Nested Components Flip Direction on Divided Path in Adaptive Family

[margolina_maria_bor]

Hi everyone.

I'm trying to create an adaptive family of an arched furniture façade with slats.

I made two curves with control points driven by distance parameters between them. Then I used Divide Path based on these curves and inserted a Slat (Nested Adaptive Family) from the point on the first curve to the point on the second curve. After that, I applied Repeat.

As a result, the slats flip their direction by 180 degrees relative to the curve.

When I did the same operation along a spline curve, everything worked perfectly. However, I need exact parameters for the façade radius, and a spline doesn’t provide that precision.

How can I prevent the slats from flipping direction as they go through the points?

Image 1: Slats along the parametric curve
Image 2: Slats along the spline curve