This is a small project I worked about two months ago. I was a bit lazy to make a good documentary and improve it. Honestly, I like this work much! I will keep on working on it these days. I will add more detail about it lately. Here is a video I recorded during the project(not final version), you may get a rough idea how it works. https://www.youtube.com/watch?v=2BuemklQO1Y

MonsterGame-Xiaofen Peng