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/// \file Par02FastSimModelHCal.hh
/// \brief Definition of the Par02FastSimModelHCal class

#ifndef PAR02_HCAL_FAST_SIM_MODEL_H
#define PAR02_HCAL_FAST_SIM_MODEL_H

#include "Par02DetectorParametrisation.hh"

#include "G4Step.hh"
#include "G4VFastSimulationModel.hh"

/// Shortcut to the ordinary tracking for hadronic calorimeters.
///
/// Fast simulation model describes what should be done instead of a
/// normal tracking. Instead of the ordinary tracking, a particle deposits
/// its energy at the entrance to the hadronic calorimeter and its value
/// is smeared (by Par02Smearer::SmearMomentum()). Based on G4
/// examples/extended/parametrisations/Par01/include/Par01EMShowerModel.hh .
/// @author Anna Zaborowska

class Par02FastSimModelHCal : public G4VFastSimulationModel
{
  public:
    /// A constructor.
    /// @param aModelName A name of the fast simulation model.
    /// @param aEnvelope A region where the model can take over the ordinary tracking.
    /// @param aParamType A parametrisation type.
    Par02FastSimModelHCal(G4String aModelName, G4Region* aEnvelope,
                          Par02DetectorParametrisation::Parametrisation aParamType);

    /// A constructor.
    /// @param aModelName A name of the fast simulation model.
    /// @param aEnvelope A region where the model can take over the ordinary tracking.
    Par02FastSimModelHCal(G4String aModelName, G4Region* aEnvelope);

    /// A constructor.
    /// @param aModelName A name of the fast simulation model.
    Par02FastSimModelHCal(G4String aModelName);

    ~Par02FastSimModelHCal();

    /// Checks if this model should be applied to this particle type.
    /// @param aParticle A particle definition (type).
    virtual G4bool IsApplicable(const G4ParticleDefinition& aParticle);

    /// Checks if the model should be applied, taking into account the
    /// kinematics of a track.
    /// @param aFastTrack A track.
    virtual G4bool ModelTrigger(const G4FastTrack& aFastTrack);

    /// Smears the energy deposit and saves it, together with the
    /// position of the deposit, the hadronic calorimeter resolution and
    /// efficiency to the Par02PrimaryParticleInformation.
    /// @param aFastTrack A track.
    /// @param aFastStep A step.
    virtual void DoIt(const G4FastTrack& aFastTrack, G4FastStep& aFastStep);

  private:
    /// A pointer to Par02DetectorParametrisation used to get the efficiency and
    /// resolution of the detector for a given particle and parametrisation type.
    Par02DetectorParametrisation* fCalculateParametrisation;

    /// A parametrisation type.
    Par02DetectorParametrisation::Parametrisation fParametrisation;
};

#endif
