//Yang Taoqi.bvr\n \n// Parametric curve\nhelix=parametricCurve\nhelix.setMinMax=t,0,6.5 \nhelix.setEquation=x,(3*cos(t))\nhelix.setEquation=y,(3*sin(t))\nhelix.setEquation=z,(0)\nhelix.setSegmentCount=70\nhelix.setThickness=0.2\nhelix.color=red\nhelix.spawn \n\n\n//sphere\ns1=parametricSurface \ns1.setMinMax=t,0,7\ns1.setMinMax=s,0,3.5\ns1.setEquation=x,(3*cos(t)*sin(s))\ns1.setEquation=y,(3*sin(t)*sin(s))\ns1.setEquation=z,(3*cos(s))\ns1.setSegmentCount=70\ns1.spawn\n\n// Parametric curve2\nhelix2=parametricCurve\nhelix2.setMinMax=t,-10,10\nhelix2.setEquation=x,(2)\nhelix2.setEquation=y,(sqrt(5)*sin(t))\nhelix2.setEquation=z,(sqrt(5)*cos(t))\nhelix2.setSegmentCount=70\nhelix2.setThickness=0.2 \nhelix2.color=red\nhelix2.spawn\n