/**************************************************************************
* 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>
// --- AliRoot header files ---
#include "AliPHOSDigit.h"
ClassImp(AliPHOSDigit)
//____________________________________________________________________________
AliPHOSDigit::AliPHOSDigit()
{
// default ctor
fNprimary = 0 ;
fPrimary1 = -1 ;
fPrimary2 = -1 ;
fPrimary3 = -1 ;
}
//____________________________________________________________________________
AliPHOSDigit::AliPHOSDigit(Int_t primary, Int_t id, Int_t DigEnergy)
{
// ctor with all data
fId = id ;
fAmp = DigEnergy ;
fPrimary1 = primary ;
fNprimary = 1 ;
}
//____________________________________________________________________________
AliPHOSDigit::AliPHOSDigit(const AliPHOSDigit & digit)
{
// copy ctor
fId = digit.fId;
fAmp = digit.fAmp ;
fNprimary = digit.fNprimary ;
fPrimary1 = digit.fPrimary1 ;
fPrimary2 = digit.fPrimary2 ;
fPrimary3 = digit.fPrimary3 ;
}
//____________________________________________________________________________
Int_t AliPHOSDigit::Compare(TObject * obj)
{
// 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
{
// Returns the primary particle id index =1,2,3
Int_t rv = -1 ;
if ( index > 3 )
cout << "AliPHOSDigit ERROR > only 3 primaries allowed" << endl ;
else {
switch (index) {
case 1 :
rv = fPrimary1 ;
break ;
case 2 :
rv = fPrimary2 ;
break ;
case 3 :
rv = fPrimary3 ;
break ;
}
}
return rv ;
}
//____________________________________________________________________________
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
fAmp += digit.fAmp ;
// Here comes something crummy ... but I do not know how to stream pointers
// because AliPHOSDigit is in a TCLonesArray
Int_t tempo1[3] ;
tempo1[0] = fPrimary1 ;
tempo1[1] = fPrimary2 ;
tempo1[2] = fPrimary3 ;
Int_t tempo2[3] ;
tempo2[0] = digit.fPrimary1 ;
tempo2[1] = digit.fPrimary2 ;
tempo2[2] = digit.fPrimary3 ;
Int_t max1 = fNprimary ;
Int_t max2 = digit.fNprimary ;
if ( fNprimary >= 3 ) {
cout << "AliPHOSDigit + operator ERROR > too many primaries, modify AliPHOSDigit" << endl ;
}
else {
fNprimary += digit.fNprimary ;
if ( fNprimary > 3 ) {
cout << "AliPHOSDigit + operator ERROR > too many primaries, modify AliPHOSDigit" << endl ;
fNprimary = 3 ;
}
Int_t tempo3[3] ;
Int_t index ;
for (index = 0 ; index < max1 ; index++)
tempo3[index] = tempo1[index] ;
for (index = 0 ; index < max2 ; index++)
tempo3[index+max1] = tempo2[index] ;
fPrimary1 = tempo3[0] ;
fPrimary2 = tempo3[1] ;
fPrimary3 = tempo3[2] ;
}
// end of crummy stuff
return *this ;
}
//____________________________________________________________________________
ostream& operator << ( ostream& out , const AliPHOSDigit & digit)
{
// Prints the data of the digit
out << "ID " << digit.fId << " Energy = " << digit.fAmp << endl
<< "Primary 1 = " << digit.fPrimary1 << endl
<< "Primary 2 = " << digit.fPrimary2 << endl
<< "Primary 3 = " << digit.fPrimary3 << endl ;
return out ;
}
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