WPF 一个弧形手势提示动画

这是一个操作提示动画，一个小手在屏幕上按照一个弧形来回运动<Window x:Class="LZRichMediaWall.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/PResentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        xmlns:LocWindow="clr-namespace:LZRichMediaWall.UIControls"        xmlns:childControls="clr-namespace:LZRichMediaWall.UIControls.ChildControls"        Title="MainWindow" WindowState="Maximized" AllowsTransparency="True" WindowStyle="None">    <Window.Resources>        <PathGeometry x:Key="path">            <PathFigure StartPoint="0,100">                <PathFigure.Segments>                    <PathSegmentCollection>                        <ArcSegment Size="100,80"  IsLargeArc="True" SweepDirection="CounterClockwise" Point="600,100" />                    </PathSegmentCollection>                </PathFigure.Segments>            </PathFigure>        </PathGeometry>    </Window.Resources>    <Window.Triggers>        <EventTrigger RoutedEvent="Window.Loaded">            <EventTrigger.Actions>                <BeginStoryboard>                    <Storyboard>                        <DoubleAnimationUsingPath Storyboard.TargetName="tipGd"                                      Storyboard.TargetProperty="(Canvas.Left)"                                        PathGeometry="{StaticResource path}"                                      Duration="0:0:5" RepeatBehavior="Forever" Source="X" AutoReverse="True" />                        <DoubleAnimationUsingPath Storyboard.TargetName="tipGd"                                      Storyboard.TargetProperty="(Canvas.Top)"                                     PathGeometry="{StaticResource path}"                                      Duration="0:0:5" RepeatBehavior="Forever" Source="Y" AutoReverse="True"  />                    </Storyboard>                </BeginStoryboard>            </EventTrigger.Actions>        </EventTrigger>    </Window.Triggers>    <Grid x:Name="main_Gd" Background="Black">        <Canvas x:Name="animat_Cvs" VerticalAlignment="Bottom" HorizontalAlignment="Center" Margin="-650,0,0,500" Visibility="Collapsed">            <Path Stroke="Transparent" StrokeThickness="0" Data="{StaticResource path}" Canvas.Top="10" Canvas.Left="10">            </Path>            <Grid x:Name="tipGd" Height="63" Width="89" Visibility="Visible" MouseLeftButtonDown="TipGd_OnMouseLeftButtonDown">                <!--<Image Height="55" Width="89" Margin="0,-100,-30,0" Source="/LZRichMediaWall;component/Images/点我.png"></Image>-->                <!--<Image x:Name="quan" Height="50" Width="50" Source="/LZRichMediaWall;component/Images/圈.png">                    <Image.Triggers>                        <EventTrigger RoutedEvent="UserControl.Loaded">                            <BeginStoryboard>                                <Storyboard x:Name="storyB" RepeatBehavior="Forever" AutoReverse="True">                                    <DoubleAnimation From="0.0" To="1.0" Duration="0:0:0.5" Storyboard.TargetName="quan" Storyboard.TargetProperty="Opacity"/>                                </Storyboard>                            </BeginStoryboard>                        </EventTrigger>                    </Image.Triggers>                </Image>-->                <Image x:Name="show" Height="63" Width="76" Margin="0,0,-5,-60" Source="/LZRichMediaWall;component/Images/手.png"></Image>            </Grid>            <Label x:Name="textTip" Height="50" Width="300" Content="单 指 滑 动" FontSize="30" Foreground="White"                   VerticalContentAlignment="Center" HorizontalContentAlignment="Center" Canvas.Left="200" Canvas.Top="320">                <Label.Triggers>                    <EventTrigger RoutedEvent="UserControl.Loaded">                        <BeginStoryboard>                            <Storyboard x:Name="storyB" RepeatBehavior="Forever" AutoReverse="True">                                <DoubleAnimation From="0.0" To="1.0" Duration="0:0:1" Storyboard.TargetName="textTip" Storyboard.TargetProperty="Opacity"/>                            </Storyboard>                        </BeginStoryboard>                    </EventTrigger>                </Label.Triggers>            </Label>        </Canvas>    </Grid></Window>