A Hierarchical paged LOD is a paged LOD which pages in a single file when the cull visitor is with-in a certain distance. It will also display child nodes if they are loaded.

Inheritance diagram for makVrv::DtHierarchicalPagedLod:

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Classes
class	PagedFileRoot

Public Types
typedef boost::unordered_map < DtUniqueID, DtSceneObject * >	SceneObjectMap

Public Member Functions
	DtHierarchicalPagedLod (DtDe &de, const std::string &filename, float distanceNear, float distanceFar, float tileRadius, float childTileRadius, const osg::Vec3d &fileCenter, const osg::Vec3d &childrenCenter, bool sparseChildren, bool substitutiveChildren, const osg::Matrixd &fileTranslation, osgDB::Options options, osg::Node parentMetaflightGroup)

virtual	~DtHierarchicalPagedLod ()

virtual const char *	className () const

void	addChildHierarchy (DtHierarchicalPagedLod *child)

virtual void	traverse (osg::NodeVisitor &nv)

virtual void	traverseAll (osg::NodeVisitor &nv)

virtual void	traverseActive (osg::NodeVisitor &nv)

virtual void	cullActive (osg::NodeVisitor &nv)

void	cullActive2D (DtOsgCullVisitor &nv)

void	cullActive3D (osg::NodeVisitor &nv)

virtual osg::BoundingSphere	computeBound () const

virtual void	traverseFile (osg::NodeVisitor &nv, float distance)

virtual void	traverseChildren (osg::NodeVisitor &nv)

virtual bool	fileInRange (float distance) const

virtual float	fileRangeDistance (osg::NodeVisitor &nv) const

virtual float	childRangeDistance (osg::NodeVisitor &nv) const

void	pageInFile (osg::NodeVisitor &nv, float distance)

void	pageOutFile (int lastCullTime, osg::NodeList &toRemove)

bool	fileNotLoaded () const

bool	fileIsPaging () const

bool	fileIsLoaded () const

virtual bool	fileInChildRange (float distance) const

void	pageInChildren (osg::NodeVisitor &nv, float distance)

void	pageOutChildren (int lastCullTime, osg::NodeList &toRemove)

bool	childrenLoaded () const

osg::ref_ptr< osg::Node >	fileNode () const

osg::ref_ptr< osg::Node >	rootNode () const

virtual bool	addPagedInChild (Node *child)

int	getNumChildrenPagedIn ()

void	increaseCountUpToParents ()

void	decreaseCountUpToParents (int amount)

virtual void	adjustLOD (Node *child)

float	fileRangeCullDistance2D (DtOsgCullVisitor &nv)

bool	fileInRange2D (float distance, float cull)

float	childRangeCullDistance2D (DtOsgCullVisitor &nv)

bool	fileInChildRange2D (float cull, float lod)

void	setThreadSafeRefUnref (bool threadSafe)

virtual void	resizeGLObjectBuffers (unsigned int maxSize)

virtual void	releaseGLObjects (osg::State *state) const

virtual std::string	fileName () const

virtual const std::vector < osg::ref_ptr < DtHierarchicalPagedLod > > &	children () const

virtual const osg::Matrix &	fileTranslation () const

float	getTileRadius ()

Public Member Functions inherited from makVrv::DtFastGroup
	META_Node (vrvOsg, DtFastGroup)

	DtFastGroup ()

	DtFastGroup (const DtFastGroup &, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)

virtual bool	removeChildren (unsigned int pos, unsigned int numChildrenToRemove)

Public Attributes
boost::signalslib::signal < void(osg::Group page, osg::Node child)>	signal_childPagedIn

boost::signalslib::signal < void(osg::Group page, osg::Node child)>	signal_childAboutToPageOut

