public bool IsCurrentLink(Node currentNode)
{
if (!IsTwoSided)
return ((Node1 == currentNode) && !Node2.Visited);
else
return (((Node1 == currentNode) && !Node2.Visited) || ((Node2 == currentNode) && !Node1.Visited));
}
public NodeDialog(Action<Node> callback, DialogMode dialogMode, Node node = null)
{
this.InitializeComponent();
_callback = callback;
switch (dialogMode)
{
case DialogMode.CreationMode:
Title = "Add new node";
PrimaryButtonText = "Create";
_node = new Node();
break;
case DialogMode.EditMode:
Title = "Edit node";
PrimaryButtonText = "Save";
_node = node;
break;
default:
throw new ArgumentException("Not supported", "dialogMode");
}
}
private void DrawNode(CanvasDrawingSession ds, Node node)
{
ds.FillCircle(node.Position, hitTestRadius, backgroundColor);
ds.DrawCircle(node.Position, hitTestRadius, foregroundColor, 4);
ds.DrawText(node.Name, node.Position, foregroundColor, textFormat);
}
private void Canvas_PointerReleased(object sender, PointerRoutedEventArgs e)
{
if (activeDrag != null)
{
activeDrag = null;
Canvas.Invalidate();
}
}
private void Canvas_PointerPressed(object sender, PointerRoutedEventArgs e)
{
if (Nodes.Count == 0)
{
return;
}
var pointerPos = e.GetCurrentPoint(Canvas).Position.ToVector2();
var targetDistances = (from node in Nodes
select Vector2.Distance(pointerPos, node.Position)).ToList();
int closestTarget = targetDistances.IndexOf(targetDistances.Min());
if (targetDistances[closestTarget] <= hitTestRadius)
{
activeDrag = Nodes[closestTarget];
dragOffset = pointerPos - Nodes[closestTarget].Position;
Canvas.Invalidate();
}
}