DoubleAnimation 创建动画问题

adonis_net 2011-05-11 03:21:53

步骤1：创建一个Rectangle.
代码:

//初始化bullet

        private void bulletInit(string bulletType)

        {



            rect = new Rectangle();

            var imageBrush = new ImageBrush();

            imageBrush.Stretch = Stretch.None;

            imageBrush.AlignmentX = AlignmentX.Left;

            imageBrush.AlignmentY = AlignmentY.Top;

            switch (bulletType)

            {

                case "green":

                     imageBrush.ImageSource = new BitmapImage(new Uri("/SLADdemo;component/" + bullet[0], UriKind.Relative));

                     break;

                case "ice":

                     imageBrush.ImageSource = new BitmapImage(new Uri("/SLADdemo;component/" + bullet[1], UriKind.Relative));

                     break;

                case "fire":

                     imageBrush.ImageSource = new BitmapImage(new Uri("/SLADdemo;component/" + bullet[2], UriKind.Relative));

                     break;

            }

           

            rect.Fill = imageBrush;

            rect.Width = 47;

            rect.Height = 47;

            LayoutRoot.Children.Add(rect);

            Canvas.SetLeft(rect, 150);

            Canvas.SetTop(rect, 118);

            rect.Visibility = System.Windows.Visibility.Collapsed;

           

        }

步骤2：给矩形创建动画
代码：



//显示

            rect.Visibility = System.Windows.Visibility.Visible;



            //新建动画

            storyboard = new Storyboard();

  



            



            //创建X轴方向动画



            DoubleAnimation da = new DoubleAnimation();





            Duration dur = new Duration(TimeSpan.FromMilliseconds(1000));



            da.Duration = dur;

            da.From = Canvas.GetLeft(rect);

            da.To = 800;



            Storyboard.SetTarget(da, rect);



            Storyboard.SetTargetProperty(da, new PropertyPath("(Canvas.Left)"));



            storyboard.Children.Add(da);



            

            //将动画动态加载进资源内



            if (!Resources.Contains("rectAnimation"))

            {



                Resources.Add("rectAnimation", storyboard);

              



            }



            //动画播放

        

            storyboard.Begin();

            

            

            bulletInit("ice");