TileSpatialIndex Class Reference

Classes
struct	ElevationRange
struct	SubTileSlot
struct	ValidElevationRange

Public Member Functions
	TileSpatialIndex (const DtTerrainSourceTracker &tracker, const osgEarth::TileKey &tilekey, TileSpatialIndex *parent)
void	getExtent (DtVector &lower, DtVector &upper, bool useElevation=true) const
void	getSubTileExtent (unsigned i, DtVector &lower, DtVector &upper, bool useElevation=true) const
bool	intersects (const DtTerrainPagingGeometry &geometry) const
bool	intersectsSubTile (const DtTerrainPagingGeometry &geometry, int i) const
bool	chordIntersects (const DtChord &chord, bool useElevation=true) const
bool	extentIntersects (const DtExtent &extent) const
bool	sphereIntersects (const DtSphere &sphere) const
bool	shapeIntersects (const DtLocalVertexList &shape) const
void	findMissing (const DtTerrainPagingGeometry &geometry, DtTileKeyList &missing) const
bool	findData (const DtTerrainPagingGeometry *geometry, std::vector< boost::shared_ptr< DtTileData > > &data, TileDataCallback *callback=0) const
boost::optional< double >	getMaxAltForChord (const DtChord &chord, unsigned maxlod) const
boost::shared_ptr< DtTileData >	findOldest () const
bool	addTile (const osgEarth::TileKey &key, const boost::shared_ptr< DtTileData > &data)
void	removeTile (const osgEarth::TileKey &tilekey)
void	getTiles (std::vector< osgEarth::TileKey > &keys, unsigned lod)
unsigned	tileCount () const
unsigned	cellCount () const
const osgEarth::TileKey	tileKey () const
TileSpatialIndex *	setAltitudeRange (const osgEarth::TileKey &key, const ElevationRange &range, const ElevationRange &offsets, unsigned layerNum, bool coversTile)
bool	postProcessIndexLayer (unsigned layerNum)
void	writeIndex (IndexInterface &iface, IndexOutputInterface &output, osgEarth::ElevationLayer *layer=0) const

Protected Member Functions
bool	findDataChord (const DtTerrainPagingChord *geometry, std::vector< boost::shared_ptr< DtTileData > > &data, bool verifyInCache, TileDataCallback *callback=0) const
bool	findDataShape (const DtTerrainPagingShape *geometry, std::vector< boost::shared_ptr< DtTileData > > &data, bool verifyInCache, TileDataCallback *callback=0) const
bool	findDataSphere (const DtTerrainPagingSphere *geometry, std::vector< boost::shared_ptr< DtTileData > > &data, bool verifyInCache, TileDataCallback *callback=0) const
bool	chordIntersectsSubTile (const DtChord &chord, int i, bool useElevation=true) const
bool	extentIntersectsSubTile (const DtExtent &shape, int i) const
bool	sphereIntersectsSubTile (const DtSphere &sphere, int i) const
bool	shapeIntersectsSubTile (const DtLocalVertexList &shape, int i) const
bool	isTileEmpty () const
virtual void	recomputePagedInData ()
SubTileSlot &	getOrCreateSlot (unsigned i)
void	pageOutSlotIfUnused (unsigned i)

Protected Attributes
const DtTerrainSourceTracker &	myTracker
TileSpatialIndex *	myParent
const osgEarth::TileKey	myTileKey
const osgEarth::GeoExtent	myGeoExtent
const bool	myUseElevationFlag
boost::optional< ElevationRange >	myElevationRange
bool	myPinned
SubTileSlot	mySubTiles [4]
boost::shared_ptr< DtTileData >	myTileData
bool	myAllPagedInFlag
bool	myMaxDataLevelFlag
tbb::spin_rw_mutex	myMutex
std::vector< boost::optional < ValidElevationRange > >	myPreviousLayersElevationRange

Constructor & Destructor Documentation

TileSpatialIndex::TileSpatialIndex	(	const DtTerrainSourceTracker &	tracker,
		const osgEarth::TileKey &	tilekey,
		TileSpatialIndex *	parent
	)

Member Function Documentation

void TileSpatialIndex::getExtent	(	DtVector &	lower,
		DtVector &	upper,
		bool	useElevation = true
	)		const

void TileSpatialIndex::getSubTileExtent	(	unsigned	i,
		DtVector &	lower,
		DtVector &	upper,
		bool	useElevation = true
	)		const

bool TileSpatialIndex::intersects

(

const DtTerrainPagingGeometry &

geometry

)

const

bool TileSpatialIndex::intersectsSubTile	(	const DtTerrainPagingGeometry &	geometry,
		int	i
	)		const

bool TileSpatialIndex::chordIntersects	(	const DtChord &	chord,
		bool	useElevation = true
	)		const

bool TileSpatialIndex::extentIntersects

(

const DtExtent &

extent

)

const

bool TileSpatialIndex::sphereIntersects

(

const DtSphere &

sphere

)

const

bool TileSpatialIndex::shapeIntersects

(

const DtLocalVertexList &

shape

)

const

void TileSpatialIndex::findMissing	(	const DtTerrainPagingGeometry &	geometry,
		DtTileKeyList &	missing
	)		const

Compute tiles which are not paged in which intersect geometry.

bool TileSpatialIndex::findData	(	const DtTerrainPagingGeometry *	geometry,
		std::vector< boost::shared_ptr< DtTileData > > &	data,
		TileDataCallback *	callback = 0
	)		const

Find tiles which are paged in which intersect geometry. If geometry is null then returns all paged in tiles.

