projete_ortho_01.tex

\documentclass{article}
\usepackage{pst-solides3d}
\begin{document}
\pagestyle{empty}
 
 
 
\begin{pspicture}(-6,-5)(6,8)%
\psframe*[linecolor=blue!50](-6,-5)(6,7)
\psset{lightsrc=viewpoint,viewpoint=50 30 15,Decran=60}
\psset{solidmemory}
%% definition du plan de projection
\psSolid[object=plan,
   definition=equation,
   args={[1 0 1 0] 90},
   base=-4 4 -3 3,
   fillcolor=white,
   name=monplan,
]
\psset{plan=monplan,visibility=false}
%% legende du plan
\psProjection[object=texte,
   fontsize=20,
   text=P,
   pos=cc,
](-3.65,-2.65)
\psProjection[object=cercle,
   args=-4 -3 1,
   range=0 90,
]
\psset{fontsize=15}
%% definition droite d
\psProjection[object=droite,
   definition=horizontale,
   args=-1,
   name=d,
]
%% definition du point M
\psProjection[object=point,
   args=-2 1,
   name=M,
   text=M,
   pos=ul,
]
%% definition du point H
\psProjection[object=point,
   definition=orthoproj,
   args=M d,
   name=H,
   text=H,
   pos=dr,
]
%% definition du point H' pour orienter l'angle droit
%% et mettre la legende
\psProjection[object=point,
   definition=xdpoint,
   args=2 d,
   name=H',
   action=none,
   text=d,
   pos=ur,
]
%% definition d'une ligne 
\psProjection[object=line,
   args=M H,
]
%% dessin angle droit
\psProjection[object=rightangle,
   args=M H H',
]
\composeSolid
%\axesIIID(4,4,2)(5,5,6)
\end{pspicture}
 
\end{document}