[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 "TGeometry.h"
#include "TBenchmark.h"
// --- Standard library ---
#include <iomanip.h>

// --- AliRoot header files ---
#include "AliRun.h"
#include "AliHeader.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
  InitParameters() ; 
  fDefaultInit = kTRUE ; 
}

//____________________________________________________________________________ 
AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
{
  // ctor
  InitParameters() ; 
  Init();
  fDefaultInit = kFALSE ; 
}

//____________________________________________________________________________ 
AliEMCALSDigitizer::~AliEMCALSDigitizer()
{
  // dtor
  // fDefaultInit = kTRUE if SDigitizer created by default ctor (to get just the parameters)
  
  if (!fDefaultInit) {
    AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ; 
    
    // remove the task from the folder list
    gime->RemoveTask("S",GetName()) ;
    
    TString name(GetName()) ; 
    if (! name.IsNull() ) 
      if (name.Index(":") > 0)  
	name.Remove(name.Index(":")) ; 
    
    // remove the Hits from the folder list
    gime->RemoveObjects("H",name) ;
    
    // remove the SDigits from the folder list
    gime->RemoveObjects("S", name) ;
    
    // Close the root file
    gime->CloseFile() ; 
    
  }
  fSplitFile = 0 ; 
}

//____________________________________________________________________________ 
void AliEMCALSDigitizer::Init(){

  // Initialization: open root-file, allocate arrays for hits and sdigits,
  // attach task SDigitizer to the list of EMCAL 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::InitParameters(){
  fA = 0;
  fB = 10000000.;
  fTowerPrimThreshold = 0.01 ;
  fPreShowerPrimThreshold = 0.0001 ; 
  fNevents = 0 ; 
  fPhotonElectronFactor = 5000. ; // photoelectrons per GeV 
  fSplitFile = 0 ; 

}

//____________________________________________________________________________
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) ) {
      TString thisName( GetName() ) ; 
      TString branchName( branch->GetTitle() ) ; 
      branchName.Append(":") ; 
      if ( (strcmp(branch->GetName(), "EMCAL")==0) && thisName.BeginsWith(branchName) )  
	emcalfound = kTRUE ;
      
      else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && thisName.BeginsWith(branchName) )  
	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() ;
      if (nSdigits > 0) { 
	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",fSplitFile);

      //First list of sdigits
      Int_t bufferSize = 32000 ;    
      TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
      sdigitsBranch->SetTitle(sdname);
      
      //second - SDigitizer
      Int_t splitlevel = 0 ;
      AliEMCALSDigitizer * sd = this ;
      TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
							   &sd,bufferSize,splitlevel); 
      sdigitizerBranch->SetTitle(sdname);
      
      sdigitsBranch->Fill() ; 
      sdigitizerBranch->Fill() ; 
      gAlice->TreeS()->AutoSave() ;
           
      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::SetSplitFile(const TString splitFileName) 
{
  // Diverts the SDigits in a file separate from the hits file
  
  TDirectory * cwd = gDirectory ;

  if ( !(gAlice->GetTreeSFileName() == splitFileName) ) {
    if (gAlice->GetTreeSFile() )  
      gAlice->GetTreeSFile()->Close() ; 
  }

  fSplitFile = gAlice->InitTreeFile("S",splitFileName.Data());
  fSplitFile->cd() ; 
  gAlice->Write(0, TObject::kOverwrite);
 
  TTree *treeE  = gAlice->TreeE();
  if (!treeE) {
    cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> No TreeE found "<<endl;
   abort() ;
  }      
  
  // copy TreeE
  
  AliHeader *header = new AliHeader();
  treeE->SetBranchAddress("Header", &header);
  treeE->SetBranchStatus("*",1);
  TTree *treeENew =  treeE->CloneTree();
  treeENew->Write(0, TObject::kOverwrite);
  
  // copy AliceGeom
  TGeometry *AliceGeom = static_cast<TGeometry*>(cwd->Get("AliceGeom"));
  if (!AliceGeom) {
    cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> AliceGeom was not found in the input file "<<endl;
    abort() ;
  }
  AliceGeom->Write(0, TObject::kOverwrite) ;
  
  gAlice->MakeTree("S",fSplitFile);
  cwd->cd() ; 
  cout << "INFO: AliEMCALSDigitizer::SetSPlitFile -> SDigits will be stored in " << splitFileName.Data() << endl ; 
}

