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 **************************************************************************/
18 //_________________________________________________________________________
20 // A Digit is the sum of the energy lost in an EMCAL Tower
21 // It also stores information on Primary, and enterring particle
22 // tracknumbers Digits are created using AliEMCALSDigitizer, followed
23 // by AliEMCALDigitizer
25 //*-- Author: Sahal Yacoob (LBL)
26 // based on : AliPHOSDigit
27 //__________________________________________________________________________
29 // --- ROOT system ---
30 #include <Riostream.h>
33 // --- Standard library ---
35 // --- AliRoot header files ---
37 #include "AliEMCALDigit.h"
38 #include "AliEMCALGeometry.h"
40 ClassImp(AliEMCALDigit)
42 //____________________________________________________________________________
43 AliEMCALDigit::AliEMCALDigit() :
60 // Need to initialise for reading old files
61 fPrimary = new Int_t[fNMaxPrimary] ;
62 fDEPrimary = new Float_t[fNMaxPrimary] ;
63 fIparent = new Int_t[fNMaxiparent] ;
64 fDEParent = new Float_t[fNMaxiparent] ;
65 for ( Int_t i = 0; i < fNMaxPrimary ; i++) {
70 for ( Int_t i = 0; i < fNMaxiparent ; i++) {
76 //____________________________________________________________________________
77 AliEMCALDigit::AliEMCALDigit(Int_t primary, Int_t iparent, Int_t id, Int_t DigEnergy, Float_t time, Int_t index, Float_t dE)
93 // data memebrs of the base class (AliNewDigit)
96 fIndexInList = index ;
99 fPrimary = new Int_t[fNMaxPrimary] ;
100 fDEPrimary = new Float_t[fNMaxPrimary] ;
101 fIparent = new Int_t[fNMaxiparent] ;
102 fDEParent = new Float_t[fNMaxiparent] ;
105 fPrimary[0] = primary ;
108 fIparent[0] = iparent ;
111 else{ //If the contribution of this primary smaller than fDigitThreshold (AliEMCALv1)
120 for ( i = 1; i < fNMaxPrimary ; i++) {
125 for ( i = 1; i< fNMaxiparent ; i++) {
131 //____________________________________________________________________________
132 AliEMCALDigit::AliEMCALDigit(const AliEMCALDigit & digit)
133 : AliDigitNew(digit),
134 fNprimary(digit.fNprimary),
135 fNMaxPrimary(digit.fNMaxPrimary),
138 fNiparent(digit.fNiparent),
139 fNMaxiparent(digit.fNMaxiparent),
142 fMaxIter(digit.fMaxIter),
148 // data memebrs of the base class (AliNewDigit)
151 fIndexInList = digit.fIndexInList ;
154 fPrimary = new Int_t[fNMaxPrimary] ;
155 fDEPrimary = new Float_t[fNMaxPrimary] ;
156 fIparent = new Int_t[fNMaxiparent] ;
157 fDEParent = new Float_t[fNMaxiparent] ;
159 for ( i = 0; i < fNMaxPrimary ; i++) {
160 fPrimary[i] = digit.fPrimary[i] ;
161 fDEPrimary[i] = digit.fDEPrimary[i] ;
164 for (j = 0; j< fNMaxiparent ; j++) {
165 fIparent[j] = digit.fIparent[j] ;
166 fDEParent[j] = digit.fDEParent[j] ;
170 //____________________________________________________________________________
171 AliEMCALDigit::~AliEMCALDigit()
173 // Delete array of primiries if any
175 delete [] fDEPrimary ;
177 delete [] fDEParent ;
180 //____________________________________________________________________________
181 Int_t AliEMCALDigit::Compare(const TObject * obj) const
183 // Compares two digits with respect to its Id
184 // to sort according increasing Id
188 AliEMCALDigit * digit = (AliEMCALDigit *)obj ;
190 Int_t iddiff = fId - digit->GetId() ;
194 else if ( iddiff < 0 )
203 //____________________________________________________________________________
204 Float_t AliEMCALDigit::GetEta() const
206 //return pseudorapidity for this digit
207 // should be change in EMCALGeometry - 19-nov-04
208 Float_t eta=-10., phi=-10.;
210 const AliEMCALGeometry *g = AliEMCALGeometry::GetInstance();
211 g->EtaPhiFromIndex(id,eta,phi);
215 //____________________________________________________________________________
216 Float_t AliEMCALDigit::GetPhi() const
218 //return phi coordinate of digit
219 // should be change in EMCALGeometry - 19-nov-04
220 Float_t eta=-10., phi=-10.;
222 const AliEMCALGeometry *g = AliEMCALGeometry::GetInstance();
223 g->EtaPhiFromIndex(id,eta,phi);
227 //____________________________________________________________________________
228 Int_t AliEMCALDigit::GetPrimary(Int_t index) const
230 // retrieves the primary particle number given its index in the list
231 if ( (index <= fNprimary) && (index > 0)){
