[u/mrichter/AliRoot.git] / EMCAL / AliEMCALSDigitizer.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.                  *
 **************************************************************************/

/* $Id$ */

//_________________________________________________________________________
// This is a TTask that makes SDigits out of Hits
// A Summable Digits is the sum of all hits originating 
// from one in one tower of the EMCAL 
// A threshold for assignment of the primary to SDigit is applied 
// SDigits are written to TreeS, branch "EMCAL"
// AliEMCALSDigitizer with all current parameters is written 
// to TreeS branch "AliEMCALSDigitizer".
// Both branches have the same title. If necessary one can produce 
// another set of SDigits with different parameters. Two versions
// can be distunguished using titles of the branches.
// User case:
// root [0] AliEMCALSDigitizer * s = new AliEMCALSDigitizer("galice.root")
// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
// root [1] s->ExecuteTask()
//             // Makes SDigitis for all events stored in galice.root
// root [2] s->SetPedestalParameter(0.001)
//             // One can change parameters of digitization
// root [3] s->SetSDigitsBranch("Redestal 0.001")
//             // and write them into the new branch
// root [4] s->ExeciteTask("deb all tim")
//             // available parameters:
//             deb - print # of produced SDigitis
//             deb all  - print # and list of produced SDigits
//             tim - print benchmarking information
//
//*-- Author : Sahal Yacoob (LBL)
// based on  : AliPHOSSDigitzer 
//////////////////////////////////////////////////////////////////////////////


// --- ROOT system ---
#include "TFile.h"
#include "TTask.h"
#include "TTree.h"
#include "TSystem.h"
#include "TROOT.h"
#include "TFolder.h"
#include "TBenchmark.h"
// --- Standard library ---
#include <iomanip.h>

// --- AliRoot header files ---
#include "AliRun.h"
#include "AliEMCALDigit.h"
#include "AliEMCALHit.h"
#include "AliEMCALSDigitizer.h"
#include "AliEMCALGeometry.h"
#include "AliEMCALv1.h"
#include "AliEMCALGetter.h"

ClassImp(AliEMCALSDigitizer)

           
//____________________________________________________________________________ 
  AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("AliEMCALSDigitizer","") 
{
  // ctor
  fA = fB =  fNevents = 0 ; 
  fTowerPrimThreshold = fPreShowerPrimThreshold = fPhotonElectronFactor  = 0. ;
  fHits = fSDigits = fSDigits = 0 ;

  fIsInitialized = kFALSE ;


}

//____________________________________________________________________________ 
AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
{
  // ctor
  fA = 0;
  fB = 10000000.;
  fTowerPrimThreshold = 0.01 ;
  fPreShowerPrimThreshold = 0.0001 ; 
  fNevents = 0 ; 
  fPhotonElectronFactor = 5000. ; // photoelectrons per GeV 
  Init();
}

//____________________________________________________________________________ 
AliEMCALSDigitizer::~AliEMCALSDigitizer()
{
  // dtor
  if(fSDigits)
    delete fSDigits ;
  if(fHits)
    delete fHits ;
}
//____________________________________________________________________________ 
void AliEMCALSDigitizer::Init(){

  // Initialization: open root-file, allocate arrays for hits and sdigits,
  // attach task SDigitizer to the list of PHOS tasks
  // 
  // Initialization can not be done in the default constructor
  //============================================================= YS
  //  The initialisation is now done by the getter

if( strcmp(GetTitle(), "") == 0 )
    SetTitle("galice.root") ;
  
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;     
  if ( gime == 0 ) {
    cerr << "ERROR: AliEMCALSDigitizer::Init -> Could not obtain the Getter object !" << endl ; 
    return ;
  } 
  
  gime->PostSDigits( GetName(), GetTitle() ) ; 

  TString sdname(GetName() );
  sdname.Append(":") ;
  sdname.Append(GetTitle() ) ;
  SetName(sdname.Data()) ;
  gime->PostSDigitizer(this) ;
 
 
 }
//____________________________________________________________________________
void AliEMCALSDigitizer::Exec(Option_t *option) { 

// Collects all hits in the same active volume into digit
 
  if( strcmp(GetName(), "") == 0 )
    Init() ;
  
  if (strstr(option, "print") ) {
    Print("") ; 
    return ; 
  }
  
  if(strstr(option,"tim"))
    gBenchmark->Start("EMCALSDigitizer");


  //Check, if this branch already exits
  gAlice->GetEvent(0) ;
 
  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;

  if(gAlice->TreeS() ) {
    TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
    TIter next(lob) ; 
    TBranch * branch = 0 ;  
    Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ; 
    
     while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound || !sdigitizerfound) ) {
      if ( (strcmp(branch->GetName(), "EMCAL")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) 
	emcalfound = kTRUE ;
      
      else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && (strcmp(branch->GetTitle(), sdname)==0) ) 
	sdigitizerfound = kTRUE ; 
    }
    
    if ( emcalfound || sdigitizerfound ) {
      cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName() 
	   << " already exits" << endl ;
      return ; 
    }   
  }  

  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;  
  Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ; 
  
  Int_t ievent ;
  for(ievent = 0; ievent < nevents; ievent++){
    gime->Event(ievent,"H") ;
    const TClonesArray * fHits = gime->Hits() ;
    TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
    sdigits->Clear();
    Int_t nSdigits = 0 ;

  //Collects all hits in the same active volume into digit
  
  
    //Now made SDigits from hits, for EMCAL it is the same, so just copy    
    //  Int_t itrack ;
    // for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
    //gime->Track(itrack);  
      //=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
     
      Int_t i;
      for ( i = 0 ; i < fHits->GetEntries() ; i++ ) { // loop over all hits (hit = deposited energy/layer/entering particle)
	AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(fHits->At(i)) ;
        AliEMCALDigit * curSDigit = 0 ;
        AliEMCALDigit * sdigit = 0 ;
        Bool_t newsdigit = kTRUE; 

	
	// Assign primary number only if deposited energy is significant
	  
	if( (!hit->IsInPreShower() && hit->GetEnergy() > fTowerPrimThreshold) || 
	    (hit->IsInPreShower() && hit->GetEnergy() > fPreShowerPrimThreshold)) {
	  curSDigit =  new AliEMCALDigit( hit->GetPrimary(),
					  hit->GetIparent(),Layer2TowerID(hit->GetId(),hit->IsInPreShower()), 
					  Digitize(hit->GetEnergy()), 
					  hit->GetTime()) ;
	} else {
	  curSDigit =  new AliEMCALDigit( -1               , 
					  -1               ,
					  Layer2TowerID(hit->GetId(),hit->IsInPreShower()), 
					  Digitize(hit->GetEnergy()), 
					  hit->GetTime() ) ;	
	}
	Int_t check = 0 ;
	for(check= 0; check < nSdigits ; check++) {
          sdigit = (AliEMCALDigit *)sdigits->At(check);
          if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same tower or the same preshower ?              
	      *sdigit = *sdigit + *curSDigit;
   
	      newsdigit = kFALSE;
	  }
	}
	if (newsdigit) { 
	  new((*sdigits)[nSdigits])  AliEMCALDigit(*curSDigit);
	  nSdigits++ ;  
	}
      }  // loop over all hits (hit = deposited energy/layer/entering particle)
      //    } // loop over tracks
      
      sdigits->Sort() ;
      
      nSdigits = sdigits->GetEntriesFast() ;
      sdigits->Expand(nSdigits) ;
      
      //  Int_t i ;
     const AliEMCALGeometry * geom = gime->EMCALGeometry() ; 
     
     Int_t lastPreShowerIndex = nSdigits - 1 ;
     if (!(dynamic_cast<AliEMCALDigit *>(sdigits->At(lastPreShowerIndex))->IsInPreShower()))
       lastPreShowerIndex = -2; 
     Int_t firstPreShowerIndex = 100000 ; 
     Int_t index ; 
     AliEMCALDigit * sdigit = 0 ;
     for ( index = 0; index < nSdigits ; index++) {
       sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) ) ;
       if (sdigit->IsInPreShower() ){ 
	 firstPreShowerIndex = index ;
	 break ;
       }
     }
     
    AliEMCALDigit * preshower ;
    AliEMCALDigit * tower ;
    Int_t lastIndex = lastPreShowerIndex +1 ; 


    for (index = firstPreShowerIndex ; index <= lastPreShowerIndex; index++) {
      preshower = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) ); 
      Bool_t towerFound = kFALSE ;
      Int_t jndex ; 
      for (jndex = 0; jndex < firstPreShowerIndex; jndex++) {
	tower  = dynamic_cast<AliEMCALDigit *>(sdigits->At(jndex) ); 
	if ( (preshower->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) == tower->GetId() ) {	  
	  Float_t towerEnergy  = static_cast<Float_t>(tower->GetAmp()) ; 
	  Float_t preshoEnergy = static_cast<Float_t>(preshower->GetAmp()) ; 
	  towerEnergy +=preshoEnergy ; 
	  *tower = *tower + *preshower    ; // and add preshower multiplied by layer ratio to tower
	  tower->SetAmp(static_cast<Int_t>(TMath::Ceil(towerEnergy))) ; 
	  towerFound = kTRUE ;
	}
      }
      if ( !towerFound ) { 

	new((*sdigits)[lastIndex])  AliEMCALDigit(*preshower);
	AliEMCALDigit * temp = dynamic_cast<AliEMCALDigit *>(sdigits->At(lastIndex)) ;
	temp->SetId(temp->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) ;
	lastIndex++ ; 
      }
    }
    
    sdigits->Sort() ;
    Int_t NPrimarymax = -1 ; 
    for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) { 
      sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
      sdigit->SetIndexInList(i) ;
    }
    
    for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) { 
	 if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > NPrimarymax)
	   NPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
       }
       if(gAlice->TreeS() == 0)
	gAlice->MakeTree("S") ;      
      
      //Make (if necessary) branches    
      char * file =0;
      if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
	file = new char[strlen(gAlice->GetBaseFile())+20] ;
	sprintf(file,"%s/EMCAL.SDigits.root",gAlice->GetBaseFile()) ;
      }
      
      TDirectory *cwd = gDirectory;
      
      //First list of sdigits
      Int_t bufferSize = 32000 ;    
      TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
      sdigitsBranch->SetTitle(sdname);
      
      if (file) {
	sdigitsBranch->SetFile(file);
	TIter next( sdigitsBranch->GetListOfBranches());
	TBranch * subbr;
	while ((subbr=(TBranch*)next())) {
	  subbr->SetFile(file);
	}   
	cwd->cd();
      } 
      
      //second - SDigitizer
      Int_t splitlevel = 0 ;
      AliEMCALSDigitizer * sd = this ;
      TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
							   &sd,bufferSize,splitlevel); 
      sdigitizerBranch->SetTitle(sdname);
      if (file) {
	sdigitizerBranch->SetFile(file);
	TIter next( sdigitizerBranch->GetListOfBranches());
	TBranch * subbr ;
	while ((subbr=(TBranch*)next())) {
	  subbr->SetFile(file);
	}   
	cwd->cd();
	delete file;
      }
      
      sdigitsBranch->Fill() ;
      sdigitizerBranch->Fill() ;
      gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
      
      if(strstr(option,"deb"))
	PrintSDigits(option) ;
      
  }
  
  if(strstr(option,"tim")){
    gBenchmark->Stop("EMCALSDigitizer");
    cout << "AliEMCALSDigitizer:" << endl ;
    cout << "   took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing " 
	 <<  gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
    cout << endl ;
  }
  
  
}
//__________________________________________________________________
void AliEMCALSDigitizer::SetSDigitsBranch(const char * title ){
 
  // Setting title to branch SDigits 

  TString stitle(title) ;

  // check if branch with title already exists
  TBranch * sdigitsBranch    = 
    static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("EMCAL")) ; 
  TBranch * sdigitizerBranch =  
    static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
  const char * sdigitsTitle    = sdigitsBranch ->GetTitle() ;  
  const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
  if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
    cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
    return ;
  }
  
  cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;

  SetName(title) ; 
    
  // Post to the WhiteBoard
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ; 
  gime->PostSDigits( title, GetTitle()) ; 


}
//__________________________________________________________________
void AliEMCALSDigitizer::Print(Option_t* option)const{
  cout << "------------------- "<< GetName() << " -------------" << endl ;
  cout << "   Writing SDigitis to branch with title  " << GetName() << endl ;
  cout << "   with digitization parameters  A               = " << fA << endl ;
  cout << "                                 B               = " << fB << endl ;
  cout << "   Threshold for Primary assignment in Tower     = " << fTowerPrimThreshold << endl ; 
  cout << "   Threshold for Primary assignment in PreShower = " << fPreShowerPrimThreshold << endl ; 
  cout << "---------------------------------------------------"<<endl ;
  
}
//__________________________________________________________________
Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
  if( (fA==sd.fA)&&(fB==sd.fB)&&
      (fTowerPrimThreshold==sd.fTowerPrimThreshold) &&
      (fPreShowerPrimThreshold==sd.fPreShowerPrimThreshold))
    return kTRUE ;
  else
    return kFALSE ;
}
//__________________________________________________________________
void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
  //Prints list of digits produced at the current pass of AliEMCALDigitizer
  
