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geant4/examples/novice/N01/src/ExN01PrimaryGeneratorAction.cc
T
2016-06-08 15:34:16 +02:00

56 lines
1.4 KiB
C++

// This code implementation is the intellectual property of
// the GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: ExN01PrimaryGeneratorAction.cc,v 1.2 1999/12/15 14:49:19 gunter Exp $
// GEANT4 tag $Name: geant4-01-01 $
//
#include "ExN01PrimaryGeneratorAction.hh"
#include "G4Event.hh"
#include "G4ParticleGun.hh"
#include "G4UImanager.hh"
#include "globals.hh"
ExN01PrimaryGeneratorAction::ExN01PrimaryGeneratorAction()
{
G4int n_particle = 1;
particleGun = new G4ParticleGun(n_particle);
G4UImanager* UI = G4UImanager::GetUIpointer();
UI->ApplyCommand("/gun/particle geantino");
UI->ApplyCommand("/gun/energy 1.0 GeV");
UI->ApplyCommand("/gun/position -2.0 0.0 0.0 m");
}
ExN01PrimaryGeneratorAction::~ExN01PrimaryGeneratorAction()
{
delete particleGun;
}
void ExN01PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
{
G4UImanager* UI = G4UImanager::GetUIpointer();
G4int i = anEvent->GetEventID() % 3;
switch(i)
{
case 0:
UI->ApplyCommand("/gun/direction 1.0 0.0 0.0");
break;
case 1:
UI->ApplyCommand("/gun/direction 1.0 0.1 0.0");
break;
case 2:
UI->ApplyCommand("/gun/direction 1.0 0.0 0.1");
break;
}
particleGun->GeneratePrimaryVertex(anEvent);
}