EvtSecondary.cc

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 1998      Caltech, UCSB
//
// Module: EvtSecondary.cc
//
// Description: Class to store the decays of the secondary particles.
//
// Modification history:
//
//    RYD       March 12, 1998       Module created
//
//------------------------------------------------------------------------
//
#include "EvtSecondary.hh"
#include "EvtPDL.hh"
#include "EvtParticle.hh"
#include "EvtPatches.hh"
#include "EvtReport.hh"
#include <iostream>
using std::endl;
using std::ostream;
 
void EvtSecondary::init() { _npart = 0; }
 
int EvtSecondary::getNPart() { return _npart; }
 
void EvtSecondary::createSecondary( int stdhepindex, EvtParticle* prnt ) {
 
  _stdhepindex[_npart] = stdhepindex;
  if ( prnt->getNDaug() == 0 )
  {
    _id1[_npart] = 0;
    _id2[_npart] = 0;
    _id3[_npart] = 0;
    _npart++;
    return;
  }
  if ( prnt->getNDaug() == 1 )
  {
    _id1[_npart] = EvtPDL::getStdHep( prnt->getDaug( 0 )->getId() );
    _id2[_npart] = 0;
    _id3[_npart] = 0;
    _npart++;
    return;
  }
  if ( prnt->getNDaug() == 2 )
  {
    _id1[_npart] = EvtPDL::getStdHep( prnt->getDaug( 0 )->getId() );
    _id2[_npart] = EvtPDL::getStdHep( prnt->getDaug( 1 )->getId() );
    _id3[_npart] = 0;
    _npart++;
    return;
  }
  if ( prnt->getNDaug() == 3 )
  {
    _id1[_npart] = EvtPDL::getStdHep( prnt->getDaug( 0 )->getId() );
    _id2[_npart] = EvtPDL::getStdHep( prnt->getDaug( 1 )->getId() );
    _id3[_npart] = EvtPDL::getStdHep( prnt->getDaug( 2 )->getId() );
    _npart++;
    return;
  }
 
  report( ERROR, "EvtGen" ) << "More than 3 decay products in a secondary particle!" << endl;
}
 
ostream& operator<<( ostream& s, const EvtSecondary& secondary ) {
 
  s << endl;
  s << "Secondary decays:" << endl;
 
  int i;
  for ( i = 0; i < secondary._npart; i++ )
  {
 
    report( INFO, "EvtGen" ) << i << " " << secondary._stdhepindex[i] << " "
                             << secondary._id1[i] << " " << secondary._id2[i] << " "
                             << secondary._id3[i] << endl;
  }
 
  s << endl;
 
  return s;
}