K3DSurf (now MathMod) is a program to visualize and manipulate Mathematical models in three, four, five and six dimensions. K3DSurf supports Parametric equations and Isosurfaces.
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Welcome to the realm of complex numbers!
Change-log for MathMod-11.1 (16/06/2021)
1) Support of graphing functions with complex numbers Z=u+iv in 3D and 4D spaces (demo scripts: "Complex3D_xx" and "Complex4D_Saddle")
2) Added support for HSV (hue, saturation, brightness) coloring model (script