//__________________________________________________________________
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"
106fc2fa	56	#include "TGeometry.h"
61e0abb5	57	#include "TBenchmark.h"
	58	// --- Standard library ---
	59	#include <iomanip.h>
	60
	61	// --- AliRoot header files ---
	62	#include "AliRun.h"
106fc2fa	63	#include "AliHeader.h"
61e0abb5	64	#include "AliEMCALDigit.h"
	65	#include "AliEMCALHit.h"
	66	#include "AliEMCALSDigitizer.h"
	67	#include "AliEMCALGeometry.h"
	68	#include "AliEMCALv1.h"
814ad4bf	69	#include "AliEMCALGetter.h"
61e0abb5	70
	71	ClassImp(AliEMCALSDigitizer)
	72
	73
	74	//____________________________________________________________________________
	75	AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("AliEMCALSDigitizer","")
	76	{
	77	// ctor
839828a6	78	InitParameters() ;
92f521a9	79	fDefaultInit = kTRUE ;
61e0abb5	80	}
	81
	82	//____________________________________________________________________________
814ad4bf	83	AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
61e0abb5	84	{
61e0abb5	85	// ctor
839828a6	86	InitParameters() ;
814ad4bf	87	Init();
92f521a9	88	fDefaultInit = kFALSE ;
61e0abb5	89	}
	90
	91	//____________________________________________________________________________
	92	AliEMCALSDigitizer::~AliEMCALSDigitizer()
	93	{
	94	// dtor
92f521a9	95	// fDefaultInit = kTRUE if SDigitizer created by default ctor (to get just the parameters)
	96
	97	if (!fDefaultInit) {
	98	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	99
839828a6	100	// remove the task from the folder list
	101	gime->RemoveTask("S",GetName()) ;
	102
	103	TString name(GetName()) ;
	104	if (! name.IsNull() )
	105	if (name.Index(":") > 0)
	106	name.Remove(name.Index(":")) ;
	107
	108	// remove the Hits from the folder list
	109	gime->RemoveObjects("H",name) ;
	110
	111	// remove the SDigits from the folder list
	112	gime->RemoveObjects("S", name) ;
	113
	114	// Close the root file
	115	gime->CloseFile() ;
	116
	117	}
	118	fSplitFile = 0 ;
61e0abb5	119	}
36657114	120
61e0abb5	121	//____________________________________________________________________________
61e0abb5	122	void AliEMCALSDigitizer::Init(){
61e0abb5	123
814ad4bf	124	// Initialization: open root-file, allocate arrays for hits and sdigits,
36657114	125	// attach task SDigitizer to the list of EMCAL tasks
814ad4bf	126	//
	127	// Initialization can not be done in the default constructor
	128	//============================================================= YS
	129	// The initialisation is now done by the getter
61e0abb5	130
36657114	131	if( strcmp(GetTitle(), "") == 0 )
814ad4bf	132	SetTitle("galice.root") ;
36657114	133
814ad4bf	134	AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;
	135	if ( gime == 0 ) {
	136	cerr << "ERROR: AliEMCALSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
	137	return ;
	138	}
	139
	140	gime->PostSDigits( GetName(), GetTitle() ) ;
61e0abb5	141
814ad4bf	142	TString sdname(GetName() );
	143	sdname.Append(":") ;
	144	sdname.Append(GetTitle() ) ;
97f3344e	145	SetName(sdname.Data()) ;
814ad4bf	146	gime->PostSDigitizer(this) ;
814ad4bf	147
814ad4bf	148
839828a6	149	}
	150
	151	//____________________________________________________________________________
	152	void AliEMCALSDigitizer::InitParameters(){
	153	fA = 0;
	154	fB = 10000000.;
	155	fTowerPrimThreshold = 0.01 ;
	156	fPreShowerPrimThreshold = 0.0001 ;
	157	fNevents = 0 ;
	158	fPhotonElectronFactor = 5000. ; // photoelectrons per GeV
	159	fSplitFile = 0 ;
	160
	161	}
	162
61e0abb5	163	//____________________________________________________________________________
