Square Spiral Tiling
Space-filling squares arranged in spirals can orbit either around the spiral origin or around the fixed centers.
This Demonstration is based on a method published by Danny Calegari . The spirals depend on a pair of complex numbers, and . The set of precalculated values is determined by solving the equations
for and , where and are arbitrary integers. From the multiple solutions, suitable ones have to be selected.
 D. Calegari. "Kenyon's Squarespirals," Geometry and the Imagination (blog). (Jan 13, 2013) lamington.wordpress.com/2013/01/13/kenyons-squarespirals.