SimpleNavigationSchool Class Reference

#include <SimpleNavigationSchool.h>

Inheritance diagram for SimpleNavigationSchool:

Public Member Functions
virtual StateType	navigableLayers () override
	SimpleNavigationSchool ()
	SimpleNavigationSchool (const GeometricSearchTracker *theTracker, const MagneticField *field)
	~SimpleNavigationSchool ()
Public Member Functions inherited from NavigationSchool
const std::vector< const DetLayer * > &	allLayersInSystem () const
template<typename... Args>
std::vector< const DetLayer * >	compatibleLayers (const DetLayer &detLayer, Args &&...args) const
	Returns all layers compatible. More...
	NavigationSchool ()
template<typename... Args>
std::vector< const DetLayer * >	nextLayers (const DetLayer &detLayer, Args &&...args) const
	NavigationDirection. More...
virtual	~NavigationSchool ()

Protected Types
typedef std::vector< const BarrelDetLayer * >	BDLC
typedef BDLC::iterator	BDLI
typedef std::vector < SimpleBarrelNavigableLayer * >	BNLCType
typedef BDLC::const_iterator	ConstBDLI
typedef FDLC::const_iterator	ConstFDLI
typedef std::vector< const DetLayer * >	DLC
typedef DLC::iterator	DLI
typedef std::vector< const ForwardDetLayer * >	FDLC
typedef FDLC::iterator	FDLI
typedef std::vector < SimpleForwardNavigableLayer * >	FNLCType

Protected Member Functions
virtual float	barrelLength ()
void	cleanMemory ()
virtual void	establishInverseRelations ()
virtual void	linkBarrelLayers (SymmetricLayerFinder &symFinder)
virtual void	linkForwardLayers (SymmetricLayerFinder &symFinder)
virtual void	linkNextBarrelLayer (ForwardDetLayer const *fl, BDLC &)
virtual void	linkNextForwardLayer (BarrelDetLayer const *, FDLC &)
virtual void	linkNextLargerLayer (BDLI, BDLI, BDLC &)
virtual void	linkNextLayerInGroup (FDLI fli, const FDLC &group, FDLC &reachableFL)
virtual void	linkOuterGroup (ForwardDetLayer const *fl, const FDLC &group, FDLC &reachableFL)
virtual void	linkWithinGroup (FDLI fl, const FDLC &group, FDLC &reachableFL)
virtual ConstFDLI	outerRadiusIncrease (FDLI fl, const FDLC &group)
virtual std::vector< FDLC >	splitForwardLayers ()
Protected Member Functions inherited from NavigationSchool
void	setState (const StateType &state)

Protected Attributes
BDLC	theBarrelLayers
float	theBarrelLength
BNLCType	theBarrelNLC
const MagneticField *	theField
FDLC	theForwardLayers
FNLCType	theForwardNLC
FDLC	theLeftLayers
FDLC	theRightLayers
const GeometricSearchTracker *	theTracker
Protected Attributes inherited from NavigationSchool
const std::vector< const DetLayer * > *	theAllDetLayersInSystem
StateType	theAllNavigableLayer

Additional Inherited Members
Public Types inherited from NavigationSchool
typedef std::vector < NavigableLayer * >	StateType

Detailed Description

Concrete navigation school for the Tracker

Definition at line 20 of file SimpleNavigationSchool.h.

Member Typedef Documentation

typedef std::vector<const BarrelDetLayer*> SimpleNavigationSchool::BDLC

protected

Definition at line 34 of file SimpleNavigationSchool.h.

typedef BDLC::iterator SimpleNavigationSchool::BDLI

protected

Definition at line 37 of file SimpleNavigationSchool.h.

typedef std::vector< SimpleBarrelNavigableLayer*> SimpleNavigationSchool::BNLCType

protected

Definition at line 48 of file SimpleNavigationSchool.h.

typedef BDLC::const_iterator SimpleNavigationSchool::ConstBDLI

protected

Definition at line 39 of file SimpleNavigationSchool.h.

typedef FDLC::const_iterator SimpleNavigationSchool::ConstFDLI

protected

Definition at line 40 of file SimpleNavigationSchool.h.

typedef std::vector<const DetLayer*> SimpleNavigationSchool::DLC

protected

Definition at line 33 of file SimpleNavigationSchool.h.

typedef DLC::iterator SimpleNavigationSchool::DLI

protected

Definition at line 36 of file SimpleNavigationSchool.h.

typedef std::vector<const ForwardDetLayer*> SimpleNavigationSchool::FDLC

protected

Definition at line 35 of file SimpleNavigationSchool.h.

typedef FDLC::iterator SimpleNavigationSchool::FDLI

protected

Definition at line 38 of file SimpleNavigationSchool.h.

typedef std::vector< SimpleForwardNavigableLayer*> SimpleNavigationSchool::FNLCType

protected

Definition at line 49 of file SimpleNavigationSchool.h.

