\def\baseF{1.91734 0.925292 1.91734 1.85329 1.82529 1.85329 1.80567 1.74506 1.78128 1.65884 1.74933 1.59241 1.70729 1.5433 1.65244 1.50914 1.58231 1.48763 1.49411 1.47646 1.38531 1.47334 0.805319 1.47334 0.805319 2.36135 0.810082 2.42975 0.828805 2.4713 0.867728 2.49175 0.933339 2.49734 1.47728 2.49734 1.63035 2.49405 1.75336 2.48231 1.85034 2.45932 1.92523 2.42228 1.98214 2.36833 2.02508 2.29475 2.05809 2.19868 2.08527 2.07731 2.18529 2.07731 2.1733 2.64933 0.0493522 2.64933 0.0493522 2.57329 0.149206 2.56237 0.228531 2.54628 0.289462 2.52263 0.334297 2.48929 0.365173 2.44388 0.384471 2.38426 0.394407 2.30814 0.397281 2.21329 0.397281 0.481286 0.394735 0.369361 0.38562 0.280839 0.367308 0.212765 0.337254 0.162263 0.292993 0.126378 0.231898 0.102153 0.151505 0.0867974 0.0493522 0.077354 0.0493522 0.00131387 1.16934 0.00131387 1.16934 0.077354 1.06522 0.0855657 0.982445 0.0997719 0.918723 0.122272 0.871752 0.155283 0.839234 0.201022 0.818869 0.261788 0.808276 0.339799 0.805319 0.437354 0.805319 1.30935 1.38531 1.30935 1.49526 1.30607 1.58395 1.2949 1.65424 1.27322 1.70877 1.23881 1.7504 1.18913 1.78185 1.12196 1.80583 1.03475 1.82529 0.925292} \psset{lightsrc=40 20 25,viewpoint=50 10 20 rtp2xyz,Decran=30} \begin{pspicture}(-6,-2)(6,6) \psframe(-6,-2)(6,6) \psSolid[object=grille,base=0 4 -10 10,hue=0 1,grid]% \psSolid[object=prisme,h=1,hue=0 1,incolor=yellow, base=\baseF,ngrid=1,decal=1,RotZ=90,RotX=90,unit=4](0,-1,0) \end{pspicture}