EvtStdHep.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: EvtStdHep.cc
//
// Description: Class produce the StdHep representation of the decay.
//
// Modification history:
//
//    RYD       March 11, 1998       Module created
//
//------------------------------------------------------------------------
#include "EvtPatches.hh"
 
#include "EvtStdHep.hh"
#include "EvtVector4R.hh"
#include <iomanip>
#include <iostream>
using std::endl;
using std::ios;
using std::ostream;
using std::setiosflags;
 
// typedef long ios::fmtflags;
 
void EvtStdHep::init() { _npart = 0; }
 
int EvtStdHep::getNPart() { return _npart; }
 
void EvtStdHep::createParticle( EvtVector4R p4, EvtVector4R x, int prntfirst, int prntlast,
                                int id ) {
 
  _p4[_npart]        = p4;
  _x[_npart]         = x;
  _prntfirst[_npart] = prntfirst;
  _prntlast[_npart]  = prntlast;
  _daugfirst[_npart] = -1;
  _dauglast[_npart]  = -1;
  _id[_npart]        = id;
  _istat[_npart]     = 1;
 
  // we also need to fix up the parents pointer to the daughter!
 
  if ( prntfirst >= 0 )
  {
    int i;
    for ( i = prntfirst; i <= prntlast; i++ )
    {
      _istat[i] = 2;
      if ( _daugfirst[i] == -1 ) _daugfirst[i] = _npart;
      if ( _dauglast[i] < _npart ) _dauglast[i] = _npart;
    }
  }
 
  _npart++;
}
 
void EvtStdHep::translate( EvtVector4R d ) {
 
  int i;
  for ( i = 0; i < _npart; i++ ) { _x[i] += d; }
}
 
ostream& operator<<( ostream& s, const EvtStdHep& stdhep ) {
 
  int           w = s.width();
  int           p = s.precision();
  ios::fmtflags f = s.flags();
 
  s << endl;
  s << "  N      Id Ist   M1   M2   DF   DL      px      py      pz       E       t       x   "
       "    y       z"
    << endl;
  int i;
  for ( i = 0; i < stdhep._npart; i++ )
  {
 
    s.width( 3 );
    s << i << " ";
    s.width( 7 );
    s << stdhep._id[i] << " ";
    s.width( 3 );
    s << stdhep._istat[i] << " ";
    s.width( 4 );
    s << stdhep._prntfirst[i] << " ";
    s.width( 4 );
    s << stdhep._prntlast[i] << " ";
    s.width( 4 );
    s << stdhep._daugfirst[i] << " ";
    s.width( 4 );
    s << stdhep._dauglast[i] << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._p4[i].get( 1 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._p4[i].get( 2 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._p4[i].get( 3 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._p4[i].get( 0 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._x[i].get( 0 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._x[i].get( 1 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._x[i].get( 2 ) << " ";
    s.width( 7 );
    s.precision( 4 );
    s << setiosflags( ios::right | ios::fixed );
    s << stdhep._x[i].get( 3 ) << endl;
    s.width( 0 );
  }
 
  s << endl;
 
  s.width( w );
  s.precision( p );
  s.flags( f );
 
  return s;
}