Direct编程——移动三角

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

namespace WindowsTriangle
{
    public partial class Form1 : Form
    {
        private Device device = null;

        private float angle = 0.0f;

        public Form1()
        {
            InitializeComponent();

            this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.Opaque, true);
            PresentParameters para = new PresentParameters();

            para.Windowed = true;

            para.SwapEffect = SwapEffect.Discard;

 

            device = new Device(0, DeviceType.Hardware, this, CreateFlags.HardwareVertexProcessing, para);
        }

        public void SetupCamera()
        {

            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, 0, 5.0f), new Vector3(), new Vector3(0, 1, 0));

 

            //device.Transform.World = Matrix.RotationZ( Environment.TickCount / ( float ) Math.PI );

 

            device.Transform.World = Matrix.RotationAxis(new Vector3(angle / ((float)Math.PI * 2.0f), angle / ((float)Math.PI * 4.0f), angle / ((float)Math.PI * 6.0f)), angle / (float)Math.PI);

            angle += 0.1f;

 

            device.RenderState.CullMode = Cull.None;    //*1

            device.RenderState.Lighting = false;        //*2

        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            device.Clear(ClearFlags.Target, Color.Blue, 0.0f, 0);

 

            SetupCamera();

 

            CustomVertex.PositionColored[] verts = new CustomVertex.PositionColored[3];

            verts[0].Position = new Vector3(0.0f, 1.0f, 1.0f);

            verts[0].Color = Color.Aqua.ToArgb();

            verts[1].Position = new Vector3(-1.0f, -1.0f, 1.0f);

            verts[1].Color = Color.Black.ToArgb();

            verts[2].Position = new Vector3(1.0f, -1.0f, 1.0f);

            verts[2].Color = Color.Purple.ToArgb();

            device.BeginScene();

            device.VertexFormat = CustomVertex.PositionColored.Format;

            device.DrawUserPrimitives(PrimitiveType.TriangleList, 1, verts);

            device.EndScene();

            device.Present();

            this.Invalidate();
        }
    }
}