osgUtil::PolytopeIntersector Class Reference

#include <PolytopeIntersector>

Inheritance diagram for osgUtil::PolytopeIntersector:

Classes
struct	Intersection

Public Types
enum	{ POINT_PRIMITIVES = (1<<0) , LINE_PRIMITIVES = (1<<1) , TRIANGLE_PRIMITIVES = (1<<2) , ALL_PRIMITIVES = ( POINT_PRIMITIVES | LINE_PRIMITIVES | TRIANGLE_PRIMITIVES ) }
	dimension enum to specify primitive types to check. More...
typedef osg::Plane::Vec3_type	Vec3_type
typedef std::set< 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
	PolytopeIntersector (const osg::Polytope &polytope)
	PolytopeIntersector (CoordinateFrame cf, const osg::Polytope &polytope)
	PolytopeIntersector (CoordinateFrame cf, double xMin, double yMin, double xMax, double yMax)
osg::Polytope &	getPolytope ()
const osg::Polytope &	getPolytope () const
void	insertIntersection (const Intersection &intersection)
Intersections &	getIntersections ()
Intersection	getFirstIntersection ()
void	setPrimitiveMask (unsigned int mask)
unsigned int	getPrimitiveMask () const
void	setReferencePlane (const osg::Plane &plane)
const osg::Plane &	getReferencePlane () 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)
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
PolytopeIntersector *	_parent
osg::Polytope	_polytope
unsigned int	_primitiveMask
	mask which dimensions should be checked
osg::Plane	_referencePlane
	plane to use for sorting intersections
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	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

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

Member Typedef Documentation

Intersections

typedef std::set<Intersection> osgUtil::PolytopeIntersector::Intersections

Vec3_type

typedef osg::Plane::Vec3_type osgUtil::PolytopeIntersector::Vec3_type

Member Enumeration Documentation

anonymous enum

anonymous enum

dimension enum to specify primitive types to check.

Enumerator
POINT_PRIMITIVES
LINE_PRIMITIVES	check for points
TRIANGLE_PRIMITIVES	check for lines
ALL_PRIMITIVES	check for triangles and other primitives like quad, polygons that can be decomposed into triangles

Constructor & Destructor Documentation

PolytopeIntersector() [1/3]

osgUtil::PolytopeIntersector::PolytopeIntersector

(

const osg::Polytope &

polytope

)

Construct a PolytopeIntersector using specified polytope in MODEL coordinates.

PolytopeIntersector() [2/3]

osgUtil::PolytopeIntersector::PolytopeIntersector	(	CoordinateFrame	cf,
		const osg::Polytope &	polytope )

Construct a PolytopeIntersector using specified polytope in specified coordinate frame.

PolytopeIntersector() [3/3]

osgUtil::PolytopeIntersector::PolytopeIntersector	(	CoordinateFrame	cf,
		double	xMin,
		double	yMin,
		double	xMax,
		double	yMax )

Convenience constructor for supporting picking in WINDOW, or PROJECTION coordinates In WINDOW coordinates (clip space cube) creates a five sided polytope box that has a front face at 0.0 and sides around box xMin, yMin, xMax, yMax. In PROJECTION coordinates (clip space cube) creates a five sided polytope box that has a front face at -1 and sides around box xMin, yMin, xMax, yMax. In VIEW and MODEL coordinates (clip space cube) creates a five sided polytope box that has a front face at 0.0 and sides around box xMin, yMin, xMax, yMax.

Member Function Documentation

clone()

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

virtual

Implements osgUtil::Intersector.

References osgUtil::Intersector::Intersector().

containsIntersections()

virtual bool osgUtil::PolytopeIntersector::containsIntersections ( )

inlinevirtual

Implements osgUtil::Intersector.

References getIntersections().

enter()

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

virtual

Implements osgUtil::Intersector.

getFirstIntersection()

Intersection osgUtil::PolytopeIntersector::getFirstIntersection ( )

inline

References getIntersections().

getIntersections()

Intersections & osgUtil::PolytopeIntersector::getIntersections ( )

inline

References _intersections, and _parent.

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

getPolytope() [1/2]

osg::Polytope & osgUtil::PolytopeIntersector::getPolytope ( )

inline

Get the Polytope used by the intersector.

References _polytope.

getPolytope() [2/2]

const osg::Polytope & osgUtil::PolytopeIntersector::getPolytope ( ) const

inline

Get the const Polytope used by the intersector.

References _polytope.

getPrimitiveMask()

unsigned int osgUtil::PolytopeIntersector::getPrimitiveMask ( ) const

inline

Get which Primitives should be tested for intersections.

References _primitiveMask.

getReferencePlane()

const osg::Plane & osgUtil::PolytopeIntersector::getReferencePlane ( ) const

inline

References _referencePlane.

insertIntersection()

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

inline

References getIntersections().

intersect()

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

virtual

Implements osgUtil::Intersector.

leave()

virtual void osgUtil::PolytopeIntersector::leave ( )

virtual

Implements osgUtil::Intersector.

reset()

virtual void osgUtil::PolytopeIntersector::reset ( )

virtual

Reimplemented from osgUtil::Intersector.

setPrimitiveMask()

void osgUtil::PolytopeIntersector::setPrimitiveMask ( unsigned int mask )

inline

Set which Primitives should be tested for intersections.

References _primitiveMask.

setReferencePlane()

void osgUtil::PolytopeIntersector::setReferencePlane ( const osg::Plane & plane )

inline

set the plane used to sort the intersections. The intersections are sorted by the distance of the localIntersectionPoint and the reference plane. The default for the reference plane is the last plane of the polytope.

References _referencePlane.

Member Data Documentation

_intersections

Intersections osgUtil::PolytopeIntersector::_intersections

protected

Referenced by getIntersections().

_parent

PolytopeIntersector* osgUtil::PolytopeIntersector::_parent

protected

Referenced by getIntersections().

_polytope

osg::Polytope osgUtil::PolytopeIntersector::_polytope

protected

Referenced by getPolytope(), and getPolytope().

_primitiveMask

unsigned int osgUtil::PolytopeIntersector::_primitiveMask

protected

mask which dimensions should be checked

Referenced by getPrimitiveMask(), and setPrimitiveMask().

_referencePlane

osg::Plane osgUtil::PolytopeIntersector::_referencePlane

protected

plane to use for sorting intersections

Referenced by getReferencePlane(), and setReferencePlane().

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

• PolytopeIntersector