Digital funnel

Description:

File was saved in 2.79-RC. You must have sverchok addon installed. File using HDR image from HDRi pack by zbyg 3 (https://zbyg.deviantart.com/art/HDRi-Pack-3-112847728)

Here's .blend file of this project https://gfycat.com/FixedDenseIberianlynx that was featured recently at r/blender community. Whole Sverchok node-tree is filled with notes, where I tried to explain and comment what each node do. Still I'd encourage you to check official documentation.