#[no_mangle]
pub extern "C" fn meshlite_skeletonmesh_add_bone(
    context: *mut RustContext,
    sklt_id: c_int,
    from_x: c_float,
    from_y: c_float,
    from_z: c_float,
    to_x: c_float,
    to_y: c_float,
    to_z: c_float
) -> c_int