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 fDEPrimary = new Float_t[fNMaxPrimary] ;
62 fDEParent = new Float_t[fNMaxiparent] ;
63 for ( Int_t i = 0; i < fNMaxPrimary ; i++) {
67 for ( Int_t i = 0; i< fNMaxiparent ; i++) {
72 //____________________________________________________________________________
73 AliEMCALDigit::AliEMCALDigit(Int_t primary, Int_t iparent, Int_t id, Int_t DigEnergy, Float_t time, Int_t index, Float_t dE)
89 // data memebrs of the base class (AliNewDigit)
92 fIndexInList = index ;
95 fPrimary = new Int_t[fNMaxPrimary] ;
96 fDEPrimary = new Float_t[fNMaxPrimary] ;
97 fIparent = new Int_t[fNMaxiparent] ;
98 fDEParent = new Float_t[fNMaxiparent] ;
101 fPrimary[0] = primary ;
104 fIparent[0] = iparent ;
107 else{ //If the contribution of this primary smaller than fDigitThreshold (AliEMCALv1)
116 for ( i = 1; i < fNMaxPrimary ; i++) {
121 for ( i = 1; i< fNMaxiparent ; i++) {
127 //____________________________________________________________________________
128 AliEMCALDigit::AliEMCALDigit(const AliEMCALDigit & digit)
129 : AliDigitNew(digit),
130 fNprimary(digit.fNprimary),
131 fNMaxPrimary(digit.fNMaxPrimary),
134 fNiparent(digit.fNiparent),
135 fNMaxiparent(digit.fNMaxiparent),
138 fMaxIter(digit.fMaxIter),
144 // data memebrs of the base class (AliNewDigit)
147 fIndexInList = digit.fIndexInList ;
150 fPrimary = new Int_t[fNMaxPrimary] ;
151 fDEPrimary = new Float_t[fNMaxPrimary] ;
152 fIparent = new Int_t[fNMaxiparent] ;
153 fDEParent = new Float_t[fNMaxiparent] ;
155 for ( i = 0; i < fNMaxPrimary ; i++) {
156 fPrimary[i] = digit.fPrimary[i] ;
157 fDEPrimary[i] = digit.fDEPrimary[i] ;
160 for (j = 0; j< fNMaxiparent ; j++) {
161 fIparent[j] = digit.fIparent[j] ;
162 fDEParent[j] = digit.fDEParent[j] ;
166 //____________________________________________________________________________
167 AliEMCALDigit::~AliEMCALDigit()
169 // Delete array of primiries if any
171 delete [] fDEPrimary ;
173 delete [] fDEParent ;
176 //____________________________________________________________________________
177 Int_t AliEMCALDigit::Compare(const TObject * obj) const
179 // Compares two digits with respect to its Id
180 // to sort according increasing Id
184 AliEMCALDigit * digit = (AliEMCALDigit *)obj ;
186 Int_t iddiff = fId - digit->GetId() ;
190 else if ( iddiff < 0 )
199 //____________________________________________________________________________
200 Float_t AliEMCALDigit::GetEta() const
202 //return pseudorapidity for this digit
203 // should be change in EMCALGeometry - 19-nov-04
204 Float_t eta=-10., phi=-10.;
206 const AliEMCALGeometry *g = AliEMCALGeometry::GetInstance();
207 g->EtaPhiFromIndex(id,eta,phi);
211 //____________________________________________________________________________
212 Float_t AliEMCALDigit::GetPhi() const
214 //return phi coordinate of digit
215 // should be change in EMCALGeometry - 19-nov-04
216 Float_t eta=-10., phi=-10.;
218 const AliEMCALGeometry *g = AliEMCALGeometry::GetInstance();
219 g->EtaPhiFromIndex(id,eta,phi);
223 //____________________________________________________________________________
224 Int_t AliEMCALDigit::GetPrimary(Int_t index) const
226 // retrieves the primary particle number given its index in the list
227 if ( (index <= fNprimary) && (index > 0)){
228 return fPrimary[index-1] ;
234 //____________________________________________________________________________
235 Float_t AliEMCALDigit::GetDEPrimary(Int_t index) const
237 // retrieves the primary particle energy contribution
238 // given its index in the list
239 if ( (index <= fNprimary) && (index > 0)){
240 return fDEPrimary[index-1] ;
247 //____________________________________________________________________________
248 Int_t AliEMCALDigit::GetIparent(Int_t index) const
