public TouchEffect(Grid self, Trace t, double minRange)
{
center = t.Center;
InputDevice d = null;
MainBall = new Ellipse {
Fill = DefaultBrush,
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
Height = t.Radius * 2,
Width = t.Radius * 2,
Margin = new Thickness {
Left = t.Center.X - t.Radius, Top = t.Center.Y - t.Radius
}
};
Ball = new Ellipse {
Fill = DefaultBrush,
Width = t.Radius,
Height = t.Radius,
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
};
Line = new Line {
StrokeThickness = t.Radius / 11,
HorizontalAlignment = HorizontalAlignment.Left,
Stroke = DefaultBrush,
VerticalAlignment = VerticalAlignment.Top,
IsHitTestVisible = false
};
EventHandler <TouchEventArgs> start = (s, e) => {
if (Disabled || d != null)
{
return;
}
d = e.Device;
MoveTo(e.GetTouchPoint(self).Position);
t.Released = false;
var sc = RandomColor();
Ball.Fill = MainBall.Fill = new RadialGradientBrush(sc);
Line.Stroke = new LinearGradientBrush(sc);
ReadyToMove?.Invoke(t.Clone());
};
MainBall.TouchDown += start;
Ball.TouchDown += start;
Line.X1 = t.Center.X;
Line.Y1 = t.Center.Y;
MoveTo(t.Center);
self.Children.Add(Line);
self.Children.Add(Ball);
self.Children.Add(MainBall);
Func <TouchEventArgs, bool> tryMove = e => {
if (e.Device != d)
{
return(false);
}
var to = e.GetTouchPoint(self).Position;
t.Direction = to - t.Center;
MoveTo(to);
return(true);
};
self.TouchMove += (s, e) => {
if (tryMove(e))
{
Moving?.Invoke(t.Clone());
}
};
self.TouchLeave += (s, e) => {
if (!tryMove(e))
{
return;
}
d = null;
t.Released = true;
if (t.Direction.Length < minRange)
{
t.Direction = new Vector();
Reset();
}
else
{
StopMoving?.Invoke(t.Clone());
}
};
}
protected void StopMovingMethod(object?o)
{
Velocity = new THUnity2D.Vector(Velocity.angle, 0);
StopMoving?.Invoke(o);
}
