A Cached Intersector will first look at the local cache, and, if the local cache does not have the information, go to the DtIntersectorManager to get the result, and cache it. More...

Public Member Functions
	DtCachedIntersector (DtDe &de, int modelSet)
	CTOR.
virtual	~DtCachedIntersector ()
	DTOR.
virtual bool	findNearestIntersectionToPoint (double x, double y, double z, double vx, double vy, double vz, DtIntersectorResult &intersection, DtIntersector::IntersectProperties properties=DtIntersector::AllNodes, std::vector< DtElementID > *ignoreList=0, bool returnTriangle=false, double maxIsectorLength=-1., bool useHighLod=false)
	Find the nearest scene intersection from a point (x,y,z) along a vector(vx,vy,vz).
virtual bool	findAllIntersectionsThroughPoint (double x, double y, double z, double vx, double vy, double vz, DtIntersector::DtIntersections &intersections, DtIntersector::IntersectProperties properties=DtIntersector::AllNodes, std::vector< DtElementID > *ignoreList=0, bool sort=true, bool useHighLod=false)
	Return a list of all intersections along the line passing through <x,y,z> and directed by <vx, vy, vz> The useHighLod argument tells the intersector that if the terrain is an osgEarth terrain, don't settle for whatever is paged in; get the highest LOD from the map server for this location and use that.
virtual bool	findFirstIntersectWithLineSegment (double x, double y, double z, double end_x, double end_y, double end_z, DtIntersectorResult &intersection, DtIntersector::IntersectProperties properties=DtIntersector::AllNodes, std::vector< DtElementID > *ignoreList=0, bool useHighLod=false)
	find first intersection along segment x,y,z to end_x, end_y, end_z.
virtual bool	findAllIntersectWithLineSegment (double x, double y, double z, double end_x, double end_y, double end_z, DtIntersector::DtIntersections &intersections, DtIntersector::IntersectProperties properties=DtIntersector::AllNodes, std::vector< DtElementID > *ignoreList=0, bool sort=true, bool useHighLod=false)
	find all intersections along segment x,y,z to end_x, end_y, end_z.
virtual bool	pick (DtChannel &channel, double mx, double my, DtIntersectorResult &intersection, DtIntersector::IntersectProperties properties=DtIntersector::AllNodes, std::vector< DtElementID > *ignoreList=0)
	Find the object (if any) under the mouse mx, my are in window coordinates; cx, cy, cz are returned in database coordinates.
virtual bool	pickAll (DtChannel channel, double mx, double my, DtIntersector::DtIntersections &intersections, DtIntersector::IntersectProperties properties=DtIntersector::AllNodes, std::vector< DtElementID > ignoreList=0)
	Find all the objects (if any) under the mouse mx, my are in window coordinates.
virtual void	setSharedCache (DtIntersectorCache *)
	Sets a shared cache.
virtual void	setCacheLimit (int)
	Sets the size of the cache.
virtual void	clearCache ()
	Clears the intersection cache.
Protected Attributes
DtDe &	myDe
DtIntersectorCache *	myCache
bool	myCacheIsShared
int	myModelSet
int	myCacheLimit

Detailed Description

A Cached Intersector will first look at the local cache, and, if the local cache does not have the information, go to the DtIntersectorManager to get the result, and cache it.

Constructor & Destructor Documentation

makVrv::DtCachedIntersector::DtCachedIntersector	(	DtDe &	de,
		int	modelSet
	)

CTOR.

virtual makVrv::DtCachedIntersector::~DtCachedIntersector ( ) [virtual]

DTOR.

Member Function Documentation

virtual bool makVrv::DtCachedIntersector::findNearestIntersectionToPoint	(	double	x,
		double	y,
		double	z,
		double	vx,
		double	vy,
		double	vz,
		DtIntersectorResult &	intersection,
		DtIntersector::IntersectProperties	properties = `DtIntersector::AllNodes`,
		std::vector< DtElementID > *	ignoreList = `0`,
		bool	returnTriangle = `false`,
		double	maxIsectorLength = `-1.`,
		bool	useHighLod = `false`
	)		`[virtual]`

Find the nearest scene intersection from a point (x,y,z) along a vector(vx,vy,vz).

