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#ifndef G4PSCylinderSurfaceCurrent_h
#define G4PSCylinderSurfaceCurrent_h 1

#include "G4VPrimitivePlotter.hh"
#include "G4THitsMap.hh"

#include "G4Tubs.hh"
#include "G4PSDirectionFlag.hh"

////////////////////////////////////////////////////////////////////////////////
// (Description)
//   This is a primitive scorer class for scoring Surface Current.
//  Current version assumes only for G4Tubs shape, and the surface
//  is defined at the inner plane of the tubs.
//   The current is given in the unit of area.
//    e.g.  (Number of tracks)/mm2.
//
// Surface is defined at the  inner surface of the tube.
// Direction                   R    R+dR
//   0  IN || OUT            ->|<-  |      fCurrent_InOut
//   1  IN                   ->|    |      fCurrent_In
//   2  OUT                    |<-  |      fCurrent_Out
//
//
// Created: 2007-03-21  Tsukasa ASO
// 2010-07-22   Introduce Unit specification.
// 2020-10-06   Use G4VPrimitivePlotter and fill 1-D histo of kinetic energy (x)
//              vs. surface current * track weight (y)             (Makoto Asai)
//
///////////////////////////////////////////////////////////////////////////////

class G4PSCylinderSurfaceCurrent : public G4VPrimitivePlotter
{
 public: 
  G4PSCylinderSurfaceCurrent(const G4String& name, G4int direction, G4int depth = 0);
  G4PSCylinderSurfaceCurrent(const G4String& name, G4int direction,
                             const G4String& unit, G4int depth = 0);
  ~G4PSCylinderSurfaceCurrent() override = default;

  inline void Weighted(G4bool flg = true) { weighted = flg; }
  // Multiply track weight

  inline void DivideByArea(G4bool flg = true) { divideByArea = flg; }
  // Divided by Area.

  void Initialize(G4HCofThisEvent*) override;
  void clear() override;
  void PrintAll() override;

  virtual void SetUnit(const G4String& unit);

 protected: 
  G4bool ProcessHits(G4Step*, G4TouchableHistory*) override;
  G4int IsSelectedSurface(G4Step*, G4Tubs*);
  virtual void DefineUnitAndCategory();

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

#endif
