Inspired by @NadiehBremer's Exploring the Art hidden in Pi, implemented in canvas.
Built with blockbuilder.org
forked from sxywu's block: Art in Pi, Experiment #1
Modified http://underscorejs.org/underscore-min.js to a secure url
https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js
https://underscorejs.org/underscore-min.js