public List <Circle> Circles()
{
List <Circle> list = new List <Circle>();
for (int i = 0; i < _sites.Count; i++)
{
Site site = _sites[i];
float radius = 0f;
Edge edge = site.NearestEdge();
if (!edge.IsPartOfConvexHull())
{
radius = edge.SitesDistance() * 0.5f;
}
list.Add(new Circle(site.x, site.y, radius));
}
return(list);
}