G4VContinuousDiscreteProcess.cc

Go to the documentation of this file.

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
//
// $Id: G4VContinuousDiscreteProcess.cc 71231 2013-06-12 13:06:28Z gcosmo $
//
// 
// --------------------------------------------------------------
//  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 ;
}