[u/mrichter/AliRoot.git] / PHOS / AliPHOSSDigitizer.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
// The name of the TTask is also the title of the branch that will contain 
// the created SDigits
// The title of the TTAsk is the name of the file that contains the hits from
// which the SDigits are created
// A Summable Digits is the sum of all hits originating 
// from one primary in one active cell
// A threshold for assignment of the primary to SDigit is applied 
// SDigits are written to TreeS, branch "PHOS"
// AliPHOSSDigitizer with all current parameters is written 
// to TreeS branch "AliPHOSSDigitizer".
// 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] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("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("Pedestal 0.001")
//             // and write them into the new branch
// root [4] s->ExecuteTask("deb all tim")
//             // available parameters:
//             deb - print # of produced SDigitis
//             deb all  - print # and list of produced SDigits
//             tim - print benchmarking information
//
//*-- Author :  Dmitri Peressounko (SUBATECH & KI) 
//////////////////////////////////////////////////////////////////////////////


// --- ROOT system ---
#include "TFile.h"
#include "TTask.h"
#include "TTree.h"
#include "TSystem.h"
#include "TROOT.h"
#include "TFolder.h"
#include "TBenchmark.h"
#include "TGeometry.h"

// --- Standard library ---
#include <iomanip.h>

// --- AliRoot header files ---
#include "AliRun.h"
#include "AliHeader.h"
#include "AliPHOSDigit.h"
#include "AliPHOSGeometry.h"
#include "AliPHOSGetter.h"
#include "AliPHOSHit.h"
#include "AliPHOSSDigitizer.h"


ClassImp(AliPHOSSDigitizer)

           
//____________________________________________________________________________ 
  AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","") 
{
  // ctor
  fA             = 0;
  fB             = 10000000.;
  fPrimThreshold = 0.01 ;
  fSDigitsInRun  = 0 ; 
  fSplitFile     = 0 ; 
}

//____________________________________________________________________________ 
AliPHOSSDigitizer::AliPHOSSDigitizer(const char * headerFile, const char * sDigitsTitle):TTask(sDigitsTitle, headerFile)
{
  // ctor
  fA             = 0;
  fB             = 10000000.;
  fPrimThreshold = 0.01 ;
  fSDigitsInRun  = 0 ;
  fSplitFile     = 0 ; 
  Init();
}

//____________________________________________________________________________ 
AliPHOSSDigitizer::~AliPHOSSDigitizer()
{
  if (fSplitFile) 
    if ( fSplitFile->IsOpen() ) 
      fSplitFile->Close() ; 
  AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; 
  gime->CloseFile() ; 
}

//____________________________________________________________________________ 
void AliPHOSSDigitizer::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 AliPHOSGetter
  
  if( strcmp(GetTitle(), "") == 0 )
    SetTitle("galice.root") ;

  AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;     
  if ( gime == 0 ) {
    cerr << "ERROR: AliPHOSSDigitizer::Init -> Could not obtain the Getter object !" << endl ; 
    return ;
  } 
  
  gime->PostSDigits( GetName(), GetTitle() ) ; 

  TString sdname(GetName() );
  sdname.Append(":") ;
  sdname.Append(GetTitle() ) ;
  SetName(sdname) ;
  gime->PostSDigitizer(this) ;
}

//____________________________________________________________________________
void AliPHOSSDigitizer::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("PHOSSDigitizer");

  //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 phosfound = kFALSE, sdigitizerfound = kFALSE ; 
    
    while ( (branch = (static_cast<TBranch*>(next()))) && (!phosfound || !sdigitizerfound) ) {
      TString thisName( GetName() ) ; 
      TString branchName( branch->GetTitle() ) ; 
      branchName.Append(":") ; 
      if ( (strcmp(branch->GetName(), "PHOS")==0) && thisName.BeginsWith(branchName) )  
	phosfound = kTRUE ;
      else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) &&  thisName.BeginsWith(branchName) )
	sdigitizerfound = kTRUE ; 
    }
    
    if ( phosfound || sdigitizerfound ) {
      cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName() 
	   << " already exits" << endl ;
      return ; 
    }   
  }  

  AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; 

  Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ; 
  
  Int_t ievent ;
  for(ievent = 0; ievent < nevents; ievent++){
    gime->Event(ievent,"H") ;
    const TClonesArray * hits = gime->Hits() ;
    TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
    sdigits->Clear();
    Int_t nSdigits = 0 ;
    
    
    //Now make SDigits from hits, for PHOS it is the same, so just copy    

    Int_t Nprim =  (Int_t)  (gAlice->TreeH())->GetEntries(); 
    // Attention Nprim is the number of primaries tracked by Geant and this number could be different to the number of Primaries in TreeK;
    Int_t iprim;
    for (iprim=0; iprim<Nprim; iprim++) { 
      //=========== Get the PHOS branch from Hits Tree for the Primary iprim
      gime->Track(iprim) ;
      Int_t i;
      for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
	AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
	// Assign primary number only if contribution is significant
	
	if( hit->GetEnergy() > fPrimThreshold)
	  new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
						  Digitize(hit->GetEnergy()), hit->GetTime()) ;
	else
	  new((*sdigits)[nSdigits]) AliPHOSDigit( -1              , hit->GetId(), 
						   Digitize(hit->GetEnergy()), hit->GetTime()) ;
	nSdigits++ ;	
	
      }

    } // loop over iprim
    
    sdigits->Sort() ;
    
    nSdigits = sdigits->GetEntriesFast() ;
    fSDigitsInRun += nSdigits ;  
    sdigits->Expand(nSdigits) ;

    Int_t i ;
    for (i = 0 ; i < nSdigits ; i++) { 
      AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ; 
      digit->SetIndexInList(i) ;     
    }

    if(gAlice->TreeS() == 0)
      gAlice->MakeTree("S", fSplitFile);
    
    //First list of sdigits
    Int_t bufferSize = 32000 ;    
    TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
    sdigitsBranch->SetTitle(sdname);
      
    //Next - SDigitizer
    Int_t splitlevel = 0 ;
    AliPHOSSDigitizer * sd = this ;
    TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
					       &sd,bufferSize,splitlevel); 
    sdigitizerBranch->SetTitle(sdname);
  
    sdigitsBranch->Fill() ; 
    sdigitizerBranch->Fill() ;
    gAlice->TreeS()->AutoSave() ;
    
    if(strstr(option,"deb"))
      PrintSDigits(option) ;
  
  }

  if (fSplitFile) 
    if ( fSplitFile->IsOpen() ) 
      fSplitFile->Close() ; 
  

  if(strstr(option,"tim")){
    gBenchmark->Stop("PHOSSDigitizer");
    cout << "AliPHOSSDigitizer:" << endl ;
    cout << "   took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing " 
	 <<  gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
    cout << endl ;
  }
  
  
}

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

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

//__________________________________________________________________
void AliPHOSSDigitizer::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() ; 
  if ( !fSplitFile->Get("gAlice") ) 
    gAlice->Write();
  
  TTree *treeE  = gAlice->TreeE();
  if (!treeE) {
    cerr << "ERROR: AliPHOSSDigitizer::SetSPlitFile -> No TreeE found "<<endl;
    abort() ;
  }      
  
  // copy TreeE
  if ( !fSplitFile->Get("TreeE") ) {
    AliHeader *header = new AliHeader();
    treeE->SetBranchAddress("Header", &header);
    treeE->SetBranchStatus("*",1);
    TTree *treeENew =  treeE->CloneTree();
    treeENew->Write();
  }

  // copy AliceGeom
  if ( !fSplitFile->Get("AliceGeom") ) {
    TGeometry *AliceGeom = static_cast<TGeometry*>(cwd->Get("AliceGeom"));
    if (!AliceGeom) {
      cerr << "ERROR: AliPHOSSDigitizer::SetSPlitFile -> AliceGeom was not found in the input file "<<endl;
      abort() ;
    }
    AliceGeom->Write();
  }

  gAlice->MakeTree("S",fSplitFile);
  cwd->cd() ; 
}

//__________________________________________________________________
void AliPHOSSDigitizer::Print(Option_t* option)const
{
  // Prints parameters of SDigitizer
  cout << "------------------- "<< GetName() << " -------------" << endl ;
  cout << "   Writing SDigits to branch with title  " << GetName() << endl ;
  cout << "   with digitization parameters  A = " << fA << endl ;
  cout << "                                 B = " << fB << endl ;
  cout << "   Threshold for Primary assignment= " << fPrimThreshold << endl ; 
  cout << "---------------------------------------------------"<<endl ;
  
}
//__________________________________________________________________
Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
{
  // Equal operator.
  // SDititizers are equal if their pedestal, slope and threshold are equal

  if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
    return kTRUE ;
  else
    return kFALSE ;
}
//__________________________________________________________________
//__________________________________________________________________
void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
{
  // Prints list of digits produced in the current pass of AliPHOSDigitizer


  AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; 
  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;
  const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ; 

  cout << "AliPHOSSDigitiser: 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
    AliPHOSDigit * digit;
    cout << "EMC sdigits " << endl ;
    cout << "Digit Id    Amplitude     Index     Nprim  Primaries list " <<  endl;      
    Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
    Int_t index ;
    for (index = 0 ; (index < sdigits->GetEntriesFast()) && 
	 (((AliPHOSDigit * )  sdigits->At(index))->GetId() <= maxEmc) ; index++) {
      digit = (AliPHOSDigit * )  sdigits->At(index) ;
      if(digit->GetNprimary() == 0) continue;
      cout << setw(6)  <<  digit->GetId() << "   "  << 	setw(10)  <<  digit->GetAmp() <<   "    "  
	   << setw(6)  <<  digit->GetIndexInList() << "    "   
	   << setw(5)  <<  digit->GetNprimary() <<"    ";
      
      Int_t iprimary;
      for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	cout << setw(5)  <<  digit->GetPrimary(iprimary+1) << "    ";
      cout << endl;  	 
    }    
    cout << endl;
  }

  if(strstr(option,"all")||strstr(option,"CPV")){
    
    //loop over CPV digits
    AliPHOSDigit * digit;
    cout << "CPV sdigits " << endl ;
    cout << "Digit Id    Amplitude     Index     Nprim  Primaries list " <<  endl;      
    Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
    Int_t index ;
    for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
      digit = (AliPHOSDigit * )  sdigits->At(index) ;
      if(digit->GetId() > maxEmc){
	cout << setw(6)  <<  digit->GetId() << "   "  << 	setw(10)  <<  digit->GetAmp() <<   "    "  
	     << setw(6)  <<  digit->GetIndexInList() << "    "   
	     << setw(5)  <<  digit->GetNprimary() <<"    ";
	
	Int_t iprimary;
	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	  cout << setw(5)  <<  digit->GetPrimary(iprimary+1) << "    ";
	cout << endl;  	 
      }    
    }
  }

