//Torus and circles(Yucheng).bvr\n\n//Parametric surface\ncyl=parametricSurface\ncyl.setMinMax=s,0,6.5\ncyl.setMinMax=t,0,6.5\ncyl.setEquation=x,((2+1*cos(t))*cos(s))\ncyl.setEquation=y,((2+1*cos(t))*sin(s))\ncyl.setEquation=z,(sin(t))\ncyl.setSegmentCount=30 \ncyl.spawn\n\n//Parametric curve\nhelix1=parametricCurve\nhelix1.setMinMax=t,0,8\nhelix1.setEquation=x,(0)\nhelix1.setEquation=y,(2+sin(t))\nhelix1.setEquation=z,(cos(t))\nhelix1.setSegmentCount=70\nhelix1.setThickness=0.2\nhelix1.color=blue\nhelix1.spawn\n\n//Parametric curve\nhelix2=parametricCurve\nhelix2.setMinMax=t,0,8\nhelix2.setEquation=x,(3*cos(t))\nhelix2.setEquation=y,(3*sin(t))\nhelix2.setEquation=z,(0)\nhelix2.setSegmentCount=70\nhelix2.setThickness=0.2\nhelix2.color=red\nhelix2.spawn