%% 
%%  A DANTE-Edition example
%% 
%%  Example 23-01-25 on page 345.
%% 
%%  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{pstricks,pst-3d}
\def\tBlack#1#2{\psframe[style=#2](2,2)%
    \rput(1,1){\textcolor{#1}{\textbf{PSTricks}}}}
\newpsstyle{SolidYellow}{fillstyle=solid,fillcolor=yellow}% text
\newpsstyle{TransparencyRed}{fillstyle=vlines,hatchcolor=red,
    hatchwidth=0.1\pslinewidth,hatchsep=1\pslinewidth}% Text
\newpsstyle{TransparencyBlue}{fillstyle=vlines,hatchcolor=gray!25,
    hatchwidth=0.1\pslinewidth,hatchsep=1\pslinewidth}

\begin{document}
\begin{pspicture}(-1.2,-2)(4.8,3.7)
\ThreeDput{\psgrid[subgriddiv=0](-2,0)(4,3)} % embedangle=0
\ThreeDput(-1,0,0){\tBlack{black}{SolidYellow}}
\ThreeDput(2,0,0){\tBlack{black}{SolidYellow}}
\ThreeDput[embedangle=50](-1,0,0){\tBlack{gray}{TransparencyRed}}
\ThreeDput[embedangle=50](2,0,0){\tBlack{gray}{TransparencyBlue}}
% the normal vectors
\ThreeDput[normal=0 1 0](-1,0,0){\psline[linewidth=0.1,linecolor=red](0,4)}
\ThreeDput[normal=0 1 0](2,0,0){\psline[linewidth=0.1,linecolor=blue](0,4)}
\end{pspicture}
%
\psset{viewpoint=1 1 100}
\begin{pspicture}(-2.5,-4.75)(2.8,1.6)
\ThreeDput{\psgrid[subgriddiv=0](-2,0)(4,3)} % embedangle=0
\ThreeDput(-1,0,0){\tBlack{black}{SolidYellow}}
\ThreeDput(2,0,0){\tBlack{black}{SolidYellow}}
\ThreeDput[embedangle=50](-1,0,0){\tBlack{gray}{TransparencyRed}}
\ThreeDput[embedangle=50](2,0,0){\tBlack{gray}{TransparencyBlue}}
% the normal vectors
\ThreeDput[normal=0 1 0](-1,0,0){\psline[linewidth=0.1,linecolor=red](0,4)}
\ThreeDput[normal=0 1 0](2,0,0){\psline[linewidth=0.1,linecolor=blue](0,4)}
\end{pspicture}
\end{document}