pointlight light1 void -200 -200 200 1 1 1 lambertian green void 0 1 0 metal mirror void .9 1 1 1 plane p1 mirror 0 0 -500 0 0 1 plane p2 mirror 0 0 800 0 0 -1 plane p3 mirror 500 0 0 -1 0 0 plane p4 mirror -500 0 0 1 0 0 plane p5 mirror 0 500 0 0 -1 0 plane p6 mirror 0 -500 0 0 1 0 nurbs firstNURBS green 3 3 3 3 3 1 2 3 4 5 6 1 2 3 4 5 6 500 500 30 500 600 20 500 700 60 600 500 50 600 600 40 600 700 70 700 500 60 700 600 80 700 700 30 1 1 1 1 1 1 1 1 1