Hi All....

How do you close this open surface ?

Hi Anis,

How does this look:

Hi Mictu,

Have you check the surface tangency / smoothness connectivity ?
Looks you model build use sweep and the result is not smooth.

What do you think ?

That is correct. Sweep was used. I have not checked the surface continuity. The curve geometry is hidden, if you want to check it out.

I would do the same as above. Just join those two parts on the right, and use surface

Here's mine



But I always cheat and change the shape! Not fair.

Probably better curvature and tangency if you remove the bottom little fillet surface also. I used blend with the 2 lines so you could move the bottom line to the next one down and fool and adjust with those 2.

Hi Anis,

> Have you check the surface tangency / smoothness connectivity ?
> Looks you model build use sweep and the result is not smooth.

If you are particularly interested in the continuity, you'll probably need to use an "N-sided patch" type command to fill an area like that, which MoI does not currently have.

Like Michael was showing it is certainly possible to fill in the hole in MoI currently but if you need special characteristics for the fill you will currently have to go outside of MoI to get that accomplished.

You could use SolidWorks (I think it is the "Fill" command there?) or Rhino, where it is called "Patch".

I do expect to be able to add this functionality to MoI at some point in the future though.

- Michael

Hi Burr....

Edit the original model ?
How about this :

Hi Michael...

I know, MoI not have fill or patch feature.
The challenge is use the current tools set to get the best model !

Have a patch tool in the future is very good :)

Just by curiosity :)
Why size is the code of such libraries lacking? 100 lines of native code, 1000, 10 000 ...?

Can we see somewhere for exemple a nurbs "sweep" code?
Or it's again something who call another numerous "library"?

Is it possible to create such library from nothing or it's a very specialized conceptual hard work?
(out the fact of use specific language ;)

Hi Pilou,

> Why size is the code of such libraries lacking? 100 lines of
> native code, 1000, 10 000 ...?

The library I use is approximately 550,000 lines of code.


> Can we see somewhere for exemple a nurbs "sweep" code?
> Or it's again something who call another numerous "library"?

It's not easy to show since it is quite a bit of code involved. Also I'm not allowed to share the source code from the library, sorry!

Actually I custom wrote a replacement for about 2/3 of the code in sweep since the built in one did not do a bunch of the things that I needed.

To see some code you might check out the Ayam modeler, I think it has some NURBS code in it for sweeping.


> Is it possible to create such library from nothing or it's a very
> specialized conceptual hard work?

I guess it is always theoretically possible to create something from nothing, but it tends to be an area that is difficult to work on without a lot of experience with NURBS.


- Michael

Thx for these precisions!
From out it's always as a mysterious magical things :)