Protected Types
enum	FileState { NotLoaded = 0, Paging, Loaded }

Protected Attributes
osg::Vec3d	myFileCenter

osg::Vec3d	myChildrenCenter

const float	myRangeNear

const float	myRangeFar

const float	myTileRadius

const float	myChildTileRadius

const bool	myChildrenAreSparse

const bool	myChildrenAreSubstitutive

volatile int	myCullTracking

std::string	myFileName

FileState	myFileState

osg::ref_ptr< PagedFileRoot >	myFileRoot

std::vector< osg::ref_ptr < DtHierarchicalPagedLod > >	myChildren

osg::ref_ptr< osg::Referenced >	myPageRef

osg::ref_ptr< osgDB::Options >	myOptions

int	myPagedInCount

DtDe &	myDe

SceneObjectMap	mySceneObjs

osg::ref_ptr < DtOsgOcclusionQueryNode >	myOcclusionNode

Protected Attributes inherited from makVrv::DtFastGroup
int	myLastMaxNumberOfGraphicsContexts = -1

Member Typedef Documentation

typedef boost::unordered_map<DtUniqueID, DtSceneObject* > makVrv::DtHierarchicalPagedLod::SceneObjectMap

Member Enumeration Documentation

enum makVrv::DtHierarchicalPagedLod::FileState

protected

Enumerator
NotLoaded
Paging
Loaded

Constructor & Destructor Documentation

makVrv::DtHierarchicalPagedLod::DtHierarchicalPagedLod	(	DtDe &	de,
		const std::string &	filename,
		float	distanceNear,
		float	distanceFar,
		float	tileRadius,
		float	childTileRadius,
		const osg::Vec3d &	fileCenter,
		const osg::Vec3d &	childrenCenter,
		bool	sparseChildren,
		bool	substitutiveChildren,
		const osg::Matrixd &	fileTranslation,
		osgDB::Options *	options,
		osg::Node *	parentMetaflightGroup
	)

CTOR to create a paged LOD.

virtual makVrv::DtHierarchicalPagedLod::~DtHierarchicalPagedLod ( )

virtual

Destructor.

Member Function Documentation

virtual const char* makVrv::DtHierarchicalPagedLod::className ( ) const

inlinevirtual

void makVrv::DtHierarchicalPagedLod::addChildHierarchy ( DtHierarchicalPagedLod * child )

Add a child node. These children are not stored in the Group's child nodes but in a separate list.

Exceptions

DtInvalidInput if the child distance is greater than the parent distance.

virtual void makVrv::DtHierarchicalPagedLod::traverse ( osg::NodeVisitor & nv )

virtual

Traverse the LOD with a node visitor.

virtual void makVrv::DtHierarchicalPagedLod::traverseAll ( osg::NodeVisitor & nv )

virtual

Traversal of all children, called based on mode of visitor.

virtual void makVrv::DtHierarchicalPagedLod::traverseActive ( osg::NodeVisitor & nv )

virtual

Traversal of only active children,, called based on mode of visitor.

virtual void makVrv::DtHierarchicalPagedLod::cullActive ( osg::NodeVisitor & nv )

virtual

Traversal of active children by a cull visitor. The cull visitor is the only visitor to page in and out data.

void makVrv::DtHierarchicalPagedLod::cullActive2D ( DtOsgCullVisitor & nv )

Called by cullActive() to do 2D (ortho) culling.

void makVrv::DtHierarchicalPagedLod::cullActive3D ( osg::NodeVisitor & nv )

Called by cullActive() to do 3D (perspective) culling.

virtual osg::BoundingSphere makVrv::DtHierarchicalPagedLod::computeBound ( ) const

virtual

Compute a bound for the LOD.

virtual void makVrv::DtHierarchicalPagedLod::traverseFile	(	osg::NodeVisitor &	nv,
		float	distance
	)

virtual

Traverse the local file. This happens when children should not be traversed.

virtual void makVrv::DtHierarchicalPagedLod::traverseChildren ( osg::NodeVisitor & nv )

virtual

Traverse the children. This happens when children should not be traversed.

virtual bool makVrv::DtHierarchicalPagedLod::fileInRange ( float distance ) const

virtual

Check to see if the file should be visible.

virtual float makVrv::DtHierarchicalPagedLod::fileRangeDistance ( osg::NodeVisitor & nv ) const

virtual

Calculate the distances from the LOD to the node visitor.

virtual float makVrv::DtHierarchicalPagedLod::childRangeDistance ( osg::NodeVisitor & nv ) const

virtual

Calculate the distances from the LOD to the node visitor.

void makVrv::DtHierarchicalPagedLod::pageInFile	(	osg::NodeVisitor &	nv,
		float	distance
	)

Page in my file. The file may not be immediately loaded.

void makVrv::DtHierarchicalPagedLod::pageOutFile	(	int	lastCullTime,
		osg::NodeList &	toRemove
	)

Page out my file. The file will not be rendered any more but memory may not be immediately freed.

bool makVrv::DtHierarchicalPagedLod::fileNotLoaded ( ) const

The file has three states, not-loaded, paging, and loaded. Check to see if the file is not loaded.

bool makVrv::DtHierarchicalPagedLod::fileIsPaging ( ) const

Check to see if the file is paging in.

bool makVrv::DtHierarchicalPagedLod::fileIsLoaded ( ) const

Check to see if the file is loaded.

virtual bool makVrv::DtHierarchicalPagedLod::fileInChildRange ( float distance ) const

virtual

Check to see if any children could be visible.

void makVrv::DtHierarchicalPagedLod::pageInChildren	(	osg::NodeVisitor &	nv,
		float	distance
	)

Cause all children to page in their files.

void makVrv::DtHierarchicalPagedLod::pageOutChildren	(	int	lastCullTime,
		osg::NodeList &	toRemove
	)

Cause all children to page out their files.

bool makVrv::DtHierarchicalPagedLod::childrenLoaded ( ) const

Check to see if all children have loaded their files.

osg::ref_ptr<osg::Node> makVrv::DtHierarchicalPagedLod::fileNode ( ) const

Get the file node, this will be null if the file is not loaded or paging in.

osg::ref_ptr<osg::Node> makVrv::DtHierarchicalPagedLod::rootNode ( ) const

get the extra disowned child of the paged lod. It is either the myFileRoot or the occlusion node depending on if the occlusion node iss there.

virtual bool makVrv::DtHierarchicalPagedLod::addPagedInChild ( Node * child )

virtual

Called to add paged in child.

int makVrv::DtHierarchicalPagedLod::getNumChildrenPagedIn ( )

inline

If we page in tiles, increase the paged-in count with parents.

void makVrv::DtHierarchicalPagedLod::increaseCountUpToParents ( )

If we page in tiles, increase the paged-in count with parents.

void makVrv::DtHierarchicalPagedLod::decreaseCountUpToParents ( int amount )

If we page out tiles, decrease the paged-in count with the parents.

virtual void makVrv::DtHierarchicalPagedLod::adjustLOD ( Node * child )

virtual

Called to find and remove the first LOD.

float makVrv::DtHierarchicalPagedLod::fileRangeCullDistance2D ( DtOsgCullVisitor & nv )

Get a culling range based on a 2D projection.

bool makVrv::DtHierarchicalPagedLod::fileInRange2D	(	float	distance,
		float	cull
	)

Determine if the file is in cull range as well as LOD range.

float makVrv::DtHierarchicalPagedLod::childRangeCullDistance2D ( DtOsgCullVisitor & nv )

Get a culling range for the child center based on a 2D projection.

bool makVrv::DtHierarchicalPagedLod::fileInChildRange2D	(	float	cull,
		float	lod
	)

Determine if the children are in cull range as well as LOD range.

void makVrv::DtHierarchicalPagedLod::setThreadSafeRefUnref ( bool threadSafe )

Set whether to use a mutex to ensure ref() and unref() are thread safe.

virtual void makVrv::DtHierarchicalPagedLod::resizeGLObjectBuffers ( unsigned int maxSize )

virtual

Resize any per context GLObject buffers to specified size.

