Direction of Planar Curve Nurbs

Good evening,

I am having a super annoying issue that I just can’t solve, although it seems so simple.
I am having a curve, that I joined from two nurbs. I offset them and it works fine.
Then I cut the curve apart and offseted it again and one part changed the direction.
I tried all kinds of flipping but nothing seems to work.

Since the code is very long, I only included the important parts to see the issue. And marked the important parts red.
Thank you for any help.
K



chair problem.gh (29.8 KB)

Hi Kai,
One way to overcome this issue is to use a reference plane.