[u/mrichter/AliRoot.git] / JETAN / AliJetParticlesReaderHLT.cxx

// $Id$

//___________________________________________________________________________
/////////////////////////////////////////////////////////////////////////////
//                                                                         //
// File reader for HLT tracks ESD                                          //
//                                                                         //
// loizides@ikf.uni-frankfurt.de                                           //
/////////////////////////////////////////////////////////////////////////////

#include <Riostream.h>
#include <TMath.h>
#include <TString.h>
#include <TObjString.h>
#include <TTree.h>
#include <TFile.h>
#include <AliESD.h>
#include <AliESDtrack.h>
#include <AliESDHLTtrack.h>
#include <AliL3Track.h>
#include <AliKalmanTrack.h>
#include <AliJetEventParticles.h>
#include "AliJetParticlesReaderHLT.h"

ClassImp(AliJetParticlesReaderHLT)

AliJetParticlesReaderHLT::AliJetParticlesReaderHLT(Bool_t bMapper, const Char_t* esdfilename) :
  AliJetParticlesReaderESD(0,esdfilename),
  fTrackerType(bMapper),
  fMinHits(0),
  fMinWeight(0)
{
  //constructor
}

/********************************************************************/
  
AliJetParticlesReaderHLT::AliJetParticlesReaderHLT(
				      Bool_t bMapper,
                                      TObjArray* dirs,
                                      const Char_t* esdfilename) :
  AliJetParticlesReaderESD(0,dirs,esdfilename),
  fTrackerType(bMapper),
  fMinHits(0),
  fMinWeight(0)

{
  //constructor
}

/********************************************************************/

AliJetParticlesReaderHLT::~AliJetParticlesReaderHLT()
{
  //desctructor
}

Int_t AliJetParticlesReaderHLT::ReadESD(AliESD* esd)
{
  //Reads one ESD

  if (esd == 0)
   {
     Error("ReadESD","ESD is NULL");
     return kFALSE;
   }

  Float_t mf = esd->GetMagneticField(); 
  if (mf <= 0.0)  
  {
     Error("ReadESD","Magnetic Field is 0. Skipping to next event.");
     return kFALSE;
  }
  AliKalmanTrack::SetMagneticField(mf/10.);

  Info("ReadESD","Reading Event %d",fCurrentDir*1000+fCurrentEvent);
  if((!fOwner) || (fEventParticles==0)) 
    fEventParticles = new AliJetEventParticles();

  Int_t ntr=0;
  if(fTrackerType){
    ntr =esd->GetNumberOfHLTHoughTracks();
    Info("ReadESD","Found %d conformal tracks.",ntr);
  } else {
    ntr=esd->GetNumberOfHLTHoughTracks();
    Info("ReadESD","Found %d hough tracks.",ntr);
  }
  fEventParticles->Reset(ntr);

  TString headdesc="";
  headdesc+="Run ";
  headdesc+=esd->GetRunNumber();
  headdesc+=": Ev ";
  headdesc+=esd->GetEventNumber();
  fEventParticles->SetHeader(headdesc);

  Double_t vertexpos[3];//vertex position
  const AliESDVertex* kvertex = esd->GetVertex();
  if (kvertex == 0)
   {
     Info("ReadESD","ESD returned NULL pointer to vertex - assuming (0.0,0.0,0.0)");
     vertexpos[0] = 0.0;
     vertexpos[1] = 0.0;
     vertexpos[2] = 0.0;
   }
  else
   {
     kvertex->GetXYZ(vertexpos);
   }

  fEventParticles->SetVertex(vertexpos[0],vertexpos[1],vertexpos[2]);

  AliL3Track l3;
  for (Int_t i = 0;i<ntr; i++) {
    AliESDHLTtrack *kesdtrack;
    if(fTrackerType){
      kesdtrack=esd->GetHLTConfMapTrack(i);
    } else {
      kesdtrack=esd->GetHLTHoughTrack(i);
    }

    if (kesdtrack == 0)
      {
        Error("ReadESD","Can not get track %d", i);
        continue;
      }

    if(fTrackerType){
      //if(!kesdtrack->ComesFromMainVertex()) continue;
      l3.SetFirstPoint(kesdtrack->GetFirstPointX(),kesdtrack->GetFirstPointY(),kesdtrack->GetFirstPointZ());
      l3.SetLastPoint(kesdtrack->GetLastPointX(),kesdtrack->GetLastPointY(),kesdtrack->GetLastPointZ());
      l3.SetCharge(kesdtrack->GetCharge());
      l3.SetPt(kesdtrack->GetPt());
      l3.SetTgl(kesdtrack->GetTgl());
      l3.SetPsi(kesdtrack->GetPsi());
      l3.CalculateHelix();
      l3.SetFirstPoint(0,0,0);
      l3.UpdateToFirstPoint();
    }

