Hi all - Intermediate Rhino user, but just venturing into Grasshopper, so I thought I set myself a simple form to generate. This is actually for a component I need. See image. In GH I can generate the ellipse ok, and the four curves (the x, y, and z dimensions of all these can be changed with slider…

[image] Jackmogden: What am I doing wrong? Not posting your GH file :exclamation: :man_facepalming: [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 thin…

[image] Jackmogden: just venturing into Grasshopper, so I thought I set myself a simple form to generate. A “simple form” is a box or cylinder or loft between curves. This doesn’t look simple, though you have a valid point if GH NetSurf behaves differently than Rhino ‘Curve Network’. I coul…

Many thanks Joseph. My GH file attached. The complicated thing is that the vertical curves are not segments of ellipses. There is a straight line down from the two ends of the ellipse (vertical length set by slider) joined to a quadrant of a circle from the ends of them meeting at the base point. T…

The cyan group contains the curves from your file. The yellow group(s) fix curve directions so they are all the same. [ellipse_form_2023Dec17a] [image] Jackmogden: Don’t worry two much about it as it more of a challenge for me than a necessity. If you don’t care then why should I? Maybe …

[Canvas at 21;21;34] Ellipse-Test2_re.gh (17.8 KB)

Thanks HS_Kim - that works perfectly. What I was trying to achieve (a finger ring with variable proportions) attached. I am sure this can be streamlined, but as I said I am just learning GH, so this was a fun start. Thanks Ellipse-NEW_re.gh (25.3 KB)

In retrospect, even though it’s not what you asked for, I think there is value in the BiArc curves approach I used yesterday so will post that file here too. [ellipse_form_2023Dec16a2] ellipse_form_2023Dec16a.gh (16.5 KB)

Elliptical+surface challenge

Grasshopper

Joseph_Oster December 16, 2023, 7:06pm 2

Not posting your GH file

3. Attach minimal versions of all the relevant files

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Elliptical+surface challenge

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