/* $Id$ */
//_________________________________________________________________________
-//*--
-//*-- Yves Schutz (SUBATECH)
+//--
+//-- Yves Schutz (SUBATECH)
// Reconstruction class. Redesigned from the old AliReconstructionner class and
// derived from STEER/AliReconstructor.
//
+//-- Aleksei Pavlinov : added staf for EMCAL jet trigger 9Apr 25, 2008)
+// : fgDigitsArr should read just once at event
+
// --- ROOT system ---
+#include <TList.h>
+#include <TClonesArray.h>
+#include <TH2.h>
// --- Standard library ---
// --- AliRoot header files ---
#include "AliEMCALReconstructor.h"
-#include "AliESD.h"
-#include "AliRunLoader.h"
+#include "AliCodeTimer.h"
+#include "AliESDEvent.h"
+#include "AliESDCaloCluster.h"
+#include "AliESDCaloCells.h"
+#include "AliESDtrack.h"
#include "AliEMCALLoader.h"
+#include "AliEMCALRawUtils.h"
+#include "AliEMCALDigit.h"
#include "AliEMCALClusterizerv1.h"
#include "AliEMCALRecPoint.h"
#include "AliEMCALPID.h"
+#include "AliEMCALTrigger.h"
#include "AliRawReader.h"
+#include "AliCDBEntry.h"
+#include "AliCDBManager.h"
+#include "AliEMCALGeometry.h"
+#include "AliEMCAL.h"
+#include "AliEMCALHistoUtilities.h"
+#include "AliESDVZERO.h"
+#include "AliRunLoader.h"
+#include "AliRun.h"
-ClassImp(AliEMCALReconstructor)
+ClassImp(AliEMCALReconstructor)
+const AliEMCALRecParam* AliEMCALReconstructor::fgkRecParam = 0; // EMCAL rec. parameters
+AliEMCALRawUtils* AliEMCALReconstructor::fgRawUtils = 0; // EMCAL raw utilities class
+AliEMCALClusterizer* AliEMCALReconstructor::fgClusterizer = 0; // EMCAL clusterizer class
+TClonesArray* AliEMCALReconstructor::fgDigitsArr = 0; // shoud read just once at event
//____________________________________________________________________________
AliEMCALReconstructor::AliEMCALReconstructor()
- : fDebug(kFALSE)
+ : fDebug(kFALSE), fList(0), fGeom(0)
{
// ctor
+
+ fgRawUtils = new AliEMCALRawUtils;
+ fgClusterizer = new AliEMCALClusterizerv1;
+
+ //To make sure we match with the geometry in a simulation file,
+ //let's try to get it first. If not, take the default geometry
+ AliRunLoader *rl = AliRunLoader::GetRunLoader();
+ if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL")) {
+ fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
+ } else {
+ AliInfo(Form("Using default geometry in reconstruction"));
+ fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
+ }
+
+ if(!fGeom) AliFatal(Form("Could not get geometry!"));
+
}
//____________________________________________________________________________
AliEMCALReconstructor::AliEMCALReconstructor(const AliEMCALReconstructor & rec)
: AliReconstructor(rec),
- fDebug(rec.fDebug)
+ fDebug(rec.fDebug),
+ fList(rec.fList),
+ fGeom(rec.fGeom)
{
//copy ctor
}
AliEMCALReconstructor::~AliEMCALReconstructor()
{
// dtor
+ delete fGeom;
+ AliCodeTimer::Instance()->Print();
}
//____________________________________________________________________________
-void AliEMCALReconstructor::Reconstruct(AliRunLoader* runLoader) const
+void AliEMCALReconstructor::Init()
{
- // method called by AliReconstruction;
- // Only the clusterization is performed,; the rest of the reconstruction is done in FillESD because the track
- // segment maker needs access to the AliESD object to retrieve the tracks reconstructed by
- // the global tracking.
-
- TString headerFile(runLoader->GetFileName()) ;
- TString branchName(runLoader->GetEventFolder()->GetName() ) ;
-
- AliEMCALClusterizerv1 clu(headerFile, branchName);
- clu.SetEventRange(0, -1) ; // do all the events
- if ( Debug() )
- clu.ExecuteTask("deb all") ;
- else
- clu.ExecuteTask("pseudo") ;
-
+ // Trigger hists - Oct 24, 2007
+ fList = AliEMCALHistoUtilities::GetTriggersListOfHists(kTRUE);
}
//____________________________________________________________________________
-void AliEMCALReconstructor::Reconstruct(AliRunLoader* runLoader, AliRawReader* rawreader) const
+void AliEMCALReconstructor::Reconstruct(TTree* digitsTree, TTree* clustersTree) const
{
// method called by AliReconstruction;
// Only the clusterization is performed,; the rest of the reconstruction is done in FillESD because the track
// segment maker needs access to the AliESD object to retrieve the tracks reconstructed by
// the global tracking.
- // Here we reconstruct from Raw Data
-
- rawreader->Reset() ;
- TString headerFile(runLoader->GetFileName()) ;
- TString branchName(runLoader->GetEventFolder()->GetName()) ;
+ // Works on the current event.
+
+ AliCodeTimerAuto("")
+
+ ReadDigitsArrayFromTree(digitsTree);
+ fgClusterizer->InitParameters();
+ fgClusterizer->SetOutput(clustersTree);
- AliEMCALClusterizerv1 clu(headerFile, branchName);
- clu.SetEventRange(0, -1) ; // do all the events
- if ( Debug() )
- clu.ExecuteTask("deb pseudo all") ;
- else
- clu.ExecuteTask("pseudo") ;
+ if(fgDigitsArr && fgDigitsArr->GetEntries()) {
+
+ fgClusterizer->SetInput(digitsTree);
+
+ if(Debug())
+ fgClusterizer->Digits2Clusters("deb all") ;
+ else
+ fgClusterizer->Digits2Clusters("");
+
+ fgClusterizer->Clear();
+
+ }
}
//____________________________________________________________________________
-void AliEMCALReconstructor::FillESD(AliRunLoader* runLoader, AliESD* esd) const
+void AliEMCALReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
+
{
- // Called by AliReconstruct after Reconstruct() and global tracking and vertxing
+ // Conversion from raw data to
+ // EMCAL digits.
+ // Works on a single-event basis
- Int_t eventNumber = runLoader->GetEventNumber() ;
+ rawReader->Reset() ;
- TString headerFile(runLoader->GetFileName()) ;
- TString branchName(runLoader->GetEventFolder()->GetName()) ;
- // Creates AliESDCaloCluster from AliEMCALRecPoints
- AliRunLoader *rl = AliRunLoader::GetRunLoader();
- AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));
- rl->LoadRecPoints();
- rl->LoadKinematics(); // To get the primary label
- rl->LoadDigits(); // To get the primary label
- rl->LoadHits(); // To get the primary label
- rl->GetEvent(eventNumber);
- TObjArray *clusters = emcalLoader->RecPoints();
- Int_t nClusters = clusters->GetEntries(), nClustersNew=0;
- Int_t nRP=0, nPC=0; // in input
+ TClonesArray *digitsArr = new TClonesArray("AliEMCALDigit",200);
+ Int_t bufsize = 32000;
+ digitsTree->Branch("EMCAL", &digitsArr, bufsize);
+
+ //must be done here because, in constructor, option is not yet known
+ fgRawUtils->SetOption(GetOption());
+
+ fgRawUtils->SetRawFormatHighLowGainFactor(GetRecParam()->GetHighLowGainFactor());
+ fgRawUtils->SetRawFormatOrder(GetRecParam()->GetOrderParameter());
+ fgRawUtils->SetRawFormatTau(GetRecParam()->GetTau());
