openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.

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#pragma once
#include <eigen3/Eigen/Dense>
#define DEG2RAD(x) ((x) * M_PI / 180.0)
#define RAD2DEG(x) ((x) * 180.0 / M_PI)
struct ECEF {
double x, y, z;
Eigen::Vector3d to_vector(){
return Eigen::Vector3d(x, y, z);
}
};
struct NED {
double n, e, d;
Eigen::Vector3d to_vector(){
return Eigen::Vector3d(n, e, d);
}
};
struct Geodetic {
double lat, lon, alt;
bool radians=false;
};
ECEF geodetic2ecef(Geodetic g);
Geodetic ecef2geodetic(ECEF e);
class LocalCoord {
public:
Eigen::Matrix3d ned2ecef_matrix;
Eigen::Matrix3d ecef2ned_matrix;
Eigen::Vector3d init_ecef;
LocalCoord(Geodetic g, ECEF e);
LocalCoord(Geodetic g) : LocalCoord(g, ::geodetic2ecef(g)) {}
LocalCoord(ECEF e) : LocalCoord(::ecef2geodetic(e), e) {}
NED ecef2ned(ECEF e);
ECEF ned2ecef(NED n);
NED geodetic2ned(Geodetic g);
Geodetic ned2geodetic(NED n);
};