Vesicle script by Brian McMillin, October, 2014.
The vesicle script generates various 2d curves, which are unduloid-like.
They are GENERALIZED Delaunay unduloids, not actual Delaunay unduloids.
Revolve about the z axis is intended, which gives them the appearance of vesicles or chalices.

A general link is: http://www.imbm.bas.bg/uploads/pdfs/papers/VMV/DHMV_09.pdf

Front view is used. Rebuild and mirror are suggested.
Reset of the view may be needed, due to change in size.
There is more mathematical information in the .htm file. Elliptic integrals and Jacobi functions are used.

- Brian