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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">I want to make a circular hole in the lid of an open box.</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">I tried to use definition=ABcercle but I cannot find the exact syntax (see red lines in example below). I'm not sure that the coordinates of the three points are correct but that's a problem to be fixed later on.</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">How can I make it work?</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">Poul Riis</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">\documentclass[12pt,a4paper]{article}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">\usepackage[dvips,left=2cm,top=1.5cm,right=1.5cm,bottom=2.4cm]{geometry}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">\usepackage[dvips,x11names]{xcolor}</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">\usepackage{pst-solides3d}</font></div>
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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">\begin{document}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \psset{unit=5mm}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \pstVerb{/aa 6 def /bb 10 def /cc 4 def /philaag 20 def /cosphi philaag cos def /sinphi philaag sin def /Mlaagx cosphi 1 sub aa mul 2 div def /Mlaagz sinphi aa mul 2 div cc add def /nlaagx sinphi neg def /nlaagz cosphi def /radius 1 def /Ax Mlaagx def /Ay radius def /Az Mlaagz def /Bx Mlaagx radius cosphi mul add def /By 0 def /Bz Mlaagz radius sinphi mul add def /Cx Mlaagx def /Cy radius neg def /Cz Mlaagz def}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \begin{pspicture}(-10,-15)(10,15)</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \psset{viewpoint=100 30 20,Decran=200}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \psSolid[</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> object=parallelepiped,%</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> a=aa,b=bb,c=cc,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> hollow, </font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> fillcolor=Green3,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> affinage=0,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> affinagecoeff=1,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> incolor=yellow]%</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> (0,0,cc 2 div)</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \psSolid[object=plan,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> definition=normalpoint,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> args={ Mlaagx 0 Mlaagz [sinphi 0 cosphi neg]},</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> fillcolor=Gold3,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> base=aa neg 2 div aa 2 div bb neg 2 div bb 2 div,showbase]</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> </font><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">\psProjection[object=cercle,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;"> definition=ABcercle,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;"> args=Ax Ay Az Bx By Bz Cx Cy Cz,</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;"> range=0 360]</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;"> \end{pspicture}</font></div>
<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">\end{document}</font></div>
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