WPF，请问一个LayoutTransform变换的问题

<Grid >

    <Grid HorizontalAlignment="Left" Height="104" Margin="100,257,0,0" VerticalAlignment="Top" Width="714">

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="auto"/>

            <ColumnDefinition />

            <ColumnDefinition Width="auto"/>

        </Grid.ColumnDefinitions>

        <Border Background="Black" Width="200" />

        <Border Grid.Column="1" Background="Red"/>

            <Border Grid.Column="2" Background="Black" Width="200" RenderTransformOrigin="0.5,0.5"/>

        </Grid>       

</Grid>

上面在Grid的三列中各放了一个Border，然后在Blend中，对第三个Border使用LayoutTransform属性应用变换，而不是使用RenderTransform属性。如下所示：

<Grid >

    <Grid HorizontalAlignment="Left" Height="104" Margin="100,257,0,0" VerticalAlignment="Top" Width="714">

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="auto"/>

            <ColumnDefinition />

            <ColumnDefinition Width="auto"/>

        </Grid.ColumnDefinitions>

        <Border Background="Black" Width="200" />

        <Border Grid.Column="1" Background="Red"/>

        <Border Grid.Column="2" Background="Black" Width="200" RenderTransformOrigin="0.5,0.5">

            <Border.LayoutTransform>

                <TransformGroup>

                    <ScaleTransform/>

                    <SkewTransform/>

                    <RotateTransform Angle="30"/>

                    <TranslateTransform/>

                </TransformGroup>

            </Border.LayoutTransform>

        </Border>

    </Grid>       

</Grid>