//Torus and circles.bvr\n\n//Parametric surface\nt=parametricSurface\nt.setMinMax=s,0,6.5\nt.setMinMax=t,0,6.5\nt.setEquation=x,((2+1*cos(s))*cos(t))\nt.setEquation=y,((2+1*cos(s))*sin(t))\nt.setEquation=z,(sin(s))\nt.setSegmentCount=30\nt.color=blue\nt.spawn\n\n//parametric circle1\nc = parametricCurve\nc.setMinMax=t,0,6.5\nc.setEquation=x,(3*cos(t))\nc.setEquation=y,(3*sin(t))\nc.setEquation=z,0\nc.setSegmentCount=30\nc.setThickness=.2\nc.color=green\nc.spawn\n\n//parametric circle2\nv = parametricCurve\nv.setMinMax=t,0,6.5\nv.setEquation=x,0\nv.setEquation=y,(2+sin(t))\nv.setEquation=z,(0+cos(t))\nv.setSegmentCount=30\nv.setThickness=.2\nv.color=red\nv.spawn//