makVrv::DtOsgCullVisitor Class Reference

DtOsgCullVisitor will inspect the camera to see which visual mode is active. More...

Inheritance diagram for makVrv::DtOsgCullVisitor:

Public Member Functions
	DtOsgCullVisitor ()
	CTOR.
	DtOsgCullVisitor (const DtOsgCullVisitor &)
	Copy constructor.
void	initializeViewDependentSettings ()
	Virtual void.
bool	orthoCulling () const
	Query whether this visitor is doing orthographic culling.
bool	coordinateSystemChanged () const
	Query whether the coordinate system changed this frame (used to reset localToWorkd matrices)
virtual float	getDistanceToScreenEdge (const osg::Vec3 &vec) const
	Get a projected distance from the screen edge (approximate) when orthoCulling.
virtual float	altitude2D () const
	Same as getDistanceToViewPoint() when ortho culling.
const DtOsgCullVisitorParameters *	visitorParameters () const
	Get the cull visitor parameters.

Protected Member Functions
virtual void	apply (osg::Transform &node)
	check for scalable transform and scale as required
virtual void	apply (osg::Group &group)
	check for scalable group and scale bounding sphere as required
virtual float	getDistanceToViewPoint (const osg::Vec3 &vec, bool useLOD) const
	Gets the distance to the view point with the given visual mode.
virtual bool	isCulled (osg::Node &node, double scaleFactor)
	for nodes that need scaling, we call this instead of CullVisitor::isCulled
DtOsgCullVisitorParameters *	getVisitorParameters () const
	Fetches the info from the visitor's renderInfo object.
virtual osgUtil::CullVisitor *	clone () const
	Protected clone function.

Protected Attributes
DtOsgCullVisitorParameters *	myInfoCopy
double	myAltitude
double	myMaximumMagnificationAngle
osg::Matrix	myWorldToWindowMatrix

Detailed Description

DtOsgCullVisitor will inspect the camera to see which visual mode is active.

If the visual mode is a 2D display mode, it changes the way LODs are paged in by pixel size and zoom level, else uses a distance from eye-point check with no LOD scale

Constructor & Destructor Documentation

makVrv::DtOsgCullVisitor::DtOsgCullVisitor

(

)

CTOR.

makVrv::DtOsgCullVisitor::DtOsgCullVisitor

(

const DtOsgCullVisitor &

)

Copy constructor.

Member Function Documentation

void makVrv::DtOsgCullVisitor::initializeViewDependentSettings

(

)

Virtual void.

bool makVrv::DtOsgCullVisitor::orthoCulling

(

)

const

Query whether this visitor is doing orthographic culling.

bool makVrv::DtOsgCullVisitor::coordinateSystemChanged

(

)

const

Query whether the coordinate system changed this frame (used to reset localToWorkd matrices)

virtual float makVrv::DtOsgCullVisitor::getDistanceToScreenEdge ( const osg::Vec3 &  vec ) const

virtual

Get a projected distance from the screen edge (approximate) when orthoCulling.

virtual float makVrv::DtOsgCullVisitor::altitude2D ( ) const

virtual

Same as getDistanceToViewPoint() when ortho culling.

const DtOsgCullVisitorParameters* makVrv::DtOsgCullVisitor::visitorParameters

(

)

const

Get the cull visitor parameters.

virtual void makVrv::DtOsgCullVisitor::apply ( osg::Transform &  node )

protectedvirtual

check for scalable transform and scale as required

virtual void makVrv::DtOsgCullVisitor::apply ( osg::Group &  group )

protectedvirtual

check for scalable group and scale bounding sphere as required

virtual float makVrv::DtOsgCullVisitor::getDistanceToViewPoint ( const osg::Vec3 &  vec, bool  useLOD  ) const

protectedvirtual

Gets the distance to the view point with the given visual mode.

Will be used to page in LODs

virtual bool makVrv::DtOsgCullVisitor::isCulled ( osg::Node &  node, double  scaleFactor  )

protectedvirtual

for nodes that need scaling, we call this instead of CullVisitor::isCulled

DtOsgCullVisitorParameters* makVrv::DtOsgCullVisitor::getVisitorParameters ( ) const

protected

Fetches the info from the visitor's renderInfo object.

virtual osgUtil::CullVisitor* makVrv::DtOsgCullVisitor::clone ( ) const

protectedvirtual

Protected clone function.

Member Data Documentation

DtOsgCullVisitorParameters* makVrv::DtOsgCullVisitor::myInfoCopy

protected

double makVrv::DtOsgCullVisitor::myAltitude

protected

double makVrv::DtOsgCullVisitor::myMaximumMagnificationAngle

protected

osg::Matrix makVrv::DtOsgCullVisitor::myWorldToWindowMatrix

protected

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

• include/vrvOsg/DtOsgCullVisitor.h