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 ---
31 // --- Standard library ---
35 // --- AliRoot header files ---
37 #include "AliEMCALDigit.h"
38 #include "AliEMCALGeometry.h"
39 #include "AliEMCALGetter.h"
42 ClassImp(AliEMCALDigit)
44 //____________________________________________________________________________
45 AliEMCALDigit::AliEMCALDigit()
60 //____________________________________________________________________________
61 AliEMCALDigit::AliEMCALDigit(Int_t primary, Int_t iparent, Int_t id, Int_t DigEnergy, Float_t time, Int_t index)
67 fPrimary = new Int_t[fNMaxPrimary] ;
68 fIparent = new Int_t[fNMaxiparent] ;
72 fIndexInList = index ;
76 fPrimary[0] = primary ;
78 fIparent[0] = iparent ;
80 else{ //If the contribution of this primary smaller than fDigitThreshold (AliEMCALv1)
88 for ( i = 1; i < fNMaxPrimary ; i++)
91 for ( i =1; i< fNMaxiparent ; i++)
95 //____________________________________________________________________________
96 AliEMCALDigit::AliEMCALDigit(const AliEMCALDigit & digit)
101 fNMaxPrimary = digit.fNMaxPrimary ;
102 fNMaxiparent = digit.fNMaxiparent ;
103 fPrimary = new Int_t[fNMaxPrimary] ;
104 fIparent = new Int_t[fNMaxiparent] ;
106 for ( i = 0; i < fNMaxPrimary ; i++)
107 fPrimary[i] = digit.fPrimary[i] ;
109 for (j = 0; j< fNMaxiparent ; j++)
110 fIparent[j] = digit.fIparent[j] ;
112 fTime = digit.fTime ;
114 fMaxIter = digit.fMaxIter;
115 fIndexInList = digit.fIndexInList ;
116 fNprimary = digit.fNprimary ;
117 fNiparent = digit.fNiparent ;
120 //____________________________________________________________________________
121 AliEMCALDigit::~AliEMCALDigit()
123 // Delete array of primiries if any
128 //____________________________________________________________________________
129 Int_t AliEMCALDigit::Compare(const TObject * obj) const
131 // Compares two digits with respect to its Id
132 // to sort according increasing Id
136 AliEMCALDigit * digit = (AliEMCALDigit *)obj ;
138 Int_t iddiff = fId - digit->GetId() ;
142 else if ( iddiff < 0 )
151 //____________________________________________________________________________
152 const Float_t AliEMCALDigit::GetEta() const
154 Float_t eta=-10., phi=-10.;
156 const AliEMCALGeometry *g = AliEMCALGetter::GetInstance()->EMCALGeometry();
157 g->EtaPhiFromIndex(id,eta,phi);
161 //____________________________________________________________________________
162 const Float_t AliEMCALDigit::GetPhi() const
164 Float_t eta=-10., phi=-10.;
166 const AliEMCALGeometry *g = AliEMCALGetter::GetInstance()->EMCALGeometry();
167 g->EtaPhiFromIndex(id,eta,phi);
171 //____________________________________________________________________________
172 Int_t AliEMCALDigit::GetPrimary(Int_t index) const
174 // retrieves the primary particle number given its index in the list
176 if ( index <= fNprimary && index > 0){
177 rv = fPrimary[index-1] ;
184 //____________________________________________________________________________
185 Int_t AliEMCALDigit::GetIparent(Int_t index) const
187 // retrieves the primary particle number given its index in the list
189 if ( index <= fNiparent ){
190 rv = fIparent[index-1] ;
197 //______________________________________________________________________
198 const Bool_t AliEMCALDigit::IsInPreShower() const
201 const AliEMCALGeometry * geom = AliEMCALGetter::GetInstance()->EMCALGeometry() ;
