Questions 3d spaces

I have finished reading the manuel of Andy Payne and the Porous Structures pdf. 

Basically, it seems like we almost always modify surface generate on rhino. I was wondering if there was anything to generate 3d shapes, spaces.

I have seen the locust videos without understanding how it was really working. I saw small points moving and then creating meshes. I have also seen the automate cells, fractal creation. But they all seem to stay on a 2d plane. Is there anything about 3d generated space?

Could anyone give me links explaining how to generate these spaces???

thx for sharing your knowledges