PWGGA/EMCALTasks/AliEmcalPicoTrackMaker.cxx

   1 // $Id$
   2 //
   3 // Class to make PicoTracks in AOD/ESD events.
   4 //
   5 // Author: S.Aiola, C.Loizides
   6
   7 #include <TClonesArray.h>
   8 #include "AliAODEvent.h"
   9 #include "AliAODTrack.h"
  10 #include "AliAnalysisManager.h"
  11 #include "AliESDtrack.h"
  12 #include "AliESDtrackCuts.h"
  13 #include "AliLog.h"
  14 #include "AliPicoTrack.h"
  15 #include "AliVTrack.h"
  16 #include "AliEmcalPicoTrackMaker.h"
  17
  18 ClassImp(AliEmcalPicoTrackMaker)
  19
  20 //________________________________________________________________________
  21 AliEmcalPicoTrackMaker::AliEmcalPicoTrackMaker() :
  22   AliAnalysisTaskSE("AliEmcalPicoTrackMaker"),
  23   fESDtrackCuts(0),
  24   fTracksOutName("PicoTracks"),
  25   fTracksInName("tracks"),
  26   fMaxTrackPt(100),
  27   fTracksIn(0),
  28   fTracksOut(0)
  29 {
  30   // Constructor.
  31
  32   fAODfilterBits[0] = 0;
  33   fAODfilterBits[1] = 0;
  34 }
  35
  36 //________________________________________________________________________
  37 AliEmcalPicoTrackMaker::AliEmcalPicoTrackMaker(const char *name) :
  38   AliAnalysisTaskSE(name),
  39   fESDtrackCuts(0),
  40   fTracksOutName("PicoTracks"),
  41   fTracksInName("tracks"),
  42   fMaxTrackPt(100),
  43   fTracksIn(0),
  44   fTracksOut(0)
  45 {
  46   // Constructor.
  47
  48   fAODfilterBits[0] = 0;
  49   fAODfilterBits[1] = 0;
  50   fBranchNames = "ESD:AliESDHeader.,AliESDRun.,SPDVertex.,Tracks";
  51 }
  52
  53 //________________________________________________________________________
  54 AliEmcalPicoTrackMaker::~AliEmcalPicoTrackMaker()
  55 {
  56   // Destructor.
  57 }
  58
  59 //________________________________________________________________________
  60 void AliEmcalPicoTrackMaker::UserCreateOutputObjects()
  61 {
  62   // Create my user objects.
  63
  64   fTracksOut = new TClonesArray("AliPicoTrack");
  65   fTracksOut->SetName(fTracksOutName);
  66 }
  67
  68 //________________________________________________________________________
  69 void AliEmcalPicoTrackMaker::UserExec(Option_t *)
  70 {
  71   // Main loop, called for each event.
  72
  73   AliAnalysisManager *am = AliAnalysisManager::GetAnalysisManager();
  74   if (!am) {
  75     AliError("Manager zero, returning");
  76     return;
  77   }
  78
  79   // retrieve tracks from input.
  80   fTracksIn = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(fTracksInName));
  81   if (!fTracksIn) {
  82     AliError(Form("Could not retrieve tracks %s!", fTracksInName.Data()));
  83     return;
  84   }
  85
  86   // add tracks to event if not yet there
  87   if (!(InputEvent()->FindListObject(fTracksOutName))) {
  88     InputEvent()->AddObject(fTracksOut);
  89   }
  90
  91   // clear container (normally a null operation as the event should clean it already)
  92   fTracksOut->Clear();
  93
  94   // test if we are in ESD or AOD mode
  95   Bool_t esdMode = kTRUE;
  96   if (dynamic_cast<AliAODEvent*>(InputEvent())!=0)
  97     esdMode = kFALSE;
  98
  99   // loop over tracks
 100   const Int_t Ntracks = fTracksIn->GetEntriesFast();
 101   for (Int_t iTracks = 0, nacc = 0; iTracks < Ntracks; ++iTracks) {
 102
 103     AliVTrack *track = dynamic_cast<AliVTrack*>(fTracksIn->At(iTracks));
 104
 105     if (!track)
 106       continue;
 107
 108     if (track->Pt() > fMaxTrackPt)
 109       continue;
 110     Bool_t isEmc = kFALSE;
 111     Int_t label = -1;
 112     if (esdMode) {
 113       if (fESDtrackCuts) {
 114         AliESDtrack *esdtrack = static_cast<AliESDtrack*>(track);
 115         if (!fESDtrackCuts->AcceptTrack(esdtrack))
 116           continue;
 117       }
 118       label = track->GetLabel();
 119       isEmc = track->IsEMCAL();
 120     } else {
 121       AliAODTrack *aodtrack = static_cast<AliAODTrack*>(track);
 122       if (aodtrack->TestFilterBit(fAODfilterBits[0]))
 123         label = 0;
 124       else if (aodtrack->TestFilterBit(fAODfilterBits[1]))
 125         label = 3;
 126       else /*not a good track*/
 127         continue;
 128
 129       if (TMath::Abs(track->GetTrackEtaOnEMCal()) < 0.75 &&
 130           track->GetTrackPhiOnEMCal() > 70 * TMath::DegToRad() &&
 131           track->GetTrackPhiOnEMCal() < 190 * TMath::DegToRad())
 132         isEmc = kTRUE;
 133     }
 134
 135
 136     /*AliPicoTrack *picotrack =*/ new ((*fTracksOut)[nacc]) AliPicoTrack(track->Pt(),
 137                                                                      track->Eta(),
 138                                                                      track->Phi(),
 139                                                                      track->Charge(),
 140                                                                      label,
 141                                                                      track->GetTrackEtaOnEMCal(),
 142                                                                      track->GetTrackPhiOnEMCal(),
 143                                                                      isEmc);
 144     ++nacc;
 145   }
 146 }