+ fgRawUtils->SetNoiseThreshold(GetRecParam()->GetNoiseThreshold());
+ fgRawUtils->SetNPedSamples(GetRecParam()->GetNPedSamples());
+
+ fgRawUtils->Raw2Digits(rawReader,digitsArr);
+
+ digitsTree->Fill();
+ digitsArr->Delete();
+ delete digitsArr;
+
+}
+
+
+//____________________________________________________________________________
+void AliEMCALReconstructor::FillESD(TTree* digitsTree, TTree* clustersTree,
+ AliESDEvent* esd) const
+{
+ // Called by AliReconstruct after Reconstruct() and global tracking and vertexing
+ // and V0
+ // Works on the current event
+ // printf(" ## AliEMCALReconstructor::FillESD() is started ### \n ");
+ //return;
+
+ //######################################################
+ //#########Calculate trigger and set trigger info###########
+ //######################################################
+
+ AliEMCALTrigger tr;
+ // tr.SetPatchSize(1); // create 4x4 patches
+ tr.SetSimulation(kFALSE); // Reconstruction mode
+ tr.SetDigitsList(fgDigitsArr);
+ // Get VZERO total multiplicity for jet trigger simulation
+ // The simulation of jey trigger will be incorrect if no VZERO data
+ // at ESD
+ AliESDVZERO* vZero = esd->GetVZEROData();
+ if(vZero) {
+ tr.SetVZER0Multiplicity(vZero->GetMTotV0A() + vZero->GetMTotV0C());
+ }
+ //
+ tr.Trigger();
+
+ Float_t maxAmp2x2 = tr.Get2x2MaxAmplitude();
+ Float_t maxAmpnxn = tr.GetnxnMaxAmplitude();
+ Float_t ampOutOfPatch2x2 = tr.Get2x2AmpOutOfPatch() ;
+ Float_t ampOutOfPatchnxn = tr.GetnxnAmpOutOfPatch() ;
+
+ Int_t iSM2x2 = tr.Get2x2SuperModule();
+ Int_t iSMnxn = tr.GetnxnSuperModule();
+ Int_t iModulePhi2x2 = tr.Get2x2ModulePhi();
+ Int_t iModulePhinxn = tr.GetnxnModulePhi();
+ Int_t iModuleEta2x2 = tr.Get2x2ModuleEta();
+ Int_t iModuleEtanxn = tr.GetnxnModuleEta();
+
+ AliDebug(2, Form("Trigger 2x2 max amp %f, out amp %f, SM %d, iphi %d ieta %d", maxAmp2x2, ampOutOfPatch2x2, iSM2x2,iModulePhi2x2, iModuleEta2x2));
+ AliDebug(2, Form("Trigger 4x4 max amp %f , out amp %f, SM %d, iphi %d, ieta %d", maxAmpnxn, ampOutOfPatchnxn, iSMnxn,iModulePhinxn, iModuleEtanxn));
+
+ TVector3 pos2x2(-1,-1,-1);
+ TVector3 posnxn(-1,-1,-1);
+
+ Int_t iAbsId2x2 = fGeom->GetAbsCellIdFromCellIndexes( iSM2x2, iModulePhi2x2, iModuleEta2x2) ; // should be changed to Module
+ Int_t iAbsIdnxn = fGeom->GetAbsCellIdFromCellIndexes( iSMnxn, iModulePhinxn, iModuleEtanxn) ;
+ fGeom->GetGlobal(iAbsId2x2, pos2x2);
+ fGeom->GetGlobal(iAbsIdnxn, posnxn);
+ //printf(" iAbsId2x2 %i iAbsIdnxn %i \n", iAbsId2x2, iAbsIdnxn);
+
+ TArrayF triggerPosition(6);
+ triggerPosition[0] = pos2x2(0) ;
+ triggerPosition[1] = pos2x2(1) ;
+ triggerPosition[2] = pos2x2(2) ;
+ triggerPosition[3] = posnxn(0) ;
+ triggerPosition[4] = posnxn(1) ;
+ triggerPosition[5] = posnxn(2) ;
+ //printf(" triggerPosition ");
+ //for(int i=0; i<6; i++) printf(" %i %f : ", i, triggerPosition[i]);
+
+ TArrayF triggerAmplitudes(4);
+ triggerAmplitudes[0] = maxAmp2x2 ;
+ triggerAmplitudes[1] = ampOutOfPatch2x2 ;
+ triggerAmplitudes[2] = maxAmpnxn ;
+ triggerAmplitudes[3] = ampOutOfPatchnxn ;
+ //printf("\n triggerAmplitudes ");
+ //for(int i=0; i<4; i++) printf(" %i %f : ", i, triggerAmplitudes[i]);
+ //printf("\n");
+ //tr.Print("");
+ //
+ // Trigger jet staff
+ //
+ if(tr.GetNJetThreshold()>0) {
+ // Jet phi/eta
+ Int_t n0 = triggerPosition.GetSize();
+ const TH2F *hpatch = tr.GetJetMatrixE();
