osgUtil::Intersector Class Reference

Pure virtual base class for implementing custom intersection technique. More...

Inheritance diagram for osgUtil::Intersector:

Public Types
enum	CoordinateFrame { WINDOW, PROJECTION, VIEW, MODEL }
enum	IntersectionLimit { NO_LIMIT, LIMIT_ONE_PER_DRAWABLE, LIMIT_ONE, LIMIT_NEAREST }
enum	PrecisionHint { USE_DOUBLE_CALCULATIONS, USE_FLOAT_CALCULATIONS }
	Hint to precision used in the internal intersections calculations. More...

Public Member Functions
	Intersector (CoordinateFrame cf=MODEL, IntersectionLimit il=NO_LIMIT)
void	setCoordinateFrame (CoordinateFrame cf)
CoordinateFrame	getCoordinateFrame () const
void	setIntersectionLimit (IntersectionLimit limit)
IntersectionLimit	getIntersectionLimit () const
virtual Intersector *	clone (osgUtil::IntersectionVisitor &iv)=0
virtual bool	enter (const osg::Node &node)=0
virtual void	leave ()=0
virtual void	intersect (osgUtil::IntersectionVisitor &iv, osg::Drawable *drawable)=0
virtual void	reset ()
virtual bool	containsIntersections ()=0
bool	disabled () const
void	incrementDisabledCount ()
void	decrementDisabledCount ()
bool	reachedLimit ()
void	setPrecisionHint (PrecisionHint hint)
	Set the hint to what precision to use in the intersections calculations. More...
PrecisionHint	getPrecisionHint () const
	Get the hint to what precision should be used in the intersections calculations. More...
Public Member Functions inherited from osg::Referenced
	Referenced ()
	Referenced (bool threadSafeRefUnref)
	Referenced (const Referenced &)
Referenced &	operator= (const Referenced &)
virtual void	setThreadSafeRefUnref (bool threadSafe)
	Set whether to use a mutex to ensure ref() and unref() are thread safe. More...
bool	getThreadSafeRefUnref () const
	Get whether a mutex is used to ensure ref() and unref() are thread safe. More...
OpenThreads::Mutex *	getRefMutex () const
	Get the mutex used to ensure thread safety of ref()/unref(). More...
int	ref () const
	Increment the reference count by one, indicating that this object has another pointer which is referencing it. More...
int	unref () const
	Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...
int	unref_nodelete () const
	Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...
int	referenceCount () const
	Return the number of pointers currently referencing this object. More...
ObserverSet *	getObserverSet () const
	Get the ObserverSet if one is attached, otherwise return NULL. More...
ObserverSet *	getOrCreateObserverSet () const
	Get the ObserverSet if one is attached, otherwise create an ObserverSet, attach it, then return this newly created ObserverSet. More...
void	addObserver (Observer *observer) const
	Add a Observer that is observing this object, notify the Observer when this object gets deleted. More...
void	removeObserver (Observer *observer) const
	Remove Observer that is observing this object. More...

Protected Attributes
CoordinateFrame	_coordinateFrame
IntersectionLimit	_intersectionLimit
unsigned int	_disabledCount
PrecisionHint	_precisionHint
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 ()
	Get the optional global Referenced mutex, this can be shared between all osg::Referenced. More...
static void	setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)
	Set whether reference counting should use a mutex for thread safe reference counting. More...
static bool	getThreadSafeReferenceCounting ()
	Get whether reference counting is active. More...
static void	setDeleteHandler (DeleteHandler *handler)
	Set a DeleteHandler to which deletion of all referenced counted objects will be delegated. More...
static DeleteHandler *	getDeleteHandler ()
	Get a DeleteHandler. More...
Protected Member Functions inherited from osg::Referenced
virtual	~Referenced ()
void	signalObserversAndDelete (bool signalDelete, bool doDelete) const
void	deleteUsingDeleteHandler () const

Detailed Description

Pure virtual base class for implementing custom intersection technique.

