DtOsgEarthTerrainSourceTracker Class Reference

Inheritance diagram for DtOsgEarthTerrainSourceTracker:

Classes
struct	IndexConfig
	Information about each individual index file. More...
class	IndexInputInterface
	Generic interface for reading from index. More...
class	IndexInterface
	Interface for allowing users to monitor/control the indexing process. More...
class	IndexOutputInterface
	Generic interface for writing to index. More...
class	TileSpatialIndex

Public Member Functions
	DtOsgEarthTerrainSourceTracker (DtVantageTerrainEngine *, DtPagerCommandQueue *commandQueue, osgEarth::MapNode *mapNode)
virtual bool	useRawElevation () const
	True if using elevation data (i.e. if using osgEarth REX engine).
virtual boost::optional < DtTerrainIntersectOptions::Fidelity >	intersectFidelity () const
	Fidelity this tracker is configured for.
virtual unsigned	tileCount () const
	Number of currently paged in tiles.
virtual unsigned	cellCount () const
	Number of cells in index.
virtual osgEarth::MapNode *	mapNode () const
	Access osgEarth::MapNode object.
virtual bool	init (DtTerrainSourcePager &)
	Initialize after configuration.
virtual void	addPagedInTile (const osgEarth::TileKey &tilekey, const boost::shared_ptr< DtTileData > &tileData)
	Adds a tileId and the corresponding tileData to #myPagedInTiles.
virtual void	removePagedInTile (const osgEarth::TileKey tileKey)
	Removes a tileId and the corresponding tileData from #myPagedInTiles.
virtual bool	dataAvailable (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry)
	Finds all tiles within geometry, and tests to see whether they have all been paged in already.
virtual bool	findHeightFieldIntersections (DtTerrainIntersectStatus &status, const DtChord &chord, DtVrfChordIntersectRecordList &intList, const DtTerrainIntersectOptions &options) const
	Performs terrain intersections.
virtual bool	halveChordAndFindHeightFieldIntrx (const DtChord &chord, DtChord convertedChord, const DtTerrainIntersectOptions &options, DtTerrainIntersectStatus &status, DtVrfChordIntersectRecordList &intList) const
	Used in findHeightFieldIntersections.
virtual bool	splitChordAt180AndFindHeightFieldIntrx (const DtChord &chord, const DtTerrainIntersectOptions &options, DtTerrainIntersectStatus &status, DtVrfChordIntersectRecordList &intList) const
	Used in findHeightFieldIntersections.
virtual void	processTriangles (DtTriangleOutputInterface &output, const DtTerrainProcessPolygonsBox &box) const
	Outputs triangles interpolated from elevation data.
virtual void	pageInData (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry)
	Page in data within geometry.
virtual DtTerrainIntersectIDType	findOldestPagedData (unsigned int &numTrianglesOut)
	Finds the least-recently-used tile and set myOldestPagedObject to it.
virtual void	pageOutOldestData (const int priority)
	Adds a page out command for the least-recently-used tileID to myCommandQueue.
virtual bool	canPageOutData (DtTerrainIntersectIDType intersectId)
	Returns true if there is data that can be paged out.
virtual osgEarth::TileKey	getBestTileKey (const osgEarth::TileKey &) const
	Uses osgearth layer data to find the smallest lod for a given area that actually has data.
virtual void	findMissingTiles (const DtTerrainPagingGeometryPtr &geometry, DtTileKeyList &tiles) const
	Find all the tiles that intersect the geometry which are not paged in.
virtual void	writeIndex (IndexInterface &, IndexOutputInterface &) const
	Writes an index using the whole terrain (i.e. merged) elevation data.
virtual bool	writeIndexLayers (IndexInterface &, unsigned precision) const
	Writes indices for each elevation layer.
virtual std::vector< IndexConfig >	getIndexConfigInfoForLayer (const osgEarth::ElevationLayer &layer) const
	Return vector of index config objects, one per each index set in layer.
virtual void	readIndex (IndexInputInterface &, unsigned layerNumber, const IndexConfig &idxConfig)
	Reads an index file.
virtual bool	readIndexLayers ()
	Reads per layer index files.
	TileDataCallback ()
virtual bool	operator() (const boost::shared_ptr< DtTileData > &tile)=0
virtual unsigned	maxLOD () const
	Max lod that the tracker will generate.
virtual void	setMaxLOD (unsigned)
virtual unsigned	getMaxLODForBilinearIntersection () const
	Max lod at which intersections will be done by exact solution of bilinear surface.
virtual void	setMaxLODForBilinearIntersection (unsigned)
virtual double	triangleOutputMergeTolerance () const
	If the max difference between true elevation and elevation defined by the two triangles that make up this cell is less than this value then the system will use those two triangles instead of breaking them up further.
virtual void	setTriangleOutputMergeTolerance (double tol)
virtual double	intersetionTriangleMergeTolerance () const
virtual void	setIntersectionTriangleMergeTolerance (double tol)
virtual unsigned	minElevationIndexLOD () const
	Sets the range of LOD levels where elevation values from the terrain index will be used.
virtual void	setMinElevationIndexLOD (unsigned)
virtual unsigned	maxElevationIndexLOD () const
virtual void	setMaxElevationIndexLOD (unsigned)
virtual double	maxChordLengthBeforeSplitSquared () const
	Set the max chord length before chords are split.
virtual void	setMaxChordLengthBeforeSplit (double)
virtual unsigned	maxElevationChordSplitTestLOD () const
	Sets the max lod used to estimate max terrain elevation under chords.
virtual void	setMaxElevationChordSplitTestLOD (unsigned)
Public Member Functions inherited from DtTerrainSourceTracker
	DtTerrainSourceTracker (DtVantageTerrainEngine *, DtPagerCommandQueue *commandQueue)
virtual	~DtTerrainSourceTracker ()
virtual DtTerrainInterfaceConfig &	configOptions ()
virtual const DtTerrainInterfaceConfig &	configOptions () const
virtual bool	init (DtTerrainSourcePager &)
	Called after options are set.
virtual boost::optional < DtTerrainIntersectOptions::Fidelity >	intersectFidelity () const
	Fidelity that this tracker is configured for.
virtual bool	dataAvailable (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry)=0
virtual void	pageInData (DtPagingMetaDataPtr metaData, DtTerrainPagingGeometryPtr geometry)=0
virtual bool	canPageOutData (DtTerrainIntersectIDType intersectId)=0
virtual DtTerrainIntersectIDType	findOldestPagedData (unsigned int &numTriangles)=0
virtual void	pageOutOldestData (const int priority)=0
virtual void	addNodesToCollisionMapping (DtNodeId node, DtCollisionObjectList *collObjList)
virtual void	removeNodeToCollisionMappings (DtNodeId node)
virtual DtCollisionObjectList	collisionObjectsForNode (DtNodeId node)
virtual const Coordinate_System *	localCS () const
virtual void	setLabel (const DtString &)
virtual void	printInfo () const

