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using System;
using NETGeographicLib;
namespace example_GeodesicLine
{
class Program
{
static void Main(string[] args)
{
try
{
// Print waypoints between JFK and SIN
Geodesic geod = new Geodesic(); // WGS84
double
lat1 = 40.640, lon1 = -73.779, // JFK
lat2 = 1.359, lon2 = 103.989; // SIN
double s12, azi1, azi2,
a12 = geod.Inverse(lat1, lon1, lat2, lon2, out s12, out azi1, out azi2);
GeodesicLine line = new GeodesicLine(geod, lat1, lon1, azi1, Mask.ALL);
// Alternatively GeodesicLine line = geod.Line(lat1, lon1, azi1, Mask.ALL);
double ds = 500e3; // Nominal distance between points = 500 km
int num = (int)(Math.Ceiling(s12 / ds)); // The number of intervals
{
// Use intervals of equal length
ds = s12 / num;
for (int i = 0; i <= num; ++i)
{
double lat, lon;
line.Position(i * ds, out lat, out lon);
Console.WriteLine(String.Format("i: {0} Latitude: {1} Longitude: {2}", i, lat, lon));
}
}
{
// Slightly faster, use intervals of equal arc length
double da = a12 / num;
for (int i = 0; i <= num; ++i)
{
double lat, lon;
line.ArcPosition(i * da, out lat, out lon);
Console.WriteLine(String.Format("i: {0} Latitude: {1} Longitude: {2}", i, lat, lon));
}
}
}
catch (GeographicErr e)
{
Console.WriteLine(String.Format("Caught exception: {0}", e.Message));
}
}
}
}
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