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 //_________________________________________________________________________
21 // 3 identifiers for the primary particle(s) at the origine of the digit
22 // The digits are made in FinishEvent() by summing all the hits in a single PHOS crystal or PPSD gas cell
24 //*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC KI & SUBATECH)
27 // --- ROOT system ---
29 // --- Standard library ---
33 // --- AliRoot header files ---
35 #include "AliPHOSDigit.h"
38 ClassImp(AliPHOSDigit)
40 //____________________________________________________________________________
41 AliPHOSDigit::AliPHOSDigit()
48 fShiftOffset = 10000000 ;
51 //____________________________________________________________________________
52 AliPHOSDigit::AliPHOSDigit(Int_t primary, Int_t id, Int_t digEnergy, Float_t time, Int_t index)
60 fIndexInList = index ;
61 fShiftOffset = 10000000 ;
64 fPrimary[0] = primary ;
66 else{ //If the contribution of this primary smaller than fDigitThreshold (AliPHOSv1)
71 for ( i = 1; i < fNMaxPrimary ; i++)
75 //____________________________________________________________________________
76 AliPHOSDigit::AliPHOSDigit(const AliPHOSDigit & digit)
81 fNMaxPrimary = digit.fNMaxPrimary ;
83 fShiftOffset = 10000000 ;
84 for ( i = 0; i < fNMaxPrimary ; i++)
85 fPrimary[i] = digit.fPrimary[i] ;
89 fIndexInList = digit.fIndexInList ;
90 fNprimary = digit.fNprimary ;
93 //____________________________________________________________________________
94 AliPHOSDigit::~AliPHOSDigit()
96 // Delete array of primiries if any
100 //____________________________________________________________________________
101 Int_t AliPHOSDigit::Compare(const TObject * obj) const
103 // Compares two digits with respect to its Id
104 // to sort according increasing Id
108 AliPHOSDigit * digit = (AliPHOSDigit *)obj ;
110 Int_t iddiff = fId - digit->GetId() ;
114 else if ( iddiff < 0 )
123 //____________________________________________________________________________
124 Int_t AliPHOSDigit::GetPrimary(Int_t index) const
126 // retrieves the primary particle number given its index in the list
128 if ( index <= fNprimary && index > 0){
129 rv = fPrimary[index-1] ;
135 //____________________________________________________________________________
136 void AliPHOSDigit::Print(Option_t *option) const
138 printf("PHOS digit: Amp=%d, Id=%d\n",fAmp,fId);
140 //____________________________________________________________________________
141 void AliPHOSDigit::ShiftPrimary(Int_t shift)
143 //shifts primary number to BIG offset, to separate primary in different TreeK
145 for(index = 0; index <fNprimary; index ++ ){
146 fPrimary[index] = fPrimary[index]+ shift * fShiftOffset ;
149 //____________________________________________________________________________
150 Bool_t AliPHOSDigit::operator==(AliPHOSDigit const & digit) const
152 // Two digits are equal if they have the same Id
154 if ( fId == digit.fId )
160 //____________________________________________________________________________
161 AliPHOSDigit& AliPHOSDigit::operator+(AliPHOSDigit const & digit)
163 // Adds the amplitude of digits and completes the list of primary particles
164 // if amplitude is larger than
167 if(fTime > digit.fTime)
168 fTime = digit.fTime ;
170 Int_t max1 = fNprimary ;
173 for (index = 0 ; index < digit.fNprimary ; index++){
174 Bool_t deja = kTRUE ;
176 for ( old = 0 ; (old < max1) && deja; old++) { //already have this primary?
177 if(fPrimary[old] == (digit.fPrimary)[index])
181 fPrimary[fNprimary] = (digit.fPrimary)[index] ;
183 if(fNprimary>fNMaxPrimary) {
184 cout << "AliPHOSDigit >> Increase NMaxPrimary "<< endl ;
193 //____________________________________________________________________________
194 ostream& operator << ( ostream& out , const AliPHOSDigit & digit)
196 // Prints the data of the digit
198 out << "ID " << digit.fId << " Energy = " << digit.fAmp << " Time = " << digit.fTime << endl ;
200 for(i=0;i<digit.fNprimary;i++)
201 out << "Primary " << i+1 << " = " << digit.fPrimary[i] << endl ;
202 out << "Position in list = " << digit.fIndexInList << endl ;