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ; 
  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;
  const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ; 
  
  cout << "AliEMCALSDigitiser: event " << gAlice->GetEvNumber() << endl ;
  cout << "      Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
  cout << endl ;
  if(strstr(option,"all")||strstr(option,"EMC")){

    //loop over digits
    AliEMCALDigit * digit;
    cout << "SDigit Id " << " Amplitude " <<  "     Time " << "     Index "  <<  " Nprim " << " Primaries list " <<  endl;    
    Int_t index ;
    for (index = 0 ; index < sdigits->GetEntries() ; index++) {
      digit = (AliEMCALDigit * )  sdigits->At(index) ;
      cout << setw(6)  <<  digit->GetId() << "   "  << 	setw(10)  <<  digit->GetAmp() <<   "    "  << digit->GetTime()
	   << setw(6)  <<  digit->GetIndexInList() << "    "   
	   << setw(5)  <<  digit->GetNprimary() <<"    ";
      
      Int_t iprimary;
      for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	cout << " "  <<  digit->GetPrimary(iprimary+1) << "  ";
      cout << endl;  	 
    }
    cout <<endl;
  }
}
//________________________________________________________________________
Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t ihit, Bool_t preshower){
  // Method to Transform from Hit Id to Digit Id
  // This function should be one to one
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
  const AliEMCALGeometry * geom = gime->EMCALGeometry();
  Int_t ieta  = ((ihit-1)/geom->GetNPhi())%geom->GetNZ(); // eta Tower Index
  Int_t iphi = (ihit-1)%(geom->GetNPhi())+1; //phi Tower Index
  Int_t it = -10;
  Int_t ipre = 0;

  if (preshower)ipre = 1;
  if (iphi > 0 && ieta >= 0){
    it = iphi+ieta*geom->GetNPhi() + ipre*geom->GetNPhi()*geom->GetNZ();
    return it;
  }else{
    cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Eta number = "
	 << ieta << "Phi number = " << iphi << endl ;
    return it;
  } // end if iphi>0 && ieta>0
}
//_______________________________________________________________________________________
// void AliEMCALSDigitizer::TestTowerID(void)
// {
//   Int_t j;

