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5fe09262 | 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 | // 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. | |
22 | // | |
23 | // Origin: Andreas Morsch, CERN, andreas.morsch@cern.ch | |
24 | //--------------------------------------------------------------------------------- | |
25 | ||
26 | ||
27 | ||
28 | #include "AliMCEventHandler.h" | |
415d9f5c | 29 | #include "AliMCEvent.h" |
82418625 | 30 | #include "AliPDG.h" |
5fe09262 | 31 | #include "AliTrackReference.h" |
32 | #include "AliHeader.h" | |
33 | #include "AliStack.h" | |
2c36081e | 34 | #include "AliLog.h" |
5fe09262 | 35 | |
36 | #include <TTree.h> | |
37 | #include <TFile.h> | |
38 | #include <TParticle.h> | |
0a05cd41 | 39 | #include <TString.h> |
5fe09262 | 40 | #include <TClonesArray.h> |
41 | #include <TDirectoryFile.h> | |
5fe09262 | 42 | |
43 | ClassImp(AliMCEventHandler) | |
44 | ||
45 | AliMCEventHandler::AliMCEventHandler() : | |
d2f1d9ef | 46 | AliVEventHandler(), |
415d9f5c | 47 | fMCEvent(new AliMCEvent()), |
5fe09262 | 48 | fFileE(0), |
49 | fFileK(0), | |
50 | fFileTR(0), | |
5fe09262 | 51 | fTreeE(0), |
52 | fTreeK(0), | |
53 | fTreeTR(0), | |
5efedd31 | 54 | fDirK(0), |
55 | fDirTR(0), | |
5fe09262 | 56 | fNEvent(-1), |
57 | fEvent(-1), | |
0a05cd41 | 58 | fPathName(new TString("./")), |
9aea8469 | 59 | fExtension(""), |
60 | fFileNumber(0), | |
969c7896 | 61 | fEventsPerFile(0), |
c8b7b5d3 | 62 | fReadTR(kTRUE), |
63 | fInitOk(kFALSE) | |
5fe09262 | 64 | { |
82418625 | 65 | // |
66 | // Default constructor | |
67 | // | |
68 | // Be sure to add all particles to the PDG database | |
69 | AliPDG::AddParticlesToPdgDataBase(); | |
5fe09262 | 70 | } |
71 | ||
72 | AliMCEventHandler::AliMCEventHandler(const char* name, const char* title) : | |
d2f1d9ef | 73 | AliVEventHandler(name, title), |
415d9f5c | 74 | fMCEvent(new AliMCEvent()), |
5fe09262 | 75 | fFileE(0), |
76 | fFileK(0), | |
77 | fFileTR(0), | |
5fe09262 | 78 | fTreeE(0), |
79 | fTreeK(0), | |
80 | fTreeTR(0), | |
5efedd31 | 81 | fDirK(0), |
82 | fDirTR(0), | |
5fe09262 | 83 | fNEvent(-1), |
84 | fEvent(-1), | |
0a05cd41 | 85 | fPathName(new TString("./")), |
9aea8469 | 86 | fExtension(""), |
87 | fFileNumber(0), | |
0cd61c1d | 88 | fEventsPerFile(0), |
c8b7b5d3 | 89 | fReadTR(kTRUE), |
90 | fInitOk(kFALSE) | |
5fe09262 | 91 | { |
82418625 | 92 | // |
93 | // Constructor | |
94 | // | |
95 | // Be sure to add all particles to the PDG database | |
96 | AliPDG::AddParticlesToPdgDataBase(); | |
5fe09262 | 97 | } |
98 | AliMCEventHandler::~AliMCEventHandler() | |
99 | { | |
100 | // Destructor | |
415d9f5c | 101 | delete fMCEvent; |
5fe09262 | 102 | delete fFileE; |
103 | delete fFileK; | |
104 | delete fFileTR; | |
105 | } | |
106 | ||
300d5701 | 107 | Bool_t AliMCEventHandler::Init(Option_t* opt) |
5fe09262 | 108 | { |
109 | // Initialize input | |
110 | // | |
6073f8c9 | 111 | if (!(strcmp(opt, "proof")) || !(strcmp(opt, "local"))) return kTRUE; |
112 | // | |
0a05cd41 | 113 | fFileE = TFile::Open(Form("%sgalice.root", fPathName->Data())); |
c8b7b5d3 | 114 | if (!fFileE) { |
115 | AliError(Form("AliMCEventHandler:galice.root not found in directory %s ! \n", fPathName->Data())); | |
116 | fInitOk = kFALSE; | |
117 | return kFALSE; | |
118 | } | |
119 | ||
415d9f5c | 120 | // |
121 | // Tree E | |
5fe09262 | 122 | fFileE->GetObject("TE", fTreeE); |
415d9f5c | 123 | // Connect Tree E to the MCEvent |
124 | fMCEvent->ConnectTreeE(fTreeE); | |
5fe09262 | 125 | fNEvent = fTreeE->GetEntries(); |
126 | // | |
127 | // Tree K | |
0a05cd41 | 128 | fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension)); |
c8b7b5d3 | 129 | if (!fFileK) { |
130 | AliError(Form("AliMCEventHandler:Kinematics.root not found in directory %s ! \n", fPathName)); | |
131 | fInitOk = kFALSE; | |
132 | return kFALSE; | |
133 | } | |
134 | ||
9aea8469 | 135 | fEventsPerFile = fFileK->GetNkeys() - fFileK->GetNProcessIDs(); |
5fe09262 | 136 | // |
137 | // Tree TR | |
969c7896 | 138 | if (fReadTR) { |
c8b7b5d3 | 139 | fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension)); |
140 | if (!fFileTR) { | |
141 | AliError(Form("AliMCEventHandler:TrackRefs.root not found in directory %s ! \n", fPathName->Data())); | |
142 | fInitOk = kFALSE; | |
143 | return kFALSE; | |
144 | } | |
969c7896 | 145 | } |
5fe09262 | 146 | // |
147 | // Reset the event number | |
2c36081e | 148 | fEvent = -1; |
149 | fFileNumber = 0; | |
b544c64d | 150 | AliInfo(Form("Number of events in this directory %5d \n", fNEvent)); |
c8b7b5d3 | 151 | fInitOk = kTRUE; |
5fe09262 | 152 | return kTRUE; |
5fe09262 | 153 | } |
154 | ||
9aea8469 | 155 | Bool_t AliMCEventHandler::GetEvent(Int_t iev) |
156 | { | |
157 | // Load the event number iev | |
2c36081e | 158 | // |
159 | // Calculate the file number | |
c8b7b5d3 | 160 | if (!fInitOk) return kFALSE; |
161 | ||
415d9f5c | 162 | Int_t inew = iev / fEventsPerFile; |
9aea8469 | 163 | if (inew != fFileNumber) { |
164 | fFileNumber = inew; | |
165 | if (!OpenFile(fFileNumber)){ | |
166 | return kFALSE; | |
167 | } | |
168 | } | |
2c36081e | 169 | // Folder name |
5fe09262 | 170 | char folder[20]; |
9aea8469 | 171 | sprintf(folder, "Event%d", iev); |
5fe09262 | 172 | // TreeE |
9aea8469 | 173 | fTreeE->GetEntry(iev); |
5fe09262 | 174 | // Tree K |
5efedd31 | 175 | fFileK->GetObject(folder, fDirK); |
176 | if (!fDirK) { | |
2c36081e | 177 | AliWarning(Form("AliMCEventHandler: Event #%5d not found\n", iev)); |
9aea8469 | 178 | return kFALSE; |
179 | } | |
5efedd31 | 180 | fDirK ->GetObject("TreeK", fTreeK); |
415d9f5c | 181 | // Connect TreeK to MCEvent |
182 | fMCEvent->ConnectTreeK(fTreeK); | |
5fe09262 | 183 | //Tree TR |
07bd4750 | 184 | if (fFileTR) { |
5efedd31 | 185 | // Check which format has been read |
186 | fFileTR->GetObject(folder, fDirTR); | |
187 | fDirTR->GetObject("TreeTR", fTreeTR); | |
415d9f5c | 188 | // |
189 | // Connect TR to MCEvent | |
190 | fMCEvent->ConnectTreeTR(fTreeTR); | |
5fe09262 | 191 | } |
5fe09262 | 192 | // |
5fe09262 | 193 | return kTRUE; |
9aea8469 | 194 | } |
195 | ||
196 | Bool_t AliMCEventHandler::OpenFile(Int_t i) | |
197 | { | |
198 | // Open file i | |
9aea8469 | 199 | if (i > 0) { |
200 | fExtension = Form("%d", i); | |
201 | } else { | |
202 | fExtension = ""; | |
203 | } | |
204 | ||
205 | ||
206 | delete fFileK; | |
0a05cd41 | 207 | fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension)); |
9aea8469 | 208 | if (!fFileK) { |
c8b7b5d3 | 209 | AliError(Form("AliMCEventHandler:Kinematics%s.root not found in directory %s ! \n", fExtension, fPathName->Data())); |
210 | fInitOk = kFALSE; | |
211 | return kFALSE; | |
9aea8469 | 212 | } |
213 | ||
c8b7b5d3 | 214 | if (fReadTR) { |
215 | delete fFileTR; | |
216 | fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension)); | |
217 | if (!fFileTR) { | |
218 | AliWarning(Form("AliMCEventHandler:TrackRefs%s.root not found in directory %s ! \n", fExtension, fPathName->Data())); | |
219 | fInitOk = kFALSE; | |
220 | return kFALSE; | |
221 | } | |
9aea8469 | 222 | } |
