osgUtil::Intersector Class Reference

#include <IntersectionVisitor>

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 }

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)
PrecisionHint	getPrecisionHint () const
Public Member Functions inherited from osg::Referenced
	Referenced ()
	Referenced (bool threadSafeRefUnref)
	Referenced (const Referenced &)
Referenced &	operator= (const Referenced &)
virtual void	setThreadSafeRefUnref (bool)
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 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 ()
static void	setDeleteHandler (DeleteHandler *handler)
static DeleteHandler *	getDeleteHandler ()
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

CoordinateFrame

enum osgUtil::Intersector::CoordinateFrame

Enumerator
WINDOW
PROJECTION
VIEW
MODEL

IntersectionLimit

enum osgUtil::Intersector::IntersectionLimit

Enumerator
NO_LIMIT
LIMIT_ONE_PER_DRAWABLE
LIMIT_ONE
LIMIT_NEAREST

PrecisionHint

enum osgUtil::Intersector::PrecisionHint

Hint to precision used in the internal intersections calculations.

Enumerator
USE_DOUBLE_CALCULATIONS
USE_FLOAT_CALCULATIONS

Constructor & Destructor Documentation

Intersector()

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

inline

Member Function Documentation

clone()

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

pure virtual

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

containsIntersections()

virtual bool osgUtil::Intersector::containsIntersections ( )

pure virtual

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

Referenced by reachedLimit().

decrementDisabledCount()

void osgUtil::Intersector::decrementDisabledCount ( )

inline

References _disabledCount.

disabled()

bool osgUtil::Intersector::disabled ( ) const

inline

References _disabledCount.

enter()

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

pure virtual

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

getCoordinateFrame()

CoordinateFrame osgUtil::Intersector::getCoordinateFrame ( ) const

inline

References _coordinateFrame.

getIntersectionLimit()

IntersectionLimit osgUtil::Intersector::getIntersectionLimit ( ) const

inline

References _intersectionLimit.

getPrecisionHint()

PrecisionHint osgUtil::Intersector::getPrecisionHint ( ) const

inline

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

References _precisionHint.

incrementDisabledCount()

void osgUtil::Intersector::incrementDisabledCount ( )

inline

References _disabledCount.

intersect()

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

pure virtual

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

leave()

virtual void osgUtil::Intersector::leave ( )

pure virtual

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

reachedLimit()

bool osgUtil::Intersector::reachedLimit ( )

inline

References _intersectionLimit, containsIntersections(), and LIMIT_ONE.

reset()

virtual void osgUtil::Intersector::reset ( )

inlinevirtual

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

References _disabledCount.

setCoordinateFrame()

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

inline

References _coordinateFrame.

setIntersectionLimit()

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

inline

References _intersectionLimit.

setPrecisionHint()

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

inline

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

References _precisionHint.

Member Data Documentation

_coordinateFrame

CoordinateFrame osgUtil::Intersector::_coordinateFrame

protected

Referenced by getCoordinateFrame(), and setCoordinateFrame().

_disabledCount

unsigned int osgUtil::Intersector::_disabledCount

protected

Referenced by decrementDisabledCount(), disabled(), incrementDisabledCount(), and reset().

_intersectionLimit

IntersectionLimit osgUtil::Intersector::_intersectionLimit

protected

Referenced by getIntersectionLimit(), reachedLimit(), and setIntersectionLimit().

_precisionHint

PrecisionHint osgUtil::Intersector::_precisionHint

protected

Referenced by getPrecisionHint(), and setPrecisionHint().

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

• IntersectionVisitor