public void DeleteVertex(Vertex vertex)
{
if (Vertices.Count <= 3)
{
return;
}
var prevVertex = vertex.Edges[0].Vertices[0];
var nextVertex = vertex.Edges[1].Vertices[1];
var prevEdge = vertex.Edges[0];
var nextEdge = vertex.Edges[1];
_window.DrawPoints(vertex.Edges[0].Points, DefaultColor);
_window.DrawPoints(vertex.Edges[1].Points, DefaultColor);
_window.DrawDot(vertex.Point, DefaultColor);
var newEdgePoints = GetLine(nextVertex.Point.X, nextVertex.Point.Y, prevVertex.Point.X, prevVertex.Point.Y);
var maxEdgeId = Edges.Select(e => e.Id).Max();
var newEdge = new Edge(maxEdgeId + 1, newEdgePoints);
prevVertex.Edges[1] = nextVertex.Edges[0] = newEdge;
newEdge.Vertices[0] = prevVertex;
newEdge.Vertices[1] = nextVertex;
Edges.Add(newEdge);
Vertices.Remove(vertex);
Edges.Remove(prevEdge);
Edges.Remove(nextEdge);
ParallelPairs.RemoveAll(pair => pair.Vertices.Contains(vertex.Id));
_window.RedrawAll();
}
public void AddVertexOnEdge(Point edgePoint, Edge edge)
{
_window.DrawPoints(edge.Points, DefaultColor);
ParallelPairs.RemoveAll(pair => pair.Edges.Contains(edge.Id));
var prevVertex = edge.Vertices[0];
var nextVertex = edge.Vertices[1];
var maxVertexId = Vertices.Select(v => v.Id).Max();
var maxEdgeId = Edges.Select(e => e.Id).Max();
var prevEdgePoints = GetLine(edgePoint.X, edgePoint.Y, prevVertex.Point.X, prevVertex.Point.Y);
var nextEdgePoints = GetLine(edgePoint.X, edgePoint.Y, nextVertex.Point.X, nextVertex.Point.Y);
var newVertex = new Vertex(maxVertexId + 1, edgePoint);
var newPrevEdge = new Edge(maxEdgeId + 1, prevEdgePoints);
var newNextEdge = new Edge(maxEdgeId + 2, nextEdgePoints);
newVertex.Edges[0] = newPrevEdge;
newVertex.Edges[1] = newNextEdge;
newPrevEdge.Vertices[0] = prevVertex;
newPrevEdge.Vertices[1] = newVertex;
newNextEdge.Vertices[0] = newVertex;
newNextEdge.Vertices[1] = nextVertex;
prevVertex.Edges[1] = newPrevEdge;
nextVertex.Edges[0] = newNextEdge;
Edges.Remove(edge);
Edges.Add(newPrevEdge);
Edges.Add(newNextEdge);
Vertices.Add(newVertex);
_window.RedrawAll();
}
public void DeleteEdgeRelation(Edge edge)
{
ParallelPairs.RemoveAll(pair => pair.Edges.Contains(edge.Id));
_window.RedrawAll();
}