/// <summary> /// Creates Core vertex and related Visual vertex. /// </summary> /// <param name="x">X coordinate.</param> /// <param name="y">Y coordinate.</param> /// <param name="label">label of vertex</param> public Vertex CreateVertex(double x, double y, string label = "") { Vertex v = new Vertex(x, y, label); Vertices.Add(v); visual.CreateVisualVertex(v); return(v); }