osgSim::VisibilityGroup Class Reference

Inheritance diagram for osgSim::VisibilityGroup:


Public Member Functions
	VisibilityGroup ()
	VisibilityGroup (const VisibilityGroup &, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
	META_Node (osgSim, VisibilityGroup)
virtual void	traverse (osg::NodeVisitor &nv)
void	setVisibilityVolume (osg::Node *node)
osg::Node *	getVisibilityVolume ()
const osg::Node *	getVisibilityVolume () const
void	setVolumeIntersectionMask (osg::Node::NodeMask mask)
osg::Node::NodeMask	getVolumeIntersectionMask () const
void	setSegmentLength (float length)
float	getSegmentLength () const
Protected Member Functions
virtual	~VisibilityGroup ()
Protected Attributes
osg::ref_ptr< osg::Node >	_visibilityVolume
osg::Node::NodeMask	_volumeIntersectionMask
float	_segmentLength

Detailed Description

VisibilityGroup renders (traverses) it's children only when the camera is inside a specified visibility volume. The visibility volume is intersected with a line segment that extends from the current camera's eye-point along the view vector for a given segment length. If an intersection is detected then the node's children are traversed.

Constructor & Destructor Documentation

osgSim::VisibilityGroup::VisibilityGroup ( )

osgSim::VisibilityGroup::VisibilityGroup	(	const VisibilityGroup &	,
		const osg::CopyOp &	copyop = `osg::CopyOp::SHALLOW_COPY`
	)

Copy constructor using CopyOp to manage deep vs shallow copy.

virtual osgSim::VisibilityGroup::~VisibilityGroup ( ) [inline, protected, virtual]

Member Function Documentation

float osgSim::VisibilityGroup::getSegmentLength ( ) const [inline]

Get the length of the intersection segment.

const osg::Node* osgSim::VisibilityGroup::getVisibilityVolume ( ) const [inline]

Get the const subgraph that is intersected for the visibility determination.

osg::Node* osgSim::VisibilityGroup::getVisibilityVolume ( ) [inline]

Get the subgraph that is intersected for the visibility determination.

osg::Node::NodeMask osgSim::VisibilityGroup::getVolumeIntersectionMask ( ) const [inline]

Get the traversal mask for the intersection testing.

osgSim::VisibilityGroup::META_Node	(	osgSim	,
		VisibilityGroup
	)

void osgSim::VisibilityGroup::setSegmentLength ( float length ) [inline]

Set the length of the intersection segment. The segments extends this many database units from the camera eye-point along the look vector. If this is left at zero then the diameter of the bounding sphere of the visibility volume is used.

void osgSim::VisibilityGroup::setVisibilityVolume ( osg::Node * node ) [inline]

Set the subgraph that is intersected for the visibility determination.

void osgSim::VisibilityGroup::setVolumeIntersectionMask ( osg::Node::NodeMask mask ) [inline]

Set the traversal mask for the intersection testing.

virtual void osgSim::VisibilityGroup::traverse ( osg::NodeVisitor & nv ) [virtual]

Traverse downwards : calls children's accept method with NodeVisitor.

Reimplemented from osg::Group.