CtrEditor/ObjetosSim/Emuladores/ucTanque.xaml

<UserControl x:Class="CtrEditor.ObjetosSim.ucTanque"
             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:CtrEditor.ObjetosSim"
             mc:Ignorable="d"
             xmlns:vm="clr-namespace:CtrEditor.ObjetosSim"
             xmlns:convert="clr-namespace:CtrEditor.Convertidores">

    <UserControl.Resources>
        <convert:MeterToPixelConverter x:Key="MeterToPixelConverter"/>
        <convert:LevelToHeightMultiConverter x:Key="LevelToHeightMultiConverter"/>
        <convert:WidthPercentageConverter x:Key="WidthPercentageConverter"/>
    </UserControl.Resources>

    <UserControl.DataContext>
        <vm:osTanque Alto="1" Ancho="1" Angulo="-4" />
    </UserControl.DataContext>

    <Grid>
        <Image x:Name="TankImage"
               Source="/imagenes/tank.png"
               Width="{Binding Ancho, Converter={StaticResource MeterToPixelConverter}}"
               Height="{Binding Alto, Converter={StaticResource MeterToPixelConverter}}"
               Stretch="Uniform">
        </Image>
        <Slider 
                    HorizontalAlignment="Left" 
                    VerticalAlignment="Center"
                    Height="{Binding Alto, Converter={StaticResource MeterToPixelConverter}}"
                    Orientation="Vertical" 
                    Value="{Binding Level}" 
                    Maximum="100"/>

        <Rectangle x:Name="WaterLevel"
                   Fill="Blue"
                   VerticalAlignment="Bottom"
                   HorizontalAlignment="Center">
            <Rectangle.Width>
                <Binding ElementName="TankImage" Path="ActualWidth" Converter="{StaticResource WidthPercentageConverter}" />
            </Rectangle.Width>
            <Rectangle.Height>
                <MultiBinding Converter="{StaticResource LevelToHeightMultiConverter}">
                    <Binding Path="Level" />
                    <Binding ElementName="TankImage" Path="ActualHeight" />
                </MultiBinding>
            </Rectangle.Height>
        </Rectangle>
        
        <Label Content="{Binding Level}" HorizontalAlignment="Center" Margin="10,10,0,0" VerticalAlignment="Top"/>
    </Grid>
</UserControl>