Inheritance diagram for osgUtil::IntersectionVisitor:

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 }

Public Member Functions
	IntersectionVisitor (Intersector intersector=0, ReadCallback readCallback=0)

	META_NodeVisitor (osgUtil, IntersectionVisitor) virtual void reset()

void	setIntersector (Intersector *intersector)

Intersector *	getIntersector ()

const Intersector *	getIntersector () const

void	setUseKdTreeWhenAvailable (bool useKdTrees)

bool	getUseKdTreeWhenAvailable () const

void	setDoDummyTraversal (bool dummy)

bool	getDoDummyTraversal () const

void	setReadCallback (ReadCallback *rc)

ReadCallback *	getReadCallback ()

const ReadCallback *	getReadCallback () const

void	pushWindowMatrix (osg::RefMatrix *matrix)

void	pushWindowMatrix (osg::Viewport *viewport)

void	popWindowMatrix ()

osg::RefMatrix *	getWindowMatrix ()

const osg::RefMatrix *	getWindowMatrix () const

void	pushProjectionMatrix (osg::RefMatrix *matrix)

void	popProjectionMatrix ()

osg::RefMatrix *	getProjectionMatrix ()

const osg::RefMatrix *	getProjectionMatrix () const

void	pushViewMatrix (osg::RefMatrix *matrix)

void	popViewMatrix ()

osg::RefMatrix *	getViewMatrix ()

const osg::RefMatrix *	getViewMatrix () const

void	pushModelMatrix (osg::RefMatrix *matrix)

void	popModelMatrix ()

osg::RefMatrix *	getModelMatrix ()

const osg::RefMatrix *	getModelMatrix () const

void	setReferenceEyePoint (const osg::Vec3 &ep)

const osg::Vec3 &	getReferenceEyePoint () 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::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)

virtual	~NodeVisitor ()

virtual const char *	libraryName () const

virtual const char *	className () const

virtual void	reset ()

void	setVisitorType (VisitorType type)

VisitorType	getVisitorType () const

void	setTraversalNumber (unsigned int fn)

unsigned int	getTraversalNumber () const

void	setFrameStamp (FrameStamp *fs)

const FrameStamp *	getFrameStamp () 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	setUserData (Referenced *obj)

Referenced *	getUserData ()

const Referenced *	getUserData () const

void	traverse (Node &node)

void	pushOntoNodePath (Node *node)

void	popFromNodePath ()

NodePath &	getNodePath ()

const NodePath &	getNodePath () const

virtual osg::Vec3	getViewPoint () const

virtual float	getDistanceFromEyePoint (const Vec3 &, bool) const

virtual float	getDistanceToViewPoint (const Vec3 &, bool) const

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 (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)

DatabaseRequestHandler *	getDatabaseRequestHandler ()

const DatabaseRequestHandler *	getDatabaseRequestHandler () const

void	setImageRequestHandler (ImageRequestHandler *handler)

ImageRequestHandler *	getImageRequestHandler ()

const ImageRequestHandler *	getImageRequestHandler () const

Public Member Functions inherited from osg::Referenced
	Referenced ()

	Referenced (bool threadSafeRefUnref)

	Referenced (const Referenced &)

Referenced &	operator= (const Referenced &)

virtual void	setThreadSafeRefUnref (bool threadSafe)

bool	getThreadSafeRefUnref () const

OpenThreads::Mutex *	getRefMutex () const

int	ref () const

int	unref () const

int	unref_nodelete () const

int	referenceCount () const

ObserverSet *	getObserverSet () const

ObserverSet *	getOrCreateObserverSet () 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::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< Referenced >	_userData

ref_ptr< DatabaseRequestHandler >	_databaseRequestHandler

ref_ptr< ImageRequestHandler >	_imageRequestHandler

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::Mutex *	getGlobalReferencedMutex ()

static void	setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)

static bool	getThreadSafeReferenceCounting ()

static void	setDeleteHandler (DeleteHandler *handler)

static DeleteHandler *	getDeleteHandler ()

Detailed Description

InteresectionVisitor 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

typedef std::list< osg::ref_ptr<Intersector> > osgUtil::IntersectionVisitor::IntersectorStack

protected

typedef std::list< osg::ref_ptr<osg::RefMatrix> > osgUtil::IntersectionVisitor::MatrixStack

protected

Member Enumeration Documentation

enum osgUtil::IntersectionVisitor::LODSelectionMode

Enumerator
USE_HIGHEST_LEVEL_OF_DETAIL
USE_EYE_POINT_FOR_LOD_LEVEL_SELECTION

Constructor & Destructor Documentation

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

Member Function Documentation

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

virtual

Reimplemented from osg::NodeVisitor.

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

inlineprotected

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.

bool osgUtil::IntersectionVisitor::getDoDummyTraversal ( ) const

inline

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.

Intersector* osgUtil::IntersectionVisitor::getIntersector ( )

inline

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

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.

LODSelectionMode osgUtil::IntersectionVisitor::getLODSelectionMode ( ) const

inline

Get the LOD selection scheme.

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

inline

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

inline

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

inline

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

inline

ReadCallback* osgUtil::IntersectionVisitor::getReadCallback ( )

inline

Get the read callback.

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

inline

Get the const read callback.

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

inline

Get the reference eye point.

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

inline

Get the coordinate frame of the reference eye point.

bool osgUtil::IntersectionVisitor::getUseKdTreeWhenAvailable ( ) const

inline

Set whether the intersectors should use KdTrees.

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

inline

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

inline

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

inline

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

inline

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

inlineprotected

void osgUtil::IntersectionVisitor::leave ( )

inlineprotected

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

void osgUtil::IntersectionVisitor::pop_clone ( )

inlineprotected

void osgUtil::IntersectionVisitor::popModelMatrix ( )

inline

void osgUtil::IntersectionVisitor::popProjectionMatrix ( )

inline

void osgUtil::IntersectionVisitor::popViewMatrix ( )

inline

void osgUtil::IntersectionVisitor::popWindowMatrix ( )

inline

void osgUtil::IntersectionVisitor::push_clone ( )

inlineprotected

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

inline

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

inline

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

inline

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

inline

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

inline

References osg::Viewport::computeWindowMatrix().

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

inline

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.

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

inline

Set the LOD selection scheme.

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

inline

Set the read callback.

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.

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

inline

Set the coordinate frame of the reference eye point.

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

bool osgUtil::IntersectionVisitor::_dummyTraversal

protected

osg::Vec3 osgUtil::IntersectionVisitor::_eyePoint

mutableprotected

bool osgUtil::IntersectionVisitor::_eyePointDirty

mutableprotected

IntersectorStack osgUtil::IntersectionVisitor::_intersectorStack

protected

LODSelectionMode osgUtil::IntersectionVisitor::_lodSelectionMode

protected

MatrixStack osgUtil::IntersectionVisitor::_modelStack

protected

MatrixStack osgUtil::IntersectionVisitor::_projectionStack

protected

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

protected

osg::Vec3 osgUtil::IntersectionVisitor::_referenceEyePoint

protected

Intersector::CoordinateFrame osgUtil::IntersectionVisitor::_referenceEyePointCoordinateFrame

protected

bool osgUtil::IntersectionVisitor::_useKdTreesWhenAvailable

protected

MatrixStack osgUtil::IntersectionVisitor::_viewStack

protected

MatrixStack osgUtil::IntersectionVisitor::_windowStack

protected

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

IntersectionVisitor

Classes

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation