Interesting way to generate complex 2D drawings

'' Geometric patterns design with recursive pursuit relative motions 
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Recursion is the concept of the well-defined self-reference, and a way of specifying a process by means of itself.
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In the relative motions as the solar system, we can assume the Sun serves as the initiation of an absolute coordinate system, which does not move, and the Earth serves as the termination of a coordinate system, which orbits the Sun. Compared with relative motions, recursion is a operating mechanism that initial coordinate system orbits the termination, and the termination also re-influences the initiation.'' [source]