1 <!--轨道路径的实现，通过使用EllipseGeometry实现椭圆路径的绘制-->
2         <Path Stroke="#FF686964">
3             <Path.Data>
4                 <EllipseGeometry Center="400 250" RadiusX="400" RadiusY="250" x:Name="e1"/>
5             </Path.Data>
6         </Path>

<!--球体的简单实现，可以通过笔刷等方式绘制它的效果，以下是简单的通过线性笔刷绘制太阳的Ellipse-->
<Ellipse Height="150" HorizontalAlignment="Left" Name="sun" VerticalAlignment="Top" Width="150"><Ellipse.Fill><LinearGradientBrush EndPoint="1,0.5" StartPoint="0,0.5"><GradientStop Color="#FFFAAC0A" Offset="0.246" /><GradientStop Color="#FFF9F00B" Offset="0.967" /></LinearGradientBrush></Ellipse.Fill></Ellipse>

 1 <!--通过设置Grid的RenderTransform来设置它的特效，我们用了是其中的<MatrixTransform-->
 2             <Grid.RenderTransform>
 3                     <MatrixTransform x:Name="grid"/>
 4             </Grid.RenderTransform>
 5             <!--Grid触发器-->
 6             <Grid.Triggers>
 7                 <!--RouteEvent是设置路由时间由Page.Loaded时候触发，使用MatrixAnimationUsingPath，并指向grid-->
 8                 <EventTrigger RoutedEvent="Page.Loaded">
 9                     <BeginStoryboard>
10                         <Storyboard x:Name="sb1" RepeatBehavior="Forever">
11                             <MatrixAnimationUsingPath x:Name="ma1"
12                                                       Storyboard.TargetName="grid"
13                                                       Storyboard.TargetProperty="Matrix"
14                                                       Duration="0:1:0"/>
15                         </Storyboard>
16                     </BeginStoryboard>
17                 </EventTrigger>
18             </Grid.Triggers>

1 PathGeometry pg1 = new PathGeometry();
2             pg1.AddGeometry(e1);
3             ma1.PathGeometry = pg1;
4             sb1.Begin(grid1);