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/// \file G03PrimaryGeneratorAction.cc
/// \brief Implementation of the G03PrimaryGeneratorAction class

// Class G03PrimaryGeneratorAction implementation
//
// ----------------------------------------------------------------------------

#include "G03PrimaryGeneratorAction.hh"

#include "G4ParticleDefinition.hh"
#include "G4SystemOfUnits.hh"
#include "globals.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

G03PrimaryGeneratorAction::G03PrimaryGeneratorAction()
  : G4VUserPrimaryGeneratorAction(), fParticleGun(0), fParticleTable(0)
{
  // Particle gun and particle table
  //
  fParticleGun = new G4ParticleGun();
  fParticleTable = G4ParticleTable::GetParticleTable();

  // Default particle
  //
  fParticleGun->SetParticleDefinition(fParticleTable->FindParticle("geantino"));
  fParticleGun->SetParticleEnergy(1.0 * MeV);

  G4ThreeVector err1 = G4ThreeVector(-1260, -560, 40);  // outside
  G4ThreeVector err2 = G4ThreeVector(100, -240, 120);  // inside
  G4ThreeVector err2v = (err2 - err1).unit();

  fParticleGun->SetParticleMomentumDirection(err2v);
  fParticleGun->SetParticlePosition(err1);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

G03PrimaryGeneratorAction::~G03PrimaryGeneratorAction()
{
  delete fParticleGun;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void G03PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
  fParticleGun->GeneratePrimaryVertex(anEvent);
}
