G4Navigator Class Reference

#include <G4Navigator.hh>

Inheritance diagram for G4Navigator:

Collaboration diagram for G4Navigator:

Classes
struct	G4SaveNavigatorState

Public Member Functions
	G4Navigator ()
virtual	~G4Navigator ()
virtual G4double	ComputeStep (const G4ThreeVector &pGlobalPoint, const G4ThreeVector &pDirection, const G4double pCurrentProposedStepLength, G4double &pNewSafety)
G4double	CheckNextStep (const G4ThreeVector &pGlobalPoint, const G4ThreeVector &pDirection, const G4double pCurrentProposedStepLength, G4double &pNewSafety)
virtual G4VPhysicalVolume *	ResetHierarchyAndLocate (const G4ThreeVector &point, const G4ThreeVector &direction, const G4TouchableHistory &h)
virtual G4VPhysicalVolume *	LocateGlobalPointAndSetup (const G4ThreeVector &point, const G4ThreeVector *direction=0, const G4bool pRelativeSearch=true, const G4bool ignoreDirection=true)
virtual void	LocateGlobalPointWithinVolume (const G4ThreeVector &position)
void	LocateGlobalPointAndUpdateTouchableHandle (const G4ThreeVector &position, const G4ThreeVector &direction, G4TouchableHandle &oldTouchableToUpdate, const G4bool RelativeSearch=true)
void	LocateGlobalPointAndUpdateTouchable (const G4ThreeVector &position, const G4ThreeVector &direction, G4VTouchable *touchableToUpdate, const G4bool RelativeSearch=true)
void	LocateGlobalPointAndUpdateTouchable (const G4ThreeVector &position, G4VTouchable *touchableToUpdate, const G4bool RelativeSearch=true)
void	SetGeometricallyLimitedStep ()
virtual G4double	ComputeSafety (const G4ThreeVector &globalpoint, const G4double pProposedMaxLength=DBL_MAX, const G4bool keepState=true)
virtual G4bool	RecheckDistanceToCurrentBoundary (const G4ThreeVector &pGlobalPoint, const G4ThreeVector &pDirection, const G4double CurrentProposedStepLength, G4double *prDistance, G4double *prNewSafety=0) const
G4VPhysicalVolume *	GetWorldVolume () const
void	SetWorldVolume (G4VPhysicalVolume *pWorld)
G4GRSVolume *	CreateGRSVolume () const
G4GRSSolid *	CreateGRSSolid () const
G4TouchableHistory *	CreateTouchableHistory () const
G4TouchableHistory *	CreateTouchableHistory (const G4NavigationHistory *) const
virtual G4TouchableHistoryHandle	CreateTouchableHistoryHandle () const
virtual G4ThreeVector	GetLocalExitNormal (G4bool *valid)
virtual G4ThreeVector	GetLocalExitNormalAndCheck (const G4ThreeVector &point, G4bool *valid)
virtual G4ThreeVector	GetGlobalExitNormal (const G4ThreeVector &point, G4bool *valid)
G4int	GetVerboseLevel () const
void	SetVerboseLevel (G4int level)
G4bool	IsActive () const
void	Activate (G4bool flag)
G4bool	EnteredDaughterVolume () const
G4bool	ExitedMotherVolume () const
void	CheckMode (G4bool mode)
G4bool	IsCheckModeActive () const
void	SetPushVerbosity (G4bool mode)
void	PrintState () const
const G4AffineTransform &	GetGlobalToLocalTransform () const
const G4AffineTransform	GetLocalToGlobalTransform () const
G4AffineTransform	GetMotherToDaughterTransform (G4VPhysicalVolume *dVolume, G4int dReplicaNo, EVolume dVolumeType)
void	ResetStackAndState ()
G4int	SeverityOfZeroStepping (G4int *noZeroSteps) const
G4ThreeVector	GetCurrentLocalCoordinate () const
G4ThreeVector	NetTranslation () const
G4RotationMatrix	NetRotation () const
void	EnableBestSafety (G4bool value=false)

Protected Member Functions
void	SetSavedState ()
void	RestoreSavedState ()
virtual void	ResetState ()
G4ThreeVector	ComputeLocalPoint (const G4ThreeVector &rGlobPoint) const
G4ThreeVector	ComputeLocalAxis (const G4ThreeVector &pVec) const
EVolume	VolumeType (const G4VPhysicalVolume *pVol) const
EVolume	CharacteriseDaughters (const G4LogicalVolume *pLog) const
G4int	GetDaughtersRegularStructureId (const G4LogicalVolume *pLog) const
virtual void	SetupHierarchy ()

Protected Attributes
G4double	kCarTolerance
G4double	fMinStep
G4double	fSqTol
G4NavigationHistory	fHistory
G4bool	fEnteredDaughter
G4bool	fExitedMother
G4bool	fWasLimitedByGeometry
G4ThreeVector	fStepEndPoint
G4ThreeVector	fLastStepEndPointLocal
G4int	fVerbose

Private Member Functions
	G4Navigator (const G4Navigator &)
G4Navigator &	operator= (const G4Navigator &)
void	ComputeStepLog (const G4ThreeVector &pGlobalpoint, G4double moveLenSq) const

Private Attributes
G4bool	fActive
G4bool	fLastTriedStepComputation
G4bool	fEntering
G4bool	fExiting
G4VPhysicalVolume *	fBlockedPhysicalVolume
G4int	fBlockedReplicaNo
G4ThreeVector	fLastLocatedPointLocal
G4bool	fLocatedOutsideWorld
G4bool	fValidExitNormal
G4ThreeVector	fExitNormal
G4ThreeVector	fGrandMotherExitNormal
G4bool	fChangedGrandMotherRefFrame
G4ThreeVector	fExitNormalGlobalFrame
G4bool	fCalculatedExitNormal
G4bool	fLastStepWasZero
G4bool	fLocatedOnEdge
G4int	fNumberZeroSteps
G4int	fActionThreshold_NoZeroSteps
G4int	fAbandonThreshold_NoZeroSteps
G4ThreeVector	fPreviousSftOrigin
G4double	fPreviousSafety
struct G4Navigator::G4SaveNavigatorState	fSaveState
G4VPhysicalVolume *	fTopPhysical
G4bool	fCheck
G4bool	fPushed
G4bool	fWarnPush
G4NormalNavigation	fnormalNav
G4VoxelNavigation	fvoxelNav
G4ParameterisedNavigation	fparamNav
G4ReplicaNavigation	freplicaNav
G4RegularNavigation	fregularNav
G4VoxelSafety *	fpVoxelSafety

Friends
std::ostream &	operator<< (std::ostream &os, const G4Navigator &n)

Detailed Description

Definition at line 73 of file G4Navigator.hh.

Constructor & Destructor Documentation

G4Navigator() [1/2]

G4Navigator::G4Navigator

(

)

Definition at line 52 of file G4Navigator.cc.

  : fWasLimitedByGeometry(false), fVerbose(0),
    fTopPhysical(0), fCheck(false), fPushed(false), fWarnPush(true)
{
  fActive= false; 
  fLastTriedStepComputation= false;

  ResetStackAndState();
    // Initialises also all 
    // - exit / entry flags
    // - flags & variables for exit normals
    // - zero step counters
    // - blocked volume 

  fActionThreshold_NoZeroSteps  = 10; 
  fAbandonThreshold_NoZeroSteps = 25; 

  kCarTolerance = G4GeometryTolerance::GetInstance()->GetSurfaceTolerance();
  fMinStep = 0.05*kCarTolerance;
  fSqTol = kCarTolerance*kCarTolerance;

  fregularNav.SetNormalNavigation( &fnormalNav );

  fStepEndPoint = G4ThreeVector( kInfinity, kInfinity, kInfinity ); 
  fLastStepEndPointLocal = G4ThreeVector( kInfinity, kInfinity, kInfinity ); 

  fpVoxelSafety= new G4VoxelSafety();
}

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~G4Navigator()

G4Navigator::~G4Navigator ( )

virtual

Definition at line 85 of file G4Navigator.cc.

{
  delete fpVoxelSafety;
}

G4Navigator() [2/2]

G4Navigator::G4Navigator ( const G4Navigator &  )

private

Member Function Documentation

Activate()

void G4Navigator::Activate ( G4bool  flag )

inline

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CharacteriseDaughters()

EVolume G4Navigator::CharacteriseDaughters ( const G4LogicalVolume *  pLog ) const

inlineprotected

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CheckMode()

void G4Navigator::CheckMode ( G4bool  mode )

inline

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CheckNextStep()

G4double G4Navigator::CheckNextStep	(	const G4ThreeVector &	pGlobalPoint,
		const G4ThreeVector &	pDirection,
		const G4double	pCurrentProposedStepLength,
		G4double &	pNewSafety
	)

Definition at line 1197 of file G4Navigator.cc.

{
  G4double step;

  // Save the state, for this parasitic call
  //
  SetSavedState();

  step = ComputeStep ( pGlobalpoint, 
                       pDirection,
                       pCurrentProposedStepLength, 
                       pNewSafety ); 

  // It is a parasitic call, so attempt to restore the key parts of the state
  //
  RestoreSavedState(); 
  // NOTE: the state of the current subnavigator is NOT restored.
  // ***> TODO: restore subnavigator state
  //            if( last_located)       Need Position of last location
  //            if( last_computed step) Need Endposition of last step
  
  return step; 
}

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ComputeLocalAxis()

G4ThreeVector G4Navigator::ComputeLocalAxis ( const G4ThreeVector &  pVec ) const

inlineprotected

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ComputeLocalPoint()

G4ThreeVector G4Navigator::ComputeLocalPoint ( const G4ThreeVector &  rGlobPoint ) const

inlineprotected

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ComputeSafety()

G4double G4Navigator::ComputeSafety ( const G4ThreeVector &  globalpoint, const G4double  pProposedMaxLength = DBL_MAX, const G4bool  keepState = true  )

virtual

Reimplemented in G4MultiNavigator, and G4ErrorPropagationNavigator.

Definition at line 1749 of file G4Navigator.cc.

{
  G4double newSafety = 0.0;

#ifdef G4DEBUG_NAVIGATION
  G4int oldcoutPrec = G4cout.precision(8);
  if( fVerbose > 0 )
  {
    G4cout << "*** G4Navigator::ComputeSafety: ***" << G4endl
           << "    Called at point: " << pGlobalpoint << G4endl;

    G4VPhysicalVolume  *motherPhysical = fHistory.GetTopVolume();
    G4cout << "    Volume = " << motherPhysical->GetName() 
           << " - Maximum length = " << pMaxLength << G4endl; 
    if( fVerbose >= 4 )
    {
       G4cout << "    ----- Upon entering Compute Safety:" << G4endl;
       PrintState();
    }
  }
#endif

  G4double distEndpointSq = (pGlobalpoint-fStepEndPoint).mag2(); 
  G4bool   stayedOnEndpoint  = distEndpointSq < kCarTolerance*kCarTolerance; 
  G4bool   endpointOnSurface = fEnteredDaughter || fExitedMother;

  if( endpointOnSurface && stayedOnEndpoint )
    {
#ifdef G4DEBUG_NAVIGATION
      if( fVerbose >= 2 )
      {
        G4cout << "    G4Navigator::ComputeSafety() finds that point - "
        << pGlobalpoint << " - is on surface " << G4endl;
        if( fEnteredDaughter ) { G4cout << "   entered new daughter volume"; }
        if( fExitedMother )    { G4cout << "   and exited previous volume."; }
        G4cout << G4endl;
        G4cout << " EndPoint was = " << fStepEndPoint << G4endl;
      }
#endif
      newSafety = 0.0;
      // return newSafety;
    }
  else // if( !(endpointOnSurface && stayedOnEndpoint) )
  {
    if (keepState)  { SetSavedState(); }
    
    // Pseudo-relocate to this point (updates voxel information only)
    //
    LocateGlobalPointWithinVolume( pGlobalpoint ); 
      // --->> DANGER: Side effects on sub-navigator voxel information <<---
      //       Could be replaced again by 'granular' calls to sub-navigator
      //       locates (similar side-effects, but faster.  
      //       Solutions:
      //        1) Re-locate (to where?)
      //        2) Insure that the methods using (G4ComputeStep?)
      //           does a relocation (if information is disturbed only ?)

#ifdef G4DEBUG_NAVIGATION
    if( fVerbose >= 2 )
    {
      G4cout << "  G4Navigator::ComputeSafety() relocates-in-volume to point: "
             << pGlobalpoint << G4endl;
    }
#endif 
    G4VPhysicalVolume *motherPhysical = fHistory.GetTopVolume();
    G4LogicalVolume *motherLogical = motherPhysical->GetLogicalVolume();
    G4SmartVoxelHeader* pVoxelHeader = motherLogical->GetVoxelHeader();
    G4ThreeVector localPoint = ComputeLocalPoint(pGlobalpoint);

    if ( fHistory.GetTopVolumeType()!=kReplica )
    {
      switch(CharacteriseDaughters(motherLogical))
      {
        case kNormal:
          if ( pVoxelHeader )
          {
#ifdef G4NEW_SAFETY
            G4double safetyTwo = fpVoxelSafety->ComputeSafety(localPoint,
                                           *motherPhysical, pMaxLength);
            newSafety= safetyTwo;   // Faster and best available
#else
            G4double safetyOldVoxel;
            safetyOldVoxel =
              fvoxelNav.ComputeSafety(localPoint,fHistory,pMaxLength);
            newSafety= safetyOldVoxel;
#endif
          }
          else
          {
            newSafety=fnormalNav.ComputeSafety(localPoint,fHistory,pMaxLength);
          }
          break;
        case kParameterised:
          if( GetDaughtersRegularStructureId(motherLogical) != 1 )
          {
            newSafety=fparamNav.ComputeSafety(localPoint,fHistory,pMaxLength);
          }
          else  // Regular structure
          {
            newSafety=fregularNav.ComputeSafety(localPoint,fHistory,pMaxLength);
          }
          break;
        case kReplica:
          G4Exception("G4Navigator::ComputeSafety()", "GeomNav0001",
                      FatalException, "Not applicable for replicated volumes.");
          break;
      }
    }
    else
    {
      newSafety = freplicaNav.ComputeSafety(pGlobalpoint, localPoint,
                                            fHistory, pMaxLength);
    }
    
    if (keepState)
    {
      RestoreSavedState();
      // This now overwrites the values of the Safety 'sphere' (correction)
    }
    
    // Remember last safety origin & value
    //
    // We overwrite the Safety 'sphere' - keeping old behaviour
    fPreviousSftOrigin = pGlobalpoint;
    fPreviousSafety = newSafety;
  }
  
#ifdef G4DEBUG_NAVIGATION
  if( fVerbose > 1 )
  {
    G4cout << "   ---- Exiting ComputeSafety  " << G4endl;
    if( fVerbose > 2 )  { PrintState(); }
    G4cout << "    Returned value of Safety = " << newSafety << G4endl;
  }
  G4cout.precision(oldcoutPrec);
#endif

  return newSafety;
}

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ComputeStep()

G4double G4Navigator::ComputeStep ( const G4ThreeVector &  pGlobalPoint, const G4ThreeVector &  pDirection, const G4double  pCurrentProposedStepLength, G4double &  pNewSafety  )

virtual

Reimplemented in G4MultiNavigator, and G4ErrorPropagationNavigator.

Definition at line 747 of file G4Navigator.cc.

{
  G4ThreeVector localDirection = ComputeLocalAxis(pDirection);
  G4double Step = kInfinity;
  G4VPhysicalVolume  *motherPhysical = fHistory.GetTopVolume();
  G4LogicalVolume *motherLogical = motherPhysical->GetLogicalVolume();

  // All state relating to exiting normals must be reset
  //
  fExitNormalGlobalFrame= G4ThreeVector( 0., 0., 0.);
    // Reset value - to erase its memory
  fChangedGrandMotherRefFrame= false;
    // Reset - used for local exit normal
  fGrandMotherExitNormal= G4ThreeVector( 0., 0., 0.); 
  fCalculatedExitNormal  = false;
    // Reset for new step

  static G4ThreadLocal G4int sNavCScalls=0;
  sNavCScalls++;

  fLastTriedStepComputation= true; 

#ifdef G4VERBOSE
  if( fVerbose > 0 )
  {
    G4cout << "*** G4Navigator::ComputeStep: ***" << G4endl; 
    G4cout << "    Volume = " << motherPhysical->GetName() 
           << " - Proposed step length = " << pCurrentProposedStepLength
           << G4endl; 
#ifdef G4DEBUG_NAVIGATION
    if( fVerbose >= 2 )
    {
      G4cout << "  Called with the arguments: " << G4endl
             << "  Globalpoint = " << std::setw(25) << pGlobalpoint << G4endl
             << "  Direction   = " << std::setw(25) << pDirection << G4endl;
      if( fVerbose >= 4 )
      {
        G4cout << "  ---- Upon entering : State" << G4endl;
        PrintState();
      }
    }
#endif
  }
#endif

  G4ThreeVector newLocalPoint = ComputeLocalPoint(pGlobalpoint);
  if( newLocalPoint != fLastLocatedPointLocal )
  {
    // Check whether the relocation is within safety
    //
    G4ThreeVector oldLocalPoint = fLastLocatedPointLocal;
    G4double moveLenSq = (newLocalPoint-oldLocalPoint).mag2();

    if ( moveLenSq >= fSqTol )
    {
#ifdef G4VERBOSE
      ComputeStepLog(pGlobalpoint, moveLenSq);
#endif
      // Relocate the point within the same volume
      //
      LocateGlobalPointWithinVolume( pGlobalpoint );
      fLastTriedStepComputation= true;     // Ensure that this is set again !!
    }
  }
  if ( fHistory.GetTopVolumeType()!=kReplica )
  {
    switch( CharacteriseDaughters(motherLogical) )
    {
      case kNormal:
        if ( motherLogical->GetVoxelHeader() )
        {
          Step = fvoxelNav.ComputeStep(fLastLocatedPointLocal,
                                       localDirection,
                                       pCurrentProposedStepLength,
                                       pNewSafety,
                                       fHistory,
                                       fValidExitNormal,
                                       fExitNormal,
                                       fExiting,
                                       fEntering,
                                       &fBlockedPhysicalVolume,
                                       fBlockedReplicaNo);
      
        }
        else
        {
          if( motherPhysical->GetRegularStructureId() == 0 )
          {
            Step = fnormalNav.ComputeStep(fLastLocatedPointLocal,
                                          localDirection,
                                          pCurrentProposedStepLength,
                                          pNewSafety,
                                          fHistory,
                                          fValidExitNormal,
                                          fExitNormal,
                                          fExiting,
                                          fEntering,
                                          &fBlockedPhysicalVolume,
                                          fBlockedReplicaNo);
          }
          else  // Regular (non-voxelised) structure
          {
            LocateGlobalPointAndSetup( pGlobalpoint, &pDirection, true, true );
            fLastTriedStepComputation= true; // Ensure that this is set again !!
            //
            // if physical process limits the step, the voxel will not be the
            // one given by ComputeStepSkippingEqualMaterials() and the local
            // point will be wrongly calculated.

            // There is a problem: when msc limits the step and the point is
            // assigned wrongly to phantom in previous step (while it is out
            // of the container volume). Then LocateGlobalPointAndSetup() has
            // reset the history topvolume to world.
            //
            if(fHistory.GetTopVolume()->GetRegularStructureId() == 0 )
            { 
              G4Exception("G4Navigator::ComputeStep()",
                          "GeomNav1001", JustWarning,
                "Point is relocated in voxels, while it should be outside!");
              Step = fnormalNav.ComputeStep(fLastLocatedPointLocal,
                                            localDirection,
                                            pCurrentProposedStepLength,
                                            pNewSafety,
                                            fHistory,
                                            fValidExitNormal,
                                            fExitNormal,
                                            fExiting,
                                            fEntering,
                                            &fBlockedPhysicalVolume,
                                            fBlockedReplicaNo);
            }
            else
            {
              Step = fregularNav.
                   ComputeStepSkippingEqualMaterials(fLastLocatedPointLocal,
                                                     localDirection,
                                                     pCurrentProposedStepLength,
                                                     pNewSafety,
                                                     fHistory,
                                                     fValidExitNormal,
                                                     fExitNormal,
                                                     fExiting,
                                                     fEntering,
                                                     &fBlockedPhysicalVolume,
                                                     fBlockedReplicaNo,
                                                     motherPhysical);
            }
          }
        }
        break;
      case kParameterised:
        if( GetDaughtersRegularStructureId(motherLogical) != 1 )
        {
          Step = fparamNav.ComputeStep(fLastLocatedPointLocal,
                                       localDirection,
                                       pCurrentProposedStepLength,
                                       pNewSafety,
                                       fHistory,
                                       fValidExitNormal,
                                       fExitNormal,
                                       fExiting,
                                       fEntering,
                                       &fBlockedPhysicalVolume,
                                       fBlockedReplicaNo);
        }
        else  // Regular structure
        {
          Step = fregularNav.ComputeStep(fLastLocatedPointLocal,
                                         localDirection,
                                         pCurrentProposedStepLength,
                                         pNewSafety,
                                         fHistory,
                                         fValidExitNormal,
                                         fExitNormal,
                                         fExiting,
                                         fEntering,
                                         &fBlockedPhysicalVolume,
                                         fBlockedReplicaNo);
        }
        break;
      case kReplica:
        G4Exception("G4Navigator::ComputeStep()", "GeomNav0001",
                    FatalException, "Not applicable for replicated volumes.");
        break;
    }
  }
  else
  {
    // In the case of a replica, it must handle the exiting
    // edge/corner problem by itself
    //
    G4bool exitingReplica = fExitedMother;
    G4bool calculatedExitNormal;
    Step = freplicaNav.ComputeStep(pGlobalpoint,
                                   pDirection,
                                   fLastLocatedPointLocal,
                                   localDirection,
                                   pCurrentProposedStepLength,
                                   pNewSafety,
                                   fHistory,
                                   fValidExitNormal,
                                   calculatedExitNormal,
                                   fExitNormal,
                                   exitingReplica,
                                   fEntering,
                                   &fBlockedPhysicalVolume,
                                   fBlockedReplicaNo);
    fExiting= exitingReplica;                          
    fCalculatedExitNormal= calculatedExitNormal;
  }

  // Remember last safety origin & value.
  //
  fPreviousSftOrigin = pGlobalpoint;
  fPreviousSafety = pNewSafety; 

  // Count zero steps - one can occur due to changing momentum at a boundary
  //                  - one, two (or a few) can occur at common edges between
  //                    volumes
  //                  - more than two is likely a problem in the geometry
  //                    description or the Navigation 

  // Rule of thumb: likely at an Edge if two consecutive steps are zero,
  //                because at least two candidate volumes must have been
  //                checked
  //
  fLocatedOnEdge   = fLastStepWasZero && (Step==0.0);
  fLastStepWasZero = (Step<fMinStep);
  if (fPushed)  { fPushed = fLastStepWasZero; }

