A Peano space-filling curve drawn with an implementation of an L-system renderer. This is different from the other curve also called Peano by some.
This curve, named Peano at least on Wikipedia and in this article about L-systems, is also named Hilbert II (in this page).
The drawing of the line is animated using Mike Bostock's stroke dash interpolation.
Modified http://d3js.org/d3.v3.min.js to a secure url