//yansiduo hu.bvr\none=parametricSurface\none.setMinMax=s,0,6.28\none.setMinMax=t,0,6.28\none.setEquation=x,(2*cos(t)*sin(s))\none.setEquation=y,(2*sin(t)*sin(s))\none.setEquation=z,(2*cos(s))\none.setSegmentCount=40\none.color=blue\none.spawn\n\n\n//Parametricsurface\ntwo=parametricSurface\ntwo.setMinMax=s,-5,5\ntwo.setMinMax=t,-5,5\ntwo.setEquation=x,(s)\ntwo.setEquation=y,(t)\ntwo.setEquation=z,(1)\ntwo.setSegmentCount=20\ntwo.color=green\ntwo.spawn\n \n \n// Parametric curve\nthree=parametricCurve\nthree.setMinMax=t,0,6.28\nthree.setEquation=x,(1.7*sin(t))\nthree.setEquation=y,(1.7*cos(t))\nthree.setEquation=z,(1)\nthree.setSegmentCount=70\nthree.setThickness=0.1\nthree.color=red\nthree.spawn \n\n\n\n\n\n