//Yining Sun.bvr\n\n//Parametricsurface\ns=parametricSurface\ns.setMinMax=s,0,3.3\ns.setMinMax=t,0,6.6\ns.setEquation=x,(4*cos(t)*sin(s))\ns.setEquation=y,(4*sin(t)*sin(s))\ns.setEquation=z,(4*cos(s))\ns.setSegmentCount=30\ns.color=blue\ns.spawn\n\n//Parametricsurface\np=parametricSurface\np.setMinMax=s,-6.6,6.6\np.setMinMax=t,-6.6,6.6\np.setEquation=x,(3)\np.setEquation=y,(s)\np.setEquation=z,(t)\np.setSegmentCount=20\np.color=green\np.spawn\n\n//Parametriccurve\nl=parametricCurve\nl.setMinMax=t,0,6.6\nl.setEquation=x,(3)\nl.setEquation=y,(sqrt(7)*cos(t))\nl.setEquation=z,(sqrt(7)*sin(t))\nl.setSegmentCount=50\nl.color=red\nl.setThickness=0.3\nl.spawn\n