/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation strictly for non-commercial purposes is hereby granted *
* without fee, provided that the above copyright notice appears in all *
* copies and that both the copyright notice and this permission notice *
* appear in the supporting documentation. The authors make no claims *
* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
/* $Id$ */
//_________________________________________________________________________
// PHOS digit: Id
// energy
// 3 identifiers for the primary particle(s) at the origine of the digit
// The digits are made in FinishEvent() by summing all the hits in a single PHOS crystal or PPSD gas cell
// It would be nice to replace the 3 identifiers by an array, but, because digits are kept in a TClonesQArray,
// it is not possible to stream such an array... (beyond my understqnding!)
//
//*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH)
// --- ROOT system ---
// --- Standard library ---
#include <iostream.h>
// --- AliRoot header files ---
#include "AliPHOSDigit.h"
ClassImp(AliPHOSDigit)
//____________________________________________________________________________
AliPHOSDigit::AliPHOSDigit()
{
// default ctor
fIndexInList = -1 ;
fNprimary = 0 ;
fNMaxPrimary = 5 ;
}
//____________________________________________________________________________
AliPHOSDigit::AliPHOSDigit(Int_t primary, Int_t id, Int_t DigEnergy, Int_t index)
{
// ctor with all data
fNMaxPrimary = 5 ;
fAmp = DigEnergy ;
fId = id ;
fIndexInList = index ;
if( primary != -1){
fNprimary = 1 ;
fPrimary[0] = primary ;
}
else{ //If the contribution of this primary smaller than fDigitThreshold (AliPHOSv1)
fNprimary = 0 ;
fPrimary[0] = -1 ;
}
Int_t i ;
for ( i = 1; i < fNMaxPrimary ; i++)
fPrimary[i] = -1 ;
}
//____________________________________________________________________________
AliPHOSDigit::AliPHOSDigit(const AliPHOSDigit & digit)
{
// copy ctor
fNMaxPrimary = digit.fNMaxPrimary ;
Int_t i ;
for ( i = 0; i < fNMaxPrimary ; i++)
fPrimary[i] = digit.fPrimary[i] ;
fAmp = digit.fAmp ;
fId = digit.fId;
fIndexInList = digit.fIndexInList ;
fNprimary = digit.fNprimary ;
}
//____________________________________________________________________________
AliPHOSDigit::~AliPHOSDigit()
{
// Delete array of primiries if any
}
//____________________________________________________________________________
Int_t AliPHOSDigit::Compare(const TObject * obj) const
{
// Compares two digits with respect to its Id
// to sort according increasing Id
Int_t rv ;
AliPHOSDigit * digit = (AliPHOSDigit *)obj ;
Int_t iddiff = fId - digit->GetId() ;
if ( iddiff > 0 )
rv = 1 ;
else if ( iddiff < 0 )
rv = -1 ;
else
rv = 0 ;
return rv ;
}
//____________________________________________________________________________
Int_t AliPHOSDigit::GetPrimary(Int_t index) const
{
// retrieves the primary particle number given its index in the list
Int_t rv = -1 ;
if ( index <= fNprimary ){
rv = fPrimary[index-1] ;
}
return rv ;
}
//____________________________________________________________________________
void AliPHOSDigit::ShiftPrimary(Int_t shift){
//shifts primary nimber to BIG offset, to separate primary in different TreeK
Int_t index ;
for(index = 0; index <fNprimary; index ++ ){
fPrimary[index] = fPrimary[index]+ shift * 10000000 ;
}
}
//____________________________________________________________________________
Bool_t AliPHOSDigit::operator==(AliPHOSDigit const & digit) const
{
// Two digits are equal if they have the same Id
if ( fId == digit.fId )
return kTRUE ;
else
return kFALSE ;
}
//____________________________________________________________________________
AliPHOSDigit& AliPHOSDigit::operator+(AliPHOSDigit const & digit)
{
// Adds the amplitude of digits and completes the list of primary particles
// if amplitude is larger than
fAmp += digit.fAmp ;
Int_t max1 = fNprimary ;
Int_t index ;
for (index = 0 ; index < digit.fNprimary ; index++){
Bool_t deja = kTRUE ;
Int_t old ;
for ( old = 0 ; (old < max1) && deja; old++) { //already have this primary?
if(fPrimary[old] == (digit.fPrimary)[index])
deja = kFALSE;
}
if(deja){
fPrimary[fNprimary] = (digit.fPrimary)[index] ;
fNprimary++ ;
if(fNprimary>fNMaxPrimary) {
cout << "AliPHOSDigit >> Increase NMaxPrimary "<< endl ;
return *this ;
}
}
}
return *this ;
}
//____________________________________________________________________________
ostream& operator << ( ostream& out , const AliPHOSDigit & digit)
{
// Prints the data of the digit
out << "ID " << digit.fId << " Energy = " << digit.fAmp << endl ;
Int_t i ;
for(i=0;i<digit.fNprimary;i++)
out << "Primary " << i+1 << " = " << digit.fPrimary[i] << endl ;
out << "Position in list = " << digit.fIndexInList << endl ;
return out ;
}
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