Function gegl_sys::gegl_path_closest_point

pub unsafe extern "C" fn gegl_path_closest_point(
    path: *mut GeglPath,
    x: c_double,
    y: c_double,
    on_path_x: *mut c_double,
    on_path_y: *mut c_double,
    node_pos_before: *mut c_int
) -> c_double