G4EzWorld.cc

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//
// ====================================================================
//   G4EzWorld.cc
//
//                                         2005 Q
// ====================================================================
#include "G4EzWorld.hh"
#include "G4Element.hh"
#include "G4Material.hh"
#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4VisAttributes.hh"
#include "G4RunManager.hh"
#include "G4PhysicalConstants.hh"

G4VPhysicalVolume* G4EzWorld::world= G4EzWorld::CreateWorld();

// ====================================================================
//
// class description
//
// ====================================================================

G4EzWorld::G4EzWorld()
{
}

G4EzWorld::~G4EzWorld()
{
  world= 0;
}


G4VPhysicalVolume* G4EzWorld::CreateWorld
                   (G4double dx, G4double dy, G4double dz)
{
  // default matetial is "vacuum"
  G4Material* vacuum= G4Material::GetMaterial("_Vacuum", false);

  if(vacuum==0) {
    G4Element* elN= new G4Element("_N", "",  7.,  14.00674*g/mole);
    G4Element* elO= new G4Element("_O", "",  8.,  15.9994*g/mole);

    vacuum= new G4Material("_Vacuum", universe_mean_density, 2);
    vacuum-> AddElement(elN,  0.7);
    vacuum-> AddElement(elO,  0.3);
  }

  G4Box* sdworld= new G4Box("world", dx/2., dy/2., dz/2.);
  G4LogicalVolume* lvworld= new G4LogicalVolume(sdworld, vacuum, "word");
  G4PVPlacement* aworld= new G4PVPlacement(0, G4ThreeVector(), "world",
                                           lvworld, 0, false, 0);
  
  // vis. attributes
  G4VisAttributes* vaworld= new G4VisAttributes(G4Color(1.,1.,1.));
  vaworld-> SetForceWireframe(true);
  lvworld-> SetVisAttributes(vaworld);

  return aworld;

}


void G4EzWorld::Reset(G4double dx, G4double dy, G4double dz)
{
  delete world;
  world= CreateWorld(dx, dy, dz);

  G4RunManager* runManager= G4RunManager::GetRunManager();
  runManager-> DefineWorldVolume(world);
}


void G4EzWorld::Resize(G4double dx, G4double dy, G4double dz)
{
  G4Box* box= dynamic_cast<G4Box*>(world-> GetLogicalVolume()-> GetSolid());
  box-> SetXHalfLength(dx/2.);
  box-> SetYHalfLength(dy/2.);
  box-> SetZHalfLength(dz/2.);

  G4RunManager* runManager= G4RunManager::GetRunManager();
  runManager-> GeometryHasBeenModified();
}


void G4EzWorld::SetMaterial(G4Material* amaterial)
{
  world-> GetLogicalVolume()-> SetMaterial(amaterial);
}


void G4EzWorld::SetVisibility(G4bool qvis)
{
  G4VisAttributes* vaworld= const_cast<G4VisAttributes*>(
    world-> GetLogicalVolume()-> GetVisAttributes());
  vaworld-> SetVisibility(qvis);
}