void MoveHighlightNode(Point p)
{
if (Network != null)
{
WirelessNetworkNode selNode = null;
Point selPoint = new Point();
double minDistance = double.PositiveInfinity;
foreach (var node in Network.Nodes)
{
Point np = new Point(node.X, node.Y);
double dsquared = (p - np).LengthSquared;
if (dsquared < minDistance)
{
selNode = node;
selPoint = np;
minDistance = dsquared;
}
}
double snapDistance = 20; // pixels
snapDistance = Math.Pow(NetworkControl.ScreenToLocal(snapDistance), 2);
if (minDistance < snapDistance)
{
SelectedNode = selNode;
p = selPoint;
}
else
{
SelectedNode = null;
}
}
NetworkControl.SetUserCursor(p);
}
private void NetworkControl_MouseMove(object sender, MouseEventArgs e)
{
Point p = e.GetPosition(NetworkControl);
p = NetworkControl.ScreenToLocal(p);
ActionContext c = GetActionContext();
c?.MouseMove?.Invoke(p);
}
private void NetworkControl_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Point p = e.GetPosition(NetworkControl);
p = NetworkControl.ScreenToLocal(p);
ActionContext c = GetActionContext();
c?.MouseDown?.Invoke(p);
}
