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//
// Author: Luciano Pandola
//
// History:
// -----------
// 23 Aug 2010   L. Pandola   1st implementation. 
// 24 May 2011   L. Pandola   Renamed (make v2008 as default Penelope)
// 02 Oct 2013   L. Pandola   Migrated to multi-thread
//
// -------------------------------------------------------------------
//
// Class description:
// Low Energy Electromagnetic Physics, e+ and e- bremsstrahlung
// with Penelope Model, version 2008
// -------------------------------------------------------------------

#ifndef G4PENELOPEBREMSSTRAHLUNGMODEL_HH
#define G4PENELOPEBREMSSTRAHLUNGMODEL_HH 1

#include "globals.hh"
#include "G4VEmModel.hh"
#include "G4DataVector.hh"
#include "G4ParticleChangeForLoss.hh"


class G4PhysicsFreeVector;
class G4PhysicsLogVector;
class G4ParticleDefinition;
class G4DynamicParticle;
class G4MaterialCutsCouple;
class G4Material;
class G4PenelopeOscillatorManager;
class G4PenelopeCrossSection;
class G4PenelopeBremsstrahlungFS;
class G4PenelopeBremsstrahlungAngular;

class G4PenelopeBremsstrahlungModel : public G4VEmModel 
{

public:
  
  G4PenelopeBremsstrahlungModel(const G4ParticleDefinition* p=0,
			 const G4String& processName ="PenBrem");
  
  virtual ~G4PenelopeBremsstrahlungModel();

  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
  virtual void InitialiseLocal(const G4ParticleDefinition*,
			       G4VEmModel*);

  //DUMMY METHOD
  virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition* theParticle,
                                              G4double kinEnergy,
                                              G4double Z,
                                              G4double A=0,
                                              G4double cut=0,
                                              G4double emax=DBL_MAX);
  

  virtual G4double CrossSectionPerVolume(const G4Material* material,
                                         const G4ParticleDefinition* theParticle,
                                         G4double kineticEnergy,
                                         G4double cutEnergy,
                                         G4double maxEnergy = DBL_MAX);
 
 
  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
				 const G4MaterialCutsCouple*,
				 const G4DynamicParticle*,
				 G4double tmin,
				 G4double maxEnergy);
				   
  virtual G4double ComputeDEDXPerVolume(const G4Material*,
                               const G4ParticleDefinition*,
                               G4double kineticEnergy,
                               G4double cutEnergy);

  // Min cut in kinetic energy allowed by the model
  virtual G4double MinEnergyCut(const G4ParticleDefinition*,
                                const G4MaterialCutsCouple*);		

  void SetVerbosityLevel(G4int lev){verboseLevel = lev;};
  G4int GetVerbosityLevel(){return verboseLevel;};

protected:
  G4ParticleChangeForLoss* fParticleChange;
  const G4ParticleDefinition* fParticle;

private:
  void ClearTables();

  G4PenelopeBremsstrahlungModel & operator=(const G4PenelopeBremsstrahlungModel &right);
  G4PenelopeBremsstrahlungModel(const G4PenelopeBremsstrahlungModel&);

  G4PenelopeCrossSection* GetCrossSectionTableForCouple(const G4ParticleDefinition*,
  							const G4Material*,G4double cut);
  void SetParticle(const G4ParticleDefinition*);

  //Intrinsic energy limits of the model: cannot be extended by the parent process
  G4double fIntrinsicLowEnergyLimit;
  G4double fIntrinsicHighEnergyLimit;

  G4int verboseLevel;

  G4bool isInitialised;
 
  G4PenelopeOscillatorManager* oscManager;

  //
  //Members to handle and store cross section tables
  void BuildXSTable(const G4Material* material,G4double cut);

  //This is the main energy grid
  G4PhysicsLogVector* energyGrid;
  size_t nBins;
  //G4PenelopeCrossSection takes care of the logs
  std::map< std::pair<const G4Material*,G4double>, G4PenelopeCrossSection*> *XSTableElectron;
  std::map< std::pair<const G4Material*,G4double>, G4PenelopeCrossSection*> *XSTablePositron;
  G4double GetPositronXSCorrection(const G4Material*,G4double energy);

  //Helpers
  G4PenelopeBremsstrahlungFS* fPenelopeFSHelper;
  G4PenelopeBremsstrahlungAngular* fPenelopeAngular;

  //Used only for G4EmCalculator and Unit Tests
  G4bool fLocalTable;

};

#endif

