Offset direction in space - grasshopper

Hi all,
I have a list of points generated from previous steps.
In general, I have groups of 4 points in a same plane > Make closed poly-lines in each group > Offset outward those poly-lines.
However, I can not control the offset direction at final stage.
Any advice would be appreciated!
Thank you for your time! (16.0 KB)

Unify curve directions according to the given planes should work. (14.8 KB)

1 Like


Thank you @HS_Kim @seghierkhaled it works well now