public SimplePolygon(Vector2[] points)
{
if (points.Length < 3)
throw new ArgumentException("Insufficent vertices.");
var face = new Face();
Vertex firstVertex = new Vertex(points[0]);
this.firstEdge = new HalfEdge();
firstEdge.Origin = firstVertex;
firstEdge.Face = face;
face.ConnectedEdge = firstEdge;
var previousEdge = firstEdge;
foreach (var point in points.Skip(1))
{
var edge = new HalfEdge();
edge.Origin = new Vertex(point);
edge.Face = face;
edge.Previous = previousEdge;
previousEdge.Next = edge;
previousEdge = edge;
}
firstEdge.Previous = previousEdge;
previousEdge.Next = firstEdge;
if (!PolygonIsSimpleAndHasSortedVertices())
throw new ArgumentException("Polygon is not simple.");
}
public EventPoint(Vertex vertex, IEnumerable<Segment> correspondingSegments)
{
this.Vertex = vertex;
this.CorrespondingSegments = correspondingSegments;
}
public EventPoint(Vertex vertex)
{
this.Vertex = vertex;
}
public int InsertEvent(Vertex newEventPoint)
{
eventPoints.Add(new EventPoint(newEventPoint));
return eventPoints.Count;
}