sc_earth_elevation_square Class Reference

An object used internally to manage data from a single DEM file. More...

List of all members.

Public Member Functions
	sc_earth_elevation_square (int lat, int lon, const char *pathToDemFiles)
	constructor
	~sc_earth_elevation_square ()
	destructor
double	elevationForLatLon (double lat, double lon)
bool	hasLandInGridSquare (double lat, double lon, ElevationPrecision gridSize)

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Detailed Description

sc_earth_elevation_square is an object used internally to manage data from a single DEM file

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Member Function Documentation

double sc_earth_elevation_square::elevationForLatLon	(	double	lat,
		double	lon
	)

Parameters:

lat	latitude (degrees -90 to 90)
lon	longitude (degrees -180 to 180)

Returns:

approximate land elevation in km for the given lat/lon (degrees)

References kDegreesPerPixel.

Referenced by sc_earth_elevation::elevationForLatLon(), and hasLandInGridSquare().

bool sc_earth_elevation_square::hasLandInGridSquare	(	double	lat,
		double	lon,
		ElevationPrecision	gridSize
	)

Parameters:

lat	latitude (degrees -90 to 90)
lon	longitude (degrees -180 to 180)
gridSize	size of grid square to analyze

Returns:

true if there is any land in the grid square containing the given lat/lon (degrees)

References elevationForLatLon(), and kDegreesPerPixel.

Referenced by sc_earth_elevation::hasLandInGridSquare().