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// $Id: G4Penelope08IonisationModel.hh,v 1.1 2010/07/28 07:12:13 pandola Exp $
// GEANT4 tag $Name: geant4-09-04-ref-00 $
//
// Author: Luciano Pandola
//
// History:
// -----------
// 30 Mar 2010   L. Pandola   1st implementation. 
//
// -------------------------------------------------------------------
//
// Class description:
// Low Energy Electromagnetic Physics, e+ and e- ionisation
// with Penelope Model, version 2008
// -------------------------------------------------------------------

#ifndef G4PENELOPE08IONISATIONMODEL_HH
#define G4PENELOPE08IONISATIONMODEL_HH 1

#include "globals.hh"
#include "G4VEmModel.hh"
#include "G4DataVector.hh"
#include "G4ParticleChangeForLoss.hh"
#include "G4AtomicDeexcitation.hh"

class G4PhysicsFreeVector;
class G4PhysicsLogVector;
class G4ParticleDefinition;
class G4DynamicParticle;
class G4MaterialCutsCouple;
class G4Material;
class G4PenelopeOscillatorManager;
class G4PenelopeOscillator;
class G4PenelopeCrossSection;

class G4Penelope08IonisationModel : public G4VEmModel 
{

public:
  
  G4Penelope08IonisationModel(const G4ParticleDefinition* p=0,
			 const G4String& processName ="PenIoni");
  
  virtual ~G4Penelope08IonisationModel();

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

  //*This is a dummy method. Never inkoved by the tracking, it just issues 
  //*a warning if one tries to get Cross Sections per Atom via the 
  //*G4EmCalculator.
  virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
                                              G4double,
                                              G4double,
                                              G4double,
                                              G4double,
                                              G4double);

  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;};

  void ActivateAuger(G4bool);

  G4double GetDensityCorrection(const G4Material*,G4double energy);

protected:
  G4ParticleChangeForLoss* fParticleChange;

private:
  void ClearTables();

  G4Penelope08IonisationModel & operator=(const G4Penelope08IonisationModel &right);
  G4Penelope08IonisationModel(const G4Penelope08IonisationModel&);

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


  void BuildDeltaTable(const G4Material*);

  G4DataVector* ComputeShellCrossSectionsElectron(G4PenelopeOscillator* ,
						  G4double energy,G4double cut,
					          G4double delta);
    
  G4DataVector* ComputeShellCrossSectionsPositron(G4PenelopeOscillator* ,
						  G4double energy,G4double cut,
		                                  G4double delta);

  void SampleFinalStateElectron(const G4Material*,G4double cutEnergy,G4double kineticEnergy);
  void SampleFinalStatePositron(const G4Material*,G4double cutEnergy,G4double kineticEnergy);

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

  G4int verboseLevel;

  G4bool isInitialised;
 
  G4AtomicDeexcitation deexcitationManager;

  G4double kineticEnergy1;
  G4double cosThetaPrimary;
  G4double energySecondary;
  G4double cosThetaSecondary;
  G4int targetOscillator;				   

  G4PenelopeOscillatorManager* oscManager;

  //G4PenelopeCrossSection takes care of the logs
  std::map< std::pair<const G4Material*,G4double>, G4PenelopeCrossSection*> *XSTableElectron;
  std::map< std::pair<const G4Material*,G4double>, G4PenelopeCrossSection*> *XSTablePositron;
  
  //delta vs. log(energy)
  std::map<const G4Material*,G4PhysicsFreeVector*> *theDeltaTable;
  G4PhysicsLogVector* energyGrid;

  size_t nBins;


};

#endif