Imports github.com/disintegration/gift github.com/nfnt/resize github.com/pointlander/gradient/tc128 gonum.org/v1/plot gonum.org/v1/plot/plotter gonum.org/v1/plot/vg gonum.org/v1/plot/vg/draw Standard library imports flag fmt image image/color image/jpeg image/png math math/cmplx math/rand os sort strings time