原始GPS坐标，火星坐标以及百度坐标的相互转换

原始到火星

void wgs2gcj(double &lat, double &lon)
{
    double old_lon = lon - 105.0;
    double old_lat = lat - 35.0;
    double dLat = transformLat(old_lon, old_lat);
    double dLon = transformLon(old_lon, old_lat);
    double radLat = lat / 180.0 * pi;
    double magic = sin(radLat);
    magic = 1 - ee * magic * magic;
    double sqrtMagic = sqrt(magic);
    dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
    dLon = (dLon * 180.0) / (a / sqrtMagic * cos(radLat) * pi);

    lat = lat + dLat;
    lon = lon + dLon;
}

火星到百度

void gcj2bd(double &lat, double &lon)
{
    double x = lon, y = lat;
    double z = sqrt(x * x + y * y) + 0.00002 * sin(y * x_pi);
    double theta = atan2(y, x) + 0.000003 * cos(x * x_pi);

    lon = z * cos(theta) + 0.0065;
    lat = z * sin(theta) + 0.006;
}

原始到百度

void wgs2bd(double &lat, double &lon)
{
    wgs2gcj(lat, lon);
    gcj2bd (lat, lon);
}

百度到火星

void bd2gcj(double &lat, double &lon)
{
    double x = lon - 0.0065, y = lat - 0.006;
    double z = sqrt(x * x + y * y) - 0.00002 * sin(y * x_pi);
    double theta = atan2(y, x) - 0.000003 * cos(x * x_pi);

    lon = z * cos(theta);
    lat = z * sin(theta);
}

额，没找到百度直接到原始坐标的，可以逆运算回去吧。。。