There is this website:
At the very end of their page, There is a 3D model of letter “D” that has some amazing mouse interactions. I was always fascinated on how can it be replicated. I recently studied about GPGPU and I am still not very sure on how I am make that effect. I want to make it for a letter “J” (maybe just make a library for it). I would really like to know if anyone is interested to explain and help me replicate this effect.