我想绘制一个3d立方体，但它不起作用。里面

Question

编辑代码：固定
大家好，我有我的窗口下面的事件处理程序：

private void buttonView_Click(object sender, RoutedEventArgs e) 
{ 
    //Camera 
    PerspectiveCamera camera = new PerspectiveCamera(); 
    camera.LookDirection = new Vector3D(5, -2, -3); 
    camera.Position = new Point3D(-5, 2, 3); 
    camera.UpDirection = new Vector3D(0, 1, 0); 
    camera.NearPlaneDistance = 1; 
    camera.FarPlaneDistance = 10; 
    //Lighting 
    DirectionalLight light = new DirectionalLight(Colors.White, new Vector3D(-3, -4, -5)); 
    //Cube 
    Cube cube = new Cube(); 
    GeometryModel3D cubeModel = new GeometryModel3D(); 
    cubeModel.Geometry = cube.Mesh; 
    cubeModel.Material = new DiffuseMaterial(Brushes.Red); 
    //ModelGroup 
    Model3DGroup modelGroup = new Model3DGroup(); 
    modelGroup.Children.Add(light); 
    modelGroup.Children.Add(cubeModel); 
    //Model 
    ModelVisual3D model = new ModelVisual3D(); 
    model.Content = modelGroup; 
    //Viewport 
    Viewport3D view = new Viewport3D(); 
    view.Camera = camera; 
    view.Children.Add(model); 
    //Show it all 
    Frame f = new Frame(); 
    f.Content = view; 
    grid1.Children.Add(f); 
} 

，这是我的立方体类：

public class Cube : Primitive 
{ 
    Point3D[] positions = new Point3D[] { 
     new Point3D(0, 1, 1), 
     new Point3D(0, 0, 1), 
     new Point3D(1, 1, 1), 
     new Point3D(1, 0, 1), 
     new Point3D(1, 1, 0), 
     new Point3D(0, 0, 0), 
     new Point3D(0, 1, 1), 
     new Point3D(0, 0, 1), 
     new Point3D(0, 1, 0), 
     new Point3D(0, 1, 0), 
     new Point3D(1, 1, 1), 
     new Point3D(0, 1, 1), 
     new Point3D(1, 1, 1), 
     new Point3D(1, 0, 1), 
     new Point3D(1, 1, 0), 
     new Point3D(1, 0, 0), 
     new Point3D(1, 0, 1), 
     new Point3D(0, 0, 1), 
     new Point3D(1, 0, 0), 
     new Point3D(0, 0, 0), 
     new Point3D(1, 1, 0), 
     new Point3D(1, 0, 0), 
     new Point3D(0, 1, 0), 
     new Point3D(0, 0, 0) 
     }; 
    int[] vertices = new int[] { 
     0, 
     1, 
     2, 
     1, 
     3, 
     2, 
     4, 
     5, 
     6, 
     5, 
     7, 
     6, 
     8, 
     9, 
     10, 
     9, 
     11, 
     10, 
     12, 
     13, 
     14, 
     13, 
     15, 
     14, 
     16, 
     17, 
     18, 
     17, 
     19, 
     18, 
     20, 
     21, 
     22, 
     21, 
     23, 
     22 
     }; 
    public Cube() 
    { 
     this.Mesh.Positions = new Point3DCollection(positions); 
     this.Mesh.TriangleIndices = new Int32Collection(vertices); 
    } 
} 

public abstract class Primitive 
{ 
    public Primitive() 
    { 
     this.Mesh = new MeshGeometry3D(); 
    } 
    public MeshGeometry3D Mesh { get; protected set; } 
} 

然而，当我点击按钮，什么也没有显示。 我的事件处理程序中是否有错误？

Answer 1

我是个白痴。对不起，打扰你了。问题是我没有设置

camera.FarPlaneDistance但只有camera.NearPlaneDistance（两次）。
对不起，打扰你。