public override void TouchTap(TouchPoint t)
{
if (HandleButtons(t)) return;
Point a = t.ToPoint();
Canvas.Source = currentColor;
Canvas.FillCircle(a, 2);
foreach (var b in nodes)
{
var v = a - b.pos;
const double DISTANCE_LIMIT = 200;
if (v.Length < DISTANCE_LIMIT)
{
Canvas.Source = new Color(currentColor.Red, currentColor.Green, currentColor.Blue, (1 - (v.Length / DISTANCE_LIMIT)) * .5);
Canvas.DrawLine(a, b.pos);
}
}
nodes.Add(new Node(a));
}
