clear the shared cluster list
  for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
    fClusterPerPadrow[tPad]->clear();
  }
  for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
    fSharedList[tPad]->clear();
  }


  for (int i=0;i<nofTracks;i++) {
    const AliESDtrack *esdtrack=fEvent->GetTrack(i);//getting next track

    list<Int_t>::iterator tClustIter;

    Int_t tTrackIndices[AliESDfriendTrack::kMaxTPCcluster];
    Int_t tNClusters = esdtrack->GetTPCclusters(tTrackIndices);
    for (int tNcl=0; tNcl<AliESDfriendTrack::kMaxTPCcluster; tNcl++) {
      if (tTrackIndices[tNcl] >= 0) {
	tClustIter = find(fClusterPerPadrow[tNcl]->begin(), fClusterPerPadrow[tNcl]->end(), tTrackIndices[tNcl]);
	if (tClustIter == fClusterPerPadrow[tNcl]->end()) {
	  fClusterPerPadrow[tNcl]->push_back(tTrackIndices[tNcl]);
	}
	else {
	  fSharedList[tNcl]->push_back(tTrackIndices[tNcl]);
	}
      }
    }
      
  }

  for (int i=0;i<nofTracks;i++)
    {
      bool  good_momentum=true; //flaga to chcek if we can read momentum of this track
		
      AliFemtoTrack* trackCopy = new AliFemtoTrack();	
      const AliESDtrack *esdtrack=fEvent->GetTrack(i);//getting next track
      const AliESDfriendTrack *tESDfriendTrack = esdtrack->GetFriendTrack();

      trackCopy->SetCharge((short)esdtrack->GetSign());

      //in aliroot we have AliPID 
      //0-electron 1-muon 2-pion 3-kaon 4-proton 5-photon 6-pi0 7-neutron 8-kaon0 9-eleCon   
      //we use only 5 first
      double esdpid[5];
      esdtrack->GetESDpid(esdpid);
      trackCopy->SetPidProbElectron(esdpid[0]);
      trackCopy->SetPidProbMuon(esdpid[1]);
      trackCopy->SetPidProbPion(esdpid[2]);
      trackCopy->SetPidProbKaon(esdpid[3]);
      trackCopy->SetPidProbProton(esdpid[4]);
						
      double pxyz[3];
      if (fConstrained==true)		    
	good_momentum=esdtrack->GetConstrainedPxPyPz(pxyz); //reading constrained momentum
      else
	good_momentum=esdtrack->GetPxPyPz(pxyz);//reading noconstarined momentum
      AliFemtoThreeVector v(pxyz[0],pxyz[1],pxyz[2]);
      trackCopy->SetP(v);//setting momentum
      trackCopy->SetPt(sqrt(pxyz[0]*pxyz[0]+pxyz[1]*pxyz[1]));
      const AliFmThreeVectorD p(pxyz[0],pxyz[1],pxyz[2]);
      if (p.mag() == 0) {
	delete trackCopy;
	continue;
      }
      const AliFmThreeVectorD origin(fV1[0],fV1[1],fV1[2]);
      //setting helix I do not if it is ok
      AliFmPhysicalHelixD helix(p,origin,(double)(fEvent->GetMagneticField())*kilogauss,(double)(trackCopy->Charge())); 
      trackCopy->SetHelix(helix);
	    	
      trackCopy->SetTrackId(esdtrack->GetID());
      trackCopy->SetFlags(esdtrack->GetStatus());
      //trackCopy->SetLabel(esdtrack->GetLabel());
		
