%%
%% A DANTE-Edition example
%%
%% Example 36-00-103 on page 812.
%%
%% Copyright (C) 2011 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See
http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}
\usepackage{pst-solides3d}
\begin{document}
\begin{pspicture}(-4,-5)(6,8)
\psset{lightsrc=viewpoint,viewpoint=50 60 40 rtp2xyz,Decran=60}
\psSurface[ngrid=.2 .2,incolor=yellow,linewidth=0.5\pslinewidth,
r = 2,fillcolor=cyan,
axesboxed,
Zmin=0,Zmax=4](-1,-2)(1,2){
4 x dup mul mul y dup mul add dup 4 gt {pop 4} if }
\end{pspicture}
\end{document}
