c# 3d圖像顯示

1.應用directx圖形庫進行開發；

2.代碼：

public class TClass : System.Windows.Forms.Form
    {
        /// <summary>
        /// 設備對象，場景中全部圖形對象的父對象
        /// </summary>
        private Device device = null;

        /// <summary>
        /// 座標系四棱錐頂點緩衝
        /// </summary>
        VertexBuffer vertexBuffer = null;

        /// <summary>
        /// 此參數設置爲必須，它定義了要建立的Direct3D設備的表示參數，如後臺緩衝區的高度、寬度和像素格式、如何從後臺緩衝區複製到前臺緩存、以及屏幕顯示的方式等等
        /// </summary>
        PresentParameters presentParameters;

        /// <summary>
        /// 暫停標誌
        /// </summary>
        bool pause = false;

        /// <summary>
        /// 隨機數，用來生成隨機顏色用的
        /// </summary>
        Random rn = new Random();

        /// <summary>
        /// 構造函數，設置窗體大小
        /// </summary>
        public TClass()
        {
            this.ClientSize = new System.Drawing.Size(300, 300);
        }

        /// <summary>
        /// 初始化繪圖環境
        /// </summary>
        /// <returns></returns>
        public bool InitializeGraphics()
        {
            try
            {
                presentParameters = new PresentParameters();
                //設置屏幕顯示模式爲窗口模式
                presentParameters.Windowed = true;
                //設置如何從後臺緩衝區複製到前臺緩衝區(SwapEffect.Discard表示緩衝區在顯示後當即被捨棄,這樣能夠節省開銷)
                presentParameters.SwapEffect = SwapEffect.Discard;
                //建立一個設備
                device = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParameters);
                //爲設備釋放訂閱事件處理
                device.DeviceReset += new System.EventHandler(this.OnResetDevice);

                this.OnCreateDevice(device, null);
                this.OnResetDevice(device, null);
                pause = false;
                return true;
            }

            catch (DirectXException)
            {
                return false;
            }
        }

        /// <summary>
        /// 設備建立時創建頂點緩衝
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void OnCreateDevice(object sender, EventArgs e)
        {
            Device dev = (Device)sender;

            //建立頂點緩衝,有個頂點
            vertexBuffer = new VertexBuffer(typeof(CustomVertex.PositionColored), 18, dev, 0, CustomVertex.PositionColored.Format, Pool.Default);
            //爲建立頂點緩存訂閱事件處理
            vertexBuffer.Created += new System.EventHandler(this.OnCreateVertexBuffer);

            this.OnCreateVertexBuffer(vertexBuffer, null);
        }


        /// <summary>
        /// 設備撤銷的事件處理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void OnResetDevice(object sender, EventArgs e)
        {
            Device dev = (Device)sender;
            //關閉剔除模式，使咱們能看見此四棱錐的前面和後面
            dev.RenderState.CullMode = Cull.None;
            // 關閉場景裏的燈光，顯示頂點本身的顏色
            dev.RenderState.Lighting = false;
        }

        /// <summary>
        /// 建立頂點緩存的事件處理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void OnCreateVertexBuffer(object sender, EventArgs e)
        {

            VertexBuffer vb = (VertexBuffer)sender;
            CustomVertex.PositionColored[] verts = (CustomVertex.PositionColored[])vb.Lock(0, 0);

            //四棱錐原始的個點
            Vector3 vertex1 = new Vector3(25, 0, 0);
            Vector3 vertex2 = new Vector3(0, 0, -25);
            Vector3 vertex3 = new Vector3(-25, 0, 0);
            Vector3 vertex4 = new Vector3(0, 0, 25);
            Vector3 vertex5 = new Vector3(0, 25, 0);

            //四棱錐中包含個三角形，因此要構造個點來繪製
            verts[0].Position = vertex1;
            verts[1].Position = vertex2;
            verts[2].Position = vertex5;
            verts[3].Position = vertex2;
            verts[4].Position = vertex3;
            verts[5].Position = vertex5;
            verts[6].Position = vertex3;
            verts[7].Position = vertex4;
            verts[8].Position = vertex5;
            verts[9].Position = vertex4;
            verts[10].Position = vertex1;
            verts[11].Position = vertex5;
            verts[12].Position = vertex2;
            verts[13].Position = vertex1;
            verts[14].Position = vertex3;
            verts[15].Position = vertex3;
            verts[16].Position = vertex1;
            verts[17].Position = vertex4;


            //給每一個點賦予隨機顏色
            for (int i = 0; i < 18; i++)
            {
                verts[i].Color = Color.FromArgb(SetColor(), SetColor(), SetColor()).ToArgb();

            }
            vb.Unlock();



        }

        /// <summary>
        /// 返回到之間的一個隨機數，用來生成隨機顏色
        /// </summary>
        /// <returns></returns>
        public int SetColor()
        {
            int number = rn.Next(256);
            return number;
        }


        /// <summary>
        /// 設置攝像機的位置
        /// </summary>
        private void SetupCamera()
        {
            //設置世界矩陣，根據系統運行時間而變化
            device.Transform.World = Matrix.RotationAxis(new Vector3((float)Math.Cos(Environment.TickCount / 250.0f), 1, (float)Math.Sin(Environment.TickCount / 250.0f)), Environment.TickCount / 3000.0f);
            //設置攝像機的位置，它在z軸上-50處，看着原點，y軸爲正方向
            device.Transform.View = Matrix.LookAtLH(new Vector3(0.0f, 0.0f, -50f), new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 1.0f, 0.0f));

            //設置攝像機的視界，角度爲度，看的最近爲,看的最遠處爲.再也不這個視界中的影像都不會被顯示
            device.Transform.Projection = Matrix.PerspectiveFovLH(((float)(float)Math.PI / 2), 1.0f, 10.0f, 200.0f);
        }


        /// <summary>
        /// 繪製圖形
        /// </summary>
        public void Render()
        {
            if (device == null)
                return;

            if (pause)
                return;

            //背景設爲綠色
            device.Clear(ClearFlags.Target, System.Drawing.Color.Blue, 1.0f, 0);
            //開始場景
            device.BeginScene();
            // 設置世界，視野和投影矩陣
            SetupCamera();

            // 給設備指定頂點緩存
            device.SetStreamSource(0, vertexBuffer, 0);

            //設置設備的頂點格式
            device.VertexFormat = CustomVertex.PositionColored.Format;

            //繪製圖形，使用的方法爲三角形列表，個數爲個
            device.DrawPrimitives(PrimitiveType.TriangleList, 0, 6);

            //結束場景
            device.EndScene();

            //更新場景
            device.Present();
        }

        //重載OnPaint函數
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            //繪製圖形
            this.Render();
        }
    }

　　調用代碼：

using (TClass frm = new TClass())
            {
                if (!frm.InitializeGraphics()) // 初始化 Direct3D
                {
                    MessageBox.Show("不能初始化 Direct3D.程序將退出.");
                    return;
                }
                frm.Show();

                // While the form is still valid, render and process messages
                while (frm.Created)
                {
                    frm.Render();
                    Application.DoEvents(); //處理當前在消息隊列中的全部 Windows 消息
                }
            }

　　3.須要引用directx的程序集，下載鏈接（含項目）：

　　連接：https://pan.baidu.com/s/1D4wrHC7c2Pg1wpWXlrLrSA
　　提取碼：7f6w

　　4.注意調用Microsoft.DirectX.dll時候，須要在程序配置文件中設置useLegacyV2RuntimeActivationPolicy爲true。