+ triggerPosition.Set(n0 + 2);
+ for(Int_t i=0; i<2; i++) triggerPosition[n0+i] = hpatch->GetMean(i+1);
+ // Add jet ampitudes
+ n0 = triggerAmplitudes.GetSize();
+ triggerAmplitudes.Set(n0 + tr.GetNJetThreshold());
+ Double_t *ampJet = tr.GetL1JetThresholds();
+ for(Int_t i=0; i<tr.GetNJetThreshold(); i++){
+ triggerAmplitudes[n0 + i] = Float_t(ampJet[i]);
+ }
+ }
+ esd->AddEMCALTriggerPosition(triggerPosition);
+ esd->AddEMCALTriggerAmplitudes(triggerAmplitudes);
+ // Fill trigger hists
+ AliEMCALHistoUtilities::FillTriggersListOfHists(fList,&triggerPosition,&triggerAmplitudes);
+
+ //########################################
+ //##############Fill CaloCells###############
+ //########################################
+
+ TClonesArray *digits = new TClonesArray("AliEMCALDigit",1000);
+ TBranch *branchdig = digitsTree->GetBranch("EMCAL");
+ if (!branchdig) {
+ AliError("can't get the branch with the PHOS digits !");
+ return;
+ }
+ branchdig->SetAddress(&digits);
+ digitsTree->GetEvent(0);
+ Int_t nDigits = digits->GetEntries(), idignew = 0 ;
+ AliDebug(1,Form("%d digits",nDigits));
+
+ AliESDCaloCells &emcCells = *(esd->GetEMCALCells());
+ emcCells.CreateContainer(nDigits);
+ emcCells.SetType(AliESDCaloCells::kEMCALCell);
+ for (Int_t idig = 0 ; idig < nDigits ; idig++) {
+ const AliEMCALDigit * dig = (const AliEMCALDigit*)digits->At(idig);
+ if(dig->GetAmp() > 0 ){
+ emcCells.SetCell(idignew,dig->GetId(),dig->GetAmp(), dig->GetTime());
+ idignew++;
+ }
+ }
+ emcCells.SetNumberOfCells(idignew);
+ emcCells.Sort();
+
+ //------------------------------------------------------------
+ //-----------------CLUSTERS-----------------------------
+ //------------------------------------------------------------
+ TObjArray *clusters = new TObjArray(100);
+ TBranch *branch = clustersTree->GetBranch("EMCALECARP");
+ branch->SetAddress(&clusters);
+ clustersTree->GetEvent(0);
+
+ Int_t nClusters = clusters->GetEntries(), nClustersNew=0;
+ AliDebug(1,Form("%d clusters",nClusters));
esd->SetFirstEMCALCluster(esd->GetNumberOfCaloClusters()); // Put after Phos clusters
- // esd->SetNumberOfEMCALClusters(nClusters); // have to be change - Feb 25, 2007; some cluster may be discard
+
+ //######################################################
+ //#######################TRACK MATCHING###############
+ //######################################################
+ //Fill list of integers, each one is index of track to which the cluster belongs.
+
+ // step 1 - initialize array of matched track indexes
+ Int_t *matchedTrack = new Int_t[nClusters];
+ for (Int_t iclus = 0; iclus < nClusters; iclus++)
+ matchedTrack[iclus] = -1; // neg. index --> no matched track
+
+ // step 2, change the flag for all matched clusters found in tracks
+ Int_t iemcalMatch = -1;
+ Int_t endtpc = esd->GetNumberOfTracks();
+ for (Int_t itrack = 0; itrack < endtpc; itrack++) {
+ AliESDtrack * track = esd->GetTrack(itrack) ; // retrieve track
+ iemcalMatch = track->GetEMCALcluster();
+ if(iemcalMatch >= 0) matchedTrack[iemcalMatch] = itrack;
+ }
+
+ //########################################
+ //##############Fill CaloClusters#############
+ //########################################
+ esd->SetNumberOfEMCALClusters(nClusters);
for (Int_t iClust = 0 ; iClust < nClusters ; iClust++) {
- const AliEMCALRecPoint * clust = emcalLoader->RecPoint(iClust);
- if(clust->GetClusterType()== AliESDCaloCluster::kClusterv1) nRP++; else nPC++;
+ const AliEMCALRecPoint * clust = (const AliEMCALRecPoint*)clusters->At(iClust);
+ //if(clust->GetClusterType()== AliESDCaloCluster::kEMCALClusterv1) nRP++; else nPC++;
if (Debug()) clust->Print();
// Get information from EMCAL reconstruction points
Float_t xyz[3];
TVector3 gpos;
clust->GetGlobalPosition(gpos);
- for (Int_t ixyz=0; ixyz<3; ixyz++)
+ for (Int_t ixyz=0; ixyz<3; ixyz++)
xyz[ixyz] = gpos[ixyz];
-
- Int_t digitMult = clust->GetMultiplicity();
- UShort_t *amplList = new UShort_t[digitMult];
- UShort_t *timeList = new UShort_t[digitMult];
- UShort_t *digiList = new UShort_t[digitMult];
- Float_t *amplFloat = clust->GetEnergiesList();
- Float_t *timeFloat = clust->GetTimeList();
- Int_t *digitInts = clust->GetAbsId();
Float_t elipAxis[2];
clust->GetElipsAxis(elipAxis);
+ //Create digits lists
+ Int_t cellMult = clust->GetMultiplicity();
+ //TArrayS digiList(digitMult);
+ Float_t *amplFloat = clust->GetEnergiesList();
+ Int_t *digitInts = clust->GetAbsId();
+ TArrayS absIdList(cellMult);
+ TArrayD fracList(cellMult);
- // Convert Float_t* and Int_t* to UShort_t* to save memory
- // Problem : we should recalculate a cluster characteristics when discard digit(s)
- Int_t newdigitMult = 0;
- for (Int_t iDigit=0; iDigit<digitMult; iDigit++) {
- if(timeFloat[iDigit] < 65536/1e9*100) {
- amplList[newdigitMult] = (UShort_t)(amplFloat[iDigit]*500);
- if(amplList[newdigitMult] > 0) { // accept digit if poztive amplitude
- timeList[newdigitMult] = (UShort_t)(timeFloat[iDigit]*1e9*100); // Time in units of 100 ns = 0.1 ps
- digiList[newdigitMult] = (UShort_t)(digitInts[iDigit]);
- newdigitMult++;
- }
+ Int_t newCellMult = 0;
+ for (Int_t iCell=0; iCell<cellMult; iCell++) {
+ if (amplFloat[iCell] > 0) {
+ absIdList[newCellMult] = (UShort_t)(digitInts[iCell]);
+ //Uncomment when unfolding is done
+ //if(emcCells.GetCellAmplitude(digitInts[iCell])>0)
+ //fracList[newCellMult] = amplFloat[iCell]/(emcCells.GetCellAmplitude(digitInts[iCell])*calibration);//get cell calibration value
+ //else
+ fracList[newCellMult] = 0;
+ newCellMult++;
}
}
- if(newdigitMult > 0) { // accept cluster if it has some digit
+ absIdList.Set(newCellMult);
+ fracList.Set(newCellMult);
+
+ if(newCellMult > 0) { // accept cluster if it has some digit
nClustersNew++;
- if(newdigitMult != digitMult) { // some digits were deleted
- UShort_t *amplListNew = new UShort_t[newdigitMult];
- UShort_t *timeListNew = new UShort_t[newdigitMult];
- UShort_t *digiListNew = new UShort_t[newdigitMult];
- for (Int_t iDigit=0; iDigit<newdigitMult; iDigit++) {
- amplListNew[iDigit] = amplList[iDigit];
- timeListNew[iDigit] = timeList[iDigit];
- digiListNew[iDigit] = digiList[iDigit];
- }
-
- delete [] amplList;
- delete [] timeList;
- delete [] digiList;
-
- amplList = amplListNew;
- timeList = timeListNew;
- digiList = digiListNew;
- }
+ //Primaries
+ Int_t parentMult = 0;
+ Int_t *parentList = clust->GetParents(parentMult);
// fills the ESDCaloCluster
- AliESDCaloCluster * ec = new AliESDCaloCluster() ;
- ec->SetClusterType(clust->GetClusterType());
- ec->SetGlobalPosition(xyz);
- ec->SetClusterEnergy(clust->GetEnergy());
-
- ec->SetNumberOfDigits(newdigitMult);
