/// <summary>
/// This is a callback method that triggers OnEllipseCenterChanged method of
/// the MyEllipse object whose EllipseCenter property got changed.
/// </summary>
/// <param name="obj"></param>
/// <param name="e"></param>
static void MyHandler(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
MyEllipse ellipse = obj as MyEllipse;
if (ellipse != null)
{
ellipse.OnEllipseCenterChanged(obj, e);
}
}
/// <summary>
/// This method is triggered by the callback method of EllipseCenterProperty
/// property. It updates the Center property of the EllipseGeometry object to
/// update UI,then it fires EllipseCenterChanged event.
/// </summary>
/// <param name="obj"></param>
/// <param name="e"></param>
void OnEllipseCenterChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
MyEllipse ellipse = obj as MyEllipse;
if (ellipse != null)
{
ellipse.MyAnimatedEllipseGeometry.Center = ellipse.EllipseCenter;
}
if (_mydelegate != null)
{
_mydelegate(obj, e);
}
}