G4VPrimaryGenerator.cc

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// G4VPrimaryGenerator class implementation
//
// Author: Makoto Asai (SLAC)
// --------------------------------------------------------------------
 
#include "G4VPrimaryGenerator.hh"
#include "G4TransportationManager.hh"
#include "G4StateManager.hh"
#include "G4Navigator.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VSolid.hh"
 
G4bool G4VPrimaryGenerator::CheckVertexInsideWorld(const G4ThreeVector& pos)
{
  // Check can only happen if run has been initialised
  //
  if (G4StateManager::GetStateManager()->GetCurrentState() != G4State_Idle)
  {
    return true;
  }
 
  G4Navigator* navigator= G4TransportationManager::GetTransportationManager()
                                                 -> GetNavigatorForTracking();
  G4VPhysicalVolume* world= navigator-> GetWorldVolume();
  G4VSolid* solid = world-> GetLogicalVolume()-> GetSolid();
  EInside qinside = solid-> Inside(pos);
  
  return qinside == kInside;
}
 
void G4VPrimaryGenerator::SetParticlePosition(G4ThreeVector aPosition)
{
  if (ifCheckInside && !CheckVertexInsideWorld(aPosition))
  {
    G4ExceptionDescription ed;
    ed << "Invalid vertex position (" << aPosition << "). "
       << "Position MUST be located -inside- the world volume." << G4endl
       << "Gun position has NOT been changed!";
    G4Exception("G4VPrimaryGenerator::SetParticlePosition",
                "Event0401", JustWarning, ed);
    return;
  }
  particle_position = aPosition;
}