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I'm not easily impressed, but this time I truly am extremely impressed, the model you see below I created in Silo.
I exported the base mesh from Silo as an *obj file and imported it into Rhino, then I converted the model to T-Splines and after that to NURBS

Below you can see the result:

Silo work space:


imported into Rhino and converted:




and the very clean NURBS model:

Truly impressive.

Okay, this is what Amapi (beta8 beter than 7.52) also does since quite an amont of time.
The question is: Do you need to have only quads on the polygonal mesh ?
(because tris sided lead to awful results)

wow

That's sweet lookin' how can it get so clean as nurbs ? what's the process to convert polys to nurbs like that ?! please explain further if you don't mind.

/ Max

You can smooth with catmull clark (in example) or ask a nurbs smoothing
and then you can revert or ask to convert to real nurbs, then it's really cool to boolean.

Yeah, Tsplines have become extremely powerful for conversion from subdivison surfaces. Even Ngons are supported. http://www.youtube.com/watch?v=g1XFc_cDakE

That is just so cool and useful, wow! i have to try the demo if there is one.. hope so.

/ Max

Hi Nico! T-Splines are interesting... Haven't had time to try the plug-in myself, though. Is it possible to get single span surfaces in that polysurface in Rhino (In this case that would probably be degree 3 with 4 control points in both directions) - or are the converted T-Spline NURBS always degree 3 (like network srfs in Rhino) with as many control points as needed (not necessarily single span surfaces)? Impossible to tell, when you don't have your isocurves visible...
Thanks!

Philip

I see a problem on the side of the chair.
Like a bad "Gordon surface.".
The topology is not totally respected.

Hey Piem, I'm not sure if you can only use quads, it might be..
about the topology not being exact, that's no problem because the mesh is fully editable after importing into Rhino/T-Splines

Hey Max, below is a small tut

Hey Philip, here are some screens that shows the control points after import, as you can see it's very easy to manipulate afterwards



Small TUT:


Import *.obj and click Convert to T-Spline button


Select your Object and press enter


As you can see it's converted to T-Splines


And fully editable

I think the cool thing is that you can quickly rough out a shape in polygons and then add all the detail like fillets and holes and such in Rhino.
This really should be included in the Rhino toolset!

Hi all,

If I may ask. T-splines seem great for poly-to-nurbs conversions but does anyone know of a clean way to export nurbs to say 3ds max? I played with rhino at my old job a long time ago and converted or exporting nurbs was my main gripe. I'd like to invest in rhino but I mainly work through max to set up and render my scenes.

Luis

Thanks for the quick and easy tutorial Nico, i have to say it looks like a one-button solution to do that. sweet!

lsega: Sure, but don't use Rhino's horrible meshing for that. Instead download Moi3D and export nurbs objects from that to your other apps. It has ALOT better meshing output.

/ Max

Thanks Nico for the additional screen shots! Very interesting! The surfaces do not seem to be single span - that would have been to difficult to do automatically anyway, I guess... Great nevertheless! I have to download the beta when I get some time...

Philip