// Mobius_strip.bvr\n\n// Mobius strip\nmob=parametricSurface\nmob.setMinMax=s,-1,1\nmob.setMinMax=t,0,6.6\nmob.setEquation=x,((3+s*cos(t/2))*cos(t))\nmob.setEquation=y,((3+s*cos(t/2))*sin(t))\nmob.setEquation=z,(s*sin(t/2))\nmob.setSegmentCount=30 \nmob.spawn\n\n// Curve around mobius strip\nheli=parametricCurve\nheli.setMinMax=t,-12,12\nheli.setEquation=x,(3*cos(t)-(cos(t)*sin(t/2))/5)\nheli.setEquation=y,(3*sin(t)-(sin(t)*sin(t/2))/5)\nheli.setEquation=z,(cos(t/2)/5)\nheli.setSegmentCount=70\nheli.setThickness=0.15\nheli.color=blue\nheli.spawn