    //const Float_t kpid=kesdtrack->GetPID();
    const Int_t knhits=kesdtrack->GetNHits();
    const Int_t kweight=kesdtrack->GetWeight();
    //cout << i << " " << kweight << " " << knhits << endl;
    if((fMinHits>0) && (knhits<fMinHits)) continue;    
    if(kweight>1000) continue; //avoid ghosts 
    if((fMinWeight>0) && (kweight<fMinWeight)) continue;

    const Float_t kpx=kesdtrack->GetPx();
    const Float_t kpy=kesdtrack->GetPy();
    const Float_t kpz=kesdtrack->GetPz();
    const Float_t kpt=kesdtrack->GetPt();
    const Float_t kp=TMath::Sqrt(kpz*kpz+kpt*kpt);
    const Float_t keta=0.5*TMath::Log((kp+kpz+1e-30)/(kp-kpz+1e-30)); 
    const Float_t kphi=TMath::Pi()+TMath::ATan2(-kpy,-kpx);

    if(IsAcceptedParticle(kpt,kphi,keta))
      fEventParticles->AddParticle(kpx,kpy,kpz,kp,i,kesdtrack->GetMCid(),knhits,kpt,kphi,keta);
  } //loop over tracks

  return kTRUE;
}
Commit	Line	Data
5d60c8f9	1	// $Id$
	2
	3	//___________________________________________________________________________
	4	/////////////////////////////////////////////////////////////////////////////
	5	// //
	6	// File reader for HLT tracks ESD //
	7	// //
	8	// loizides@ikf.uni-frankfurt.de //
	9	/////////////////////////////////////////////////////////////////////////////
	10
	11	#include <Riostream.h>
	12	#include <TMath.h>
	13	#include <TString.h>
	14	#include <TObjString.h>
	15	#include <TTree.h>
	16	#include <TFile.h>
	17	#include <AliESD.h>
	18	#include <AliESDtrack.h>
	19	#include <AliESDHLTtrack.h>
75a0c43e	20	#include <AliL3Track.h>
04a02430	21	#include <AliKalmanTrack.h>
5d60c8f9	22	#include <AliJetEventParticles.h>
	23	#include "AliJetParticlesReaderHLT.h"
	24
	25	ClassImp(AliJetParticlesReaderHLT)
	26
	27	AliJetParticlesReaderHLT::AliJetParticlesReaderHLT(Bool_t bMapper, const Char_t* esdfilename) :
d9a296b1	28	AliJetParticlesReaderESD(0,esdfilename),
04a02430	29	fTrackerType(bMapper),
	30	fMinHits(0),
	31	fMinWeight(0)
5d60c8f9	32	{
	33	//constructor
	34	}
	35
	36	/********************************************************************/
	37
	38	AliJetParticlesReaderHLT::AliJetParticlesReaderHLT(
	39	Bool_t bMapper,
	40	TObjArray* dirs,
	41	const Char_t* esdfilename) :
d9a296b1	42	AliJetParticlesReaderESD(0,dirs,esdfilename),
04a02430	43	fTrackerType(bMapper),
	44	fMinHits(0),
	45	fMinWeight(0)
	46
5d60c8f9	47	{
	48	//constructor
	49	}
	50
	51	/********************************************************************/
	52
	53	AliJetParticlesReaderHLT::~AliJetParticlesReaderHLT()
	54	{
	55	//desctructor
	56	}
	57
	58	Int_t AliJetParticlesReaderHLT::ReadESD(AliESD* esd)
	59	{
	60	//Reads one ESD
	61
	62	if (esd == 0)
	63	{
	64	Error("ReadESD","ESD is NULL");
	65	return kFALSE;
	66	}
	67
04a02430	68	Float_t mf = esd->GetMagneticField();
	69	if (mf <= 0.0)
	70	{
	71	Error("ReadESD","Magnetic Field is 0. Skipping to next event.");
	72	return kFALSE;
	73	}
	74	AliKalmanTrack::SetMagneticField(mf/10.);
	75
a86edc4e	76	Info("ReadESD","Reading Event %d",fCurrentDir*1000+fCurrentEvent);