//   Bool_t preshower = kFALSE;
//   for (j = 0 ; j < 10 ; j++){  // loop over hit id
//     Int_t i;
//    for (i = 0 ; i <= 2 ; i++){  // loop over 
//      Int_t k = i*96*144+j*144+1;
//       cout << " Hit Index = " << k << "   " << j*10 << "   TOWERID = " <<  Layer2TowerID(k, preshower) << endl ;
//     }
//   }
// }
Commit	Line	Data
ffa6d63b	1	/*************************************************************************
61e0abb5	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	/* $Id$ */
	17
	18	//_________________________________________________________________________
	19	// This is a TTask that makes SDigits out of Hits
	20	// A Summable Digits is the sum of all hits originating
ffa6d63b	21	// from one in one tower of the EMCAL
61e0abb5	22	// A threshold for assignment of the primary to SDigit is applied
	23	// SDigits are written to TreeS, branch "EMCAL"
	24	// AliEMCALSDigitizer with all current parameters is written
	25	// to TreeS branch "AliEMCALSDigitizer".
	26	// Both branches have the same title. If necessary one can produce
	27	// another set of SDigits with different parameters. Two versions
	28	// can be distunguished using titles of the branches.
	29	// User case:
	30	// root [0] AliEMCALSDigitizer * s = new AliEMCALSDigitizer("galice.root")
	31	// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
	32	// root [1] s->ExecuteTask()
	33	// // Makes SDigitis for all events stored in galice.root
	34	// root [2] s->SetPedestalParameter(0.001)
	35	// // One can change parameters of digitization
	36	// root [3] s->SetSDigitsBranch("Redestal 0.001")
	37	// // and write them into the new branch
	38	// root [4] s->ExeciteTask("deb all tim")
	39	// // available parameters:
	40	// deb - print # of produced SDigitis
	41	// deb all - print # and list of produced SDigits
	42	// tim - print benchmarking information
	43	//
ffa6d63b	44	//*-- Author : Sahal Yacoob (LBL)
ffa6d63b	45	// based on : AliPHOSSDigitzer
61e0abb5	46	//////////////////////////////////////////////////////////////////////////////
	47
	48
	49	// --- ROOT system ---
	50	#include "TFile.h"
	51	#include "TTask.h"
	52	#include "TTree.h"
	53	#include "TSystem.h"
	54	#include "TROOT.h"
	55	#include "TFolder.h"
	56	#include "TBenchmark.h"
	57	// --- Standard library ---
	58	#include <iomanip.h>
	59
	60	// --- AliRoot header files ---
	61	#include "AliRun.h"
	62	#include "AliEMCALDigit.h"
	63	#include "AliEMCALHit.h"
	64	#include "AliEMCALSDigitizer.h"
	65	#include "AliEMCALGeometry.h"
	66	#include "AliEMCALv1.h"
814ad4bf	67	#include "AliEMCALGetter.h"
61e0abb5	68
	69	ClassImp(AliEMCALSDigitizer)
	70
	71
	72	//____________________________________________________________________________
	73	AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("AliEMCALSDigitizer","")
	74	{
	75	// ctor
89e103bd	76	fA = fB = fNevents = 0 ;
	77	fTowerPrimThreshold = fPreShowerPrimThreshold = fPhotonElectronFactor = 0. ;
	78	fHits = fSDigits = fSDigits = 0 ;
	79
61e0abb5	80	fIsInitialized = kFALSE ;
61e0abb5	81
89e103bd	82
61e0abb5	83	}
	84
	85	//____________________________________________________________________________
814ad4bf	86	AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
61e0abb5	87	{
	88	// ctor
	89	fA = 0;
	90	fB = 10000000.;
89e103bd	91	fTowerPrimThreshold = 0.01 ;
89e103bd	92	fPreShowerPrimThreshold = 0.0001 ;
814ad4bf	93	fNevents = 0 ;
89e103bd	94	fPhotonElectronFactor = 5000. ; // photoelectrons per GeV
814ad4bf	95	Init();
61e0abb5	96	}
	97
	98	//____________________________________________________________________________
	99	AliEMCALSDigitizer::~AliEMCALSDigitizer()
	100	{
	101	// dtor
	102	if(fSDigits)
	103	delete fSDigits ;
	104	if(fHits)
	105	delete fHits ;
	106	}
	107	//____________________________________________________________________________
	108	void AliEMCALSDigitizer::Init(){
61e0abb5	109
814ad4bf	110	// Initialization: open root-file, allocate arrays for hits and sdigits,
	111	// attach task SDigitizer to the list of PHOS tasks
	112	//
	113	// Initialization can not be done in the default constructor
	114	//============================================================= YS
	115	// The initialisation is now done by the getter
61e0abb5	116
814ad4bf	117	if( strcmp(GetTitle(), "") == 0 )
	118	SetTitle("galice.root") ;
	119
	120	AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;
	121	if ( gime == 0 ) {
	122	cerr << "ERROR: AliEMCALSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
	123	return ;
	124	}
	125
	126	gime->PostSDigits( GetName(), GetTitle() ) ;
