在固定寬高比的虛擬屏幕上處理輸入

Question

我在我的相機中使用虛擬屏幕分辨率，固定的放大比率。初始化看起來是這樣的：

this.cam = new OrthographicCamera(Config.VIRTUAL_VIEW_WIDTH, 
       Config.VIRTUAL_VIEW_HEIGHT); 
     this.cam.setToOrtho(false, Config.VIRTUAL_VIEW_WIDTH, 
       Config.VIRTUAL_VIEW_HEIGHT); 
     // create our stage 
     this.stage = new Stage(0, 0, true); 
     this.stage.clear(); // always clear the stage too to not get double 
          // stuff in a stage 

     stage.setCamera(cam); 
//some more stuff 
@Override 
    public void resize(int width, int height) { 
     // this.cam.setToOrtho(false, width, height); 

     // calculate new viewport 
     float aspectRatio = (float) width/(float) height; 
     float scale = 1f; 
     Vector2 crop = new Vector2(0f, 0f); 

     if (aspectRatio > Config.ASPECT_RATIO) { 
      scale = (float) height/(float) Config.VIRTUAL_VIEW_HEIGHT; 
      crop.x = (width - Config.VIRTUAL_VIEW_WIDTH * scale)/2f; 
     } else if (aspectRatio < Config.ASPECT_RATIO) { 
      scale = (float) width/(float) Config.VIRTUAL_VIEW_WIDTH; 
      crop.y = (height - Config.VIRTUAL_VIEW_HEIGHT * scale)/2f; 
     } else { 
      scale = (float) width/(float) Config.VIRTUAL_VIEW_WIDTH; 
     } 

     float w = (float) Config.VIRTUAL_VIEW_WIDTH * scale; 
     float h = (float) Config.VIRTUAL_VIEW_HEIGHT * scale; 
     viewport = new Rectangle(crop.x, crop.y, w, h); 
    } 

渲染本身是短暫的：

@Override 
public void render(float delta) { 
    cam.update(); 
    // setting the viewport 
    Gdx.gl.glViewport((int) viewport.x, (int) viewport.y, 
      (int) viewport.width, (int) viewport.height); 
    // the following code clears the screen with the given RGB color (black) 
    Gdx.gl.glClearColor(0f, 0f, 0f, 1f); 
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 

    // update and draw the stage actors 
    stage.act(delta); 
    stage.draw(); 

這工作真的很好，我可以用我的虛擬解決方案的工作。但我遇到了觸摸板的問題。我只是初始化它像這樣：

Gdx.input.setInputProcessor(stage); 

skin = new Skin(); 
     skin.add("knob", new Texture("touchpad/touchKnob.png")); 
     skin.add("background", new Texture("touchpad/touchBackground.png")); 

     style = new TouchpadStyle(); 
     // skin.add 
     style.knob = skin.getDrawable("knob"); 
     style.background = skin.getDrawable("background"); 

     pad = new Touchpad(10, style); 
     pad.setBounds(0, Config.VIRTUAL_VIEW_HEIGHT - 150, 150, 150); 
     this.stage.addActor(pad); 

如果屏幕沒有安裝到虛擬屏幕它不上的觸摸正確或者甚至不反應，因爲墊將在左上邊緣的反應，但在虛擬凸輪在reallity。

任何建議如何解決？

這是一張照片。你看到的區域永遠不會改變，所以你總能看到整個地圖。我爲觸摸板「所在」區域着色。 Menü的按鈕也遇到了同樣的問題。

Answer 1

與從其他論壇上一些幫助解決它自己。我改變了調整大小的方法，以便相機放大/縮小：

@Override 
    public void resize(int width, int height) { 
     cam.viewportHeight = height; 
     cam.viewportWidth = width; 
     if (Config.VIRTUAL_VIEW_WIDTH/cam.viewportWidth < Config.VIRTUAL_VIEW_HEIGHT 
       /cam.viewportHeight) { 
      cam.zoom = Config.VIRTUAL_VIEW_HEIGHT/cam.viewportHeight; 
     } else { 
      cam.zoom = Config.VIRTUAL_VIEW_WIDTH/cam.viewportWidth; 
     } 
     cam.update(); // update it ;) 
    }