internal VisualEdge(EdgeController edgeController, uint startSlotId, uint endSlotId, bool isImplicit) { this.edgeController = edgeController; if (isImplicit) { this.EdgeType = EdgeType.ImplicitConnection; } else { this.EdgeType = EdgeType.ExplicitConnection; } this.version = VisualEdge.Version.Current; this.StartSlotId = startSlotId; this.EndSlotId = endSlotId; // Generate new ID for this visual edge. GraphController graphController = edgeController.GetGraphController(); IdGenerator idGenerator = graphController.GetIdGenerator(); this.EdgeId = idGenerator.GetNextId(ComponentType.Edge); controlPoints.Add(new Point()); controlPoints.Add(new Point()); controlPoints.Add(new Point()); controlPoints.Add(new Point()); GraphController controller = edgeController.GetGraphController(); Slot startSlot = controller.GetSlot(this.StartSlotId) as Slot; Slot endSlot = controller.GetSlot(this.EndSlotId) as Slot; if (startSlot != null && endSlot != null) { Point startPoint = startSlot.GetPosition(); Point endPoint = endSlot.GetPosition(); UpdateControlPoint(startPoint, endPoint, startSlot.SlotType != SlotType.Output); } else { throw new ArgumentNullException("startSlot or endSlot"); } }