61e0abb5	127
814ad4bf	128	TString sdname(GetName() );
	129	sdname.Append(":") ;
	130	sdname.Append(GetTitle() ) ;
97f3344e	131	SetName(sdname.Data()) ;
814ad4bf	132	gime->PostSDigitizer(this) ;
814ad4bf	133
814ad4bf	134
814ad4bf	135	}
61e0abb5	136	//____________________________________________________________________________
61e0abb5	137	void AliEMCALSDigitizer::Exec(Option_t *option) {
61e0abb5	138
814ad4bf	139	// Collects all hits in the same active volume into digit
	140
	141	if( strcmp(GetName(), "") == 0 )
	142	Init() ;
61e0abb5	143
814ad4bf	144	if (strstr(option, "print") ) {
	145	Print("") ;
	146	return ;
	147	}
61e0abb5	148
814ad4bf	149	if(strstr(option,"tim"))
814ad4bf	150	gBenchmark->Start("EMCALSDigitizer");
97f3344e	151
97f3344e	152
814ad4bf	153	//Check, if this branch already exits
814ad4bf	154	gAlice->GetEvent(0) ;
97f3344e	155
	156	TString sdname(GetName()) ;
	157	sdname.Remove(sdname.Index(GetTitle())-1) ;
	158
814ad4bf	159	if(gAlice->TreeS() ) {
	160	TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
	161	TIter next(lob) ;
	162	TBranch * branch = 0 ;
	163	Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ;
61e0abb5	164
97f3344e	165	while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound \|\| !sdigitizerfound) ) {
814ad4bf	166	if ( (strcmp(branch->GetName(), "EMCAL")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
	167	emcalfound = kTRUE ;
	168
97f3344e	169	else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && (strcmp(branch->GetTitle(), sdname)==0) )
814ad4bf	170	sdigitizerfound = kTRUE ;
61e0abb5	171	}
61e0abb5	172
814ad4bf	173	if ( emcalfound \|\| sdigitizerfound ) {
	174	cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
	175	<< " already exits" << endl ;
	176	return ;
	177	}
	178	}
97f3344e	179
814ad4bf	180	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
814ad4bf	181	Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
	182
	183	Int_t ievent ;
	184	for(ievent = 0; ievent < nevents; ievent++){
	185	gime->Event(ievent,"H") ;
	186	const TClonesArray * fHits = gime->Hits() ;
	187	TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
	188	sdigits->Clear();
61e0abb5	189	Int_t nSdigits = 0 ;
814ad4bf	190
	191	//Collects all hits in the same active volume into digit
	192
	193
61e0abb5	194
	195
	196	//Now made SDigits from hits, for EMCAL it is the same, so just copy
814ad4bf	197	// Int_t itrack ;
	198	// for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
	199	//gime->Track(itrack);
61e0abb5	200	//=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
89e103bd	201
61e0abb5	202	Int_t i;
e1f60236	203	for ( i = 0 ; i < fHits->GetEntries() ; i++ ) { // loop over all hits (hit = deposited energy/layer/entering particle)
	204	AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(fHits->At(i)) ;
	205	AliEMCALDigit * curSDigit = 0 ;
	206	AliEMCALDigit * sdigit = 0 ;
ffa6d63b	207	Bool_t newsdigit = kTRUE;
e1f60236	208
89e103bd	209
89e103bd	210
e1f60236	211	// Assign primary number only if deposited energy is significant
e1f60236	212
89e103bd	213	if( (!hit->IsInPreShower() && hit->GetEnergy() > fTowerPrimThreshold) \|\|
	214	(hit->IsInPreShower() && hit->GetEnergy() > fPreShowerPrimThreshold)) {
	215	curSDigit = new AliEMCALDigit( hit->GetPrimary(),
e1f60236	216	hit->GetIparent(),Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
89e103bd	217	Digitize(hit->GetEnergy()),
814ad4bf	218	hit->GetTime()) ;
89e103bd	219	} else {
814ad4bf	220	curSDigit = new AliEMCALDigit( -1 ,
814ad4bf	221	-1 ,
e1f60236	222	Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
89e103bd	223	Digitize(hit->GetEnergy()),
e1f60236	224	hit->GetTime() ) ;
89e103bd	225	}
e1f60236	226	Int_t check = 0 ;
e1f60236	227	for(check= 0; check < nSdigits ; check++) {
814ad4bf	228	sdigit = (AliEMCALDigit *)sdigits->At(check);
e1f60236	229	if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same tower or the same preshower ?
	230	sdigit = sdigit + *curSDigit;
	231
	232	newsdigit = kFALSE;
	233	}
814ad4bf	234	}
e1f60236	235	if (newsdigit) {
e1f60236	236	new((sdigits)[nSdigits]) AliEMCALDigit(curSDigit);
ffa6d63b	237	nSdigits++ ;
e1f60236	238	}
e1f60236	239	} // loop over all hits (hit = deposited energy/layer/entering particle)
814ad4bf	240	// } // loop over tracks
e1f60236	241
814ad4bf	242	sdigits->Sort() ;
61e0abb5	243
814ad4bf	244	nSdigits = sdigits->GetEntriesFast() ;
	245	sdigits->Expand(nSdigits) ;
	246
	247	// Int_t i ;
e1f60236	248	const AliEMCALGeometry * geom = gime->EMCALGeometry() ;
e1f60236	249
