根底表达式AE教程 Skillshare – After Effects Size Expressions: Dynamic Text, Scaling, Images and Debugging
偏重解说AE中闭于巨细的表达式掌握，包罗sourceRectAtTime表达式、笔墨大概图片表达式的利用等
Working with sizes in expressions can be a bit of a challenge. In this class I’ll unravel some of the confusing bits about sizing and scaling content. You’ll learn how to dynamically size elements, a key aspect to building responsive templates.