5d60c8f9	77	if((!fOwner) \|\| (fEventParticles==0))
	78	fEventParticles = new AliJetEventParticles();
	79
04a02430	80	Int_t ntr=0;
	81	if(fTrackerType){
	82	ntr =esd->GetNumberOfHLTHoughTracks();
	83	Info("ReadESD","Found %d conformal tracks.",ntr);
	84	} else {
	85	ntr=esd->GetNumberOfHLTHoughTracks();
	86	Info("ReadESD","Found %d hough tracks.",ntr);
	87	}
	88	fEventParticles->Reset(ntr);
	89
	90	TString headdesc="";
	91	headdesc+="Run ";
	92	headdesc+=esd->GetRunNumber();
	93	headdesc+=": Ev ";
	94	headdesc+=esd->GetEventNumber();
	95	fEventParticles->SetHeader(headdesc);
	96
5d60c8f9	97	Double_t vertexpos[3];//vertex position
	98	const AliESDVertex* kvertex = esd->GetVertex();
	99	if (kvertex == 0)
	100	{
	101	Info("ReadESD","ESD returned NULL pointer to vertex - assuming (0.0,0.0,0.0)");
	102	vertexpos[0] = 0.0;
	103	vertexpos[1] = 0.0;
	104	vertexpos[2] = 0.0;
	105	}
	106	else
	107	{
	108	kvertex->GetXYZ(vertexpos);
	109	}
	110
	111	fEventParticles->SetVertex(vertexpos[0],vertexpos[1],vertexpos[2]);
	112
75a0c43e	113	AliL3Track l3;
04a02430	114	for (Int_t i = 0;i<ntr; i++) {
	115	AliESDHLTtrack *kesdtrack;
	116	if(fTrackerType){
	117	kesdtrack=esd->GetHLTConfMapTrack(i);
	118	} else {
	119	kesdtrack=esd->GetHLTHoughTrack(i);
	120	}
5d60c8f9	121
04a02430	122	if (kesdtrack == 0)
5d60c8f9	123	{
	124	Error("ReadESD","Can not get track %d", i);
	125	continue;
	126	}
	127
75a0c43e	128	if(fTrackerType){
	129	//if(!kesdtrack->ComesFromMainVertex()) continue;
	130	l3.SetFirstPoint(kesdtrack->GetFirstPointX(),kesdtrack->GetFirstPointY(),kesdtrack->GetFirstPointZ());
	131	l3.SetLastPoint(kesdtrack->GetLastPointX(),kesdtrack->GetLastPointY(),kesdtrack->GetLastPointZ());
	132	l3.SetCharge(kesdtrack->GetCharge());
	133	l3.SetPt(kesdtrack->GetPt());
	134	l3.SetTgl(kesdtrack->GetTgl());
	135	l3.SetPsi(kesdtrack->GetPsi());
	136	l3.CalculateHelix();
	137	l3.SetFirstPoint(0,0,0);
	138	l3.UpdateToFirstPoint();
	139	}
	140
04a02430	141	//const Float_t kpid=kesdtrack->GetPID();
	142	const Int_t knhits=kesdtrack->GetNHits();
	143	const Int_t kweight=kesdtrack->GetWeight();
e43c01f2	144	//cout << i << " " << kweight << " " << knhits << endl;
	145	if((fMinHits>0) && (knhits<fMinHits)) continue;
	146	if(kweight>1000) continue; //avoid ghosts
04a02430	147	if((fMinWeight>0) && (kweight<fMinWeight)) continue;
5d60c8f9	148
04a02430	149	const Float_t kpx=kesdtrack->GetPx();
	150	const Float_t kpy=kesdtrack->GetPy();
	151	const Float_t kpz=kesdtrack->GetPz();
	152	const Float_t kpt=kesdtrack->GetPt();
	153	const Float_t kp=TMath::Sqrt(kpzkpz+kptkpt);
	154	const Float_t keta=0.5*TMath::Log((kp+kpz+1e-30)/(kp-kpz+1e-30));
	155	const Float_t kphi=TMath::Pi()+TMath::ATan2(-kpy,-kpx);
5d60c8f9	156
04a02430	157	if(IsAcceptedParticle(kpt,kphi,keta))
301a24f1	158	fEventParticles->AddParticle(kpx,kpy,kpz,kp,i,kesdtrack->GetMCid(),knhits,kpt,kphi,keta);
04a02430	159	} //loop over tracks
5d60c8f9	160
5d60c8f9	161	return kTRUE;
5d60c8f9	162	}