1 \section{Enlever des facettes}
3 L'argument \Cadre{[rm=1 2 8]} permet de supprimer les facettes
4 visibles $1$, $2$ et $8$, afin de voir l'intérieur des solides creux.
7 \setlength{\columnseprule}{1pt}
9 \psset{Decran=15,grid=true,viewpoint=10 10 10}
11 \begin{pspicture}(-4.5,-4.5)(4.5,4.5)
12 \psframe(-4.5,-4.5)(4.5,4.5)
13 \psSolid[rm=1 3 6,object=cylindrecreux,ngrid=2 6,
14 h=6,r=2,fillcolor=green!50,incolor=yellow!50,RotZ=-60](0,0,-3)
21 h=6,r=2,fillcolor=green!50,
22 incolor=yellow!50,RotZ=-60](0,0,-3)
27 \setlength{\columnseprule}{1pt}
29 \psset{Decran=15,grid=true,viewpoint=10 10 10}
31 \begin{pspicture}(-4.5,-4.5)(4.5,4)
32 \psframe(-4.5,-4.5)(4.5,4)
33 \psSolid[object=troncconecreux,
36 fillcolor=green!50,incolor=yellow,
41 \psSolid[object=troncconecreux,
44 fillcolor=green!50,incolor=yellow,