Protected Types
typedef boost::ptr_vector < TileSpatialIndex >	TileRoots

Protected Member Functions
virtual DtPageInTilesCommand *	createPageInTilesCommand (DtPagingMetaDataPtr metaData)
virtual DtPageOutTilesCommand *	createPageOutTilesCommand (DtPagingMetaDataPtr metaData)
virtual bool	nearCenterOfEarth (const DtChord &chord) const
virtual bool	aboveAllTerrain (const DtChord &geocentricChord, const DtChord &geodeticCoord) const
virtual bool	shortEnoughForIntersection (const DtChord &geocentricChord, const DtChord &geodeticChord, double chordLengthSq) const
	Determines if the chord is (not) above the threshold length myMaxChordLengthBeforeSplitSquared.
virtual bool	crosses180Lon (const DtChord &geodeticChord) const
	Determines if the chord goes between end points that are on opposite sides of the lon = 180 meridian.
virtual bool	findData (const DtTerrainPagingGeometry *geometry, std::vector< boost::shared_ptr< DtTileData > > &data, const DtPagingMetaDataPtr &metaData=DtPagingMetaDataPtr(), TileDataCallback *callback=0) const
virtual bool	findData (const DtTerrainPagingGeometry *geometry, std::vector< boost::shared_ptr< DtTileData > > &data, TileDataCallback *callback) const
virtual void	findMissing (const DtTerrainPagingGeometry &geometry, DtTileKeyList &missing) const
virtual boost::shared_ptr < DtTileData >	findOldest () const
virtual boost::shared_ptr < DtTileData >	findOldestUnlocked () const
virtual void	convertGeometry (const DtTerrainPagingGeometryPtr &geometry, std::vector< DtTerrainPagingGeometryPtr > &output) const
	Convert geometry to internal coordinate system.
virtual bool	convertGeometry (const DtTerrainPagingChord &geometry, std::vector< DtTerrainPagingGeometryPtr > &output) const
virtual bool	convertGeometry (const DtTerrainPagingSphere &geometry, std::vector< DtTerrainPagingGeometryPtr > &output) const
virtual bool	convertGeometry (const DtTerrainPagingShape &geometry, std::vector< DtTerrainPagingGeometryPtr > &output) const

