Rhino Grasshopper adding spikes

I followed a tutorial called Kangaroo Physics Simulations - Chapter 11 | Bubble inflation | Rhino & Grasshopper Tutorial and was wondering if I can add some anchor points to it to add some spikes to it.
BALLOON 1.gh (25.1 KB)

Like this?
I don’t have a lot of experience with grasshopper, and I was surprised that you had two kangaroo solvers in series. I think that it’s not a good idea because your definition becomes too heavy. What I did was work with a very low poly mesh and then subdivided it. Hope it helps.

erase.gh (17.7 KB)


Can not open your gh file, something exploding inside…

Haha, this is cute!


Thank you for the help but I was wondering if you can show me how to activate the sphere and motions because I’m don’t have much experience with grasshopper.

Hey I was wondering if there’s a way to change the shape?