//--------------------------------------------------------------------------
//
// 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 "EvtGenBase/EvtPatches.hh"

#include <iostream>
#include <iomanip>
#include "EvtGenBase/EvtVector4R.hh"
#include "EvtGenBase/EvtStdHep.hh"
using namespace std;


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();
  std::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((std::ios::fmtflags)f);
  
  return s;

}  

*/