202 if( GetId() > (geom->GetNZ() * geom->GetNPhi() ))
207 //____________________________________________________________________________
208 void AliEMCALDigit::ShiftPrimary(Int_t shift){
209 //shifts primary nimber to BIG offset, to separate primary in different TreeK
211 for(index = 0; index <fNprimary; index++ ){
212 fPrimary[index] = fPrimary[index]+ shift * 10000000 ;}
213 for(index =0; index <fNiparent; index++){
214 fIparent[index] = fIparent[index] + shift * 10000000 ;}
216 //____________________________________________________________________________
217 Bool_t AliEMCALDigit::operator==(AliEMCALDigit const & digit) const
219 // Two digits are equal if they have the same Id
221 if ( fId == digit.fId )
227 //____________________________________________________________________________
228 AliEMCALDigit& AliEMCALDigit::operator+(AliEMCALDigit const & digit)
230 // Adds the amplitude of digits and completes the list of primary particles
231 // if amplitude is larger than
234 if(fTime > digit.fTime)
235 fTime = digit.fTime ;
237 Int_t max1 = fNprimary ;
238 Int_t max2 = fNiparent ;
240 for (index = 0 ; index < digit.fNprimary ; index++){
241 Bool_t deja = kTRUE ;
243 for ( old = 0 ; (old < max1) && deja; old++) { //already have this primary?
244 if(fPrimary[old] == digit.fPrimary[index])
248 if(max1<fNMaxPrimary){ fPrimary[max1] = digit.fPrimary[index] ;
251 if(fNprimary==fNMaxPrimary) {
252 fNMaxPrimary += fMaxIter ;
253 Int_t * tempo = new Int_t[fNprimary] ;
255 for (i=0; i < fNprimary; i++)
256 tempo[i] = fPrimary[i] ;
258 fPrimary = new Int_t[fNMaxPrimary];
259 for (i=0; i < fNprimary; i++)
260 fPrimary[i] = tempo[i] ;
262 for (i=fNprimary; i < fNMaxPrimary; i++)
264 cout << "AliEMCALDigit >> NMaxPrimary has been increased to "<< fNMaxPrimary << endl ;
270 for (index = 0 ; index < digit.fNiparent ; index++){
271 Bool_t dejavu = kTRUE ;
273 for ( old = 0 ; (old < max2) && dejavu; old++) { //already have this primary?
274 if(fIparent[old] == digit.fIparent[index])
278 if(max2<fNMaxiparent){ fIparent[max2] = digit.fIparent[index] ;
281 if(fNiparent==fNMaxiparent) {
282 fNMaxiparent += fMaxIter ;
283 Int_t * tempo = new Int_t[fNiparent] ;
285 for (i=0; i < fNiparent; i++)
286 tempo[i] = fIparent[i] ;
288 fIparent = new Int_t[fNMaxiparent];
289 for (i=0; i < fNiparent; i++)
290 fIparent[i] = tempo[i] ;
292 for (i=fNiparent; i < fNMaxiparent; i++)
294 cout << "AliEMCALDigit >> Increasing fNMaxiparent to " << fNMaxiparent << endl ;
303 //____________________________________________________________________________
304 AliEMCALDigit& AliEMCALDigit::operator*(Float_t factor)
306 // Multiplies the amplitude by a factor
308 Float_t tempo = static_cast<Float_t>(fAmp) ;
310 fAmp = static_cast<Int_t>(TMath::Ceil(tempo)) ;
314 //____________________________________________________________________________
315 ostream& operator << ( ostream& out , const AliEMCALDigit & digit)
317 // Prints the data of the digit
319 out << "ID " << digit.fId << " Energy = " << digit.fAmp << " Time = " << digit.fTime << endl ;
321 for(i=0;i<digit.fNprimary;i++)
322 out << "Primary " << i+1 << " = " << digit.fPrimary[i] << endl ;
324 for(j=0;j<digit.fNiparent;j++)
325 out << "Iparent " << j+1 << " = " << digit.fIparent[j] << endl ;
326 out << "Position in list = " << digit.fIndexInList << endl ;