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flightgear/Lib/Math/geotest.c

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1999-04-05 21:32:32 +00:00
#include <Include/fg_constants.h>
#include <Math/fg_geodesy.h>
#include <stdio.h>
void
main( void )
{
double Lon, Alt, sl_radius;
double geodetic_Lat;
double geocentric_Lat;
Lon = -87.75 * DEG_TO_RAD;
geodetic_Lat = 41.83 * DEG_TO_RAD;
Alt = 1.5; /* km */
printf("Geodetic position = (%.8f, %.8f, %.8f)\n", Lon, geodetic_Lat, Alt);
fgGeodToGeoc( geodetic_Lat, Alt, &sl_radius, &geocentric_Lat );
printf("Geocentric position = (%.8f, %.8f, %.8f)\n", Lon, geocentric_Lat,
sl_radius + Alt);
printf("new sl_radius = %.8f\n", sl_radius);
fgGeocToGeod( geocentric_Lat, sl_radius + Alt, &geodetic_Lat,
&Alt, &sl_radius );
printf("Geodetic position = (%.8f, %.8f, %.8f)\n", Lon, geodetic_Lat, Alt);
printf("new sl_radius = %.8f\n", sl_radius);
}