To implement a specific intersection technique on must override all the pure virtual methods, concrete examples of how to do this can be seen in the LineSegmentIntersector.

Member Enumeration Documentation

enum osgUtil::Intersector::CoordinateFrame

Enumerator
WINDOW
PROJECTION
VIEW
MODEL

enum osgUtil::Intersector::IntersectionLimit

Enumerator
NO_LIMIT
LIMIT_ONE_PER_DRAWABLE
LIMIT_ONE
LIMIT_NEAREST

enum osgUtil::Intersector::PrecisionHint

Hint to precision used in the internal intersections calculations.

Enumerator
USE_DOUBLE_CALCULATIONS
USE_FLOAT_CALCULATIONS

Constructor & Destructor Documentation

osgUtil::Intersector::Intersector ( CoordinateFrame  cf = MODEL, IntersectionLimit  il = NO_LIMIT  )

inline

Member Function Documentation

virtual Intersector* osgUtil::Intersector::clone ( osgUtil::IntersectionVisitor &  iv )

pure virtual

Implemented in osgUtil::IntersectorGroup, osgUtil::PolytopeIntersector, osgUtil::RayIntersector, osgUtil::LineSegmentIntersector, and osgUtil::PlaneIntersector.

virtual bool osgUtil::Intersector::containsIntersections ( )

pure virtual

Implemented in osgUtil::IntersectorGroup, osgUtil::PolytopeIntersector, osgUtil::RayIntersector, osgUtil::LineSegmentIntersector, and osgUtil::PlaneIntersector.

void osgUtil::Intersector::decrementDisabledCount ( )

inline

bool osgUtil::Intersector::disabled ( ) const

inline

virtual bool osgUtil::Intersector::enter ( const osg::Node &  node )

pure virtual

Implemented in osgUtil::IntersectorGroup, osgUtil::PolytopeIntersector, osgUtil::RayIntersector, osgUtil::LineSegmentIntersector, and osgUtil::PlaneIntersector.

CoordinateFrame osgUtil::Intersector::getCoordinateFrame ( ) const

inline

IntersectionLimit osgUtil::Intersector::getIntersectionLimit ( ) const

inline

PrecisionHint osgUtil::Intersector::getPrecisionHint ( ) const

inline

Get the hint to what precision should be used in the intersections calculations.

void osgUtil::Intersector::incrementDisabledCount ( )

inline

virtual void osgUtil::Intersector::intersect ( osgUtil::IntersectionVisitor &  iv, osg::Drawable *  drawable  )

pure virtual

Implemented in osgUtil::IntersectorGroup, osgUtil::PolytopeIntersector, osgUtil::RayIntersector, osgUtil::LineSegmentIntersector, and osgUtil::PlaneIntersector.

virtual void osgUtil::Intersector::leave ( )

pure virtual

Implemented in osgUtil::IntersectorGroup, osgUtil::PolytopeIntersector, osgUtil::RayIntersector, osgUtil::LineSegmentIntersector, and osgUtil::PlaneIntersector.

bool osgUtil::Intersector::reachedLimit ( )

inline

virtual void osgUtil::Intersector::reset ( )

inlinevirtual

Reimplemented in osgUtil::IntersectorGroup, osgUtil::PolytopeIntersector, osgUtil::RayIntersector, osgUtil::LineSegmentIntersector, and osgUtil::PlaneIntersector.

void osgUtil::Intersector::setCoordinateFrame ( CoordinateFrame  cf )

inline

void osgUtil::Intersector::setIntersectionLimit ( IntersectionLimit  limit )

inline

void osgUtil::Intersector::setPrecisionHint ( PrecisionHint  hint )

inline

Set the hint to what precision to use in the intersections calculations.

Member Data Documentation

CoordinateFrame osgUtil::Intersector::_coordinateFrame

protected

unsigned int osgUtil::Intersector::_disabledCount

protected

IntersectionLimit osgUtil::Intersector::_intersectionLimit

protected

PrecisionHint osgUtil::Intersector::_precisionHint

protected

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

• osgUtil/IntersectionVisitor