X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=EMCAL%2FAliEMCALReconstructor.cxx;h=1b8829e2b8b81cf73b50d8a65ae2e5e7e6b2eaf9;hb=d5e397eb04ae42ac082c8666156e5c92f1470a7c;hp=117b4a015f33acfa9f457491a8c36e4f3224a5e6;hpb=d948db41da2bb4a34858ee81bfc446c557d993a1;p=u%2Fmrichter%2FAliRoot.git diff --git a/EMCAL/AliEMCALReconstructor.cxx b/EMCAL/AliEMCALReconstructor.cxx index 117b4a015f3..1b8829e2b8b 100644 --- a/EMCAL/AliEMCALReconstructor.cxx +++ b/EMCAL/AliEMCALReconstructor.cxx @@ -16,206 +16,479 @@ /* $Id$ */ //_________________________________________________________________________ -//*-- -//*-- 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 +#include +#include +#include "TGeoManager.h" +#include "TGeoMatrix.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 "AliCDBManager.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),fCalibData(0) { // ctor -} -//____________________________________________________________________________ -AliEMCALReconstructor::AliEMCALReconstructor(const AliEMCALReconstructor & rec) - : AliReconstructor(rec), - fDebug(rec.fDebug) -{ - //copy ctor -} + fgRawUtils = new AliEMCALRawUtils; + + //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::Instance(); + if (rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL")) { + fGeom = dynamic_cast(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry(); + } else { + AliInfo(Form("Using default geometry in reconstruction")); + fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName()); + } + + //Get calibration parameters + if(!fCalibData) + { + AliCDBEntry *entry = (AliCDBEntry*) + AliCDBManager::Instance()->Get("EMCAL/Calib/Data"); + if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject(); + } + + if(!fCalibData) + AliFatal("Calibration parameters not found in CDB!"); + + //Init the clusterizer with geometry and calibration pointers, avoid doing it twice. + fgClusterizer = new AliEMCALClusterizerv1(fGeom, fCalibData); + + if(!fGeom) AliFatal(Form("Could not get geometry!")); + +} //____________________________________________________________________________ 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. - AliEMCALClusterizerv1 clu(headerFile, branchName); - clu.SetEventRange(0, -1) ; // do all the events - if ( Debug() ) - clu.ExecuteTask("deb pseudo all") ; - else - clu.ExecuteTask("pseudo") ; + AliCodeTimerAuto("",0) + + ReadDigitsArrayFromTree(digitsTree); + fgClusterizer->InitParameters(); + fgClusterizer->SetOutput(clustersTree); + + 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 - - Int_t eventNumber = runLoader->GetEventNumber() ; - - TString headerFile(runLoader->GetFileName()) ; - TString branchName(runLoader->GetEventFolder()->GetName()) ; - // Creates AliESDCaloCluster from AliEMCALRecPoints - AliRunLoader *rl = AliRunLoader::GetRunLoader(); - AliEMCALLoader *emcalLoader = dynamic_cast(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 + // Conversion from raw data to + // EMCAL digits. + // Works on a single-event basis + + rawReader->Reset() ; + + 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; iAddEMCALTriggerPosition(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 EMCAL 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); + Float_t energy = 0; + for (Int_t idig = 0 ; idig < nDigits ; idig++) { + const AliEMCALDigit * dig = (const AliEMCALDigit*)digits->At(idig); + if(dig->GetAmp() > 0 ){ + energy = (static_cast (fgClusterizer))->Calibrate(dig->GetAmp(),dig->GetId()); + emcCells.SetCell(idignew,dig->GetId(),energy, 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 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 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; iDigitGetParents(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); + + //Store EMCAL misalignment matrixes + FillMisalMatrixes(esd) ; + +} + +//================================================================================== +void AliEMCALReconstructor::FillMisalMatrixes(AliESDEvent* esd)const{ + //Store EMCAL matrixes in ESD Header + + //Check, if matrixes was already stored + for(Int_t sm = 0 ; sm < 12; sm++){ + if(esd->GetEMCALMatrix(sm)!=0) + return ; + } + + //Create and store matrixes + if(!gGeoManager){ + AliError("Can not store misal. matrixes: no gGeoManager! \n") ; + return ; + } + //Note, that owner of copied marixes will be header + char path[255] ; + TGeoHMatrix * m ; + for(Int_t sm = 0; sm < 12; sm++){ + sprintf(path,"/ALIC_1/XEN1_1/SMOD_%d",sm+1) ; //In Geometry modules numbered 1,2,.,5 + if(sm >= 10) sprintf(path,"/ALIC_1/XEN1_1/SM10_%d",sm-10+1) ; + + if (gGeoManager->cd(path)){ + m = gGeoManager->GetCurrentMatrix() ; + esd->SetEMCALMatrix(new TGeoHMatrix(*m),sm) ; + } + else{ + esd->SetEMCALMatrix(NULL,sm) ; + } + } + +} + + + +//__________________________________________________________________________ +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); }