Kepler-Release/Venus/Venus_Themes/UserControls/TMDoor.xaml

<UserControl x:Class="Venus_Themes.UserControls.TMDoor"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Venus_Themes.UserControls"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800" x:Name="tmDoor">
    <Viewbox>
        <Viewbox.RenderTransform>
            <RotateTransform Angle="{Binding ElementName=tmDoor,Path=RotateTransformValue}"  CenterX="4" CenterY="40"></RotateTransform>
        </Viewbox.RenderTransform>
        <Grid>
            <Rectangle  Fill="DimGray"  Width="8" VerticalAlignment="Top"    Height="80"    x:Name="r1"/>
            <Rectangle  Fill="DimGray"  Width="8" VerticalAlignment="Bottom" Height="80"    x:Name="r2">
                <Rectangle.RenderTransform>
                    <RotateTransform Angle="180" CenterX="4" CenterY="40"/>
                </Rectangle.RenderTransform>
            </Rectangle>
        </Grid> 
    </Viewbox>
</UserControl>