  // Handle large number of consecutive zero steps
  //
  if ( fLastStepWasZero )
  {
    fNumberZeroSteps++;
#ifdef G4DEBUG_NAVIGATION
    if( fNumberZeroSteps > 1 )
    {
       G4cout << "G4Navigator::ComputeStep(): another 'zero' step, # "
              << fNumberZeroSteps
              << ", at " << pGlobalpoint
              << ", in volume " << motherPhysical->GetName()
              << ", nav-comp-step calls # " << sNavCScalls
              << ", Step= " << Step
              << G4endl;
    }
#endif
    if( fNumberZeroSteps > fActionThreshold_NoZeroSteps-1 )
    {
       // Act to recover this stuck track. Pushing it along direction
       //
       Step += 100*kCarTolerance;
#ifdef G4VERBOSE
       if ((!fPushed) && (fWarnPush))
       {
         std::ostringstream message;
         message << "Track stuck or not moving." << G4endl
                 << "          Track stuck, not moving for " 
                 << fNumberZeroSteps << " steps" << G4endl
                 << "          in volume -" << motherPhysical->GetName()
                 << "- at point " << pGlobalpoint
                 << " (local point " << newLocalPoint << ")" << G4endl
                 << "          direction: " << pDirection
                 << " (local direction: " << localDirection << ")." << G4endl
                 << "          Potential geometry or navigation problem !"
                 << G4endl
                 << "          Trying pushing it of " << Step << " mm ...";
         G4Exception("G4Navigator::ComputeStep()", "GeomNav1002",
                     JustWarning, message, "Potential overlap in geometry!");
       }
#endif
       fPushed = true;
    }
    if( fNumberZeroSteps > fAbandonThreshold_NoZeroSteps-1 )
    {
      // Must kill this stuck track
      //
      std::ostringstream message;
      message << "Stuck Track: potential geometry or navigation problem."
              << G4endl
              << "        Track stuck, not moving for " 
              << fNumberZeroSteps << " steps" << G4endl
              << "        in volume -" << motherPhysical->GetName()
              << "- at point " << pGlobalpoint << G4endl
              << "        direction: " << pDirection << ".";
#ifdef G4VERBOSE
      if ( fWarnPush )
      {
         motherPhysical->CheckOverlaps(5000, false);
      }
#endif
      G4Exception("G4Navigator::ComputeStep()", "GeomNav0003",
                  EventMustBeAborted, message);
    }
  }
  else
  {
    if (!fPushed)  fNumberZeroSteps = 0;
  }

  fEnteredDaughter = fEntering;   // I expect to enter a volume in this Step
  fExitedMother = fExiting;

  fStepEndPoint = pGlobalpoint
                + std::min(Step,pCurrentProposedStepLength) * pDirection;
  fLastStepEndPointLocal = fLastLocatedPointLocal + Step * localDirection; 

  if( fExiting )
  {
#ifdef G4DEBUG_NAVIGATION
    if( fVerbose > 2 )
    { 
      G4cout << " At G4Nav CompStep End - if(exiting) - fExiting= " << fExiting 
             << " fValidExitNormal = " << fValidExitNormal  << G4endl;
      G4cout << " fExitNormal= " << fExitNormal << G4endl;
    }
#endif

    if(fValidExitNormal || fCalculatedExitNormal)
    {
      if (  fHistory.GetTopVolumeType()!=kReplica )
      {
        // Convention: fExitNormal is in the 'grand-mother' coordinate system
        //
        fGrandMotherExitNormal= fExitNormal;
        fCalculatedExitNormal= true;
      }
      else
      {
        fGrandMotherExitNormal = fExitNormal;
      }
    }
    else
    {  
      // We must calculate the normal anyway (in order to have it if requested)
      //
      G4ThreeVector finalLocalPoint =
            fLastLocatedPointLocal + localDirection*Step;

      if (  fHistory.GetTopVolumeType()!=kReplica )
      {
        // Find normal in the 'mother' coordinate system
        //
        G4ThreeVector exitNormalMotherFrame=
           motherLogical->GetSolid()->SurfaceNormal(finalLocalPoint);
        
        // Transform it to the 'grand-mother' coordinate system
        //
        const G4RotationMatrix* mRot = motherPhysical->GetRotation();
        if( mRot )
        {
          fChangedGrandMotherRefFrame= true;           
          fGrandMotherExitNormal = (*mRot).inverse() * exitNormalMotherFrame;
        }
        else
        {
          fGrandMotherExitNormal = exitNormalMotherFrame;
        }

        // Do not set fValidExitNormal -- this signifies
        // that the solid is convex!
        //
        fCalculatedExitNormal= true;
      }
      else
      {
        fCalculatedExitNormal = false;
        //
        // Nothing can be done at this stage currently - to solve this
        // Replica Navigation must have calculated the normal for this case
        // already.
        // Cases: mother is not convex, and exit is at previous replica level

#ifdef G4DEBUG_NAVIGATION
        G4ExceptionDescription desc;

        desc << "Problem in ComputeStep:  Replica Navigation did not provide"
             << " valid exit Normal. " << G4endl;
        desc << " Do not know how calculate it in this case." << G4endl;
        desc << "  Location    = " << finalLocalPoint << G4endl;
        desc << "  Volume name = " << motherPhysical->GetName()
             << "  copy/replica No = " << motherPhysical->GetCopyNo() << G4endl;
        G4Exception("G4Navigator::ComputeStep()", "GeomNav0003",
                    JustWarning, desc, "Normal not available for exiting.");
#endif
      }
    }

    // Now transform it to the global reference frame !!
    //
    if( fValidExitNormal || fCalculatedExitNormal )
    {
      G4int depth= fHistory.GetDepth();
      if( depth > 0 )
      {
        G4AffineTransform GrandMotherToGlobalTransf =
          fHistory.GetTransform(depth-1).Inverse();
        fExitNormalGlobalFrame =
          GrandMotherToGlobalTransf.TransformAxis( fGrandMotherExitNormal );
      }
      else
      {
        fExitNormalGlobalFrame= fGrandMotherExitNormal;
      }
    }
    else
    {
      fExitNormalGlobalFrame= G4ThreeVector( 0., 0., 0.);
    }
  }

  if( (Step == pCurrentProposedStepLength) && (!fExiting) && (!fEntering) )
  {
    // This if Step is not really limited by the geometry.
    // The Navigator is obliged to return "infinity"
    //
    Step = kInfinity;
  }

#ifdef G4VERBOSE
  if( fVerbose > 1 )
  {
    if( fVerbose >= 4 )
    {
      G4cout << "    ----- Upon exiting :" << G4endl;
      PrintState();
    }
    G4cout << "  Returned step= " << Step;
    if( fVerbose > 5 )   G4cout << G4endl;
    if( Step == kInfinity )
    {
       G4cout << " Requested step= " << pCurrentProposedStepLength ;
       if( fVerbose > 5) G4cout << G4endl;
    }
    G4cout << "  Safety = " << pNewSafety << G4endl;
  }
#endif

  return Step;
}

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ComputeStepLog()

void G4Navigator::ComputeStepLog ( const G4ThreeVector &  pGlobalpoint, G4double  moveLenSq  ) const

private

Definition at line 2147 of file G4Navigator.cc.

{
  //  The following checks only make sense if the move is larger
  //  than the tolerance.

  const G4double fAccuracyForWarning   = kCarTolerance,
                 fAccuracyForException = 1000*kCarTolerance;

  G4ThreeVector OriginalGlobalpoint = fHistory.GetTopTransform().Inverse().
                                      TransformPoint(fLastLocatedPointLocal); 

  G4double shiftOriginSafSq = (fPreviousSftOrigin-pGlobalpoint).mag2();

  // Check that the starting point of this step is 
  // within the isotropic safety sphere of the last point
  // to a accuracy/precision  given by fAccuracyForWarning.
  //   If so give warning.
  //   If it fails by more than fAccuracyForException exit with error.
  //
  if( shiftOriginSafSq >= sqr(fPreviousSafety) )
  {
    G4double shiftOrigin = std::sqrt(shiftOriginSafSq);
    G4double diffShiftSaf = shiftOrigin - fPreviousSafety;

    if( diffShiftSaf > fAccuracyForWarning )
    {
      G4int oldcoutPrec= G4cout.precision(8);
      G4int oldcerrPrec= G4cerr.precision(10);
      std::ostringstream message, suggestion;
      message << "Accuracy error or slightly inaccurate position shift."
              << G4endl
              << "     The Step's starting point has moved " 
              << std::sqrt(moveLenSq)/mm << " mm " << G4endl
              << "     since the last call to a Locate method." << G4endl
              << "     This has resulted in moving " 
              << shiftOrigin/mm << " mm " 
              << " from the last point at which the safety " 
              << "     was calculated " << G4endl
              << "     which is more than the computed safety= " 
              << fPreviousSafety/mm << " mm  at that point." << G4endl
              << "     This difference is " 
              << diffShiftSaf/mm << " mm." << G4endl
              << "     The tolerated accuracy is "
              << fAccuracyForException/mm << " mm.";

      suggestion << " ";
      static G4ThreadLocal G4int warnNow = 0;
      if( ((++warnNow % 100) == 1) )
      {
        message << G4endl
               << "  This problem can be due to either " << G4endl
               << "    - a process that has proposed a displacement"
               << " larger than the current safety , or" << G4endl
               << "    - inaccuracy in the computation of the safety";
        suggestion << "We suggest that you " << G4endl
                   << "   - find i) what particle is being tracked, and "
                   << " ii) through what part of your geometry " << G4endl
                   << "      for example by re-running this event with "
                   << G4endl
                   << "         /tracking/verbose 1 "  << G4endl
                   << "    - check which processes you declare for"
                   << " this particle (and look at non-standard ones)"
                   << G4endl
                   << "   - in case, create a detailed logfile"
                   << " of this event using:" << G4endl
                   << "         /tracking/verbose 6 ";
      }
      G4Exception("G4Navigator::ComputeStep()",
                  "GeomNav1002", JustWarning,
                  message, G4String(suggestion.str()));
      G4cout.precision(oldcoutPrec);
      G4cerr.precision(oldcerrPrec);
    }
#ifdef G4DEBUG_NAVIGATION
    else
    {
      G4cerr << "WARNING - G4Navigator::ComputeStep()" << G4endl
             << "          The Step's starting point has moved "
             << std::sqrt(moveLenSq) << "," << G4endl
             << "          which has taken it to the limit of"
             << " the current safety. " << G4endl;
    }
#endif
  }
  G4double safetyPlus = fPreviousSafety + fAccuracyForException;
  if ( shiftOriginSafSq > sqr(safetyPlus) )
  {
    std::ostringstream message;
    message << "May lead to a crash or unreliable results." << G4endl
            << "        Position has shifted considerably without"
            << " notifying the navigator !" << G4endl
            << "        Tolerated safety: " << safetyPlus << G4endl
            << "        Computed shift  : " << shiftOriginSafSq;
    G4Exception("G4Navigator::ComputeStep()", "GeomNav1002",
                JustWarning, message);
  }
}

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CreateGRSSolid()

G4GRSSolid* G4Navigator::CreateGRSSolid ( ) const

inline

CreateGRSVolume()

G4GRSVolume* G4Navigator::CreateGRSVolume ( ) const

inline

CreateTouchableHistory() [1/2]

G4TouchableHistory* G4Navigator::CreateTouchableHistory ( ) const

inline

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CreateTouchableHistory() [2/2]

G4TouchableHistory* G4Navigator::CreateTouchableHistory ( const G4NavigationHistory *  ) const

inline

CreateTouchableHistoryHandle()

G4TouchableHistoryHandle G4Navigator::CreateTouchableHistoryHandle ( ) const

virtual

Reimplemented in G4MultiNavigator.

Definition at line 2075 of file G4Navigator.cc.

