lue to coordinate indicated by
orientation_2d of vertices of an object that models polygon_45 .</td>
          </tr>
          <tr>
            <td width="586"><font face="Courier New">template
&lt;typename polygon_type, typename point_type&gt;<br />
polygon_type&amp; <b>convolve</b>(polygon_type&amp; polygon,<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
const point_type&amp; point)</font></td>
            <td>Conv