%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  Copyright (C) 2010 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[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{190.324pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-solides3d}
\StopShownPreambleCommands
\begin{document}
\psset{unit=0.75}
\begin{pspicture}(-6.5,-3)(7,11)
\psset{lightsrc=10 -20 50,viewpoint=50 -20 20 rtp2xyz,Decran=50}
\psSolid[object=grille,base=-4 4 -4 4,
  linecolor=lightgray,linewidth=0.5\pslinewidth]%
\psSolid[object=grille,base=-4 4 0 8,
  linecolor=lightgray,RotX=90,
  linewidth=0.5\pslinewidth](0,4,0)
\psSolid[object=grille,base=-4 4 -4 4,
  linecolor=lightgray,RotY=90,
  linewidth=0.5\pslinewidth](-4,0,4)
\defFunction[algebraic]{helice}(t)%
  {1.3*(1-cos(2.5*t))*cos(6*t)}
  {1.3*(1-cos(2.5*t))*sin(6*t)}{t}
\defFunction[algebraic]{helice_xy}(t)%
  {1.3*(1-cos(2.5*t))*cos(6*t)}
  {1.3*(1-cos(2.5*t))*sin(6*t)}{0}
\defFunction[algebraic]{helice_xz}%
  (t){1.3*(1-cos(2.5*t))*cos(6*t)}{4}{t}
\defFunction[algebraic]{helice_yz}%
  (t){-4}{1.3*(1-cos(2.5*t))*sin(6*t)}{t}
\psset{range=0 8}
\psSolid[object=courbe,r=0,linecolor=blue,
  linewidth=0.05,resolution=360,
  normal=0 0 1,function=helice_xy]
\psSolid[object=courbe,r=0,
  linecolor=green,linewidth=0.05,
  resolution=360,normal=0 0 1,
  function=helice_xz]
\psSolid[object=courbe,r=0,
  linewidth=0.05,resolution=360,
  normal=0 0 1,function=helice_yz]
\psSolid[object=courbe,r=0,
  linecolor=red,linewidth=0.1,
  resolution=360,function=helice]
 \end{pspicture}
\end{document}
