How can i fill holes in a NURB surface?

Hi everyone,

Is it possible to fill holes in NURB?

As if I fill a hole with cement.

Has anyone an idea?

Replies to This Discussion

Permalink Reply by David Rutten on October 7, 2013 at 6:01am

What sort of hole? A hole that is because of the nurbs surface shape or because of trimming?

Nurbs surfaces never have holes on the inside, though they can create holes if you bend them around so that two edges touch. Breps on the other hand can have trimming data which can result in any number of holes on the interior of a surface (any surface, not just nurbs surfaces).

David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Henne on October 7, 2013 at 6:30am

Oh ok sorry,

I have a bone in this is a channel inside. This is in reality as well. However, I do not want this hollow space it relates to my question. I hope it is now clearer.

Permalink Reply by David Rutten on October 7, 2013 at 6:49am

Picture would be helpful, or even the actual geometry.

David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Henne on October 7, 2013 at 7:43am

Ok,

Permalink Reply by David Rutten on October 7, 2013 at 9:29am

That doesn't look like a surface at all, that looks like a mesh. Or maybe it's a polysurface with a lot of facets. I can't tell for sure without the 3dm file.

Either way, I doubt you'll be able to automate hole removal in Grasshopper, it looks like it'll have to be a manual job.

David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Henne on October 8, 2013 at 6:23am

It is a polysurfes!

Ok shame.

regards

henne

Permalink Reply by David Rutten on October 8, 2013 at 7:42am

Using Rhino commands, here's what I do:

_ExtractSrf, and select the large top and bottom faces.
Delete the polysurface which now represents the hole.
Select all surfaces and _Join.
_Cap the joined polysurface.
_MergeAllFaces on the closed polysurface.

David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Henne on October 8, 2013 at 9:05am

Thanks a lot!!!

Permalink Reply by moose on October 16, 2015 at 8:58pm

hy henne, could you tell me, what do you do to get that image? what kind of setting i should change.....i'm nubie in rhino...please tell me>>

thank's

Permalink Reply by Nik Willmore on October 16, 2015 at 11:48pm

In Windows you can do Control-Shift-Prt Sc to do a full screen capture of the computer, then crop it in Photoshop as needed, or in Rhino, you click the viewport pop-up menu to access a view capture either to clipboard or as a file: