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 DirectX3
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class DirectXForm : System.Windows.Forms.Form
	{
		/// <summary>
		/// Required designer variable.
		/// </summary>
		
		private Device device;
		private System.ComponentModel.Container components = null;
		private float angle = 0.0f;
		Mesh mesh = null;


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

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

		/// <summary>
		/// Initialize the DirectX Device
		/// </summary>
		public void InitializeDevice()
		{
			PresentParameters presentParams = new PresentParameters();

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

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

			Material boxMaterial = new Material();
			boxMaterial.Ambient = Color.White;
			boxMaterial.Diffuse = Color.White;
			device.Material = boxMaterial;
			
			device.Lights[0].Type = LightType.Directional;
			device.Lights[0].Position = new Vector3(0.0f, 3.0f, 3.0f);
			device.Lights[0].Diffuse = Color.DarkBlue;
			device.Lights[0].Enabled = true;
			device.Lights[0].Update();
		}


		private void DrawObject()
		{
			mesh = Mesh.Box(device, 2.0f, 2.0f, 2.0f);
		}


		private void DrawBox(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);

			DrawObject();
			mesh.DrawSubset(0);

		}


		protected override void OnPaint(PaintEventArgs e)
		{
			// Set the Camera
			device.Transform.Projection = Matrix.PerspectiveFovLH((float)Math.PI / 4, (float)this.Width / (float)this.Height, 1.0f, 100.0f);
			device.Transform.View = Matrix.LookAtLH(new Vector3(0.0f, 0.0f, 10.0f), new Vector3(), new Vector3(0.0f, 1.0f, 0.0f));
				
            // Clear the Scene
			device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.CornflowerBlue, 1.0f, 0);
				
			// Draw the scene
			device.BeginScene();
				DrawBox(angle / (float)Math.PI, angle / (float)Math.PI * 2.0f, angle / (float)Math.PI / 4.0f, 0.0f, 0.0f, 0.0f);
			device.EndScene();

			device.Present();

			this.Invalidate();
		}


		/// <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()
		{
			// 
			// DirectXForm
			// 
			this.components = new Container();
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(500, 500);
			this.Text = "DirectXForm";

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			using(DirectXForm dxf = new DirectXForm())
			{
				dxf.Show();
				dxf.InitializeDevice();
				Application.Run(dxf);
			}
		}
	}
}