229f77c4	250	Int_t lastPreShowerIndex = nSdigits - 1 ;
	251	if (!(dynamic_cast<AliEMCALDigit *>(sdigits->At(lastPreShowerIndex))->IsInPreShower()))
	252	lastPreShowerIndex = -2;
89e103bd	253	Int_t firstPreShowerIndex = 100000 ;
e1f60236	254	Int_t index ;
	255	AliEMCALDigit * sdigit = 0 ;
	256	for ( index = 0; index < nSdigits ; index++) {
	257	sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) ) ;
	258	if (sdigit->IsInPreShower() ){
	259	firstPreShowerIndex = index ;
	260	break ;
	261	}
	262	}
	263
	264	AliEMCALDigit * preshower ;
	265	AliEMCALDigit * tower ;
	266	Int_t lastIndex = lastPreShowerIndex +1 ;
	267
	268
	269	for (index = firstPreShowerIndex ; index <= lastPreShowerIndex; index++) {
	270	preshower = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) );
	271	Bool_t towerFound = kFALSE ;
	272	Int_t jndex ;
	273	for (jndex = 0; jndex < firstPreShowerIndex; jndex++) {
	274	tower = dynamic_cast<AliEMCALDigit *>(sdigits->At(jndex) );
89e103bd	275	if ( (preshower->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) == tower->GetId() ) {
	276	Float_t towerEnergy = static_cast<Float_t>(tower->GetAmp()) ;
	277	Float_t preshoEnergy = static_cast<Float_t>(preshower->GetAmp()) ;
	278	towerEnergy +=preshoEnergy ;
	279	tower = tower + *preshower ; // and add preshower multiplied by layer ratio to tower
	280	tower->SetAmp(static_cast<Int_t>(TMath::Ceil(towerEnergy))) ;
e1f60236	281	towerFound = kTRUE ;
	282	}
	283	}
	284	if ( !towerFound ) {
	285
	286	new((sdigits)[lastIndex]) AliEMCALDigit(preshower);
	287	AliEMCALDigit * temp = dynamic_cast<AliEMCALDigit *>(sdigits->At(lastIndex)) ;
	288	temp->SetId(temp->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) ;
	289	lastIndex++ ;
	290	}
	291	}
229f77c4	292
e1f60236	293	sdigits->Sort() ;
229f77c4	294	Int_t NPrimarymax = -1 ;
	295	for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
	296	sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
	297	sdigit->SetIndexInList(i) ;
	298	}
	299
	300	for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
	301	if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > NPrimarymax)
	302	NPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
	303	}
	304	if(gAlice->TreeS() == 0)
97f3344e	305	gAlice->MakeTree("S") ;
814ad4bf	306
	307	//Make (if necessary) branches
	308	char * file =0;
	309	if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
	310	file = new char[strlen(gAlice->GetBaseFile())+20] ;
	311	sprintf(file,"%s/EMCAL.SDigits.root",gAlice->GetBaseFile()) ;
61e0abb5	312	}
61e0abb5	313
814ad4bf	314	TDirectory *cwd = gDirectory;
	315
	316	//First list of sdigits
	317	Int_t bufferSize = 32000 ;
	318	TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
	319	sdigitsBranch->SetTitle(sdname);
814ad4bf	320
	321	if (file) {
	322	sdigitsBranch->SetFile(file);
	323	TIter next( sdigitsBranch->GetListOfBranches());
	324	TBranch * subbr;
	325	while ((subbr=(TBranch*)next())) {
	326	subbr->SetFile(file);
	327	}
	328	cwd->cd();
	329	}
	330
	331	//second - SDigitizer
	332	Int_t splitlevel = 0 ;
	333	AliEMCALSDigitizer * sd = this ;
	334	TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
	335	&sd,bufferSize,splitlevel);
	336	sdigitizerBranch->SetTitle(sdname);
	337	if (file) {
	338	sdigitizerBranch->SetFile(file);
	339	TIter next( sdigitizerBranch->GetListOfBranches());
	340	TBranch * subbr ;
	341	while ((subbr=(TBranch*)next())) {
	342	subbr->SetFile(file);
	343	}
	344	cwd->cd();
	345	delete file;
	346	}
	347
	348	sdigitsBranch->Fill() ;
	349	sdigitizerBranch->Fill() ;
	350	gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
	351
	352	if(strstr(option,"deb"))
	353	PrintSDigits(option) ;
	354
61e0abb5	355	}
	356
	357	if(strstr(option,"tim")){
	358	gBenchmark->Stop("EMCALSDigitizer");
	359	cout << "AliEMCALSDigitizer:" << endl ;
	360	cout << " took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing "
	361	<< gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
	362	cout << endl ;
	363	}
	364
	365
	366	}
	367	//__________________________________________________________________
	368	void AliEMCALSDigitizer::SetSDigitsBranch(const char * title ){
814ad4bf	369
	370	// Setting title to branch SDigits
	371
	372	TString stitle(title) ;
	373
	374	// check if branch with title already exists
	375	TBranch * sdigitsBranch =
	376	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("EMCAL")) ;
	377	TBranch * sdigitizerBranch =
	378	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
	379	const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
