This image was created by rendering 2 space filling curves using colored
arcs. One curve was based on a 5x5 grid, and the other was based on a
3x3 grid. (The curves are similiar to the Hilbert curve, which is based
on a 2x2 grid.) Both curves have the same basic "S" shape, but
because of the different grid sizes, they only come together at the center of
the image.