      //some stuff which could be useful 
      float impact[2];
      float covimpact[3];
      esdtrack->GetImpactParameters(impact,covimpact);
      trackCopy->SetImpactD(impact[0]);
      trackCopy->SetImpactZ(impact[1]);
      trackCopy->SetCdd(covimpact[0]);
      trackCopy->SetCdz(covimpact[1]);
      trackCopy->SetCzz(covimpact[2]);
      trackCopy->SetITSchi2(esdtrack->GetITSchi2());    
      trackCopy->SetITSncls(esdtrack->GetNcls(0));     
      trackCopy->SetTPCchi2(esdtrack->GetTPCchi2());       
      trackCopy->SetTPCncls(esdtrack->GetTPCNcls());       
      trackCopy->SetTPCnclsF(esdtrack->GetTPCNclsF());      
      trackCopy->SetTPCsignalN((short)esdtrack->GetTPCsignalN()); //due to bug in aliesdtrack class   
      trackCopy->SetTPCsignalS(esdtrack->GetTPCsignalSigma()); 

      // Fill cluster per padrow information
      Int_t tTrackIndices[AliESDfriendTrack::kMaxTPCcluster];
      Int_t tNClusters = esdtrack->GetTPCclusters(tTrackIndices);
      for (int tNcl=0; tNcl<AliESDfriendTrack::kMaxTPCcluster; tNcl++) {
	if (tTrackIndices[tNcl] > 0)
	  trackCopy->SetTPCcluster(tNcl, 1);
	else
	  trackCopy->SetTPCcluster(tNcl, 0);
      }
      
      // Fill shared cluster information
      list<Int_t>::iterator tClustIter;

      for (int tNcl=0; tNcl<AliESDfriendTrack::kMaxTPCcluster; tNcl++) {
	if (tTrackIndices[tNcl] > 0) {
	  tClustIter = find(fSharedList[tNcl]->begin(), fSharedList[tNcl]->end(), tTrackIndices[tNcl]);
	  if (tClustIter != fSharedList[tNcl]->end()) {
	    trackCopy->SetTPCshared(tNcl, 1);
	    cout << "Event next" <<  endl;
	    cout << "Track: " << i << endl;
	    cout << "Shared cluster: " << tNcl << " " << tTrackIndices[tNcl] << endl;
	  }
	  else {
	    trackCopy->SetTPCshared(tNcl, 0);
	  }
	}
      }

      //decision if we want this track
      //if we using diffrent labels we want that this label was use for first time 
      //if we use hidden info we want to have match between sim data and ESD
      if (good_momentum==true)
	{
	  hbtEvent->TrackCollection()->push_back(trackCopy);//adding track to analysis
	  realnofTracks++;//real number of tracks
	}
      else
	{
	  delete  trackCopy;
	}
		
