请帮我写一个WPF 圆圈圆点动画

好的，以下是一个简单的 WPF 圆圈圆点动画示例：

首先，在 XAML 中添加一个 `Canvas` 控件，并在其中添加一个 `Ellipse` 控件作为圆圈，还需要添加一个 `Rectangle` 控件作为圆点。

<Canvas>
    <Ellipse x:Name="circle" Width="100" Height="100" Fill="Red" Canvas.Left="50" Canvas.Top="50"/>
    <Rectangle x:Name="dot" Width="10" Height="10" Fill="Blue" Canvas.Left="95" Canvas.Top="95"/>
</Canvas>

然后，在代码中添加以下动画：

private void Animate()
{
    // 创建圆点动画
    var dotAnimation = new DoubleAnimation
    {
        From = 0,
        To = 90,
        Duration = TimeSpan.FromSeconds(1),
        RepeatBehavior = RepeatBehavior.Forever
    };
    dotAnimation.EasingFunction = new SineEase { EasingMode = EasingMode.EaseInOut };

    Storyboard.SetTarget(dotAnimation, dot);
    Storyboard.SetTargetProperty(dotAnimation, new PropertyPath("(Canvas.Left)"));

    // 创建圆圈动画
    var circleAnimation = new DoubleAnimation
    {
        From = 0,
        To = 360,
        Duration = TimeSpan.FromSeconds(1),
        RepeatBehavior = RepeatBehavior.Forever
    };
    circleAnimation.EasingFunction = new SineEase { EasingMode = EasingMode.EaseInOut };

    Storyboard.SetTarget(circleAnimation, circle);
    Storyboard.SetTargetProperty(circleAnimation, new PropertyPath("(Canvas.Left)"));

    // 创建 Storyboard 并开始动画
    var storyboard = new Storyboard();
    storyboard.Children.Add(dotAnimation);
    storyboard.Children.Add(circleAnimation);
    storyboard.Begin();
}

这个动画会让圆点沿着圆圈运动。你可以根据需要调整控件的大小、颜色、位置和动画参数。