Greetings, I am trying to obtain the middle area (as a surface) from 4 intersecting curves. Does anyone know how to do it? [image] Thanks in advance.

if you are happy to use plugins, assuming the curves are planar, you can oneclick that with Find Regions (from Heteroptera) [image] there are also other plugins that offer a very similar component

If you want to do without plugins you can also use BBox and Surface Split. This will produce a number of patches and you’ll need to select the interior one you want: [image]

[image] Help Us Help You Grasshopper Asking questions and getting answers is what this forum is all about. Although people are generally very helpful, there are things you can do to improve your chances of getting good and quick answers. Below you will find some suggestion…

You didn’t specify if your curves are planar, though it seems like they’d be. I was going to suggest the good ol’ ‘intersect-and-shatter-all’ to then get your boundary region: [image] However I wasn’t aware of the trick shown by Daniel - love it. Cheers

Obtaining the middle surface from intersecting curves

Grasshopper

Joseph_Oster April 8, 2024, 2:05am 6

3. Attach minimal versions of all the relevant files

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Obtaining the middle surface from intersecting curves

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