VCS/CustomVertex - Sample is best!

開発環境	Microsoft Visual C# 2010 Express (SP1)
実行環境	Microsoft Windows XP Home Edition (SP3)
プロジェクトの種類	Windows Game (4.0)
プロジェクト名	CustomVertex

参考

• Memeplexes かんたんXNA4.0　その２９　カスタム頂点

VertexPositionNormalColor.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
 
namespace CustomVertex
{
    struct VertexPositionNormalColor : IVertexType
    {
        Vector3 Position;
        Vector3 Normal;
        Color Color;
 
        public VertexPositionNormalColor(Vector3 position, Vector3 normal, Color color)
        {
            Position = position;
            Normal = normal;
            Color = color;
        }
 
        static readonly VertexDeclaration VertexDeclaration = new VertexDeclaration(
            new VertexElement(0,
                VertexElementFormat.Vector3, VertexElementUsage.Position, 0),
            new VertexElement(sizeof(float) * 3,
                VertexElementFormat.Vector3, VertexElementUsage.Normal, 0),
            new VertexElement(sizeof(float) * 6,
                VertexElementFormat.Color, VertexElementUsage.Color, 0));
 
        VertexDeclaration IVertexType.VertexDeclaration { get { return VertexDeclaration; } }
    }
}
 

Game1.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
 
namespace CustomVertex
{
    class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        BasicEffect effect;
 
        MouseState mStateOld = new MouseState();
        float yaw = 0;
        float pitch = 0;
        float roll = 0;
 
        VertexPositionNormalColor[] vertices =
        {
            new VertexPositionNormalColor(new Vector3(0, 1, 0), Vector3.Backward, Color.Red),
            new VertexPositionNormalColor(new Vector3(1, 0, 0), Vector3.Backward, Color.Red),
            new VertexPositionNormalColor(new Vector3(-1, 0, 0), Vector3.Backward, Color.Red),
            new VertexPositionNormalColor(new Vector3(0, 1, 0), Vector3.Forward, Color.Blue),
            new VertexPositionNormalColor(new Vector3(-1, 0, 0), Vector3.Forward, Color.Blue),
            new VertexPositionNormalColor(new Vector3(1, 0, 0), Vector3.Forward, Color.Blue),
        };
 
        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            graphics.PreferredBackBufferWidth = 1280;
            graphics.PreferredBackBufferHeight = 720;
            IsMouseVisible = true;
        }
 
        protected override void LoadContent()
        {
            effect = new BasicEffect(GraphicsDevice)
            {
                VertexColorEnabled = true,
                View = Matrix.CreateLookAt(new Vector3(0, 0, 3), Vector3.Zero, Vector3.Up),
                Projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45),
                    GraphicsDevice.Viewport.AspectRatio, 1, 100)
            };
            effect.EnableDefaultLighting();
            base.LoadContent();
        }
 
        protected override void Update(GameTime gameTime)
        {
            KeyboardState kState = Keyboard.GetState();
            if (kState[Keys.Escape] == KeyState.Down) Exit();
 
            MouseState mState = Mouse.GetState();
            if (mState.LeftButton == ButtonState.Pressed)
            {
                yaw += MathHelper.ToRadians(mStateOld.X - mState.X);
                roll += MathHelper.ToRadians(mStateOld.Y - mState.Y);
            }
            pitch = MathHelper.ToRadians(mState.ScrollWheelValue / -10);
            effect.World = Matrix.CreateFromYawPitchRoll(yaw, pitch, roll);
            mStateOld = mState;
 
            base.Update(gameTime);
        }
 
        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            foreach (var pass in effect.CurrentTechnique.Passes)
            {
                pass.Apply();
                GraphicsDevice.DrawUserPrimitives<VertexPositionNormalColor>(
                    PrimitiveType.TriangleList, vertices, 0, vertices.Length / 3);
            }
            base.Draw(gameTime);
        }
    }
}