Fixing an error in the computation of the efficiency of a whole chamber (Matthieu)
[u/mrichter/AliRoot.git] / PWG3 / muondep / AliAnalysisTaskESDMCLabelAddition.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
4  * Author: The ALICE Off-line Project.                                    *
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14  **************************************************************************/
15
16 #include <TChain.h>
17 #include <TFile.h>
18 #include <TParticle.h>
19
20 #include "AliAnalysisTaskESDMCLabelAddition.h"
21 #include "AliAnalysisManager.h"
22 #include "AliESDEvent.h"
23 #include "AliAODEvent.h"
24 #include "AliESDInputHandler.h"
25 #include "AliAODHandler.h"
26 #include "AliAnalysisFilter.h"
27 #include "AliESDtrack.h"
28 #include "AliESDMuonTrack.h"
29 #include "AliESDMuonCluster.h"
30 #include "AliESDVertex.h"
31 #include "AliMultiplicity.h"
32 #include "AliLog.h"
33 #include "AliStack.h"
34 #include "AliMCEvent.h"
35 #include "AliMCEventHandler.h"
36 #include "AliAODMCParticle.h"
37
38 #include "AliMUONRecoCheck.h"
39 #include "AliMUONESDInterface.h"
40 #include "AliMUONTrack.h"
41 #include "AliMUONTrackParam.h"
42 #include "AliMUONVTrackStore.h"
43 #include "AliMUONVCluster.h"
44 #include "AliMUONVClusterStore.h"
45
46 ClassImp(AliAnalysisTaskESDMCLabelAddition)
47
48 // sigma cut applied to match a reconstructed cluster with a trackref
49 const Double_t AliAnalysisTaskESDMCLabelAddition::fgkSigmaCut = 10.;
50
51 //----------------------------------------------------------------------
52 AliAnalysisTaskESDMCLabelAddition::AliAnalysisTaskESDMCLabelAddition():
53   AliAnalysisTaskSE()
54 {
55   // Default constructor
56 }
57
58
59 //----------------------------------------------------------------------
60 AliAnalysisTaskESDMCLabelAddition::AliAnalysisTaskESDMCLabelAddition(const char* name):
61   AliAnalysisTaskSE(name)
62 {
63   // Constructor
64 }
65
66
67 //----------------------------------------------------------------------
68 void AliAnalysisTaskESDMCLabelAddition::UserCreateOutputObjects()
69 {
70 }
71
72
73 //----------------------------------------------------------------------
74 void AliAnalysisTaskESDMCLabelAddition::Init()
75 {
76   AliDebug(2, "Init()");
77 }
78
79
80 //----------------------------------------------------------------------
81 void AliAnalysisTaskESDMCLabelAddition::UserExec(Option_t */*option*/)
82 {
83   // Execute analysis for current event                                     
84   Long64_t ientry = Entry();
85   AliDebug(1, Form("MCLabel Addition: Analysing event # %5d\n",(Int_t) ientry)); 
86   AddMCLabel();
87 }
88
89
90 //----------------------------------------------------------------------
91 void AliAnalysisTaskESDMCLabelAddition::AddMCLabel() 
92 {
93   // Load ESD event
94   AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
95   
96   // Load MC event 
97   AliMCEventHandler *mcH = 0;
98   if(MCEvent()) mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); 
99   
100   // Get reference tracks
101   AliMUONRecoCheck rc(esd,mcH);
102   AliMUONVTrackStore* trackRefStore = rc.TrackRefs(-1);
103   
104   // Loop over reconstructed tracks
105   AliESDMuonTrack *esdTrack = 0x0;
106   Int_t nMuTracks = esd->GetNumberOfMuonTracks();
107   for (Int_t nMuTrack = 0; nMuTrack < nMuTracks; ++nMuTrack) {
108     
109     esdTrack = esd->GetMuonTrack(nMuTrack);
110     
111     // skip ghosts
112     if (!esdTrack->ContainTrackerData()) continue;
113     
114     // convert ESD track to MUON track (without recomputing track parameters at each clusters)
115     AliMUONTrack muonTrack;
116     AliMUONESDInterface::ESDToMUON(*esdTrack, muonTrack, kFALSE);
117     
118     // try to match the reconstructed track with a simulated one
119     Int_t nMatchClusters = 0;
120     AliMUONTrack* matchedTrackRef = rc.FindCompatibleTrack(muonTrack, *trackRefStore, nMatchClusters, kFALSE, fgkSigmaCut);
121     
122     // set the MC label
123     if (matchedTrackRef) esdTrack->SetLabel(matchedTrackRef->GetUniqueID());
124     else esdTrack->SetLabel(-1);
125     
126   }
127   
128 }
129
130
131 //----------------------------------------------------------------------
132 void AliAnalysisTaskESDMCLabelAddition::Terminate(Option_t */*option*/)
133 {
134   // Terminate analysis
135   //
136   AliDebug(2, "Terminate()");
137 }
138