Moi is Amazing!!!!!!!!!!!!!!! (Thank you Michael & Max (for the nodeeditor & others)

I am excited to say I was able to create my second mechanism using Moi!

it can be seen here: https://www.instagram.com/p/Cb08ycmlFmE/

I need to mention this work is inspired by Emmett Lalish (search him on youtube) & LoboCNC (search Jeff kerr on youtube)work .Note: Emmett's design consists of a five leafed iris box while LoboCNC's design is a four leafed irisbox.

Question:
I was able to do this by trial and error! ( For the designing of the leafes) Is there anyone who knows how mathematically the leaves could be designed? Does anyone know the Geometry behind it?

Edit: https://www.instagram.com/p/Cb4vUNJr_AY/ this link contains a video of the actual 3D printed iris box (The previous link is replaced!)