Line into face in 2D space.

Created by: Durman

I want to create algorithm that will add thickness for lines in 2D. It absents in Sverchek as I know. I imagine like this: I think Initially it is necessary to start from an analyze and understand how many neighbors have each point also it is necessary to counting angles between edges. After that it is possible to start a bypass around the mesh by edges. For first variant the pass will be 01,10 ; second 01,12,21,13,31,10, third 02,21,13,30 and 03,31,12,20. For measurement angles it is better to use angle_signed. It have unique values for all 360 degrees.