Help with modeling a twisted wall - Darya Comercial Complex

Rhino
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1

I’m trying to model the volume of the Darya Commercial Complex for an assignment, but I can’t seem to get the curve to look right. I was using the Curve Blend tool.

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2

Try BlendCrv G2.
BlendCrv.3dm (1.4 MB)

3

Why not use a mixed technique of Rhino modelling and GH?

The key step is to make the curve degree 3 with 3 aligned control points at each end, to ensure continuity:

This way, you get easier control of the sizes and proportions of the surface, then use isocurve to sample it. You can even do the entire thing in Rhino only, using ExtractIsoCurve.

PS: at the end of the video I shift the horizontal part up instead of down, but you get the idea…