anim.tex

\documentclass{article}
\usepackage{multido}
\usepackage[nomessages]{fp}
 
\usepackage{pstricks-add}
\usepackage{pst-solides3d}
 
\pagestyle{empty}
\begin{document}
\psset{unit=0.8}
\def\myFigure{%
\psset{lightsrc=10 -20 50,SphericalCoor,viewpoint=50 -20 20,Decran=50}
\pstVerb{/tmin 0 def /tmax \ai\space def}%
\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)
 
\deffunctionR[algebraic]{helice}(t){0.6*t*cos(5*t)}{0.6*t*sin(5*t)}{t}
\deffunctionR[algebraic]{helice_xy}(t){0.6*t*cos(5*t)}{0.6*t*sin(5*t)}{0}
\deffunctionR[algebraic]{helice_xz}(t){0.6*t*cos(5*t)}{4}{t}
\deffunctionR[algebraic]{helice_yz}(t){-4}{0.6*t*sin(5*t)}{t}
%vardef f(expr t) = t*cos(4*t) enddef;
%vardef g(expr t) = t*sin(4*t) enddef;
%vardef h(expr t) = t enddef;
\psSolid[object=courbe,
        linecolor=red,linewidth=0.1,
        resolution=360,
        normale=0 0 1,
        function=helice_xy]%
\psSolid[object=courbe,
        linecolor=green,linewidth=0.1,
        resolution=360,
        normale=0 0 1,
        function=helice_xz]%
\psSolid[object=courbe,
        linewidth=0.1,
        resolution=360,
        normale=0 0 1,
        function=helice_yz]%
\psSolid[object=courbe,
        linecolor=blue,linewidth=0.1,
        resolution=360,
        function=helice]%
}
 
 
\FPdiv{\myDeltaA}{6}{60}%
\def\ai{0}%
\FPdiv{\myDeltaB}{60}{60}%
\def\bi{3}%
 
\multido{\i=1+1}{60}{%
 \begin{pspicture}(-7,0)(5,9)
  \myFigure%
 \end{pspicture}
 \newpage
 \FPadd{\ai}{\ai}{\myDeltaA}
 \FPsub{\bi}{\bi}{\myDeltaB}
}
 
 
\end{document}