3Blue1Brown's Windmill Problem
In his latest video, math YouTuber 3Blue1Brown discusses the windmill problem (IMO 2011, Problem #2). Like all his videos, this one has great visuals too. Now, I have been playing with JavaScript and friends recently, and after watching the video, I immediately wanted to do it myself. So, after two evenings of coding and debugging, here is the thing! The problem, and its ingenious solution, is discussed by Grant wonderfully in his video, so I won't repeat it here. Without further ado, enjoy the animation!