旋转动画 sl解决方案

旋转动画 sl

C# code

        public Rotate()        {            InitializeComponent();            Rectangle r = new Rectangle();            r.Width = 10;            r.Height = 50;            r.Fill = new SolidColorBrush(Colors.Red);            Canvas.SetLeft(r, 100);            Canvas.SetTop(r, 100);            RotateTransform rt = new RotateTransform();            rt.CenterX = 0;            rt.CenterY = 0;            rt.Angle = 90;            r.RenderTransform = rt;            LayoutRoot.Background = new SolidColorBrush(Colors.Gray);            LayoutRoot.Children.Add(r);            Rectangle r1 = new Rectangle();            r1.Width = 10;            r1.Height = 50;            r1.Fill = new SolidColorBrush(Colors.Blue);            Canvas.SetLeft(r1, 100);            Canvas.SetTop(r1, 100);            LayoutRoot.Children.Add(r1);            LayoutRoot.MouseLeftButtonDown += new MouseButtonEventHandler(Mouse_Left_Down);        }        protected void Mouse_Left_Down(object sender, EventArgs e)        {            Rectangle r=(Rectangle)LayoutRoot.Children[0];            Storyboard sb = new Storyboard();            DoubleAnimation da = new DoubleAnimation();            da.From = ((RotateTransform)(r.RenderTransform)).Angle;            da.To = 360;            da.Duration = new Duration(TimeSpan.FromMilliseconds(1000));            Storyboard.SetTarget(da, r);            //下面的属性路径不知道怎么写，好像就是这里有问题            Storyboard.SetTargetProperty(da, new PropertyPath(RotateTransform.AngleProperty));            sb.Children.Add(da);            sb.Begin();        }

C# code

   Button myButton;        void MainPage_Loaded(object sender, RoutedEventArgs e)        {            myButton = new Button();            myButton.Height = 25;            myButton.Width = 100;            myButton.Content = "Click me";            //myButton.RenderTransformOrigin = new Point(10,10);            ScaleTransform myScTransform = new ScaleTransform();            TransformGroup myTransGroup = new TransformGroup();    //要在后面的代码中使用必须先进行注册            myTransGroup.Children.Add(myScTransform);            myButton.RenderTransform = myTransGroup;            myButton.Click += new RoutedEventHandler(myButton_Click);            LayoutRoot.Children.Add(myButton);        }        void myButton_Click(object sender, RoutedEventArgs e)        {            Storyboard story = new Storyboard();            DoubleAnimation yAnimation = new DoubleAnimation();            yAnimation.From = 0.5;            yAnimation.To = 1.0;            yAnimation.Duration = new Duration(TimeSpanFrom5));           ScaleTransform transY = (ScaleTransform)((TransformGroup)myButton.RenderTransform).Children[0]; //找到你注册的属性            Storyboard.SetTarget(yAnimation, transY);            Storyboard.SetTargetProperty(yAnimation, new PropertyPath(ScaleTransform.ScaleYProperty));                        story.Children.Add(yAnimation);            story.Begin();        }
[解决办法]
C# code
protected void Mouse_Left_Down(object sender, EventArgs e){TransformGroup group = new TransformGroup( );RotateTransform rotate = new RotateTransform( );  //旋转group.Children.Add( rotate );this.btn2.RenderTransform = group;//确定中心点this.btn2.RenderTransformOrigin = new Point( 0.5 , 0.5 );//创建关键帧DoubleAnimationUsingKeyFrames angle = new DoubleAnimationUsingKeyFrames( );//创建各个帧的动画效果SplineDoubleKeyFrame spTranslate = new SplineDoubleKeyFrame( 180 , KeyTime.FromTimeSpan( new TimeSpan( 0 , 0 , 0 , 0 , 800 ) ) , new KeySpline( 0 , 0 , 1 , 1 ) );//将单独的帧插入到关键帧中angle.KeyFrames.Add( spTranslate );//定义故事版Storyboard story = new Storyboard( );//将关键帧放入控件中Storyboard.SetTarget( angle , this.btn2 );//定义动画类型------此处就是你说的路径，children后面的[0]旋转插入到group的位置Storyboard.SetTargetProperty( angle , new PropertyPath( "(Button.RenderTransform).(TransformGroup.Children)[0].(RotateTransform.Angle)" ) );//将关键帧加入故事版story.Children.Add( angle );//运行故事版story.Begin( );}