61e0abb5	164	void AliEMCALSDigitizer::Exec(Option_t *option) {
61e0abb5	165
814ad4bf	166	// Collects all hits in the same active volume into digit
	167
	168	if( strcmp(GetName(), "") == 0 )
	169	Init() ;
61e0abb5	170
814ad4bf	171	if (strstr(option, "print") ) {
	172	Print("") ;
	173	return ;
	174	}
61e0abb5	175
814ad4bf	176	if(strstr(option,"tim"))
814ad4bf	177	gBenchmark->Start("EMCALSDigitizer");
97f3344e	178
97f3344e	179
814ad4bf	180	//Check, if this branch already exits
814ad4bf	181	gAlice->GetEvent(0) ;
97f3344e	182
	183	TString sdname(GetName()) ;
	184	sdname.Remove(sdname.Index(GetTitle())-1) ;
	185
814ad4bf	186	if(gAlice->TreeS() ) {
	187	TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
	188	TIter next(lob) ;
	189	TBranch * branch = 0 ;
	190	Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ;
61e0abb5	191
97f3344e	192	while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound \|\| !sdigitizerfound) ) {
36657114	193	TString thisName( GetName() ) ;
	194	TString branchName( branch->GetTitle() ) ;
	195	branchName.Append(":") ;
	196	if ( (strcmp(branch->GetName(), "EMCAL")==0) && thisName.BeginsWith(branchName) )
814ad4bf	197	emcalfound = kTRUE ;
814ad4bf	198
36657114	199	else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && thisName.BeginsWith(branchName) )
814ad4bf	200	sdigitizerfound = kTRUE ;
61e0abb5	201	}
61e0abb5	202
814ad4bf	203	if ( emcalfound \|\| sdigitizerfound ) {
	204	cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
	205	<< " already exits" << endl ;
	206	return ;
	207	}
	208	}
97f3344e	209
814ad4bf	210	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
814ad4bf	211	Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
	212
	213	Int_t ievent ;
	214	for(ievent = 0; ievent < nevents; ievent++){
	215	gime->Event(ievent,"H") ;
	216	const TClonesArray * fHits = gime->Hits() ;
	217	TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
	218	sdigits->Clear();
61e0abb5	219	Int_t nSdigits = 0 ;
814ad4bf	220
	221	//Collects all hits in the same active volume into digit
	222
	223
61e0abb5	224
	225
	226	//Now made SDigits from hits, for EMCAL it is the same, so just copy
814ad4bf	227	// Int_t itrack ;
	228	// for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
	229	//gime->Track(itrack);
61e0abb5	230	//=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
89e103bd	231
61e0abb5	232	Int_t i;
e1f60236	233	for ( i = 0 ; i < fHits->GetEntries() ; i++ ) { // loop over all hits (hit = deposited energy/layer/entering particle)
	234	AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(fHits->At(i)) ;
	235	AliEMCALDigit * curSDigit = 0 ;
	236	AliEMCALDigit * sdigit = 0 ;
ffa6d63b	237	Bool_t newsdigit = kTRUE;
e1f60236	238
89e103bd	239
89e103bd	240
e1f60236	241	// Assign primary number only if deposited energy is significant
e1f60236	242
89e103bd	243	if( (!hit->IsInPreShower() && hit->GetEnergy() > fTowerPrimThreshold) \|\|
	244	(hit->IsInPreShower() && hit->GetEnergy() > fPreShowerPrimThreshold)) {
	245	curSDigit = new AliEMCALDigit( hit->GetPrimary(),
e1f60236	246	hit->GetIparent(),Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
89e103bd	247	Digitize(hit->GetEnergy()),
814ad4bf	248	hit->GetTime()) ;
89e103bd	249	} else {
814ad4bf	250	curSDigit = new AliEMCALDigit( -1 ,
814ad4bf	251	-1 ,
e1f60236	252	Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
89e103bd	253	Digitize(hit->GetEnergy()),
e1f60236	254	hit->GetTime() ) ;
89e103bd	255	}
e1f60236	256	Int_t check = 0 ;
e1f60236	257	for(check= 0; check < nSdigits ; check++) {
