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