}

//____________________________________________________________________________ 
void AliPHOSSDigitizer::UseHitsFrom(const char * filename)
{
  SetTitle(filename) ; 
  Init() ; 
}
Commit	Line	Data
	1	/**************************************************************************
	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
	17	/* $Id$ */
	18
	19	//_________________________________________________________________________
	20	// This is a TTask that makes SDigits out of Hits
	21	// The name of the TTask is also the title of the branch that will contain
	22	// the created SDigits
	23	// The title of the TTAsk is the name of the file that contains the hits from
	24	// which the SDigits are created
	25	// A Summable Digits is the sum of all hits originating
	26	// from one primary in one active cell
	27	// A threshold for assignment of the primary to SDigit is applied
	28	// SDigits are written to TreeS, branch "PHOS"
	29	// AliPHOSSDigitizer with all current parameters is written
	30	// to TreeS branch "AliPHOSSDigitizer".
	31	// Both branches have the same title. If necessary one can produce
	32	// another set of SDigits with different parameters. Two versions
	33	// can be distunguished using titles of the branches.
	34	// User case:
	35	// root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
	36	// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
	37	// root [1] s->ExecuteTask()
	38	// // Makes SDigitis for all events stored in galice.root
	39	// root [2] s->SetPedestalParameter(0.001)
	40	// // One can change parameters of digitization
	41	// root [3] s->SetSDigitsBranch("Pedestal 0.001")
	42	// // and write them into the new branch
	43	// root [4] s->ExecuteTask("deb all tim")
	44	// // available parameters:
	45	// deb - print # of produced SDigitis
	46	// deb all - print # and list of produced SDigits
	47	// tim - print benchmarking information
	48	//
	49	//*-- Author : Dmitri Peressounko (SUBATECH & KI)
	50	//////////////////////////////////////////////////////////////////////////////
	51
	52
	53	// --- ROOT system ---
	54	#include "TFile.h"
	55	#include "TTask.h"
	56	#include "TTree.h"
	57	#include "TSystem.h"
	58	#include "TROOT.h"
	59	#include "TFolder.h"
	60	#include "TBenchmark.h"
	61	#include "TGeometry.h"
	62
	63	// --- Standard library ---
	64	#include <iomanip.h>
	65
	66	// --- AliRoot header files ---
	67	#include "AliRun.h"
	68	#include "AliHeader.h"
	69	#include "AliPHOSDigit.h"
	70	#include "AliPHOSGeometry.h"
	71	#include "AliPHOSGetter.h"
	72	#include "AliPHOSHit.h"
	73	#include "AliPHOSSDigitizer.h"
	74
	75
	76	ClassImp(AliPHOSSDigitizer)
	77
	78
	79	//____________________________________________________________________________
	80	AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","")
	81	{
	82	// ctor
	83	fA = 0;
	84	fB = 10000000.;
	85	fPrimThreshold = 0.01 ;
	86	fSDigitsInRun = 0 ;
	87	fSplitFile = 0 ;
	88	}
	89
	90	//____________________________________________________________________________
	91	AliPHOSSDigitizer::AliPHOSSDigitizer(const char * headerFile, const char * sDigitsTitle):TTask(sDigitsTitle, headerFile)
	92	{
	93	// ctor
	94	fA = 0;
	95	fB = 10000000.;
	96	fPrimThreshold = 0.01 ;
	97	fSDigitsInRun = 0 ;
	98	fSplitFile = 0 ;
	99	Init();
	100	}
	101
	102	//____________________________________________________________________________
	103	AliPHOSSDigitizer::~AliPHOSSDigitizer()
	104	{
	105	if (fSplitFile)
	106	if ( fSplitFile->IsOpen() )
	107	fSplitFile->Close() ;
	108	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
	109	gime->CloseFile() ;
	110	}
	111
	112	//____________________________________________________________________________
	113	void AliPHOSSDigitizer::Init()
	114	{
	115	// Initialization: open root-file, allocate arrays for hits and sdigits,
	116	// attach task SDigitizer to the list of PHOS tasks
	117	//
	118	// Initialization can not be done in the default constructor
	119	//============================================================= YS
	120	// The initialisation is now done by AliPHOSGetter
	121
	122	if( strcmp(GetTitle(), "") == 0 )
	123	SetTitle("galice.root") ;
	124
	125	AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;
	126	if ( gime == 0 ) {
	127	cerr << "ERROR: AliPHOSSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
	128	return ;
	129	}
	130
	131	gime->PostSDigits( GetName(), GetTitle() ) ;
	132
	133	TString sdname(GetName() );
	134	sdname.Append(":") ;
	135	sdname.Append(GetTitle() ) ;
	136	SetName(sdname) ;
	137	gime->PostSDigitizer(this) ;
	138	}
	139
	140	//____________________________________________________________________________
	141	void AliPHOSSDigitizer::Exec(Option_t *option)
	142	{
	143	// Collects all hits in the same active volume into digit
	144	if( strcmp(GetName(), "") == 0 )
	145	Init() ;
	146
	147	if (strstr(option, "print") ) {
	148	Print("") ;
	149	return ;
	150	}
	151
	152	if(strstr(option,"tim"))
	153	gBenchmark->Start("PHOSSDigitizer");
	154
	155	//Check, if this branch already exits
	156	gAlice->GetEvent(0) ;
	157
	158	TString sdname(GetName()) ;
	159	sdname.Remove(sdname.Index(GetTitle())-1) ;
	160
	161	if(gAlice->TreeS() ) {
	162	TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
	163	TIter next(lob) ;
	164	TBranch * branch = 0 ;
	165	Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
	166
	167	while ( (branch = (static_cast<TBranch*>(next()))) && (!phosfound \|\| !sdigitizerfound) ) {
	168	TString thisName( GetName() ) ;
	169	TString branchName( branch->GetTitle() ) ;
	170	branchName.Append(":") ;
	171	if ( (strcmp(branch->GetName(), "PHOS")==0) && thisName.BeginsWith(branchName) )
	172	phosfound = kTRUE ;
	173	else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && thisName.BeginsWith(branchName) )
	174	sdigitizerfound = kTRUE ;
	175	}
	176
	177	if ( phosfound \|\| sdigitizerfound ) {
	178	cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
	179	<< " already exits" << endl ;
	180	return ;
	181	}
	182	}
	183
	184	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
	185
	186	Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
	187
	188	Int_t ievent ;
	189	for(ievent = 0; ievent < nevents; ievent++){
	190	gime->Event(ievent,"H") ;
	191	const TClonesArray * hits = gime->Hits() ;
	192	TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
	193	sdigits->Clear();
	194	Int_t nSdigits = 0 ;
	195
	196
	197	//Now make SDigits from hits, for PHOS it is the same, so just copy
	198
	199	Int_t Nprim = (Int_t) (gAlice->TreeH())->GetEntries();
	200	// Attention Nprim is the number of primaries tracked by Geant and this number could be different to the number of Primaries in TreeK;
	201	Int_t iprim;
	202	for (iprim=0; iprim<Nprim; iprim++) {
	203	//=========== Get the PHOS branch from Hits Tree for the Primary iprim
	204	gime->Track(iprim) ;
	205	Int_t i;
	206	for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
	207	AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
	208	// Assign primary number only if contribution is significant
	209
	210	if( hit->GetEnergy() > fPrimThreshold)
	211	new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
	212	Digitize(hit->GetEnergy()), hit->GetTime()) ;
	213	else
	214	new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
	215	Digitize(hit->GetEnergy()), hit->GetTime()) ;
	216	nSdigits++ ;
	217
	218	}
	219
	220	} // loop over iprim
	221
	222	sdigits->Sort() ;
	223
	224	nSdigits = sdigits->GetEntriesFast() ;
	225	fSDigitsInRun += nSdigits ;
	226	sdigits->Expand(nSdigits) ;
	227
	228	Int_t i ;
	229	for (i = 0 ; i < nSdigits ; i++) {
	230	AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
	231	digit->SetIndexInList(i) ;
	232	}
	233
	234	if(gAlice->TreeS() == 0)
	235	gAlice->MakeTree("S", fSplitFile);
	236
	237	//First list of sdigits
	238	Int_t bufferSize = 32000 ;
	239	TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
	240	sdigitsBranch->SetTitle(sdname);
	241
	242	//Next - SDigitizer
	243	Int_t splitlevel = 0 ;
	244	AliPHOSSDigitizer * sd = this ;
	245	TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
	246	&sd,bufferSize,splitlevel);
	247	sdigitizerBranch->SetTitle(sdname);
	248
	249	sdigitsBranch->Fill() ;
	250	sdigitizerBranch->Fill() ;
	251	gAlice->TreeS()->AutoSave() ;
	252
	253	if(strstr(option,"deb"))
	254	PrintSDigits(option) ;
	255
	256	}
	257
	258	if (fSplitFile)
	259	if ( fSplitFile->IsOpen() )
	260	fSplitFile->Close() ;
	261
	262
	263	if(strstr(option,"tim")){
	264	gBenchmark->Stop("PHOSSDigitizer");
	265	cout << "AliPHOSSDigitizer:" << endl ;
	266	cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
	267	<< gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
	268	cout << endl ;
	269	}
	270
	271
	272	}
	273
	274	//__________________________________________________________________
	275	void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
	276	{
	277	// Setting title to branch SDigits
	278
	279	TString stitle(title) ;
	280
	281	// check if branch with title already exists
	282	TBranch * sdigitsBranch =
	283	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS")) ;
	284	TBranch * sdigitizerBranch =
	285	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer")) ;
	286	const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
	287	const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
	288	if ( stitle.CompareTo(sdigitsTitle)==0 \|\| stitle.CompareTo(sdigitizerTitle)==0 ){
	289	cerr << "ERROR: AliPHOSSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
	290	return ;
	291	}
	292
	293	cout << "AliPHOSSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
	294
	295	SetName(title) ;
	296
	297	// Post to the WhiteBoard
	298	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
	299	gime->PostSDigits( title, GetTitle()) ;
	300	}
	301
	302	//__________________________________________________________________