boost::optional<double> TileSpatialIndex::getMaxAltForChord	(	const DtChord &	chord,
		unsigned	maxlod
	)		const

Returns an estimate of the max altitude of the area of the elevation data covered by the chord.

boost::shared_ptr<DtTileData> TileSpatialIndex::findOldest

(

)

const

Finds the oldest (last used) tile.

bool TileSpatialIndex::addTile	(	const osgEarth::TileKey &	key,
		const boost::shared_ptr< DtTileData > &	data
	)

Adds a tile to the tracker. The key parameter and the key for the data may not be the same and the data may already be paged in. The key is the area we are marking as valid for the data region, so the key has to be a descendant of the key of the data.

void TileSpatialIndex::removeTile

(

const osgEarth::TileKey &

tilekey

)

Pages out data.

void TileSpatialIndex::getTiles	(	std::vector< osgEarth::TileKey > &	keys,
		unsigned	lod
	)

Get tiles tileKey list for a specific LOD.

unsigned TileSpatialIndex::tileCount

(

)

const

Number of tiles with data.

unsigned TileSpatialIndex::cellCount

(

)

const

Number of total indexing cells, including ones without data.

const osgEarth::TileKey TileSpatialIndex::tileKey ( ) const

inline

Tilekey for this index cell.

TileSpatialIndex* TileSpatialIndex::setAltitudeRange	(	const osgEarth::TileKey &	key,
		const ElevationRange &	range,
		const ElevationRange &	offsets,
		unsigned	layerNum,
		bool	coversTile
	)

Sets the min/max elevation for a given cell.

bool TileSpatialIndex::postProcessIndexLayer

(

unsigned

layerNum

)

Processes per layer index data.

void TileSpatialIndex::writeIndex	(	IndexInterface &	iface,
		IndexOutputInterface &	output,
		osgEarth::ElevationLayer *	layer = 0
	)		const

Read data from terrain engine and write to stream. iface functions control which keys get processed.

bool TileSpatialIndex::findDataChord ( const DtTerrainPagingChord *  geometry, std::vector< boost::shared_ptr< DtTileData > > &  data, bool  verifyInCache, TileDataCallback *  callback = 0  ) const

protected

Specific FindData for Chord to speed up the findData by limiting the number of geometry test.

bool TileSpatialIndex::findDataShape ( const DtTerrainPagingShape *  geometry, std::vector< boost::shared_ptr< DtTileData > > &  data, bool  verifyInCache, TileDataCallback *  callback = 0  ) const

protected

Specific FindData for Shape to speed up the findData by limiting the number of geometry test.

bool TileSpatialIndex::findDataSphere ( const DtTerrainPagingSphere *  geometry, std::vector< boost::shared_ptr< DtTileData > > &  data, bool  verifyInCache, TileDataCallback *  callback = 0  ) const

protected

Specific FindData for Sphere to speed up the findData by limiting the number of geometry test.

bool TileSpatialIndex::chordIntersectsSubTile ( const DtChord &  chord, int  i, bool  useElevation = true  ) const

protected

bool TileSpatialIndex::extentIntersectsSubTile ( const DtExtent &  shape, int  i  ) const

protected

bool TileSpatialIndex::sphereIntersectsSubTile ( const DtSphere &  sphere, int  i  ) const

protected

bool TileSpatialIndex::shapeIntersectsSubTile ( const DtLocalVertexList &  shape, int  i  ) const

protected

bool TileSpatialIndex::isTileEmpty ( ) const

protected

Whether this tile has any data or not.

virtual void TileSpatialIndex::recomputePagedInData ( )

protectedvirtual

When tiles are paged in/out their ancestor tiles frequently need to recompute some data (i.e. whether their entire area is paged in).

SubTileSlot& TileSpatialIndex::getOrCreateSlot ( unsigned  i )

protected

Returns the ith subtile slot which is guaranteed to have the subtile created.

void TileSpatialIndex::pageOutSlotIfUnused ( unsigned  i )

protected

Deletes the ith subtile if it has no data beneath it.

Member Data Documentation

const DtTerrainSourceTracker& TileSpatialIndex::myTracker

protected

TileSpatialIndex* TileSpatialIndex::myParent

protected

const osgEarth::TileKey TileSpatialIndex::myTileKey

protected

Tilekey for this index cell.

const osgEarth::GeoExtent TileSpatialIndex::myGeoExtent

protected

Extent of this index cell.

const bool TileSpatialIndex::myUseElevationFlag

protected

Whether the min/max elevation should be used for this index cell.

boost::optional<ElevationRange> TileSpatialIndex::myElevationRange

protected

Elevation range for this tile, computed from highest resolution data (i.e. children)

std::vector< boost::optional<ValidElevationRange> > TileSpatialIndex::myPreviousLayersElevationRange

protected

bool TileSpatialIndex::myPinned

protected

Index cell not unloaded if true.

SubTileSlot TileSpatialIndex::mySubTiles[4]

protected

Next level of quadtree.

boost::shared_ptr<DtTileData> TileSpatialIndex::myTileData

protected

Elevation data for this tile.

bool TileSpatialIndex::myAllPagedInFlag

protected

Will be set to true if all the data needed to satisify any request in this tile's extent is paged in.

bool TileSpatialIndex::myMaxDataLevelFlag

protected

True if we have determined that there is no higher resolution data in any subtiles.

tbb::spin_rw_mutex TileSpatialIndex::myMutex

mutableprotected

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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/tileSpatialIndex.h