Update HFE v2 analyses
[u/mrichter/AliRoot.git] / MUON / DecodeRecoCocktail.C
CommitLineData
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
e54bf126 18/// \ingroup macros
19/// \file DecodeRecoCocktail.C
20/// \brief add brief description
21///
22/// \author A. De Falco, H. Woehri, INFN Cagliari, July 2006
23///
24/// This macro reads the generation/reconstruction files in the
25/// input directories (recodir and simdir),
26/// builds a tree that contains, for each event, an array of muons and dimuons
27/// (TClonesArrays of AliMUONTrackLight and AliMUONPairLight objects)
28/// and writes the tree in an output file (outFileName)
29/// Note that if the path for the output file is not explicitly specified,
30/// it will be written in the directory containing the generation/reconstruction
31/// 27-Nov-2006: modified by in order to loop on files
32///
33/// 13 Nov 2007:
34/// Updated this macro to work with new version of AliMUONRecoCheck. Also, we are
35/// now fetching reconstructed track data from ESD and not the track tree, because
36/// the AliMUONTrack objects for reconstructed tracks are no longer stored on disk.
37/// - Artur Szostak <artursz@iafrica.com>
9bdda5f6 38
4d309390 39#if !defined(__CINT__) || defined(__MAKECINT__)
40#include <Riostream.h>
fa6e7866 41#include <TClonesArray.h>
42#include <TFile.h>
43#include <TTree.h>
44#include <TMath.h>
45#include <TLorentzVector.h>
46#include <TParticle.h>
47#include <TSystem.h>
4d309390 48#include "AliMUONRecoCheck.h"
49#include "AliMUONTrack.h"
fa6e7866 50#include "AliMUONTrackLight.h"
51#include "AliMUONPairLight.h"
9bdda5f6 52#include "AliMUONVTrackStore.h"
9bdda5f6 53#include "AliESDEvent.h"
54#include "AliESDVertex.h"
f202486b 55#include "AliESDMuonTrack.h"
9bdda5f6 56#include "AliMCEventHandler.h"
57#include "AliMCEvent.h"
a99c3449 58#include "AliStack.h"
9bdda5f6 59/*TODO: need to update this with changes made to ITS
4d309390 60#include "AliITSVertexerPPZ.h"
61#include "AliITSLoader.h"
9bdda5f6 62*/
4d309390 63#endif
fa6e7866 64
4d309390 65
9bdda5f6 66void DecodeRecoCocktail(
67 char* recodir=".", // The directory containing galice.root for reconstructed data.
68 char* simdir="generated/", // The directory containing galice.root for simulated data.
f202486b 69 char* outFileName = "MuonLight.root" // The output filename containing AliMUONTrackLight and AliMUONPairLight objects.
9bdda5f6 70 )
71{
e54bf126 72/// \param recodir The directory containing galice.root for reconstructed data.
73/// \param simdir The directory containing galice.root for simulated data.
74/// \param outFileName The output filename containing AliMUONTrackLight and AliMUONPairLight objects.
e54bf126 75
4d309390 76 char startingDir[200];
77 sprintf (startingDir,"%s",gSystem->pwd());
9bdda5f6 78 gSystem->cd(recodir);
4d309390 79
80 TClonesArray *muonArray = new TClonesArray("AliMUONTrackLight",10);
81 TClonesArray *dimuonArray = new TClonesArray("AliMUONPairLight",10);
82 TTree *treeOut = new TTree("tree","tree");
83
fa6e7866 84 TFile *fout = new TFile(outFileName,"recreate");
4d309390 85 fout->cd();
fa6e7866 86
4d309390 87 treeOut->Branch("muons",&muonArray);
88 treeOut->Branch("dimuons",&dimuonArray);
89
61fed964 90 AliMUONRecoCheck *rc = new AliMUONRecoCheck("AliESDs.root", simdir);
fa6e7866 91
9bdda5f6 92 /*TODO: need to update this with changes made to ITS
a4ee7ab9 93 AliITSLoader* ITSloader = (AliITSLoader*) runLoaderSim->GetLoader("ITSLoader");
4d309390 94 AliITSVertexerPPZ *dovert = 0;
95 if (ITSloader) {
96 dovert = new AliITSVertexerPPZ("default",0,0);
21939432 97 // dovert->SetDebug(0);
4d309390 98 dovert->SetDiffPhiMax(0.05);
99 dovert->SetWindow(3.);
100 }
101 AliESDVertex *vert = 0;
9bdda5f6 102 */
fa6e7866 103
104 TLorentzVector v;
9bdda5f6 105
f202486b 106 Int_t nev = rc->NumberOfEvents();
fa6e7866 107 for(Int_t ievent = 0; ievent < nev; ievent++){ // loop over events
9bdda5f6 108
109 /*TODO: need to update this with changes made to ITS
a4ee7ab9 110 runLoaderSim->GetHeader();
4d309390 111 if (ITSloader) {
112 vert = dovert->FindVertexForCurrentEvent(ievent);
113 }
9bdda5f6 114 */
115
a4ee7ab9 116 //printf ("Event %d of %d\n",ievent,nev);
fa6e7866 117 muonArray->Clear(); // clean muon and dimuon arrays
118 dimuonArray->Clear();
fa6e7866 119
a99c3449 120 AliMUONVTrackStore* recoTracks = rc->ReconstructedTracks(ievent, kFALSE); // Use tracks from actual reconstruction.
