//haocheng wang.bvr\n\n//Parametric surface\nt=parametricSurface\nt.setMinMax=s,0,3.3\nt.setMinMax=t,0,6.6\nt.setEquation=x,((3*cos(t))*sin(s))\nt.setEquation=y,((3*sin(s))*sin(t))\nt.setEquation=z,(3*cos(s))\nt.setSegmentCount=30\nt.color=green \nt.spawn\n\n//Parametric curve 1\nc1=parametricCurve\nc1.setMinMax=t,-3.3,3.3\nc1.setEquation=x,(3*cos(t))\nc1.setEquation=y,(0)\nc1.setEquation=z,(3*sin(t))\nc1.setSegmentCount=30\nc1.setThickness=0.2\nc1.color=blue\nc1.spawn\n\n//Parametric curve 2\nc2=parametricCurve\nc2.setMinMax=t,-3.3,3.3\nc2.setEquation=x,(2.5*cos(t))\nc2.setEquation=y,(2.5*sin(t))\nc2.setEquation=z,(1.7)\nc2.setSegmentCount=30\nc2.setThickness=0.2\nc2.color=red\nc2.spawn\n