public void DeleteEdge(Edge edge)
{
if (!edges.Contains(edge))
{
return;
}
RemoveRelation(edge);
var splitVertex = edge.GetSplitVertex();
foreach (var e in edges)
{
if (e.End == edge.Begin)
{
e.End = splitVertex;
}
else if (e.Begin == edge.End)
{
e.Begin = splitVertex;
}
}
vertices.Remove(edge.Begin);
vertices.Remove(edge.End);
vertices.Add(splitVertex);
edges.Remove(edge);
}
public bool SplitEdge(Edge edge)
{
if (edge.Length < DrawingConstants.MinimumSplitLength)
{
return(false);
}
if (!edges.Contains(edge))
{
return(false);
}
RemoveRelation(edge);
var splitVertex = edge.GetSplitVertex();
lastProcessedVertex = edge.End;
var secondEdge = new Edge(splitVertex, edge.End, this);
edge.End = splitVertex;
edges.Insert(edges.IndexOf(edge) + 1, secondEdge);
vertices.Insert(vertices.IndexOf(edge.Begin) + 1, splitVertex);
return(true);
}
private static void RotateNeighboursToPerpendicular(Edge first, Edge second)
{
var temp = new Edge(first.Begin, second.End);
var middle = temp.GetSplitVertex();
var oldPos = first.End.Position;
first.End.Position = middle.Position;
var direction = first.GetDirection();
var positionFirst = first.End.Position.Add(new Point(-(int)Math.Round(direction.Y), (int)Math.Round(direction.X)));
var positionSecond = first.End.Position.Add(new Point((int)Math.Round(direction.Y), -(int)Math.Round(direction.X)));
first.End.Position = positionFirst.DistanceSquaredTo(oldPos) > positionSecond.DistanceSquaredTo(oldPos) ? positionSecond : positionFirst;
}