Grasshopper

algorithmic modeling for Rhino

Surface from Four Curves - Loft? Sweep? Planar Surface?

Hey guys, 

I'm just getting to grips with grasshopper and have come a bit stuck.

If anyone has a moment to look at my file and explain the best way to create a surface that maps to the four curves shown.


I've tried Loft, Sweep and Planar Surface.

Loft seems to get the closest, I think maybe my data tree is mixed up because things are a bit off.

Any help would be appreciated massively!

Thanks, Luca

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Hi Anna,

Try using the "Edge surface" component and feed all four of your input curves.
Maybe that will work.

Wohoo! That did the trick! Thanks ever so much. Out of interest, what would you use if there was more than 4 curves?

You mean, more that 4 curves - for 'edge curves'? I think "Patch" component will do the trick.

Loft 2 Rails should work, with two opposite curves as the rails and the other two as cross sections. This approach might get you a bit more curvature in the middle (which would be useful for a structural vault) than Edge Surface, which would probably flatten the middle a bit more. Last I tried, though, (in August) Loft 2 Rails was broken in Grasshopper, so you'd have to try it in Rhino proper.

That worked too, just as you said, with more curvature. I used the component Sweep 2. Thanks, aL

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