rtex (e.g. infinite edges). </td>
          </tr>
          <tr>
            <td style="font-family: Courier New,Courier,monospace;">const
voronoi_edge_type* <span style="font-weight: bold;">prev</span>()
const </td>
            <td>Returns the const pointer
to the CCW prev edge within the corresponding Voronoi cell.<br>
Edges not necessarily share a common vertex (e.g. infinite edges). </td>
          </tr>
          <tr>
            <td style="font-family: Courier New,Courier,monospace;">void
            