How can I create this pattern?

I want to create this model in 2dimension but I can not do.
Which topic is related to it? Differential growth or voronoi puzzle?
Thank you for your help

Looks like morphing tessalating polygons perhaps?

You seem to be on the right track with differential growth applied to Vornoi cells, on this topic you can further look into curve growth, meanders, circle relaxation

Another possibility could be mesh fragmentation/clustering driven by a reaction-diffusion system or something else. Check this out.

thank you for response.

are there .gh files about it? or any tutorial which you recommend about this?

It looks like the work of @laurent_delrieu.