{
  return G4TouchableHistoryHandle( CreateTouchableHistory() );
}

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EnableBestSafety()

void G4Navigator::EnableBestSafety ( G4bool  value = false )

inline

EnteredDaughterVolume()

G4bool G4Navigator::EnteredDaughterVolume ( ) const

inline

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ExitedMotherVolume()

G4bool G4Navigator::ExitedMotherVolume ( ) const

inline

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GetCurrentLocalCoordinate()

G4ThreeVector G4Navigator::GetCurrentLocalCoordinate ( ) const

inline

GetDaughtersRegularStructureId()

G4int G4Navigator::GetDaughtersRegularStructureId ( const G4LogicalVolume *  pLog ) const

inlineprotected

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GetGlobalExitNormal()

G4ThreeVector G4Navigator::GetGlobalExitNormal ( const G4ThreeVector &  point, G4bool *  valid  )

virtual

Reimplemented in G4MultiNavigator, and G4ErrorPropagationNavigator.

Definition at line 1574 of file G4Navigator.cc.

{
  G4bool         validNormal;
  G4ThreeVector  localNormal, globalNormal;
 
  G4bool usingStored = fCalculatedExitNormal && (
       ( fLastTriedStepComputation && fExiting ) // Just calculated it
       ||                                        // No locate in between
       ( !fLastTriedStepComputation
          && (IntersectPointGlobal-fStepEndPoint).mag2() < 10.0*fSqTol ) );
           // Calculated it 'just' before & then called locate
           // but it did not move position
  
  if( usingStored )
  {
    // This was computed in last call to ComputeStep
    // and only if it arrived at boundary
    //
    globalNormal = fExitNormalGlobalFrame; 
    G4double  normMag2 = globalNormal.mag2(); 
    if( std::fabs ( normMag2 - 1.0 ) < perMillion )  // Value is good 
    {
       *pNormalCalculated = true; // ComputeStep always computes it if Exiting
                                  // (fExiting==true)
    }
    else
    {
       G4ExceptionDescription message;
       message.precision(10); 
       message << " WARNING> Expected normal-global-frame to be valid, "
               << " i.e. a unit vector!" << G4endl
               << "  - but |normal|   = "  << std::sqrt(normMag2)
               << "  - and |normal|^2 = "  << normMag2 << G4endl
               << " which differs from 1.0 by " << normMag2 - 1.0 << G4endl
               << "   n = " << fExitNormalGlobalFrame << G4endl
               << " Global point: " << IntersectPointGlobal << G4endl
               << " Volume: " << fHistory.GetTopVolume()->GetName() << G4endl;
#ifdef G4VERBOSE
       G4LogicalVolume* candLog = fHistory.GetTopVolume()->GetLogicalVolume();
       if ( candLog )
       {
         message << " Solid: " << candLog->GetSolid()->GetName()
                 << ", Type: " << candLog->GetSolid()->GetEntityType() << G4endl
                 << *candLog->GetSolid() << G4endl;
       }
#endif
       message << "============================================================"
               << G4endl;
       G4int oldVerbose = fVerbose; 
       fVerbose=4; 
       message << "   State of Navigator: " << G4endl;
       message << *this << G4endl;
       fVerbose = oldVerbose; 
       message << "============================================================"
               << G4endl;

       G4Exception("G4Navigator::GetGlobalExitNormal()",
                   "GeomNav0003",JustWarning, message,
              "Value obtained from stored global-normal is not a unit vector.");

       // (Re)Compute it now -- as either it was not computed, or it is wrong.
       //
       localNormal = GetLocalExitNormalAndCheck(IntersectPointGlobal,
                                                &validNormal);
       *pNormalCalculated = fCalculatedExitNormal;

       G4AffineTransform localToGlobal = GetLocalToGlobalTransform();
       globalNormal = localToGlobal.TransformAxis( localNormal );
    }
  }
  else
  {
    localNormal = GetLocalExitNormalAndCheck(IntersectPointGlobal,&validNormal);
    *pNormalCalculated = fCalculatedExitNormal;

#ifdef G4DEBUG_NAVIGATION
    usingStored= false;

    if( (!validNormal) && !fCalculatedExitNormal )
    {
      G4ExceptionDescription edN;
      edN << "  Calculated = " << fCalculatedExitNormal << G4endl;
      edN << "   Entering= "  << fEntering << G4endl;
      G4int oldVerbose= this->GetVerboseLevel();
      this->SetVerboseLevel(4);
      edN << "   State of Navigator: " << G4endl;
      edN << *this << G4endl;
      this->SetVerboseLevel( oldVerbose );
       
      G4Exception("G4Navigator::GetGlobalExitNormal()",
                  "GeomNav0003", JustWarning, edN,
                  "LocalExitNormalAndCheck() did not calculate Normal.");
     }
#endif
     
     G4double localMag2= localNormal.mag2();
     if( validNormal && (std::fabs(localMag2-1.0)) > CLHEP::perMillion )
     {
       G4ExceptionDescription edN;
       edN.precision(10); 
       edN << "G4Navigator::GetGlobalExitNormal: "
           << "  Using Local Normal - from call to GetLocalExitNormalAndCheck. "
           << G4endl
           << "  Local  Exit Normal : " << " || = " << std::sqrt(localMag2) 
           << " vec = " << localNormal << G4endl
           << "  Global Exit Normal : " << " || = " << globalNormal.mag() 
           << " vec = " << globalNormal << G4endl
           << "  Global point: " << IntersectPointGlobal << G4endl;
       edN << "  Calculated It      = " << fCalculatedExitNormal << G4endl
           << "  Volume: " << fHistory.GetTopVolume()->GetName() << G4endl;
#ifdef G4VERBOSE
       G4LogicalVolume* candLog = fHistory.GetTopVolume()->GetLogicalVolume();
       if ( candLog )
       {
         edN << "  Solid: " << candLog->GetSolid()->GetName()
             << ", Type: " << candLog->GetSolid()->GetEntityType() << G4endl
             << *candLog->GetSolid();
       }
#endif
       G4Exception("G4Navigator::GetGlobalExitNormal()",
                   "GeomNav0003",JustWarning, edN,
                   "Value obtained from new local *solid* is incorrect.");
       localNormal = localNormal.unit(); // Should we correct it ??
     }
     G4AffineTransform localToGlobal = GetLocalToGlobalTransform();
     globalNormal = localToGlobal.TransformAxis( localNormal );
  }

#ifdef G4DEBUG_NAVIGATION
  if( usingStored )
  {
    G4ThreeVector globalNormAgn; 

    localNormal= GetLocalExitNormalAndCheck(IntersectPointGlobal, &validNormal);
    
    G4AffineTransform localToGlobal = GetLocalToGlobalTransform();
    globalNormAgn = localToGlobal.TransformAxis( localNormal );
    
    // Check the value computed against fExitNormalGlobalFrame
    G4ThreeVector diffNorm = globalNormAgn - fExitNormalGlobalFrame;
    if( diffNorm.mag2() > perMillion*CLHEP::perMillion)
    {
      G4ExceptionDescription edDfn;
      edDfn << "Found difference in normals in case of exiting mother "
            << "- when Get is called after ComputingStep " << G4endl;
      edDfn << "  Magnitude of diff =      " << diffNorm.mag() << G4endl;
      edDfn << "  Normal stored (Global)     = " << fExitNormalGlobalFrame
            << G4endl;
      edDfn << "  Global Computed from Local = " << globalNormAgn << G4endl;
      G4Exception("G4Navigator::GetGlobalExitNormal()", "GeomNav0003",
                  JustWarning, edDfn);
    }
  }
#endif

  // Synchronise stored global exit normal as possibly re-computed here
  //
  fExitNormalGlobalFrame = globalNormal;

  return globalNormal;
}

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GetGlobalToLocalTransform()

const G4AffineTransform& G4Navigator::GetGlobalToLocalTransform ( ) const

inline

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GetLocalExitNormal()

G4ThreeVector G4Navigator::GetLocalExitNormal ( G4bool *  valid )

virtual

Reimplemented in G4MultiNavigator.

Definition at line 1329 of file G4Navigator.cc.

{
  G4ThreeVector    ExitNormal(0.,0.,0.);
  G4VSolid        *currentSolid=0;
  G4LogicalVolume *candidateLogical;
  if ( fLastTriedStepComputation ) 
  {
    // use fLastLocatedPointLocal and next candidate volume
    //
    G4ThreeVector nextSolidExitNormal(0.,0.,0.);

    if( fEntering && (fBlockedPhysicalVolume!=0) ) 
    { 
      candidateLogical= fBlockedPhysicalVolume->GetLogicalVolume();
      if( candidateLogical ) 
      {
        // fLastStepEndPointLocal is in the coordinates of the mother
        // we need it in the daughter's coordinate system.

        // The following code should also work in case of Replica
        {
          // First transform fLastLocatedPointLocal to the new daughter
          // coordinates
          //
          G4AffineTransform MotherToDaughterTransform=
            GetMotherToDaughterTransform( fBlockedPhysicalVolume, 
                                          fBlockedReplicaNo,
                                          VolumeType(fBlockedPhysicalVolume) ); 
          G4ThreeVector daughterPointOwnLocal= 
            MotherToDaughterTransform.TransformPoint( fLastStepEndPointLocal ); 

          // OK if it is a parameterised volume
          //
          EInside  inSideIt; 
          G4bool   onSurface;
          G4double safety= -1.0; 
          currentSolid= candidateLogical->GetSolid(); 
          inSideIt  =  currentSolid->Inside(daughterPointOwnLocal); 
          onSurface =  (inSideIt == kSurface); 
          if( ! onSurface ) 
          {
            if( inSideIt == kOutside )
            {
              safety = (currentSolid->DistanceToIn(daughterPointOwnLocal)); 
              onSurface = safety < 100.0 * kCarTolerance; 
            }
            else if (inSideIt == kInside )
            {
              safety = (currentSolid->DistanceToOut(daughterPointOwnLocal)); 
              onSurface = safety < 100.0 * kCarTolerance; 
            }
          }

          if( onSurface ) 
          {
            nextSolidExitNormal =
              currentSolid->SurfaceNormal(daughterPointOwnLocal); 
 
            // Entering the solid ==> opposite
            //
            ExitNormal = -nextSolidExitNormal;
            fCalculatedExitNormal= true;
          }
          else
          {
#ifdef G4VERBOSE
            if(( fVerbose == 1 ) && ( fCheck ))
            {
              std::ostringstream message;
              message << "Point not on surface ! " << G4endl
                      << "  Point           = "
                      << daughterPointOwnLocal << G4endl 
                      << "  Physical volume = "
                      << fBlockedPhysicalVolume->GetName() << G4endl
                      << "  Logical volume  = "
                      << candidateLogical->GetName() << G4endl
                      << "  Solid           = " << currentSolid->GetName() 
                      << "  Type            = "
                      << currentSolid->GetEntityType() << G4endl
                      << *currentSolid << G4endl;
              if( inSideIt == kOutside )
              { 
                message << "Point is Outside. " << G4endl
                        << "  Safety (from outside) = " << safety << G4endl;
              }
              else // if( inSideIt == kInside ) 
              {
                message << "Point is Inside. " << G4endl
                        << "  Safety (from inside) = " << safety << G4endl;
              }
              G4Exception("G4Navigator::GetLocalExitNormal()", "GeomNav1001",
                          JustWarning, message);
            }
#endif
          }
          *valid = onSurface;   //   was =true;
        }
      }
    }
    else if ( fExiting ) 
    {
      ExitNormal = fGrandMotherExitNormal;
      *valid = true;
      fCalculatedExitNormal= true;  // Should be true already
    }
    else  // i.e.  ( fBlockedPhysicalVolume == 0 )
    {
      *valid = false;
      G4Exception("G4Navigator::GetLocalExitNormal()",
                  "GeomNav0003", JustWarning, 
                  "Incorrect call to GetLocalSurfaceNormal." );
    }
  }
  else //  ( ! fLastTriedStepComputation ) ie. last call was to Locate
  {
    if ( EnteredDaughterVolume() )
    {
      G4VSolid* daughterSolid =fHistory.GetTopVolume()->GetLogicalVolume()
                                                      ->GetSolid();
      ExitNormal= -(daughterSolid->SurfaceNormal(fLastLocatedPointLocal));
      if( std::fabs(ExitNormal.mag2()-1.0 ) > CLHEP::perMillion )
      {
        G4ExceptionDescription desc;
        desc << " Parameters of solid: " << *daughterSolid
             << " Point for surface = " << fLastLocatedPointLocal << std::endl;
        G4Exception("G4Navigator::GetLocalExitNormal()",
                    "GeomNav0003", FatalException, desc,
                    "Surface Normal returned by Solid is not a Unit Vector." );
      }
      fCalculatedExitNormal= true;
      *valid = true;
    }
    else
    {
      if( fExitedMother )
      {
        ExitNormal = fGrandMotherExitNormal;
        *valid = true;
        fCalculatedExitNormal= true;
      }
      else  // We are not at a boundary. ExitNormal remains (0,0,0)
      { 
        *valid = false;
        fCalculatedExitNormal= false; 
        G4ExceptionDescription message; 
        message << "Function called when *NOT* at a Boundary." << G4endl;
        message << "Exit Normal not calculated." << G4endl;
        G4Exception("G4Navigator::GetLocalExitNormal()",
                    "GeomNav0003", JustWarning, message); 
      }
    }
  }
  return ExitNormal;
}

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GetLocalExitNormalAndCheck()

G4ThreeVector G4Navigator::GetLocalExitNormalAndCheck ( const G4ThreeVector &  point, G4bool *  valid  )

virtual

Reimplemented in G4MultiNavigator.

Definition at line 1538 of file G4Navigator.cc.

{
#ifdef G4DEBUG_NAVIGATION
  // Check Current point against expected 'local' value
  //
  if ( fLastTriedStepComputation ) 
  {
    G4ThreeVector ExpectedBoundaryPointLocal;

    const G4AffineTransform& GlobalToLocal= GetGlobalToLocalTransform(); 
    ExpectedBoundaryPointLocal =
      GlobalToLocal.TransformPoint( ExpectedBoundaryPointGlobal ); 

    // Add here:  Comparison against expected position,
    //            i.e. the endpoint of ComputeStep
  }
#endif
  
  return GetLocalExitNormal( pValid); 
}

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GetLocalToGlobalTransform()

const G4AffineTransform G4Navigator::GetLocalToGlobalTransform ( ) const

inline

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GetMotherToDaughterTransform()

G4AffineTransform G4Navigator::GetMotherToDaughterTransform	(	G4VPhysicalVolume *	dVolume,
		G4int	dReplicaNo,
		EVolume	dVolumeType
	)

Definition at line 1491 of file G4Navigator.cc.

{
  switch (enteringVolumeType)
  {
    case kNormal:  // Nothing is needed to prepare the transformation
      break;       // It is stored already in the physical volume (placement)
    case kReplica: // Sets the transform in the Replica - tbc
      G4Exception("G4Navigator::GetMotherToDaughterTransform()",
                  "GeomNav0001", FatalException,
                  "Method NOT Implemented yet for replica volumes.");
      break;
    case kParameterised:
      if( pEnteringPhysVol->GetRegularStructureId() == 0 )
      {
        G4VPVParameterisation *pParam =
          pEnteringPhysVol->GetParameterisation();
        G4VSolid* pSolid =
          pParam->ComputeSolid(enteringReplicaNo, pEnteringPhysVol);
        pSolid->ComputeDimensions(pParam, enteringReplicaNo, pEnteringPhysVol);

        // Sets the transform in the Parameterisation
        //
        pParam->ComputeTransformation(enteringReplicaNo, pEnteringPhysVol);

        // Set the correct solid and material in Logical Volume
        //
        G4LogicalVolume* pLogical = pEnteringPhysVol->GetLogicalVolume();
        pLogical->SetSolid( pSolid );
      }
      break;
  }
  return G4AffineTransform(pEnteringPhysVol->GetRotation(), 
                           pEnteringPhysVol->GetTranslation()).Invert(); 
}

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GetVerboseLevel()

G4int G4Navigator::GetVerboseLevel ( ) const

inline

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GetWorldVolume()

G4VPhysicalVolume* G4Navigator::GetWorldVolume ( ) const

inline

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IsActive()

G4bool G4Navigator::IsActive ( ) const

inline

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IsCheckModeActive()

G4bool G4Navigator::IsCheckModeActive ( ) const

inline

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LocateGlobalPointAndSetup()

G4VPhysicalVolume * G4Navigator::LocateGlobalPointAndSetup ( const G4ThreeVector &  point, const G4ThreeVector *  direction = 0, const G4bool  pRelativeSearch = true, const G4bool  ignoreDirection = true  )

virtual

Reimplemented in G4MultiNavigator.

Definition at line 125 of file G4Navigator.cc.

{
  G4bool notKnownContained=true, noResult;
  G4VPhysicalVolume *targetPhysical;
  G4LogicalVolume *targetLogical;
  G4VSolid *targetSolid=0;
  G4ThreeVector localPoint, globalDirection;
  EInside insideCode;
  
  G4bool considerDirection = (!ignoreDirection) || fLocatedOnEdge;

  fLastTriedStepComputation=   false;   
  fChangedGrandMotherRefFrame= false;  // For local exit normal
   
  if( considerDirection && pGlobalDirection != 0 )
  {
    globalDirection=*pGlobalDirection;
  }

#ifdef G4VERBOSE
  if( fVerbose > 2 )
  {
    G4int oldcoutPrec = G4cout.precision(8);
    G4cout << "*** G4Navigator::LocateGlobalPointAndSetup: ***" << G4endl; 
    G4cout << "    Called with arguments: " << G4endl
           << "        Globalpoint = " << globalPoint << G4endl
           << "        RelativeSearch = " << relativeSearch  << G4endl;
    if( fVerbose >= 4 )
    {
      G4cout << "    ----- Upon entering:" << G4endl;
      PrintState();
    }
    G4cout.precision(oldcoutPrec);
  }
#endif

  G4int noLevelsExited=0 ;
  G4int noLevelsEntered= 0;

  if ( !relativeSearch )
  {
    ResetStackAndState();
  }
  else
  {
    if ( fWasLimitedByGeometry )
    {
      fWasLimitedByGeometry = false;
      fEnteredDaughter = fEntering;   // Remember
      fExitedMother = fExiting;       // Remember
      if ( fExiting )
      {
        noLevelsExited++;  // count this first level entered too

        if ( fHistory.GetDepth() )
        {
          fBlockedPhysicalVolume = fHistory.GetTopVolume();
          fBlockedReplicaNo = fHistory.GetTopReplicaNo();
          fHistory.BackLevel();
        }
        else
        {
          fLastLocatedPointLocal = localPoint;
          fLocatedOutsideWorld = true;
          fBlockedPhysicalVolume = 0;   // to be sure
          fBlockedReplicaNo = -1;
          fEntering = false;            // No longer 
          fEnteredDaughter = false; 
          fExitedMother = true;      // ??
          
          return 0;           // Have exited world volume
        }
        // A fix for the case where a volume is "entered" at an edge
        // and a coincident surface exists outside it.
        //  - This stops it from exiting further volumes and cycling
        //  - However ReplicaNavigator treats this case itself
        //
        // assert( fBlockedPhysicalVolume!=0 );

        // Expect to be on edge => on surface
        //
        if ( fLocatedOnEdge && (VolumeType(fBlockedPhysicalVolume)!=kReplica ))
        { 
          fExiting= false;
          // Consider effect on Exit Normal !?
        }
      }
      else
        if ( fEntering )
        {
          // assert( fBlockedPhysicalVolume!=0 );

          noLevelsEntered++;   // count the first level entered too

          switch (VolumeType(fBlockedPhysicalVolume))
          {
            case kNormal:
              fHistory.NewLevel(fBlockedPhysicalVolume, kNormal,
                                fBlockedPhysicalVolume->GetCopyNo());
              break;
            case kReplica:
              freplicaNav.ComputeTransformation(fBlockedReplicaNo,
                                                fBlockedPhysicalVolume);
              fHistory.NewLevel(fBlockedPhysicalVolume, kReplica,
                                fBlockedReplicaNo);
              fBlockedPhysicalVolume->SetCopyNo(fBlockedReplicaNo);
              break;
            case kParameterised:
              if( fBlockedPhysicalVolume->GetRegularStructureId() == 0 )
              {
                G4VSolid *pSolid;
                G4VPVParameterisation *pParam;
                G4TouchableHistory parentTouchable( fHistory );
                pParam = fBlockedPhysicalVolume->GetParameterisation();
                pSolid = pParam->ComputeSolid(fBlockedReplicaNo,
                                              fBlockedPhysicalVolume);
                pSolid->ComputeDimensions(pParam, fBlockedReplicaNo,
                                          fBlockedPhysicalVolume);
                pParam->ComputeTransformation(fBlockedReplicaNo,
                                              fBlockedPhysicalVolume);
                fHistory.NewLevel(fBlockedPhysicalVolume, kParameterised,
                                  fBlockedReplicaNo);
                fBlockedPhysicalVolume->SetCopyNo(fBlockedReplicaNo);
                //
                // Set the correct solid and material in Logical Volume
                //
                G4LogicalVolume *pLogical;
                pLogical = fBlockedPhysicalVolume->GetLogicalVolume();
                pLogical->SetSolid( pSolid );
                pLogical->UpdateMaterial(pParam ->
                  ComputeMaterial(fBlockedReplicaNo,
                                  fBlockedPhysicalVolume, 
                                  &parentTouchable));
              }
              break;
          }
          fEntering = false;
          fBlockedPhysicalVolume = 0;
          localPoint = fHistory.GetTopTransform().TransformPoint(globalPoint);
          notKnownContained = false;
        }
    }
    else
    {
      fBlockedPhysicalVolume = 0;
      fEntering = false;
      fEnteredDaughter = false;  // Full Step was not taken, did not enter
      fExiting = false;
      fExitedMother = false;     // Full Step was not taken, did not exit
    }
  }
  //
  // Search from top of history up through geometry until
  // containing volume found:
  // If on 
  // o OUTSIDE - Back up level, not/no longer exiting volumes
  // o SURFACE and EXITING - Back up level, setting new blocking no.s
  // else
  // o containing volume found
  //

  while (notKnownContained)  // Loop checking, 07.10.2016, J.Apostolakis
  {
    if ( fHistory.GetTopVolumeType()!=kReplica )
    {
      targetSolid = fHistory.GetTopVolume()->GetLogicalVolume()->GetSolid();
      localPoint = fHistory.GetTopTransform().TransformPoint(globalPoint);
      insideCode = targetSolid->Inside(localPoint);
#ifdef G4VERBOSE
      if(( fVerbose == 1 ) && ( fCheck ))
      {
         G4String solidResponse = "-kInside-";
         if (insideCode == kOutside)
           solidResponse = "-kOutside-";
         else if (insideCode == kSurface)
           solidResponse = "-kSurface-";
         G4cout << "*** G4Navigator::LocateGlobalPointAndSetup(): ***" << G4endl
                << "    Invoked Inside() for solid: " << targetSolid->GetName()
                << ". Solid replied: " << solidResponse << G4endl
                << "    For local point p: " << localPoint << G4endl;
      }
#endif
    }
    else
    {
      insideCode = freplicaNav.BackLocate(fHistory, globalPoint, localPoint,
                                          fExiting, notKnownContained);
      // !CARE! if notKnownContained returns false then the point is within
      // the containing placement volume of the replica(s). If insidecode
      // will result in the history being backed up one level, then the
      // local point returned is the point in the system of this new level
    }


    if ( insideCode==kOutside )
    {
      noLevelsExited++; 
      if ( fHistory.GetDepth() )
      {
        fBlockedPhysicalVolume = fHistory.GetTopVolume();
        fBlockedReplicaNo = fHistory.GetTopReplicaNo();
        fHistory.BackLevel();
        fExiting = false;

        if( noLevelsExited > 1 )
        {
          // The first transformation was done by the sub-navigator
          //
          const G4RotationMatrix* mRot = fBlockedPhysicalVolume->GetRotation();
          if( mRot )
          { 
            fGrandMotherExitNormal *= (*mRot).inverse();
            fChangedGrandMotherRefFrame= true;
          }
        }
      }
      else
      {
        fLastLocatedPointLocal = localPoint;
        fLocatedOutsideWorld = true;
          // No extra transformation for ExitNormal - is in frame of Top Volume
        return 0;         // Have exited world volume
      }
    }
    else
      if ( insideCode==kSurface )
      {
        G4bool isExiting = fExiting;
        if( (!fExiting)&&considerDirection )
        {
          // Figure out whether we are exiting this level's volume
          // by using the direction
          //
          G4bool directionExiting = false;
          G4ThreeVector localDirection =
              fHistory.GetTopTransform().TransformAxis(globalDirection);

          // Make sure localPoint in correct reference frame
          //     ( Was it already correct ? How ? )
          //
          localPoint= fHistory.GetTopTransform().TransformPoint(globalPoint);
          if ( fHistory.GetTopVolumeType()!=kReplica )
          {
            G4ThreeVector normal = targetSolid->SurfaceNormal(localPoint);
            directionExiting = normal.dot(localDirection) > 0.0;
            isExiting = isExiting || directionExiting;
          }
        }
        if( isExiting )
        {
          noLevelsExited++; 
          if ( fHistory.GetDepth() )
          {
            fBlockedPhysicalVolume = fHistory.GetTopVolume();
            fBlockedReplicaNo = fHistory.GetTopReplicaNo();
            fHistory.BackLevel();
            //
            // Still on surface but exited volume not necessarily convex
            //
            fValidExitNormal = false;

            if( noLevelsExited > 1 )
            {
              // The first transformation was done by the sub-navigator
              //
              const G4RotationMatrix* mRot =
                    fBlockedPhysicalVolume->GetRotation();
              if( mRot )
              { 
                fGrandMotherExitNormal *= (*mRot).inverse();
                fChangedGrandMotherRefFrame= true;
              }
            }
          } 
          else
          {
            fLastLocatedPointLocal = localPoint;
            fLocatedOutsideWorld = true;
              // No extra transformation for ExitNormal, is in frame of Top Vol
            return 0;          // Have exited world volume
          }
        }
        else
        {
          notKnownContained=false;
        }
      }
      else
      {
        notKnownContained=false;
      }
  }  // END while (notKnownContained)
  //
  // Search downwards until deepest containing volume found,
  // blocking fBlockedPhysicalVolume/BlockedReplicaNum
  //
  // 3 Cases:
  //
  // o Parameterised daughters
  //   =>Must be one G4PVParameterised daughter & voxels
  // o Positioned daughters & voxels
  // o Positioned daughters & no voxels

  noResult = true;  // noResult should be renamed to
                    // something like enteredLevel, as that is its meaning.
  do
  {
    // Determine `type' of current mother volume
    //
    targetPhysical = fHistory.GetTopVolume();
    if (!targetPhysical) { break; }
    targetLogical = targetPhysical->GetLogicalVolume();
    switch( CharacteriseDaughters(targetLogical) )
    {
      case kNormal:
        if ( targetLogical->GetVoxelHeader() )  // use optimised navigation
        {
          noResult = fvoxelNav.LevelLocate(fHistory,
                                           fBlockedPhysicalVolume,
                                           fBlockedReplicaNo,
                                           globalPoint,
                                           pGlobalDirection,
                                           considerDirection,
                                           localPoint);
        }
        else                       // do not use optimised navigation
        {
          noResult = fnormalNav.LevelLocate(fHistory,
                                            fBlockedPhysicalVolume,
                                            fBlockedReplicaNo,
                                            globalPoint,
                                            pGlobalDirection,
                                            considerDirection,
                                            localPoint);
        }
        break;
      case kReplica:
        noResult = freplicaNav.LevelLocate(fHistory,
                                           fBlockedPhysicalVolume,
                                           fBlockedReplicaNo,
                                           globalPoint,
                                           pGlobalDirection,
                                           considerDirection,
                                           localPoint);
        break;
      case kParameterised:
        if( GetDaughtersRegularStructureId(targetLogical) != 1 )
        {
          noResult = fparamNav.LevelLocate(fHistory,
                                           fBlockedPhysicalVolume,
                                           fBlockedReplicaNo,
                                           globalPoint,
                                           pGlobalDirection,
                                           considerDirection,
                                           localPoint);
        }
        else  // Regular structure
        {
          noResult = fregularNav.LevelLocate(fHistory,
                                             fBlockedPhysicalVolume,
                                             fBlockedReplicaNo,
                                             globalPoint,
                                             pGlobalDirection,
                                             considerDirection,
                                             localPoint);
        }
        break;
    }

    // LevelLocate returns true if it finds a daughter volume 
    // in which globalPoint is inside (or on the surface).

    if ( noResult )
    {
      noLevelsEntered++;
      
      // Entering a daughter after ascending
      //
      // The blocked volume is no longer valid - it was for another level
      //
      fBlockedPhysicalVolume = 0;
      fBlockedReplicaNo = -1;

      // fEntering should be false -- else blockedVolume is assumed good.
      // fEnteredDaughter is used for ExitNormal
      //
      fEntering = false;
      fEnteredDaughter = true;

      if( fExitedMother )
      {
        G4VPhysicalVolume* enteredPhysical = fHistory.GetTopVolume();
        const G4RotationMatrix* mRot = enteredPhysical->GetRotation();
        if( mRot )
        { 
          // Go deeper, i.e. move 'down' in the hierarchy
          // Apply direct rotation, not inverse
          //
          fGrandMotherExitNormal *= (*mRot);
          fChangedGrandMotherRefFrame= true;
        }
      }

#ifdef G4DEBUG_NAVIGATION
      if( fVerbose > 2 )
      { 
         G4VPhysicalVolume* enteredPhysical = fHistory.GetTopVolume();
         G4cout << "*** G4Navigator::LocateGlobalPointAndSetup() ***" << G4endl;
         G4cout << "    Entering volume: " << enteredPhysical->GetName()
                << G4endl;
      }
#endif
    }
  } while (noResult);  // Loop checking, 07.10.2016, J.Apostolakis

  fLastLocatedPointLocal = localPoint;

#ifdef G4VERBOSE
  if( fVerbose >= 4 )
  {
    G4int oldcoutPrec = G4cout.precision(8);
    G4String curPhysVol_Name("None");
    if (targetPhysical)  { curPhysVol_Name = targetPhysical->GetName(); }
    G4cout << "    Return value = new volume = " << curPhysVol_Name << G4endl;
    G4cout << "    ----- Upon exiting:" << G4endl;
    PrintState();
    if( fVerbose >= 5 )
    {
      G4cout << "Upon exiting LocateGlobalPointAndSetup():" << G4endl;
      G4cout << "    History = " << G4endl << fHistory << G4endl << G4endl;
    }
    G4cout.precision(oldcoutPrec);
  }
#endif

  fLocatedOutsideWorld= false;

  return targetPhysical;
}

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LocateGlobalPointAndUpdateTouchable() [1/2]

void G4Navigator::LocateGlobalPointAndUpdateTouchable ( const G4ThreeVector &  position, const G4ThreeVector &  direction, G4VTouchable *  touchableToUpdate, const G4bool  RelativeSearch = true  )

inline

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LocateGlobalPointAndUpdateTouchable() [2/2]

void G4Navigator::LocateGlobalPointAndUpdateTouchable ( const G4ThreeVector &  position, G4VTouchable *  touchableToUpdate, const G4bool  RelativeSearch = true  )

inline

LocateGlobalPointAndUpdateTouchableHandle()

void G4Navigator::LocateGlobalPointAndUpdateTouchableHandle ( const G4ThreeVector &  position, const G4ThreeVector &  direction, G4TouchableHandle &  oldTouchableToUpdate, const G4bool  RelativeSearch = true  )

inline

LocateGlobalPointWithinVolume()

void G4Navigator::LocateGlobalPointWithinVolume ( const G4ThreeVector &  position )

virtual

Reimplemented in G4MultiNavigator.

Definition at line 582 of file G4Navigator.cc.

{
#ifdef G4DEBUG_NAVIGATION
   // Check: Either step was not limited by a boundary
   //         or else the full step is no longer being taken
   assert( !fWasLimitedByGeometry );
#endif
  
   fLastLocatedPointLocal = ComputeLocalPoint(pGlobalpoint);
   fLastTriedStepComputation= false;
   fChangedGrandMotherRefFrame= false;  //  Frame for Exit Normal

#ifdef G4DEBUG_NAVIGATION
   if( fVerbose > 2 )
   { 
     G4cout << "Entering LocateGlobalWithinVolume(): History = " << G4endl;
     G4cout << fHistory << G4endl;
   }
#endif

   // For the case of Voxel (or Parameterised) volume the respective 
   // Navigator must be messaged to update its voxel information etc

   // Update the state of the Sub Navigators 
   // - in particular any voxel information they store/cache
   //
   G4VPhysicalVolume*  motherPhysical = fHistory.GetTopVolume();
   G4LogicalVolume*    motherLogical  = motherPhysical->GetLogicalVolume();
   G4SmartVoxelHeader* pVoxelHeader   = motherLogical->GetVoxelHeader();

   if ( fHistory.GetTopVolumeType()!=kReplica )
   {
     switch( CharacteriseDaughters(motherLogical) )
     {
       case kNormal:
         if ( pVoxelHeader )
         {
           fvoxelNav.VoxelLocate( pVoxelHeader, fLastLocatedPointLocal );
         }
         break;
       case kParameterised:
         if( GetDaughtersRegularStructureId(motherLogical) != 1 )
         {
           // Resets state & returns voxel node
           //
           fparamNav.ParamVoxelLocate( pVoxelHeader, fLastLocatedPointLocal );
         }
         break;
       case kReplica:
         G4Exception("G4Navigator::LocateGlobalPointWithinVolume()",
                     "GeomNav0001", FatalException,
                     "Not applicable for replicated volumes.");
         break;
     }
   }

   // Reset the state variables 
   //   - which would have been affected
   //     by the 'equivalent' call to LocateGlobalPointAndSetup
   //   - who's values have been invalidated by the 'move'.
   //
   fBlockedPhysicalVolume = 0; 
   fBlockedReplicaNo = -1;
   fEntering = false;
   fEnteredDaughter = false;  // Boundary not encountered, did not enter
   fExiting = false;
   fExitedMother = false;     // Boundary not encountered, did not exit
}

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NetRotation()

G4RotationMatrix G4Navigator::NetRotation ( ) const

inline

NetTranslation()

G4ThreeVector G4Navigator::NetTranslation ( ) const

inline

operator=()

G4Navigator& G4Navigator::operator= ( const G4Navigator &  )

private

PrintState()

void G4Navigator::PrintState

(

)

const

Definition at line 2084 of file G4Navigator.cc.

