mesh-reindex 
Convert a flat array into a simplicial-complex-style indexed mesh, without optimisation.
Useful for interoperability with other modules, and can also be used in combination with unindex-mesh to force hard edges.
Usage
mesh = reindex(array)
Given a flat array of vertices, expand into an indexed mesh with the following properties:
positions: the vertices in the mesh.cells: the faces in the mesh, with each element being an array of three indices for each point in a triangle.
See Also
License
MIT. See LICENSE.md for details.