#include <HeightField.h>

Inheritance diagram for vtHeightField3d:

Public Member Functions
void	Initialize (const LinearUnits units, const DRECT &earthextents, float fMinHeight, float fMaxHeight)

virtual void	SetEarthExtents (const DRECT &ext)

virtual bool	FindAltitudeAtPoint (const FPoint3 &p3, float &fAltitude, bool bTrue=false, int iCultureFlags=0, FPoint3 *vNormal=NULL) const =0

virtual bool	CastRayToSurface (const FPoint3 &point, const FPoint3 &dir, FPoint3 &result) const =0
	Find the intersection point of a ray with the heightfield.

int	PointIsAboveTerrain (const FPoint3 &p) const

bool	ConvertEarthToSurfacePoint (const DPoint2 &epos, FPoint3 &p3, int iCultureFlags=0, bool bTrue=false)

bool	ContainsWorldPoint (float x, float z)

void	GetCenter (FPoint3 &center)

void	SetCulture (CultureExtension *ext)

Public Member Functions inherited from vtHeightField
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

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

Public Attributes
FRECT	m_WorldExtents

vtLocalConversion	m_Conversion

Protected Member Functions
void	UpdateWorldExtents ()

Protected Attributes
float	m_fDiagonalLength

CultureExtension *	m_pCulture

Protected Attributes inherited from vtHeightField
float	m_fMinHeight

float	m_fMaxHeight

DRECT	m_EarthExtents

Detailed Description

This class extents vtHeightField with the abilty to operate in 'world' coordinates, that is, an artificial meters-based 3D coordinate system which is much better suited for many tasks than trying to operate directly on the raw 2D 'earth' coordinates.

Member Function Documentation

bool vtHeightField3d::ContainsWorldPoint	(	float	x,
		float	z
	)

Tests whether a given point is within the current terrain

bool vtHeightField3d::ConvertEarthToSurfacePoint	(	const DPoint2 &	epos,
		FPoint3 &	p3,
		int	iCultureFlags = `0`,
		bool	bTrue = `false`
	)

Converts a earth coordinate (project or geographic) to a world coordinate on the surface of the heightfield.

virtual bool vtHeightField3d::FindAltitudeAtPoint	(	const FPoint3 &	p3,
		float &	fAltitude,
		bool	bTrue = `false`,
		int	iCultureFlags = `0`,
		FPoint3 *	vNormal = `NULL`
	)		const

pure virtual

Given a point in world coordinates, determine the elevation at that point.

Parameters

p3	The point to test. Only the X and Z values are used.
fAltitude	The resulting elevation at that point, by reference.
bTrue	True to test true elevation. False to test the displayed elevation (possibly exaggerated.)
iCultureFlags	Pass 0 to test only the heightfield itself, non-zero to test any culture objects which may be sitting on the heightfield. Values include: CE_STRUCTURES Test structures on the ground. CE_ROADS Test roads on the ground. CE_ALL Test everything on the ground.
vNormal	If you supply a pointer to a vector, it will be set to the upward-pointing surface normal at the ground point.

Returns: true if successful, false if there was nothing found at that point.

Implemented in vtElevationGrid, vtTin, vtTiledGeom, vtDynTerrainGeom, vtExternalHeightField3d, and vtTin3d.

int vtHeightField3d::PointIsAboveTerrain ( const FPoint3 & p) const

Returns: 0 if below terrain, 1 if above terrain, -1 if off terrain.

void vtHeightField3d::SetEarthExtents ( const DRECT & ext)

virtual

Set the geographic extents of the grid.

Reimplemented from vtHeightField.

Reimplemented in vtHeightFieldGrid3d.

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

D:/job/3kb/gelistirme/umasoft/vtp-src/VTP/TerrainSDK/vtdata/HeightField.h
D:/job/3kb/gelistirme/umasoft/vtp-src/VTP/TerrainSDK/vtdata/HeightField.cpp

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation