Светлини BasicEffect

резюме

Манипулирайте параметрите, свързани с леката част на BasicEffect, за да видите как се показва моделът.

Работна среда

Предпоставки

Работна среда

Как да работите с пробата

вещество

светлина

Светлините се използват за представяне на сенките на веществото. В XNA светлините не са зададени като една от настройките на околната среда, а са настроени на отделни ефекти.

В BasicEffect има три паралелни източника на светлина и всяка светлина има следните параметри:

Има и свойства, които са общи за отделните светлини.

Изображение на промяна на светлината

Изображението по-долу показва различните стойности на светлините. В пробата са активирани и трите светлини, но в изображението по-долу се използва само една светлина за показването му.

Начално състояние

Това е състоянието веднага след зареждане на примерните данни на модела.

Дифузна цветова модификация

Промяна на дифузния цвят на светлината. Тъй като червеното и синьото са настроени на 0, а зеленото на 1, само зелената част на модела е подчертана. (Червеното и синьото също са слабо видими, но това се дължи на околната светлина.)

Промяна на цвета на огледалото

Промяна на цвета на отразената светлина. Тъй като е зададено само зелено, цветът на отразяващата част е само зеленият елемент.

Промяна на посоката

Можете да промените посоката на светлината, като промените посоката. Обикновено се използва само ориентация, така че векторът се нормализира.

Промяна на цвета на AmbientLightColor

Червените и сините околни светлини са максимизирани, а зелените са настроени на 0. Ако погледнете областите, където светлината не свети, можете ясно да видите разликата между зелени, червени и сини нюанси.

PreferPerPixelLighting модификация

Задайте PreferPerPixelLighting на True, за да позволите изчисления на осветлението пиксел по пиксел. Трудно е да се види на диаграмата, но в случай на осветление на ниво връх, границите на полигоните са някак видими, но в случай на осветление пиксел по пиксел могат да бъдат изразени много гладки сенки.

Между другото, не можете да използвате свойството PreferPerPixelLighting, ако не поддържате пикселен шейдър 2.0. Също така, ако използвате няколко светлини, може да изглежда странно.

Осветление на върхаОсветление на пиксел

Дефиниции на класове параметри за светлини

Тъй като BasicEffect може да има множество светлини, създадохме клас за задаване на светлинни параметри. Параметрите са същите като тези, които могат да бъдат зададени за светлина BasicEffect (BasicDirectionalLight).

/// <summary>
/// ライトパラメータ
/// </summary>
public class LightParameter
{
    /// <summary>
    /// ライト有効フラグ
    /// </summary>
    public bool Enabled;

    /// <summary>
    /// ディフューズカラー
    /// </summary>
    public Vector3 DiffuseColor;

    /// <summary>
    /// スペキュラーカラー
    /// </summary>
    public Vector3 SpecularColor;

    /// <summary>
    /// ライトの方向
    /// </summary>
    public Vector3 Direction;
}

поле

Определя параметрите, необходими за настройване на светлината. Тъй като можете да зададете три светлини за светлини, броят на елементите в масива също е три. Другите полета се използват за операции в менюто, показване на символи и т.н., така че моля, вижте пълния код.

/// <summary>
/// 選択しているライトのインデックス
/// </summary>
private int selectedLightIndex = 0;

/// <summary>
/// ライトのパラメータ
/// </summary>
private LightParameter[] lightParameters = new LightParameter[]
    {
        new LightParameter(),
        new LightParameter(),
        new LightParameter()
    };

/// <summary>
/// アンビエントカラー
/// </summary>
private Vector3 ambientLightColor = Vector3.Zero;

/// <summary>
/// ピクセル単位のライティング
/// </summary>
private bool isPreferPerPixelLighting = false;

Придобиване на запис по подразбиране

Методът BasicEffect.EnableDefaultLighting задава параметрите на светлината, определени от XNA Framework, на ефект. Получаваме тази стойност, за да я задържим в полето веднъж. (В извадката тя е под формата на придобиване многократно, но е опростена, защото ще бъде дълга, ако напишете код, за да я придобиете отделно.)

