Twisting Loft

[nikita-orto]

Hello, help me please. I’m new to Grasshoppers. When I try to build a loft on closed curves, between some loft it turns out normal, and between others there is a twisting of the surface. The curves are constructed as projections on the Mesh. Without the “Flatten tree” module, the surface is not built
Model.stl (1.8 MB) LOFT.gh (11.5 KB)

Thanks.

[Jakinta]

Hi,

when you adjust curve seams you should connect t output from CurveClosestPoint to t input in CurveSeam.

Sometimes it is good practice to reparamatrize curve.

Considering Loft, yes it needs flattend input to work properly.
It is always a good practice to clean tree branches with null points before Interpolating i.e. Lofting.

[nikita-orto]

Thanks for your help! Form of has become more the right, but would still not such as planned. I’ll think more.

[Regee]

Hi,

Another way to do.

LOFT_re.gh (5.9 KB)

[Joseph_Oster]

How can I renumber curves? I want to renumber the curves according to Z-axis

They Loft better when sorted, eh? But I see two areas that look ugly (twisted), even with “Align sections” enabled. Still needs work? To get a clean Loft, I added an Anemone loop (white group) after sorting them in sequence. It flips each curve and adjusts its Seam (start/end point) to match its predecessor. No Loft options required. [sort_curves_2019Jul10c] sort_curves_2019Jul10c.gh (131.8 KB) P.S. This is what Loft produces at three stages of the model. Left to right, below: …