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// $Id$
// 
/// \file ExG4DetectorConstruction02.hh
/// \brief Definition of the ExG4DetectorConstruction02 class

#ifndef ExG4DetectorConstruction02_h
#define ExG4DetectorConstruction02_h 1

#include "G4VUserDetectorConstruction.hh"

#include "ExG4DetectorConstruction02Messenger.hh"

#include "G4ThreeVector.hh"

#include "CLHEP/Units/SystemOfUnits.h"

class G4LogicalVolume;
class G4Material;
class DetectorMessenger;

/// Simple detector construction with a box volume placed in a world

class ExG4DetectorConstruction02 : public G4VUserDetectorConstruction
{
  public:
    ExG4DetectorConstruction02(
       const G4String& boxMaterialName = "G4_AIR",
       G4double boxHx = 40*CLHEP::cm, 
       G4double boxHy = 40*CLHEP::cm, 
       G4double boxHz = 40*CLHEP::cm,
       const G4String& worldMaterialName = "G4_AIR",
       G4double worldSizeFactor = 1.25);
    ~ExG4DetectorConstruction02();

  public:
    // methods from base class 
    virtual G4VPhysicalVolume* Construct();

    // set methods
    void  SetBoxMaterial(const G4String& materialName);
    void  SetWorldMaterial(const G4String& materialName);
    void  SetBoxDimensions(G4double hx, G4double hy, G4double hz);
    void  SetWorldSizeFactor(G4double factor);
                       
  private:
    ExG4DetectorConstruction02Messenger fMessenger;

    G4String               fBoxMaterialName;
    G4String               fWorldMaterialName;
    G4ThreeVector          fBoxDimensions;
    G4double               fWorldSizeFactor;
    G4LogicalVolume*       fBoxVolume;  
    G4LogicalVolume*       fWorldVolume;  
};

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#endif

