CyberX8/CyberX8_Themes/UserControls/ProcessFurnace.xaml

<UserControl x:Class="CyberX8_Themes.UserControls.ProcessFurnace"
             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:CyberX8_Themes.UserControls"
             mc:Ignorable="d" 
             d:DesignHeight="600" d:DesignWidth="400">
    <Grid>
        <Viewbox Stretch="Fill">
            <Border BorderThickness="0" BorderBrush="Gray">
                <Canvas  Width="400" Height="600">
                    <Polygon Points="0,600 0,0 400,0 400,600 0,600"  Stroke="Gray" StrokeThickness="5" >
                        <Polygon.Fill>
                            <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                                <GradientStop Color="Silver" Offset="0.0" />
                                <GradientStop Color="White" Offset="0.5" />
                                <GradientStop Color="Silver" Offset="1" />
                            </LinearGradientBrush>
                        </Polygon.Fill>
                    </Polygon>
                    <Rectangle Canvas.Left="101" Canvas.Top="111" Width="200" Height="300" RadiusX="15" RadiusY="15" Stroke="Black"></Rectangle>
                    <Rectangle Canvas.Left="126" Canvas.Top="161" Width="150" Height="200" RadiusX="15" RadiusY="15" Stroke="Black" Fill="DarkGray"></Rectangle>
                </Canvas>
            </Border>
        </Viewbox>
    </Grid>
</UserControl>