#ifndef mgDetectorConstruction_h
#define mgDetectorConstruction_h 1

#include "globals.hh"
#include "G4VUserDetectorConstruction.hh"
#include "tls.hh"

class G4LogicalVolume;
class G4VPhysicalVolume;
class G4Material;

class mgDetectorConstruction : public G4VUserDetectorConstruction
{
  public: 
    mgDetectorConstruction();
    virtual ~mgDetectorConstruction();

  public:
    virtual G4VPhysicalVolume* Construct();
    
  //Set Methods
    void SetSphereMaterial(G4String );
    void SetCheckOverlaps(G4bool );

    G4LogicalVolume* GetShell1Volume() const { return fLogicSphere; }
    G4LogicalVolume* GetShell2Volume() const { return fLogicShell2; }
    G4LogicalVolume* GetShell3Volume() const { return fLogicShell4; }

    G4Material* GetSphereMaterial() const { return fSphereMaterial; }

  private:
  //methods
    void DefineMaterials();
    G4VPhysicalVolume* DefineVolumes();

  //data members
  G4LogicalVolume* fLogicSphere; //pointer to detector orb
  G4LogicalVolume* fLogicShell;  //pointer to the buffer-detector shell
  G4LogicalVolume* fLogicShell1;  //pointer to the buffer layer shell
  G4LogicalVolume* fLogicShell2;  //pointer to the buffer-water shell
  G4LogicalVolume* fLogicShell3;  //pointer to the water layer shell
  G4LogicalVolume* fLogicShell4;  //pointer to the outermost shell
  //G4LogicalVolume* fLogicShell5;  //pointer to the logical boundary shell

  G4Material* vacuum;
  G4Material* fSphereMaterial;
  G4Material* iron;
  G4Material* fShellMaterial;

  G4bool fCheckOverlaps; //Option to activate shecking of volume overlaps.
};

#endif