I don't know How to make surface through various points.

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Permalink Reply by peter fotiadis on June 19, 2014 at 2:03am

Post the definition (if not ... try the patch component and/or trim the nurbs in case that the component fails to do it).

See this as well (lot's of points > ... > nurbs)

https://www.google.com/url?q=http://www.grasshopper3d.com/xn/detail...

Permalink Reply by David Rutten on June 19, 2014 at 2:41am

Freeform surfaces are almost always nurbs surfaces in Rhino. Nurbs surfaces are defined by a rectangular grid of control-points. If you have a grid of points, you can either use them directly as control-points, or you can use them as interpolation points. The image you uploaded shows an incomplete rectangular grid. That means you cannot use it as control-point or interpolation input. You have two options:

1. Re-instate the missing points, create a nurbs surface and then trim the result to only that part you care about, or
2. Create a Patch surface.

Patch can handle non-rectangular input, however it doesn't guarantee that the surface will in fact intersect all the points. And you will still have to trim it afterwards.

--

David Rutten

david@mcneel.com

Permalink Reply by peter fotiadis on June 19, 2014 at 3:37am

Indeed Patch has some minus points (but I can think a lot of "artistic" cases where a well defined grid is not available, not even theoretically).

Anyway here's a small Patch test.

PS: attempting to split ("trim") the nurbs with the projected boundary curve caused 3 sequential crashes:

Attachments:

• Nurbs-from-points.gh, 49 KB

Permalink Reply by Jissi Choi on June 20, 2014 at 12:04am

You need to untrim the source surface and retrim the target surface earned by translating points..

Here is quick images from your definition..