38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
// Example of using the GeographicLib::LocalCartesian class
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#include <iostream>
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#include <exception>
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#include <cmath>
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#include <GeographicLib/Geocentric.hpp>
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#include <GeographicLib/LocalCartesian.hpp>
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using namespace std;
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using namespace GeographicLib;
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int main() {
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try {
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Geocentric earth(Constants::WGS84_a(), Constants::WGS84_f());
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// Alternatively: const Geocentric& earth = Geocentric::WGS84();
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const double lat0 = 48 + 50/60.0, lon0 = 2 + 20/60.0; // Paris
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LocalCartesian proj(lat0, lon0, 0, earth);
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{
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// Sample forward calculation
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double lat = 50.9, lon = 1.8, h = 0; // Calais
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double x, y, z;
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proj.Forward(lat, lon, h, x, y, z);
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cout << x << " " << y << " " << z << "\n";
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}
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{
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// Sample reverse calculation
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double x = -38e3, y = 230e3, z = -4e3;
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double lat, lon, h;
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proj.Reverse(x, y, z, lat, lon, h);
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cout << lat << " " << lon << " " << h << "\n";
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}
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}
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catch (const exception& e) {
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cerr << "Caught exception: " << e.what() << "\n";
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return 1;
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}
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}
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