Constructor & Destructor Documentation

SimpleNavigationSchool::SimpleNavigationSchool ( )

inline

Definition at line 23 of file SimpleNavigationSchool.h.

: theField(0),theTracker(0){};

SimpleNavigationSchool::SimpleNavigationSchool	(	const GeometricSearchTracker *	theTracker,
		const MagneticField *	field
	)

Definition at line 29 of file SimpleNavigationSchool.cc.

References GeometricSearchTracker::allLayers(), GeometricSearchTracker::barrelLayers(), establishInverseRelations(), GeometricSearchTracker::forwardLayers(), i, linkBarrelLayers(), linkForwardLayers(), NavigationSchool::theAllDetLayersInSystem, NavigationSchool::theAllNavigableLayer, theBarrelLayers, theForwardLayers, theLeftLayers, theRightLayers, and theTracker.

                                                       : 
  theBarrelLength(0),theField(field), theTracker(theInputTracker)
{

  theAllDetLayersInSystem=&theInputTracker->allLayers();
  theAllNavigableLayer.resize(theInputTracker->allLayers().size(),nullptr);


  // Get barrel layers
  for( auto i : theTracker->barrelLayers()) {
    theBarrelLayers.push_back( i );
  }

  // get forward layers
  for( auto i : theTracker->forwardLayers()) {
    theForwardLayers.push_back( i );
  }
  
  FDLI middle = find_if( theForwardLayers.begin(), theForwardLayers.end(),
             not1(DetBelowZ(0)));
  theLeftLayers  = FDLC( theForwardLayers.begin(), middle);
  theRightLayers = FDLC( middle, theForwardLayers.end());
  
  SymmetricLayerFinder symFinder( theForwardLayers);

  // only work on positive Z side; negative by mirror symmetry later
  linkBarrelLayers( symFinder);
  linkForwardLayers( symFinder);
  establishInverseRelations();
}

SimpleNavigationSchool::~SimpleNavigationSchool ( )

inline

Definition at line 26 of file SimpleNavigationSchool.h.

{cleanMemory();}

Member Function Documentation

float SimpleNavigationSchool::barrelLength ( )

protectedvirtual

Definition at line 365 of file SimpleNavigationSchool.cc.

References i, LogDebug, bookConverter::max, theBarrelLayers, and theBarrelLength.

Referenced by linkNextBarrelLayer().

{
  if ( theBarrelLength < 1.) {
    for (BDLI i=theBarrelLayers.begin(); i!=theBarrelLayers.end(); i++) {
      theBarrelLength = max( theBarrelLength,
                 (**i).surface().bounds().length() / 2.f);
    }

    LogDebug("TkNavigation") << "The barrel length is " << theBarrelLength ;
  }
  return theBarrelLength;
}

void SimpleNavigationSchool::cleanMemory ( )

protected

Definition at line 61 of file SimpleNavigationSchool.cc.

References cuy::ib, theBarrelNLC, and theForwardNLC.

Referenced by BeamHaloNavigationSchool::~BeamHaloNavigationSchool(), and CosmicNavigationSchool::~CosmicNavigationSchool().

                                        {
  // free the memory allocated to the SimpleNavigableLayers
  for ( vector< SimpleBarrelNavigableLayer*>::const_iterator
          ib = theBarrelNLC.begin(); ib != theBarrelNLC.end(); ib++) {
    delete (*ib);
  }
  theBarrelNLC.clear();
  for ( vector< SimpleForwardNavigableLayer*>::const_iterator 
      ifl = theForwardNLC.begin(); ifl != theForwardNLC.end(); ifl++) {
    delete (*ifl);
  }
  theForwardNLC.clear();
}

void SimpleNavigationSchool::establishInverseRelations ( )

protectedvirtual

Reimplemented in BeamHaloNavigationSchool.

