these TTask are posted to the apropriate folders //YSAlice/tasks/(S)Digitizer and...
[u/mrichter/AliRoot.git] / PHOS / AliPHOSSDigitizer.cxx
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990119d6 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//_________________________________________________________________________
7acf6008 19// This is a TTask that makes SDigits out of Hits
20// A Summable Digits is the sum of all hits originating
21// from one primary in one active cell
22// A threshold for assignment of the primary to SDigit is applied
23// SDigits are written to TreeS, branch "PHOS"
24// AliPHOSSDigitizer with all current parameters is written
25// to TreeS branch "AliPHOSSDigitizer".
f035f6ce 26// Both branches have the same title. If necessary one can produce
27// another set of SDigits with different parameters. Two versions
28// can be distunguished using titles of the branches.
29// User case:
a4e98857 30// root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
31// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
32// root [1] s->ExecuteTask()
f035f6ce 33// // Makes SDigitis for all events stored in galice.root
a4e98857 34// root [2] s->SetPedestalParameter(0.001)
f035f6ce 35// // One can change parameters of digitization
3de072dc 36// root [3] s->SetSDigitsBranch("Pedestal 0.001")
f035f6ce 37// // and write them into the new branch
3de072dc 38// root [4] s->ExecuteTask("deb all tim")
f035f6ce 39// // available parameters:
40// deb - print # of produced SDigitis
41// deb all - print # and list of produced SDigits
42// tim - print benchmarking information
990119d6 43//
44//*-- Author : Dmitri Peressounko (SUBATECH & KI)
45//////////////////////////////////////////////////////////////////////////////
46
f035f6ce 47
990119d6 48// --- ROOT system ---
7acf6008 49#include "TFile.h"
990119d6 50#include "TTask.h"
51#include "TTree.h"
52#include "TSystem.h"
7acf6008 53#include "TROOT.h"
54#include "TFolder.h"
55#include "TBenchmark.h"
990119d6 56// --- Standard library ---
7acf6008 57#include <iomanip.h>
990119d6 58
59// --- AliRoot header files ---
7acf6008 60#include "AliRun.h"
990119d6 61#include "AliPHOSDigit.h"
62#include "AliPHOSHit.h"
990119d6 63#include "AliPHOSSDigitizer.h"
64
990119d6 65
66ClassImp(AliPHOSSDigitizer)
67
68
69//____________________________________________________________________________
70 AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("AliPHOSSDigitizer","")
71{
72 // ctor
2bd5457f 73 fA = 0;
74 fB = 10000000.;
990119d6 75 fPrimThreshold = 0.01 ;
2bd5457f 76 fNevents = 0 ;
77 fSDigits = 0 ;
78 fHits = 0 ;
7acf6008 79 fIsInitialized = kFALSE ;
990119d6 80
81}
7acf6008 82
990119d6 83//____________________________________________________________________________
7acf6008 84AliPHOSSDigitizer::AliPHOSSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask("AliPHOSSDigitizer","")
990119d6 85{
86 // ctor
2bd5457f 87 fA = 0;
88 fB = 10000000.;
990119d6 89 fPrimThreshold = 0.01 ;
2bd5457f 90 fNevents = 0 ;
91 fSDigitsTitle = sDigitsTitle ;
92 fHeadersFile = headerFile ;
93 fIsInitialized = kFALSE ;
7acf6008 94
2bd5457f 95 Init();
990119d6 96}
97
98//____________________________________________________________________________
7acf6008 99AliPHOSSDigitizer::~AliPHOSSDigitizer()
990119d6 100{
101 // dtor
7acf6008 102 if(fSDigits)
103 delete fSDigits ;
104 if(fHits)
105 delete fHits ;
990119d6 106}
7acf6008 107//____________________________________________________________________________
a4e98857 108void AliPHOSSDigitizer::Init()
109{
