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%%
%% A DANTE-Edition example
%%
%% Example 36-00-106 on page 814.
%%
%% 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}
\psset{lightsrc=viewpoint,viewpoint=50 60 25 rtp2xyz,Decran=50}
\begin{pspicture}(-5,-3)(6,6)
\psSolid[object=grille,base=-4 4 -4 4](0,0,0)
\defFunction[algebraic]{paraboloid}(u,v)
{4*sqrt(u/4)*cos(v)}
{4*sqrt(u/4)*sin(v)}
{-u+4}
\psSolid[object=surfaceparametree,base=0 4 0 pi neg,
ngrid=20 20,incolor=red!40,fillcolor=yellow!50,
intersectionplan={[0 1 0 0]},
intersectioncolor=(bleu),
intersectionlinewidth=2,
intersectiontype=1,
function=paraboloid]
\gridIIID[Zmin=0,Zmax=4,spotX=r](-4,4)(-4,4)
\end{pspicture}
\end{document}
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