Here I used the iteration method of my earlier post “Iteration of rhombs: Filling the gap“. The petals of the rose window show different levels of iteration.
I will try to improve on this idea. The number of iterations could also depend on time, giving an animation. Quite in general such a parameter could vary on time or space. This is similar as in relativity theory where space and time can be exchanged. Please forgive me these ruminations – I am just talking to myself.