2bd5457f 110 // Initialization: open root-file, allocate arrays for hits and sdigits,
111 // attach task SDigitizer to the list of PHOS tasks
112 //
a4e98857 113 // Initialization can not be done in the default constructor
7acf6008 114
115 if(!fIsInitialized){
990119d6 116
7acf6008 117 if(fHeadersFile.IsNull())
118 fHeadersFile="galice.root" ;
990119d6 119
7acf6008 120 TFile * file = (TFile*) gROOT->GetFile(fHeadersFile.Data() ) ;
121
122 //if file was not opened yet, read gAlice
123 if(file == 0){
2bd5457f 124 if(fHeadersFile.Contains("rfio"))
125 file = TFile::Open(fHeadersFile,"update") ;
126 else
127 file = new TFile(fHeadersFile.Data(),"update") ;
7acf6008 128 gAlice = (AliRun *) file->Get("gAlice") ;
129 }
130
131 fHits = new TClonesArray("AliPHOSHit",1000);
132 fSDigits = new TClonesArray("AliPHOSDigit",1000);
133
2bd5457f 134 //add Task to //YSAlice/tasks/(S)Diditizer/PHOS
135 TFolder * alice = (TFolder*)gROOT->GetListOfBrowsables()->FindObject("YSAlice") ;
136 TTask * aliceSD = (TTask*)alice->FindObject("tasks/(S)Digitizer") ;
137 TTask * phosSD = (TTask*)aliceSD->GetListOfTasks()->FindObject("PHOS") ;
138 phosSD->Add(this) ;
7acf6008 139
140 fIsInitialized = kTRUE ;
141 }
142}
990119d6 143//____________________________________________________________________________
a4e98857 144void AliPHOSSDigitizer::Exec(Option_t *option)
145{
146 // Collects all hits in the same active volume into digit
990119d6 147
7acf6008 148 if(!fIsInitialized)
149 Init() ;
990119d6 150
7acf6008 151 if(strstr(option,"tim"))
152 gBenchmark->Start("PHOSSDigitizer");
990119d6 153
7acf6008 154 fNevents = (Int_t) gAlice->TreeE()->GetEntries() ;
990119d6 155
156 Int_t ievent ;
157 for(ievent = 0; ievent < fNevents; ievent++){
158 gAlice->GetEvent(ievent) ;
159 gAlice->SetEvent(ievent) ;
160
161 if(gAlice->TreeH()==0){
162 cout << "AliPHOSSDigitizer: There is no Hit Tree" << endl;
163 return ;
164 }
165
7acf6008 166 //set address of the hits
167 TBranch * branch = gAlice->TreeH()->GetBranch("PHOS");
168 if (branch)
169 branch->SetAddress(&fHits);
170 else{
171 cout << "ERROR in AliPHOSSDigitizer: "<< endl ;
172 cout << " no branch PHOS in TreeH"<< endl ;
173 cout << " do nothing " << endl ;
174 return ;
175 }
990119d6 176
7acf6008 177 fSDigits->Clear();
990119d6 178 Int_t nSdigits = 0 ;
179
990119d6 180
7acf6008 181 //Now made SDigits from hits, for PHOS it is the same, so just copy
990119d6 182 Int_t itrack ;
077397f6 183 for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
990119d6 184
077397f6 185 //=========== Get the PHOS branch from Hits Tree for the Primary track itrack
186 branch->GetEntry(itrack,0);
990119d6 187
188 Int_t i;
7acf6008 189 for ( i = 0 ; i < fHits->GetEntries() ; i++ ) {
190 AliPHOSHit * hit = (AliPHOSHit*)fHits->At(i) ;
990119d6 191
192 // Assign primary number only if contribution is significant
193 if( hit->GetEnergy() > fPrimThreshold)
077397f6 194 new((*fSDigits)[nSdigits]) AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
990119d6 195 else
077397f6 196 new((*fSDigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
990119d6 197
990119d6 198 nSdigits++ ;
199
990119d6 200 }
201
202 } // loop over tracks
203
7acf6008 204 fSDigits->Sort() ;
990119d6 205
7acf6008 206 nSdigits = fSDigits->GetEntriesFast() ;
207 fSDigits->Expand(nSdigits) ;
990119d6 208
209 Int_t i ;
210 for (i = 0 ; i < nSdigits ; i++) {
7acf6008 211 AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(i) ;
990119d6 212 digit->SetIndexInList(i) ;
213 }
7acf6008 214
215 if(gAlice->TreeS() == 0)
216 gAlice->MakeTree("S") ;
217
218 //check, if this branch already exits?