Protected Attributes
const osg::ref_ptr < osgEarth::MapNode >	myMapNode
	map node for whole terrain
osgEarth::ElevationLayerVector	myElevationLayers
	top level elevation layers
osgEarth::ElevationLayerVector	myFlattenedElevationLayers
	flattens composite layers
const bool	myUseRawElevation
	use elevation (if false old geometry system will be used)
unsigned int	myMaxLOD
	max LOD of the whole system
unsigned int	myMaxLODForBilinearIntersection
	max LOD which will use exact intersection with bilinear surface
double	myTriangleOutputMergeTolerance
	max error tolerances used to decide when it's not necessary triangle elevation to full resolution
double	myIntersetionTriangleMergeTolerance
unsigned	myMinElevationIndexLOD
	range of LODs where elevation from index will be used
unsigned	myMaxElevationIndexLOD
double	myMaxChordLengthBeforeSplitSquared
	max chord length squared before chords are split
unsigned	myMaxElevationChordSplitLOD
	max lod used for estimated max elevation under chord for spliting chords
TileRoots	myTileSpatialIndexRoots
	roots of the quad tree (not necessarily 4, geodetic usually has 2)
const double	myWorldWidth
	width of world in osgearth coord sys, used for wrapping coords
DtTerrainIntersectOptions::Fidelity	myFidelity
	intersect fidelity for this layer
boost::weak_ptr< DtTileData >	myOldestData
	cached pointer to oldest tile data
Protected Attributes inherited from DtTerrainSourceTracker
DtString	myLabel
DtTerrainInterfaceConfig	myConfig
DtPagerCommandQueue *	myCommandQueue
DtNodeToCollObjMMap	myNodeToCollObjMMap
tbb::spin_rw_mutex	myMutex
DtVantageTerrainEngine *	myVantageTerrainEngine

Private Attributes
bool	myIsFinished

Friends
class	DtOsgEarthTerrainSourceTracker

Member Typedef Documentation

typedef boost::ptr_vector<TileSpatialIndex> DtOsgEarthTerrainSourceTracker::TileRoots

protected

Constructor & Destructor Documentation

DtOsgEarthTerrainSourceTracker::DtOsgEarthTerrainSourceTracker	(	DtVantageTerrainEngine *	,
		DtPagerCommandQueue *	commandQueue,
		osgEarth::MapNode *	mapNode
	)

Member Function Documentation

virtual bool DtOsgEarthTerrainSourceTracker::useRawElevation ( ) const

virtual

True if using elevation data (i.e. if using osgEarth REX engine).

virtual boost::optional<DtTerrainIntersectOptions::Fidelity> DtOsgEarthTerrainSourceTracker::intersectFidelity ( ) const

virtual

Fidelity this tracker is configured for.

virtual unsigned DtOsgEarthTerrainSourceTracker::maxLOD ( ) const

virtual

Max lod that the tracker will generate.

virtual void DtOsgEarthTerrainSourceTracker::setMaxLOD ( unsigned  )

virtual

virtual unsigned DtOsgEarthTerrainSourceTracker::getMaxLODForBilinearIntersection ( ) const

virtual

Max lod at which intersections will be done by exact solution of bilinear surface.

Higher lods will be intersected against the same triangle grid that REX uses.

virtual void DtOsgEarthTerrainSourceTracker::setMaxLODForBilinearIntersection ( unsigned  )

virtual

virtual double DtOsgEarthTerrainSourceTracker::triangleOutputMergeTolerance ( ) const

virtual

If the max difference between true elevation and elevation defined by the two triangles that make up this cell is less than this value then the system will use those two triangles instead of breaking them up further.

