DtPagedLodTerrainSourcePager Class Reference

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

Inheritance diagram for DtPagedLodTerrainSourcePager:

List of all members.

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)
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.
Static Public Member Functions
static DtTerrainSourcePager *	terrainChooserFunction (osg::Node &node, DtVantageTerrainEngine *terrainEngine)
	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.

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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.

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Constructor & Destructor Documentation

DtPagedLodTerrainSourcePager::DtPagedLodTerrainSourcePager	(	DtVantageTerrainEngine *	terrainEngine,
		osg::Group *	rootNode
	)

virtual DtPagedLodTerrainSourcePager::~DtPagedLodTerrainSourcePager

(

)

[virtual]

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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
	)		[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

)

[protected, virtual]

static DtNodeId DtPagedLodTerrainSourcePager::osgNodeId

(

osg::Node *

node

)

[static, protected]

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

)

[static, protected]

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.

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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.

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

• include/vantageTerrainImplementation/pagedLodTerrainSourcePager.h