// ライトとビュー、プロジェクションはあらかじめ設定しておく
foreach (ModelMesh mesh in this.model.Meshes)
{
    foreach (BasicEffect effect in mesh.Effects)
    {
        // デフォルトのライト適用
        effect.EnableDefaultLighting();

        // ビューマトリックスをあらかじめ設定 ((0, 0, 8) から原点を見る)
        effect.View = Matrix.CreateLookAt(
            new Vector3(0.0f, 0.0f, 8.0f),
            Vector3.Zero,
            Vector3.Up
        );

        // プロジェクションマトリックスをあらかじめ設定
        effect.Projection = Matrix.CreatePerspectiveFieldOfView(
            MathHelper.ToRadians(45.0f),
            (float)this.GraphicsDevice.Viewport.Width /
                (float)this.GraphicsDevice.Viewport.Height,
            1.0f,
            100.0f
        );

        // デフォルトのパラメータを受け取る
        this.lightParameters[0].Enabled = effect.DirectionalLight0.Enabled;
        this.lightParameters[0].DiffuseColor = effect.DirectionalLight0.DiffuseColor;
        this.lightParameters[0].SpecularColor = effect.DirectionalLight0.SpecularColor;
        this.lightParameters[0].Direction = effect.DirectionalLight0.Direction;

        this.lightParameters[1].Enabled = effect.DirectionalLight1.Enabled;
        this.lightParameters[1].DiffuseColor = effect.DirectionalLight1.DiffuseColor;
        this.lightParameters[1].SpecularColor = effect.DirectionalLight1.SpecularColor;
        this.lightParameters[1].Direction = effect.DirectionalLight1.Direction;

        this.lightParameters[2].Enabled = effect.DirectionalLight2.Enabled;
        this.lightParameters[2].DiffuseColor = effect.DirectionalLight2.DiffuseColor;
        this.lightParameters[2].SpecularColor = effect.DirectionalLight2.SpecularColor;
        this.lightParameters[2].Direction = effect.DirectionalLight2.Direction;

        // アンビエントカラー
        this.ambientLightColor = effect.AmbientLightColor;

        // ピクセル単位のライティング
        this.isPreferPerPixelLighting = effect.PreferPerPixelLighting;
    }
}

Настройване на светлините

Задавам светлина на BasicEffect на модела. Стойността просто се задава на светлинния параметър на BasicEffect. За кода на операцията за промяна на светлинния параметър, моля, вижте пълния код отделно.

foreach (ModelMesh mesh in this.model.Meshes)
{
    foreach (BasicEffect effect in mesh.Effects)
    {
        for (int i = 0; i < this.lightParameters.Length; i++)
        {
            // ライトを取得
            BasicDirectionalLight light = null;

            switch (i)
            {
                case 0:
                    light = effect.DirectionalLight0;
                    break;
                case 1:
                    light = effect.DirectionalLight1;
                    break;
                case 2:
                    light = effect.DirectionalLight2;
                    break;
            }

            // ライト有効フラグ
            light.Enabled = this.lightParameters[i].Enabled;

            // ライトのディフーズカラー
            light.DiffuseColor = this.lightParameters[i].DiffuseColor;

            // ライトのスペキュラーカラー
            light.SpecularColor = this.lightParameters[i].SpecularColor;

            // ライトの方向
            light.Direction = this.lightParameters[i].Direction;
        }

        // アンビエントカラー
        effect.AmbientLightColor = this.ambientLightColor;

        // ピクセル単位のライティング
        effect.PreferPerPixelLighting = this.isPreferPerPixelLighting;

    }
}

BasicEffect.DirectionalLight0 свойство

BasicEffect.DirectionalLight1 свойство

BasicEffect.DirectionalLight2 свойство

BasicEffect.AmbientLightColor свойство

BasicEffect.PreferPerPixelLighting свойство

BasicDirectionalLight.Enabled свойство

BasicDirectionalLight.DiffuseColor свойство

BasicDirectionalLight.SpecularColor свойство

BasicDirectionalLight.Direction свойство

Всички кодове

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
#if WINDOWS_PHONE
using Microsoft.Xna.Framework.Input.Touch;
#endif

namespace BasicEffectLight
{
    /// <summary>
    /// ゲームメインクラス
    /// </summary>
    public class GameMain : Microsoft.Xna.Framework.Game
    {
        /// <summary>
        /// ライトパラメータ
        /// </summary>
        public class LightParameter
        {
            /// <summary>
            /// ライト有効フラグ
            /// </summary>
            public bool Enabled;

            /// <summary>
            /// ディフューズカラー
            /// </summary>
            public Vector3 DiffuseColor;

            /// <summary>
            /// スペキュラーカラー
            /// </summary>
            public Vector3 SpecularColor;

            /// <summary>
            /// ライトの方向
            /// </summary>
            public Vector3 Direction;
        }

        /// <summary>
        /// グラフィックデバイス管理クラス
        /// </summary>
        private GraphicsDeviceManager graphics = null;

        /// <summary>
        /// スプライトのバッチ化クラス
        /// </summary>
        private SpriteBatch spriteBatch = null;

        /// <summary>
        /// スプライトでテキストを描画するためのフォント
        /// </summary>
        private SpriteFont font = null;

        /// <summary>
        /// 直前のキーボード入力の状態
        /// </summary>
        private KeyboardState oldKeyboardState = new KeyboardState();

        /// <summary>
        /// 直前のマウスの状態
        /// </summary>
        private MouseState oldMouseState = new MouseState();

        /// <summary>
        /// 直前のゲームパッド入力の状態
        /// </summary>
        private GamePadState oldGamePadState = new GamePadState();

        /// <summary>
        /// モデル
        /// </summary>
        private Model model = null;

        /// <summary>
        /// 選択しているメニューのインデックス
        /// </summary>
        private int selectedMenuIndex = 0;

        /// <summary>
        /// 選択しているライトのインデックス
        /// </summary>
        private int selectedLightIndex = 0;

        /// <summary>
        /// ライトのパラメータ
        /// </summary>
        private LightParameter[] lightParameters = new LightParameter[]
            {
                new LightParameter(),
                new LightParameter(),
                new LightParameter()
            };

        /// <summary>
        /// アンビエントカラー
        /// </summary>
        private Vector3 ambientLightColor = Vector3.Zero;

        /// <summary>
        /// ピクセル単位のライティング
        /// </summary>
        private bool isPreferPerPixelLighting = false;

        /// <summary>
        /// パラメータの最大数
        /// </summary>
        private static int MaxParameterCount = 15;

        /// <summary>
        /// メニューリスト
        /// </summary>
        private static string[] MenuNameList = new string[]
            {
                "LightIndex",
                "Light Enable",
                "DiffuseColor (Red)",
                "DiffuseColor (Green)",
                "DiffuseColor (Blue)",
                "SpecularColor (Red)",
                "SpecularColor (Green)",
                "SpecularColor (Blue)",
                "Direction X",
                "Direction Y",
                "Direction Z",
                "AmbientLightColor (Red)",
                "AmbientLightColor (Green)",
                "AmbientLightColor (Blue)",
                "PreferPerPixelLighting",
            };

        /// <summary>
        /// パラメータテキストリスト
        /// </summary>
        private string[] parameters = new string[MaxParameterCount];


        /// <summary>
        /// GameMain コンストラクタ
        /// </summary>
        public GameMain()
        {
            // グラフィックデバイス管理クラスの作成
            this.graphics = new GraphicsDeviceManager(this);

            // ゲームコンテンツのルートディレクトリを設定
            this.Content.RootDirectory = "Content";

#if WINDOWS_PHONE
            // Windows Phone のデフォルトのフレームレートは 30 FPS
            this.TargetElapsedTime = TimeSpan.FromTicks(333333);

            // バックバッファサイズの設定
            this.graphics.PreferredBackBufferWidth = 480;
            this.graphics.PreferredBackBufferHeight = 800;

            // フルスクリーン表示
            this.graphics.IsFullScreen = true;
#endif

            // ウインドウ上でマウスのポインタを表示するようにする
            this.IsMouseVisible = true;
        }

        /// <summary>
        /// ゲームが始まる前の初期化処理を行うメソッド
        /// グラフィック以外のデータの読み込み、コンポーネントの初期化を行う
        /// </summary>
        protected override void Initialize()
        {
            // TODO: ここに初期化ロジックを書いてください

            // コンポーネントの初期化などを行います
            base.Initialize();
        }

        /// <summary>
        /// ゲームが始まるときに一回だけ呼ばれ
        /// すべてのゲームコンテンツを読み込みます
        /// </summary>
        protected override void LoadContent()
        {
            // テクスチャーを描画するためのスプライトバッチクラスを作成します
            this.spriteBatch = new SpriteBatch(this.GraphicsDevice);

            // フォントをコンテンツパイプラインから読み込む
            this.font = this.Content.Load<SpriteFont>("Font");

            // モデルを作成
            this.model = this.Content.Load<Model>("Model");

            // ライトとビュー、プロジェクションはあらかじめ設定しておく
            foreach (ModelMesh mesh in this.model.Meshes)
            {
                foreach (BasicEffect effect in mesh.Effects)
                {
                    // デフォルトのライト適用
                    effect.EnableDefaultLighting();

                    // ビューマトリックスをあらかじめ設定 ((0, 0, 8) から原点を見る)
                    effect.View = Matrix.CreateLookAt(
                        new Vector3(0.0f, 0.0f, 8.0f),
                        Vector3.Zero,
                        Vector3.Up
                    );

                    // プロジェクションマトリックスをあらかじめ設定
                    effect.Projection = Matrix.CreatePerspectiveFieldOfView(
                        MathHelper.ToRadians(45.0f),
                        (float)this.GraphicsDevice.Viewport.Width /
                            (float)this.GraphicsDevice.Viewport.Height,
                        1.0f,
                        100.0f
                    );

                    // デフォルトのパラメータを受け取る
                    this.lightParameters[0].Enabled = effect.DirectionalLight0.Enabled;
                    this.lightParameters[0].DiffuseColor = effect.DirectionalLight0.DiffuseColor;
                    this.lightParameters[0].SpecularColor = effect.DirectionalLight0.SpecularColor;
                    this.lightParameters[0].Direction = effect.DirectionalLight0.Direction;

                    this.lightParameters[1].Enabled = effect.DirectionalLight1.Enabled;
                    this.lightParameters[1].DiffuseColor = effect.DirectionalLight1.DiffuseColor;
                    this.lightParameters[1].SpecularColor = effect.DirectionalLight1.SpecularColor;
                    this.lightParameters[1].Direction = effect.DirectionalLight1.Direction;

                    this.lightParameters[2].Enabled = effect.DirectionalLight2.Enabled;
                    this.lightParameters[2].DiffuseColor = effect.DirectionalLight2.DiffuseColor;
                    this.lightParameters[2].SpecularColor = effect.DirectionalLight2.SpecularColor;
                    this.lightParameters[2].Direction = effect.DirectionalLight2.Direction;

                    // アンビエントカラー
                    this.ambientLightColor = effect.AmbientLightColor;

                    // ピクセル単位のライティング
                    this.isPreferPerPixelLighting = effect.PreferPerPixelLighting;
                }
            }
        }

        /// <summary>
        /// ゲームが終了するときに一回だけ呼ばれ
        /// すべてのゲームコンテンツをアンロードします
        /// </summary>
        protected override void UnloadContent()
        {
            // TODO: ContentManager で管理されていないコンテンツを
            //       ここでアンロードしてください
        }

        /// <summary>
        /// 描画以外のデータ更新等の処理を行うメソッド
        /// 主に入力処理、衝突判定などの物理計算、オーディオの再生など
        /// </summary>
        /// <param name="gameTime">このメソッドが呼ばれたときのゲーム時間</param>
        protected override void Update(GameTime gameTime)
        {
            // 入力デバイスの状態取得
            KeyboardState keyboardState = Keyboard.GetState();
            MouseState mouseState = Mouse.GetState();
            GamePadState gamePadState = GamePad.GetState(PlayerIndex.One);

            // Xbox 360 コントローラ、Windows Phone の BACK ボタンを押したときに
            // ゲームを終了させます
            if (gamePadState.Buttons.Back == ButtonState.Pressed)
            {
                this.Exit();
            }

            // メニューの選択
            if ((keyboardState.IsKeyDown(Keys.Up) && this.oldKeyboardState.IsKeyUp(Keys.Up)) ||
                (gamePadState.ThumbSticks.Left.Y >= 0.5f &&
                    this.oldGamePadState.ThumbSticks.Left.Y < 0.5f))
            {
                // 選択メニューをひとつ上に移動
                this.selectedMenuIndex =
                    (this.selectedMenuIndex + this.parameters.Length - 1) % this.parameters.Length;
            }
            if ((keyboardState.IsKeyDown(Keys.Down) && this.oldKeyboardState.IsKeyUp(Keys.Down)) ||
                (gamePadState.ThumbSticks.Left.Y <= -0.5f &&
                    this.oldGamePadState.ThumbSticks.Left.Y > -0.5f) ||
                (this.oldMouseState.LeftButton == ButtonState.Pressed &&
                 mouseState.LeftButton == ButtonState.Released))
            {
                // 選択メニューをひとつ下に移動
                this.selectedMenuIndex =
                    (this.selectedMenuIndex + this.parameters.Length + 1) % this.parameters.Length;
            }

            // 各マテリアルの値を操作
            float moveValue = 0.0f;
            if (keyboardState.IsKeyDown(Keys.Left))
            {
                moveValue -= (float)gameTime.ElapsedGameTime.TotalSeconds;
            }
            if (keyboardState.IsKeyDown(Keys.Right))
            {
                moveValue += (float)gameTime.ElapsedGameTime.TotalSeconds;
            }
            if (mouseState.LeftButton == ButtonState.Pressed)
            {
                moveValue += (mouseState.X - this.oldMouseState.X) * 0.005f;
            }
            if (gamePadState.IsConnected)
            {
                moveValue += gamePadState.ThumbSticks.Left.X *
                             (float)gameTime.ElapsedGameTime.TotalSeconds;
            }

            if (moveValue != 0.0f)
            {
                LightParameter selectedLight = this.lightParameters[this.selectedLightIndex];

                switch (this.selectedMenuIndex)
                {
                    case 0:
                        // ライトのインデックス
                        if ((keyboardState.IsKeyDown(Keys.Left) &&
                                this.oldKeyboardState.IsKeyUp(Keys.Left)) ||
                            (mouseState.LeftButton == ButtonState.Pressed &&
                                (mouseState.X - this.oldMouseState.X) >= 5) ||
                            (gamePadState.ThumbSticks.Left.X >= 0.5f &&
                                this.oldGamePadState.ThumbSticks.Left.X < 0.5f))
                        {
                            // ライトのインデックスをひとつ減らす
                            this.selectedLightIndex =
                                (this.selectedLightIndex + this.lightParameters.Length - 1) %
                                    this.lightParameters.Length;
                        }
                        if ((keyboardState.IsKeyDown(Keys.Right) &&
                                this.oldKeyboardState.IsKeyUp(Keys.Right)) ||
                            (mouseState.LeftButton == ButtonState.Pressed &&
                                (mouseState.X - this.oldMouseState.X) <= -5) ||
                            (gamePadState.ThumbSticks.Left.X <= -0.5f &&
                                this.oldGamePadState.ThumbSticks.Left.X > -0.5f))
                        {
                            // ライトのインデックスをひとつ増やす
                            this.selectedLightIndex =
                                (this.selectedLightIndex + this.lightParameters.Length + 1) %
                                    this.lightParameters.Length;
                        }
                        if (mouseState.LeftButton == ButtonState.Pressed)
                        {
                            this.selectedLightIndex = (int)(
                                MathHelper.Clamp((float)mouseState.X / this.GraphicsDevice.Viewport.Width * 3, 0, 2));
                        }
                        break;
                    case 1:
                        // ライト有効フラグ
                        selectedLight.Enabled = (moveValue > 0.0f);
                        break;
                    case 2:
                        // ライトのディフーズカラー(赤)
                        Vector3 diffuseX = selectedLight.DiffuseColor;
                        diffuseX.X = MathHelper.Clamp(diffuseX.X + moveValue, 0.0f, 1.0f);
                        selectedLight.DiffuseColor = diffuseX;
                        break;
                    case 3:
                        // ライトのディフーズカラー(緑)
                        Vector3 diffuseY = selectedLight.DiffuseColor;
                        diffuseY.Y = MathHelper.Clamp(diffuseY.Y + moveValue, 0.0f, 1.0f);
                        selectedLight.DiffuseColor = diffuseY;
                        break;
                    case 4:
                        // ライトのディフーズカラー(青)
                        Vector3 diffuseZ = selectedLight.DiffuseColor;
                        diffuseZ.Z = MathHelper.Clamp(diffuseZ.Z + moveValue, 0.0f, 1.0f);
                        selectedLight.DiffuseColor = diffuseZ;
                        break;
                    case 5:
                        // ライトのスペキュラーカラー(赤)
                        Vector3 specularX = selectedLight.SpecularColor;
                        specularX.X = MathHelper.Clamp(specularX.X + moveValue, 0.0f, 1.0f);
                        selectedLight.SpecularColor = specularX;
                        break;
                    case 6:
                        // ライトのスペキュラーカラー(緑)
                        Vector3 specularY = selectedLight.SpecularColor;
                        specularY.Y = MathHelper.Clamp(specularY.Y + moveValue, 0.0f, 1.0f);
                        selectedLight.SpecularColor = specularY;
                        break;
                    case 7:
                        // ライトのスペキュラーカラー(青)
                        Vector3 specularZ = selectedLight.SpecularColor;
                        specularZ.Z = MathHelper.Clamp(specularZ.Z + moveValue, 0.0f, 1.0f);
                        selectedLight.SpecularColor = specularZ;
                        break;
                    case 8:
                        // ライトの方向X
                        Vector3 directionX = selectedLight.Direction;
                        directionX.X += moveValue;
                        selectedLight.Direction = directionX;
                        break;
                    case 9:
                        // ライトの方向Y
                        Vector3 directionY = selectedLight.Direction;
                        directionY.Y += moveValue;
                        selectedLight.Direction = directionY;
                        break;
                    case 10:
                        // ライトの方向Z
                        Vector3 directionZ = selectedLight.Direction;
                        directionZ.Z += moveValue;
                        selectedLight.Direction = directionZ;
                        break;
                    case 11:
                        // アンビエントカラー(赤)
                        this.ambientLightColor.X =
                            MathHelper.Clamp(this.ambientLightColor.X + moveValue, 0.0f, 1.0f);
                        break;
                    case 12:
                        // アンビエントカラー(緑)
                        this.ambientLightColor.Y =
                            MathHelper.Clamp(this.ambientLightColor.Y + moveValue, 0.0f, 1.0f);
                        break;
                    case 13:
                        // アンビエントカラー(青)
                        this.ambientLightColor.Z =
                            MathHelper.Clamp(this.ambientLightColor.Z + moveValue, 0.0f, 1.0f);
                        break;
                    case 14:
                        // ピクセル単位のライティング
                        this.isPreferPerPixelLighting = (moveValue > 0.0f);
                        break;
                }
            }

            // ライトを設定
            foreach (ModelMesh mesh in this.model.Meshes)
            {
                foreach (BasicEffect effect in mesh.Effects)
                {
                    for (int i = 0; i < this.lightParameters.Length; i++)
                    {
                        // ライトを取得
                        DirectionalLight light = null;

                        switch (i)
                        {
                            case 0:
                                light = effect.DirectionalLight0;
                                break;
                            case 1:
                                light = effect.DirectionalLight1;
                                break;
                            case 2:
                                light = effect.DirectionalLight2;
                                break;
                        }

                        // ライト有効フラグ
                        light.Enabled = this.lightParameters[i].Enabled;

                        // ライトのディフーズカラー
                        light.DiffuseColor = this.lightParameters[i].DiffuseColor;

                        // ライトのスペキュラーカラー
                        light.SpecularColor = this.lightParameters[i].SpecularColor;

                        // ライトの方向
                        light.Direction = this.lightParameters[i].Direction;
                    }

                    // アンビエントカラー
                    effect.AmbientLightColor = this.ambientLightColor;

                    // ピクセル単位のライティング
                    effect.PreferPerPixelLighting = this.isPreferPerPixelLighting;

                }
            }

            // 入力情報を記憶
            this.oldKeyboardState = keyboardState;
            this.oldMouseState = mouseState;
            this.oldGamePadState = gamePadState;

            // 登録された GameComponent を更新する
            base.Update(gameTime);
        }

        /// <summary>
        /// 描画処理を行うメソッド
        /// </summary>
        /// <param name="gameTime">このメソッドが呼ばれたときのゲーム時間</param>
        protected override void Draw(GameTime gameTime)
        {
            // 画面を指定した色でクリアします
            this.GraphicsDevice.Clear(Color.CornflowerBlue);

            // 深度バッファを有効にする
            this.GraphicsDevice.DepthStencilState = DepthStencilState.Default;

            // モデルを描画
            foreach (ModelMesh mesh in this.model.Meshes)
            {
#if WINDOWS_PHONE
                foreach (BasicEffect effect in mesh.Effects)
                {
                    effect.World = Matrix.CreateRotationZ(-MathHelper.PiOver2);
                }
#endif

                mesh.Draw();
            }

            // スプライトの描画準備
            this.spriteBatch.Begin();

            // 操作
            this.spriteBatch.DrawString(this.font,
                "Up, Down : Select Menu",
                new Vector2(20.0f, 20.0f), Color.White);
            this.spriteBatch.DrawString(this.font,
                "Left, right : Change Value",
                new Vector2(20.0f, 45.0f), Color.White);
            this.spriteBatch.DrawString(this.font,
                "MouseClick & Drag :",
                new Vector2(20.0f, 70.0f), Color.White);
            this.spriteBatch.DrawString(this.font,
                "    Select Menu & Change Value",
                new Vector2(20.0f, 95.0f), Color.White);

            // 各メニュー //
            for (int i = 0; i < MenuNameList.Length; i++)
            {
                this.spriteBatch.DrawString(this.font,
                    MenuNameList[i],
                    new Vector2(40.0f, 120.0f + i * 20.0f), Color.White);
            }

            // 各パラメータ //

            LightParameter selectedLight = this.lightParameters[this.selectedLightIndex];

            // ライトのインデックス
            this.parameters[0] = this.selectedLightIndex.ToString();

            // ライトの有効フラグ
            this.parameters[1] = selectedLight.Enabled.ToString();

            // ライトのディフーズカラー(赤)
            this.parameters[2] = selectedLight.DiffuseColor.X.ToString();

            // ライトのディフーズカラー(緑)
            this.parameters[3] = selectedLight.DiffuseColor.Y.ToString();

            // ライトのディフーズカラー(青)
            this.parameters[4] = selectedLight.DiffuseColor.Z.ToString();

            // ライトのスペキュラーカラー(赤)
            this.parameters[5] = selectedLight.SpecularColor.X.ToString();

            // ライトのスペキュラーカラー(緑)
            this.parameters[6] = selectedLight.SpecularColor.Y.ToString();

            // ライトのスペキュラーカラー(青)
            this.parameters[7] = selectedLight.SpecularColor.Z.ToString();

            // ライトの方向X
            this.parameters[8] = selectedLight.Direction.X.ToString();

            // ライトの方向Y
            this.parameters[9] = selectedLight.Direction.Y.ToString();

            // ライトの方向Z
            this.parameters[10] = selectedLight.Direction.Z.ToString();

            // アンビエントカラー(赤)
            this.parameters[11] = this.ambientLightColor.X.ToString();

            // アンビエントカラー(緑)
            this.parameters[12] = this.ambientLightColor.Y.ToString();

            // アンビエントカラー(青)
            this.parameters[13] = this.ambientLightColor.Z.ToString();

            // ピクセル単位のライティング
            this.parameters[14] = this.isPreferPerPixelLighting.ToString();


            for (int i = 0; i < this.parameters.Length; i++)
            {
                this.spriteBatch.DrawString(this.font,
                    this.parameters[i],
                    new Vector2(300.0f, 120.0f + i * 20.0f), Color.White);
            }

            // 選択インデックス
            this.spriteBatch.DrawString(this.font, "*",
                new Vector2(20.0f, 124.0f + this.selectedMenuIndex * 20.0f), Color.White);

            // スプライトの一括描画
            this.spriteBatch.End();

            // 登録された DrawableGameComponent を描画する
            base.Draw(gameTime);
        }
    }
}