generative modeling for Rhino
I would like to share my findings on organic roof surfaces like some of the neo-Gothic churches and Shigeru Ban types of building.
The Base Roof surfaces of these complex all seem to be constructed with 1 NURBS surface, not from patches or polysurfaces.1 single surface allows perfect curvature to be achieved, grasshopper usage which is really efficient.
As for the Pompidou Metz roof, it starts with a mesh model with nice topology and then the mesh is handed to a company (iCapp) which "magically" rebuild the single NURBS surface from the point clouds or mesh file. Some info could be found here:
http://www.icapp.ch/2.Ebene/3menue/eservices_details.html - scroll down to the part of "architecture"
Another article here that talks about the importance of single nurbs surface:
My Question is..how do they ever do it - 1 single NURBS surface?
Related GH discussion:
(but i cannot find thorough discussion about surface creation)
From Mesh --> points --> NURBS surface :
Section 7 talks about the technology that the company use..but it starts getting into Reverse Engineering Field.
What is the a way to construct these roof surfaces in rhino without going into reverse engineering field?
I've tried something like Resurf but it doesn't really seem to work well with these roof surfaces..
A Chinese rhino user did the model without grasshopper...but still I have no clue how he drew the lines...
More images: http://blog.shaper3d.cn/dixon/page/2/
This discussion could be helpful: