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// Author V.Ivanchenko 15.04.2024
//
// General ion ionisation model applicable for G4GenericIons.
// Concrete model of ion ionisation is selected on fly.
// Lowest energy limit - tracking cut and stationary mode are taken
// from EM parameters.
//

#ifndef G4DNAGeneralIonIonisationModel_h
#define G4DNAGeneralIonIonisationModel_h 1

#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"

class G4DNAGeneralIonIonisationModel : public G4VEmModel
{
public:

  G4DNAGeneralIonIonisationModel(const G4ParticleDefinition* p = nullptr, 
		                 const G4String& nam = "DNAIonIonisationModel");

  ~G4DNAGeneralIonIonisationModel() override = default;

  G4DNAGeneralIonIonisationModel & operator=
  (const  G4DNAGeneralIonIonisationModel &right) = delete;
  G4DNAGeneralIonIonisationModel(const G4DNAGeneralIonIonisationModel&) = delete;

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

  G4double CrossSectionPerVolume(const G4Material* material,
				 const G4ParticleDefinition* p,
				 G4double ekin, G4double emin,
				 G4double emax) override;

  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
			 const G4MaterialCutsCouple*,
			 const G4DynamicParticle*,
			 G4double, G4double) override;

  void StartTracking(G4Track*) override;

protected:

  G4ParticleChangeForGamma* fParticleChangeForGamma{nullptr};

private:

  G4double fLowestEnergy{0.0};
  const G4DynamicParticle* fDynParticle{nullptr};
  G4VEmModel* fCurrentModel{nullptr};

  // list of concrete ion ionisation models, put extra here
  G4VEmModel* fRuddIonisation;
};

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

#endif