vtLocalConversion Class Reference

List of all members.

Public Member Functions
void	Setup (LinearUnits units, const DRECT &earthextents)
void	SetOrigin (const DPoint2 &origin)
void	convert_earth_to_local_xz (double ex, double ey, float &x, float &z) const
void	convert_local_xz_to_earth (float x, float z, double &ex, double &ey) const
void	ConvertToEarth (const FPoint3 &world, DPoint3 &earth) const
void	ConvertToEarth (float x, float z, DPoint2 &earth) const
void	ConvertFromEarth (const DPoint2 &earth, float &x, float &z) const
void	ConvertFromEarth (const DPoint3 &earth, FPoint3 &world) const
void	ConvertVectorToEarth (float x, float z, DPoint2 &earth) const
void	ConvertVectorFromEarth (const DPoint2 &earth, float &x, float &z) const
LinearUnits	GetUnits () const
Protected Attributes
LinearUnits	m_units
DPoint2	m_EarthOrigin
DPoint2	m_scale

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Detailed Description

The following 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)

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Member Function Documentation

void vtLocalConversion::ConvertFromEarth	(	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 vtLocalConversion::ConvertFromEarth	(	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 vtLocalConversion::ConvertToEarth	(	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 vtLocalConversion::ConvertToEarth	(	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 vtLocalConversion::ConvertVectorFromEarth	(	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 vtLocalConversion::ConvertVectorToEarth	(	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)