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// This is the modified version of the example electromagnetic/TestEm7/include/DetectorConstruction.hh

#ifndef DetectorConstruction_h
#define DetectorConstruction_h 1

#include "G4VUserDetectorConstruction.hh"
#include "globals.hh"
#include "G4ThreeVector.hh"

class G4LogicalVolume;
class G4Material;
class DetectorMessenger;

const G4int MaxLayer = 60;

class DetectorConstruction : public G4VUserDetectorConstruction
{
  public:
  
    DetectorConstruction();
   ~DetectorConstruction();

  public:
       
     void SetSizeX         (G4double);
     void SetSizeYZ        (G4double);   
     void SetLayerNumber   (G4int);
     void SetLayerSizeYZ   (G4double);                          
     
     virtual     
     G4VPhysicalVolume* Construct();
     void               UpdateGeometry();
     
  public:  
                    
     G4double     GetWorldSizeX()    {return fWorldSizeX;};
     G4double     GetWorldSizeYZ()   {return fWorldSizeYZ;};
     G4Material*  GetWorldMaterial() {return fWorldMaterial;};     
     G4double     GetAbsorSizeX()    {return fAbsorSizeX;};
     G4double     GetAbsorSizeYZ()   {return fAbsorSizeYZ;};           
     G4Material*  GetAbsorMaterial() {return fAbsorMaterial;};
      
     G4int            GetLayerNumber()         {return fLayerNumber;};
     G4double         GetLayerMass()           {return fLayerMass;}; 
     G4double         GetLayerSizeYZ()         {return fLayerSizeYZ;};

     void         PrintParameters();
                       
  private:
  
     G4double            fWorldSizeX;
     G4double            fWorldSizeYZ;
     G4Material*         fWorldMaterial;           
     G4double            fAbsorSizeX;
     G4double            fAbsorSizeYZ;     
     G4Material*         fAbsorMaterial;
     G4LogicalVolume*    fLAbsor;
     G4LogicalVolume*    fLLayer;
     G4VPhysicalVolume*  fPhysLayer;
     G4double            fLayerSizeYZ;
     G4double            fLayerSizeX;
     
     G4int               fLayerNumber;
     G4double            fLayerMass; 
     DetectorMessenger*  fDetectorMessenger;

  private:
    
     void               DefineMaterials();
     G4VPhysicalVolume* ConstructVolumes();     
};

#endif