你好,
这个应该是路径动画实现的效果,我给你一个简单的例子参照:
<Window.Resources>
<PathGeometry x:Key="path">
<PathFigure IsClosed="True">
<ArcSegment Point="100,200" Size="15,10" SweepDirection="Clockwise"></ArcSegment>
<ArcSegment Point="400,50" Size="5,5" ></ArcSegment>
</PathFigure>
</PathGeometry>
</Window.Resources>
<Window.Triggers>
<EventTrigger RoutedEvent="Window.Loaded">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimationUsingPath Storyboard.TargetName="ellipse"
Storyboard.TargetProperty="(Canvas.Left)"
PathGeometry="{StaticResource path}"
Duration="0:0:5" RepeatBehavior="Forever" Source="X" />
<DoubleAnimationUsingPath Storyboard.TargetName="ellipse"
Storyboard.TargetProperty="(Canvas.Top)"
PathGeometry="{StaticResource path}"
Duration="0:0:5" RepeatBehavior="Forever" Source="Y" />
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Window.Triggers>
<Grid>
<Canvas Margin="10">
<Path Stroke="Red" StrokeThickness="1" Data="{StaticResource path}" Canvas.Top="10" Canvas.Left="10">
</Path>
<Ellipse Name="ellipse" Fill="Black" Width="10" Height="10"></Ellipse>
</Canvas>
</Grid>
效果图如下:

谢谢
Daisy Tian
MSDN Community Support
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