er edges are considered to be primary (e.g. curved edge CD, made by
segment KL and point N). Apart from that, each edge can be finite (e.g.
ED) or infinite (e.g. edge starting at point B and going in the east
direction).<br>
      <img src="images/voronoi1.png" alt=""
 style="width: 600px; height: 600px;"><br>
Each Voronoi edge (consider directed edge BA) provides efficient access
to the following primitives:<br>
      <ul>
        <li>Cell the edge belongs to (Voronoi cell P, with source
segment MN)</li>
 