DtActivePageTracker Class Reference

This class keeps track of what parts of the terrain database are currently paged in and what ones are not. It is able to give very quick answers to queries about if all the data needed to satisfy a particular database request is loaded or not.

Public Member Functions
	DtActivePageTracker ()
virtual	~DtActivePageTracker ()
virtual void	setVantageTerrainEngine (DtVantageTerrainEngine *)
virtual void	pageInData (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry, DtTerrainIntersectOptions::Fidelity=DtTerrainIntersectOptions::MAX_FIDELITY)
virtual bool	pageInUnavailableData (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry, DtTerrainIntersectOptions::Fidelity=DtTerrainIntersectOptions::MAX_FIDELITY)
virtual bool	dataAvailable (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry, DtTerrainIntersectOptions::Fidelity=DtTerrainIntersectOptions::MAX_FIDELITY)
virtual void	addTerrainSourceTracker (DtTerrainSourceTracker *terrainSourceTracker)
virtual void	removeTerrainSourceTracker (DtTerrainSourceTracker *terrainSourceTracker)
virtual bool	canPageOutData (DtTerrainIntersectIDType intersectId=0)
virtual unsigned int	pageOutData (const int priority, unsigned int numTrianglesToPageOut, DtTerrainIntersectIDType intersectId)
virtual void	setIntersectDataLoadExpireTime (const double &expireTime)
virtual bool	printInfo () const
virtual void	getPageInData (DtNodeBoundingList &nodeBoundingList)
virtual void	getPageOutData (DtNodeBoundingList &nodeBoundingList)
virtual void	getProceduralTreeTile (DtDebugDrawTerrainOutputInterface::terrainLineList &nodeBoundingList)
virtual void	setUseTbb (bool value)
virtual void	clearCache ()

Protected Attributes
DtVantageTerrainEngine *	myTerrainEngine
DtPrintPagingInfoCommand *	myPrintInfoCommand
DtTerrainSourceTrackerList	myTerrainSourceTrackers
double	myIntersectDataLoadExpireTime
tbb::spin_rw_mutex	myMutex
tbb::task_arena	myArena
bool	myUseTbb

Private Member Functions
	DtActivePageTracker (const DtActivePageTracker &)
DtActivePageTracker &	operator= (const DtActivePageTracker &)

Constructor & Destructor Documentation

DtActivePageTracker::DtActivePageTracker ( const DtActivePageTracker &  )

private

Not implemented.

DtActivePageTracker::DtActivePageTracker

(

)

Default constructor.

virtual DtActivePageTracker::~DtActivePageTracker ( )

virtual

Destructor.

Member Function Documentation

DtActivePageTracker& DtActivePageTracker::operator= ( const DtActivePageTracker &  )

private

Not implemented.

virtual void DtActivePageTracker::setVantageTerrainEngine ( DtVantageTerrainEngine *  )

virtual

Sets the terrain engine.

virtual void DtActivePageTracker::pageInData ( DtPagingMetaDataPtr  metaData, DtTerrainPagingGeometryPtr  geometry, DtTerrainIntersectOptions::Fidelity  = DtTerrainIntersectOptions::MAX_FIDELITY  )

virtual

Calls pageInData on each tracker in myTerrainSourceTrackers. Once all data corresponding to this call is paged in, all the data necessary for the intersection call will be in the collision world.

Parameters

intersectId	Optional intersectId to seed newly-paged in data with for removal priority. Also used to mark already paged-in data that this geometry would require.
metaData	Data about this page in request
geometry	The geometry to page in.
fidelity	Specify the fidelity of the trackers to use, see DtTerrainIntersectOptions.

virtual bool DtActivePageTracker::pageInUnavailableData ( DtPagingMetaDataPtr  metaData, DtTerrainPagingGeometryPtr  geometry, DtTerrainIntersectOptions::Fidelity  = DtTerrainIntersectOptions::MAX_FIDELITY  )

virtual

Calls pageInData on trackers which return false for dataAvailable.

Parameters

fidelity

Specify the fidelity of the trackers to use, see DtTerrainIntersectOptions.

virtual bool DtActivePageTracker::dataAvailable ( DtPagingMetaDataPtr  metaData, DtTerrainPagingGeometryPtr  geometry, DtTerrainIntersectOptions::Fidelity  = DtTerrainIntersectOptions::MAX_FIDELITY  )

virtual

Calls dataAvailableAlongChord on all available terrainSourceTrackers.

Returns

True if all data along this chord has been paged in.

Parameters

metaData	Data about this page in request
geometry	Used to determine what terrain we're looking for.
fidelity	Specify the fidelity of the trackers to use, see DtTerrainIntersectOptions.

virtual void DtActivePageTracker::addTerrainSourceTracker ( DtTerrainSourceTracker *  terrainSourceTracker )

virtual

// Adds the filename to the list of known not found files. // Updates the paged out areas to reflect the new status. virtual void addToFilesNotFound(std::string filename);

// Checks the filename against the known not found filenames. virtual bool fileNotFound(std::string filename) const; Add a terrain source tracker.

virtual void DtActivePageTracker::removeTerrainSourceTracker ( DtTerrainSourceTracker *  terrainSourceTracker )

virtual

virtual bool DtActivePageTracker::canPageOutData ( DtTerrainIntersectIDType  intersectId = 0 )

virtual

Returns true if any tracker can page out data.

virtual unsigned int DtActivePageTracker::pageOutData ( const int  priority, unsigned int  numTrianglesToPageOut, DtTerrainIntersectIDType  intersectId  )

virtual

Returns

The number of of triangles actually paged out

Parameters

priority	The priority of any commands generated by this call.
numTrianglesToPageOut	The number of triangles this function will attempt to page out, from last-used to most-recently-used.

virtual void DtActivePageTracker::setIntersectDataLoadExpireTime ( const double &  expireTime )

virtual

virtual bool DtActivePageTracker::printInfo ( ) const

virtual

virtual void DtActivePageTracker::getPageInData ( DtNodeBoundingList &  nodeBoundingList )

virtual

virtual void DtActivePageTracker::getPageOutData ( DtNodeBoundingList &  nodeBoundingList )

virtual

virtual void DtActivePageTracker::getProceduralTreeTile ( DtDebugDrawTerrainOutputInterface::terrainLineList &  nodeBoundingList )

virtual

virtual void DtActivePageTracker::setUseTbb ( bool  value )

virtual

virtual void DtActivePageTracker::clearCache ( )

virtual

clear the cache (if any) of each trackers

Member Data Documentation

DtVantageTerrainEngine* DtActivePageTracker::myTerrainEngine

protected

DtPrintPagingInfoCommand* DtActivePageTracker::myPrintInfoCommand

protected

DtTerrainSourceTrackerList DtActivePageTracker::myTerrainSourceTrackers

protected

List of terrain source trackers that will determine whether all the necessary data is paged in for the intersection.

double DtActivePageTracker::myIntersectDataLoadExpireTime

protected

tbb::spin_rw_mutex DtActivePageTracker::myMutex

mutableprotected

tbb::task_arena DtActivePageTracker::myArena

protected

Tbb arena to limit number of threads.

bool DtActivePageTracker::myUseTbb

protected

Enable or not the usage of TBB to multi thread the layers in the intersection can be configured in appData\settings\vrfSim\terrainInterfaceConfig.mtl by changing active-pager-tbb-mode Default is False (can speed up some databases with a lots of tree layers)

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

• /data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-0-branch/include/vantageTerrainImplementation/activePageTracker.h