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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" | |
29 | #include "AliMCEvent.h" | |
30 | #include "AliTrackReference.h" | |
31 | #include "AliHeader.h" | |
32 | #include "AliStack.h" | |
33 | #include "AliLog.h" | |
34 | ||
35 | #include <TTree.h> | |
36 | #include <TFile.h> | |
37 | #include <TParticle.h> | |
38 | #include <TString.h> | |
39 | #include <TClonesArray.h> | |
40 | #include <TDirectoryFile.h> | |
41 | ||
42 | ClassImp(AliMCEventHandler) | |
43 | ||
44 | AliMCEventHandler::AliMCEventHandler() : | |
45 | AliVEventHandler(), | |
46 | fMCEvent(new AliMCEvent()), | |
47 | fFileE(0), | |
48 | fFileK(0), | |
49 | fFileTR(0), | |
50 | fTreeE(0), | |
51 | fTreeK(0), | |
52 | fTreeTR(0), | |
53 | fDirK(0), | |
54 | fDirTR(0), | |
55 | fNEvent(-1), | |
56 | fEvent(-1), | |
57 | fPathName(new TString("./")), | |
58 | fExtension(""), | |
59 | fFileNumber(0), | |
60 | fEventsPerFile(0), | |
61 | fReadTR(kTRUE) | |
62 | { | |
63 | // Default constructor | |
64 | } | |
65 | ||
66 | AliMCEventHandler::AliMCEventHandler(const char* name, const char* title) : | |
67 | AliVEventHandler(name, title), | |
68 | fMCEvent(new AliMCEvent()), | |
69 | fFileE(0), | |
70 | fFileK(0), | |
71 | fFileTR(0), | |
72 | fTreeE(0), | |
73 | fTreeK(0), | |
74 | fTreeTR(0), | |
75 | fDirK(0), | |
76 | fDirTR(0), | |
77 | fNEvent(-1), | |
78 | fEvent(-1), | |
79 | fPathName(new TString("./")), | |
80 | fExtension(""), | |
81 | fFileNumber(0), | |
82 | fEventsPerFile(0), | |
83 | fReadTR(kTRUE) | |
84 | { | |
85 | // Constructor | |
86 | } | |
87 | AliMCEventHandler::~AliMCEventHandler() | |
88 | { | |
89 | // Destructor | |
90 | delete fMCEvent; | |
91 | delete fFileE; | |
92 | delete fFileK; | |
93 | delete fFileTR; | |
94 | } | |
95 | ||
96 | Bool_t AliMCEventHandler::Init(Option_t* opt) | |
97 | { | |
98 | // Initialize input | |
99 | // | |
100 | if (!(strcmp(opt, "proof")) || !(strcmp(opt, "local"))) return kTRUE; | |
101 | // | |
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())); | |
104 | ||
105 | // | |
106 | // Tree E | |
107 | fFileE->GetObject("TE", fTreeE); | |
108 | // Connect Tree E to the MCEvent | |
109 | fMCEvent->ConnectTreeE(fTreeE); | |
110 | fNEvent = fTreeE->GetEntries(); | |
111 | // | |
112 | // Tree K | |
113 | fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension)); | |
114 | if (!fFileK) AliFatal(Form("AliMCEventHandler:Kinematics.root not found in directory %s ! \n", fPathName)); | |
115 | fEventsPerFile = fFileK->GetNkeys() - fFileK->GetNProcessIDs(); | |
116 | // | |
117 | // Tree TR | |
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 | } | |
122 | // | |
123 | // Reset the event number | |
124 | fEvent = -1; | |
125 | fFileNumber = 0; | |
126 | printf("AliMCEvenHandler::Init() %d\n",__LINE__); | |
127 | AliInfo(Form("AliMCEventHandler:Number of events in this directory %5d \n", fNEvent)); | |
128 | return kTRUE; | |
129 | } | |
130 | ||
131 | Bool_t AliMCEventHandler::GetEvent(Int_t iev) | |
132 | { | |
133 | // Load the event number iev | |
134 | // | |
135 | // Calculate the file number | |
136 | Int_t inew = iev / fEventsPerFile; | |
137 | if (inew != fFileNumber) { | |
138 | fFileNumber = inew; | |
139 | if (!OpenFile(fFileNumber)){ | |
140 | return kFALSE; | |
141 | } | |
142 | } | |
143 | // Folder name | |
144 | char folder[20]; | |
145 | sprintf(folder, "Event%d", iev); | |
146 | // TreeE | |
147 | fTreeE->GetEntry(iev); | |
148 | // Tree K | |
149 | fFileK->GetObject(folder, fDirK); | |
150 | if (!fDirK) { | |
151 | AliWarning(Form("AliMCEventHandler: Event #%5d not found\n", iev)); | |
