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我有这段代码应该在窗口上绘制两个音量图标,但它不起作用。以下是相关代码:

    Texture2D vol_max;
    Vector2 vol_max_vect;
    Texture2D vol_min;
    Vector2 vol_min_vect;
    ...
    protected override void LoadContent()
    {
        // Create a new SpriteBatch, which can be used to draw textures.
        spriteBatch = new SpriteBatch(GraphicsDevice);

        vol_max = Content.Load<Texture2D>("vol_max@16");
        vol_min = Content.Load<Texture2D>("vol_min@16");
    }
    protected override void Update(GameTime gameTime)
    {
        thisKeyboard = Keyboard.GetState(PlayerIndex.One);

        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed ||
            thisKeyboard.IsKeyDown(Keys.Escape))
        {
            this.Exit();
        }

        // Update window vectors
        vol_max_vect = new Vector2(
            (float)(Window.ClientBounds.Right - 20),
            (float)(Window.ClientBounds.Bottom - 20));
        vol_min_vect = new Vector2(
            (float)(Window.ClientBounds.Right - 140),
            (float)(Window.ClientBounds.Bottom - 20));

        prevKeyboard = thisKeyboard;

        base.Update(gameTime);
    }

    protected override void Draw(GameTime gameTime)
    {
        GraphicsDevice.Clear(Color.CornflowerBlue);

        spriteBatch.Begin();
        spriteBatch.Draw(
            vol_max,
            vol_max_vect,
            Color.White);
        spriteBatch.Draw(
            vol_min,
            vol_min_vect,
            Color.White);
        spriteBatch.End();

        base.Draw(gameTime);
    }
4

1 回答 1

2

问题是 ClientBounds.Right/Bottom 位于 Windows 屏幕坐标中(其中 [0,0] 是屏幕的左上角,右下角是您的分辨率,例如 [1024, 768])。

你真正想要的是将它们绘制在你自己窗口的右下角。XNA 的 SpriteBatch 在视口坐标中绘制,其中 [0, 0] 是视口的左上角,右下角是应用程序的分辨率,例如。[800, 480]。要获得该宽度,您可以简单地使用 Window.ClientBounds.Width 代替 Window.ClientBounds.Right,并使用 Window.ClientBounds.Height 代替 Window.ClientBounds.Bottom。

希望这会有所帮助!

于 2012-05-13T03:45:54.253 回答