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 ---
33 #include <Riostream.h>
35 // --- AliRoot header files ---
37 #include "AliEMCALDigit.h"
38 #include "AliEMCALGeometry.h"
40 ClassImp(AliEMCALDigit)
42 //____________________________________________________________________________
43 AliEMCALDigit::AliEMCALDigit() :
60 //____________________________________________________________________________
61 AliEMCALDigit::AliEMCALDigit(Int_t primary, Int_t iparent, Int_t id, Int_t DigEnergy, Float_t time, Int_t index)
75 // data memebrs of the base class (AliNewDigit)
78 fIndexInList = index ;
81 fPrimary = new Int_t[fNMaxPrimary] ;
82 fIparent = new Int_t[fNMaxiparent] ;
85 fPrimary[0] = primary ;
87 fIparent[0] = iparent ;
89 else{ //If the contribution of this primary smaller than fDigitThreshold (AliEMCALv1)
97 for ( i = 1; i < fNMaxPrimary ; i++)
100 for ( i =1; i< fNMaxiparent ; i++)
104 //____________________________________________________________________________
105 AliEMCALDigit::AliEMCALDigit(const AliEMCALDigit & digit)
106 : AliDigitNew(digit),
107 fNprimary(digit.fNprimary),
108 fNMaxPrimary(digit.fNMaxPrimary),
110 fNiparent(digit.fNiparent),
111 fNMaxiparent(digit.fNMaxiparent),
113 fMaxIter(digit.fMaxIter),
119 // data memebrs of the base class (AliNewDigit)
122 fIndexInList = digit.fIndexInList ;
125 fPrimary = new Int_t[fNMaxPrimary] ;
126 fIparent = new Int_t[fNMaxiparent] ;
128 for ( i = 0; i < fNMaxPrimary ; i++)
129 fPrimary[i] = digit.fPrimary[i] ;
131 for (j = 0; j< fNMaxiparent ; j++)
132 fIparent[j] = digit.fIparent[j] ;
135 //____________________________________________________________________________
136 AliEMCALDigit::~AliEMCALDigit()
138 // Delete array of primiries if any
143 //____________________________________________________________________________
144 Int_t AliEMCALDigit::Compare(const TObject * obj) const
146 // Compares two digits with respect to its Id
147 // to sort according increasing Id
151 AliEMCALDigit * digit = (AliEMCALDigit *)obj ;
153 Int_t iddiff = fId - digit->GetId() ;
157 else if ( iddiff < 0 )
166 //____________________________________________________________________________
167 Float_t AliEMCALDigit::GetEta() const
169 //return pseudorapidity for this digit
170 // should be change in EMCALGeometry - 19-nov-04
171 Float_t eta=-10., phi=-10.;
173 const AliEMCALGeometry *g = AliEMCALGeometry::GetInstance();
174 g->EtaPhiFromIndex(id,eta,phi);
178 //____________________________________________________________________________
179 Float_t AliEMCALDigit::GetPhi() const
181 //return phi coordinate of digit
182 // should be change in EMCALGeometry - 19-nov-04
183 Float_t eta=-10., phi=-10.;
185 const AliEMCALGeometry *g = AliEMCALGeometry::GetInstance();
186 g->EtaPhiFromIndex(id,eta,phi);
190 //____________________________________________________________________________
191 Int_t AliEMCALDigit::GetPrimary(Int_t index) const
193 // retrieves the primary particle number given its index in the list
195 if ( (index <= fNprimary) && (index > 0)){
196 rv = fPrimary[index-1] ;
203 //____________________________________________________________________________
204 Int_t AliEMCALDigit::GetIparent(Int_t index) const
206 // retrieves the primary particle number given its index in the list
208 if ( index <= fNiparent ){
209 rv = fIparent[index-1] ;
216 //____________________________________________________________________________
217 void AliEMCALDigit::ShiftPrimary(Int_t shift){
218 //shifts primary number to BIG offset, to separate primary in different TreeK
220 for(index = 0; index <fNprimary; index++ ){
221 fPrimary[index] = fPrimary[index]+ shift * 10000000 ;}
222 for(index =0; index <fNiparent; index++){
223 fIparent[index] = fIparent[index] + shift * 10000000 ;}
225 //____________________________________________________________________________
226 Bool_t AliEMCALDigit::operator==(AliEMCALDigit const & digit) const
228 // Two digits are equal if they have the same Id
230 if ( fId == digit.fId )
236 //____________________________________________________________________________
237 AliEMCALDigit AliEMCALDigit::operator+(const AliEMCALDigit &digit)
239 // Adds the amplitude of digits and completes the list of primary particles
240 // if amplitude is larger than
243 if(fTime > digit.fTime)
244 fTime = digit.fTime ;
247 Int_t max1 = fNprimary ;
248 Int_t max2 = fNiparent ;
250 for (index = 0 ; index < digit.fNprimary ; index++){
251 Bool_t deja = kTRUE ;
253 for ( old = 0 ; (old < max1) && deja; old++) { //already have this primary?
254 if(fPrimary[old] == digit.fPrimary[index])
258 if(max1<fNMaxPrimary){ fPrimary[max1] = digit.fPrimary[index] ;
261 if(fNprimary==fNMaxPrimary) {
263 TString mess = " NMaxPrimary = " ;
264 mess += fNMaxPrimary ;
265 mess += " is too small" ;
266 Fatal("AliEMCALDigit::Operator+ -->" , mess.Data()) ;
272 for (index = 0 ; index < digit.fNiparent ; index++){
273 Bool_t dejavu = kTRUE ;
275 for ( old = 0 ; (old < max2) && dejavu; old++) { //already have this primary?
276 if(fIparent[old] == digit.fIparent[index])
280 if(max2<fNMaxiparent){ fIparent[max2] = digit.fIparent[index] ;
283 if(fNiparent==fNMaxiparent) {
285 TString mess = " NMaxiparent = " ;
286 mess += fNMaxiparent ;
287 mess += " is too small" ;
288 Fatal("AliEMCALDigit::Operator+ -->", mess.Data()) ;
297 //____________________________________________________________________________
298 AliEMCALDigit AliEMCALDigit::operator*(Float_t factor)
300 // Multiplies the amplitude by a factor
302 Float_t tempo = static_cast<Float_t>(fAmp) ;
304 fAmp = static_cast<Int_t>(TMath::Ceil(tempo)) ;
308 //____________________________________________________________________________
309 ostream& operator << ( ostream& out , const AliEMCALDigit & digit)
311 // Prints the data of the digit
313 out << "ID " << digit.fId << " Energy = " << digit.fAmp << " Time = " << digit.fTime << endl ;
315 for(i=0;i<digit.fNprimary;i++)
316 out << "Primary " << i+1 << " = " << digit.fPrimary[i] << endl ;
318 for(j=0;j<digit.fNiparent;j++)
319 out << "Iparent " << j+1 << " = " << digit.fIparent[j] << endl ;
320 out << "Position in list = " << digit.fIndexInList << endl ;