I discovered that I managed to define a pill shape backwards, in that I scaled it first, and positioned it last:
But I can’t figure out how I’m supposed to do the opposite in Grasshopper?
I have the lines and arcs which make the pill shape as input curves, because I want to draw the original shape in Rhino first. That’s a nice to have feature, but not a must. Perhaps this is what makes me not understand how to identify the shapes after placement, so I know which to scale (the lines) and which to move (the arcs)…
EDIT: Apparently this is a pill shape in Grasshopper…
So that “solves” this specific scenario for me (although it isn’t centered on its plane, which is weird), but I’ll leave the question open if someone wants to give a more general answer.