814ad4bf	258	sdigit = (AliEMCALDigit *)sdigits->At(check);
e1f60236	259	if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same tower or the same preshower ?
	260	sdigit = sdigit + *curSDigit;
	261
	262	newsdigit = kFALSE;
	263	}
814ad4bf	264	}
e1f60236	265	if (newsdigit) {
e1f60236	266	new((sdigits)[nSdigits]) AliEMCALDigit(curSDigit);
ffa6d63b	267	nSdigits++ ;
e1f60236	268	}
e1f60236	269	} // loop over all hits (hit = deposited energy/layer/entering particle)
814ad4bf	270	// } // loop over tracks
e1f60236	271
814ad4bf	272	sdigits->Sort() ;
61e0abb5	273
814ad4bf	274	nSdigits = sdigits->GetEntriesFast() ;
106fc2fa	275	if (nSdigits > 0) {
	276	sdigits->Expand(nSdigits) ;
	277
	278	// Int_t i ;
	279	const AliEMCALGeometry * geom = gime->EMCALGeometry() ;
	280
	281	Int_t lastPreShowerIndex = nSdigits - 1 ;
	282	if (!(dynamic_cast<AliEMCALDigit *>(sdigits->At(lastPreShowerIndex))->IsInPreShower()))
	283	lastPreShowerIndex = -2;
	284	Int_t firstPreShowerIndex = 100000 ;
	285	Int_t index ;
	286	AliEMCALDigit * sdigit = 0 ;
	287	for ( index = 0; index < nSdigits ; index++) {
	288	sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) ) ;
	289	if (sdigit->IsInPreShower() ){
	290	firstPreShowerIndex = index ;
	291	break ;
	292	}
	293	}
	294
	295	AliEMCALDigit * preshower ;
	296	AliEMCALDigit * tower ;
	297	Int_t lastIndex = lastPreShowerIndex +1 ;
	298
	299
	300	for (index = firstPreShowerIndex ; index <= lastPreShowerIndex; index++) {
	301	preshower = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) );
	302	Bool_t towerFound = kFALSE ;
	303	Int_t jndex ;
	304	for (jndex = 0; jndex < firstPreShowerIndex; jndex++) {
	305	tower = dynamic_cast<AliEMCALDigit *>(sdigits->At(jndex) );
	306	if ( (preshower->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) == tower->GetId() ) {
	307	Float_t towerEnergy = static_cast<Float_t>(tower->GetAmp()) ;
	308	Float_t preshoEnergy = static_cast<Float_t>(preshower->GetAmp()) ;
	309	towerEnergy +=preshoEnergy ;
	310	tower = tower + *preshower ; // and add preshower multiplied by layer ratio to tower
	311	tower->SetAmp(static_cast<Int_t>(TMath::Ceil(towerEnergy))) ;
	312	towerFound = kTRUE ;
	313	}
	314	}
	315	if ( !towerFound ) {
	316
	317	new((sdigits)[lastIndex]) AliEMCALDigit(preshower);
	318	AliEMCALDigit * temp = dynamic_cast<AliEMCALDigit *>(sdigits->At(lastIndex)) ;
	319	temp->SetId(temp->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) ;
	320	lastIndex++ ;
	321	}
	322	}
	323
	324	sdigits->Sort() ;
	325	Int_t NPrimarymax = -1 ;
	326	for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
	327	sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
	328	sdigit->SetIndexInList(i) ;
	329	}
	330
	331	for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
	332	if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > NPrimarymax)
	333	NPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
e1f60236	334	}
e1f60236	335	}
106fc2fa	336	if(gAlice->TreeS() == 0)
36657114	337	gAlice->MakeTree("S",fSplitFile);
36657114	338
814ad4bf	339	//First list of sdigits
	340	Int_t bufferSize = 32000 ;
	341	TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
	342	sdigitsBranch->SetTitle(sdname);
814ad4bf	343
814ad4bf	344	//second - SDigitizer
	345	Int_t splitlevel = 0 ;
	346	AliEMCALSDigitizer * sd = this ;
	347	TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
	348	&sd,bufferSize,splitlevel);
	349	sdigitizerBranch->SetTitle(sdname);
814ad4bf	350
36657114	351	sdigitsBranch->Fill() ;
36657114	352	sdigitizerBranch->Fill() ;
106fc2fa	353	gAlice->TreeS()->AutoSave() ;
