pyParticleGun.cc

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// ====================================================================
//   pyParticleGun.cc
//
//   [ParticleGun]
//   a site-module of Geant4Py
//
//   primary generator action with particle gun
//
//                                         2005 Q
// ====================================================================
#include <boost/python.hpp>
#include "ParticleGunAction.hh"
#include "G4ParticleGun.hh"
#include "G4RunManager.hh"
 
using namespace boost::python;
 
// ====================================================================
// thin wrappers
// ====================================================================
namespace pyParticleGun {
 
G4ParticleGun* Construct()
{
  G4RunManager* runMgr= G4RunManager::GetRunManager();
 
  ParticleGunAction* pga= new ParticleGunAction;
  runMgr-> SetUserAction(pga);
 
  return pga-> GetParticleGun();
}
 
}
 
using namespace pyParticleGun;
 
// ====================================================================
//   Expose to Python
// ====================================================================
 
BOOST_PYTHON_MODULE(_ParticleGun) {
  class_<ParticleGunAction, ParticleGunAction*,
    bases<G4VUserPrimaryGeneratorAction> >
    ("ParticleGunAction", "primary generator action with particle gun")
    .def("GetParticleGun", &ParticleGunAction::GetParticleGun,
         return_internal_reference<>())
    ;
 
  // ---
  def("Construct", Construct,
      return_value_policy<reference_existing_object>());
 
}