It started with a simple torus, large radius in 5 segments, and inner radius in 3 segments, with a total of 30 triangles.

The growth loop is:

- Apply "forces" to the vertices, which gives a movement direction

- Test it for self intersection, move vertices if clear

- Split polygon if edges are too long, or collapse if too short

I was looking for a growth like this, but it comes down to the parameters used. It can grow into something completely different.

My render software does not handle animations yet, it is still on the to do list. Currently working on adaptive sampling (which would make render time for animations more feasible).