private void RaiseCircleGestureEvent(CircleGestureEventArgs e)
{
if (CircleGestureDetected != null)
{
CircleGestureDetected(this, e);
Angle = e.Angle;
}
}
private void OnCircleGestureDetected(object sender, CircleGestureEventArgs e)
{
RaiseCircleGestureEvent(e);
}