The useHighLod argument tells the intersector that if the terrain is an osgEarth terrain, don't settle for whatever is paged in; get the highest LOD from the map server for this location and use that Note that if maxIsectorLength is not set, the default is the diameter of the database, which for large (and especially geocentric) databases and world databases, may be too large to get adequate precision when trying to interect small (high resolution) triangles. It is recommended that you set the isector length to something more specific if possible, like the altitude of the observer + a constant, for example; or, for osgEarth databases, useHighLod=true, which will also eliminate the problem.

Return values:

false if no intersection was found (and the isect record is NOT set).

virtual bool makVrv::DtCachedIntersector::findAllIntersectionsThroughPoint	(	double	x,
		double	y,
		double	z,
		double	vx,
		double	vy,
		double	vz,
		DtIntersector::DtIntersections &	intersections,
		DtIntersector::IntersectProperties	properties = `DtIntersector::AllNodes`,
		std::vector< DtElementID > *	ignoreList = `0`,
		bool	sort = `true`,
		bool	useHighLod = `false`
	)		`[virtual]`

Return a list of all intersections along the line passing through <x,y,z> and directed by <vx, vy, vz> The useHighLod argument tells the intersector that if the terrain is an osgEarth terrain, don't settle for whatever is paged in; get the highest LOD from the map server for this location and use that.

Return values:

false if no intersection was found (and the isect record list has size 0).

virtual bool makVrv::DtCachedIntersector::findFirstIntersectWithLineSegment	(	double	x,
		double	y,
		double	z,
		double	end_x,
		double	end_y,
		double	end_z,
		DtIntersectorResult &	intersection,
		DtIntersector::IntersectProperties	properties = `DtIntersector::AllNodes`,
		std::vector< DtElementID > *	ignoreList = `0`,
		bool	useHighLod = `false`
	)		`[virtual]`

find first intersection along segment x,y,z to end_x, end_y, end_z.

The useHighLod argument tells the intersector that if the terrain is an osgEarth terrain, don't settle for whatever is paged in; get the highest LOD from the map server for this location and use that

Return values:

false if no intersection was found (and the isect record is NOT set).

virtual bool makVrv::DtCachedIntersector::findAllIntersectWithLineSegment	(	double	x,
		double	y,
		double	z,
		double	end_x,
		double	end_y,
		double	end_z,
		DtIntersector::DtIntersections &	intersections,
		DtIntersector::IntersectProperties	properties = `DtIntersector::AllNodes`,
		std::vector< DtElementID > *	ignoreList = `0`,
		bool	sort = `true`,
		bool	useHighLod = `false`
	)		`[virtual]`

find all intersections along segment x,y,z to end_x, end_y, end_z.

The useHighLod argument tells the intersector that if the terrain is an osgEarth terrain, don't settle for whatever is paged in; get the highest LOD from the map server for this location and use that

Return values:

false if no intersection was found (and the isect record list has size 0).

virtual bool makVrv::DtCachedIntersector::pick	(	DtChannel &	channel,
		double	mx,
		double	my,
		DtIntersectorResult &	intersection,
		DtIntersector::IntersectProperties	properties = `DtIntersector::AllNodes`,
		std::vector< DtElementID > *	ignoreList = `0`
	)		`[virtual]`

Find the object (if any) under the mouse mx, my are in window coordinates; cx, cy, cz are returned in database coordinates.

Return values:

false if no intersection was found (and the isect record is NOT set).

virtual bool makVrv::DtCachedIntersector::pickAll	(	DtChannel *	channel,
		double	mx,
		double	my,
		DtIntersector::DtIntersections &	intersections,
		DtIntersector::IntersectProperties	properties = `DtIntersector::AllNodes`,
		std::vector< DtElementID > *	ignoreList = `0`
	)		`[virtual]`