Definition at line 378 of file SimpleNavigationSchool.cc.

References NavigableLayer::detLayer(), i, insideOut, navigableLayers(), NavigationSchool::nextLayers(), NavigationSchool::setState(), NavigationSchool::theAllNavigableLayer, theBarrelLayers, and theForwardLayers.

Referenced by SimpleNavigationSchool().

                                                       {

  // NavigationSetter setter(*this);

  setState(navigableLayers());

    // find for each layer which are the barrel and forward
    // layers that point to it
    typedef map<const DetLayer*, vector<const BarrelDetLayer*>, less<const DetLayer*> > BarrelMapType;
    typedef map<const DetLayer*, vector<const ForwardDetLayer*>, less<const DetLayer*> > ForwardMapType;


    BarrelMapType reachedBarrelLayersMap;
    ForwardMapType reachedForwardLayersMap;


    for ( auto bli :  theBarrelLayers) {
      auto reachedLC = nextLayers(*bli, insideOut);
      for ( auto i : reachedLC) {
        reachedBarrelLayersMap[i].push_back(bli);
      }
    }

    for ( auto fli : theForwardLayers) {
      auto reachedLC = nextLayers(*fli, insideOut);
      for ( auto i : reachedLC) {
        reachedForwardLayersMap[i].push_back(fli);
      }
    }

    /*
    vector<DetLayer*> lc = theTracker->allLayers();
    for ( vector<DetLayer*>::iterator i = lc.begin(); i != lc.end(); i++) {
      SimpleNavigableLayer* navigableLayer =
    dynamic_cast<SimpleNavigableLayer*>((**i).navigableLayer());
      navigableLayer->setInwardLinks( reachedBarrelLayersMap[*i],reachedForwardLayersMap[*i] );
    }
    */
    
    
    for(auto nl : theAllNavigableLayer) {
      if (!nl) continue;
      auto navigableLayer = static_cast<SimpleNavigableLayer*>(nl);
      auto dl = nl->detLayer();
      navigableLayer->setInwardLinks( reachedBarrelLayersMap[dl],reachedForwardLayersMap[dl] );
    }
    
    
}

void SimpleNavigationSchool::linkBarrelLayers ( SymmetricLayerFinder &  symFinder )

protectedvirtual

Reimplemented in CosmicNavigationSchool.

Definition at line 91 of file SimpleNavigationSchool.cc.

References i, linkNextForwardLayer(), linkNextLargerLayer(), SymmetricLayerFinder::mirror(), theBarrelLayers, theBarrelNLC, and theField.

Referenced by SimpleNavigationSchool().

{
  // Link barrel layers outwards
  for ( BDLI i = theBarrelLayers.begin(); i != theBarrelLayers.end(); i++) {
    BDLC reachableBL;
    FDLC leftFL;
    FDLC rightFL;

    // always add next barrel layer first
    if ( i+1 != theBarrelLayers.end()) reachableBL.push_back(*(i+1));
 
    // Add closest reachable forward layer (except for last BarrelLayer)
    if (i != theBarrelLayers.end() - 1) {
      linkNextForwardLayer( *i, rightFL);
    }

    // Add next BarrelLayer with length larger than the current BL
    if ( i+2 < theBarrelLayers.end()) {
      linkNextLargerLayer( i, theBarrelLayers.end(), reachableBL);
    }

    theBarrelNLC.push_back( new 
       SimpleBarrelNavigableLayer( *i, reachableBL,
                   symFinder.mirror(rightFL),
                   rightFL,theField, 5.));
  }
}

void SimpleNavigationSchool::linkForwardLayers ( SymmetricLayerFinder &  symFinder )

protectedvirtual

Definition at line 158 of file SimpleNavigationSchool.cc.

References g, watchdog::group, i, linkNextBarrelLayer(), linkNextLayerInGroup(), linkOuterGroup(), linkWithinGroup(), LogDebug, SymmetricLayerFinder::mirror(), splitForwardLayers(), theField, and theForwardNLC.

Referenced by SimpleNavigationSchool().