Reimplemented from makVrv::DtFastGroup.

virtual void makVrv::DtHierarchicalPagedLod::releaseGLObjects ( osg::State * state ) const

virtual

If State is non-zero, this function releases any associated OpenGL objects for the specified graphics context. Otherwise, releases OpenGL objects for all graphics contexts.

virtual std::string makVrv::DtHierarchicalPagedLod::fileName ( ) const

virtual

Returns: The name of the file which this node points to for loading.

virtual const std::vector<osg::ref_ptr<DtHierarchicalPagedLod> >& makVrv::DtHierarchicalPagedLod::children ( ) const

virtual

Returns: List of child DtHierarchicalPagedLod nodes of this node.

virtual const osg::Matrix& makVrv::DtHierarchicalPagedLod::fileTranslation ( ) const

virtual

Returns: The translation matrix for the file node, as it was passed in using the constructor.

float makVrv::DtHierarchicalPagedLod::getTileRadius ( )

inline

Get tile radius (has 20% padding so bounds are not too tight)

Member Data Documentation

boost::signalslib::signal<void(osg::Group* page, osg::Node* child)> makVrv::DtHierarchicalPagedLod::signal_childPagedIn

signal when a child of 'page' is paged in (i.e. added to the scenegraph) 'child' can be other pages or indeed any node type (e.g. a transform with a proxy node as a child whose data was just loaded). Interested clients can traverse the child to find out nodes of interest (child included) Note: The 'page' here is not the DtHierarchicalPagedLod, but a node that in essence represents the parent of contents/file data associated with the DtHierarchicalPagedLod node.

boost::signalslib::signal<void(osg::Group* page, osg::Node* child)> makVrv::DtHierarchicalPagedLod::signal_childAboutToPageOut

signal when a child is about to be paged out (i.e. data corresponding to it unloaded and the child removed from the scenegraph)

osg::Vec3d makVrv::DtHierarchicalPagedLod::myFileCenter

protected

osg::Vec3d makVrv::DtHierarchicalPagedLod::myChildrenCenter

protected

const float makVrv::DtHierarchicalPagedLod::myRangeNear

protected

const float makVrv::DtHierarchicalPagedLod::myRangeFar

protected

const float makVrv::DtHierarchicalPagedLod::myTileRadius

protected

const float makVrv::DtHierarchicalPagedLod::myChildTileRadius

protected

const bool makVrv::DtHierarchicalPagedLod::myChildrenAreSparse

protected

const bool makVrv::DtHierarchicalPagedLod::myChildrenAreSubstitutive

protected

volatile int makVrv::DtHierarchicalPagedLod::myCullTracking

protected

std::string makVrv::DtHierarchicalPagedLod::myFileName

protected

FileState makVrv::DtHierarchicalPagedLod::myFileState

protected

osg::ref_ptr<PagedFileRoot> makVrv::DtHierarchicalPagedLod::myFileRoot

protected

std::vector<osg::ref_ptr<DtHierarchicalPagedLod> > makVrv::DtHierarchicalPagedLod::myChildren

protected

osg::ref_ptr<osg::Referenced> makVrv::DtHierarchicalPagedLod::myPageRef

protected

osg::ref_ptr<osgDB::Options> makVrv::DtHierarchicalPagedLod::myOptions

protected

int makVrv::DtHierarchicalPagedLod::myPagedInCount

protected

DtDe& makVrv::DtHierarchicalPagedLod::myDe

protected

SceneObjectMap makVrv::DtHierarchicalPagedLod::mySceneObjs

protected

osg::ref_ptr<DtOsgOcclusionQueryNode> makVrv::DtHierarchicalPagedLod::myOcclusionNode

protected

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

/data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-0-branch/include/vrvOsg/DtHierarchicalPagedLod.h

Classes

Public Types

Public Member Functions

Public Attributes

Protected Types

Protected Attributes

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation