Inheritance diagram for vtHeightField:

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Public Member Functions
void	Initialize (const DRECT &extents, float fMinHeight, float fMaxHeight)
virtual bool	FindAltitudeOnEarth (const DPoint2 &p, float &fAltitude, bool bTrue=false) const =0
bool	ContainsEarthPoint (const DPoint2 &p, bool bInclusive=false) const
DRECT &	GetEarthExtents ()
const DRECT &	GetEarthExtents () const
virtual void	SetEarthExtents (const DRECT &ext)
void	GetHeightExtents (float &fMinHeight, float &fMaxHeight) const
Protected Attributes
float	m_fMinHeight
float	m_fMaxHeight
DRECT	m_EarthExtents

Detailed Description

A heightfield is any collection of surfaces such that, given a horizontal X,Y position, there exists only a single elevation value.

Member Function Documentation

bool vtHeightField::ContainsEarthPoint	(	const DPoint2 &	p,
		bool	bInclusive = `false`
	)		const `[inline]`

Test if a point is within the extents of the grid.

DRECT& vtHeightField::GetEarthExtents ( ) [inline]

Returns the geographic extents of the grid.

void vtHeightField::GetHeightExtents	(	float &	fMinHeight,
		float &	fMaxHeight
	)		const

Gets the minimum and maximum height values. The values are placed in the arguments by reference. You must have first called ComputeHeightExtents.

void vtHeightField::SetEarthExtents ( const DRECT & ext ) [virtual]

Set the geographic extents of the grid.