shrinkwrap_sharp.gh (24.2 KB)
Here’s a go at this with the current Kangaroo, also using MeshEdit to make the convex hull to start with and Weaverbird.
It’s still not perfect - edges that are part of the input geometry and the convex hull stay crisp, but it can still end up rounding other edges inside as it shrinks.
I’d like to improve this, but I think it will need some slightly different way of finding the collisions, and/or remeshing while shrinking.