height="480"
radius="0.6"
x0="-0.6"; y0="-0.6"; z0="-0.6";
-x1="+0.6"; y1="+0.6"; z1="+0.6";
+x1="0.6"; y1="0.6"; z1="0.6";
cx=""; cy=""; cz="";
lx="0"; ly="-100"; lz="100";
ortographic=""
[ "$lc" = "c" ] && lc=3.566
offset=`echo 0.125 \* $lc | bc`
+#offset=0.0
x0=`echo $x0 \* $lc + $offset | bc`
y0=`echo $y0 \* $lc + $offset | bc`