using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Windows.Media.Animation;

namespace WpfApplication1
{
    /// <summary>
    /// Window1.xaml 的交互逻辑
    /// </summary>
    public partial class Window1 : Window
    {
        Ellipse yuan;
        public Window1()
        {
            InitializeComponent();
            yuan = new Ellipse();
            yuan.Fill = new SolidColorBrush(Colors.Red);
            yuan.Width = 30;
            yuan.Height = 30;
            circle.Children.Add(yuan);
            Canvas.SetLeft(yuan, 100);
            Canvas.SetTop(yuan, 100);

        }

        private void circle_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            Point p = e.GetPosition(yuan);
            Storyboard storyboard = new Storyboard();
            DoubleAnimation doubleanimation = new DoubleAnimation(
                Canvas.GetLeft(yuan),
                p.X,
                new Duration(TimeSpan.FromMilliseconds(50)));
            Storyboard.SetTarget(doubleanimation, yuan);
            Storyboard.SetTargetProperty(doubleanimation, new PropertyPath("(Canvas.Left)"));
            storyboard.Children.Add(doubleanimation);
            doubleanimation = new DoubleAnimation(
               Canvas.GetTop(yuan),
               p.Y,
               new Duration(TimeSpan.FromMilliseconds(50)));
            Storyboard.SetTarget(doubleanimation, yuan);
            Storyboard.SetTargetProperty(doubleanimation, new PropertyPath("(Canvas.Top)"));
            storyboard.Children.Add(doubleanimation);
            if (!Resources.Contains("circleAnimation"))
            {
                Resources.Add("circleAnimation", storyboard);
            }
            //动画播放
            storyboard.Begin();

        }
    }
}