zeGraph - Create 3D art and visualize scientific and business data

bifolia_surface -- Finds the iso-surface of the equation:
cassini_oval -- Creates 2D super curves.
check_normal -- Check whether vertex normals point outward
corkscrew_surface -- Generate corkscrew surface based on parametric equations of
cross_cap -- Generate cross cap surface based on Pinkall (1986) parametric equations
cross_cap2 -- Generate cross cap surface based on Gray (1997) parametric equations
gumdrop_torus -- Finds the iso-surface of the equation:
hyperbolic_paraboloid -- Generate hyperbolic paraboloid (z = x^2/a^2 - y^2/b^2) surface.
hyperboloid -- Generate hyperboloid surface based on parametric equations of
klein8_bottle -- Generate Figure-8 Klein bottle surface parametric equations of
klein_bottle -- Generate Klein bottle surface parametric equations of
knots -- Creates 2D super curves.
load_shapes -- Process shape data in DATA
moebius_strip -- Creates a moebius_strip.
super_ellipse -- Creates 2D super ellipse line.
super_ellipsoid -- Creates 2D super ellipse line.
super_surfaces -- Generate super surfaces based on parametric equations of
surface_generator -- For generating 3D surface quads.