//BowenYang.bvr\n\n//Parametric surface\ncyl=parametricSurface\ncyl.setMinMax=s,0,3.3\ncyl.setMinMax=t,0,6.6\ncyl.setEquation=x,(4*cos(t)*sin(s))\ncyl.setEquation=y,(4*sin(t)*sin(s))\ncyl.setEquation=z,(4*cos(s))\ncyl.setSegmentCount=20\ncyl.color=blue\ncyl.spawn\n\n//Parametricsurface\ncyl1=parametricSurface\ncyl1.setMinMax=s,-6,6\ncyl1.setMinMax=t,-6,6\ncyl1.setEquation=x,(3)\ncyl1.setEquation=y,(t)\ncyl1.setEquation=z,(s)\ncyl1.setSegmentCount=20\ncyl1.color=green\ncyl1.spawn\n\n//Parametriccurve\nhelix=parametricCurve\nhelix.setMinMax=s,0,3.3\nhelix.setMinMax=t,0,6.6\nhelix.setEquation=x,(3)\nhelix.setEquation=y,(sqrt(7)*sin(t))\nhelix.setEquation=z,(sqrt(7)*cos(t))\nhelix.setSegmentCount=20\nhelix.setThickness=0.1\nhelix.color=red\nhelix.spawn