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osgUtil::IntersectVisitor Class Reference

Inheritance diagram for osgUtil::IntersectVisitor:

osg::NodeVisitor osg::Referenced List of all members.

Public Types

typedef std::vector< HitHitList
typedef std::map< const osg::LineSegment *,
HitList
LineSegmentHitListMap
enum  LODSelectionMode { USE_HEIGHEST_LEVEL_OF_DETAIL, USE_SEGMENT_START_POINT_AS_EYE_POINT_FOR_LOD_LEVEL_SELECTION }

Public Member Functions

 IntersectVisitor ()
virtual ~IntersectVisitor ()
void reset ()
void addLineSegment (osg::LineSegment *seg)
HitListgetHitList (const osg::LineSegment *seg)
int getNumHits (const osg::LineSegment *seg)
bool hits ()
void setLODSelectionMode (LODSelectionMode mode)
LODSelectionMode getLODSelectionMode () const
void setEyePoint (const osg::Vec3 &eye)
virtual osg::Vec3 getEyePoint () const
virtual float getDistanceToEyePoint (const osg::Vec3 &pos, bool withLODScale) const
virtual void apply (osg::Node &)
virtual void apply (osg::Geode &node)
virtual void apply (osg::Billboard &node)
virtual void apply (osg::Group &node)
virtual void apply (osg::Transform &node)
virtual void apply (osg::Switch &node)
virtual void apply (osg::LOD &node)

Protected Types

typedef std::vector< osg::ref_ptr<
IntersectState > > 
IntersectStateStack

Protected Member Functions

bool intersect (osg::Drawable &gset)
void pushMatrix (const osg::Matrix &matrix)
void popMatrix ()
bool enterNode (osg::Node &node)
void leaveNode ()

Protected Attributes

IntersectStateStack _intersectStateStack
LineSegmentHitListMap _segHitList
LODSelectionMode _lodSelectionMode
osg::Vec3 _pseudoEyePoint

Classes

class  IntersectState

Detailed Description

Basic visitor for ray based collisions of a scene.


Member Typedef Documentation

typedef std::vector<Hit> osgUtil::IntersectVisitor::HitList
 

typedef std::vector<osg::ref_ptr<IntersectState> > osgUtil::IntersectVisitor::IntersectStateStack [protected]
 

typedef std::map<const osg::LineSegment*,HitList > osgUtil::IntersectVisitor::LineSegmentHitListMap
 


Member Enumeration Documentation

enum osgUtil::IntersectVisitor::LODSelectionMode
 

Enumerator:
USE_HEIGHEST_LEVEL_OF_DETAIL 
USE_SEGMENT_START_POINT_AS_EYE_POINT_FOR_LOD_LEVEL_SELECTION 


Constructor & Destructor Documentation

osgUtil::IntersectVisitor::IntersectVisitor  ) 
 

virtual osgUtil::IntersectVisitor::~IntersectVisitor  )  [virtual]
 


Member Function Documentation

void osgUtil::IntersectVisitor::addLineSegment osg::LineSegment seg  ) 
 

Add a line segment to use for intersection testing during scene traversal.

virtual void osgUtil::IntersectVisitor::apply osg::LOD node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::IntersectVisitor::apply osg::Switch node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::IntersectVisitor::apply osg::Transform node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::IntersectVisitor::apply osg::Group node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::IntersectVisitor::apply osg::Billboard node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::IntersectVisitor::apply osg::Geode node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

virtual void osgUtil::IntersectVisitor::apply osg::Node  )  [virtual]
 

Reimplemented from osg::NodeVisitor.

bool osgUtil::IntersectVisitor::enterNode osg::Node node  )  [protected]
 

virtual float osgUtil::IntersectVisitor::getDistanceToEyePoint const osg::Vec3 pos,
bool  withLODScale
const [virtual]
 

Get the distance from a point to the eye point, distance value in local coordinate system. This is calculated using the pseudo-EyePoint (above) when doing LOD calculcations.

Reimplemented from osg::NodeVisitor.

virtual osg::Vec3 osgUtil::IntersectVisitor::getEyePoint  )  const [inline, virtual]
 

Get the eye point in local coordinates. Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement.

Reimplemented from osg::NodeVisitor.

HitList& osgUtil::IntersectVisitor::getHitList const osg::LineSegment seg  )  [inline]
 

LODSelectionMode osgUtil::IntersectVisitor::getLODSelectionMode  )  const [inline]
 

int osgUtil::IntersectVisitor::getNumHits const osg::LineSegment seg  )  [inline]
 

bool osgUtil::IntersectVisitor::hits  ) 
 

bool osgUtil::IntersectVisitor::intersect osg::Drawable gset  )  [protected]
 

void osgUtil::IntersectVisitor::leaveNode  )  [protected]
 

void osgUtil::IntersectVisitor::popMatrix  )  [protected]
 

void osgUtil::IntersectVisitor::pushMatrix const osg::Matrix matrix  )  [protected]
 

void osgUtil::IntersectVisitor::reset  )  [virtual]
 

Method to call to reset visitor. Useful if your visitor accumulates state during a traversal, and you plan to reuse the visitor. To flush that state for the next traversal: call reset() prior to each traversal.

Reimplemented from osg::NodeVisitor.

void osgUtil::IntersectVisitor::setEyePoint const osg::Vec3 eye  )  [inline]
 

Set the eye point in local coordinates. This is a pseudo-EyePoint for billboarding and LOD purposes. It is copied from the Start point of the most-recently-added segment of the intersection ray set (IntersectState::_segList).

void osgUtil::IntersectVisitor::setLODSelectionMode LODSelectionMode  mode  )  [inline]
 


Member Data Documentation

IntersectStateStack osgUtil::IntersectVisitor::_intersectStateStack [protected]
 

LODSelectionMode osgUtil::IntersectVisitor::_lodSelectionMode [protected]
 

osg::Vec3 osgUtil::IntersectVisitor::_pseudoEyePoint [protected]
 

LineSegmentHitListMap osgUtil::IntersectVisitor::_segHitList [protected]
 


The documentation for this class was generated from the following file:
Generated on Wed Jun 7 05:04:40 2006 for OpenSceneGraph by  doxygen 1.4.4