cocos2d-x中的尺寸之二

原创

yinchengmvp 2022-04-24 09:35:51 ©著作权

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接下来我们再做些坏事，比如给EGLView设置分辨率，代码如下：

pEGLView->setDesignResolutionSize(240, 320, kResolutionExactFit);

  CCSize size;
  size = pDirector->getWinSize();
  CCLOG("width = %f height = %f, pDirector->getWinSize", size.width, size.height);
  size = pDirector->getWinSizeInPixels();
  CCLOG("width = %f height = %f, pDirector->getWinSizeInPixels", size.width, size.height);
  size = pDirector->getVisibleSize();
  CCLOG("width = %f height = %f, pDirector->getVisibleSize", size.width, size.height);

  size = pEGLView->getFrameSize();
  CCLOG("width = %f height = %f, pEGLView->getFrameSize", size.width, size.height);
  size = pEGLView->getDesignResolutionSize();
  CCLOG("width = %f height = %f, pEGLView->getDesignResolutionSize", size.width, size.height);
  size = pEGLView->getVisibleSize();
  CCLOG("width = %f height = %f, pEGLView->getVisibleSize", size.width, size.height);

把分辨率设置为（240,320），也就是x坐标只有一半，y坐标则没变化，对其方式是ExactFit，运行效果：

cocos2d-x中的尺寸之二_赋值

这个效果是将图片做了一个拉伸，再显示在屏幕上，那么调试信息是如何的？

cocos2d-x中的尺寸之二_自定义_02

我们可以看到，pEGLView->getFrameSize不受影响，其他都变化了，为什么getFrameSize那么特殊？查看cocos2dx源代码发现，getFrameSize返回的是成员变量m_obScreenSize，而这个值在通过setFrameSize赋值之后就不会再更改了，这个值描述的是窗口在屏幕像素单位的大小，再直白点就是窗口的尺寸。

而其他的尺寸，都是依赖于程序员设置的分辨率，因为我们人为的设置了分辨率，所以其他尺寸函数返回的都是自定义的分辨率。

-------------------------------------------------------------------------------------------------------------------------------华丽的分割线

那现在我们再修改下代码，将设置分辨率的方法修改下：

pEGLView->setDesignResolutionSize(240, 320, kResolutionNoBorder);

  CCSize size;
  size = pDirector->getWinSize();
  CCLOG("width = %f height = %f, pDirector->getWinSize", size.width, size.height);
  size = pDirector->getWinSizeInPixels();
  CCLOG("width = %f height = %f, pDirector->getWinSizeInPixels", size.width, size.height);
  size = pDirector->getVisibleSize();
  CCLOG("width = %f height = %f, pDirector->getVisibleSize", size.width, size.height);

  size = pEGLView->getFrameSize();
  CCLOG("width = %f height = %f, pEGLView->getFrameSize", size.width, size.height);
  size = pEGLView->getDesignResolutionSize();
  CCLOG("width = %f height = %f, pEGLView->getDesignResolutionSize", size.width, size.height);
  size = pEGLView->getVisibleSize();
  CCLOG("width = %f height = %f, pEGLView->getVisibleSize", size.width, size.height);

  CCPoint pt = pEGLView->getVisibleOrigin();
  CCLOG("originX=%f, originY=%f", pt.x, pt.y);