Intersection is for terrain intersections. Triangle output is for triangle generation.

virtual void DtOsgEarthTerrainSourceTracker::setTriangleOutputMergeTolerance ( double  tol )

virtual

virtual double DtOsgEarthTerrainSourceTracker::intersetionTriangleMergeTolerance ( ) const

virtual

virtual void DtOsgEarthTerrainSourceTracker::setIntersectionTriangleMergeTolerance ( double  tol )

virtual

virtual unsigned DtOsgEarthTerrainSourceTracker::minElevationIndexLOD ( ) const

virtual

Sets the range of LOD levels where elevation values from the terrain index will be used.

virtual void DtOsgEarthTerrainSourceTracker::setMinElevationIndexLOD ( unsigned  )

virtual

virtual unsigned DtOsgEarthTerrainSourceTracker::maxElevationIndexLOD ( ) const

virtual

virtual void DtOsgEarthTerrainSourceTracker::setMaxElevationIndexLOD ( unsigned  )

virtual

virtual double DtOsgEarthTerrainSourceTracker::maxChordLengthBeforeSplitSquared ( ) const

virtual

Set the max chord length before chords are split.

virtual void DtOsgEarthTerrainSourceTracker::setMaxChordLengthBeforeSplit ( double  )

virtual

virtual unsigned DtOsgEarthTerrainSourceTracker::maxElevationChordSplitTestLOD ( ) const

virtual

Sets the max lod used to estimate max terrain elevation under chords.

virtual void DtOsgEarthTerrainSourceTracker::setMaxElevationChordSplitTestLOD ( unsigned  )

virtual

virtual unsigned DtOsgEarthTerrainSourceTracker::tileCount ( ) const

virtual

Number of currently paged in tiles.

virtual unsigned DtOsgEarthTerrainSourceTracker::cellCount ( ) const

virtual

Number of cells in index.

virtual osgEarth::MapNode* DtOsgEarthTerrainSourceTracker::mapNode ( ) const

virtual

Access osgEarth::MapNode object.

virtual bool DtOsgEarthTerrainSourceTracker::init ( DtTerrainSourcePager &  )

virtual

Initialize after configuration.

virtual void DtOsgEarthTerrainSourceTracker::addPagedInTile ( const osgEarth::TileKey &  tilekey, const boost::shared_ptr< DtTileData > &  tileData  )

virtual

Adds a tileId and the corresponding tileData to #myPagedInTiles.

Parameters

tileId	Key for the tileData passed in.
tileData	tileData to create the tileId -> tileData mapping with.

virtual void DtOsgEarthTerrainSourceTracker::removePagedInTile ( const osgEarth::TileKey  tileKey )

virtual

Removes a tileId and the corresponding tileData from #myPagedInTiles.

virtual bool DtOsgEarthTerrainSourceTracker::dataAvailable ( DtPagingMetaDataPtr  metaData, DtTerrainPagingGeometryPtr  geometry  )

virtual

Finds all tiles within geometry, and tests to see whether they have all been paged in already.

Tiles within the geometry that have been paged in have their "lastUsed" data set to the intersectId parameter for removal priority.

Parameters

geometry	The geometry to test for data available.
intersectId	Optional parameter to mark already-paged-in tiles with.

Returns

True if all data within this geometry has been paged in.

virtual bool DtOsgEarthTerrainSourceTracker::findHeightFieldIntersections ( DtTerrainIntersectStatus &  status, const DtChord &  chord, DtVrfChordIntersectRecordList &  intList, const DtTerrainIntersectOptions &  options  ) const

virtual

Performs terrain intersections.

Parameters

status	See DtTerrainIntersectStatus.
chord	Chord to intersect.
intList	Results added to this.
options	See DtTerrainIntersectOptions.

virtual bool DtOsgEarthTerrainSourceTracker::halveChordAndFindHeightFieldIntrx ( const DtChord &  chord, DtChord  convertedChord, const DtTerrainIntersectOptions &  options, DtTerrainIntersectStatus &  status, DtVrfChordIntersectRecordList &  intList  ) const

virtual

Used in findHeightFieldIntersections.

Splits a long chord (shortEnoughForIntersection is false) into halves and recursively checks findHeightFieldIntersections on each.

virtual bool DtOsgEarthTerrainSourceTracker::splitChordAt180AndFindHeightFieldIntrx ( const DtChord &  chord, const DtTerrainIntersectOptions &  options, DtTerrainIntersectStatus &  status, DtVrfChordIntersectRecordList &  intList  ) const

virtual

Used in findHeightFieldIntersections.

Splits the chord at lon = 180 (Geoc y=0) and recursively checks findHeightFieldIntersections on each part.

virtual void DtOsgEarthTerrainSourceTracker::processTriangles ( DtTriangleOutputInterface &  output, const DtTerrainProcessPolygonsBox &  box  ) const

virtual

Outputs triangles interpolated from elevation data.

Parameters

output	Output interface which received triangles.
box	Query which defines which area is output.

virtual void DtOsgEarthTerrainSourceTracker::pageInData ( DtPagingMetaDataPtr  metaData, DtTerrainPagingGeometryPtr  geometry  )

virtual

Page in data within geometry.

Determines which tiles are within the geometry and adds a page in command to myCommandQueue to page in any tiles within the geometry that have not yet been paged in.

Parameters

geometry	The geometry to page in data within.
intersectId	Id to assign to the page in command to seed tileData for newly paged-in tiles.
priority	Priority to use for commands generated by this call.

virtual DtTerrainIntersectIDType DtOsgEarthTerrainSourceTracker::findOldestPagedData ( unsigned int &  numTrianglesOut )

virtual

Finds the least-recently-used tile and set myOldestPagedObject to it.

Parameters

numTrianglesOut

The number of triangles the least-recently-used tileId represents in the collision world.

Returns

The id of the last intersect test for which this tracker's least-recently-used data was necessary.

virtual void DtOsgEarthTerrainSourceTracker::pageOutOldestData ( const int  priority )

virtual

Adds a page out command for the least-recently-used tileID to myCommandQueue.

Parameters

priority

Priority to use for commands generated by this call.

virtual bool DtOsgEarthTerrainSourceTracker::canPageOutData ( DtTerrainIntersectIDType  intersectId )

virtual

Returns true if there is data that can be paged out.

virtual osgEarth::TileKey DtOsgEarthTerrainSourceTracker::getBestTileKey ( const osgEarth::TileKey &  ) const

virtual

Uses osgearth layer data to find the smallest lod for a given area that actually has data.

The osgearth APIs can only return a larger tile (i.e. smaller lod), so this function is used by starting with the highest LOD (the max LOD set, which is 19 by default for REX) and then going up. Elevation layers may not have any information on this in which case the input key will be returned. This is all used so that we don't have to always have to start checking for data at the highest LOD. The quadtree itself uses this to cap the depth in a given area.

virtual void DtOsgEarthTerrainSourceTracker::findMissingTiles ( const DtTerrainPagingGeometryPtr &  geometry, DtTileKeyList &  tiles  ) const

virtual

Find all the tiles that intersect the geometry which are not paged in.

virtual void DtOsgEarthTerrainSourceTracker::writeIndex ( IndexInterface &  , IndexOutputInterface &    ) const

virtual

Writes an index using the whole terrain (i.e. merged) elevation data.

virtual bool DtOsgEarthTerrainSourceTracker::writeIndexLayers ( IndexInterface &  , unsigned  precision  ) const

virtual

Writes indices for each elevation layer.

Returns

True if no error, false otherwise.

virtual std::vector<IndexConfig> DtOsgEarthTerrainSourceTracker::getIndexConfigInfoForLayer ( const osgEarth::ElevationLayer &  layer ) const

virtual

Return vector of index config objects, one per each index set in layer.

virtual void DtOsgEarthTerrainSourceTracker::readIndex ( IndexInputInterface &  , unsigned  layerNumber, const IndexConfig &  idxConfig  )

virtual

Reads an index file.

virtual bool DtOsgEarthTerrainSourceTracker::readIndexLayers ( )

virtual

Reads per layer index files.

Returns

True if no error, false otherwise.

virtual DtPageInTilesCommand* DtOsgEarthTerrainSourceTracker::createPageInTilesCommand ( DtPagingMetaDataPtr  metaData )

protectedvirtual

virtual DtPageOutTilesCommand* DtOsgEarthTerrainSourceTracker::createPageOutTilesCommand ( DtPagingMetaDataPtr  metaData )

protectedvirtual

virtual void DtOsgEarthTerrainSourceTracker::convertGeometry ( const DtTerrainPagingGeometryPtr &  geometry, std::vector< DtTerrainPagingGeometryPtr > &  output  ) const

protectedvirtual

Convert geometry to internal coordinate system.