219 TBranch * sdigitsBranch = 0;
220 TBranch * sdigitizerBranch = 0;
221
222 TObjArray * branches = gAlice->TreeS()->GetListOfBranches() ;
223 Int_t ibranch;
224 Bool_t phosNotFound = kTRUE ;
225 Bool_t sdigitizerNotFound = kTRUE ;
226
227 for(ibranch = 0;ibranch <branches->GetEntries();ibranch++){
228
229 if(phosNotFound){
230 sdigitsBranch=(TBranch *) branches->At(ibranch) ;
231 if( (strcmp("PHOS",sdigitsBranch->GetName())==0 ) &&
232 (fSDigitsTitle.CompareTo(sdigitsBranch->GetTitle()) == 0) )
233 phosNotFound = kFALSE ;
234 }
235 if(sdigitizerNotFound){
236 sdigitizerBranch = (TBranch *) branches->At(ibranch) ;
237 if( (strcmp(sdigitizerBranch->GetName(),"AliPHOSSDigitizer") == 0)&&
238 (fSDigitsTitle.CompareTo(sdigitizerBranch->GetTitle()) == 0) )
239 sdigitizerNotFound = kFALSE ;
240 }
241 }
242
243 if(!(sdigitizerNotFound && phosNotFound)){
244 cout << "AliPHOSSdigitizer error:" << endl ;
245 cout << "Can not overwrite existing branches: do not write" << endl ;
246 return ;
247 }
990119d6 248
7acf6008 249 //Make (if necessary) branches
250 char * file =0;
251 if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
252 file = new char[strlen(gAlice->GetBaseFile())+20] ;
253 sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
254 }
255
256 TDirectory *cwd = gDirectory;
257
258 //First list of sdigits
259 Int_t bufferSize = 32000 ;
260 sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&fSDigits,bufferSize);
261 sdigitsBranch->SetTitle(fSDigitsTitle.Data());
262 if (file) {
263 sdigitsBranch->SetFile(file);
264 TIter next( sdigitsBranch->GetListOfBranches());
761e34c0 265 TBranch * subbr;
266 while ((subbr=(TBranch*)next())) {
267 subbr->SetFile(file);
7acf6008 268 }
269 cwd->cd();
270 }
271
272 //second - SDigitizer
273 Int_t splitlevel = 0 ;
274 AliPHOSSDigitizer * sd = this ;
275 sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
276 &sd,bufferSize,splitlevel);
277 sdigitizerBranch->SetTitle(fSDigitsTitle.Data());
278 if (file) {
279 sdigitizerBranch->SetFile(file);
280 TIter next( sdigitizerBranch->GetListOfBranches());
761e34c0 281 TBranch * subbr ;
282 while ((subbr=(TBranch*)next())) {
283 subbr->SetFile(file);
7acf6008 284 }
285 cwd->cd();
286 delete file;
287 }
288
761e34c0 289 sdigitsBranch->Fill() ;
290 sdigitizerBranch->Fill() ;
990119d6 291 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
7acf6008 292
293 if(strstr(option,"deb"))
294 PrintSDigits(option) ;
295
990119d6 296 }
7acf6008 297
298 if(strstr(option,"tim")){
299 gBenchmark->Stop("PHOSSDigitizer");
300 cout << "AliPHOSSDigitizer:" << endl ;
301 cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
302 << gBenchmark->GetCpuTime("PHOSSDigitizer")/fNevents << " seconds per event " << endl ;
303 cout << endl ;
304 }
305
306
990119d6 307}
308//__________________________________________________________________
a4e98857 309void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
310{
311 // Setting title to branch SDigits
7acf6008 312 if(!fSDigitsTitle.IsNull())
313 cout << "AliPHOSSdigitizer: changing SDigits file from " <<fSDigitsTitle.Data() << " to " << title << endl ;
314 fSDigitsTitle=title ;
990119d6 315}
316//__________________________________________________________________
a4e98857 317void AliPHOSSDigitizer::Print(Option_t* option)const
318{
319 // Prints parameters of SDigitizer
990119d6 320 cout << "------------------- "<< GetName() << " -------------" << endl ;
7acf6008 321 cout << " Writing SDigitis to branch with title " << fSDigitsTitle.Data() << endl ;
322 cout << " with digitization parameters A = " << fA << endl ;
323 cout << " B = " << fB << endl ;
324 cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
990119d6 325 cout << "---------------------------------------------------"<<endl ;
7acf6008 326
990119d6 327}
328//__________________________________________________________________
a4e98857 329Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
330{
3de072dc 331 // Equal operator.
332 // SDititizers are equal if their pedestal, slope and threshold are equal
333
990119d6 334 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
335 return kTRUE ;
336 else
337 return kFALSE ;
338}
7acf6008 339//__________________________________________________________________
a4e98857 340void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
341{
342 // Prints list of digits produced in the current pass of AliPHOSDigitizer
7acf6008 343
344 cout << "AliPHOSSDigitizer: " << endl ;
345 cout << " Number of entries in SDigits list " << fSDigits->GetEntriesFast() << endl ;
346 cout << endl ;
347
348 if(strstr(option,"all")){// print all digits
349
350 //loop over digits
351 AliPHOSDigit * digit;
352 cout << "SDigit Id " << " Amplitude " << " Index " << " Nprim " << " Primaries list " << endl;
353 Int_t index ;
354 for (index = 0 ; index < fSDigits->GetEntries() ; index++) {
355 digit = (AliPHOSDigit * ) fSDigits->At(index) ;
356 cout << setw(8) << digit->GetId() << " " << setw(3) << digit->GetAmp() << " "
357 << setw(6) << digit->GetIndexInList() << " "
358 << setw(5) << digit->GetNprimary() <<" ";
359
360 Int_t iprimary;
361 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
362 cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
363 cout << endl;
364 }
365
366 }
367}