{
  G4int oldcoutPrec = G4cout.precision(4);
  if( fVerbose >= 4 )
  {
    G4cout << "The current state of G4Navigator is: " << G4endl;
    G4cout << "  ValidExitNormal= " << fValidExitNormal // << G4endl
           << "  ExitNormal     = " << fExitNormal      // << G4endl
           << "  Exiting        = " << fExiting         // << G4endl
           << "  Entering       = " << fEntering        // << G4endl
           << "  BlockedPhysicalVolume= " ;
    if (fBlockedPhysicalVolume==0)
    {
      G4cout << "None";
    }
    else
    {
      G4cout << fBlockedPhysicalVolume->GetName();
    }
    G4cout << G4endl
           << "  BlockedReplicaNo     = " <<  fBlockedReplicaNo   //  << G4endl
           << "  LastStepWasZero      = " <<   fLastStepWasZero   //  << G4endl
           << G4endl;   
  }
  if( ( 1 < fVerbose) && (fVerbose < 4) )
  {
    G4cout << G4endl; // Make sure to line up
    G4cout << std::setw(30) << " ExitNormal "  << " "
           << std::setw( 5) << " Valid "       << " "     
           << std::setw( 9) << " Exiting "     << " "      
           << std::setw( 9) << " Entering"     << " " 
           << std::setw(15) << " Blocked:Volume "  << " "   
           << std::setw( 9) << " ReplicaNo"        << " "  
           << std::setw( 8) << " LastStepZero  "   << " "   
           << G4endl;   
    G4cout << "( " << std::setw(7) << fExitNormal.x() 
           << ", " << std::setw(7) << fExitNormal.y()
           << ", " << std::setw(7) << fExitNormal.z() << " ) "
           << std::setw( 5)  << fValidExitNormal  << " "   
           << std::setw( 9)  << fExiting          << " "
           << std::setw( 9)  << fEntering         << " ";
    if ( fBlockedPhysicalVolume==0 )
    { G4cout << std::setw(15) << "None"; }
    else
    { G4cout << std::setw(15)<< fBlockedPhysicalVolume->GetName(); }
    G4cout << std::setw( 9)  << fBlockedReplicaNo  << " "
           << std::setw( 8)  << fLastStepWasZero   << " "
           << G4endl;   
  }
  if( fVerbose > 2 ) 
  {
    G4cout.precision(8);
    G4cout << " Current Localpoint = " << fLastLocatedPointLocal << G4endl;
    G4cout << " PreviousSftOrigin  = " << fPreviousSftOrigin << G4endl;
    G4cout << " PreviousSafety     = " << fPreviousSafety << G4endl; 
  }
  G4cout.precision(oldcoutPrec);
}

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RecheckDistanceToCurrentBoundary()

G4bool G4Navigator::RecheckDistanceToCurrentBoundary ( const G4ThreeVector &  pGlobalPoint, const G4ThreeVector &  pDirection, const G4double  CurrentProposedStepLength, G4double *  prDistance, G4double *  prNewSafety = 0  ) const

virtual

Definition at line 1909 of file G4Navigator.cc.

{
  G4ThreeVector localPosition  = ComputeLocalPoint(aDisplacedGlobalPoint);
  G4ThreeVector localDirection = ComputeLocalAxis(aNewDirection);
  // G4double Step = kInfinity;

  G4bool validExitNormal;
  G4ThreeVector exitNormal;
  // Check against mother solid
  G4VPhysicalVolume  *motherPhysical = fHistory.GetTopVolume();
  G4LogicalVolume *motherLogical = motherPhysical->GetLogicalVolume();
  
#ifdef CHECK_ORDER_OF_METHODS
  if( ! fLastTriedStepComputation )
  {
     G4Exception("G4Navigator::RecheckDistanceToCurrentBoundary()",
                 "GeomNav0001", FatalException, 
     "Method must be called after ComputeStep(), before call to LocateMethod.");
  }
#endif

  EInside locatedDaug; // = kUndefined;
  G4double daughterStep= DBL_MAX;
  G4double daughterSafety= DBL_MAX;

  if( fEnteredDaughter )
  {
     if( motherLogical->CharacteriseDaughters() == kReplica )  { return false; }

     // Track arrived at boundary of a daughter volume at 
     //   the last call of ComputeStep().
     // In case the proposed displaced point is inside this daughter,
     //   it must backtrack at least to the entry point.
     // NOTE: No check is made against other daughter volumes.  It is 
     //   assumed that the proposed displacement is small enough that 
     //   this is not needed.

     // Must check boundary of current daughter
     //
     G4VPhysicalVolume *candPhysical= fBlockedPhysicalVolume; 
     G4LogicalVolume *candLogical= candPhysical->GetLogicalVolume();
     G4VSolid        *candSolid=   candLogical->GetSolid();

     G4AffineTransform nextLevelTrf(candPhysical->GetRotation(),
                                    candPhysical->GetTranslation());

     G4ThreeVector dgPosition=  nextLevelTrf.TransformPoint(localPosition); 
     G4ThreeVector dgDirection= nextLevelTrf.TransformAxis(localDirection);
     locatedDaug = candSolid->Inside(dgPosition);

     if( locatedDaug == kInside )
     {
        // Reverse direction - and find first exit. ( Is it valid?)
        // Must backtrack
        G4double distanceBackOut = 
          candSolid->DistanceToOut(dgPosition,
                                   - dgDirection,  // Reverse direction
                                   true, &validExitNormal, &exitNormal);
        daughterStep= - distanceBackOut;
          // No check is made whether the particle could have arrived at 
          // at this location without encountering another volume or 
          // a different psurface of the current volume
        if( prNewSafety )
        {
           daughterSafety= candSolid->DistanceToOut(dgPosition);
        }
     }
     else
     {
        if( locatedDaug == kOutside )
        {
            // See whether it still intersects it
            //
            daughterStep=  candSolid->DistanceToIn(dgPosition,
                                                   dgDirection);
           if( prNewSafety )
           {
              daughterSafety= candSolid->DistanceToIn(dgPosition);
           }
        }
        else
        {
           // The point remains on the surface of candidate solid
           //
           daughterStep= 0.0;
           daughterSafety= 0.0; 
        }
     }

     //  If trial point is in daughter (or on its surface) we have the
     //  answer, the rest is not relevant
     //
     if( locatedDaug != kOutside )
     {
        *prDistance= daughterStep;
        if( prNewSafety )  { *prNewSafety= daughterSafety; }
        return true;
     }
     // If ever extended, so that some type of mother cut daughter, 
     // this would change
  }

  G4VSolid *motherSolid= motherLogical->GetSolid();

  G4double motherStep= DBL_MAX, motherSafety= DBL_MAX;
  
  // Check distance to boundary of mother
  //
  if ( fHistory.GetTopVolumeType()!=kReplica )
  {
     EInside locatedMoth = motherSolid->Inside(localPosition);

     if( locatedMoth == kInside )
     {
        motherSafety= motherSolid->DistanceToOut(localPosition);
        if( ProposedMove >= motherSafety )
        {
           motherStep= motherSolid->DistanceToOut(localPosition,
                                                  localDirection,
                             true, &validExitNormal, &exitNormal);
        }
        else
        {
           motherStep= ProposedMove;
        }
     }
     else if( locatedMoth == kOutside)
     {
        motherSafety= motherSolid->DistanceToIn(localPosition);
        if( ProposedMove >= motherSafety )
        {
            motherStep= - motherSolid->DistanceToIn(localPosition,
                                                   -localDirection);
        }
     }
     else
     {
        motherSafety= 0.0; 
        *prDistance= 0.0;  //  On surface - no move // motherStep;
        if( prNewSafety )  { *prNewSafety= motherSafety; }
        return false;
     }
  }
  else
  {
     return false;
  }
 
  *prDistance=  std::min( motherStep, daughterStep ); 
  if( prNewSafety )
  {
     *prNewSafety= std::min( motherSafety, daughterSafety );
  }
  return true;
}

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ResetHierarchyAndLocate()

G4VPhysicalVolume * G4Navigator::ResetHierarchyAndLocate ( const G4ThreeVector &  point, const G4ThreeVector &  direction, const G4TouchableHistory &  h  )

virtual

Reimplemented in G4MultiNavigator.

Definition at line 95 of file G4Navigator.cc.

{
  ResetState();
  fHistory = *h.GetHistory();
  SetupHierarchy();
  fLastTriedStepComputation= false;  // Redundant, but best
  return LocateGlobalPointAndSetup(p, &direction, true, false);
}

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ResetStackAndState()

void G4Navigator::ResetStackAndState ( )

inline

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ResetState()

void G4Navigator::ResetState ( )

protectedvirtual

Reimplemented in G4MultiNavigator.

Definition at line 1230 of file G4Navigator.cc.

{
  fWasLimitedByGeometry  = false;
  fEntering              = false;
  fExiting               = false;
  fLocatedOnEdge         = false;
  fLastStepWasZero       = false;
  fEnteredDaughter       = false;
  fExitedMother          = false;
  fPushed                = false;

  fValidExitNormal       = false;
  fChangedGrandMotherRefFrame= false;
  fCalculatedExitNormal  = false;

  fExitNormal            = G4ThreeVector(0,0,0);
  fGrandMotherExitNormal = G4ThreeVector(0,0,0);
  fExitNormalGlobalFrame = G4ThreeVector(0,0,0);

  fPreviousSftOrigin     = G4ThreeVector(0,0,0);
  fPreviousSafety        = 0.0; 

  fNumberZeroSteps       = 0;
    
  fBlockedPhysicalVolume = 0;
  fBlockedReplicaNo      = -1;

  fLastLocatedPointLocal = G4ThreeVector( kInfinity, -kInfinity, 0.0 ); 
  fLocatedOutsideWorld   = false;
}

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RestoreSavedState()

void G4Navigator::RestoreSavedState ( )

protected

Definition at line 693 of file G4Navigator.cc.

{
  fExitNormal = fSaveState.sExitNormal;
  fValidExitNormal = fSaveState.sValidExitNormal;
  fExiting = fSaveState.sExiting;
  fEntering = fSaveState.sEntering;

  fBlockedPhysicalVolume = fSaveState.spBlockedPhysicalVolume;
  fBlockedReplicaNo = fSaveState.sBlockedReplicaNo, 

  fLastStepWasZero = fSaveState.sLastStepWasZero;
  
  fLocatedOutsideWorld = fSaveState.sLocatedOutsideWorld;
  fLastLocatedPointLocal= fSaveState.sLastLocatedPointLocal;
  fEnteredDaughter= fSaveState.sEnteredDaughter;
  fExitedMother= fSaveState.sExitedMother;
  fWasLimitedByGeometry= fSaveState.sWasLimitedByGeometry;
  
  // The 'expected' behaviour is to restore these too (fix 2014.05.26)
  fPreviousSftOrigin=   fSaveState.sPreviousSftOrigin;
  fPreviousSafety= fSaveState.sPreviousSafety;
}

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SetGeometricallyLimitedStep()

void G4Navigator::SetGeometricallyLimitedStep ( )

inline

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SetPushVerbosity()

void G4Navigator::SetPushVerbosity ( G4bool  mode )

inline

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SetSavedState()

void G4Navigator::SetSavedState ( )

protected

Definition at line 659 of file G4Navigator.cc.

{
  // Note: the state of dependent objects is not currently saved.
  //   ( This means that the full state is changed by calls between
  //     SetSavedState() and RestoreSavedState(); 
  
  fSaveState.sExitNormal = fExitNormal;
  fSaveState.sValidExitNormal = fValidExitNormal;
  fSaveState.sExiting = fExiting;
  fSaveState.sEntering = fEntering;

  fSaveState.spBlockedPhysicalVolume = fBlockedPhysicalVolume;
  fSaveState.sBlockedReplicaNo = fBlockedReplicaNo, 

  fSaveState.sLastStepWasZero = fLastStepWasZero;
  
  fSaveState.sLocatedOutsideWorld = fLocatedOutsideWorld;
  fSaveState.sLastLocatedPointLocal= fLastLocatedPointLocal;
  fSaveState.sEnteredDaughter= fEnteredDaughter;
  fSaveState.sExitedMother= fExitedMother;
  fSaveState.sWasLimitedByGeometry= fWasLimitedByGeometry;

  // Even the safety sphere - if you want to change it do it explicitly!
  //
  fSaveState.sPreviousSftOrigin= fPreviousSftOrigin;
  fSaveState.sPreviousSafety= fPreviousSafety;
}

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SetupHierarchy()

void G4Navigator::SetupHierarchy ( )

protectedvirtual

Reimplemented in G4MultiNavigator.

