Dixed a crash when no proper files/data to display (Mikolaj)

[u/mrichter/AliRoot.git] / JETAN / AliJetHadronCorrectionv1.cxx

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//===============================================================
// To be modified for hadron correction using particle ID and track merging
// Author : magali.estienne@ires.in2p3.fr
//===============================================================
// Author : Mark Horner (LBL/UCT)

// --- Standard library ---
#include "Riostream.h"
#include "TMath.h"

// --- AliRoot header files ---
//#include "../EMCAL/AliJetGeometry.h"
#include "AliJetDummyGeo.h"
#include "AliJetHadronCorrectionv1.h"

ClassImp(AliJetHadronCorrectionv1)

Double_t AliJetHadronCorrectionv1::fgParLookup[HCPARAMETERS][HCPARAMETERSETS] = 
{  
    {-2.82271e-4 , -2.39954e-4},   
    {2.50796e-2  , 2.07172e-2},   
    {1.02861e-3  , 1.48576e-3},   
    {2.11539e-2  , -1.38473-2},   
    {2.27003e-2  , 2.78252e-2},   
    {1.65078e-6  , 1.51821e-6}
};

AliJetHadronCorrectionv1* AliJetHadronCorrectionv1::fgHadrCorr = 0;

void AliJetHadronCorrectionv1::SetGeometry(AliJetDummyGeo *geometry)
{
  // Initialise EMCAL geometry
    if (!geometry)
    {
	SetParameters();
	fSamplingFraction = geometry->GetSampling();
	cout<<"Setting the sampling fraction to :"<<fSamplingFraction<<endl; 
    }else
    {
        SetParameters(geometry->GetName());
	fSamplingFraction = geometry->GetSampling();
	cout<<"Setting the sampling fraction to :"<<fSamplingFraction<<endl; 
    }
    return;	
}	

/*
###########################################################################
###########################################################################

This will have to be modified with the inclusion of the new EMCAL geometry
That means I guess a new study of the hadron correction...

Geometry : SHISH...

###########################################################################
###########################################################################
*/



	
void AliJetHadronCorrectionv1::SetGeometry(TString name,Double_t fs)
{
  // Initialise EMCAL geometry
  cout << "Setting sampling fraction to "<<fSamplingFraction<<endl;	
   fSamplingFraction = fs;	
  if ( name == ""              ||
       name == "EMCAL_5655_21" ||
       name == "EMCALArch1a"   ||
       name == "EMCALArch1aN"  ||
       name == "G56_2_55_19"   ||
       name == "G56_2_55_19_104_14" )
  { // set parameters to this hadron correction
     cout<<"HC parameters!"<<endl;
     for (Int_t i=0;i<6;i++)
     {
	   fPar[i] = fgParLookup[i][0];  
	   cout <<fPar[i]<<endl;
     }
  }else if( name == "EMCAL_6564_21" ||  
	    name == "G65_2_64_19" )
  {	  
      cout<<"HC parameters!"<<endl;
     for (Int_t i=0;i<6;i++)
     {
	   fPar[i] = fgParLookup[i][1];  
	   cout <<fPar[i]<<endl;
     }
  }else
  {
    printf("Geometry not defined in hadron correction\n"); 
  }	  
	
}	

AliJetHadronCorrectionv1::AliJetHadronCorrectionv1() 
    :AliJetHadronCorrection(), 
     fSamplingFraction(0)
{
}
	
AliJetHadronCorrectionv1::AliJetHadronCorrectionv1(const char *name,const char *title) 
    :AliJetHadronCorrection(name, title), 
     fSamplingFraction(0)
{
  fgHadrCorr = this;
}

/*
AliJetHadronCorrectionv1::AliJetHadronCorrectionv1(const char *name,const char *title,AliJetGeometry *geometry)
{

  fHadrCorr = this;
  SetGeometry(geometry);  
	
}	
*/

AliJetHadronCorrectionv1*
AliJetHadronCorrectionv1::Instance()
{
  // return pointer to global instance. Instantiate if needed
  if (! fgHadrCorr) new AliJetHadronCorrectionv1();
  return fgHadrCorr;
}

Double_t 
AliJetHadronCorrectionv1::GetEnergy(Double_t pmom, Double_t eta, Int_t /*gid*/)
{
  // Return parametrised energy response
  Double_t etai = TMath::Abs(eta); 
  Double_t value =  fPar[5]*pmom*pmom*pmom+ fPar[0]*pmom*pmom+fPar[1]*pmom +fPar[2]*pmom*etai +fPar[3]*etai + fPar[4];
  return fSamplingFraction*value;
   
}