223 | ||
c8b7b5d3 | 224 | fInitOk = kTRUE; |
225 | return kTRUE; | |
9aea8469 | 226 | } |
227 | ||
ed97dc98 | 228 | Bool_t AliMCEventHandler::BeginEvent(Long64_t entry) |
9aea8469 | 229 | { |
230 | // Read the next event | |
ed97dc98 | 231 | if (entry == -1) { |
232 | fEvent++; | |
233 | entry = fEvent; | |
234 | } else { | |
235 | fEvent = entry; | |
236 | } | |
237 | ||
238 | if (entry >= fNEvent) { | |
f6065654 | 239 | AliWarning(Form("AliMCEventHandler: Event number out of range %5d %5d\n", entry,fNEvent)); |
9aea8469 | 240 | return kFALSE; |
241 | } | |
ed97dc98 | 242 | return GetEvent(entry); |
5fe09262 | 243 | } |
244 | ||
245 | Int_t AliMCEventHandler::GetParticleAndTR(Int_t i, TParticle*& particle, TClonesArray*& trefs) | |
246 | { | |
247 | // Retrieve entry i | |
c8b7b5d3 | 248 | if (!fInitOk) { |
249 | return 0; | |
250 | } else { | |
251 | return (fMCEvent->GetParticleAndTR(i, particle, trefs)); | |
252 | } | |
5fe09262 | 253 | } |
254 | ||
2d8f26f6 | 255 | void AliMCEventHandler::DrawCheck(Int_t i, Int_t search) |
5fe09262 | 256 | { |
257 | // Retrieve entry i and draw momentum vector and hits | |
415d9f5c | 258 | fMCEvent->DrawCheck(i, search); |
5fe09262 | 259 | } |
260 | ||
890126ab | 261 | Bool_t AliMCEventHandler::Notify(const char *path) |
5fe09262 | 262 | { |
53faeca4 | 263 | // Notify about directory change |
264 | // The directory is taken from the 'path' argument | |
265 | // Reconnect trees | |
266 | TString fileName(path); | |
267 | if(fileName.Contains("AliESDs.root")){ | |
268 | fileName.ReplaceAll("AliESDs.root", ""); | |
269 | } | |
c8b5ce3a | 270 | else if(fileName.Contains("AliAOD.root")){ |
271 | fileName.ReplaceAll("AliAOD.root", ""); | |
272 | } | |
53faeca4 | 273 | else if(fileName.Contains("galice.root")){ |
274 | // for running with galice and kinematics alone... | |
275 | fileName.ReplaceAll("galice.root", ""); | |
276 | } | |
277 | ||
278 | *fPathName = fileName; | |
b544c64d | 279 | AliInfo(Form("Notify() Path: %s\n", fPathName->Data())); |
53faeca4 | 280 | |
f6065654 | 281 | ResetIO(); |
282 | InitIO(""); | |
283 | ||
5fe09262 | 284 | return kTRUE; |
285 | } | |
36e82a52 | 286 | |
5fe09262 | 287 | void AliMCEventHandler::ResetIO() |
288 | { | |
5efedd31 | 289 | // Clear header and stack |
aff49450 | 290 | if (fInitOk) fMCEvent->Clean(); |
5efedd31 | 291 | |
36e82a52 | 292 | // Delete Tree E |
415d9f5c | 293 | delete fTreeE; fTreeE = 0; |
36e82a52 | 294 | |
5efedd31 | 295 | // Reset files |
89f249fc | 296 | if (fFileE) {delete fFileE; fFileE = 0;} |
297 | if (fFileK) {delete fFileK; fFileK = 0;} | |
298 | if (fFileTR) {delete fFileTR; fFileTR = 0;} | |
19cfde04 | 299 | fExtension=""; |
c8b7b5d3 | 300 | fInitOk = kFALSE; |
5fe09262 | 301 | } |
302 | ||
303 | ||
304 | Bool_t AliMCEventHandler::FinishEvent() | |
305 | { | |
5efedd31 | 306 | // Clean-up after each event |
307 | delete fDirTR; fDirTR = 0; | |
308 | delete fDirK; fDirK = 0; | |
aff49450 | 309 | if (fInitOk) fMCEvent->FinishEvent(); |
5fe09262 | 310 | return kTRUE; |
311 | } | |
312 | ||
313 | Bool_t AliMCEventHandler::Terminate() | |
314 | { | |
315 | // Dummy | |
316 | return kTRUE; | |
317 | } | |
318 | ||
319 | Bool_t AliMCEventHandler::TerminateIO() | |
320 | { | |
321 | // Dummy | |
322 | return kTRUE; | |
323 | } | |
324 | ||
0a05cd41 | 325 | |
0931e76a | 326 | void AliMCEventHandler::SetInputPath(const char* fname) |
0a05cd41 | 327 | { |
328 | // Set the input path name | |
329 | delete fPathName; | |
330 | fPathName = new TString(fname); | |
331 | } |