function: z → sn(z,m)
Preimage: rectangular grid.
Domain: -1.62 ≤ Re(z) ≤ 1.62 and -2.58 ≤ Im(z) ≤ 2.58
Stereographic Projection onto a sphere.
Pascal Code for JacobiSn Map: ConformalMappingFunction := ComplexSum(ComplexProduct(aaa, JacobiSN(z, mm)), ComplexProduct(bbb, z));