New to Grasshopper, but after a few hours of videos, realize it is possibly the only way to extend HISTORY far enough to derive a surface tangent to a pipe, while modifying the two underlying curves. So, I create a curve with 5 or 6 control points to get the shape eventually needed. To start with. …

An image and a GH file with as much as you can do on your own is recommended. [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…

[image] Proterio: When I use find, there is not project… You must be doing it wrong. [project]

Thank you. Now FIND shows it. Odd. Now I have a curve projected onto the pipe ) BUT, when i change the shape of the curve, it does not update. Do i have to bake the whole thing? When I right click and select bake (to layer one) nothing changes The curve was created in Rhino and then selected as…

The concept is that you post a GH file with enough geometry and code to demonstrate the issue instead of just describing it. P.S. This part of your description doesn’t make sense to me? [image] Proterio: The intersection of that projected curve on the surface of the pipe s where the tangent l…

Yes I understand. As soon as I can get that far I will post it Please keep in mind this is my first grashopping )

Perhaps this will help visualize it The tangent lines are coplanar with the extracted isocurves. The surface will be formed by lofting the vertical lines (that are tangent to the cylinder surface) The cylinder will be trimmed at the projected line [11] Ideally, there would be an infinite number…

I don’t have the patience to draw this process out slowly so wrote this. Hope it gets you started? [Tangent lines from a pipe_2020May02a] Tangent lines from a pipe_2020May02a.gh (15.0 KB)

And on both sides of the “pipe” (cylinder): [Tangent lines from a pipe_2020May02b] Tangent lines from a pipe_2020May02b.gh (14.1 KB)

Woa! Thank you! This was as far as I got… [13] [12]

Tangent lines from a pipe

Grasshopper

Joseph_Oster May 2, 2020, 3:34pm 2

An image and a GH file with as much as you can do on your own is recommended.

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Tangent lines from a pipe

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