Wpf 指定BeginAnimation中UIElement的DependencyProperty

我正在尝试设置一个椭圆的动画，以便在画布上从点a移动到点B

public void AnimateSensor(double x, double y, Ellipse sensor)
    {
        if (!Double.IsNaN(x))
        {
            DoubleAnimation animX = new DoubleAnimation();
            animX.To = x;
            animX.Duration = new Duration(TimeSpan.FromMilliseconds(1000));
            DoubleAnimation animY = new DoubleAnimation();
            animY.To = y;
            animY.Duration = new Duration(TimeSpan.FromMilliseconds(1000));
            TranslateTransform rt = new TranslateTransform();
            sensor.RenderTransform = rt;

            rt.BeginAnimation(sensor.GetValue(Canvas.TopProperty), animX);
            rt.BeginAnimation(sensor.GetValue(Canvas.LeftProperty), animY);
           }
        else
            Console.WriteLine("x or y is NaN");
    }

---

我用一组坐标和一个椭圆调用这个方法，但是我似乎不知道如何在BeginAnimation中指定dependecy值。我尝试使用“sensor.GetValue（Canvas.LeftProperty）”，但它说它是一个对象，需要依赖属性。当我使用'as DependencyProperty'时，它使其为空，当我尝试转换它时，它说您不能从double转换为DependencyProperty

您可以为椭圆的

Canvas.Left

和

Canvas.Top

属性设置动画，而不使用TranslateTransform，如下所示：

sensor.BeginAnimation(Canvas.LeftProperty, animX);
sensor.BeginAnimation(Canvas.TopProperty, animY);

if (!(sensor.RenderTransform is TranslateTransform))
{
    // assign RenderTransform only once
    sensor.RenderTransform = new TranslateTransform();
}

var transform = (TranslateTransform)sensor.RenderTransform;
transform.BeginAnimation(TranslateTransform.XProperty, animX);
transform.BeginAnimation(TranslateTransform.YProperty, animY);

或者TranslateTransform的

X

和

Y

属性，如下所示：

sensor.BeginAnimation(Canvas.LeftProperty, animX);
sensor.BeginAnimation(Canvas.TopProperty, animY);

if (!(sensor.RenderTransform is TranslateTransform))
{
    // assign RenderTransform only once
    sensor.RenderTransform = new TranslateTransform();
}

var transform = (TranslateTransform)sensor.RenderTransform;
transform.BeginAnimation(TranslateTransform.XProperty, animX);
transform.BeginAnimation(TranslateTransform.YProperty, animY);