G4VRestDiscreteProcess.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 "G4VRestDiscreteProcess.hh"
#include "G4SystemOfUnits.hh"

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

G4VRestDiscreteProcess::G4VRestDiscreteProcess()
                   :G4VProcess("No Name Discrete Process") 
{
  G4Exception("G4VRestDiscreteProcess::G4VRestDiscreteProcess","ProcMan102",
          JustWarning,"Default constructor is called");
}

G4VRestDiscreteProcess::G4VRestDiscreteProcess(const G4String& aName , G4ProcessType aType)
                  : G4VProcess(aName, aType)
{
  enableAlongStepDoIt  = false;
}

G4VRestDiscreteProcess::~G4VRestDiscreteProcess()
{
}

G4VRestDiscreteProcess::G4VRestDiscreteProcess(G4VRestDiscreteProcess& right)
                  : G4VProcess(right)
{
}

G4double G4VRestDiscreteProcess::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 << "G4VRestDiscreteProcess::PostStepGetPhysicalInteractionLength ";
    G4cout << "[ " << GetProcessName() << "]" <<G4endl;
    track.GetDynamicParticle()->DumpInfo();
    G4cout << " in Material  " <<  track.GetMaterial()->GetName() <<G4endl;
    G4cout << "InteractionLength= " << value/cm <<"[cm] " <<G4endl;
  }
#endif
  return value;
}

G4VParticleChange* G4VRestDiscreteProcess::PostStepDoIt(
                 const G4Track& ,
                 const G4Step& 
                )
{ 
//  reset NumberOfInteractionLengthLeft
    ClearNumberOfInteractionLengthLeft();

    return pParticleChange;
}

G4double G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength(
                             const G4Track& track,
                 G4ForceCondition* condition
                )
{
  // beggining of tracking 
  ResetNumberOfInteractionLengthLeft();

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

  // get mean life time
  currentInteractionLength = GetMeanLifeTime(track, condition);

#ifdef G4VERBOSE
   if ((currentInteractionLength <0.0) || (verboseLevel>2)){
    G4cout << "G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength ";
    G4cout << "[ " << GetProcessName() << "]" <<G4endl;
    track.GetDynamicParticle()->DumpInfo();
    G4cout << " in Material  " << track.GetMaterial()->GetName() <<G4endl;
    G4cout << "MeanLifeTime = " << currentInteractionLength/ns << "[ns]" <<G4endl;
  }
#endif

  return theNumberOfInteractionLengthLeft * currentInteractionLength;
}


G4VParticleChange* G4VRestDiscreteProcess::AtRestDoIt( 
                 const G4Track&,
                 const G4Step& 
                )
{
//  clear NumberOfInteractionLengthLeft
    ClearNumberOfInteractionLengthLeft();

    return pParticleChange;
}