In case anyone needs this, it fits a retractable bellow fold shelter over a house shaped brep (should work on other geometries by removing the ridge line).
Note: The roof tiles are not always planar as the angle of the ridge line would change in real life when unfolded. I don’t know if there would be a way to always keep everything planar so it can be built with rigid material.
bellow fold.3dm (88.1 KB)
bellow fold.gh (80.1 KB)