LocalCS Class Reference

Public Member Functions
void	Setup (LinearUnits units, const DRECT &earthextents)
void	Setup (LinearUnits units, const DPoint2 &origin)
void	LocalToEarth (float x, float z, double &ex, double &ey) const
void	LocalToEarth (float x, float z, DPoint2 &earth) const
void	LocalToEarth (const FPoint3 &world, DPoint3 &earth) const
void	EarthToLocal (double ex, double ey, float &x, float &z) const
void	EarthToLocal (const DPoint2 &earth, float &x, float &z) const
void	EarthToLocal (const DPoint3 &earth, FPoint3 &world) const
void	EarthToLocal (const DRECT &earth, FRECT &world) const
void	VectorLocalToEarth (float x, float z, DPoint2 &earth) const
void	VectorEarthToLocal (const DPoint2 &earth, float &x, float &z) const
LinearUnits	GetUnits () const

Protected Attributes
LinearUnits	m_Units
DPoint2	m_EarthOrigin
DPoint2	m_Scale

Detailed Description

This class represents a mapping between real earth coordinates (geographic or projected, elevation in meters) and a local, meters-based 3D coordinate system, which uses the right-handed OpenGL axis convention (X right, Y up, Z backwards)

Member Function Documentation

void LocalCS::EarthToLocal	(	const DPoint2 &	earth,
		float &	x,
		float &	z
	)		const

Convert from earth coodinates (map coordinates, altitude in meters) to the coordinate system of the virtual world (x,y,z)

void LocalCS::EarthToLocal	(	const DPoint3 &	earth,
		FPoint3 &	world
	)		const

Convert from earth coodinates (map coordinates, altitude in meters) to the coordinate system of the virtual world (x,y,z)

void LocalCS::EarthToLocal	(	const DRECT &	earth,
		FRECT &	world
	)		const

Convert from earth coodinates (map coordinates, altitude in meters) to the coordinate system of the virtual world (x,y,z)

void LocalCS::LocalToEarth	(	float	x,
		float	z,
		DPoint2 &	earth
	)		const

Convert from the coordinate system of the virtual world (x,y,z) to actual earth coodinates (map coordinates, altitude in meters)

void LocalCS::LocalToEarth	(	const FPoint3 &	world,
		DPoint3 &	earth
	)		const

Convert from the coordinate system of the virtual world (x,y,z) to actual earth coodinates (map coordinates, altitude in meters)

void LocalCS::VectorEarthToLocal	(	const DPoint2 &	earth,
		float &	x,
		float &	z
	)		const

Convert a vector from earth coodinates (map coordinates, altitude in meters) to the coordinate system of the virtual world (x,y,z)

void LocalCS::VectorLocalToEarth	(	float	x,
		float	z,
		DPoint2 &	earth
	)		const

Convert a vector from the coordinate system of the virtual world (x,y,z) to actual earth coodinates (map coordinates, altitude in meters)