GH Offsetting Brep Surfaces

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One thing you should look at is ShrinkWrap in the Rhino 8 WIP, which will work on Point Clouds. A QuadRemesh after can result in some decent geometry that you can work with. There is a Grasshopper component as well. Rhino 8 also has better mesh offsets (shrink wrap can offset as well)

Rhino 8 Feature: ShrinkWrap

ShrinkWrap lets you create a wrapped mesh from mesh, NURBS geometry, SubD, and Point Clouds. Just about anything! ShrinkWrap meshes are ideal for creating: Meshes for 3D printing. A solid union mesh from multiple input objects. A solid mesh from 3D scan data fragments. Meshes without internal self intersections. Offset meshes for shell operations Reverse engineering workflows Point cloud meshes Valid closed meshes from broken or often hard to repair geometry. [0648] [ShrinkWrap] …