form1.cs

这是一个简单的3D游戏源码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;

namespace Chapter5Code
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
        private Device device = null;
        private Mesh mesh = null;
        private Material[] meshMaterials;
        private Texture[] meshTextures;
		private SimplificationMesh simplifiedMesh = null;
		private float cameraPos = 580.0f;
		private const int MoveAmount = 100;
		private Microsoft.DirectX.Direct3D.Font font = null;

		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
        private float angle = 0.0f;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

            this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.Opaque, true);
		}

        /// <summary>
        /// We will initialize our graphics device here
        /// </summary>
        public void InitializeGraphics()
        {
            // Set our presentation parameters
            PresentParameters presentParams = new PresentParameters();

            presentParams.Windowed = true;
            presentParams.SwapEffect = SwapEffect.Discard;
            presentParams.AutoDepthStencilFormat = DepthFormat.D16;
            presentParams.EnableAutoDepthStencil = true;

            // Create our device
            device = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParams);

            // Load our mesh
            LoadMesh(@"..\..\tiny.x");
			//creat font
			font = new Microsoft.DirectX.Direct3D.Font(device,new System.Drawing.Font("Arial",14.0f,FontStyle.Bold | FontStyle.Italic));

        }

        private void LoadMesh(string file)
        {
            ExtendedMaterial[] mtrl;
			GraphicsStream adj;

            // Load our mesh
            mesh = Mesh.FromFile(file, MeshFlags.Managed, device, out adj,out mtrl);

            // If we have any materials, store them
            if ((mtrl != null) && (mtrl.Length > 0))
            {
                meshMaterials = new Material[mtrl.Length];
                meshTextures = new Texture[mtrl.Length];

                // Store each material and texture
                for (int i = 0; i < mtrl.Length; i++)
                {
                    meshMaterials[i] = mtrl[i].Material3D;
                    if ((mtrl[i].TextureFilename != null) && (mtrl[i].TextureFilename != string.Empty))
                    {
                        // We have a texture, try to load it
                        meshTextures[i] = TextureLoader.FromFile(device, @"..\..\" + mtrl[i].TextureFilename);
                    }
                }
            }

			//Clean our mesh
			Mesh tempMesh = Mesh.Clean(CleanType.Simplification,mesh,adj,adj);
			//replace extsting mesh with this one
			
			mesh = tempMesh;

			//creat simiplification mesh
			simplifiedMesh = new SimplificationMesh(mesh,adj);
        }

        private void SetupCamera()
        {
            device.Transform.Projection = Matrix.PerspectiveFovLH((float)Math.PI / 4, this.Width / this.Height, 1.0f, 10000.0f);
            device.Transform.View = Matrix.LookAtLH(new Vector3(0,0,cameraPos), new Vector3(), new Vector3(0,1,0));
            //device.RenderState.Ambient = Color.DarkBlue;
            device.Lights[0].Type = LightType.Directional;
            device.Lights[0].Diffuse = Color.White;
            device.Lights[0].Direction = new Vector3(0, -1, -1);
            device.Lights[0].Update();
            device.Lights[0].Enabled = true;

        }

        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.CornflowerBlue, 1.0f, 0);

            SetupCamera();

            device.BeginScene();

            // Draw our Mesh
            DrawMesh(angle / (float)Math.PI, angle / (float)Math.PI * 2.0f, angle / (float)Math.PI / 4.0f, 0.0f, 0.0f, 0.0f);

			font.DrawText(null,string.Format("number vertices in mesh: {0}",mesh.NumberVertices),new Rectangle(10,10,0,0),
				DrawTextFormat.NoClip,Color.BlanchedAlmond);
			font.DrawText(null,string.Format("number faces in mesh: {0}",mesh.NumberFaces),new Rectangle(10,30,0,0),
				DrawTextFormat.NoClip,Color.BlanchedAlmond);

            device.EndScene();

            device.Present();

            this.Invalidate();
        }

        private void DrawMesh(float yaw, float pitch, float roll, float x, float y, float z)
        {
            angle += 0.01f;

            device.Transform.World = Matrix.RotationYawPitchRoll(yaw, pitch, roll) * Matrix.Translation(x, y, z);
            for (int i = 0; i < meshMaterials.Length; i++)
            {
                device.Material = meshMaterials[i];
                device.SetTexture(0, meshTextures[i]);
                mesh.DrawSubset(i);
            }
        }

		protected override void OnKeyPress(KeyPressEventArgs e)
		{
			if(e.KeyChar == '+')
			{
				cameraPos += (MoveAmount * 2);
				simplifiedMesh.ReduceFaces(mesh.NumberFaces - MoveAmount);
				simplifiedMesh.ReduceVertices(mesh.NumberVertices - MoveAmount);
				mesh.Dispose();
				mesh = simplifiedMesh.Clone(simplifiedMesh.Options.Value,simplifiedMesh.VertexFormat,device);
			}
			if(e.KeyChar == 'w')
				device.RenderState.FillMode = FillMode.WireFrame;
			if(e.KeyChar == 's')
				device.RenderState.FillMode = FillMode.Solid;
			base.OnKeyPress (e);
		}


        /// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			this.Size = new Size(800,600);
			this.Text = "Form1";
		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
        static void Main() 
        {
            using (Form1 frm = new Form1())
            {
                // Show our form and initialize our graphics engine
                frm.Show();
                frm.InitializeGraphics();
                Application.Run(frm);
            }
        }
	}
}