2 Sep 2014(Warning: these notes are rough – the main page is here and these are some notes I wrote for a few colleagues and then I kept adding to it until it became a longer page) Several people have asked me how I make the diagrams on my tutorials. I need to learn the algorithm and data structures I want to demonstrate. Sometimes I already know them. Sometimes I know nothing about them. It varies
![Making of: Introduction to A*](https://cdn-ak-scissors.b.st-hatena.com/image/square/6c89fa5f219a48d7562c70fb8478b2423ab78809/height=288;version=1;width=512/http%3A%2F%2Fwww.redblobgames.com%2Fpathfinding%2Fa-star%2Fmaking-of-2.png)