FModel/FModel/Views/ModelViewer.xaml

<adonisControls:AdonisWindow x:Class="FModel.Views.ModelViewer"
                             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                             xmlns:converters="clr-namespace:FModel.Views.Resources.Converters"
                             xmlns:adonisUi="clr-namespace:AdonisUI;assembly=AdonisUI"
                             xmlns:adonisControls="clr-namespace:AdonisUI.Controls;assembly=AdonisUI"
                             xmlns:helix="http://helix-toolkit.org/wpf/SharpDX"
                             WindowStartupLocation="CenterScreen" ResizeMode="CanResize" IconVisibility="Collapsed" Background="#262630"
                             PreviewKeyDown="OnWindowKeyDown" Closing="OnClosing"
                             Height="{Binding Source={x:Static SystemParameters.MaximizedPrimaryScreenHeight}, Converter={converters:RatioConverter}, ConverterParameter='0.60'}"
                             Width="{Binding Source={x:Static SystemParameters.MaximizedPrimaryScreenWidth}, Converter={converters:RatioConverter}, ConverterParameter='0.60'}">
    <adonisControls:AdonisWindow.Style>
        <Style TargetType="adonisControls:AdonisWindow" BasedOn="{StaticResource {x:Type adonisControls:AdonisWindow}}" >
            <Setter Property="Title" Value="Model Viewer" />
        </Style>
    </adonisControls:AdonisWindow.Style>
    <adonisControls:AdonisWindow.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Resources/Resources.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </adonisControls:AdonisWindow.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="{adonisUi:Space 1}" />
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <Menu Grid.Row="0">
            <MenuItem Header="Append" />
        </Menu>

        <Grid Grid.Row="2">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="3*" />
            </Grid.ColumnDefinitions>

            <ListBox Grid.Column="0" Style="{StaticResource MaterialsListBox}" />
            <helix:Viewport3DX Grid.Column="1" EffectsManager="{Binding ModelViewer.EffectManager}" Camera="{Binding ModelViewer.Cam}"
                               IsChangeFieldOfViewEnabled="False" IsMoveEnabled="False" UseDefaultGestures="False" ShowViewCube="False"
                               ShowCameraTarget="False" ModelUpDirection="0,0,1" EnableSSAO="True" MSAA="Maximum" FXAALevel="Ultra"
                               SSAOQuality="High" BackgroundColor="#262630">
                <helix:Viewport3DX.InputBindings>
                    <MouseBinding Command="helix:ViewportCommands.Rotate" Gesture="LeftClick" />
                    <MouseBinding Command="helix:ViewportCommands.Zoom" Gesture="RightClick" />
                    <MouseBinding Command="helix:ViewportCommands.Pan" Gesture="MiddleClick" />
                </helix:Viewport3DX.InputBindings>

                <helix:AmbientLight3D Color="DimGray" />
                <helix:DirectionalLight3D Direction="{Binding ModelViewer.Cam.LookDirection}" Color="White" />

                <helix:LineGeometryModel3D Geometry="{Binding ModelViewer.XAxis}" Color="#FC3854" />
                <helix:LineGeometryModel3D Geometry="{Binding ModelViewer.YAxis}" Color="#85CB22" />
                <helix:LineGeometryModel3D Geometry="{Binding ModelViewer.ZAxis}" Color="#388EED" />

                <helix:GroupModel3D x:Name="MyAntiCrashGroup" ItemsSource="{Binding ModelViewer.Group3d}" />
            </helix:Viewport3DX>
        </Grid>
    </Grid>
</adonisControls:AdonisWindow>