/usr/share/doc/libgeographic-dev/examples/example-TransverseMercatorExact.cpp is in libgeographic-dev 1.49-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | // Example of using the GeographicLib::TransverseMercatorExact class
#include <iostream>
#include <iomanip>
#include <exception>
#include <GeographicLib/TransverseMercatorExact.hpp>
using namespace std;
using namespace GeographicLib;
int main() {
try {
TransverseMercatorExact proj(Constants::WGS84_a(), Constants::WGS84_f(),
Constants::UTM_k0());
// Alternatively:
// const TransverseMercatorExact& proj = TransverseMercatorExact::UTM();
double lon0 = -75; // Central meridian for UTM zone 18
{
// Sample forward calculation
double lat = 40.3, lon = -74.7; // Princeton, NJ
double x, y;
proj.Forward(lon0, lat, lon, x, y);
cout << x << " " << y << "\n";
}
{
// Sample reverse calculation
double x = 25e3, y = 4461e3;
double lat, lon;
proj.Reverse(lon0, x, y, lat, lon);
cout << lat << " " << lon << "\n";
}
}
catch (const exception& e) {
cerr << "Caught exception: " << e.what() << "\n";
return 1;
}
}
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