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osgUtil::IntersectionVisitor Class Reference

#include <IntersectionVisitor>

Inheritance diagram for osgUtil::IntersectionVisitor:
osg::NodeVisitor osg::Object osg::Referenced

Classes

struct  ReadCallback
 

Public Types

enum  LODSelectionMode { USE_HIGHEST_LEVEL_OF_DETAIL , USE_EYE_POINT_FOR_LOD_LEVEL_SELECTION }
 
- Public Types inherited from osg::NodeVisitor
enum  TraversalMode { TRAVERSE_NONE , TRAVERSE_PARENTS , TRAVERSE_ALL_CHILDREN , TRAVERSE_ACTIVE_CHILDREN }
 
enum  VisitorType {
  NODE_VISITOR = 0 , UPDATE_VISITOR , EVENT_VISITOR , COLLECT_OCCLUDER_VISITOR ,
  CULL_VISITOR , INTERSECTION_VISITOR
}
 
- Public Types inherited from osg::Object
enum  DataVariance { DYNAMIC , STATIC , UNSPECIFIED }
 

Public Member Functions

 IntersectionVisitor (Intersector *intersector=0, ReadCallback *readCallback=0)
 
 META_NodeVisitor (osgUtil, IntersectionVisitor) virtual osgUtil
 
virtual const osgUtil::IntersectionVisitorasIntersectionVisitor () const
 
virtual void reset ()
 
void setIntersector (Intersector *intersector)
 
IntersectorgetIntersector ()
 
const IntersectorgetIntersector () const
 
void setUseKdTreeWhenAvailable (bool useKdTrees)
 
bool getUseKdTreeWhenAvailable () const
 
void setDoDummyTraversal (bool dummy)
 
bool getDoDummyTraversal () const
 
void setReadCallback (ReadCallback *rc)
 
ReadCallbackgetReadCallback ()
 
const ReadCallbackgetReadCallback () const
 
void pushWindowMatrix (osg::RefMatrix *matrix)
 
void pushWindowMatrix (osg::Viewport *viewport)
 
void popWindowMatrix ()
 
osg::RefMatrixgetWindowMatrix ()
 
const osg::RefMatrixgetWindowMatrix () const
 
void pushProjectionMatrix (osg::RefMatrix *matrix)
 
void popProjectionMatrix ()
 
osg::RefMatrixgetProjectionMatrix ()
 
const osg::RefMatrixgetProjectionMatrix () const
 
void pushViewMatrix (osg::RefMatrix *matrix)
 
void popViewMatrix ()
 
osg::RefMatrixgetViewMatrix ()
 
const osg::RefMatrixgetViewMatrix () const
 
void pushModelMatrix (osg::RefMatrix *matrix)
 
void popModelMatrix ()
 
osg::RefMatrixgetModelMatrix ()
 
const osg::RefMatrixgetModelMatrix () const
 
void setReferenceEyePoint (const osg::Vec3 &ep)
 
const osg::Vec3getReferenceEyePoint () const
 
void setReferenceEyePointCoordinateFrame (Intersector::CoordinateFrame cf)
 
Intersector::CoordinateFrame getReferenceEyePointCoordinateFrame () const
 
virtual osg::Vec3 getEyePoint () const
 
void setLODSelectionMode (LODSelectionMode mode)
 
LODSelectionMode getLODSelectionMode () const
 
virtual float getDistanceToEyePoint (const osg::Vec3 &pos, bool withLODScale) const
 
virtual void apply (osg::Node &node)
 
virtual void apply (osg::Drawable &drawable)
 
virtual void apply (osg::Geode &geode)
 
virtual void apply (osg::Billboard &geode)
 
virtual void apply (osg::Group &group)
 
virtual void apply (osg::LOD &lod)
 
virtual void apply (osg::PagedLOD &lod)
 
virtual void apply (osg::Transform &transform)
 
virtual void apply (osg::Projection &projection)
 
virtual void apply (osg::Camera &camera)
 
- Public Member Functions inherited from osg::NodeVisitor
 NodeVisitor (TraversalMode tm=TRAVERSE_NONE)
 
