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fa6e7866 | 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 | /* $Id$ */ | |
17 | ||
18 | // A. De Falco, H. Woehri, INFN Cagliari, July 2006 | |
19 | // This macro reads the generation/reconstruction files in the | |
20 | // input directory (dirname), | |
21 | // builds a tree that contains, for each event, an array of muons and dimuons | |
22 | // (TClonesArrays of AliMUONTrackLight and AliMUONPairLight objects) | |
23 | // and writes the tree in an output file (outFileName) | |
24 | // Note that if the path for the output file is not explicitly specified, | |
25 | // it will be written in the directory containing the generation/reconstruction | |
26 | ||
27 | #include <iostream> | |
28 | #include <TClonesArray.h> | |
29 | #include <TFile.h> | |
30 | #include <TTree.h> | |
31 | #include <TMath.h> | |
32 | #include <TLorentzVector.h> | |
33 | #include <TParticle.h> | |
34 | #include <TSystem.h> | |
35 | #include <AliMUONRecoCheck.h> | |
36 | #include <AliMUONTrack.h> | |
37 | #include <AliMUONTrackParam.h> | |
38 | #include <AliRunLoader.h> | |
39 | #include "AliMUONTrackLight.h" | |
40 | #include "AliMUONPairLight.h" | |
41 | ||
42 | void DecodeRecoCocktail(char* dirname=".", char* outFileName = "MuonLight.root"){ | |
43 | const char *startingDir = gSystem->pwd(); | |
44 | gSystem->cd(dirname); | |
45 | TFile *fout = new TFile(outFileName,"recreate"); | |
46 | ||
47 | AliMUONRecoCheck *rc = new AliMUONRecoCheck("galice.root"); | |
48 | AliRunLoader *runLoader = rc->GetRunLoader(); | |
49 | ||
50 | TClonesArray *muonArray = new TClonesArray("AliMUONTrackLight",10); | |
51 | TClonesArray *dimuonArray = new TClonesArray("AliMUONPairLight",10); | |
52 | TTree *treeOut = new TTree("tree","tree"); | |
53 | ||
54 | fout->cd(); | |
55 | treeOut->Branch("muons",&muonArray); | |
56 | treeOut->Branch("dimuons",&dimuonArray); | |
57 | ||
58 | runLoader->LoadKinematics("READ");; | |
59 | Int_t nev = runLoader->GetNumberOfEvents(); | |
60 | ||
61 | TLorentzVector v; | |
62 | for(Int_t ievent = 0; ievent < nev; ievent++){ // loop over events | |
63 | printf ("Event %d of %d\n",ievent,nev); | |
64 | muonArray->Clear(); // clean muon and dimuon arrays | |
65 | dimuonArray->Clear(); | |
66 | runLoader->GetEvent(ievent); | |
67 | rc->ResetTracks(); | |
68 | rc->MakeTrackRef(); // make reconstructable tracks | |
69 | ||
70 | TClonesArray * trackRecoArray = rc->GetTrackReco(); | |
71 | TClonesArray * trackRefArray = rc->GetMuonTrackRef(); | |
72 | Int_t nTrackReco = trackRecoArray->GetEntriesFast(); | |
73 | Int_t nreftracks = 0; | |
74 | for (Int_t itrRec = 0; itrRec<nTrackReco; itrRec++) { | |
75 | // assign parameters concerning the reconstructed tracks | |
76 | AliMUONTrack *trackReco = (AliMUONTrack *)trackRecoArray->At(itrRec); | |
77 | AliMUONTrackLight *muLight = new AliMUONTrackLight(); | |
78 | AliMUONTrackParam *trPar = trackReco->GetTrackParamAtVertex(); | |
79 | muLight->SetCharge(Int_t(TMath::Sign(1.,trPar->GetInverseBendingMomentum()))); | |
80 | muLight->SetPxPyPz(trPar->Px(),trPar->Py(), trPar->Pz()); | |
81 | muLight->SetTriggered(trackReco->GetMatchTrigger()); | |
82 | Double_t xyz[3] = { trPar->GetNonBendingCoor(), | |
83 | trPar->GetBendingCoor(), | |
84 | trPar->GetZ()}; | |
85 | muLight->SetVertex(xyz); | |
86 | // find the reference track and store further information | |
87 | TParticle *part = muLight->FindRefTrack(trackReco,trackRefArray,runLoader); | |
88 | if (part) { | |
89 | v.SetPxPyPzE(part->Px(), part->Py(), part->Pz(), part->Energy()); | |
90 | muLight->SetPGen(v); | |
91 | muLight->FillMuonHistory(runLoader, part); | |
92 | muLight->PrintInfo("A"); | |
93 | //store the referenced track in the muonArray: | |
94 | TClonesArray &muons = *muonArray; | |
95 | new (muons[nreftracks++]) AliMUONTrackLight(*muLight); | |
96 | } | |
97 | } | |
98 | ||
99 | // now loop over muon pairs to build dimuons | |
100 | Int_t nmuons = muonArray->GetEntriesFast(); | |
101 | Int_t ndimuons = 0; | |
102 | for(Int_t itrRec1 = 0; itrRec1 < nmuons-1; itrRec1++) { | |
103 | AliMUONTrackLight* mu1 = (AliMUONTrackLight*) muonArray->At(itrRec1); | |
104 | for(Int_t itrRec2 = itrRec1+1; itrRec2 < nmuons; itrRec2++){ | |
105 | AliMUONTrackLight* mu2 = (AliMUONTrackLight*) muonArray->At(itrRec2); | |
106 | AliMUONPairLight *dimuLight = new AliMUONPairLight(); | |
107 | dimuLight->SetMuons(*mu1, *mu2); | |
108 | // if(dimuLight->GetCreationProcess() == 2){ | |
109 | // printf ("#dimuon = %d (%d, %d) \n", ndimuons, itrRec1, itrRec2); | |
110 | // dimuLight->PrintInfo("A"); | |
111 | // } | |
112 | //store the referenced track in the dimuonArray: | |
113 | TClonesArray &dimuons = *dimuonArray; | |
114 | new (dimuons[ndimuons++]) AliMUONPairLight(*dimuLight); | |
115 | } | |
116 | } | |
117 | Int_t ndimu2 = dimuonArray->GetEntriesFast(); | |
118 | // printf ("dimuonArray has %d entries\n",ndimu2); | |
119 | // dimuonArray->Dump(); | |
120 | // printf ("filling tree\n"); | |
121 | // // fill the tree | |
122 | treeOut->Fill(); | |
123 | // printf ("done\n"); | |
124 | ||
125 | } | |
126 | fout->cd(); | |
127 | treeOut->Write(); | |
128 | gSystem->cd(startingDir); | |
129 | } |