For the parametric seating project, I used Marc Newson’s wooden chair for Cappellini as my parent:
I started by using the surface model I had made in Rhino and referencing it into Grasshopper (I later built two alternate surface models and also referenced them into Grasshopper).
From there I made 4 blocks of code. 1 for the ribs, 1 for the base, and 2 for the horizontal supports:
Below are images of my final Grasshopper model:
While building my Grasshopper model, I kept the following 4 design drivers in mind and make sure those elements remained parametric:
(this second GIF doesn’t work in preview, but click on the image above and it will open in a separate window and run correctly!)
Using the above design drivers, I created 5 variations to the original parent:
Parametrics 