HARMONY r6 by Mr.doob

Размер кисти: f - увеличить, D - уменьшить
Цвет кисти: shift - выбор, alt - захват (пипетка)

Info - Source Code

Sketchy, Shaded, Chrome, Fur, LongFur and Web are all variations of the neighbour points connection concept.

If you like the tool, here are some buttons for you :)