Fluid-Touch Design znalazłem to.
Na dole jest informacja
I originally wrote the spring for my recent game Letterplex and transliterated it to JavaScript for this prototype. I've released the source to all of the physics simulations that Letterplex uses as Gravitas. As I'm sure you'll agree, UI that incorporates physical simulations has Gravitas.
Może skaże to jakiś♥kierunek.