	303	void AliPHOSSDigitizer::SetSplitFile(const TString splitFileName)
	304	{
	305	// Diverts the SDigits in a file separate from the hits file
	306
	307	TDirectory * cwd = gDirectory ;
	308
	309	if ( !(gAlice->GetTreeSFileName() == splitFileName) ) {
	310	if (gAlice->GetTreeSFile() )
	311	gAlice->GetTreeSFile()->Close() ;
	312	}
	313
	314	fSplitFile = gAlice->InitTreeFile("S",splitFileName.Data());
	315	fSplitFile->cd() ;
	316	if ( !fSplitFile->Get("gAlice") )
	317	gAlice->Write();
	318
	319	TTree *treeE = gAlice->TreeE();
	320	if (!treeE) {
	321	cerr << "ERROR: AliPHOSSDigitizer::SetSPlitFile -> No TreeE found "<<endl;
	322	abort() ;
	323	}
	324
	325	// copy TreeE
	326	if ( !fSplitFile->Get("TreeE") ) {
	327	AliHeader *header = new AliHeader();
	328	treeE->SetBranchAddress("Header", &header);
	329	treeE->SetBranchStatus("*",1);
	330	TTree *treeENew = treeE->CloneTree();
	331	treeENew->Write();
	332	}
	333
	334	// copy AliceGeom
	335	if ( !fSplitFile->Get("AliceGeom") ) {
	336	TGeometry AliceGeom = static_cast<TGeometry>(cwd->Get("AliceGeom"));
	337	if (!AliceGeom) {
	338	cerr << "ERROR: AliPHOSSDigitizer::SetSPlitFile -> AliceGeom was not found in the input file "<<endl;
	339	abort() ;
	340	}
	341	AliceGeom->Write();
	342	}
	343
	344	gAlice->MakeTree("S",fSplitFile);
	345	cwd->cd() ;
	346	}
	347
	348	//__________________________________________________________________
	349	void AliPHOSSDigitizer::Print(Option_t* option)const
	350	{
	351	// Prints parameters of SDigitizer
	352	cout << "------------------- "<< GetName() << " -------------" << endl ;
	353	cout << " Writing SDigits to branch with title " << GetName() << endl ;
	354	cout << " with digitization parameters A = " << fA << endl ;
	355	cout << " B = " << fB << endl ;
	356	cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
	357	cout << "---------------------------------------------------"<<endl ;
	358
	359	}
	360	//__________________________________________________________________
	361	Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
	362	{
	363	// Equal operator.
	364	// SDititizers are equal if their pedestal, slope and threshold are equal
	365
	366	if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
	367	return kTRUE ;
	368	else
	369	return kFALSE ;
	370	}
	371	//__________________________________________________________________
	372	//__________________________________________________________________
	373	void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
	374	{
	375	// Prints list of digits produced in the current pass of AliPHOSDigitizer
	376
	377
	378	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
	379	TString sdname(GetName()) ;
	380	sdname.Remove(sdname.Index(GetTitle())-1) ;
	381	const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
	382
	383	cout << "AliPHOSSDigitiser: event " << gAlice->GetEvNumber() << endl ;
	384	cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
	385	cout << endl ;
	386	if(strstr(option,"all")\|\|strstr(option,"EMC")){
	387
	388	//loop over digits
	389	AliPHOSDigit * digit;
	390	cout << "EMC sdigits " << endl ;
	391	cout << "Digit Id Amplitude Index Nprim Primaries list " << endl;
	392	Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
	393	Int_t index ;
	394	for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
	395	(((AliPHOSDigit * ) sdigits->At(index))->GetId() <= maxEmc) ; index++) {
	396	digit = (AliPHOSDigit * ) sdigits->At(index) ;
	397	if(digit->GetNprimary() == 0) continue;
	398	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " "
	399	<< setw(6) << digit->GetIndexInList() << " "
	400	<< setw(5) << digit->GetNprimary() <<" ";
	401
	402	Int_t iprimary;
	403	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	404	cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
	405	cout << endl;
	406	}
	407	cout << endl;
	408	}
	409
	410	if(strstr(option,"all")\|\|strstr(option,"CPV")){
	411
	412	//loop over CPV digits
	413	AliPHOSDigit * digit;
	414	cout << "CPV sdigits " << endl ;
	415	cout << "Digit Id Amplitude Index Nprim Primaries list " << endl;
	416	Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
	417	Int_t index ;
	418	for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
	419	digit = (AliPHOSDigit * ) sdigits->At(index) ;
	420	if(digit->GetId() > maxEmc){
	421	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " "
	422	<< setw(6) << digit->GetIndexInList() << " "
	423	<< setw(5) << digit->GetNprimary() <<" ";
	424
	425	Int_t iprimary;
	426	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	427	cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
	428	cout << endl;
	429	}
	430	}
	431	}
	432
	433	}
	434
	435	//____________________________________________________________________________
	436	void AliPHOSSDigitizer::UseHitsFrom(const char * filename)
	437	{
	438	SetTitle(filename) ;
	439	Init() ;
	440	}