250 // retrieves the primary particle number given its index in the list
251 if ( index <= fNiparent && index > 0){
252 return fIparent[index-1] ;
259 //____________________________________________________________________________
260 Float_t AliEMCALDigit::GetDEParent(Int_t index) const
262 // retrieves the parent particle energy contribution
263 // given its index in the list
264 if ( (index <= fNiparent) && (index > 0)){
265 return fDEParent[index-1] ;
271 //____________________________________________________________________________
272 void AliEMCALDigit::ShiftPrimary(Int_t shift){
273 //shifts primary number to BIG offset, to separate primary in different TreeK
275 for(index = 0; index <fNprimary; index++ ){
276 fPrimary[index] = fPrimary[index]+ shift * 10000000 ;}
277 for(index =0; index <fNiparent; index++){
278 fIparent[index] = fIparent[index] + shift * 10000000 ;}
280 //____________________________________________________________________________
281 Bool_t AliEMCALDigit::operator==(AliEMCALDigit const & digit) const
283 // Two digits are equal if they have the same Id
285 if ( fId == digit.fId )
291 //____________________________________________________________________________
292 AliEMCALDigit AliEMCALDigit::operator+(const AliEMCALDigit &digit)
294 // Adds the amplitude of digits and completes the list of primary particles
295 // if amplitude is larger than
298 if(fTime > digit.fTime)
299 fTime = digit.fTime ;
300 if (digit.fTimeR < fTimeR)
301 fTimeR = digit.fTimeR ;
303 Int_t max1 = fNprimary ;
304 Int_t max2 = fNiparent ;
306 for (index = 0 ; index < digit.fNprimary ; index++){
307 Bool_t newPrim = kTRUE ;
309 for ( old = 0 ; (old < max1) && newPrim; old++) { //already have this primary?
310 if(fPrimary[old] == digit.fPrimary[index]) {
312 fDEPrimary[old] += digit.fDEPrimary[index];
316 if(max1<fNMaxPrimary){
317 fPrimary[max1] = digit.fPrimary[index] ;
318 fDEPrimary[max1] = digit.fDEPrimary[index] ;
322 if(fNprimary==fNMaxPrimary) {
324 TString mess = " NMaxPrimary = " ;
325 mess += fNMaxPrimary ;
326 mess += " is too small" ;
327 Fatal("AliEMCALDigit::Operator+ -->" , mess.Data()) ;
333 for (index = 0 ; index < digit.fNiparent ; index++){
334 Bool_t newParent = kTRUE ;
336 for ( old = 0 ; (old < max2) && newParent; old++) { //already have this primary?
337 if(fIparent[old] == digit.fIparent[index]) {
339 fDEParent[old] += digit.fDEParent[index];
343 if(max2<fNMaxiparent) {
344 fIparent[max2] = digit.fIparent[index] ;
345 fDEParent[max2] = digit.fDEParent[index] ;
349 if(fNiparent==fNMaxiparent) {
351 TString mess = " NMaxiparent = " ;
352 mess += fNMaxiparent ;
353 mess += " is too small" ;
354 Fatal("AliEMCALDigit::Operator+ -->", mess.Data()) ;
363 //____________________________________________________________________________
364 AliEMCALDigit AliEMCALDigit::operator*(Float_t factor)
366 // Multiplies the amplitude by a factor
368 Float_t tempo = static_cast<Float_t>(fAmp) ;
370 fAmp = static_cast<Int_t>(TMath::Ceil(tempo)) ;
371 for(Int_t i=0; i < fNprimary; i++)
372 fDEPrimary[i] *= factor;
373 for(Int_t i=0; i < fNiparent; i++)
374 fDEParent[i] *= factor;
379 //____________________________________________________________________________
380 ostream& operator << ( ostream& out , const AliEMCALDigit & digit)
382 // Prints the data of the digit
384 out << "ID " << digit.fId << " Energy = " << digit.fAmp << " Time = " << digit.fTime << endl ;
386 for(i=0;i<digit.fNprimary;i++)
387 out << "Primary " << i+1 << " = " << digit.fPrimary[i]
388 << " : DE " << digit.fDEPrimary[i] << endl ;
390 for(j=0;j<digit.fNiparent;j++)
391 out << "Iparent " << j+1 << " = " << digit.fIparent[j]
392 << " : DE " << digit.fDEParent[j] << endl ;
393 out << "Position in list = " << digit.fIndexInList << endl ;