IsoCurves that are Continuously Perpendicular to Surface

[ryanDaley]

sweeping_Daley.gh (30.3 KB)

I’m trying to sweep some isocurves that I made on a surface. However, I find that the isocurves are rotating in a bad way.
You can see from these two images. In the first, the perpendicular frames are aligned perfectly, so the sweep starts out correctly. However, on the otherside, the cross section is not aligned, and so I assume the isocurve is rotating in section.

As a side note, i found that the perpendicular frame component wasn’t working that well. So, I made the frame for drawing the “section curves” by evaluating the surface instead.
This, I think demonstrates how none of my perp frames of the curves are properly perpendicular.

So, how can I build isocurves that have proper perp frames?

Or else, is there another way around this issue?

[ryanDaley]

I found a workaround that is functioning pretty well:

1. I divide the isocurves into 20 points, and I use those points to evaluate the surface. 2) Then, using my method for making perp frames, I can draw a series of 20 perpendicular rectangles.
2. Finally, I loft all the rectangles together.

For now, this works, but I would like to know if there is a better way