 NodeVisitor (VisitorType type, TraversalMode tm=TRAVERSE_NONE)
 
 NodeVisitor (const NodeVisitor &nv, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
 
virtual ~NodeVisitor ()
 
 META_Object (osg, NodeVisitor) virtual NodeVisitor *asNodeVisitor()
 
virtual const NodeVisitorasNodeVisitor () const
 
virtual osgUtil::UpdateVisitorasUpdateVisitor ()
 
virtual const osgUtil::UpdateVisitorasUpdateVisitor () const
 
virtual osgUtil::CullVisitorasCullVisitor ()
 
virtual const osgUtil::CullVisitorasCullVisitor () const
 
virtual osgGA::EventVisitorasEventVisitor ()
 
virtual const osgGA::EventVisitorasEventVisitor () const
 
virtual osgUtil::IntersectionVisitorasIntersectionVisitor ()
 
virtual osg::CullStackasCullStack ()
 
virtual const osg::CullStackasCullStack () const
 
void setVisitorType (VisitorType type)
 
VisitorType getVisitorType () const
 
void setTraversalNumber (unsigned int fn)
 
unsigned int getTraversalNumber () const
 
void setFrameStamp (FrameStamp *fs)
 
const FrameStampgetFrameStamp () const
 
void setTraversalMask (Node::NodeMask mask)
 
Node::NodeMask getTraversalMask () const
 
void setNodeMaskOverride (Node::NodeMask mask)
 
Node::NodeMask getNodeMaskOverride () const
 
bool validNodeMask (const osg::Node &node) const
 
void setTraversalMode (TraversalMode mode)
 
TraversalMode getTraversalMode () const
 
void setValueMap (ValueMap *ps)
 
ValueMapgetValueMap ()
 
const ValueMapgetValueMap () const
 
ValueMapgetOrCreateValueMap ()
 
void setValueStack (ValueStack *ps)
 
ValueStackgetValueStack ()
 
const ValueStackgetValueStack () const
 
ValueStackgetOrCreateValueStack ()
 
void traverse (Node &node)
 
void pushOntoNodePath (Node *node)
 
void popFromNodePath ()
 
NodePathgetNodePath ()
 
const NodePathgetNodePath () const
 
virtual osg::Vec3 getViewPoint () const
 
virtual float getDistanceFromEyePoint (const Vec3 &, bool) const
 
virtual float getDistanceToViewPoint (const Vec3 &, bool) const
 
virtual void apply (Geometry &geometry)
 
virtual void apply (ProxyNode &node)
 
virtual void apply (CoordinateSystemNode &node)
 
virtual void apply (ClipNode &node)
 
virtual void apply (TexGenNode &node)
 
virtual void apply (LightSource &node)
 
virtual void apply (CameraView &node)
 
virtual void apply (MatrixTransform &node)
 
virtual void apply (PositionAttitudeTransform &node)
 
virtual void apply (AutoTransform &node)
 
virtual void apply (Switch &node)
 
virtual void apply (Sequence &node)
 
virtual void apply (ClearNode &node)
 
virtual void apply (OccluderNode &node)
 
virtual void apply (OcclusionQueryNode &node)
 
void setDatabaseRequestHandler (DatabaseRequestHandler *handler)
 
DatabaseRequestHandlergetDatabaseRequestHandler ()
 
const DatabaseRequestHandlergetDatabaseRequestHandler () const
 
void setImageRequestHandler (ImageRequestHandler *handler)
 
ImageRequestHandlergetImageRequestHandler ()
 
const ImageRequestHandlergetImageRequestHandler () const
 
- Public Member Functions inherited from osg::Object
 Object ()
 
 Object (bool threadSafeRefUnref)
 
 Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
 
virtual ObjectcloneType () const =0
 
virtual Objectclone (const CopyOp &) const =0
 
virtual bool isSameKindAs (const Object *) const
 
virtual const char * libraryName () const =0
 
virtual const char * className () const =0
 
std::string getCompoundClassName () const
 
virtual NodeasNode ()
 
virtual const NodeasNode () const
 
virtual NodeVisitorasNodeVisitor ()
 
virtual StateSetasStateSet ()
 
virtual const StateSetasStateSet () const
 
virtual StateAttributeasStateAttribute ()
 
virtual const StateAttributeasStateAttribute () const
 
virtual UniformasUniform ()
 
virtual const UniformasUniform () const
 
virtual CameraasCamera ()
 
virtual const CameraasCamera () const
 
virtual DrawableasDrawable ()
 
virtual const DrawableasDrawable () const
 
virtual CallbackasCallback ()
 
virtual const CallbackasCallback () const
 
virtual CallbackObjectasCallbackObject ()
 
virtual const CallbackObjectasCallbackObject () const
 
virtual UserDataContainerasUserDataContainer ()
 
virtual const UserDataContainerasUserDataContainer () const
 
virtual ValueObjectasValueObject ()
 
virtual const ValueObjectasValueObject () const
 
virtual ImageasImage ()
 
virtual const ImageasImage () const
 
virtual void setThreadSafeRefUnref (bool threadSafe)
 
virtual void setName (const std::string &name)
 
void setName (const char *name)
 
const std::string & getName () const
 
void setDataVariance (DataVariance dv)
 
DataVariance getDataVariance () const
 
virtual void computeDataVariance ()
 
void setUserDataContainer (osg::UserDataContainer *udc)
 
template<class T >
void setUserDataContainer (const ref_ptr< T > &udc)
 
osg::UserDataContainergetUserDataContainer ()
 
const osg::UserDataContainergetUserDataContainer () const
 
osg::UserDataContainergetOrCreateUserDataContainer ()
 
virtual void setUserData (Referenced *obj)
 
template<class T >
void setUserData (const ref_ptr< T > &ud)
 
virtual ReferencedgetUserData ()
 
virtual const ReferencedgetUserData () const
 
template<typename T >
bool getUserValue (const std::string &name, T &value) const
 
template<typename T >
void setUserValue (const std::string &name, const T &value)
 
virtual void resizeGLObjectBuffers (unsigned int)
 
virtual void releaseGLObjects (osg::State *=0) const
 
template<typename T >
BoolValueObject UCharValueObject UShortValueObject UIntValueObject DoubleValueObject Vec3fValueObject Vec2dValueObject Vec4dValueObject PlaneValueObject MatrixdValueObject BoundingBoxdValueObject BoundingSpheredValueObject bool getUserValue (const std::string &name, T &value) const
 
- Public Member Functions inherited from osg::Referenced
 Referenced ()
 
 Referenced (bool threadSafeRefUnref)
 
 Referenced (const Referenced &)
 
Referencedoperator= (const Referenced &)
 
bool getThreadSafeRefUnref () const
 
OpenThreads::MutexgetRefMutex () const
 
int ref () const
 
int unref () const
 
int unref_nodelete () const
 
int referenceCount () const
 
ObserverSetgetObserverSet () const
 
ObserverSetgetOrCreateObserverSet () const
 
void addObserver (Observer *observer) const
 
void removeObserver (Observer *observer) const
 

Protected Types

typedef std::list< osg::ref_ptr< Intersector > > IntersectorStack
 
typedef std::list< osg::ref_ptr< osg::RefMatrix > > MatrixStack
 

Protected Member Functions

bool enter (const osg::Node &node)
 
void leave ()
 
void intersect (osg::Drawable *drawable)
 
void push_clone ()
 
void pop_clone ()
 
- Protected Member Functions inherited from osg::Object
virtual ~Object ()
 
