-void azi_ele_to_cart (double azi, double ele, double& x, double& y, double& z);
-void cart_to_azi_ele (double x, double y, double z, double& azi, double& ele);
+LIBPBD_API void spherical_to_cartesian (double azi, double ele, double len, double& x, double& y, double& z);
+LIBPBD_API void cartesian_to_spherical (double x, double y, double z, double& azi, double& ele, double& len);