Thanks a lot for your answer! I'll definetily try it on Rhino 6. In the meantime I'm kind of stuck in an interpretation of your tutorial for the centre Pompidou on a project of my own. I'm stuck at the moment where I'm generating the beams (like you can see in the picture the beems twist a lot), because I would like the beems to be always vertical and strait with the same height and not perpendicular to the brep. Do you have an idea on how to make this happen ?

Thanks again !

Hi Luc!

Autodesk acquired T-splines some time ago and then decided to terminate it in favor of their Fusion 360. This means that T-splines is dead and is not available for Rhino anymore unfortunately... A dick move, I know, but luckaly Rhino is working on their own T-spline or Subd implementation (https://discourse.mcneel.com/t/subd-tool-on-rhino-6/66385/2) it is still in a very very beta stage. As soon as this matures into a more stable option, I'm going to redo these lessons using Rhino's native Subd option. As well as the course about the Heydar Aliyev Center from ZHA.

If you can't wait and want to play around with Subd's in Rhino do the following:

• Create a mesh
• Select the mesh and type in the command prompt: SubdFromMesh
• This command is hidden, so there is no autocomplete
• this will convert your mesh into a Subd (or T-spine) geometry

You need Rhino 6 for this command to work and be advised it is kind of unstable and it might crash Rhino etc.

Unfortunately a Subd geometry can't be referenced in Grasshopper (yet). I guess as soon as this is possible I'll redo the lessons.

Good luck and thanks for your understanding!

Arie