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using System;
using NETGeographicLib;
namespace example_GravityCircle
{
class Program
{
static void Main(string[] args)
{
try {
GravityModel grav = new GravityModel("egm96", "");
double lat = 27.99, lon0 = 86.93, h = 8820; // Mt Everest
{
// Slow method of evaluating the values at several points on a circle of
// latitude.
for (int i = -5; i <= 5; ++i) {
double lon = lon0 + i * 0.2;
double gx, gy, gz;
grav.Gravity(lat, lon, h, out gx, out gy, out gz);
Console.WriteLine(String.Format("{0} {1} {2} {3}", lon, gx, gy, gz));
}
}
{
// Fast method of evaluating the values at several points on a circle of
// latitude using GravityCircle.
GravityCircle circ = grav.Circle(lat, h, GravityModel.Mask.ALL);
for (int i = -5; i <= 5; ++i) {
double lon = lon0 + i * 0.2;
double gx, gy, gz;
circ.Gravity(lon, out gx, out gy, out gz);
Console.WriteLine(String.Format("{0} {1} {2} {3}", lon, gx, gy, gz));
}
}
}
catch (GeographicErr e) {
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
}
}
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