public LinkedList <Edge> GenerateVoronoi(List <FortuneSite> sites, double minX, double minY, double maxX, double maxY)
{
MinHeap <FortuneEvent> eventQueue = new MinHeap <FortuneEvent>(5 * sites.Count);
foreach (FortuneSite site in sites)
{
eventQueue.Insert(new FortuneSiteEvent(site));
}
BeachLine beachLine = new BeachLine();
LinkedList <Edge> edges = new LinkedList <Edge>();
HashSet <FortuneCircleEvent> deleted = new HashSet <FortuneCircleEvent>();
while (eventQueue.count != 0)
{
FortuneEvent fortuneEvent = eventQueue.Pop();
if (fortuneEvent is FortuneSiteEvent)
{
beachLine.AddSection((FortuneSiteEvent)fortuneEvent, eventQueue, deleted, edges);
}
else
{
if (deleted.Contains((FortuneCircleEvent)fortuneEvent))
{
deleted.Remove((FortuneCircleEvent)fortuneEvent);
}
else
{
beachLine.RemoveBeachSection((FortuneCircleEvent)fortuneEvent, eventQueue, deleted, edges);
}
}
}
LinkedListNode <Edge> edgeNode = edges.First;
while (edgeNode != null)
{
Edge edge = edgeNode.Value;
LinkedListNode <Edge> nextNode = edgeNode.Next;
if (!ClipEdge(edge, minX, minY, maxX, maxY))
{
edges.Remove(edgeNode);
}
edgeNode = nextNode;
}
return(edges);
}