- ec->SetDigitAmplitude(amplList); //energies
- ec->SetDigitTime(timeList); //times
- ec->SetDigitIndex(digiList); //indices
- if(clust->GetClusterType()== AliESDCaloCluster::kClusterv1){
- ec->SetClusterDisp(clust->GetDispersion());
- ec->SetClusterChi2(-1); //not yet implemented
- ec->SetM02(elipAxis[0]*elipAxis[0]) ;
- ec->SetM20(elipAxis[1]*elipAxis[1]) ;
- ec->SetM11(-1) ; //not yet implemented
- ec->SetPrimaryIndex(clust->GetPrimaryIndex());
- }
- // add the cluster to the esd object
+ AliESDCaloCluster * ec = new AliESDCaloCluster() ;
+ ec->SetClusterType(AliESDCaloCluster::kEMCALClusterv1);
+ ec->SetPosition(xyz);
+ ec->SetE(clust->GetEnergy());
+ ec->SetNCells(newCellMult);
+ //Change type of list from short to ushort
+ UShort_t *newAbsIdList = new UShort_t[newCellMult];
+ Double_t *newFracList = new Double_t[newCellMult];
+ for(Int_t i = 0; i < newCellMult ; i++) {
+ newAbsIdList[i]=absIdList[i];
+ newFracList[i]=fracList[i];
+ }
+ ec->SetCellsAbsId(newAbsIdList);
+ ec->SetCellsAmplitudeFraction(newFracList);
+ ec->SetClusterDisp(clust->GetDispersion());
+ ec->SetClusterChi2(-1); //not yet implemented
+ ec->SetM02(elipAxis[0]*elipAxis[0]) ;
+ ec->SetM20(elipAxis[1]*elipAxis[1]) ;
+ ec->SetTOF(clust->GetTime()) ; //time-of-fligh
+ ec->SetNExMax(clust->GetNExMax()); //number of local maxima
+ TArrayI arrayTrackMatched(1);// Only one track, temporal solution.
+ arrayTrackMatched[0]= matchedTrack[iClust];
+ ec->AddTracksMatched(arrayTrackMatched);
+
+ TArrayI arrayParents(parentMult,parentList);
+ ec->AddLabels(arrayParents);
+
+ // add the cluster to the esd object
esd->AddCaloCluster(ec);
delete ec;
- } else { // no new ESD cluster
- delete [] amplList;
- delete [] timeList;
- delete [] digiList;
- }
- } // cycle on clusters
- // printf(" %i : nClusters %i : RP %i PC %i \n", eventNumber, nClusters, nRP, nPC);
- esd->SetNumberOfEMCALClusters(nClustersNew);
- if(nClustersNew != nClusters)
- printf(" ##### nClusters %i -> new %i ##### \n", nClusters, nClustersNew );
+ delete [] newAbsIdList ;
+ delete [] newFracList ;
+ }
+ } // cycle on clusters
+
+ delete [] matchedTrack;
- //Fill ESDCaloCluster with PID weights
+ esd->SetNumberOfEMCALClusters(nClustersNew);
+ //if(nClustersNew != nClusters)
+ //printf(" ##### nClusters %i -> new %i ##### \n", nClusters, nClustersNew );
+
+ //Fill ESDCaloCluster with PID weights
AliEMCALPID *pid = new AliEMCALPID;
//pid->SetPrintInfo(kTRUE);
pid->SetReconstructor(kTRUE);
pid->RunPID(esd);
+ delete pid;
+
+ delete digits;
+ delete clusters;
+
+ // printf(" ## AliEMCALReconstructor::FillESD() is ended : ncl %i -> %i ### \n ",nClusters, nClustersNew);
+}
+
+//__________________________________________________________________________
+void AliEMCALReconstructor::ReadDigitsArrayFromTree(TTree *digitsTree) const
+{
+ // See AliEMCALClusterizer::SetInput(TTree *digitsTree);
+ if(fgDigitsArr) {
+ // Clear previous digits
+ fgDigitsArr->Delete();
+ delete fgDigitsArr;
+ }
+ // Read the digits from the input tree
+ TBranch *branch = digitsTree->GetBranch("EMCAL");
+ if (!branch) {
+ AliError("can't get the branch with the EMCAL digits !");
+ return;
+ }
+ fgDigitsArr = new TClonesArray("AliEMCALDigit",100);
+ branch->SetAddress(&fgDigitsArr);
+ branch->GetEntry(0);
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff