## Kuen Surface

> - Surface with a set of planar and spherical curvature lines.
> - All planes have a line `g` in common, and midpoints of all spheres lie on `g`.
> - Each spherical curvature line has constant curvature `kg`.

> #### Type equations of parametrized surfaces

> Display the project panel by pressing Ctrl-p or by clicking the right mouse button inside the applet window and choosing the Control Panel.
> The surface equation is evaluated for a rectangular domain. In the surface panel's text fields you can type a new equation of a parameterized surface.
> A list of mathematical functions, which can be used in this text fields, is shown in Expressions.html.

> range and discretization of arguments `u` and `v` may be modified in the domain panel.
> The Eval panel shows the numerical evaluation of the function for one pair of arguments specified by the sliders in the top of the panel.

> Domain panel controls are described in Domain.html.

> View source code:
> PaParmSurface.java of applet,
> PjParmSurface.java of project,
> PjParmSurface_IP.java of project panel.