Definition at line 1269 of file G4Navigator.cc.

{
  G4int i;
  const G4int cdepth = fHistory.GetDepth();
  G4VPhysicalVolume *current;
  G4VSolid *pSolid;
  G4VPVParameterisation *pParam;

  for ( i=1; i<=cdepth; i++ )
  {
    current = fHistory.GetVolume(i);
    switch ( fHistory.GetVolumeType(i) )
    {
      case kNormal:
        break;
      case kReplica:
        freplicaNav.ComputeTransformation(fHistory.GetReplicaNo(i), current);
        break;
      case kParameterised:
        G4int replicaNo;
        pParam = current->GetParameterisation();
        replicaNo = fHistory.GetReplicaNo(i);
        pSolid = pParam->ComputeSolid(replicaNo, current);

        // Set up dimensions & transform in solid/physical volume
        //
        pSolid->ComputeDimensions(pParam, replicaNo, current);
        pParam->ComputeTransformation(replicaNo, current);

        G4TouchableHistory *pTouchable= 0;
        if( pParam->IsNested() )
        {
           pTouchable= new G4TouchableHistory( fHistory );
           pTouchable->MoveUpHistory(); // Move up to the parent level 
             // Adequate only if Nested at the Branch level (last)
           // To extend to other cases:  
           // pTouchable->MoveUpHistory(cdepth-i-1);
             // Move to the parent level of *Current* level
             // Could replace this line and constructor with a revised
             // c-tor for History(levels to drop)
        }
        // Set up the correct solid and material in Logical Volume
        //
        G4LogicalVolume *pLogical = current->GetLogicalVolume();
        pLogical->SetSolid( pSolid );
        pLogical->UpdateMaterial( pParam ->
          ComputeMaterial(replicaNo, current, pTouchable) );
        delete pTouchable;
        break;
    }
  }
}

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SetVerboseLevel()

void G4Navigator::SetVerboseLevel ( G4int  level )

inline

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SetWorldVolume()

void G4Navigator::SetWorldVolume ( G4VPhysicalVolume *  pWorld )

inline

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SeverityOfZeroStepping()

G4int G4Navigator::SeverityOfZeroStepping ( G4int *  noZeroSteps ) const

inline

VolumeType()

EVolume G4Navigator::VolumeType ( const G4VPhysicalVolume *  pVol ) const

inlineprotected

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Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  os, const G4Navigator &  n  )

friend

Definition at line 2250 of file G4Navigator.cc.

{
  //  Old version did only the following:
  // os << "Current History: " << G4endl << n.fHistory;
  //  Old behaviour is recovered for fVerbose = 0
  
  // Adapted from G4Navigator::PrintState() const

  G4int oldcoutPrec = os.precision(4);
  if( n.fVerbose >= 4 )
  {
    os << "The current state of G4Navigator is: " << G4endl;
    os << "  ValidExitNormal= " << n.fValidExitNormal << G4endl
    << "  ExitNormal     = " << n.fExitNormal      << G4endl
    << "  Exiting        = " << n.fExiting         << G4endl
    << "  Entering       = " << n.fEntering        << G4endl
    << "  BlockedPhysicalVolume= " ;
    if (n.fBlockedPhysicalVolume==0)
      os << "None";
    else
      os << n.fBlockedPhysicalVolume->GetName();
    os << G4endl
    << "  BlockedReplicaNo     = " <<  n.fBlockedReplicaNo       << G4endl
    << "  LastStepWasZero      = " <<   n.fLastStepWasZero       << G4endl
    << G4endl;
  }
  if( ( 1 < n.fVerbose) && (n.fVerbose < 4) )
  {
    os << G4endl; // Make sure to line up
    os << std::setw(30) << " ExitNormal "  << " "
    << std::setw( 5) << " Valid "       << " "
    << std::setw( 9) << " Exiting "     << " "
    << std::setw( 9) << " Entering"     << " "
    << std::setw(15) << " Blocked:Volume "  << " "
    << std::setw( 9) << " ReplicaNo"        << " "
    << std::setw( 8) << " LastStepZero  "   << " "
    << G4endl;
    os << "( " << std::setw(7) << n.fExitNormal.x()
    << ", " << std::setw(7) << n.fExitNormal.y()
    << ", " << std::setw(7) << n.fExitNormal.z() << " ) "
    << std::setw( 5)  << n.fValidExitNormal  << " "
    << std::setw( 9)  << n.fExiting          << " "
    << std::setw( 9)  << n.fEntering         << " ";
    if ( n.fBlockedPhysicalVolume==0 )
      { os << std::setw(15) << "None"; }
    else
      { os << std::setw(15)<< n.fBlockedPhysicalVolume->GetName(); }
    os << std::setw( 9)  << n.fBlockedReplicaNo  << " "
    << std::setw( 8)  << n.fLastStepWasZero   << " "
    << G4endl;
  }
  if( n.fVerbose > 2 )
  {
    os.precision(8);
    os << " Current Localpoint = " << n.fLastLocatedPointLocal << G4endl;
    os << " PreviousSftOrigin  = " << n.fPreviousSftOrigin << G4endl;
    os << " PreviousSafety     = " << n.fPreviousSafety << G4endl;
  }
  if( n.fVerbose > 3 || n.fVerbose == 0 )
  {
    os << "Current History: " << G4endl << n.fHistory;
  }
    
  os.precision(oldcoutPrec);
  return os;
}

Member Data Documentation

fAbandonThreshold_NoZeroSteps

G4int G4Navigator::fAbandonThreshold_NoZeroSteps

private

Definition at line 451 of file G4Navigator.hh.

fActionThreshold_NoZeroSteps

G4int G4Navigator::fActionThreshold_NoZeroSteps

private

Definition at line 449 of file G4Navigator.hh.

fActive

G4bool G4Navigator::fActive

private

Definition at line 397 of file G4Navigator.hh.

fBlockedPhysicalVolume

G4VPhysicalVolume* G4Navigator::fBlockedPhysicalVolume

private

Definition at line 415 of file G4Navigator.hh.

fBlockedReplicaNo

G4int G4Navigator::fBlockedReplicaNo

private

Definition at line 416 of file G4Navigator.hh.

fCalculatedExitNormal

G4bool G4Navigator::fCalculatedExitNormal

private

Definition at line 433 of file G4Navigator.hh.

fChangedGrandMotherRefFrame

G4bool G4Navigator::fChangedGrandMotherRefFrame

private

Definition at line 429 of file G4Navigator.hh.

fCheck

G4bool G4Navigator::fCheck

private

Definition at line 493 of file G4Navigator.hh.

fEnteredDaughter

G4bool G4Navigator::fEnteredDaughter

protected

Definition at line 372 of file G4Navigator.hh.

fEntering

G4bool G4Navigator::fEntering

private

Definition at line 406 of file G4Navigator.hh.

fExitedMother

G4bool G4Navigator::fExitedMother

protected

Definition at line 378 of file G4Navigator.hh.

fExiting

G4bool G4Navigator::fExiting

private

Definition at line 406 of file G4Navigator.hh.

fExitNormal

G4ThreeVector G4Navigator::fExitNormal

private

Definition at line 424 of file G4Navigator.hh.

fExitNormalGlobalFrame

G4ThreeVector G4Navigator::fExitNormalGlobalFrame

private

Definition at line 431 of file G4Navigator.hh.

fGrandMotherExitNormal

G4ThreeVector G4Navigator::fGrandMotherExitNormal

private

Definition at line 427 of file G4Navigator.hh.

fHistory

G4NavigationHistory G4Navigator::fHistory

protected

Definition at line 368 of file G4Navigator.hh.

fLastLocatedPointLocal

G4ThreeVector G4Navigator::fLastLocatedPointLocal

private

Definition at line 418 of file G4Navigator.hh.

fLastStepEndPointLocal

G4ThreeVector G4Navigator::fLastStepEndPointLocal

protected

Definition at line 388 of file G4Navigator.hh.

fLastStepWasZero

G4bool G4Navigator::fLastStepWasZero

private

Definition at line 442 of file G4Navigator.hh.

fLastTriedStepComputation

G4bool G4Navigator::fLastTriedStepComputation

private

Definition at line 400 of file G4Navigator.hh.

fLocatedOnEdge

G4bool G4Navigator::fLocatedOnEdge

private

Definition at line 445 of file G4Navigator.hh.

fLocatedOutsideWorld

G4bool G4Navigator::fLocatedOutsideWorld

private

Definition at line 420 of file G4Navigator.hh.

fMinStep

G4double G4Navigator::fMinStep

protected

Definition at line 361 of file G4Navigator.hh.

fnormalNav

G4NormalNavigation G4Navigator::fnormalNav

private

Definition at line 500 of file G4Navigator.hh.

fNumberZeroSteps

G4int G4Navigator::fNumberZeroSteps

private

Definition at line 447 of file G4Navigator.hh.

fparamNav

G4ParameterisedNavigation G4Navigator::fparamNav

private

Definition at line 502 of file G4Navigator.hh.

fPreviousSafety

G4double G4Navigator::fPreviousSafety

private

Definition at line 455 of file G4Navigator.hh.

fPreviousSftOrigin

G4ThreeVector G4Navigator::fPreviousSftOrigin

private

Definition at line 454 of file G4Navigator.hh.

fPushed

G4bool G4Navigator::fPushed

private

Definition at line 495 of file G4Navigator.hh.

fpVoxelSafety

G4VoxelSafety* G4Navigator::fpVoxelSafety

private

Definition at line 505 of file G4Navigator.hh.

fregularNav

G4RegularNavigation G4Navigator::fregularNav

private

Definition at line 504 of file G4Navigator.hh.

freplicaNav

G4ReplicaNavigation G4Navigator::freplicaNav

private

Definition at line 503 of file G4Navigator.hh.

fSaveState

struct G4Navigator::G4SaveNavigatorState G4Navigator::fSaveState

private

fSqTol

G4double G4Navigator::fSqTol

protected

Definition at line 361 of file G4Navigator.hh.

fStepEndPoint

G4ThreeVector G4Navigator::fStepEndPoint

protected

Definition at line 385 of file G4Navigator.hh.

fTopPhysical

G4VPhysicalVolume* G4Navigator::fTopPhysical

private

Definition at line 487 of file G4Navigator.hh.

fValidExitNormal

G4bool G4Navigator::fValidExitNormal

private

Definition at line 423 of file G4Navigator.hh.

fVerbose

G4int G4Navigator::fVerbose

protected

Definition at line 392 of file G4Navigator.hh.

fvoxelNav

G4VoxelNavigation G4Navigator::fvoxelNav

private

Definition at line 501 of file G4Navigator.hh.

fWarnPush

G4bool G4Navigator::fWarnPush

private

Definition at line 495 of file G4Navigator.hh.

fWasLimitedByGeometry

G4bool G4Navigator::fWasLimitedByGeometry

protected

Definition at line 382 of file G4Navigator.hh.

kCarTolerance

G4double G4Navigator::kCarTolerance

protected

Definition at line 361 of file G4Navigator.hh.

---

The documentation for this class was generated from the following files:

• G4Navigator.hh
• G4Navigator.cc