{

  // handle right side first, groups are only on the right 
  vector<FDLC> groups = splitForwardLayers();

  LogDebug("TkNavigation") << "SimpleNavigationSchool, Forward groups size = " << groups.size() ;
  for (vector<FDLC>::iterator g = groups.begin(); g != groups.end(); g++) {
    LogDebug("TkNavigation") << "group " << g - groups.begin() << " has " 
                 << g->size() << " layers " ;
  }

  for ( vector<FDLC>::iterator group = groups.begin();
    group != groups.end(); group++) {

    for ( FDLI i = group->begin(); i != group->end(); i++) {

      BDLC reachableBL;
      FDLC reachableFL;
 
      // Always connect to next barrel layer first, if exists
      linkNextBarrelLayer( *i, reachableBL);

      // Then always connect to next forward layer of "same" size, 
      // and layers of larger inner Radius
      linkNextLayerInGroup( i, *group, reachableFL);

      // Then connect to next N fw layers of next size
      if ( group+1 != groups.end()) {
    linkOuterGroup( *i, *(group+1), reachableFL);
      }

      // or connect within the group if outer radius increases
      linkWithinGroup( i, *group, reachableFL);

      theForwardNLC.push_back( new SimpleForwardNavigableLayer( *i,reachableBL,
                                reachableFL,
                                theField,
                                5.));
      theForwardNLC.push_back( new SimpleForwardNavigableLayer( symFinder.mirror(*i),
                                reachableBL,
                                symFinder.mirror(reachableFL),
                                theField,
                                5.));

    }
  }

//    // now the left side by symmetry
//    for ( FDLI ileft = theLeftLayers.begin(); 
//      ileft != theLeftLayers.end(); ileft++) {
//      ForwardDetLayer* right = symFinder.mirror( *ileft);
    
//      theForwardNLC.push_back( new 
//         SimpleForwardNavigableLayer( *ileft , right->nextBarrelLayers(),
//                            symFinder.mirror(right->nextForwardLayers())));
//    }
}

void SimpleNavigationSchool::linkNextBarrelLayer ( ForwardDetLayer const *  fl, BDLC &  reachableBL  )

protectedvirtual

Definition at line 217 of file SimpleNavigationSchool.cc.

References barrelLength(), GeometricSearchDet::position(), ForwardDetLayer::specificSurface(), theBarrelLayers, and PV3DBase< T, PVType, FrameType >::z().

Referenced by linkForwardLayers().

{
  if ( fl->position().z() > barrelLength()) return;

  float outerRadius = fl->specificSurface().outerRadius();
  float zpos        = fl->position().z();
  for ( BDLI bli = theBarrelLayers.begin(); bli != theBarrelLayers.end(); bli++) {
    if ( outerRadius < (**bli).specificSurface().radius() &&
     zpos        < (**bli).surface().bounds().length() / 2.) {
      reachableBL.push_back( *bli);
      return;
    }
  }
}

void SimpleNavigationSchool::linkNextForwardLayer ( BarrelDetLayer const *  bl, FDLC &  rightFL  )

protectedvirtual

Definition at line 119 of file SimpleNavigationSchool.cc.

References Surface::bounds(), Bounds::length(), CosmicsPD_Skims::radius, BarrelDetLayer::specificSurface(), BarrelDetLayer::surface(), and theRightLayers.

Referenced by linkBarrelLayers().

{
  // find first forward layer with larger Z and larger outer radius
  float length = bl->surface().bounds().length() / 2.;
  float radius = bl->specificSurface().radius();
  for ( FDLI fli = theRightLayers.begin();
    fli != theRightLayers.end(); fli++) {
    if ( length < (**fli).position().z() &&
     radius < (**fli).specificSurface().outerRadius()) {
      //search if there are any sovrapposition between forward layers
      for ( FDLI fliNext = fli; fliNext != theRightLayers.end(); fliNext++) {
        if ( (**fliNext).position().z() < (**fli).position().z() && (**fliNext).specificSurface().innerRadius() < (**fli).specificSurface().outerRadius()) {
          rightFL.push_back( *fliNext);
          return;
        }
      }
      rightFL.push_back( *fli);
      return;
    }
  }
}

void SimpleNavigationSchool::linkNextLargerLayer ( BDLI  bli, BDLI  end, BDLC &  reachableBL  )

protectedvirtual

Definition at line 142 of file SimpleNavigationSchool.cc.

References end, geometryDiff::epsilon, and i.

Referenced by linkBarrelLayers().

{
  // compare length of next layer with length of following ones
  float length = (**(bli+1)).surface().bounds().length();
  float epsilon = 0.1;

  for ( BDLI i = bli+2; i < end; i++) {
    if ( length + epsilon < (**i).surface().bounds().length()) {
      reachableBL.push_back( *i);
      return;
    }
  }
}

void SimpleNavigationSchool::linkNextLayerInGroup ( FDLI  fli, const FDLC &  group, FDLC &  reachableFL  )

protectedvirtual

Definition at line 234 of file SimpleNavigationSchool.cc.

References geometryDiff::epsilon, and i.

Referenced by linkForwardLayers().

{
  // Always connect to next forward layer of "same" size, if exists
  if ( fli+1 != group.end()) {
    reachableFL.push_back( *(fli+1));
    // If that layer has an inner radius larger then the current one
    // also connect ALL next disks of same radius.
    float innerRThis = (**fli).specificSurface().innerRadius();
    float innerRNext =  (**(fli+1)).specificSurface().innerRadius();
    const float epsilon = 2.f;

    if (innerRNext > innerRThis + epsilon) {
      // next disk is smaller, so it doesn't cover fully subsequent ones
      // of same radius

      int i = 2;
      while ( (fli+i) != group.end()) {
    if ( (**(fli+i)).specificSurface().innerRadius() < 
         innerRNext + epsilon) {
      // following disk has not increased in ineer radius 
      reachableFL.push_back( *(fli+i));
      i++;
    } else {
      break;
    }
      }
    }
  }
}

void SimpleNavigationSchool::linkOuterGroup ( ForwardDetLayer const *  fl, const FDLC &  group, FDLC &  reachableFL  )

protectedvirtual

Definition at line 267 of file SimpleNavigationSchool.cc.

References plotBeamSpotDB::first, plotBeamSpotDB::last, min(), GeometricSearchDet::position(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by linkForwardLayers().

{

  // insert N layers with Z grater than fl

  ConstFDLI first = find_if( group.begin(), group.end(), 
                 not1( DetBelowZ( fl->position().z())));
  if ( first != group.end()) {

    // Hard-wired constant!!!!!!
    ConstFDLI last = min( first + 7, group.end());

    reachableFL.insert( reachableFL.end(), first, last);
  }
}

void SimpleNavigationSchool::linkWithinGroup ( FDLI  fl, const FDLC &  group, FDLC &  reachableFL  )

protectedvirtual

Definition at line 285 of file SimpleNavigationSchool.cc.

References outerRadiusIncrease().

Referenced by linkForwardLayers().

{
  ConstFDLI biggerLayer = outerRadiusIncrease( fl, group);
  if ( biggerLayer != group.end() && biggerLayer != fl+1) {
    reachableFL.push_back( *biggerLayer);
  }
}

SimpleNavigationSchool::StateType SimpleNavigationSchool::navigableLayers ( )

overridevirtual

Implements NavigationSchool.

Definition at line 76 of file SimpleNavigationSchool.cc.

References cuy::ib, mps_fire::result, theBarrelNLC, and theForwardNLC.

Referenced by establishInverseRelations().

{
  StateType result;
  for ( vector< SimpleBarrelNavigableLayer*>::const_iterator 
      ib = theBarrelNLC.begin(); ib != theBarrelNLC.end(); ib++) {
    result.push_back( *ib);
  }
  for ( vector< SimpleForwardNavigableLayer*>::const_iterator 
      ifl = theForwardNLC.begin(); ifl != theForwardNLC.end(); ifl++) {
    result.push_back( *ifl);
  }
  return result;
}

SimpleNavigationSchool::ConstFDLI SimpleNavigationSchool::outerRadiusIncrease ( FDLI  fl, const FDLC &  group  )

protectedvirtual

Definition at line 296 of file SimpleNavigationSchool.cc.

References geometryDiff::epsilon.

Referenced by linkWithinGroup().

{
  const float epsilon = 5.f;
  float outerRadius = (**fl).specificSurface().outerRadius();
  while ( ++fl != group.end()) {
    if ( (**fl).specificSurface().outerRadius() > outerRadius + epsilon) {
      return fl;
    }
  }
  return fl;
}

vector< SimpleNavigationSchool::FDLC > SimpleNavigationSchool::splitForwardLayers ( )

protectedvirtual

Definition at line 309 of file SimpleNavigationSchool.cc.

References begin, end, i, LogDebug, GeometricSearchTracker::posPixelForwardLayers(), GeometricSearchTracker::posTidLayers(), mps_fire::result, theRightLayers, and theTracker.

Referenced by linkForwardLayers().

{
  // only work on positive Z side; negative by mirror symmetry later

  FDLC myRightLayers( theRightLayers);
  FDLI begin = myRightLayers.begin();
  FDLI end   = myRightLayers.end();

  // sort according to inner radius
  sort ( begin, end, DiskLessInnerRadius()); 

  // partition in cylinders
  vector<FDLC> result;
  FDLC current;
  current.push_back( *begin);
  for ( FDLI i = begin+1; i != end; i++) {

#ifdef EDM_ML_DEBUG
    LogDebug("TkNavigation") << "(**i).specificSurface().innerRadius()      = "
                 << (**i).specificSurface().innerRadius() << endl
                 << "(**(i-1)).specificSurface().outerRadius()) = "
                 << (**(i-1)).specificSurface().outerRadius() ;
    LogDebug("TkNavigation") << "(**i).specificSurface().position().z()      = "
                            << (**i).specificSurface().position().z() << endl
                            << "(**(i-1)).specificSurface().position().z() = "
                            << (**(i-1)).specificSurface().position().z() ;
#endif

    // if inner radius of i is larger than outer radius of i-1 then split!
    // FIXME: The solution found for phase2 is a bit dirty, we can do better.
    // For phase2 we compare the EXTENDED pixel with the TID to get the assignment right!
    if ( (**i).specificSurface().innerRadius() > (**(i-1)).specificSurface().outerRadius() ||
         (theTracker->posPixelForwardLayers().back()->specificSurface().position().z() > theTracker->posTidLayers().front()->specificSurface().position().z() &&
          (**i).specificSurface().position().z() < (**(i-1)).specificSurface().position().z()) ){

      LogDebug("TkNavigation") << "found break between groups" ;

      // sort layers in group along Z
      sort ( current.begin(), current.end(), DetLessZ());

      result.push_back(current);
      current.clear();
    }
    current.push_back(*i);
  }
  result.push_back(current); // save last one too 

  // now sort subsets in Z
  for ( vector<FDLC>::iterator ivec = result.begin();
    ivec != result.end(); ivec++) {
    sort( ivec->begin(), ivec->end(), DetLessZ());
  }

  return result;
}

Member Data Documentation

BDLC SimpleNavigationSchool::theBarrelLayers

protected

Definition at line 42 of file SimpleNavigationSchool.h.

Referenced by barrelLength(), establishInverseRelations(), linkBarrelLayers(), linkNextBarrelLayer(), and SimpleNavigationSchool().

float SimpleNavigationSchool::theBarrelLength

protected

Definition at line 46 of file SimpleNavigationSchool.h.

Referenced by barrelLength().

BNLCType SimpleNavigationSchool::theBarrelNLC

protected

Definition at line 50 of file SimpleNavigationSchool.h.

Referenced by cleanMemory(), linkBarrelLayers(), and navigableLayers().

const MagneticField* SimpleNavigationSchool::theField

protected

Definition at line 78 of file SimpleNavigationSchool.h.

Referenced by linkBarrelLayers(), and linkForwardLayers().

FDLC SimpleNavigationSchool::theForwardLayers

protected

Definition at line 43 of file SimpleNavigationSchool.h.

Referenced by establishInverseRelations(), and SimpleNavigationSchool().

FNLCType SimpleNavigationSchool::theForwardNLC

protected

Definition at line 51 of file SimpleNavigationSchool.h.

Referenced by cleanMemory(), linkForwardLayers(), and navigableLayers().

FDLC SimpleNavigationSchool::theLeftLayers

protected

Definition at line 45 of file SimpleNavigationSchool.h.

Referenced by SimpleNavigationSchool().

FDLC SimpleNavigationSchool::theRightLayers

protected

Definition at line 44 of file SimpleNavigationSchool.h.

Referenced by linkNextForwardLayer(), SimpleNavigationSchool(), and splitForwardLayers().

const GeometricSearchTracker* SimpleNavigationSchool::theTracker

protected

Definition at line 79 of file SimpleNavigationSchool.h.

Referenced by SimpleNavigationSchool(), and splitForwardLayers().