medical_linac/src/StepMax.cc

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0025 //
0026 // Code developed by
0027 // Silvia Pozzi (1), silvia.pozzi@iss.it
0028 // Barbara Caccia (1), barbara.caccia@iss.it
0029 // Carlo Mancini Terracciano (2), carlo.mancini.terracciano@roma1.infn.it
0030 // (1) Istituto Superiore di Sanita' and INFN Roma, Italy
0031 // (2) Univ. La Sapienza and INFN Roma, Italy
0032
0033 #include <StepMax.hh>
0034 #include <StepMaxMessenger.hh>
0035
0036 /////////////////////////////////////////////////////////////////////////////
0037 StepMax::StepMax(const G4String& processName)
0038  : G4VDiscreteProcess(processName),MaxChargedStep(DBL_MAX)
0039 {
0040   pMess = new StepMaxMessenger(this);
0041 }
0042
0043 /////////////////////////////////////////////////////////////////////////////
0044 StepMax::~StepMax()
0045 { delete pMess; }
0046
0047 /////////////////////////////////////////////////////////////////////////////
0048 G4bool StepMax::IsApplicable(const G4ParticleDefinition& particle)
0049 {
0050   return (particle.GetPDGCharge() != 0.);
0051 }
0052
0053 /////////////////////////////////////////////////////////////////////////////
0054 void StepMax::SetMaxStep(G4double step) {MaxChargedStep = step;}
0055
0056 /////////////////////////////////////////////////////////////////////////////
0057 G4double StepMax::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
0058                                                   G4double,
0059                                                   G4ForceCondition* condition )
0060 {
0061   // condition is set to "Not Forced"
0062   *condition = NotForced;
0063
0064   G4double ProposedStep = DBL_MAX;
0065
0066   if((MaxChargedStep > 0.) &&
0067      (aTrack.GetVolume() != 0) &&
0068      (aTrack.GetVolume()->GetName() == "DetectorPhys"))
0069      ProposedStep = MaxChargedStep;
0070
0071   return ProposedStep;
0072 }
0073
0074 /////////////////////////////////////////////////////////////////////////////
0075 G4VParticleChange* StepMax::PostStepDoIt(const G4Track& aTrack, const G4Step&)
0076 {
0077    // do nothing
0078    aParticleChange.Initialize(aTrack);
0079    return &aParticleChange;
0080 }
0081