\\ Problem4.bvr\n\n// Torus\ntorus=parametricSurface\ntorus.setMinMax=t,-5,5\ntorus.setMinMax=s,-5,5\ntorus.setEquation=x,((2+cos(t))*cos(s))\ntorus.setEquation=y,((2+cos(t))*sin(s))\ntorus.setEquation=z,(sin(t))\ntorus.setSegmentCount=40\ntorus.color=green\ntorus.spawn\n\n// Circle 1\ncircle1=parametricCurve\ncircle1.setMinMax=t,0,6.6\ncircle1.setEquation=x,(3*cos(t))\ncircle1.setEquation=y,(3*sin(t))\ncircle1.setEquation=z,(0)\ncircle1.setSegmentCount=40\ncircle1.setThickness=0.2\ncircle1.color=red\ncircle1.spawn\n\n// Circle 2\ncircle2=parametricCurve\ncircle2.setMinMax=t,0,6.6\ncircle2.setEquation=x,(0)\ncircle2.setEquation=y,(cos(t) + 2)\ncircle2.setEquation=z,(sin(t))\ncircle2.setSegmentCount=40\ncircle2.setThickness=0.2\ncircle2.color=blue\ncircle2.spawn\n