1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 //---------------------------------------------------------------------------------
18 // Class AliMCEventHandler
19 // This class gives access to MC truth during the analysis.
20 // Monte Carlo truth is containe in the kinematics tree (produced particles) and
21 // the tree of reference hits.
23 // Origin: Andreas Morsch, CERN, andreas.morsch@cern.ch
24 //---------------------------------------------------------------------------------
28 #include "AliMCEventHandler.h"
29 #include "AliMCEvent.h"
30 #include "AliTrackReference.h"
31 #include "AliHeader.h"
37 #include <TParticle.h>
39 #include <TClonesArray.h>
40 #include <TDirectoryFile.h>
42 ClassImp(AliMCEventHandler)
44 AliMCEventHandler::AliMCEventHandler() :
46 fMCEvent(new AliMCEvent()),
57 fPathName(new TString("./")),
63 // Default constructor
66 AliMCEventHandler::AliMCEventHandler(const char* name, const char* title) :
67 AliVEventHandler(name, title),
68 fMCEvent(new AliMCEvent()),
79 fPathName(new TString("./")),
86 AliMCEventHandler::~AliMCEventHandler()
95 Bool_t AliMCEventHandler::InitIO(Option_t* opt)
99 if (!(strcmp(opt, "proof")) || !(strcmp(opt, "local"))) return kTRUE;
101 fFileE = TFile::Open(Form("%sgalice.root", fPathName->Data()));
102 if (!fFileE) AliFatal(Form("AliMCEventHandler:galice.root not found in directory %s ! \n", fPathName->Data()));
106 fFileE->GetObject("TE", fTreeE);
107 // Connect Tree E to the MCEvent
108 fMCEvent->ConnectTreeE(fTreeE);
109 fNEvent = fTreeE->GetEntries();
112 fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension));
113 if (!fFileK) AliFatal(Form("AliMCEventHandler:Kinematics.root not found in directory %s ! \n", fPathName));
114 fEventsPerFile = fFileK->GetNkeys() - fFileK->GetNProcessIDs();
118 fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension));
119 if (!fFileTR) AliWarning(Form("AliMCEventHandler:TrackRefs.root not found in directory %s ! \n", fPathName->Data()));
122 // Reset the event number
125 printf("AliMCEvenHandler::Init() %d\n",__LINE__);
126 AliInfo(Form("AliMCEventHandler:Number of events in this directory %5d \n", fNEvent));
130 Bool_t AliMCEventHandler::GetEvent(Int_t iev)
132 // Load the event number iev
134 // Calculate the file number
135 Int_t inew = iev / fEventsPerFile;
136 if (inew != fFileNumber) {
138 if (!OpenFile(fFileNumber)){
144 sprintf(folder, "Event%d", iev);
146 fTreeE->GetEntry(iev);
148 fFileK->GetObject(folder, fDirK);
150 AliWarning(Form("AliMCEventHandler: Event #%5d not found\n", iev));
153 fDirK ->GetObject("TreeK", fTreeK);
154 // Connect TreeK to MCEvent
155 fMCEvent->ConnectTreeK(fTreeK);
158 // Check which format has been read
159 fFileTR->GetObject(folder, fDirTR);
160 fDirTR->GetObject("TreeTR", fTreeTR);
162 // Connect TR to MCEvent
163 fMCEvent->ConnectTreeTR(fTreeTR);
169 Bool_t AliMCEventHandler::OpenFile(Int_t i)
174 fExtension = Form("%d", i);
181 fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension));
183 AliFatal(Form("AliMCEventHandler:Kinematics%s.root not found in directory %s ! \n", fExtension, fPathName->Data()));
188 fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension));
190 AliWarning(Form("AliMCEventHandler:TrackRefs%s.root not found in directory %s ! \n", fExtension, fPathName->Data()));
197 Bool_t AliMCEventHandler::BeginEvent(Long64_t entry)
199 // Read the next event
207 if (entry >= fNEvent) {
208 AliWarning(Form("AliMCEventHandler: Event number out of range %5d %5d\n", entry,fNEvent));
211 return GetEvent(entry);
214 Int_t AliMCEventHandler::GetParticleAndTR(Int_t i, TParticle*& particle, TClonesArray*& trefs)
217 return (fMCEvent->GetParticleAndTR(i, particle, trefs));
220 void AliMCEventHandler::DrawCheck(Int_t i, Int_t search)
222 // Retrieve entry i and draw momentum vector and hits
223 fMCEvent->DrawCheck(i, search);
226 Bool_t AliMCEventHandler::Notify(const char *path)
228 // Notify about directory change
229 // The directory is taken from the 'path' argument
231 TString fileName(path);
232 if(fileName.Contains("AliESDs.root")){
233 fileName.ReplaceAll("AliESDs.root", "");
235 else if(fileName.Contains("galice.root")){
236 // for running with galice and kinematics alone...
237 fileName.ReplaceAll("galice.root", "");
240 *fPathName = fileName;
241 printf("AliMCEventHandler::Notify() Path: %s\n", fPathName->Data());
249 void AliMCEventHandler::ResetIO()
251 // Clear header and stack
255 delete fTreeE; fTreeE = 0;
258 if (fFileE) delete fFileE; fFileE = 0;
259 if (fFileK) delete fFileK; fFileK = 0;
260 if (fFileTR) delete fFileTR; fFileTR = 0;
264 Bool_t AliMCEventHandler::FinishEvent()
266 // Clean-up after each event
267 delete fDirTR; fDirTR = 0;
268 delete fDirK; fDirK = 0;
269 fMCEvent->FinishEvent();
273 Bool_t AliMCEventHandler::Terminate()
279 Bool_t AliMCEventHandler::TerminateIO()
286 void AliMCEventHandler::SetInputPath(char* fname)
288 // Set the input path name
290 fPathName = new TString(fname);