Urchin

A collection of scattered sticks rotate in 2D space, casting shadows on those beneath. The provided hash generates a speed, rotation distance and directly affects the number of spikes.

Over time, it's possible the sticks will align back to starting positions, although the 'mutability' factor, a small multiplier added to the rotation of each stick, makes this unlikely, leading instead to patterns as the sticks nearly align.

Hue is chosen from the hash, but applied sparingly, for a near-monochrome palette.