Wpf一个简单的物体移动动画

<Window x:Class="Wpfdemo1.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded" MouseLeftButtonDown="Window_MouseLeftButtonDown">    <Canvas x:Name="body">                            </Canvas></Window>

/// <summary>    /// MainWindow.xaml 的交互逻辑    /// </summary>    public partial class MainWindow : Window    {        Ellipse ell;        public MainWindow()        {            InitializeComponent();            ell = new Ellipse();            ell.Fill = new SolidColorBrush(Colors.Red);            ell.Width = 50;            ell.Height = 50;            body.Children.Add(ell);            Canvas.SetLeft(ell, 100);            Canvas.SetTop(ell,100);        }        private void Window_Loaded(object sender, RoutedEventArgs e)        {                    }        private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)        {            moveTo(e.GetPosition(body));        }        private void moveTo(Point deskPoint)        {            //Point p = e.GetPosition(body);            Point curPoint = new Point();            curPoint.X = Canvas.GetLeft(ell);            curPoint.Y = Canvas.GetTop(ell);            double _s = System.Math.Sqrt(Math.Pow((deskPoint.X - curPoint.X), 2) + Math.Pow((deskPoint.Y - curPoint.Y), 2));            double _secNumber = (_s / 1000) * 500;            Storyboard storyboard = new Storyboard();            //创建X轴方向动画            DoubleAnimation doubleAnimation = new DoubleAnimation(              Canvas.GetLeft(ell),              deskPoint.X,              new Duration(TimeSpan.FromMilliseconds(_secNumber))            );            Storyboard.SetTarget(doubleAnimation, ell);            Storyboard.SetTargetProperty(doubleAnimation, new PropertyPath("(Canvas.Left)"));            storyboard.Children.Add(doubleAnimation);            //创建Y轴方向动画            doubleAnimation = new DoubleAnimation(              Canvas.GetTop(ell),              deskPoint.Y,              new Duration(TimeSpan.FromMilliseconds(_secNumber))            );            Storyboard.SetTarget(doubleAnimation, ell);            Storyboard.SetTargetProperty(doubleAnimation, new PropertyPath("(Canvas.Top)"));            storyboard.Children.Add(doubleAnimation);            //动画播放            storyboard.Begin();        }    }

通过动画析storyboard实现元素移动功能。