This script creates Scherk's First Minimal Surface. The surface looks like a saddle, and may even be useful.
The u and v angle parameters have intervals of (-PI/2, PI/2), inclusive.
Larger intervals do not work. This is probably due to division by zero?

A small absolute value for cValue makes the "saddle" flatter. When cValue is .00001, the grid is almost flat.
A negative cValue faces the horse in the direction of the x axis.
The maximum absolute value for cValue is coded to 1.0. cValue of zero is coded to 1.0.
Network works for cValue = .99.
A faster .htm version could be done.

- Brian