	380	const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
	381	if ( stitle.CompareTo(sdigitsTitle)==0 \|\| stitle.CompareTo(sdigitizerTitle)==0 ){
	382	cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
	383	return ;
	384	}
	385
	386	cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
	387
	388	SetName(title) ;
	389
	390	// Post to the WhiteBoard
	391	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	392	gime->PostSDigits( title, GetTitle()) ;
	393
	394
61e0abb5	395	}
	396	//__________________________________________________________________
	397	void AliEMCALSDigitizer::Print(Option_t* option)const{
	398	cout << "------------------- "<< GetName() << " -------------" << endl ;
814ad4bf	399	cout << " Writing SDigitis to branch with title " << GetName() << endl ;
89e103bd	400	cout << " with digitization parameters A = " << fA << endl ;
	401	cout << " B = " << fB << endl ;
	402	cout << " Threshold for Primary assignment in Tower = " << fTowerPrimThreshold << endl ;
	403	cout << " Threshold for Primary assignment in PreShower = " << fPreShowerPrimThreshold << endl ;
61e0abb5	404	cout << "---------------------------------------------------"<<endl ;
	405
	406	}
	407	//__________________________________________________________________
	408	Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
89e103bd	409	if( (fA==sd.fA)&&(fB==sd.fB)&&
	410	(fTowerPrimThreshold==sd.fTowerPrimThreshold) &&
	411	(fPreShowerPrimThreshold==sd.fPreShowerPrimThreshold))
61e0abb5	412	return kTRUE ;
	413	else
	414	return kFALSE ;
	415	}
	416	//__________________________________________________________________
	417	void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
	418	//Prints list of digits produced at the current pass of AliEMCALDigitizer
	419
814ad4bf	420	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	421	TString sdname(GetName()) ;
	422	sdname.Remove(sdname.Index(GetTitle())-1) ;
	423	const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
61e0abb5	424
814ad4bf	425	cout << "AliEMCALSDigitiser: event " << gAlice->GetEvNumber() << endl ;
	426	cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
	427	cout << endl ;
	428	if(strstr(option,"all")\|\|strstr(option,"EMC")){
	429
61e0abb5	430	//loop over digits
61e0abb5	431	AliEMCALDigit * digit;
e1f60236	432	cout << "SDigit Id " << " Amplitude " << " Time " << " Index " << " Nprim " << " Primaries list " << endl;
61e0abb5	433	Int_t index ;
814ad4bf	434	for (index = 0 ; index < sdigits->GetEntries() ; index++) {
	435	digit = (AliEMCALDigit * ) sdigits->At(index) ;
	436	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " " << digit->GetTime()
	437	<< setw(6) << digit->GetIndexInList() << " "
	438	<< setw(5) << digit->GetNprimary() <<" ";
61e0abb5	439
	440	Int_t iprimary;
	441	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
814ad4bf	442	cout << " " << digit->GetPrimary(iprimary+1) << " ";
61e0abb5	443	cout << endl;
61e0abb5	444	}
814ad4bf	445	cout <<endl;
61e0abb5	446	}
61e0abb5	447	}
814ad4bf	448	//________________________________________________________________________
229f77c4	449	Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t ihit, Bool_t preshower){
	450	// Method to Transform from Hit Id to Digit Id
	451	// This function should be one to one
814ad4bf	452	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
814ad4bf	453	const AliEMCALGeometry * geom = gime->EMCALGeometry();
f063936c	454	Int_t ieta = ((ihit-1)/geom->GetNPhi())%geom->GetNZ(); // eta Tower Index
229f77c4	455	Int_t iphi = (ihit-1)%(geom->GetNPhi())+1; //phi Tower Index
	456	Int_t it = -10;
	457	Int_t ipre = 0;
814ad4bf	458
229f77c4	459	if (preshower)ipre = 1;
	460	if (iphi > 0 && ieta >= 0){
	461	it = iphi+ietageom->GetNPhi() + ipregeom->GetNPhi()*geom->GetNZ();
	462	return it;
	463	}else{
	464	cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Eta number = "
	465	<< ieta << "Phi number = " << iphi << endl ;
	466	return it;
	467	} // end if iphi>0 && ieta>0
814ad4bf	468	}
229f77c4	469	//_______________________________________________________________________________________
89e103bd	470	// void AliEMCALSDigitizer::TestTowerID(void)
	471	// {
	472	// Int_t j;
229f77c4	473
89e103bd	474	// Bool_t preshower = kFALSE;
	475	// for (j = 0 ; j < 10 ; j++){ // loop over hit id
	476	// Int_t i;
	477	// for (i = 0 ; i <= 2 ; i++){ // loop over
	478	// Int_t k = i96144+j*144+1;
	479	// cout << " Hit Index = " << k << " " << j*10 << " TOWERID = " << Layer2TowerID(k, preshower) << endl ;
	480	// }
	481	// }
	482	// }