火星坐标转WGS84系坐标

// --- transform_earth_2_mars ---
// ²Î¿¼À´Ô´£ºhttps://on4wp7.codeplex.com/SourceControl/changeset/view/21483#353936
// Krasovsky 1940
//
// a = 6378245.0, 1/f = 298.3
// b = a * (1 - f)
// ee = (a^2 - b^2) / a^2;
const double a = 6378245.0;
const double ee = 0.00669342162296594323;
 
bool transform_sino_out_china(double lat, double lon)
{
if (lon <</span> 72.004 || lon > 137.8347)
return true;
if (lat <</span> 0.8293 || lat > 55.8271)
return true;
return false;
}
 
double transform_earth_2_mars_lat(double x, double y)
{
double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(abs(x));
ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0;
ret += (20.0 * sin(y * M_PI) + 40.0 * sin(y / 3.0 * M_PI)) * 2.0 / 3.0;
ret += (160.0 * sin(y / 12.0 * M_PI) + 320 * sin(y * M_PI / 30.0)) * 2.0 / 3.0;
return ret;
}
 
double transform_earth_2_mars_lng(double x, double y)
{