#include <RayIntersector.h>

Inheritance diagram for osgUtil::RayIntersector:

Collaboration diagram for osgUtil::RayIntersector:

Classes
struct	Intersection

Public Types
typedef std::multiset < Intersection >	Intersections

Public Types inherited from osgUtil::Intersector
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
	RayIntersector (CoordinateFrame cf=MODEL, RayIntersector *parent=NULL, osgUtil::Intersector::IntersectionLimit intersectionLimit=osgUtil::Intersector::NO_LIMIT)

	RayIntersector (const osg::Vec3d &start, const osg::Vec3d &direction)

	RayIntersector (CoordinateFrame cf, const osg::Vec3d &start, const osg::Vec3d &direction, RayIntersector *parent=NULL, osgUtil::Intersector::IntersectionLimit intersectionLimit=osgUtil::Intersector::NO_LIMIT)

	RayIntersector (CoordinateFrame cf, double x, double y)

void	insertIntersection (const Intersection &intersection)

Intersections &	getIntersections ()

Intersection	getFirstIntersection ()

virtual void	setStart (const osg::Vec3d &start)

const osg::Vec3d &	getStart () const

virtual void	setDirection (const osg::Vec3d &dir)

const osg::Vec3d &	getDirection () const

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

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

virtual void	leave ()

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

virtual void	reset ()

virtual bool	containsIntersections ()

Public Member Functions inherited from osgUtil::Intersector
	Intersector (CoordinateFrame cf=MODEL, IntersectionLimit il=NO_LIMIT)

void	setCoordinateFrame (CoordinateFrame cf)

CoordinateFrame	getCoordinateFrame () const

void	setIntersectionLimit (IntersectionLimit limit)

IntersectionLimit	getIntersectionLimit () const

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 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 Member Functions
virtual bool	intersects (const osg::BoundingSphere &bs)

bool	intersectAndClip (osg::Vec3d &s, const osg::Vec3d &d, osg::Vec3d &e, const osg::BoundingBox &bb)

Protected Member Functions inherited from osg::Referenced
virtual	~Referenced ()

void	signalObserversAndDelete (bool signalDelete, bool doDelete) const

void	deleteUsingDeleteHandler () const

Protected Attributes
RayIntersector *	_parent

osg::Vec3d	_start

osg::Vec3d	_direction

Intersections	_intersections

Protected Attributes inherited from osgUtil::Intersector
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	setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)

static bool	getThreadSafeReferenceCounting ()

static void	setDeleteHandler (DeleteHandler *handler)

static DeleteHandler *	getDeleteHandler ()

Detailed Description

RayIntersector implements possibly-infinite line intersections with the scene graph.

Compared with LineSegmentIntersector, RayIntersector supports infinite intersection lines, start and end point can be given in homogeneous coordinates and projection matrix is allowed to have z-far plane at infinity (often used in shadow volume technique).

Currently, picking of objects at infinity is not supported. Please, contribute.

The class is be used in conjunction with IntersectionVisitor.

Definition at line 32 of file RayIntersector.h.

Member Typedef Documentation

typedef std::multiset<Intersection> osgUtil::RayIntersector::Intersections

Definition at line 86 of file RayIntersector.h.

Constructor & Destructor Documentation

osgUtil::RayIntersector::RayIntersector	(	CoordinateFrame	cf = `MODEL`,
		RayIntersector *	parent = `NULL`,
		osgUtil::Intersector::IntersectionLimit	intersectionLimit = `osgUtil::Intersector::NO_LIMIT`
	)

Construct a RayIntersector. You will need to provide start and end point, or start point and direction. See setStart() and setDirecton().

osgUtil::RayIntersector::RayIntersector	(	const osg::Vec3d &	start,
		const osg::Vec3d &	direction
	)

Construct a RayIntersector that runs from start point in specified direction to the infinity. Start and direction are provided in MODEL coordinates.

osgUtil::RayIntersector::RayIntersector	(	CoordinateFrame	cf,
		const osg::Vec3d &	start,
		const osg::Vec3d &	direction,
		RayIntersector *	parent = `NULL`,
		osgUtil::Intersector::IntersectionLimit	intersectionLimit = `osgUtil::Intersector::NO_LIMIT`
	)

Construct a RayIntersector the runs from start point in specified direction to the infinity in the specified coordinate frame.

osgUtil::RayIntersector::RayIntersector	(	CoordinateFrame	cf,
		double	x,
		double	y
	)

Convenience constructor for supporting picking in WINDOW and PROJECTION coordinates. In WINDOW coordinates, it creates a start value of (x,y,0) and end value of (x,y,1). In PROJECTION coordinates (clip space cube), it creates a start value of (x,y,-1) and end value of (x,y,1). In VIEW and MODEL coordinates, it creates a start value of (x,y,0) and end value of (x,y,1).

Member Function Documentation

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

virtual

Implements osgUtil::Intersector.

virtual bool osgUtil::RayIntersector::containsIntersections ( )

inlinevirtual

Implements osgUtil::Intersector.

Definition at line 110 of file RayIntersector.h.

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

virtual

Implements osgUtil::Intersector.

const osg::Vec3d& osgUtil::RayIntersector::getDirection ( ) const

inline

Definition at line 96 of file RayIntersector.h.

Intersection osgUtil::RayIntersector::getFirstIntersection ( )

inline

Definition at line 90 of file RayIntersector.h.

Intersections& osgUtil::RayIntersector::getIntersections ( )

inline

Definition at line 89 of file RayIntersector.h.

const osg::Vec3d& osgUtil::RayIntersector::getStart ( ) const

inline

Definition at line 93 of file RayIntersector.h.

void osgUtil::RayIntersector::insertIntersection ( const Intersection & intersection )

inline

Definition at line 88 of file RayIntersector.h.

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

virtual

Implements osgUtil::Intersector.

bool osgUtil::RayIntersector::intersectAndClip	(	osg::Vec3d &	s,
		const osg::Vec3d &	d,
		osg::Vec3d &	e,
		const osg::BoundingBox &	bb
	)

protected

virtual bool osgUtil::RayIntersector::intersects ( const osg::BoundingSphere & bs )

protectedvirtual

virtual void osgUtil::RayIntersector::leave ( )

virtual

Implements osgUtil::Intersector.

virtual void osgUtil::RayIntersector::reset ( )

virtual

Reimplemented from osgUtil::Intersector.

virtual void osgUtil::RayIntersector::setDirection ( const osg::Vec3d & dir )

inlinevirtual

Definition at line 95 of file RayIntersector.h.

virtual void osgUtil::RayIntersector::setStart ( const osg::Vec3d & start )

inlinevirtual

Definition at line 92 of file RayIntersector.h.

Member Data Documentation

osg::Vec3d osgUtil::RayIntersector::_direction

protected

Definition at line 120 of file RayIntersector.h.

Intersections osgUtil::RayIntersector::_intersections

protected

Definition at line 122 of file RayIntersector.h.

RayIntersector* osgUtil::RayIntersector::_parent

protected

Definition at line 117 of file RayIntersector.h.

osg::Vec3d osgUtil::RayIntersector::_start

protected

Definition at line 119 of file RayIntersector.h.

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

osg_head/include/osgUtil/RayIntersector.h

Classes

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation