D3dScenePresenter - How to present and manipulate a 3D scene using MDX

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using MdxScene.Cameras;
using MdxScene.Controls;
using MdxScene.Lights;
using MdxScene.Shapes;
using MdxWpfInteroperability;
using Microsoft.DirectX.Direct3D;

namespace MdxScene.Example
{
    /// <summary>
    /// Interaction logic for SceneManipulationExampleWindow.xaml
    /// </summary>
    public partial class SceneManipulationExampleWindow : Window
    {
        private D3dScene _scene;

        private MarkBox _pickMarkBox;

        public SceneManipulationExampleWindow()
        {
            InitializeComponent();

            InitScene();
        }

        private void InitScene()
        {
            _scene = new D3dScene
                         {
                             ClearColor = System.Drawing.Color.Gray
                         };

            // Set the light.
            _scene.Lights.Add(new D3dDirectionalLight
                                  {
                                      XDirection = 1,
                                      YDirection = -1,
                                      ZDirection = -1,
                                      Diffuse = System.Drawing.Color.DimGray
                                  });

            _scene.Lights.Add(new D3dDirectionalLight
            {
                XDirection = -1,
                YDirection = 1,
                ZDirection = 1,
                Diffuse = System.Drawing.Color.Gray
            });

            // Add shapes.
            _scene.Shapes.Add(new Pyramid
                                  {
                                      DefaultMaterial = new Material {Diffuse = System.Drawing.Color.Red},
                                      ScalingX = 200,
                                      ScalingY = 200,
                                      ScalingZ = 200
                                  });

            _scene.Shapes.Add(new Star
                                  {
                                      DefaultMaterial = new Material {Diffuse = System.Drawing.Color.Yellow},
                                      ScalingX = 300,
                                      ScalingY = 300,
                                      ScalingZ = 300,
                                      TranslationX = 600
                                  });

            _scene.Shapes.Add(new House
                                  {
                                      BodyMaterial = new Material {Diffuse = System.Drawing.Color.Green},
                                      RoofMaterial = new Material {Diffuse = System.Drawing.Color.Red},
                                      ScalingX = 150,
                                      ScalingZ = 150,
                                      ScalingY = 300,
                                      TranslationX = -600
                                  });

            // Add the mouse-over mark.
            _pickMarkBox = new MarkBox();
            _scene.Shapes.Add(_pickMarkBox);

            mdxSceneHost.Scene = _scene;
        }

        private void mdxSceneHost_D3dSurfaceMouseWheel(object sender, D3dSurfaceMouseWheelEventArgs e)
        {
            float relativeZoomDelta = e.MouseWheelEventArgs.Delta/1000f;
            float scalingFactor = 1 - relativeZoomDelta;
            D3dScenePresenter.UniformZoomCommand.Execute(scalingFactor, mdxSceneHost);
        }

        private void mdxSceneHost_MouseOverShapeChanged(object sender, MouseOverShapeChangedRoutedEventArgs e)
        {
            D3dShape pickedShape = e.NewShape;

            mdxSceneHost.PerformSceneAction(() => _pickMarkBox.MarkedShape = pickedShape);
        }
    }

}