232 return fPrimary[index-1] ;
238 //____________________________________________________________________________
239 Float_t AliEMCALDigit::GetDEPrimary(Int_t index) const
241 // retrieves the primary particle energy contribution
242 // given its index in the list
243 if ( (index <= fNprimary) && (index > 0)){
244 return fDEPrimary[index-1] ;
251 //____________________________________________________________________________
252 Int_t AliEMCALDigit::GetIparent(Int_t index) const
254 // retrieves the primary particle number given its index in the list
255 if ( index <= fNiparent && index > 0){
256 return fIparent[index-1] ;
263 //____________________________________________________________________________
264 Float_t AliEMCALDigit::GetDEParent(Int_t index) const
266 // retrieves the parent particle energy contribution
267 // given its index in the list
268 if ( (index <= fNiparent) && (index > 0)){
269 return fDEParent[index-1] ;
275 //____________________________________________________________________________
276 void AliEMCALDigit::ShiftPrimary(Int_t shift){
277 //shifts primary number to BIG offset, to separate primary in different TreeK
279 for(index = 0; index <fNprimary; index++ ){
280 fPrimary[index] = fPrimary[index]+ shift * 10000000 ;}
281 for(index =0; index <fNiparent; index++){
282 fIparent[index] = fIparent[index] + shift * 10000000 ;}
284 //____________________________________________________________________________
285 Bool_t AliEMCALDigit::operator==(AliEMCALDigit const & digit) const
287 // Two digits are equal if they have the same Id
289 if ( fId == digit.fId )
295 //____________________________________________________________________________
296 AliEMCALDigit AliEMCALDigit::operator+(const AliEMCALDigit &digit)
298 // Adds the amplitude of digits and completes the list of primary particles
299 // if amplitude is larger than
302 if(fTime > digit.fTime)
303 fTime = digit.fTime ;
304 if (digit.fTimeR < fTimeR)
305 fTimeR = digit.fTimeR ;
307 Int_t max1 = fNprimary ;
308 Int_t max2 = fNiparent ;
310 for (index = 0 ; index < digit.fNprimary ; index++){
311 Bool_t newPrim = kTRUE ;
313 for ( old = 0 ; (old < max1) && newPrim; old++) { //already have this primary?
314 if(fPrimary[old] == digit.fPrimary[index]) {
316 fDEPrimary[old] += digit.fDEPrimary[index];
320 if(max1<fNMaxPrimary){
321 fPrimary[max1] = digit.fPrimary[index] ;
322 fDEPrimary[max1] = digit.fDEPrimary[index] ;
326 if(fNprimary==fNMaxPrimary) {
328 TString mess = " NMaxPrimary = " ;
329 mess += fNMaxPrimary ;
330 mess += " is too small" ;
331 Fatal("AliEMCALDigit::Operator+ -->" , mess.Data()) ;
337 for (index = 0 ; index < digit.fNiparent ; index++){
338 Bool_t newParent = kTRUE ;
340 for ( old = 0 ; (old < max2) && newParent; old++) { //already have this primary?
341 if(fIparent[old] == digit.fIparent[index]) {
343 fDEParent[old] += digit.fDEParent[index];
347 if(max2<fNMaxiparent) {
348 fIparent[max2] = digit.fIparent[index] ;
349 fDEParent[max2] = digit.fDEParent[index] ;
353 if(fNiparent==fNMaxiparent) {
355 TString mess = " NMaxiparent = " ;
356 mess += fNMaxiparent ;
357 mess += " is too small" ;
358 Fatal("AliEMCALDigit::Operator+ -->", mess.Data()) ;
367 //____________________________________________________________________________
368 AliEMCALDigit AliEMCALDigit::operator*(Float_t factor)
370 // Multiplies the amplitude by a factor
372 Float_t tempo = static_cast<Float_t>(fAmp) ;
374 fAmp = static_cast<Int_t>(TMath::Ceil(tempo)) ;
375 for(Int_t i=0; i < fNprimary; i++)
376 fDEPrimary[i] *= factor;
377 for(Int_t i=0; i < fNiparent; i++)
378 fDEParent[i] *= factor;
383 //____________________________________________________________________________
384 ostream& operator << ( ostream& out , const AliEMCALDigit & digit)
386 // Prints the data of the digit
388 out << "ID " << digit.fId << " Energy = " << digit.fAmp << " Time = " << digit.fTime << endl ;
390 for(i=0;i<digit.fNprimary;i++)
391 out << "Primary " << i+1 << " = " << digit.fPrimary[i]
392 << " : DE " << digit.fDEPrimary[i] << endl ;
394 for(j=0;j<digit.fNiparent;j++)
395 out << "Iparent " << j+1 << " = " << digit.fIparent[j]
396 << " : DE " << digit.fDEParent[j] << endl ;
397 out << "Position in list = " << digit.fIndexInList << endl ;