AETUTS Motion动画教程 Squaring the Circle Logo Reveal Animation在AE种做Logo变形教程，很实用的教程，有一些不错的Motion基础技巧

官网：http://cgi.tutsplus.com/tutorials/squaring-the-circle-logo-reveal-animation–ae-29069In this tutorial, we will take a look at the creation of a neat logo reveal using vector animation. We will animate vertex points, rotate objects, and animate some lines. Lets get started