Ah yes, the ShellStar pavilion - a very nice project by @akudless with Matsys. I https://www.matsys.design/shellstar-pavilion
I think this was maybe the first full scale built outdoor structure ever designed using Kangaroo.
Here the cells do not need to be exactly planar, but are made from plastic sheets with a hole in the middle that can twist a bit, so this is less restrictive geometrically.
As it says in the description, for each cell they triangulated it to a central point, positioned so the angles around the centre summed to 360 degrees. This means that although each cell is not flat, it can unroll to flat without having to stretch.
Perhaps there is a geometric way of finding this point directly without optimisation, but here is a way of getting it with Kangaroo, using a new Goal I created recently for making a set of angles sum to 2Pi:
HexCells_3.gh (133.2 KB)