    }

  hbtEvent->SetNumberOfTracks(realnofTracks);//setting number of track which we read in event	
  fCurEvent++;	
  cout<<"end of reading nt "<<nofTracks<<" real number "<<realnofTracks<<endl;
  if (fCurEvent== fNumberofEvent)//if end of current file close all
    {   
      fTree->Reset(); 
      delete fTree;
      fEsdFile->Close();
    }
  return hbtEvent; 
}
Commit	Line	Data
67427ff7	1	/*
	2	*$Id$
	3	*$Log$
b2f60a91	4	*Revision 1.1.1.1 2007/04/25 15:38:41 panos
	5	*Importing the HBT code dir
	6	*
67427ff7	7	*Revision 1.5 2007-04-03 16:00:08 mchojnacki
	8	*Changes to iprove memory managing
	9	*
	10	*Revision 1.4 2007/03/13 15:30:03 mchojnacki
	11	*adding reader for simulated data
	12	*
	13	*Revision 1.3 2007/03/08 14:58:03 mchojnacki
	14	*adding some alice stuff
	15	*
	16	*Revision 1.2 2007/03/07 13:36:16 mchojnacki
	17	*Add some comments
	18	*
	19	*Revision 1.1.1.1 2007/03/07 10:14:49 mchojnacki
	20	*First version on CVS
	21	*
	22	*/
	23
	24	#include "AliFemtoEventReaderESD.h"
	25
	26	#include "TFile.h"
	27	#include "TTree.h"
	28	#include "AliESD.h"
	29	#include "AliESDtrack.h"
	30
	31	//#include "TSystem.h"
	32
b2f60a91	33	#include "Infrastructure/AliFmPhysicalHelixD.h"
b2f60a91	34	#include "Infrastructure/AliFmThreeVectorF.h"
67427ff7	35
b2f60a91	36	#include "Base/SystemOfUnits.h"
67427ff7	37
b2f60a91	38	#include "Infrastructure/AliFemtoEvent.h"
67427ff7	39
	40	ClassImp(AliFemtoEventReaderESD)
	41
	42	#if !(ST_NO_NAMESPACES)
	43	using namespace units;
	44	#endif
	45
	46	using namespace std;
	47	//____________________________
	48	//constructor with 0 parameters , look at default settings
	49	AliFemtoEventReaderESD::AliFemtoEventReaderESD():
	50	fInputFile(" "),
	51	fFileName(" "),
	52	fConstrained(true),
	53	fNumberofEvent(0),
	54	fCurEvent(0),
	55	fCurFile(0),
	56	fTree(0x0),
	57	fEvent(0x0),
	58	fEsdFile(0x0),
	59	fEventFriend(0)
	60	{
	61	fClusterPerPadrow = (list<Int_t> *) malloc(sizeof(list<Int_t> ) * AliESDfriendTrack::kMaxTPCcluster);
	62	for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
	63	fClusterPerPadrow[tPad] = new list<Int_t>();
	64	}
	65	fSharedList = (list<Int_t> *) malloc(sizeof(list<Int_t> ) * AliESDfriendTrack::kMaxTPCcluster);
	66	for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
	67	fSharedList[tPad] = new list<Int_t>();
	68	}
	69	}
	70
	71	//__________________
	72	//Destructor
	73	AliFemtoEventReaderESD::~AliFemtoEventReaderESD()
	74	{
	75	//delete fListOfFiles;
	76	delete fTree;
	77	delete fEvent;
	78	delete fEsdFile;
	79
	80	for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
	81	fClusterPerPadrow[tPad]->clear();
	82	delete fClusterPerPadrow[tPad];
	83	}
	84	delete [] fClusterPerPadrow;
	85	for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
	86	fSharedList[tPad]->clear();
	87	delete fSharedList[tPad];
	88	}
	89	delete [] fSharedList;
	90	}
	91
	92	//__________________
	93	AliFemtoString AliFemtoEventReaderESD::Report()
	94	{
	95	AliFemtoString temp = "\n This is the AliFemtoEventReaderESD\n";
	96	return temp;
	97	}
	98
	99	//__________________
	100	//setting the name of file where names of ESD file are written
	101	//it takes only this files which have good trees
	102	void AliFemtoEventReaderESD::SetInputFile(const char* inputFile)
103	{
104	char buffer[256];
105	fInputFile=string(inputFile);
106	cout<<"Input File set on "<<fInputFile<<endl;
107	ifstream infile(inputFile);
108	if(infile.good()==true)
109	{
110	//checking if all give files have good tree inside
111	while (infile.eof()==false)
112	{
113	infile.getline(buffer,256);
114	//ifstream test_file(buffer);
115	TFile *esdFile=TFile::Open(buffer,"READ");
116	if (esdFile!=0x0)
117	{
118	TTree* tree = (TTree*) esdFile->Get("esdTree");
119	if (tree!=0x0)
120	{
121	cout<<"putting file "<<string(buffer)<<" into analysis"<<endl;
122	fListOfFiles.push_back(string(buffer));
123	delete tree;
124	}
125	esdFile->Close();
126	}
127	delete esdFile;
128	}
129	}
130	}
131
132	//setting the next file to read
133	bool AliFemtoEventReaderESD::GetNextFile()
134	{
135	if (fCurFile>=fListOfFiles.size())
136	return false;
137	fFileName=fListOfFiles.at(fCurFile);
138	cout<<"FileName set on "<<fFileName<<" "<<fCurFile<<endl;
139
140	fCurFile++;
141	return true;
142	}
143	void AliFemtoEventReaderESD::SetConstrained(const bool constrained)
144	{
145	fConstrained=constrained;
146	}
147
148	bool AliFemtoEventReaderESD::GetConstrained() const
149	{
150	return fConstrained;
151	}
152
153	AliFemtoEvent* AliFemtoEventReaderESD::ReturnHbtEvent()
154	{
155	AliFemtoEvent *hbtEvent = 0;
156	string tFriendFileName;
157
158	if (fCurEvent==fNumberofEvent)//open next file
159	{
160	cout<<"next file"<<endl;
161	if(GetNextFile())
162	{
163	delete fEventFriend;
164	fEventFriend = 0;
165	delete fEvent;//added 1.04.2007
166	fEvent=new AliESD();
1e1d2996	167	// delete fTree;
67427ff7	168	//fTree=0;
	169	delete fEsdFile;
	170
	171	//ESD data
	172	fEsdFile=TFile::Open(fFileName.c_str(),"READ");
	173	fTree = (TTree*) fEsdFile->Get("esdTree");
	174	fTree->SetBranchAddress("ESD", &fEvent);
	175
	176	// Attach the friend tree with additional information
	177	tFriendFileName = fFileName;
	178	tFriendFileName.insert(tFriendFileName.find("s.root"),"friend");
	179	cout << "Reading friend " << tFriendFileName.c_str() << endl;;
	180	fTree->AddFriend("esdFriendTree",tFriendFileName.c_str());
	181	fTree->SetBranchAddress("ESDfriend",&fEventFriend);
	182
1e1d2996	183	// chain->SetBranchStatus("*",0);
	184	// chain->SetBranchStatus("fUniqueID",1);
	185	// chain->SetBranchStatus("fTracks",1);
	186	// chain->SetBranchStatus("fTracks.*",1);
	187	// chain->SetBranchStatus("fTracks.fTPCindex[160]",1);
	188	fTree->SetBranchStatus("fTracks.fCalibContainer",0);
	189
	190
67427ff7	191	fNumberofEvent=fTree->GetEntries();
	192	cout<<"Number of Entries in file "<<fNumberofEvent<<endl;
	193	fCurEvent=0;
	194	//sim data
	195	}
	196	else //no more data to read
	197	{
	198	cout<<"no more files "<<hbtEvent<<endl;
	199	fReaderStatus=1;
	200	return hbtEvent;
	201	}
	202	}
	203	cout<<"starting to read event "<<fCurEvent<<endl;
	204	fTree->GetEvent(fCurEvent);//getting next event
	205	fEvent->SetESDfriend(fEventFriend);
	206	vector<int> label_table;//to check labels
	207
	208	hbtEvent = new AliFemtoEvent;
	209	//setting basic things
1e1d2996	210	hbtEvent->SetEventNumber(fEvent->GetEventNumber());
67427ff7	211	hbtEvent->SetRunNumber(fEvent->GetRunNumber());
	212	//hbtEvent->SetNumberOfTracks(fEvent->GetNumberOfTracks());
	213	hbtEvent->SetMagneticField(fEvent->GetMagneticField()*kilogauss);//to check if here is ok
	214	hbtEvent->SetZDCN1Energy(fEvent->GetZDCN1Energy());
	215	hbtEvent->SetZDCP1Energy(fEvent->GetZDCP1Energy());
	216	hbtEvent->SetZDCN2Energy(fEvent->GetZDCN2Energy());
	217	hbtEvent->SetZDCP2Energy(fEvent->GetZDCP2Energy());
	218	hbtEvent->SetZDCEMEnergy(fEvent->GetZDCEMEnergy());
	219	hbtEvent->SetZDCParticipants(fEvent->GetZDCParticipants());
	220	hbtEvent->SetTriggerMask(fEvent->GetTriggerMask());
	221	hbtEvent->SetTriggerCluster(fEvent->GetTriggerCluster());
	222
	223	//Vertex
	224	double fV1[3];
	225	fEvent->GetVertex()->GetXYZ(fV1);
	226
	227	AliFmThreeVectorF vertex(fV1[0],fV1[1],fV1[2]);
	228	hbtEvent->SetPrimVertPos(vertex);
	229
	230	//starting to reading tracks
	231	int nofTracks=0; //number of reconstructed tracks in event
	232	nofTracks=fEvent->GetNumberOfTracks();
	233	int realnofTracks=0;//number of track which we use ina analysis
	234
	235	// Clear the shared cluster list
	236	for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
	237	fClusterPerPadrow[tPad]->clear();
	238	}
	239	for (int tPad=0; tPad<AliESDfriendTrack::kMaxTPCcluster; tPad++) {
	240	fSharedList[tPad]->clear();
	241	}
	242
	243
	244	for (int i=0;i<nofTracks;i++) {
	245	const AliESDtrack *esdtrack=fEvent->GetTrack(i);//getting next track
	246
	247	list<Int_t>::iterator tClustIter;
	248
	249	Int_t tTrackIndices[AliESDfriendTrack::kMaxTPCcluster];
	250	Int_t tNClusters = esdtrack->GetTPCclusters(tTrackIndices);
	251	for (int tNcl=0; tNcl<AliESDfriendTrack::kMaxTPCcluster; tNcl++) {
	252	if (tTrackIndices[tNcl] >= 0) {
	253	tClustIter = find(fClusterPerPadrow[tNcl]->begin(), fClusterPerPadrow[tNcl]->end(), tTrackIndices[tNcl]);
	254	if (tClustIter == fClusterPerPadrow[tNcl]->end()) {
	255	fClusterPerPadrow[tNcl]->push_back(tTrackIndices[tNcl]);
	256	}
	257	else {
	258	fSharedList[tNcl]->push_back(tTrackIndices[tNcl]);
	259	}
	260	}
	261	}
	262
	263	}
	264
	265	for (int i=0;i<nofTracks;i++)
	266	{
	267	bool good_momentum=true; //flaga to chcek if we can read momentum of this track
	268
	269	AliFemtoTrack* trackCopy = new AliFemtoTrack();
	270	const AliESDtrack *esdtrack=fEvent->GetTrack(i);//getting next track
	271	const AliESDfriendTrack *tESDfriendTrack = esdtrack->GetFriendTrack();
	272
	273	trackCopy->SetCharge((short)esdtrack->GetSign());
	274
275	//in aliroot we have AliPID
276	//0-electron 1-muon 2-pion 3-kaon 4-proton 5-photon 6-pi0 7-neutron 8-kaon0 9-eleCon
277	//we use only 5 first
278	double esdpid[5];
279	esdtrack->GetESDpid(esdpid);
280	trackCopy->SetPidProbElectron(esdpid[0]);
281	trackCopy->SetPidProbMuon(esdpid[1]);
282	trackCopy->SetPidProbPion(esdpid[2]);
283	trackCopy->SetPidProbKaon(esdpid[3]);
284	trackCopy->SetPidProbProton(esdpid[4]);
285
286	double pxyz[3];
287	if (fConstrained==true)
288	good_momentum=esdtrack->GetConstrainedPxPyPz(pxyz); //reading constrained momentum
289	else
290	good_momentum=esdtrack->GetPxPyPz(pxyz);//reading noconstarined momentum
291	AliFemtoThreeVector v(pxyz[0],pxyz[1],pxyz[2]);
