//
// ********************************************************************
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//
//
// $Id$
//
// ----------------------------------------------------------------------
// Class G4GeometrySampler
//
// Class description:
// This class inherits from G4VSampler. It is used for scoring and 
// importance sampling in the tracking (mass) geometry.
// See also the description in G4VSampler.hh.

// Author: Michael Dressel (Michael.Dressel@cern.ch)
// ----------------------------------------------------------------------
#ifndef G4GeometrySampler_hh
#define G4GeometrySampler_hh G4GeometrySampler_hh

#include "G4Types.hh"
#include "G4String.hh"
#include "G4VSampler.hh"
#include "G4VSamplerConfigurator.hh"

class G4ImportanceConfigurator;
class G4WeightWindowConfigurator;
//class G4ScoreConfigurator;
class G4WeightCutOffConfigurator;
//class G4VGCellFinder;

class G4GeometrySampler : public G4VSampler
{

public:  // with description
 
  explicit G4GeometrySampler(G4VPhysicalVolume *worldvolume, const G4String &particlename);
  explicit G4GeometrySampler(G4String worldvolumeName, const G4String &particlename);
  virtual ~G4GeometrySampler();

  //  virtual void PrepareScoring(G4VScorer *Scorer);
  virtual void PrepareImportanceSampling(G4VIStore* istore,
                                         const G4VImportanceAlgorithm 
                                         *ialg);
  virtual void PrepareWeightRoulett(G4double wsurvive, 
                                    G4double wlimit,
                                    G4double isource);
  
  virtual void PrepareWeightWindow(G4VWeightWindowStore *wwstore,
                                   G4VWeightWindowAlgorithm *wwAlg,
                                   G4PlaceOfAction placeOfAction);

  virtual void Configure();
  virtual void AddProcess();

  virtual void ClearSampling();
  virtual G4bool IsConfigured() const;

  void SetParallel(G4bool paraflag);
  void SetWorld(const G4VPhysicalVolume* world);
  void SetParticle(const G4String &particlename);

  inline G4String GetParticleName(){return fParticleName;};
  
private:

  G4GeometrySampler(const G4GeometrySampler &);
  G4GeometrySampler &
  operator=(const G4GeometrySampler &);

private:

  G4String fParticleName;
  const G4VPhysicalVolume* fWorld;
  G4String fWorldName;
  G4ImportanceConfigurator *fImportanceConfigurator;
  //  G4ScoreConfigurator *fScoreConfigurator;
  //  G4VGCellFinder *fGCellFinder;
  G4WeightCutOffConfigurator *fWeightCutOffConfigurator;
  G4VIStore* fIStore;
  G4WeightWindowConfigurator *fWeightWindowConfigurator;
  G4VWeightWindowStore *fWWStore;
  G4bool fIsConfigured;
  G4Configurators fConfigurators;
  
  G4bool paraflag;

};
  
#endif