virtual bool DtOsgEarthTerrainSourceTracker::convertGeometry ( const DtTerrainPagingChord &  geometry, std::vector< DtTerrainPagingGeometryPtr > &  output  ) const

protectedvirtual

virtual bool DtOsgEarthTerrainSourceTracker::convertGeometry ( const DtTerrainPagingSphere &  geometry, std::vector< DtTerrainPagingGeometryPtr > &  output  ) const

protectedvirtual

virtual bool DtOsgEarthTerrainSourceTracker::convertGeometry ( const DtTerrainPagingShape &  geometry, std::vector< DtTerrainPagingGeometryPtr > &  output  ) const

protectedvirtual

virtual bool DtOsgEarthTerrainSourceTracker::nearCenterOfEarth ( const DtChord &  chord ) const

protectedvirtual

virtual bool DtOsgEarthTerrainSourceTracker::aboveAllTerrain ( const DtChord &  geocentricChord, const DtChord &  geodeticCoord  ) const

protectedvirtual

virtual bool DtOsgEarthTerrainSourceTracker::shortEnoughForIntersection ( const DtChord &  geocentricChord, const DtChord &  geodeticChord, double  chordLengthSq  ) const

protectedvirtual

Determines if the chord is (not) above the threshold length myMaxChordLengthBeforeSplitSquared.

virtual bool DtOsgEarthTerrainSourceTracker::crosses180Lon ( const DtChord &  geodeticChord ) const

protectedvirtual

Determines if the chord goes between end points that are on opposite sides of the lon = 180 meridian.

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

protectedvirtual

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

protectedvirtual

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

protectedvirtual

virtual boost::shared_ptr<DtTileData> DtOsgEarthTerrainSourceTracker::findOldest ( ) const

protectedvirtual

virtual boost::shared_ptr<DtTileData> DtOsgEarthTerrainSourceTracker::findOldestUnlocked ( ) const

protectedvirtual

DtOsgEarthTerrainSourceTracker::TileDataCallback ( )

explicit

virtual bool DtOsgEarthTerrainSourceTracker::operator() ( const boost::shared_ptr< DtTileData > &  tile )

pure virtual

Friends And Related Function Documentation

friend class DtOsgEarthTerrainSourceTracker

friend

Member Data Documentation

const osg::ref_ptr<osgEarth::MapNode> DtOsgEarthTerrainSourceTracker::myMapNode

protected

map node for whole terrain

osgEarth::ElevationLayerVector DtOsgEarthTerrainSourceTracker::myElevationLayers

protected

top level elevation layers

osgEarth::ElevationLayerVector DtOsgEarthTerrainSourceTracker::myFlattenedElevationLayers

protected

flattens composite layers

const bool DtOsgEarthTerrainSourceTracker::myUseRawElevation

protected

use elevation (if false old geometry system will be used)

unsigned int DtOsgEarthTerrainSourceTracker::myMaxLOD

protected

max LOD of the whole system

unsigned int DtOsgEarthTerrainSourceTracker::myMaxLODForBilinearIntersection

protected

max LOD which will use exact intersection with bilinear surface

double DtOsgEarthTerrainSourceTracker::myTriangleOutputMergeTolerance

protected

max error tolerances used to decide when it's not necessary triangle elevation to full resolution

double DtOsgEarthTerrainSourceTracker::myIntersetionTriangleMergeTolerance

protected

unsigned DtOsgEarthTerrainSourceTracker::myMinElevationIndexLOD

protected

range of LODs where elevation from index will be used

unsigned DtOsgEarthTerrainSourceTracker::myMaxElevationIndexLOD

protected

double DtOsgEarthTerrainSourceTracker::myMaxChordLengthBeforeSplitSquared

protected

max chord length squared before chords are split

unsigned DtOsgEarthTerrainSourceTracker::myMaxElevationChordSplitLOD

protected

max lod used for estimated max elevation under chord for spliting chords

TileRoots DtOsgEarthTerrainSourceTracker::myTileSpatialIndexRoots

protected

roots of the quad tree (not necessarily 4, geodetic usually has 2)

const double DtOsgEarthTerrainSourceTracker::myWorldWidth

protected

width of world in osgearth coord sys, used for wrapping coords

DtTerrainIntersectOptions::Fidelity DtOsgEarthTerrainSourceTracker::myFidelity

protected

intersect fidelity for this layer

boost::weak_ptr<DtTileData> DtOsgEarthTerrainSourceTracker::myOldestData

protected

cached pointer to oldest tile data

bool DtOsgEarthTerrainSourceTracker::myIsFinished

private

---

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

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