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osgUtil::RayIntersector Class Reference

#include <RayIntersector>

Inheritance diagram for osgUtil::RayIntersector:
osgUtil::Intersector osg::Referenced

Classes

struct  Intersection
 

Public Types

typedef std::multiset< IntersectionIntersections
 
- 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)
 
IntersectionsgetIntersections ()
 
Intersection getFirstIntersection ()
 
virtual void setStart (const osg::Vec3d &start)
 
const osg::Vec3dgetStart () const
 
virtual void setDirection (const osg::Vec3d &dir)
 
const osg::Vec3dgetDirection () const
 
virtual Intersectorclone (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 &)
 
Referencedoperator= (const Referenced &)
 
virtual void setThreadSafeRefUnref (bool)
 
bool getThreadSafeRefUnref () const
 
OpenThreads::MutexgetRefMutex () const
 
int ref () const
 
int unref () const
 
int unref_nodelete () const
 
int referenceCount () const
 
ObserverSetgetObserverSet () const
 
ObserverSetgetOrCreateObserverSet () 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::MutexgetGlobalReferencedMutex ()
 
static void setDeleteHandler (DeleteHandler *handler)
 
static DeleteHandlergetDeleteHandler ()
 

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.

Member Typedef Documentation

◆ Intersections

Constructor & Destructor Documentation

◆ RayIntersector() [1/4]

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().

◆ RayIntersector() [2/4]

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.

◆ RayIntersector() [3/4]

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.

◆ RayIntersector() [4/4]

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

◆ clone()

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

Implements osgUtil::Intersector.

◆ containsIntersections()

virtual bool osgUtil::RayIntersector::containsIntersections ( )
inlinevirtual

Implements osgUtil::Intersector.

◆ enter()

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

Implements osgUtil::Intersector.

◆ getDirection()

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

◆ getFirstIntersection()

Intersection osgUtil::RayIntersector::getFirstIntersection ( )
inline

◆ getIntersections()

Intersections & osgUtil::RayIntersector::getIntersections ( )
inline

◆ getStart()

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

◆ insertIntersection()

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

◆ intersect()

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

Implements osgUtil::Intersector.

◆ intersectAndClip()

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

◆ intersects()

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

◆ leave()

virtual void osgUtil::RayIntersector::leave ( )
virtual

Implements osgUtil::Intersector.

◆ reset()

virtual void osgUtil::RayIntersector::reset ( )
virtual

Reimplemented from osgUtil::Intersector.

◆ setDirection()

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

◆ setStart()

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

Member Data Documentation

◆ _direction

osg::Vec3d osgUtil::RayIntersector::_direction
protected

◆ _intersections

Intersections osgUtil::RayIntersector::_intersections
protected

◆ _parent

RayIntersector* osgUtil::RayIntersector::_parent
protected

◆ _start

osg::Vec3d osgUtil::RayIntersector::_start
protected

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