OpenSceneGraph  3.4.0
Classes | Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes
osgUtil::LineSegmentIntersector Class Reference

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

Inheritance diagram for osgUtil::LineSegmentIntersector:
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List of all members.

Classes

struct  Intersection

Public Types

typedef std::multiset
< Intersection
Intersections

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.
 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 (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).
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 ()

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.

Protected Member Functions

bool intersects (const osg::BoundingSphere &bs)
bool intersectAndClip (osg::Vec3d &s, osg::Vec3d &e, const osg::BoundingBox &bb)

Protected Attributes

LineSegmentIntersector_parent
osg::Vec3d _start
osg::Vec3d _end
Intersections _intersections

Detailed Description

Concrete class for implementing line intersections with the scene graph.

To be used in conjunction with IntersectionVisitor.


Member Typedef Documentation


Constructor & Destructor Documentation

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

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

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

Implements osgUtil::Intersector.

virtual bool osgUtil::LineSegmentIntersector::containsIntersections ( ) [inline, virtual]

Implements osgUtil::Intersector.

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

Implements osgUtil::Intersector.

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.

void osgUtil::LineSegmentIntersector::insertIntersection ( const Intersection intersection) [inline]

Implements osgUtil::Intersector.

virtual void osgUtil::LineSegmentIntersector::intersect ( osgUtil::IntersectionVisitor iv,
osg::Drawable drawable,
const osg::Vec3d s,
const osg::Vec3d e 
) [virtual]
virtual void osgUtil::LineSegmentIntersector::leave ( ) [virtual]

Implements osgUtil::Intersector.

virtual void osgUtil::LineSegmentIntersector::reset ( ) [virtual]

Reimplemented from osgUtil::Intersector.

void osgUtil::LineSegmentIntersector::setEnd ( const osg::Vec3d end) [inline]
void osgUtil::LineSegmentIntersector::setStart ( const osg::Vec3d start) [inline]

Member Data Documentation


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

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Generated at Tue Dec 8 2015 00:14:31 for the OpenSceneGraph by doxygen 1.7.6.1.