36657114	354
814ad4bf	355	if(strstr(option,"deb"))
	356	PrintSDigits(option) ;
	357
61e0abb5	358	}
	359
	360	if(strstr(option,"tim")){
	361	gBenchmark->Stop("EMCALSDigitizer");
	362	cout << "AliEMCALSDigitizer:" << endl ;
	363	cout << " took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing "
	364	<< gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
	365	cout << endl ;
	366	}
	367
	368
	369	}
	370	//__________________________________________________________________
	371	void AliEMCALSDigitizer::SetSDigitsBranch(const char * title ){
814ad4bf	372
	373	// Setting title to branch SDigits
	374
	375	TString stitle(title) ;
	376
	377	// check if branch with title already exists
	378	TBranch * sdigitsBranch =
	379	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("EMCAL")) ;
	380	TBranch * sdigitizerBranch =
	381	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
	382	const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
	383	const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
	384	if ( stitle.CompareTo(sdigitsTitle)==0 \|\| stitle.CompareTo(sdigitizerTitle)==0 ){
	385	cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
	386	return ;
	387	}
	388
	389	cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
	390
	391	SetName(title) ;
	392
	393	// Post to the WhiteBoard
	394	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	395	gime->PostSDigits( title, GetTitle()) ;
	396
	397
61e0abb5	398	}
106fc2fa	399
106fc2fa	400	//__________________________________________________________________
36657114	401	void AliEMCALSDigitizer::SetSplitFile(const TString splitFileName)
106fc2fa	402	{
	403	// Diverts the SDigits in a file separate from the hits file
	404
	405	TDirectory * cwd = gDirectory ;
36657114	406
	407	if ( !(gAlice->GetTreeSFileName() == splitFileName) ) {
	408	if (gAlice->GetTreeSFile() )
	409	gAlice->GetTreeSFile()->Close() ;
	410	}
	411
	412	fSplitFile = gAlice->InitTreeFile("S",splitFileName.Data());
	413	fSplitFile->cd() ;
839828a6	414	gAlice->Write(0, TObject::kOverwrite);
839828a6	415
106fc2fa	416	TTree *treeE = gAlice->TreeE();
106fc2fa	417	if (!treeE) {
36657114	418	cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> No TreeE found "<<endl;
36657114	419	abort() ;
106fc2fa	420	}
	421
	422	// copy TreeE
839828a6	423
	424	AliHeader *header = new AliHeader();
	425	treeE->SetBranchAddress("Header", &header);
	426	treeE->SetBranchStatus("*",1);
	427	TTree *treeENew = treeE->CloneTree();
	428	treeENew->Write(0, TObject::kOverwrite);
106fc2fa	429
106fc2fa	430	// copy AliceGeom
839828a6	431	TGeometry AliceGeom = static_cast<TGeometry>(cwd->Get("AliceGeom"));
	432	if (!AliceGeom) {
	433	cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> AliceGeom was not found in the input file "<<endl;
	434	abort() ;
106fc2fa	435	}
839828a6	436	AliceGeom->Write(0, TObject::kOverwrite) ;
36657114	437
36657114	438	gAlice->MakeTree("S",fSplitFile);
106fc2fa	439	cwd->cd() ;
36657114	440	cout << "INFO: AliEMCALSDigitizer::SetSPlitFile -> SDigits will be stored in " << splitFileName.Data() << endl ;
106fc2fa	441	}
106fc2fa	442
61e0abb5	443	//__________________________________________________________________
	444	void AliEMCALSDigitizer::Print(Option_t* option)const{
	445	cout << "------------------- "<< GetName() << " -------------" << endl ;
814ad4bf	446	cout << " Writing SDigitis to branch with title " << GetName() << endl ;
89e103bd	447	cout << " with digitization parameters A = " << fA << endl ;
	448	cout << " B = " << fB << endl ;
	449	cout << " Threshold for Primary assignment in Tower = " << fTowerPrimThreshold << endl ;
	450	cout << " Threshold for Primary assignment in PreShower = " << fPreShowerPrimThreshold << endl ;
61e0abb5	451	cout << "---------------------------------------------------"<<endl ;
	452
	453	}
	454	//__________________________________________________________________
	455	Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
89e103bd	456	if( (fA==sd.fA)&&(fB==sd.fB)&&
	457	(fTowerPrimThreshold==sd.fTowerPrimThreshold) &&
	458	(fPreShowerPrimThreshold==sd.fPreShowerPrimThreshold))
61e0abb5	459	return kTRUE ;
	460	else
	461	return kFALSE ;
	462	}
	463	//__________________________________________________________________
	464	void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
	465	//Prints list of digits produced at the current pass of AliEMCALDigitizer
	466
814ad4bf	467	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	468	TString sdname(GetName()) ;
	469	sdname.Remove(sdname.Index(GetTitle())-1) ;
	470	const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
61e0abb5	471
814ad4bf	472	cout << "AliEMCALSDigitiser: event " << gAlice->GetEvNumber() << endl ;
	473	cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
	474	cout << endl ;
	475	if(strstr(option,"all")\|\|strstr(option,"EMC")){
	476
61e0abb5	477	//loop over digits
61e0abb5	478	AliEMCALDigit * digit;
e1f60236	479	cout << "SDigit Id " << " Amplitude " << " Time " << " Index " << " Nprim " << " Primaries list " << endl;
61e0abb5	480	Int_t index ;
814ad4bf	481	for (index = 0 ; index < sdigits->GetEntries() ; index++) {
	482	digit = (AliEMCALDigit * ) sdigits->At(index) ;
	483	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " " << digit->GetTime()
	484	<< setw(6) << digit->GetIndexInList() << " "
	485	<< setw(5) << digit->GetNprimary() <<" ";
61e0abb5	486
	487	Int_t iprimary;
	488	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
814ad4bf	489	cout << " " << digit->GetPrimary(iprimary+1) << " ";
61e0abb5	490	cout << endl;
61e0abb5	491	}
814ad4bf	492	cout <<endl;
61e0abb5	493	}
61e0abb5	494	}
814ad4bf	495	//________________________________________________________________________
229f77c4	496	Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t ihit, Bool_t preshower){
	497	// Method to Transform from Hit Id to Digit Id
	498	// This function should be one to one
814ad4bf	499	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
814ad4bf	500	const AliEMCALGeometry * geom = gime->EMCALGeometry();
f063936c	501	Int_t ieta = ((ihit-1)/geom->GetNPhi())%geom->GetNZ(); // eta Tower Index
229f77c4	502	Int_t iphi = (ihit-1)%(geom->GetNPhi())+1; //phi Tower Index
	503	Int_t it = -10;
	504	Int_t ipre = 0;
814ad4bf	505
229f77c4	506	if (preshower)ipre = 1;
	507	if (iphi > 0 && ieta >= 0){
	508	it = iphi+ietageom->GetNPhi() + ipregeom->GetNPhi()*geom->GetNZ();
	509	return it;
	510	}else{
	511	cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Eta number = "
	512	<< ieta << "Phi number = " << iphi << endl ;
	513	return it;
	514	} // end if iphi>0 && ieta>0
814ad4bf	515	}
229f77c4	516	//_______________________________________________________________________________________
89e103bd	517	// void AliEMCALSDigitizer::TestTowerID(void)
	518	// {
	519	// Int_t j;
229f77c4	520
89e103bd	521	// Bool_t preshower = kFALSE;
	522	// for (j = 0 ; j < 10 ; j++){ // loop over hit id
	523	// Int_t i;
	524	// for (i = 0 ; i <= 2 ; i++){ // loop over
	525	// Int_t k = i96144+j*144+1;
	526	// cout << " Hit Index = " << k << " " << j*10 << " TOWERID = " << Layer2TowerID(k, preshower) << endl ;
	527	// }
	528	// }
	529	// }