OpBoundaryProcessSimple.hh

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// GEANT4 tag $Name:  $
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// Optical Photon Boundary Process Class Definition



#ifndef OpBoundaryProcessSimple_h
#define OpBoundaryProcessSimple_h 1


#include "Geant4/globals.hh"
#include "Geant4/templates.hh"
#include "Geant4/geomdefs.hh"
#include "Geant4/Randomize.hh"

#include "Geant4/G4RandomTools.hh"
#include "Geant4/G4RandomDirection.hh"

#include "Geant4/G4Step.hh"
#include "Geant4/G4VDiscreteProcess.hh"
#include "Geant4/G4DynamicParticle.hh"
#include "Geant4/G4Material.hh"
#include "Geant4/G4LogicalBorderSurface.hh"
#include "Geant4/G4LogicalSkinSurface.hh"
#include "Geant4/G4OpticalSurface.hh"
#include "Geant4/G4OpticalPhoton.hh"
#include "Geant4/G4TransportationManager.hh"


#include "TH1.h"
#include "TTree.h"



// Class Definition

namespace larg4 {

  // Possible statuses of a particle after each step.
  enum OpBoundaryProcessSimpleStatus {  Undefined, NotAtBoundary, SimpleAbsorbedNoRefl,
          SimpleAbsorbed, SimpleDiffuse, SimpleSpecular, StepTooSmall, NoRINDEX };
  
class OpBoundaryProcessSimple : public G4VDiscreteProcess
  {


  public:


    // Constructors and Destructor

    OpBoundaryProcessSimple(const G4String& processName = "OpBoundary",
          G4ProcessType type = fOptical);

    ~OpBoundaryProcessSimple();



  public:

    G4bool IsApplicable(const G4ParticleDefinition& aParticleType);
    // Returns true -> 'is applicable' only for an optical photon.

    G4double GetMeanFreePath(const G4Track& ,
           G4double ,
           G4ForceCondition* condition);
    // Returns infinity; i. e. the process does not limit the step,
    // but sets the 'Forced' condition for the DoIt to be invoked at
    // every step. However, only at a boundary will any action be
    // taken.

    G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
            const G4Step&  aStep);
    // This is the method implementing boundary processes.

    OpBoundaryProcessSimpleStatus GetStatus() const;
    // Returns the current status.


  private:

    G4bool G4BooleanRand(const G4double prob) const;
    // Generate a random bool to decide which process to execute

  private:

    OpBoundaryProcessSimpleStatus fTheStatus;
    G4double fCarTolerance;

    int fVerbosity;

  };


  // Inline methods

  inline
  G4bool OpBoundaryProcessSimple::G4BooleanRand(const G4double prob) const
  {
    /* Returns a random boolean variable with the specified probability */
    return (G4UniformRand() < prob);
  }

  inline
  G4bool OpBoundaryProcessSimple::IsApplicable(const G4ParticleDefinition&
                 aParticleType)
  {
    return ( &aParticleType == G4OpticalPhoton::OpticalPhoton() );
  }

  inline
  OpBoundaryProcessSimpleStatus OpBoundaryProcessSimple::GetStatus() const
  {
    return fTheStatus;
  }

}

#endif /* OpBoundaryProcessSimple_h */