Your software seems similar to iterated function systems (IFS, e.g. Apophysis) in principle, but it's deterministic. On the philosopical side, these shapes are

Your software seems similar to iterated function systems (IFS, e.g. Apophysis) in principle, but it's deterministic. On the philosopical side, these shapes are particular kind of thought-forms, something that mind naturally creates when it's not distracted by sensory input. The forms hardly have any profound meaning - they are just art created by bored mind - but sometimes they represent sonething profound.