HadrontherapyStepMax.cc

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//
// This is the *BASIC* version of Hadrontherapy, a Geant4-based application
// See more at: http://g4advancedexamples.lngs.infn.it/Examples/hadrontherapy
//
// Visit the Hadrontherapy web site (http://www.lns.infn.it/link/Hadrontherapy) to request 
// the *COMPLETE* version of this program, together with its documentation;
// Hadrontherapy (both basic and full version) are supported by the Italian INFN
// Institute in the framework of the MC-INFN Group
//

#include "HadrontherapyStepMax.hh"
#include "HadrontherapyStepMaxMessenger.hh"

/////////////////////////////////////////////////////////////////////////////
HadrontherapyStepMax::HadrontherapyStepMax(const G4String& processName)
 : G4VDiscreteProcess(processName),MaxChargedStep(DBL_MAX)
{
  pMess = new HadrontherapyStepMaxMessenger(this);
}
 
/////////////////////////////////////////////////////////////////////////////
HadrontherapyStepMax::~HadrontherapyStepMax() { delete pMess; }

/////////////////////////////////////////////////////////////////////////////
G4bool HadrontherapyStepMax::IsApplicable(const G4ParticleDefinition& particle) 
{ 
  return (particle.GetPDGCharge() != 0.);
}

/////////////////////////////////////////////////////////////////////////////    
void HadrontherapyStepMax::SetMaxStep(G4double step) {MaxChargedStep = step;}

/////////////////////////////////////////////////////////////////////////////
G4double HadrontherapyStepMax::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
                                                  G4double,
                                                  G4ForceCondition* condition )
{
  // condition is set to "Not Forced"
  *condition = NotForced;
  
  G4double ProposedStep = DBL_MAX;

  if((MaxChargedStep > 0.) &&
     (aTrack.GetVolume() != 0) &&
     (aTrack.GetVolume()->GetName() == "DetectorPhys"))
     ProposedStep = MaxChargedStep;

  return ProposedStep;
}

/////////////////////////////////////////////////////////////////////////////
G4VParticleChange* HadrontherapyStepMax::PostStepDoIt(const G4Track& aTrack, const G4Step&)
{
   // do nothing
   aParticleChange.Initialize(aTrack);
   return &aParticleChange;
}