Question for general discussion, not for any particular reason.
Is the blue surface a solid in Rhino? It is a closed polysurface with no naked edges. The blue object was created by moving the solid points of the green solid.
IsItASurfaceDC01.3dm (97.2 KB)
ID: 4ad66314-d860-40c4-aa1b-653c2025f158 (7212)
Object name: (not named)
Layer name: Polysurface
source = from layer
index = -1
closed solid polysurface with 6 surfaces.
12 manifold edges
Edge Tolerances: all 0.00
Vertex Tolerances: all 0.00
Render mesh: 6 fast meshes 68 vertices 68 polygons
Analysis mesh: none present
UserData ID: 2544A64E-220D-4d65-B8D4-611BB57B46C7
description: RhinoCommon UserDictionary
saved in file: no
copy count: 1