dotnet/examples/ManagedCPP/example-RhumbLine.cpp

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using namespace System;
using namespace NETGeographicLib;
 
int main(array<System::String ^> ^/*args*/)
{
  try {
    // Print waypoints between JFK and SIN
    Rhumb^ rhumb = gcnew Rhumb(Constants::WGS84::MajorRadius, Constants::WGS84::Flattening, true);
    // Alternatively: const Rhumb& rhumb = Rhumb::WGS84();
    double
      lat1 = 40.640, lon1 = -73.779, // JFK
      lat2 =  1.359, lon2 = 103.989; // SIN
    double s12, azi12;
    rhumb->Inverse(lat1, lon1, lat2, lon2, s12, azi12);
    RhumbLine^ line = rhumb->Line(lat1, lon1, azi12);
    // Alternatively
    // const GeographicLib::RhumbLine line = rhumb.Line(lat1, lon1, azi1);
    double ds0 = 500e3;         // Nominal distance between points = 500 km
    int num = int(Math::Ceiling(s12 / ds0)); // The number of intervals
    {
      // Use intervals of equal length
      double ds = s12 / num;
      for (int i = 0; i <= num; ++i) {
        double lat, lon;
        line->Position(i * ds, lat, lon);
        Console::WriteLine( "{0} {1} {2}", i, lat, lon );
      }
    }
  }
  catch (GeographicErr^ e) {
      Console::WriteLine(String::Format("Caught exception: {0}", e->Message));
      return -1;
  }
  return 0;
}