How to add nurbs curves together?

Hi all,

I am trying to add nurbs curves together to i can extrude them together. Later I am going to add curves together to make a surface. I have tried in vain to do this for a few days now.

Any tips?


You mean Join? And you mean programmatically? How? If so it might be a good idea to learn the basics of how to actually use Rhino first…

Hi Jim,

Yes sorry I mean join the curves together. I am fairly adept at using Rhino and Python but am new at using the Rhino3dM package for working with Rhino programmatically.


Hi @AliLee,

If you are using Rhino3dm .NET, the use Curve.JoinCurves.

– Dale

Hi @dale , I’m using the last version of Rhino3dm .NET and that method is not available. In fact, many methods are missing.

Hi @Eduardo_Di_Loreto,

Yes I see that - I should have looked closer. I’ve created an issue so we can get something added in the future.

Keep in mind that Rhino3dm .NET is not RhinoCommon, as it does not include a number of important features, including:

  • Closest point calculations
  • Intersection calculations
  • Surface tessellation (meshing)
  • SubD to Brep conversion
  • Interpolation
  • Booleans
  • Area and mass property calculations
  • Other miscellaneous geometry calculations

Our full-featured development platform is Rhino.

Hope this helps.

– Dale

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