DtTerrainAccessor Class Reference

this class encapsulates all terrain queries made by DtTerrainReasoner. This keeps DtTerrainReasoner completely decoupled from actual terrain representation (effectively DtPhysicalWorld). Using a stub version of DtTerrainAccessor allows testing DtTerrainReasoner with particular debug input that is not readily available in actual terrain.

As DtTerrainReasoner uses topographic coordinates, DtTerrainAccessor handles all necessary transformations between topographic and local coordinates. An instance of DtTerrainAccessor is constructed for each DtTerrainReasoner query (find* method) and gets destructed when the query ends. The instance maintains query specific coordinate transformation context.

Public Member Functions
	DtTerrainAccessor (const DtPhysicalWorld &physicalWorld, DtVector coordTransformOriginLocal)
	~DtTerrainAccessor ()
bool	checkLineOfSight (DtVector fromLocal, DtVector toLocal) const
bool	checkLineOfFire (DtVector fromLocal, DtVector toLocal) const
double	elevationAtPoint (DtVector pointLocal) const
DtVector	localToTopo (DtVector pointLocal) const
DtVector	topoToLocal (double topoX, double topoY, double heightAboveGround=0) const

Private Attributes
const DtPhysicalWorld &	myPhysicalWorld
DtCoordTransform *	myTopoToLocalX
DtCoordTransform *	myLocalToTopoX
double	myTempOriginHeight

Constructor & Destructor Documentation

DtTerrainAccessor::DtTerrainAccessor	(	const DtPhysicalWorld &	physicalWorld,
		DtVector	coordTransformOriginLocal
	)

DtTerrainAccessor::~DtTerrainAccessor

(

)

Member Function Documentation

bool DtTerrainAccessor::checkLineOfSight	(	DtVector	fromLocal,
		DtVector	toLocal
	)		const

bool DtTerrainAccessor::checkLineOfFire	(	DtVector	fromLocal,
		DtVector	toLocal
	)		const

double DtTerrainAccessor::elevationAtPoint

(

DtVector

pointLocal

)

const

DtVector DtTerrainAccessor::localToTopo

(

DtVector

pointLocal

)

const

DtVector DtTerrainAccessor::topoToLocal	(	double	topoX,
		double	topoY,
		double	heightAboveGround = 0
	)		const

Member Data Documentation

const DtPhysicalWorld& DtTerrainAccessor::myPhysicalWorld

private

DtCoordTransform* DtTerrainAccessor::myTopoToLocalX

private

DtCoordTransform* DtTerrainAccessor::myLocalToTopoX

private

double DtTerrainAccessor::myTempOriginHeight

private

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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/terrainReasoning/terrainAccessor.h