unity 3D 引擎的GUI教程，pdf文件，内容丰富详细，非常适合初学者，以及进一步进阶。-unity 3D engine GUI tutorial, pdf documents, content rich detail, very suitable for beginners as well as further advanced.

一个java的开源3D引擎jmonkeyengine的cock book。挺全，不过其中用到其他开源库的部分比较麻烦，如gui。-A java open source 3D engine jmonkeyengine the cock book. Quite full, but which uses some of the other open source library of more trouble, such as gui.