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//
// $Id$
//

#ifndef G4PSSphereSurfaceCurrent_h
#define G4PSSphereSurfaceCurrent_h 1

#include "G4VPrimitiveScorer.hh"
#include "G4THitsMap.hh"

#include "G4Sphere.hh"
#include "G4PSDirectionFlag.hh"
////////////////////////////////////////////////////////////////////////////////
// (Description)
//   This is a primitive scorer class for scoring Surface Current.
//  Current version assumes only for G4Sphere shape, and the surface
//  is defined at the inside of the sphere.
//   The current is given in the unit of area. 
//    e.g.  (Number of tracks)/mm2.
//
// Surface is defined  at the inside of sphere.
// Direction                  -Rmin   +Rmax
//   0  IN || OUT            ->|<-     |      fCurrent_InOut
//   1  IN                   ->|       |      fCurrent_In
//   2  OUT                    |<-     |      fCurrent_Out
//
// Created: 2005-11-14  Tsukasa ASO, Akinori Kimura.
//   17-Nov-2005 Bug fix. square definition.
//   31-Mar-2007 T.Aso, Add option for normalizing by the area.
// 2010-07-22   Introduce Unit specification.
// 
///////////////////////////////////////////////////////////////////////////////

class G4PSSphereSurfaceCurrent : public G4VPrimitiveScorer
{
 
  public: // with description
      G4PSSphereSurfaceCurrent(G4String name, G4int direction, G4int depth=0);
      G4PSSphereSurfaceCurrent(G4String name, G4int direction, 
			       const G4String& unit, G4int depth=0);
      virtual ~G4PSSphereSurfaceCurrent();

     inline void Weighted(G4bool flg=true) { weighted = flg; }
     // Multiply track weight
     inline void DivideByArea(G4bool flg=true) { divideByArea = flg; }
     // Divided by Area.

  protected: // with description
      virtual G4bool ProcessHits(G4Step*,G4TouchableHistory*);
      G4int IsSelectedSurface(G4Step*,G4Sphere*);

  public: 
      virtual void Initialize(G4HCofThisEvent*);
      virtual void EndOfEvent(G4HCofThisEvent*);
      virtual void clear();
      virtual void DrawAll();
      virtual void PrintAll();

      virtual void SetUnit(const G4String& unit);

  protected:
      virtual void DefineUnitAndCategory();

  private:
      G4int  HCID;
      G4int  fDirection;
      G4THitsMap<G4double>* EvtMap;
      G4bool weighted;
      G4bool divideByArea;

};

#endif