Hi,
This is based on mesh clustering. @laurent_delrieu have already provided enough information here in new forum and in old too about this. If I’m not wrong, he used C# coding and grasshopper for these. You can’t request him for the plugin or code as he already mentioned its for his personal use not for public sharing. But he is also an active member here in this forum he can provide you more insights about this more than me on this for sure if he look at this thread.
Since you recently started learning Rhino n GH first figure out all basics and move to the next level. Starting directly at this is not a good idea/move. Definitely I’m not demotivating you just a free advice. Good-luck.
Cheers,
BVR