EvtGen.hh

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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: EvtGen/EvtGen.hh
//
// Description:Main class to provide user interface to EvtGen.
//
// Modification history:
// r
//    RYD     March 24, 1998     Module created
//
//    DJL     August 10, 1998    Additional Event member function added
//
//    RYD     December 25, 1999  Any application using EvtGen will need
//                               to instantiate an instance of this class
//                               and hold on to it untill done generating
//                               events. This class will now hold data used
//                               for the lifetime of the generator.
//------------------------------------------------------------------------
 
#ifndef EVTGEN_HH
#define EVTGEN_HH
 
#include "EvtGenBase/EvtPDL.hh"
 
#include <CLHEP/Vector/LorentzVector.h> //maqm add
 
class EvtParticle;
class EvtRandomEngine;
// class HepLorentzVector;  //maqm comment
class EvtVector4R;
class EvtStdHep;
class EvtSpinDensity;
class EvtAbsRadCorr;
 
using CLHEP::HepLorentzVector; // maqm add
 
class EvtGen {
 
public:
  EvtGen( const char* const decayName, const char* const pdtTableName,
          EvtRandomEngine* randomEngine = 0, EvtAbsRadCorr* isrEngine = 0 );
  ~EvtGen();
 
  void readUDecay( const char* const udecay_name );
 
  void generateDecay( int stdhepid, EvtVector4R P, EvtVector4R D, EvtStdHep* evtStdHep,
                      EvtSpinDensity* spinDensity = 0 );
 
  void generateDecay( EvtParticle* p );
 
  // These two methods are obsolete
  void generateEvent( int stdhepid, HepLorentzVector P, HepLorentzVector D );
  void generateEvent( EvtParticle* p, HepLorentzVector D );
 
private:
  EvtPDL _pdl;
};
 
#endif