DtPagedLodTerrainSourcePager Class Reference

A DtPagedLodTerrainSourcePager pages in data from a specific terrain patch. More...

Inheritance diagram for DtPagedLodTerrainSourcePager:

Classes
class	DtActivePageVisitor
	Visitor class used to find the active paged of a OSG scene graph. More...

Public Member Functions
	DtPagedLodTerrainSourcePager (DtVantageTerrainEngine *terrainEngine, osg::Group *rootNode, const DtFilename &surfaceCharacterMap)
virtual	~DtPagedLodTerrainSourcePager ()
virtual DtTerrainSourceTracker *	createTerrainSourceTracker ()
	Creates and returns a DtOsgTerrainSourceTracker.
virtual bool	pageInGeometry (const DtTerrainPagingGeometryPtr geometry, const unsigned int intersectId=0)
	This function must page in all the geometry specified by the argument, and return true when successful.
virtual bool	pageOutNodes (std::list< DtNodeId > &nodesToRemove)
	This function must cause the page out of the nodeIds specified.
virtual void	updateTerrain (const unsigned int intersectId=0)
virtual void	updatePageTracker (const unsigned int intersectId=0)
	Updates the DtOsgTerrainSourceTracker.
Public Member Functions inherited from DtBoundingVolumeTerrainSourcePager
	DtBoundingVolumeTerrainSourcePager (DtVantageTerrainEngine *terrainEngine)
virtual	~DtBoundingVolumeTerrainSourcePager ()
Public Member Functions inherited from DtTerrainSourcePager
	DtTerrainSourcePager (DtVantageTerrainEngine *terrainEngine)
	Constructor.
virtual	~DtTerrainSourcePager ()
	Destructor. Deletes all pending commands and myTerrainSourceTracker.
virtual void	tick ()
	Processes commands from the priority-sorted command map.
virtual DtTerrainSourceTracker *	terrainSourceTracker ()
	Accessor for myTerrainSourceTracker.
virtual int	highestPriorityPendingWork ()
	Calls processCommandQueue to add new commands into the priority-sorted command map.
virtual void	processCommandQueue ()
	Takes incoming commands off the command queue and adds them to the priority-sorted command map.
virtual void	setCurrentTime (const double &currentTime)
	Sets myCurrentTime for purposes of expiring old page-in commands.

Static Public Member Functions
static DtTerrainSourcePager *	terrainChooserFunction (osg::Node &node, DtVantageTerrainEngine *terrainEngine, const DtFilename &surfaceCharacterMap)
	This is the function that is registered with the DtTerrainSourceChooser.

Protected Member Functions
osg::Node *	terrainRoot ()
	The root node that this pager is operating on.
virtual bool	pageInData (DtPageInVisitor &visitor)

Static Protected Member Functions
static DtNodeId	osgNodeId (osg::Node *node)
	Methods for converting to/from DtNodeId.
static osg::Node *	nodeFromId (DtNodeId nodeId)
	Methods for converting to/from DtNodeId.

Protected Attributes
osg::Node *	myRootNode
	The node on which this pager operates.
bool	myForceUpdate
	Used to force update terrain when data has been paged out.
DtFilename	mySurfaceCharacterMap

Detailed Description

A DtPagedLodTerrainSourcePager pages in data from a specific terrain patch.

DtPagedLodTerrainSourcePager is a derived terrainSourcePager that handles a source such as paged ive.

Constructor & Destructor Documentation

DtPagedLodTerrainSourcePager::DtPagedLodTerrainSourcePager	(	DtVantageTerrainEngine *	terrainEngine,
		osg::Group *	rootNode,
		const DtFilename &	surfaceCharacterMap
	)

virtual DtPagedLodTerrainSourcePager::~DtPagedLodTerrainSourcePager ( )

virtual

Member Function Documentation

virtual DtTerrainSourceTracker* DtPagedLodTerrainSourcePager::createTerrainSourceTracker ( )

virtual

Creates and returns a DtOsgTerrainSourceTracker.

Implements DtTerrainSourcePager.

virtual bool DtPagedLodTerrainSourcePager::pageInGeometry ( const DtTerrainPagingGeometryPtr  geometry, const unsigned int  intersectId = 0  )

virtual

This function must page in all the geometry specified by the argument, and return true when successful.

If this method returns false, it will be called again later, until it returns true or times out.

Implements DtBoundingVolumeTerrainSourcePager.

virtual bool DtPagedLodTerrainSourcePager::pageOutNodes ( std::list< DtNodeId > &  nodesToRemove )

virtual

This function must cause the page out of the nodeIds specified.

It should return true when successful. It will be called repeatedly with the same arguments until it succeeds.

Implements DtBoundingVolumeTerrainSourcePager.

virtual void DtPagedLodTerrainSourcePager::updateTerrain ( const unsigned int  intersectId = 0 )

virtual

Implements DtBoundingVolumeTerrainSourcePager.

virtual void DtPagedLodTerrainSourcePager::updatePageTracker ( const unsigned int  intersectId = 0 )

virtual

Updates the DtOsgTerrainSourceTracker.

Implements DtBoundingVolumeTerrainSourcePager.

static DtTerrainSourcePager* DtPagedLodTerrainSourcePager::terrainChooserFunction ( osg::Node &  node, DtVantageTerrainEngine *  terrainEngine, const DtFilename &  surfaceCharacterMap  )

static

This is the function that is registered with the DtTerrainSourceChooser.

If node is a pagedLOD node, then a DtPagedLodTerrainSourcePager is returned.

osg::Node* DtPagedLodTerrainSourcePager::terrainRoot ( )

protected

The root node that this pager is operating on.

virtual bool DtPagedLodTerrainSourcePager::pageInData ( DtPageInVisitor &  visitor )

protectedvirtual

static DtNodeId DtPagedLodTerrainSourcePager::osgNodeId ( osg::Node *  node )

staticprotected

Methods for converting to/from DtNodeId.

These are protected, because only the pager should be accessing NodeIds as if they are actual nodes. The tracker does not do that since it operates in a separate thread.

static osg::Node* DtPagedLodTerrainSourcePager::nodeFromId ( DtNodeId  nodeId )

staticprotected

Methods for converting to/from DtNodeId.

These are protected, because only the pager should be accessing NodeIds as if they are actual nodes. The tracker does not do that since it operates in a separate thread.

Member Data Documentation

osg::Node* DtPagedLodTerrainSourcePager::myRootNode

protected

The node on which this pager operates.

bool DtPagedLodTerrainSourcePager::myForceUpdate

protected

Used to force update terrain when data has been paged out.

DtFilename DtPagedLodTerrainSourcePager::mySurfaceCharacterMap

protected

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

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vantageTerrainImplementation/pagedLodTerrainSourcePager.h