because im an ornery kind of guy i dug around and found the laplacian routines written for unity. Most of the commands are easy to port over (Vector3D to vector3d etc) and I had to write my own mathf.approximate for determining neighbour epsilon equality, Where i am stuck now the function is expecting the vertex list in vector3d not point3d.

The unity dll does this automatically in format vector3D[] vectors = mesh.vector3d().

I can extract from rhino mesh.vertex a point3d and point3f list but no vector3d list.

I cant seem to extract an edge list to vectors either?

may be simpler to convert the routine to do the math on point3dsâ€¦ but im lazyâ€¦