- Protected Member Functions inherited from osg::Referenced
virtual ~Referenced ()
 
void signalObserversAndDelete (bool signalDelete, bool doDelete) const
 
void deleteUsingDeleteHandler () const
 

Protected Attributes

IntersectorStack _intersectorStack
 
bool _useKdTreesWhenAvailable
 
bool _dummyTraversal
 
osg::ref_ptr< ReadCallback_readCallback
 
MatrixStack _windowStack
 
MatrixStack _projectionStack
 
MatrixStack _viewStack
 
MatrixStack _modelStack
 
osg::Vec3 _referenceEyePoint
 
Intersector::CoordinateFrame _referenceEyePointCoordinateFrame
 
LODSelectionMode _lodSelectionMode
 
bool _eyePointDirty
 
osg::Vec3 _eyePoint
 
- Protected Attributes inherited from osg::NodeVisitor
VisitorType _visitorType
 
unsigned int _traversalNumber
 
ref_ptr< FrameStamp_frameStamp
 
TraversalMode _traversalMode
 
Node::NodeMask _traversalMask
 
Node::NodeMask _nodeMaskOverride
 
NodePath _nodePath
 
ref_ptr< DatabaseRequestHandler_databaseRequestHandler
 
ref_ptr< ImageRequestHandler_imageRequestHandler
 
osg::ref_ptr< ValueMap_valueMap
 
osg::ref_ptr< ValueStack_valueStack
 
- Protected Attributes inherited from osg::Object
std::string _name
 
DataVariance _dataVariance
 
osg::UserDataContainer_userDataContainer
 
- Protected Attributes inherited from osg::Referenced
OpenThreads::AtomicPtr _observerSet
 
OpenThreads::Atomic _refCount
 

Additional Inherited Members

- Static Public Member Functions inherited from osg::Referenced
static OpenThreads::MutexgetGlobalReferencedMutex ()
 
static void setDeleteHandler (DeleteHandler *handler)
 
static DeleteHandlergetDeleteHandler ()
 

Detailed Description

IntersectionVisitor is used to testing for intersections with the scene, traversing the scene using generic osgUtil::Intersector's to test against the scene. To implement different types of intersection techniques, one implements custom versions of the osgUtil::Intersector, and then pass the constructed intersector to the IntersectionVisitor.

Member Typedef Documentation

◆ IntersectorStack

◆ MatrixStack

Member Enumeration Documentation

◆ LODSelectionMode

Enumerator
USE_HIGHEST_LEVEL_OF_DETAIL 
USE_EYE_POINT_FOR_LOD_LEVEL_SELECTION 

Constructor & Destructor Documentation

◆ IntersectionVisitor()

osgUtil::IntersectionVisitor::IntersectionVisitor ( Intersector intersector = 0,
ReadCallback readCallback = 0 
)

Member Function Documentation

◆ apply() [1/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Billboard geode)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [2/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Camera camera)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [3/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Drawable drawable)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [4/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Geode geode)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [5/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Group group)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [6/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::LOD lod)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [7/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Node node)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [8/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::PagedLOD lod)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [9/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Projection projection)
virtual

Reimplemented from osg::NodeVisitor.

◆ apply() [10/10]

virtual void osgUtil::IntersectionVisitor::apply ( osg::Transform transform)
virtual

Reimplemented from osg::NodeVisitor.

◆ asIntersectionVisitor()

virtual const osgUtil::IntersectionVisitor * osgUtil::IntersectionVisitor::asIntersectionVisitor ( ) const
inlinevirtual

convert 'const this' into a const osgUtil::IntersectionVisitor pointer if Object is a IntersectionVisitor, otherwise return 0. Equivalent to dynamic_cast<const osgUtil::IntersectionVisitor*>(this).

Reimplemented from osg::NodeVisitor.

◆ enter()

bool osgUtil::IntersectionVisitor::enter ( const osg::Node node)
inlineprotected

◆ getDistanceToEyePoint()

virtual float osgUtil::IntersectionVisitor::getDistanceToEyePoint ( const osg::Vec3 pos,
bool  withLODScale 
) const
virtual

Get the distance from a point to the eye point, distance value in local coordinate system. This is calculated using the pseudo-EyePoint (above) when doing LOD calculcations.

Reimplemented from osg::NodeVisitor.

◆ getDoDummyTraversal()

bool osgUtil::IntersectionVisitor::getDoDummyTraversal ( ) const
inline

◆ getEyePoint()

virtual osg::Vec3 osgUtil::IntersectionVisitor::getEyePoint ( ) const
virtual

Get the eye point in the local coordinate frame a given traversal point.