292	trackCopy->SetP(v);//setting momentum
293	trackCopy->SetPt(sqrt(pxyz[0]pxyz[0]+pxyz[1]pxyz[1]));
294	const AliFmThreeVectorD p(pxyz[0],pxyz[1],pxyz[2]);
295	if (p.mag() == 0) {
296	delete trackCopy;
297	continue;
298	}
299	const AliFmThreeVectorD origin(fV1[0],fV1[1],fV1[2]);
300	//setting helix I do not if it is ok
301	AliFmPhysicalHelixD helix(p,origin,(double)(fEvent->GetMagneticField())*kilogauss,(double)(trackCopy->Charge()));
302	trackCopy->SetHelix(helix);
303
304	trackCopy->SetTrackId(esdtrack->GetID());
305	trackCopy->SetFlags(esdtrack->GetStatus());
306	//trackCopy->SetLabel(esdtrack->GetLabel());
307
308	//some stuff which could be useful
309	float impact[2];
310	float covimpact[3];
311	esdtrack->GetImpactParameters(impact,covimpact);
312	trackCopy->SetImpactD(impact[0]);
313	trackCopy->SetImpactZ(impact[1]);
314	trackCopy->SetCdd(covimpact[0]);
315	trackCopy->SetCdz(covimpact[1]);
316	trackCopy->SetCzz(covimpact[2]);
317	trackCopy->SetITSchi2(esdtrack->GetITSchi2());
318	trackCopy->SetITSncls(esdtrack->GetNcls(0));
319	trackCopy->SetTPCchi2(esdtrack->GetTPCchi2());
320	trackCopy->SetTPCncls(esdtrack->GetTPCNcls());
321	trackCopy->SetTPCnclsF(esdtrack->GetTPCNclsF());
322	trackCopy->SetTPCsignalN((short)esdtrack->GetTPCsignalN()); //due to bug in aliesdtrack class
323	trackCopy->SetTPCsignalS(esdtrack->GetTPCsignalSigma());
324
325	// Fill cluster per padrow information
326	Int_t tTrackIndices[AliESDfriendTrack::kMaxTPCcluster];
327	Int_t tNClusters = esdtrack->GetTPCclusters(tTrackIndices);
328	for (int tNcl=0; tNcl<AliESDfriendTrack::kMaxTPCcluster; tNcl++) {
329	if (tTrackIndices[tNcl] > 0)
330	trackCopy->SetTPCcluster(tNcl, 1);
331	else
332	trackCopy->SetTPCcluster(tNcl, 0);
333	}
334
335	// Fill shared cluster information
336	list<Int_t>::iterator tClustIter;
337
338	for (int tNcl=0; tNcl<AliESDfriendTrack::kMaxTPCcluster; tNcl++) {
339	if (tTrackIndices[tNcl] > 0) {
340	tClustIter = find(fSharedList[tNcl]->begin(), fSharedList[tNcl]->end(), tTrackIndices[tNcl]);
341	if (tClustIter != fSharedList[tNcl]->end()) {
342	trackCopy->SetTPCshared(tNcl, 1);
343	cout << "Event next" << endl;
344	cout << "Track: " << i << endl;
345	cout << "Shared cluster: " << tNcl << " " << tTrackIndices[tNcl] << endl;
346	}
347	else {
348	trackCopy->SetTPCshared(tNcl, 0);
349	}
350	}
351	}
352
353	//decision if we want this track
354	//if we using diffrent labels we want that this label was use for first time
355	//if we use hidden info we want to have match between sim data and ESD
356	if (good_momentum==true)
357	{
358	hbtEvent->TrackCollection()->push_back(trackCopy);//adding track to analysis
359	realnofTracks++;//real number of tracks
360	}
361	else
362	{
363	delete trackCopy;
364	}
365
366	}
367
368	hbtEvent->SetNumberOfTracks(realnofTracks);//setting number of track which we read in event
369	fCurEvent++;
370	cout<<"end of reading nt "<<nofTracks<<" real number "<<realnofTracks<<endl;
371	if (fCurEvent== fNumberofEvent)//if end of current file close all
372	{
373	fTree->Reset();
374	delete fTree;
375	fEsdFile->Close();
376	}
377	return hbtEvent;
378	}
379
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