关于RotateTransform，如何隐藏超出父元素区域的那部分。

Question

下面的border2，旋转后，超出了border1的区域，该怎么使得那部分隐藏？    <Grid>
            <Border Name="border1" Width="200" Height="200" Background="Red" >
            <Border Name="border2" Width="200" Height="200" Background="Green" RenderTransformOrigin="0.5,0.5">
                <Border.RenderTransform>
                    <RotateTransform Angle="45"></RotateTransform>
                </Border.RenderTransform>
            </Border>
        </Border>
    </Grid>

Answer 1

已解决：添加ClipToBounds属性。<Grid>
        <Border Name="border1" Width="200" Height="200" Background="Red"  ClipToBounds="True">
            <Border Name="border2" Width="200" Height="200" Background="Green" RenderTransformOrigin="0.5,0.5">
                <Border.RenderTransform>
                    <RotateTransform Angle="45"></RotateTransform>
                </Border.RenderTransform>
            </Border>
        </Border>
    </Grid>