Reimplemented from osg::NodeVisitor.

◆ getIntersector() [1/2]

Intersector * osgUtil::IntersectionVisitor::getIntersector ( )
inline

Get the intersector that will be used to intersect with the scene, and to store any hits that occur.

◆ getIntersector() [2/2]

const Intersector * osgUtil::IntersectionVisitor::getIntersector ( ) const
inline

Get the const intersector that will be used to intersect with the scene, and to store any hits that occur.

◆ getLODSelectionMode()

LODSelectionMode osgUtil::IntersectionVisitor::getLODSelectionMode ( ) const
inline

Get the LOD selection scheme.

◆ getModelMatrix() [1/2]

osg::RefMatrix * osgUtil::IntersectionVisitor::getModelMatrix ( )
inline

◆ getModelMatrix() [2/2]

const osg::RefMatrix * osgUtil::IntersectionVisitor::getModelMatrix ( ) const
inline

◆ getProjectionMatrix() [1/2]

osg::RefMatrix * osgUtil::IntersectionVisitor::getProjectionMatrix ( )
inline

◆ getProjectionMatrix() [2/2]

const osg::RefMatrix * osgUtil::IntersectionVisitor::getProjectionMatrix ( ) const
inline

◆ getReadCallback() [1/2]

ReadCallback * osgUtil::IntersectionVisitor::getReadCallback ( )
inline

Get the read callback.

◆ getReadCallback() [2/2]

const ReadCallback * osgUtil::IntersectionVisitor::getReadCallback ( ) const
inline

Get the const read callback.

◆ getReferenceEyePoint()

const osg::Vec3 & osgUtil::IntersectionVisitor::getReferenceEyePoint ( ) const
inline

Get the reference eye point.

◆ getReferenceEyePointCoordinateFrame()

Intersector::CoordinateFrame osgUtil::IntersectionVisitor::getReferenceEyePointCoordinateFrame ( ) const
inline

Get the coordinate frame of the reference eye point.

◆ getUseKdTreeWhenAvailable()

bool osgUtil::IntersectionVisitor::getUseKdTreeWhenAvailable ( ) const
inline

Set whether the intersectors should use KdTrees.

◆ getViewMatrix() [1/2]

osg::RefMatrix * osgUtil::IntersectionVisitor::getViewMatrix ( )
inline

◆ getViewMatrix() [2/2]

const osg::RefMatrix * osgUtil::IntersectionVisitor::getViewMatrix ( ) const
inline

◆ getWindowMatrix() [1/2]

osg::RefMatrix * osgUtil::IntersectionVisitor::getWindowMatrix ( )
inline

◆ getWindowMatrix() [2/2]

const osg::RefMatrix * osgUtil::IntersectionVisitor::getWindowMatrix ( ) const
inline

◆ intersect()

void osgUtil::IntersectionVisitor::intersect ( osg::Drawable drawable)
inlineprotected

◆ leave()

void osgUtil::IntersectionVisitor::leave ( )
inlineprotected

◆ META_NodeVisitor()

osgUtil::IntersectionVisitor::META_NodeVisitor ( osgUtil  ,
IntersectionVisitor   
)
inline

Convert 'this' into a osgUtil::IntersectionVisitor pointer if Object is a IntersectionVisitor, otherwise return 0. Equivalent to dynamic_cast<osgUtil::IntersectionVisitor*>(this).

◆ pop_clone()

void osgUtil::IntersectionVisitor::pop_clone ( )
inlineprotected

◆ popModelMatrix()

void osgUtil::IntersectionVisitor::popModelMatrix ( )
inline

◆ popProjectionMatrix()

void osgUtil::IntersectionVisitor::popProjectionMatrix ( )
inline

◆ popViewMatrix()

void osgUtil::IntersectionVisitor::popViewMatrix ( )
inline

◆ popWindowMatrix()

void osgUtil::IntersectionVisitor::popWindowMatrix ( )
inline

◆ push_clone()

void osgUtil::IntersectionVisitor::push_clone ( )
inlineprotected

◆ pushModelMatrix()

void osgUtil::IntersectionVisitor::pushModelMatrix ( osg::RefMatrix matrix)
inline

