In 1965 a British Engineer named Denys Fisher invented and began selling an art toy that he called the Spirograph. The concept is simple. Gears (rotors) with holes that can accommodate the tip of a pen are rotated around the inside or outside of a stator to create geometric patterns.
I asked several variations of Stable Diffusion (v1.5 and v2.1 trained on two different datasets) to draw a spirograph pattern. As you will see, Stable Diffusion has formed a basic understanding of the Spirograph output, but fails to express its complexity. This is what Stable Diffusion 1.5 came up with:
This is what Stable Diffusion 2.1 came up with based on the first training dataset:
This is what Stable Diffusion 2.1 came up with based on the second training dataset:
This is what Stable Diffusion 2.1 came up with based on the second training dataset with a base prompt called "Pattern":
And, just for fun, Cthulhu with the same prompt (in the following order: v1.5, v2.1 first training dataset, v2.1, second training dataset, v2.1 Pattern):
These illustrations were drawn using Stable Diffusion 1.5 and Stable Diffusion 2.1.
