// mobius.bvr \n\n// Parametric surface \ncyl=parametricSurface \ncyl.setMinMax=s,-1,1 \ncyl.setMinMax=t,0,6.6 \ncyl.setEquation=x,((3+s*cos(t/2))*cos(t)) \ncyl.setEquation=y,((3+s*cos(t/2))*sin(t)) \ncyl.setEquation=z,(s*sin(t/2)) \ncyl.setSegmentCount=20 \ncyl.color=blue \ncyl.spawn\n\n// Parametric curve \nhelix=parametricCurve \nhelix.setMinMax=t,-6.6,6.6 \nhelix.setEquation=x,(3*cos(t)+0.2*sin(t/2)*cos(t)) \nhelix.setEquation=y,(3*sin(t)+0.2*sin(t/2)*sin(t)) \nhelix.setEquation=z,(-0.2*cos(t/2))\nhelix.setSegmentCount=70 \nhelix.color=red \nhelix.spawn \n\n