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%%
%% A DANTE-Edition example
%%
%% Example 23-06-88 on page 436.
%%
%% 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{viewpoint=20 60 20 rtp2xyz,
lightsrc=10 15 7,Decran=20}
\pstVerb{
/distort {
4 dict begin % keep local
/M defpoint3d % save as vector
/a .5 def /b 1 a 3 sqrt mul sub def
/k M norme3d a mul b add def
M k mulv3d
end } def }%
\begin{pspicture}(-3,-4)(3,3)
\psset{linewidth=.02,linecolor=gray}
\psSolid[object=cube,a=3,ngrid=9,
transform=distort]%
\end{pspicture}
\end{document}
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