Lloyd’s algorithm
https://gyazo.com/fc5aaf1eb43f26bd0a20ba1694641ce2
https://mfkasim91.github.io/2016/12/06/stippling-pictures-with-lloyds-algorithm/
https://github.com/mfkasim91/stippling-lloyds
#Voronoi
を使った点描アルゴリズム