9bdda5f6 121 //AliMUONVTrackStore* trackRefs = rc->ReconstructibleTracks(ievent); // Only use reconstructible reference tracks.
122 AliMUONVTrackStore* trackRefs = rc->TrackRefs(ievent);
61fed964 123 AliStack* pstack = (const_cast<AliMCEventHandler*>(rc->GetMCEventHandler()))->MCEvent()->Stack();
9bdda5f6 124
f202486b 125 // loop over ESD tracks
9bdda5f6 126 Int_t nreftracks = 0;
f202486b 127 const AliESDEvent* esd = rc->GetESDEvent();
128 Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ;
129 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
130
131 AliESDMuonTrack* esdTrack = esd->GetMuonTrack(iTrack);
132
133 // skip ghosts
134 if (!esdTrack->ContainTrackerData()) continue;
a4ee7ab9 135
f202486b 136 // find the corresponding MUON track
137 AliMUONTrack* trackReco = (AliMUONTrack*) recoTracks->FindObject(esdTrack->GetUniqueID());
4d309390 138
f202486b 139 // try to match the reconstructed track with a simulated one
140 Int_t nMatchClusters = 0;
141 AliMUONTrack* matchedTrackRef = rc->FindCompatibleTrack(*trackReco, *trackRefs, nMatchClusters, kFALSE, 10.);
142
143 if (matchedTrackRef) {
144
145 //store new referenced track in the muonArray
146 AliMUONTrackLight* muLight = new ((*muonArray)[nreftracks++]) AliMUONTrackLight();
147
148 // assign parameters concerning the reconstructed tracks
149 muLight->FillFromESD(esdTrack);
150 // muLight->FillFromAliMUONTrack(trackReco);
151
152 // store further information related to the simulated track
153 muLight->SetTrackPythiaLine(matchedTrackRef->GetUniqueID());
154 TParticle *part = pstack->Particle(matchedTrackRef->GetUniqueID());
155 muLight->SetTrackPDGCode(part->GetPdgCode());
fa6e7866 156 v.SetPxPyPzE(part->Px(), part->Py(), part->Pz(), part->Energy());
f202486b 157 muLight->SetPGen(v);
158 muLight->FillMuonHistory(pstack, part);
4d309390 159 // muLight.PrintInfo("A");
f202486b 160
161 }
9bdda5f6 162
f202486b 163 } // end esd track
fa6e7866 164
165 // now loop over muon pairs to build dimuons
166 Int_t nmuons = muonArray->GetEntriesFast();
167 Int_t ndimuons = 0;
168 for(Int_t itrRec1 = 0; itrRec1 < nmuons-1; itrRec1++) {
169 AliMUONTrackLight* mu1 = (AliMUONTrackLight*) muonArray->At(itrRec1);
170 for(Int_t itrRec2 = itrRec1+1; itrRec2 < nmuons; itrRec2++){
171 AliMUONTrackLight* mu2 = (AliMUONTrackLight*) muonArray->At(itrRec2);
4d309390 172 AliMUONPairLight dimuLight;
82724a77 173 dimuLight.SetMuons(*mu1, *mu2);
fa6e7866 174 TClonesArray &dimuons = *dimuonArray;
82724a77 175 new (dimuons[ndimuons++]) AliMUONPairLight(dimuLight);
fa6e7866 176 }
177 }
9bdda5f6 178
fa6e7866 179 treeOut->Fill();
4d309390 180 }
181
fa6e7866 182 fout->cd();
183 treeOut->Write();
184 gSystem->cd(startingDir);
82724a77 185 fout->Close();
82724a77 186 delete muonArray;
187 delete dimuonArray;
4d309390 188 delete treeOut;
189 delete fout;
190 delete rc;
fa6e7866 191}
4d309390 192