Quad Cylinder，这个圆柱体和默认的圆柱区，最大的区别就是，这个生成的是4边面的，包括柱头

这个工具用来管理你的材质库，每个库都可以用一个文件夹来存放，可以快速读取材质库，也可以合并不同的材质库。使用前，先设置个材质路径。this script is intended to ease material library maintenance. you can add materials to the library and write commetns for them. you have a folder structure on your HDD, which represents material categories, and you have one file per material. so you can change structure and move materials by working with folders and files. so you need to define a working path in the code.