cOsgCanvas::EarthViewpoint Struct Reference

Description

Defines a viewpoint in 3D space with geographical coordinates, for osgEarth-style viewing.

The EarthViewpoint is defined by a "focal point" on (or above) the Earth's surface (longitude, latitude, altitude), and two angles (heading, pitch) and a distance (range). The camera always looks at the "focal point", from a distance defined by range, and at an angle defined by heading and pitch.

Public Member Functions
Methods.
	EarthViewpoint ()
	EarthViewpoint (double longitude, double latitude, double altitude, double heading, double pitch, double range)

Public Attributes
Data members.
double	longitude = 0
double	latitude = 0
double	altitude = 0
	The location of the "focal point". More...
double	heading = 0
double	pitch = 0
double	range = 0
	The distance and angle of the camera. More...
bool	valid = false
	The validity of the data. If false, the other members should not be read. More...

Constructor & Destructor Documentation

EarthViewpoint()

EarthViewpoint ( double  longitude, double  latitude, double  altitude, double  heading, double  pitch, double  range  )

inline

Note the order of the first two parameters: longitude comes first, latitude is next. It is kept this way to remain consistent with osgEarth::Viewpoint, and to resemble the directions in the X:Y:Z coordinate systems. They are in reverse order almost everywhere else, so always pay attention to whether you need to flip them around or not.

Member Data Documentation

altitude

double altitude = 0

The location of the "focal point".

range

double range = 0

The distance and angle of the camera.

valid

bool valid = false

The validity of the data. If false, the other members should not be read.

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The documentation for this struct was generated from the following file:

• cosgcanvas.h