Calendar 2015 - Loxodrome
June's calendar image is an exponential spiral on the Riemann sphere, rotated so that both poles are visible, and tiled with hexagons that seem to pop into cubes in both directions. I originally implemented it in February 2013, and today I updated it (porting it to Fragmentarium along the way). As a bonus, here's a video of the sphere rotating (flattened to 2D using stereographic projection):
You can download a high resolution Loxodrome video and the Loxodrome Fragmentarium source code.