//Ruixuan Ding Sphere and circles.bvr\n\n//Sphere\nt=parametricSurface\nt.setMinMax=s,-3,3\nt.setMinMax=t,0,3.33334\nt.setEquation=x,(3*(cos(s))*sin(t))\nt.setEquation=y,(3*(sin(s))*sin(t))\nt.setEquation=z,(3*cos(t))\nt.setSegmentCount=20\nt.color=blue\nt.spawn\n\n\n//Circle\na=parametricCurve\na.setMinMax=t,0,6.66667\na.setEquation=x,(2*sin(t))\na.setEquation=y,(2*cos(t))\na.setEquation=z,(sqrt(5))\na.setSegmentCount=100\na.color=yellow\na.setThickness=0.2\na.spawn\n\n//Great Circle2\nc=parametricCurve\nc.setMinMax=t,0,6.666667\nc.setEquation=x,(3*sin(t))\nc.setEquation=y,(3*cos(t))\nc.setEquation=z,(0)\nc.setSegmentCount=100\nc.color=green\nc.setThickness=0.2\nc.spawn\n\n\n\n\n\n\n//Text\ntxt=text\ntxt.text=The Earth\ntxt.color=white\ntxt.position=0,0,4\n\n\n\n\n\n//Text\ntxt1=text\ntxt1.text=The Equator\ntxt1.color=white\ntxt1.position=-5,0,0\n\n\n\n\n\n\n\n\n\n