osgUtil::LineSegmentIntersector Class Reference

#include <LineSegmentIntersector>

Inheritance diagram for osgUtil::LineSegmentIntersector:

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
	LineSegmentIntersector (const osg::Vec3d &start, const osg::Vec3d &end)
	LineSegmentIntersector (CoordinateFrame cf, const osg::Vec3d &start, const osg::Vec3d &end, LineSegmentIntersector *parent=NULL, osgUtil::Intersector::IntersectionLimit intersectionLimit=osgUtil::Intersector::NO_LIMIT)
	LineSegmentIntersector (CoordinateFrame cf, double x, double y)
void	insertIntersection (const Intersection &intersection)
Intersections &	getIntersections ()
Intersection	getFirstIntersection ()
void	setStart (const osg::Vec3d &start)
const osg::Vec3d &	getStart () const
void	setEnd (const osg::Vec3d &end)
const osg::Vec3d &	getEnd () 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	intersect (osgUtil::IntersectionVisitor &iv, osg::Drawable *drawable, const osg::Vec3d &s, const osg::Vec3d &e)
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)
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

Static Public Member Functions
static osg::Matrix	getTransformation (osgUtil::IntersectionVisitor &iv, CoordinateFrame cf)
Static Public Member Functions inherited from osg::Referenced
static OpenThreads::Mutex *	getGlobalReferencedMutex ()
static void	setDeleteHandler (DeleteHandler *handler)
static DeleteHandler *	getDeleteHandler ()

Protected Member Functions
bool	intersects (const osg::BoundingSphere &bs)
bool	intersectAndClip (osg::Vec3d &s, 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
LineSegmentIntersector *	_parent
osg::Vec3d	_start
osg::Vec3d	_end
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

Detailed Description

Concrete class for implementing line intersections with the scene graph. To be used in conjunction with IntersectionVisitor.

Member Typedef Documentation

Intersections

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

Constructor & Destructor Documentation

LineSegmentIntersector() [1/3]

osgUtil::LineSegmentIntersector::LineSegmentIntersector	(	const osg::Vec3d &	start,
		const osg::Vec3d &	end )

Construct a LineSegmentIntersector that runs between the specified start and end points in MODEL coordinates.

Referenced by LineSegmentIntersector().

LineSegmentIntersector() [2/3]

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

Construct a LineSegmentIntersector that runs between the specified start and end points in the specified coordinate frame.

References LineSegmentIntersector(), osgUtil::Intersector::NO_LIMIT, and NULL.

LineSegmentIntersector() [3/3]

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

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

Member Function Documentation

clone()

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

virtual

Implements osgUtil::Intersector.

References osgUtil::Intersector::Intersector().

containsIntersections()

virtual bool osgUtil::LineSegmentIntersector::containsIntersections ( )

inlinevirtual

Implements osgUtil::Intersector.

References getIntersections().

enter()

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

virtual

Implements osgUtil::Intersector.

getEnd()

const osg::Vec3d & osgUtil::LineSegmentIntersector::getEnd ( ) const

inline

References _end.

getFirstIntersection()

Intersection osgUtil::LineSegmentIntersector::getFirstIntersection ( )

inline

References getIntersections().

getIntersections()

Intersections & osgUtil::LineSegmentIntersector::getIntersections ( )

inline

References _intersections, and _parent.

Referenced by containsIntersections(), getFirstIntersection(), and insertIntersection().

getStart()

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

inline

References _start.

getTransformation()

osg::Matrix osgUtil::LineSegmentIntersector::getTransformation ( osgUtil::IntersectionVisitor & iv, CoordinateFrame cf )

static

Compute the matrix that transforms the local coordinate system of parent Intersector (usually the current intersector) into the child coordinate system of the child Intersector. cf parameter indicates the coordinate frame of parent Intersector.

insertIntersection()

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

inline

References getIntersections().

intersect() [1/2]

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

virtual

Implements osgUtil::Intersector.

intersect() [2/2]

virtual void osgUtil::LineSegmentIntersector::intersect ( osgUtil::IntersectionVisitor & iv, osg::Drawable * drawable, const osg::Vec3d & s, const osg::Vec3d & e )

virtual

intersectAndClip()

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

protected

intersects()

bool osgUtil::LineSegmentIntersector::intersects ( const osg::BoundingSphere & bs )

protected

leave()

virtual void osgUtil::LineSegmentIntersector::leave ( )

virtual

Implements osgUtil::Intersector.

reset()

virtual void osgUtil::LineSegmentIntersector::reset ( )

virtual

Reimplemented from osgUtil::Intersector.

setEnd()

void osgUtil::LineSegmentIntersector::setEnd ( const osg::Vec3d & end )

inline

References _end.

setStart()

void osgUtil::LineSegmentIntersector::setStart ( const osg::Vec3d & start )

inline

References _start.

Member Data Documentation

_end

osg::Vec3d osgUtil::LineSegmentIntersector::_end

protected

Referenced by getEnd(), and setEnd().

_intersections

Intersections osgUtil::LineSegmentIntersector::_intersections

protected

Referenced by getIntersections().

_parent

LineSegmentIntersector* osgUtil::LineSegmentIntersector::_parent

protected

Referenced by getIntersections().

_start

osg::Vec3d osgUtil::LineSegmentIntersector::_start

protected

Referenced by getStart(), and setStart().

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

• LineSegmentIntersector