pub unsafe extern "C" fn sfcgal_geometry_distance_3d(
geom1: *const sfcgal_geometry_t,
geom2: *const sfcgal_geometry_t,
) -> f64pub unsafe extern "C" fn sfcgal_geometry_distance_3d(
geom1: *const sfcgal_geometry_t,
geom2: *const sfcgal_geometry_t,
) -> f64