在wpf中让一个控件按照一定的路径运行的动画。。叫做路径动画，这个示例演示了让一个rectangle按照一个s形曲线反复运行的动画。
效果：
只有一个文件：
全部代码如下 ：
<Window x:Class="wpfcore.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:wpfcore"mc:Ignorable="d"Background="LightBlue"Title="MainWindow" Width="420" Height="340"><Window.Resources><PathGeometry x:Key="SLine" Figures="M 10,100 C 35,0 135,0 160,100 180,190 285,200 310,100" /></Window.Resources><Grid Margin="20"><StackPanel><Canvas HorizontalAlignment="Left" Margin="0" Width="340" Height="215" ><Path VerticalAlignment="Top" Margin="15,15,15,15" Data="{StaticResource SLine}"Stroke="Blue" StrokeThickness="2"Stretch="None"/><Path Fill="Red"><Path.Data><RectangleGeometry x:Name="MyAnimatedRectGeometry" Rect="0,0 30 30" ><RectangleGeometry.Transform><TransformGroup><RotateTransform x:Name="MyRotateTransform" Angle="0" CenterX="15" CenterY="15" /><TranslateTransform x:Name="MyTranslateTransform" X="10" Y="100" /></TransformGroup></RectangleGeometry.Transform></RectangleGeometry></Path.Data></Path></Canvas><Button Width="80" HorizontalAlignment="Left" Content="开始动画"><Button.Triggers><EventTrigger RoutedEvent="Button.Click"><BeginStoryboard Name="MyBeginStoryboard"><Storyboard><DoubleAnimationUsingPathStoryboard.TargetName="MyRotateTransform"Storyboard.TargetProperty="Angle"Source="Angle" Duration="0:0:5" RepeatBehavior="Forever" AutoReverse="True" PathGeometry="{StaticResource SLine}"></DoubleAnimationUsingPath><DoubleAnimationUsingPathStoryboard.TargetName="MyTranslateTransform"Storyboard.TargetProperty="X"Source="X" Duration="0:0:5" RepeatBehavior="Forever" AutoReverse="True" PathGeometry="{StaticResource SLine}"></DoubleAnimationUsingPath><DoubleAnimationUsingPathStoryboard.TargetName="MyTranslateTransform"Storyboard.TargetProperty="Y"Source="Y" Duration="0:0:5" RepeatBehavior="Forever" AutoReverse="True" PathGeometry="{StaticResource SLine}"></DoubleAnimationUsingPath></Storyboard></BeginStoryboard></EventTrigger></Button.Triggers> </Button></StackPanel></Grid>
</Window>动画截图：
完事，搞定。
