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()
53 fNMaxiparent = 40; //fNMaxPrimary*10;
54 fPrimary = new Int_t[fNMaxPrimary] ;
55 fIparent = new Int_t[fNMaxiparent] ;
58 //____________________________________________________________________________
59 AliEMCALDigit::AliEMCALDigit(Int_t primary, Int_t iparent, Int_t id, Int_t DigEnergy, Float_t time, Int_t index)
64 fNMaxiparent = 40 ; //fNMaxPrimary*10;
65 fPrimary = new Int_t[fNMaxPrimary] ;
66 fIparent = new Int_t[fNMaxiparent] ;
70 fIndexInList = index ;
73 fPrimary[0] = primary ;
75 fIparent[0] = iparent ;
77 else{ //If the contribution of this primary smaller than fDigitThreshold (AliEMCALv1)
85 for ( i = 1; i < fNMaxPrimary ; i++)
88 for ( i =1; i< fNMaxiparent ; i++)
92 //____________________________________________________________________________
93 AliEMCALDigit::AliEMCALDigit(const AliEMCALDigit & digit)
98 fNMaxPrimary = digit.fNMaxPrimary ;
99 fNMaxiparent = digit.fNMaxiparent ;
100 fPrimary = new Int_t[fNMaxPrimary] ;
101 fIparent = new Int_t[fNMaxiparent] ;
103 for ( i = 0; i < fNMaxPrimary ; i++)
104 fPrimary[i] = digit.fPrimary[i] ;
106 for (j = 0; j< fNMaxiparent ; j++)
107 fIparent[j] = digit.fIparent[j] ;
109 fTime = digit.fTime ;
111 fIndexInList = digit.fIndexInList ;
112 fNprimary = digit.fNprimary ;
113 fNiparent = digit.fNiparent ;
116 //____________________________________________________________________________
117 AliEMCALDigit::~AliEMCALDigit()
119 // Delete array of primiries if any
124 //____________________________________________________________________________
125 Int_t AliEMCALDigit::Compare(const TObject * obj) const
127 // Compares two digits with respect to its Id
128 // to sort according increasing Id
132 AliEMCALDigit * digit = (AliEMCALDigit *)obj ;
134 Int_t iddiff = fId - digit->GetId() ;
138 else if ( iddiff < 0 )
147 //____________________________________________________________________________
148 const Float_t AliEMCALDigit::GetEta() const
150 Float_t eta=-10., phi=-10.;
152 const AliEMCALGeometry *g = AliEMCALGetter::GetInstance()->EMCALGeometry();
153 g->EtaPhiFromIndex(id,eta,phi);
157 //____________________________________________________________________________
158 const Float_t AliEMCALDigit::GetPhi() const
160 Float_t eta=-10., phi=-10.;
162 const AliEMCALGeometry *g = AliEMCALGetter::GetInstance()->EMCALGeometry();
163 g->EtaPhiFromIndex(id,eta,phi);
167 //____________________________________________________________________________
168 Int_t AliEMCALDigit::GetPrimary(Int_t index) const
170 // retrieves the primary particle number given its index in the list
172 if ( index <= fNprimary && index > 0){
173 rv = fPrimary[index-1] ;
180 //____________________________________________________________________________
181 Int_t AliEMCALDigit::GetIparent(Int_t index) const
183 // retrieves the primary particle number given its index in the list
185 if ( index <= fNiparent ){
186 rv = fIparent[index-1] ;
193 //______________________________________________________________________
194 const Bool_t AliEMCALDigit::IsInPreShower() const
197 const AliEMCALGeometry * geom = AliEMCALGetter::GetInstance()->EMCALGeometry() ;
198 if( GetId() > (geom->GetNZ() * geom->GetNPhi() ))
203 //____________________________________________________________________________
204 void AliEMCALDigit::ShiftPrimary(Int_t shift){
205 //shifts primary nimber to BIG offset, to separate primary in different TreeK
207 for(index = 0; index <fNprimary; index++ ){
208 fPrimary[index] = fPrimary[index]+ shift * 10000000 ;}
209 for(index =0; index <fNiparent; index++){
210 fIparent[index] = fIparent[index] + shift * 10000000 ;}
212 //____________________________________________________________________________
213 Bool_t AliEMCALDigit::operator==(AliEMCALDigit const & digit) const
215 // Two digits are equal if they have the same Id
217 if ( fId == digit.fId )
223 //____________________________________________________________________________
224 AliEMCALDigit& AliEMCALDigit::operator+(AliEMCALDigit const & digit)
226 // Adds the amplitude of digits and completes the list of primary particles
227 // if amplitude is larger than
230 if(fTime > digit.fTime)
231 fTime = digit.fTime ;
233 Int_t max1 = fNprimary ;
234 Int_t max2 = fNiparent ;
236 for (index = 0 ; index < digit.fNprimary ; index++){
237 Bool_t deja = kTRUE ;
239 for ( old = 0 ; (old < max1) && deja; old++) { //already have this primary?
240 if(fPrimary[old] == digit.fPrimary[index])
244 if(max1<fNMaxPrimary){ fPrimary[max1] = digit.fPrimary[index] ;
247 if(fNprimary==fNMaxPrimary) {
249 for (printindex = 0 ; printindex < max1 ; printindex++)
250 cout << "printindex = " << printindex << " primary = " << fPrimary[printindex];
252 cout << "AliEMCALDigit >> Increase NMaxPrimary "<< endl ;
258 for (index = 0 ; index < digit.fNiparent ; index++){
259 Bool_t dejavu = kTRUE ;
261 for ( old = 0 ; (old < max2) && dejavu; old++) { //already have this primary?
262 if(fIparent[old] == digit.fIparent[index])
266 if(max2<fNMaxiparent){ fIparent[max2] = digit.fIparent[index] ;
269 if(fNiparent==fNMaxiparent) {
271 for (printindex = 0 ; printindex < max2 ; printindex++)
272 cout << "printindex = " << printindex << " parent = " << fIparent[printindex];
274 cout << "AliEMCALDigit >> Increase NMaxiparent "<< endl ;
283 //____________________________________________________________________________
284 AliEMCALDigit& AliEMCALDigit::operator*(Float_t factor)
286 // Multiplies the amplitude by a factor
288 Float_t tempo = static_cast<Float_t>(fAmp) ;
290 fAmp = static_cast<Int_t>(TMath::Ceil(tempo)) ;
294 //____________________________________________________________________________
295 ostream& operator << ( ostream& out , const AliEMCALDigit & digit)
297 // Prints the data of the digit
299 out << "ID " << digit.fId << " Energy = " << digit.fAmp << " Time = " << digit.fTime << endl ;
301 for(i=0;i<digit.fNprimary;i++)
302 out << "Primary " << i+1 << " = " << digit.fPrimary[i] << endl ;
304 for(j=0;j<digit.fNiparent;j++)
305 out << "Iparent " << j+1 << " = " << digit.fIparent[j] << endl ;
306 out << "Position in list = " << digit.fIndexInList << endl ;