CATiledLayer：呈现可缩放的PDF页面 - 什么是“LevelsOfDetail”和“LevelsOfDetailBias”？ [英] CATiledLayer: Render zoomable PDF Page - what are "LevelsOfDetail" and "LevelsOfDetailBias"?

问题描述

我做了一个小演示，用于查看可缩放的PDF页面。
基本上，我Mono在 http ：//www.olivetoast.com/blog/2009/08/simple-uiscrollview-catiledlayer-pdf-example/ 。

I made a little demo for viewing a PDF page which is zoomable. Basically, I MonoTouched the example at http://www.olivetoast.com/blog/2009/08/simple-uiscrollview-catiledlayer-pdf-example/.

您可以找到我的版本在我的博客中 http://www.wildsau.net/post/2011/02/28/Simple-UIScrollView-CATiledLayer-PDF-Example-%28MonoTouch-version%29.aspx

You can find my version in my blog at http://www.wildsau.net/post/2011/02/28/Simple-UIScrollView-CATiledLayer-PDF-Example-%28MonoTouch-version%29.aspx

但是，我还没能找出 LevelsOfDetail 和 LevelsOfDetailBias 属性的CATiledLayer是为。我可以设置任何值组合，不能发现差异。苹果对房产的帮助对我没有任何解释。

However, I have not been able to figure out what "LevelsOfDetail" and "LevelsOfDetailBias" properties of CATiledLayer are for. I can set any value combination and cannot spot a difference. Apple's help on the properties doesn't explain anything to me.

有人可以解释吗？

推荐答案

此链接对 levelsOfDetail 有相当不错的解释。 在这里，您可以找到 levelsOfDetailBias 的正确解释， code>。

This link has a pretty good explanation of levelsOfDetail. Here you can find a decent explanation of levelsOfDetailBias.

这篇关于CATiledLayer：呈现可缩放的PDF页面 - 什么是“LevelsOfDetail”和“LevelsOfDetailBias”？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！