\def\baseN{2.4493 -0.0427007 2.4493 2.0613 2.45669 2.22397 2.47878 2.35174 2.51507 2.44429 2.56533 2.50128 2.60877 2.52714 2.66132 2.54628 2.73178 2.56089 2.82933 2.57329 2.82933 2.64933 1.88934 2.64933 1.88934 2.57329 1.9869 2.56328 2.05776 2.5503 2.11147 2.53273 2.15729 2.50932 2.20911 2.45053 2.24524 2.35724 2.26642 2.22799 2.27332 2.0613 2.27332 0.713349 0.733303 2.64933 0.0493522 2.64933 0.0493522 2.57329 0.159964 2.56533 0.247746 2.5338 0.333312 2.46695 0.437354 2.3533 0.437354 0.589352 0.434234 0.45 0.423394 0.338814 0.402126 0.252591 0.367801 0.187801 0.317956 0.141241 0.249963 0.109462 0.161277 0.089261 0.0493522 0.077354 0.0493522 0.00131387 0.989343 0.00131387 0.989343 0.077354 0.884726 0.0872901 0.800639 0.107245 0.734945 0.139763 0.685757 0.187801 0.651022 0.253987 0.628686 0.341113 0.616779 0.451971 0.61333 0.589352 0.61333 2.15729 2.3813 -0.0427007 } \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=\baseN,ngrid=1,decal=1,RotZ=90,RotX=90,unit=4](0,-1,0) \end{pspicture}