问题描述
我是Flash / AS3的开发者，我想知道一些iPhone开发者如何在他们的游戏中使用矢量资产。
I'm Flash/AS3 developer and I'm wondering how some iPhone developers use vector assets in their games.
例如，Lil'Pirates：这个游戏看起来像基于矢量，它很容易缩放和解开，但我无法获得有关在iOS上使用矢量资产的任何信息。
For example, "Lil' Pirates": this games looks like vector-based, it's zooming and unzooming easily, but I can't get any information about using vector assets at iOS.
推荐答案
Quartz 2D是一个非常轻量级的基于矢量图形的框架。它有很好的记录......
Quartz 2D is a pretty lightweight framework for vector based graphics. It's very well documented...
特别是我要特别注意分层和性能...
In particular I'd pay particular notice to layering and performance...
如果性能令人担忧，我也会阅读通过核心动画文档。核心动画使用CALayers将使用Quartz绘制的矢量缓存到内存中的位图。然后可以通过动画API转换和翻译这些CALayers。如果你打算进行大量的绘图，这就是我推荐的路线。
If performance is a worry I'd also have a read through the core animation documentation. Core animation uses CALayers to cache vectors drawn with Quartz to in-memory bitmaps. These CALayers can then be transformed and translated through the animation APIs. If you intend to perform a lot of drawing this is the route I would recommend.
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