152 | return kFALSE; | |
153 | } | |
154 | fDirK ->GetObject("TreeK", fTreeK); | |
155 | // Connect TreeK to MCEvent | |
156 | fMCEvent->ConnectTreeK(fTreeK); | |
157 | //Tree TR | |
158 | if (fFileTR) { | |
159 | // Check which format has been read | |
160 | fFileTR->GetObject(folder, fDirTR); | |
161 | fDirTR->GetObject("TreeTR", fTreeTR); | |
162 | // | |
163 | // Connect TR to MCEvent | |
164 | fMCEvent->ConnectTreeTR(fTreeTR); | |
165 | } | |
166 | // | |
167 | return kTRUE; | |
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; | |
182 | fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension)); | |
183 | if (!fFileK) { | |
184 | AliFatal(Form("AliMCEventHandler:Kinematics%s.root not found in directory %s ! \n", fExtension, fPathName->Data())); | |
185 | ok = kFALSE; | |
186 | } | |
187 | ||
188 | delete fFileTR; | |
189 | fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension)); | |
190 | if (!fFileTR) { | |
191 | AliWarning(Form("AliMCEventHandler:TrackRefs%s.root not found in directory %s ! \n", fExtension, fPathName->Data())); | |
192 | ok = kFALSE; | |
193 | } | |
194 | ||
195 | return ok; | |
196 | } | |
197 | ||
198 | Bool_t AliMCEventHandler::BeginEvent(Long64_t entry) | |
199 | { | |
200 | // Read the next event | |
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 %5d\n", entry,fNEvent)); | |
210 | return kFALSE; | |
211 | } | |
212 | return GetEvent(entry); | |
213 | } | |
214 | ||
215 | Int_t AliMCEventHandler::GetParticleAndTR(Int_t i, TParticle*& particle, TClonesArray*& trefs) | |
216 | { | |
217 | // Retrieve entry i | |
218 | return (fMCEvent->GetParticleAndTR(i, particle, trefs)); | |
219 | } | |
220 | ||
221 | void AliMCEventHandler::DrawCheck(Int_t i, Int_t search) | |
222 | { | |
223 | // Retrieve entry i and draw momentum vector and hits | |
224 | fMCEvent->DrawCheck(i, search); | |
225 | } | |
226 | ||
227 | Bool_t AliMCEventHandler::Notify(const char *path) | |
228 | { | |
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("AliAOD.root")){ | |
237 | fileName.ReplaceAll("AliAOD.root", ""); | |
238 | } | |
239 | else if(fileName.Contains("galice.root")){ | |
240 | // for running with galice and kinematics alone... | |
241 | fileName.ReplaceAll("galice.root", ""); | |
242 | } | |
243 | ||
244 | *fPathName = fileName; | |
245 | printf("AliMCEventHandler::Notify() Path: %s\n", fPathName->Data()); | |
246 | ||
247 | ResetIO(); | |
248 | InitIO(""); | |
249 | ||
250 | return kTRUE; | |
251 | } | |
252 | ||
253 | void AliMCEventHandler::ResetIO() | |
254 | { | |
255 | // Clear header and stack | |
256 | fMCEvent->Clean(); | |
257 | ||
258 | // Delete Tree E | |
259 | delete fTreeE; fTreeE = 0; | |
260 | ||
261 | // Reset files | |
262 | if (fFileE) {delete fFileE; fFileE = 0;} | |
263 | if (fFileK) {delete fFileK; fFileK = 0;} | |
264 | if (fFileTR) {delete fFileTR; fFileTR = 0;} | |
265 | fExtension=""; | |
266 | } | |
267 | ||
268 | ||
269 | Bool_t AliMCEventHandler::FinishEvent() | |
270 | { | |
271 | // Clean-up after each event | |
272 | delete fDirTR; fDirTR = 0; | |
273 | delete fDirK; fDirK = 0; | |
274 | fMCEvent->FinishEvent(); | |
275 | return kTRUE; | |
276 | } | |
277 | ||
278 | Bool_t AliMCEventHandler::Terminate() | |
279 | { | |
280 | // Dummy | |
281 | return kTRUE; | |
282 | } | |
283 | ||
284 | Bool_t AliMCEventHandler::TerminateIO() | |
285 | { | |
286 | // Dummy | |
287 | return kTRUE; | |
288 | } | |
289 | ||
290 | ||
291 | void AliMCEventHandler::SetInputPath(const char* fname) | |
292 | { | |
293 | // Set the input path name | |
294 | delete fPathName; | |
295 | fPathName = new TString(fname); | |
296 | } |