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osgUtil::LineSegmentIntersector Class Reference

Concrete class for implementing line intersections with the scene graph. More...

Inheritance diagram for osgUtil::LineSegmentIntersector:
Inheritance graph
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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 }
 Hint to precision used in the internal intersections calculations. More...
 

Public Member Functions

 LineSegmentIntersector (const osg::Vec3d &start, const osg::Vec3d &end)
 Construct a LineSegmentIntersector that runs between the specified start and end points in MODEL coordinates. More...
 
 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. More...
 
 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). More...
 
void insertIntersection (const Intersection &intersection)
 
IntersectionsgetIntersections ()
 
Intersection getFirstIntersection ()
 
void setStart (const osg::Vec3d &start)
 
const osg::Vec3dgetStart () const
 
void setEnd (const osg::Vec3d &end)
 
const osg::Vec3dgetEnd () 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 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)
 Set the hint to what precision to use in the intersections calculations. More...
 
PrecisionHint getPrecisionHint () const
 Get the hint to what precision should be used in the intersections calculations. More...
 
- Public Member Functions inherited from osg::Referenced
 Referenced ()
 
 Referenced (bool threadSafeRefUnref)
 Deprecated, Referenced is now always uses thread safe ref/unref, use default Referenced() constructor instead. More...
 
 Referenced (const Referenced &)
 
Referencedoperator= (const Referenced &)
 
virtual void setThreadSafeRefUnref (bool)
 Deprecated, Referenced is always theadsafe so there method now has no effect and does not need to be called. More...
 
bool getThreadSafeRefUnref () const
 Get whether a mutex is used to ensure ref() and unref() are thread safe. More...
 
OpenThreads::MutexgetRefMutex () const
 Get the mutex used to ensure thread safety of ref()/unref(). More...
 
int ref () const
 Increment the reference count by one, indicating that this object has another pointer which is referencing it. More...
 
int unref () const
 Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...
 
int unref_nodelete () const
 Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...
 
int referenceCount () const
 Return the number of pointers currently referencing this object. More...
 
ObserverSetgetObserverSet () const
 Get the ObserverSet if one is attached, otherwise return NULL. More...
 
ObserverSetgetOrCreateObserverSet () const
 Get the ObserverSet if one is attached, otherwise create an ObserverSet, attach it, then return this newly created ObserverSet. More...
 
void addObserver (Observer *observer) const
 Add a Observer that is observing this object, notify the Observer when this object gets deleted. More...
 
void removeObserver (Observer *observer) const
 Remove Observer that is observing this object. More...
 

Static Public Member Functions

static osg::Matrix getTransformation (osgUtil::IntersectionVisitor &iv, CoordinateFrame cf)
 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. More...
 
- Static Public Member Functions inherited from osg::Referenced
static OpenThreads::MutexgetGlobalReferencedMutex ()
 Get the optional global Referenced mutex, this can be shared between all osg::Referenced. More...
 
static void setDeleteHandler (DeleteHandler *handler)
 Set a DeleteHandler to which deletion of all referenced counted objects will be delegated. More...
 
static DeleteHandlergetDeleteHandler ()
 Get a DeleteHandler. More...
 

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

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.

◆ 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.

◆ 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.

◆ containsIntersections()

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

Implements osgUtil::Intersector.

◆ enter()

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

Implements osgUtil::Intersector.

◆ getEnd()

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

References osg::clone().

◆ getFirstIntersection()

Intersection osgUtil::LineSegmentIntersector::getFirstIntersection ( )
inline

◆ getIntersections()

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

◆ getStart()

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

◆ getTransformation()

static 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

◆ 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

◆ setStart()

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

Member Data Documentation

◆ _end

osg::Vec3d osgUtil::LineSegmentIntersector::_end
protected

◆ _intersections

Intersections osgUtil::LineSegmentIntersector::_intersections
protected

◆ _parent

LineSegmentIntersector* osgUtil::LineSegmentIntersector::_parent
protected

◆ _start

osg::Vec3d osgUtil::LineSegmentIntersector::_start
protected

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