◆ pushProjectionMatrix()

void osgUtil::IntersectionVisitor::pushProjectionMatrix ( osg::RefMatrix matrix)
inline

◆ pushViewMatrix()

void osgUtil::IntersectionVisitor::pushViewMatrix ( osg::RefMatrix matrix)
inline

◆ pushWindowMatrix() [1/2]

void osgUtil::IntersectionVisitor::pushWindowMatrix ( osg::RefMatrix matrix)
inline

◆ pushWindowMatrix() [2/2]

void osgUtil::IntersectionVisitor::pushWindowMatrix ( osg::Viewport viewport)
inline

◆ reset()

virtual void osgUtil::IntersectionVisitor::reset ( )
virtual

Method to call to reset visitor. Useful if your visitor accumulates state during a traversal, and you plan to reuse the visitor. To flush that state for the next traversal: call reset() prior to each traversal.

Reimplemented from osg::NodeVisitor.

◆ setDoDummyTraversal()

void osgUtil::IntersectionVisitor::setDoDummyTraversal ( bool  dummy)
inline

◆ setIntersector()

void osgUtil::IntersectionVisitor::setIntersector ( Intersector intersector)

Set the intersector that will be used to intersect with the scene, and to store any hits that occur.

◆ setLODSelectionMode()

void osgUtil::IntersectionVisitor::setLODSelectionMode ( LODSelectionMode  mode)
inline

Set the LOD selection scheme.

◆ setReadCallback()

void osgUtil::IntersectionVisitor::setReadCallback ( ReadCallback rc)
inline

Set the read callback.

◆ setReferenceEyePoint()

void osgUtil::IntersectionVisitor::setReferenceEyePoint ( const osg::Vec3 ep)
inline

Set the reference eye point that is used for nodes that require an eye point to position themselves, such as billboards.

◆ setReferenceEyePointCoordinateFrame()

void osgUtil::IntersectionVisitor::setReferenceEyePointCoordinateFrame ( Intersector::CoordinateFrame  cf)
inline

Set the coordinate frame of the reference eye point.

◆ setUseKdTreeWhenAvailable()

void osgUtil::IntersectionVisitor::setUseKdTreeWhenAvailable ( bool  useKdTrees)
inline

Set whether the intersectors should use KdTrees when they are found on the scene graph.

Member Data Documentation

◆ _dummyTraversal

bool osgUtil::IntersectionVisitor::_dummyTraversal
protected

◆ _eyePoint

osg::Vec3 osgUtil::IntersectionVisitor::_eyePoint
mutableprotected

◆ _eyePointDirty

bool osgUtil::IntersectionVisitor::_eyePointDirty
mutableprotected

◆ _intersectorStack

IntersectorStack osgUtil::IntersectionVisitor::_intersectorStack
protected

◆ _lodSelectionMode

LODSelectionMode osgUtil::IntersectionVisitor::_lodSelectionMode
protected

◆ _modelStack

MatrixStack osgUtil::IntersectionVisitor::_modelStack
protected

◆ _projectionStack

MatrixStack osgUtil::IntersectionVisitor::_projectionStack
protected

◆ _readCallback

osg::ref_ptr<ReadCallback> osgUtil::IntersectionVisitor::_readCallback
protected

◆ _referenceEyePoint

osg::Vec3 osgUtil::IntersectionVisitor::_referenceEyePoint
protected

◆ _referenceEyePointCoordinateFrame

Intersector::CoordinateFrame osgUtil::IntersectionVisitor::_referenceEyePointCoordinateFrame
protected

◆ _useKdTreesWhenAvailable

bool osgUtil::IntersectionVisitor::_useKdTreesWhenAvailable
protected

◆ _viewStack

MatrixStack osgUtil::IntersectionVisitor::_viewStack
protected

◆ _windowStack

MatrixStack osgUtil::IntersectionVisitor::_windowStack
protected

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