//
// NOTE: this code is incomplete and contains intermediate solutions that are
//       not necessarily fully correct. But we will continue form this state.
//

#ifndef YOURDETECTORCONSTRUCTION_HH
#define YOURDETECTORCONSTRUCTION_HH

#include "G4VUserDetectorConstruction.hh"

class YourDetectorConstruction : public G4VUserDetectorConstruction {

  public:

   YourDetectorConstruction();
   virtual ~YourDetectorConstruction();

   // this is the interface method to implement
   // returns the ptr to the word phys. volume
   virtual G4VPhysicalVolume* Construct();


   //
   // Additionals


   // set/get target material
   void  SetTargetMaterial(const G4String& nistMatName);
   const G4Material* GetTargetMaterial() const { return fTargetMaterial; }

   // set/get target thickness
   void  SetTargetThickness(G4double val);
   G4double GetTargetThickness() const { return fTargetThickness; }


   //
   void  ComputeParameters();



  private:

   // target material
   G4Material*    fTargetMaterial;

   // target thickness
   G4double       fTargetThickness;
   G4double       fTargetYZSize;
   // world size
   G4double       fWorldXSize;
   G4double       fWorldYZSize;

   G4double       fGunXPosition;

   // keep the shape ptrs to be able to resize
   G4Box*         fTargetShape;
   G4Box*         fWorldShape;

   G4LogicalVolume*  fTargetLogical;
};


#endif