Import Geant4 11.0.0.beta source tree

2021-06-25 16:12:29 +02:00
parent c968e26a39
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+/// \file geometry/VecGeomNavigation/src/VG01PrimaryGeneratorAction.cc
+/// \brief Implementation of the VG01PrimaryGeneratorAction class
+//
+//  Authors: J. Apostolakis & S. Wenzel (CERN)  2018-2021
+//
+//  Started from FullCMS code by Mihaly Novak (CERN) 2017  
+
+#include "VG01PrimaryGeneratorAction.hh"
+#include "G4Event.hh"
+#include "G4ParticleGun.hh"
+#include "G4ParticleTable.hh"
+#include "G4ParticleDefinition.hh"
+#include "G4SystemOfUnits.hh"
+
+#include "G4RandomDirection.hh"
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
+VG01PrimaryGeneratorAction::VG01PrimaryGeneratorAction( EGeneratorMode mode )
+ : G4VUserPrimaryGeneratorAction(),
+   fParticleGun(0),
+   fMode(mode)
+{
+  G4int n_particle = 1;
+  fParticleGun = new G4ParticleGun(n_particle);
+
+  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
+  G4String particleName;
+  fParticleGun->SetParticleDefinition(
+               particleTable->FindParticle(particleName="geantino"));
+  fParticleGun->SetParticleEnergy(1.0*GeV);
+  fParticleGun->SetParticlePosition(G4ThreeVector(0,0,0) ); // -1.2*m, 0.1, 0.1));
+}
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
+VG01PrimaryGeneratorAction::~VG01PrimaryGeneratorAction()
+{
+  delete fParticleGun;
+}
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
+void VG01PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
+{
+  G4ThreeVector dir(1.0,0.0,0.0);
+
+  // G4ThreeVector FixedMode[3] = 
+  //  { G4ThreeVector(1,0,0), G4ThreeVector(1,0.1,0), G4ThreeVector( 1, 0, 0.1)};
+  G4ThreeVector AxisModeVectors[3] = 
+      { G4ThreeVector(1,0,0), G4ThreeVector(0,1,0), G4ThreeVector( 0, 0, 1.0)};
+
+  if( fMode == kFreeMode ){
+    // Do not fix the direction 
+    //   -- UI commands to particle mode can change it!
+    fParticleGun->GeneratePrimaryVertex(anEvent);
+    return; 
+    //----
+  } 
+  else if( fMode == kFixedMode )
+  {
+    G4int i = anEvent->GetEventID() % 3;
+    dir= G4ThreeVector(1.0,0.0,0.0);
+    switch(i)
+    {
+       case 0:
+          break;
+       case 1:
+          dir.setY(0.1);
+          break;
+       case 2:
+          dir.setZ(0.1);
+          break;
+    }
+  } 
+  else if( fMode == kUniformMode )
+  {
+    dir = G4RandomDirection();
+  }
+  else if ( fMode == kAxisMode )
+  {
+    G4int i = anEvent->GetEventID() % 3;
+    dir = AxisModeVectors[i];
+  }
+
+  fParticleGun->SetParticleMomentumDirection(dir);
+  fParticleGun->GeneratePrimaryVertex(anEvent);
+}