G4VContinuousDiscreteProcess.cc

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// $Id$
//
// 
// --------------------------------------------------------------
//      GEANT 4 class implementation file 
//
//      History: first implementation, based on object model of
//      2nd December 1995, G.Cosmo
// --------------------------------------------------------------
//   New Physics scheme           8 Jan. 1997  H.Kurahige
// ------------------------------------------------------------

#include "G4VContinuousDiscreteProcess.hh"
#include "G4SystemOfUnits.hh"

#include "G4Step.hh"
#include "G4Track.hh"
#include "G4MaterialTable.hh"
#include "G4VParticleChange.hh"

G4VContinuousDiscreteProcess::G4VContinuousDiscreteProcess()
  :G4VProcess("No Name Discrete Process"),
   valueGPILSelection(CandidateForSelection)
{
  G4Exception("G4VContinuousDiscreteProcess::G4VContinuousDiscreteProcess()","ProcMan102",
              JustWarning,"Default constructor is called");
}

G4VContinuousDiscreteProcess::G4VContinuousDiscreteProcess(const G4String& aName , G4ProcessType aType)
  : G4VProcess(aName, aType),
    valueGPILSelection(CandidateForSelection)
{
  enableAtRestDoIt = false;
}

G4VContinuousDiscreteProcess::~G4VContinuousDiscreteProcess()
{
}

G4VContinuousDiscreteProcess::G4VContinuousDiscreteProcess(G4VContinuousDiscreteProcess& right)
                  : G4VProcess(right),
                    valueGPILSelection(right.valueGPILSelection)
{
}

G4double G4VContinuousDiscreteProcess::PostStepGetPhysicalInteractionLength(
                             const G4Track& track,
                             G4double   previousStepSize,
                             G4ForceCondition* condition
                            )
{
  if ( (previousStepSize <=0.0) || (theNumberOfInteractionLengthLeft<=0.0)) {
    // beggining of tracking (or just after DoIt of this process)
    ResetNumberOfInteractionLengthLeft();
  } else if ( previousStepSize > 0.0) {
    // subtract NumberOfInteractionLengthLeft 
    SubtractNumberOfInteractionLengthLeft(previousStepSize);
  } else {
    // zero step
    //  DO NOTHING
  }

  // condition is set to "Not Forced"
  *condition = NotForced;

  // get mean free path
  currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition);

  G4double value;
  if (currentInteractionLength <DBL_MAX) {
    value = theNumberOfInteractionLengthLeft * currentInteractionLength;
  } else {
    value = DBL_MAX;
  }
#ifdef G4VERBOSE
  if (verboseLevel>1){
    G4cout << "G4VContinuousDiscreteProcess::PostStepGetPhysicalInteractionLength ";
    G4cout << "[ " << GetProcessName() << "]" <<G4endl;
    track.GetDynamicParticle()->DumpInfo();
    G4cout << " in Material  " <<  track.GetMaterial()->GetName() <<G4endl;
    G4cout << "InteractionLength= " << value/cm <<"[cm] " <<G4endl;
  }
#endif
  return value;
}


G4VParticleChange* G4VContinuousDiscreteProcess::PostStepDoIt(
                             const G4Track& ,
                             const G4Step&
                            )
{ 
//  clear  NumberOfInteractionLengthLeft
    ClearNumberOfInteractionLengthLeft();
    return pParticleChange;
}

G4VParticleChange* G4VContinuousDiscreteProcess::AlongStepDoIt(
                             const G4Track& ,
                             const G4Step&
                            )
{ 
//  clear  NumberOfInteractionLengthLeft
    ClearNumberOfInteractionLengthLeft();
    return pParticleChange;
}

G4double G4VContinuousDiscreteProcess::AlongStepGetPhysicalInteractionLength(
                             const G4Track& track,
                             G4double previousStepSize,
                             G4double currentMinimumStep,
                             G4double& currentSafety,
                             G4GPILSelection* selection
                            )
{
  // GPILSelection is set to defaule value of CandidateForSelection
  valueGPILSelection = CandidateForSelection;

  // get Step limit proposed by the process
  G4double steplength = GetContinuousStepLimit(track,previousStepSize,currentMinimumStep, currentSafety);

  // set return value for G4GPILSelection
  *selection = valueGPILSelection;

#ifdef G4VERBOSE
   if (verboseLevel>1){
    G4cout << "G4VContinuousDiscreteProcess::AlongStepGetPhysicalInteractionLength ";
    G4cout << "[ " << GetProcessName() << "]" <<G4endl;
    track.GetDynamicParticle()->DumpInfo();
    G4cout << " in Material  " <<  track.GetMaterial()->GetName() <<G4endl;
    G4cout << "IntractionLength= " << steplength/cm <<"[cm] " <<G4endl;
  }
#endif
  return  steplength ;
}

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