pub unsafe extern "C" fn graphene_sphere_init(
s: *mut graphene_sphere_t,
center: *const graphene_point3d_t,
radius: c_float,
) -> *mut graphene_sphere_t
pub unsafe extern "C" fn graphene_sphere_init(
s: *mut graphene_sphere_t,
center: *const graphene_point3d_t,
radius: c_float,
) -> *mut graphene_sphere_t