【WPF】WPF中鼠标移出时回到初始状态的动画

悬赏园豆：50 [待解决问题]

WPF中，在实现一个动画还原时，遇到了问题，在我的项目中我希望某个按钮鼠标移入时以动画形式放大至原来的1.5倍，当鼠标移出时再以动画的形式回到原始状态

在C#中定义了一个AnimationHelper类：

    public class AnimationHelper
    {
        /// <summary>
        /// 弹簧式放大
        /// </summary>
        /// <param name="element"></param>
        public static void ScaleEasingInAnimation(FrameworkElement element)
        {
            ScaleTransform scale = new ScaleTransform();
            element.RenderTransform = scale;
            element.RenderTransformOrigin = new Point(0.5, 0.5);//定义圆心位置
            EasingFunctionBase easing = new ElasticEase()
            {
                EasingMode = EasingMode.EaseOut,            //公式
                Oscillations = 5,                           //抖动次数
                Springiness = 10                             //弹簧刚度
            };
            DoubleAnimation scaleAnimation = new DoubleAnimation()
            {
                //From = 1,                                 //起始值
                To = 1.5,                                     //结束值
                EasingFunction = easing,                    //缓动函数
                Duration = new TimeSpan(0, 0, 0, 1, 200),    //动画播放时间
                FillBehavior = FillBehavior.HoldEnd          //动画完成时保持为终值
            };
            AnimationClock clock = scaleAnimation.CreateClock();
            scale.ApplyAnimationClock(ScaleTransform.ScaleXProperty, clock, HandoffBehavior.Compose);
            scale.ApplyAnimationClock(ScaleTransform.ScaleYProperty, clock, HandoffBehavior.Compose);
        }
        /// <summary>
        /// 弹簧式缩小
        /// </summary>
        /// <param name="element"></param>
        public static void ScaleEasingOutAnimation(FrameworkElement element)
        {
            ScaleTransform scale = new ScaleTransform();
            element.RenderTransform = scale;
            element.RenderTransformOrigin = new Point(0.5, 0.5);
            DoubleAnimation ani = new DoubleAnimation()
            {
                To = 1,
                Duration = new TimeSpan(0, 0, 0, 1, 0)
            };
            AnimationClock clock = ani.CreateClock();
            scale.ApplyAnimationClock(ScaleTransform.ScaleXProperty, clock, HandoffBehavior.Compose);
            scale.ApplyAnimationClock(ScaleTransform.ScaleYProperty, clock, HandoffBehavior.Compose);
        }
    }

同时，我还有这样一个UserControl：

    public partial class MyImageButton : UserControl
    {
        public MyImageButton(ImageSource source)
        {
            InitializeComponent();
        }

        private void btn_MouseEnter(object sender, MouseEventArgs e)
        {

            this.Cursor = Cursors.Hand;
            Button btn = (Button)sender;
            AnimationHelper.ScaleEasingInAnimation(btn);
        }
        private void btn_MouseLeave(object sender, MouseEventArgs e)
        {
            Button btn = (Button)sender;
            AnimationHelper.ScaleEasingOutAnimation(btn);
        }
    }