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%%
%% The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%% Example 6-5-19 on page 396.
%%
%% Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss
%%
%% 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.
%%
\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{348.0pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-3d}
\StopShownPreambleCommands
\begin{document}
\newcommand\CubeSide[4]{%
\ThreeDput[normal=#1](#2){
\psframe*[linecolor=#3](4,4)
\rput(2,2){\footnotesize#4}}
}
\newcommand\TheCube[2]{%
\begin{pspicture}(-7,-5)(8,7)
\bfseries
\ifcase #1 \relax
\or %1
\psset{viewpoint=-1 -1 #2}
\rput[l](-7,-5){{\normalsize \texttt{viewpoint=-1 -1 #2}}}
\ifnum#2>0\ThreeDput[normal=0 0 1]{\psgrid(-3,-3)(6,6)}\fi
\CubeSide{-1 0 0}{0,4,0}{yellow}{FRONT}
\CubeSide{0 -1 0}{0,0,0}{blue}{FRONT}
\or %2
\psset{viewpoint=1 -1 #2}
\rput[l](-7,-5){{\normalsize \texttt{viewpoint=1 -1 #2}}}
\ifnum#2>0\ThreeDput[normal=0 0 1]{\psgrid(-3,-3)(6,6)}\fi
\CubeSide{0 -1 0}{0,0,0}{blue}{FRONT}
\CubeSide{1 0 0}{4,0,0}{white}{BACK}
\or %3
\psset{viewpoint=1 1 #2}
\rput[l](-7,-5.5){{\normalsize \texttt{viewpoint=1 1 #2}}}
\ifnum#2>0\ThreeDput[normal=0 0 1]{\psgrid(-3,-3)(6,6)}\fi
\CubeSide{1 0 0}{4,0,0}{white}{BACK}
\CubeSide{0 1 0}{4,4,0}{green}{BACK}
\or %4
\psset{viewpoint=-1 1 #2}
\rput[l](-7,-5.5){{\normalsize \texttt{viewpoint=-1 1 #2}}}
\ifnum#2>0\ThreeDput[normal=0 0 1]{\psgrid(-3,-3)(6,6)}\fi
\CubeSide{0 1 0}{4,4,0}{green}{BACK}
\CubeSide{-1 0 0}{0,4,0}{yellow}{FRONT}
\fi
\ifnum#2<0\CubeSide{0 0 -1}{0,4,0}{magenta}{BOT}
\else\CubeSide{0 0 1}{0,0,4}{red}{TOP}\fi
\end{pspicture}
}
\psset{unit=.35cm,subgriddiv=0}
\begin{tabular}{cc}
\TheCube{1}{1} & \TheCube{2}{1}\\[-10pt]
\TheCube{3}{1} & \TheCube{4}{1}\\
\end{tabular}
\end{document}
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