Orrery 4: Only The Fit Survive

Extending my exploration of randomness. Reducing the mutation values to two-one-thousandths of their previous values yields almost perfect figures, but nine out of ten fail to reconnect at the end of the orbit. By comparing moonlet positions at start and end and writing out only those where the absolute x + y delta is < 2 pixels, I can render out about three "successful" slightly-mutated figures per minute.