include/Geant4/G4DNAPolyNucleotideReactionProcess.hh

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0025 //
0026 /// file: G4DNAPolyNucleotideReactionProcess.hh
0027 /// brief: This file handls reaction process with DNA geometry.
0028 #ifndef G4DNAPolyNucleotideReactionProcess_hh
0029 #define G4DNAPolyNucleotideReactionProcess_hh
0030 #include <CLHEP/Units/SystemOfUnits.h>
0031 #include "G4VITDiscreteProcess.hh"
0032 #include <variant>
0033 class G4DNAMolecularReactionTable;
0034 class G4DNAComponentNode;
0035 class G4VDNAHitModel;
0036
0037 class G4DNAPolyNucleotideReactionProcess : public G4VITDiscreteProcess
0038 {
0039  public:
0040   explicit G4DNAPolyNucleotideReactionProcess(
0041     const G4String& aName = "DNAStaticMoleculeReactionProcess",
0042     G4int verbosityLevel  = 0);
0043   ~G4DNAPolyNucleotideReactionProcess() override;
0044
0045   G4DNAPolyNucleotideReactionProcess(const G4DNAPolyNucleotideReactionProcess&) = delete;
0046   G4DNAPolyNucleotideReactionProcess& operator =(
0047     const G4DNAPolyNucleotideReactionProcess&) = delete;
0048
0049   inline void SetDNADamageReactionModel(G4VDNAHitModel* pModel);
0050
0051   G4bool IsApplicable(const G4ParticleDefinition&) override { return true; }
0052
0053   G4double CalculateTimeStep(const G4Track& trackA,
0054                              const G4double& userTimeStep = 0);
0055
0056   void StartTracking(G4Track* aTrack) override;
0057
0058   G4double PostStepGetPhysicalInteractionLength(
0059     const G4Track&,  // track
0060     G4double,        // previousStepSize
0061     G4ForceCondition* pForceCond) override;
0062   G4VParticleChange* PostStepDoIt(const G4Track& track, const G4Step&) override;
0063
0064   G4double GetMeanFreePath(const G4Track&, G4double, G4ForceCondition*) override
0065   {
0066     return DBL_MAX;
0067   }
0068
0069   inline void SetVerbose(G4int verbose);
0070
0071  protected:
0072   G4VParticleChange fParticleChange;
0073
0074  private:
0075   struct G4PolyNucleotideReactionState
0076     : public G4ProcessStateBase<G4PolyNucleotideReactionState>
0077   {
0078     G4PolyNucleotideReactionState();
0079     ~G4PolyNucleotideReactionState() override = default;
0080     G4String GetType() override { return "PolyNucleotideReactionState"; }
0081
0082     using DNANode =
0083       std::variant<const G4DNAComponentNode*, /*for dnadamage chain*/
0084                    const G4VPhysicalVolume* /*for molecularDNA chain*/>;
0085     DNANode fNodeReactant;
0086     G4double fSampledMinTimeStep;
0087     G4double fPreviousTimeAtPreStepPoint;
0088   };
0089   G4bool fHasAlreadyReachedNullTime{false};
0090   G4int fVerbose;
0091   G4double fRCutOff;
0092   G4VDNAHitModel* fpDamageModel{nullptr};
0093 };
0094 inline void G4DNAPolyNucleotideReactionProcess::SetVerbose(G4int verbose)
0095 {
0096   fVerbose = verbose;
0097 }
0098
0099 inline void G4DNAPolyNucleotideReactionProcess::SetDNADamageReactionModel(
0100   G4VDNAHitModel* pModel)
0101 {
0102   fpDamageModel = pModel;
0103 }
0104 #endif