C# AppSDK HelixToolkit

MainWindow.xaml

<!-- Copyright (c) Microsoft Corporation. All rights reserved. -->
<!-- Licensed under the MIT License. See LICENSE in the project root for license information. -->

<Window
    x:Class="TestHelix.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:TestHelix"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:hx="using:HelixToolkit.WinUI"
    mc:Ignorable="d">

    <Grid>

        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>

        <StackPanel Grid.Column="0" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
            <Button x:Name="myButton" Click="myButton_Click">Click Me</Button>
        </StackPanel>

        <Grid Grid.Column="1">
            <hx:Viewport3DX x:Name="MainSwapChainPanel"
                            Background="Blue"
                            FXAALevel="None"
                            EffectsManager="{x:Bind EffectsManager }"
                            ModelUpDirection="{x:Bind UpDirection}"
                            ShowCoordinateSystem="True"
                            BackgroundColor="White"
                            ShowFrameDetails="True"
                            ShowCameraInfo="True"
                            ShowFrameRate="True"
                            >

                <hx:AmbientLight3D Color="White" />
                <hx:DirectionalLight3D Direction="{ Binding ElementName=MainSwapChainPanel, Path=Camera.LookDirection}" Color="White" />

                <hx:LineGeometryModel3D x:Name="grid"
                                        Geometry="{ x:Bind Grid}"
                                        Color="{x:Bind GridColor}"
                                        >
                    
                </hx:LineGeometryModel3D>
                
            </hx:Viewport3DX>
        </Grid>
        
    </Grid>
</Window>

MainWindow.xaml.cs

using HelixToolkit.SharpDX.Core;
using HelixToolkit.WinUI;
using Microsoft.UI;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Controls.Primitives;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Input;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Media.Media3D;
using Microsoft.UI.Xaml.Navigation;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI;

// To learn more about WinUI, the WinUI project structure,
// and more about our project templates, see: http://aka.ms/winui-project-info.

namespace TestHelix
{
    /// <summary>
    /// An empty window that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainWindow : Window
    {

        public Camera Camera = new OrthographicCamera( ) { 
            NearPlaneDistance = 1e-2, 
            FarPlaneDistance = 1e4, 
            Position = new SharpDX.Vector3( 0, -5, 0 ),
        };

        public EffectsManager EffectsManager;

        public SharpDX.Vector3 UpDirection = new SharpDX.Vector3( 0, 0, 1 );

        public LineGeometry3D Grid;
        public Windows.UI.Color GridColor;

        public MainWindow( )
        {
            this.InitializeComponent( );

            this.EffectsManager = new DefaultEffectsManager( );

            this.Grid = LineBuilder.GenerateGrid( new SharpDX.Vector3( 0, 0, 1 ), -5, 5, -5, 5 );
            this.GridColor = Colors.Red;

            var blue = PhongMaterials.Blue;

            blue.EnableFlatShading = true;

            var p1 = new SharpDX.Vector3( 0, 0, 0 );
            var p2 = new SharpDX.Vector3( 5, 0, 0 );

            var s1 = new MeshBuilder( );

            s1.AddCylinder( p1, p2, 0.25, 120 );

            var mesh_geometry = s1.ToMeshGeometry3D( );

            MeshGeometryModel3D mesh = new MeshGeometryModel3D( )
            {
                Geometry = mesh_geometry,
                Material = blue,
            };

            this.MainSwapChainPanel.Items.Add( mesh );
            this.MainSwapChainPanel.LookAt( new SharpDX.Vector3( 0, 0, 0 ) );
            
        }

        private void myButton_Click( object sender, RoutedEventArgs e )
        {
            myButton.Content = "Clicked";
        }
    }
}