35903e4c4777564a86a0f520b" class="m-doc">bn::<wbr />nullopt</a> otherwise.</td>
                </tr>
              </tfoot>
            </table>
<p>The deltas are not copied but referenced, so they should outlive the <a href="classbn_1_1sprite__position__hbe__ptr.html" class="m-doc">sprite_<wbr />position_<wbr />hbe_<wbr />ptr</a> to avoid dangling references.</p>
          </div></section>
          <section class="m-doc-details" id="a784bbb189df04004ec0e1a5488ae98fa"><div>
            <h3>
              