eye 3 3 5 lookat 2.5 0 0 up 1 0 0 fov 35 background 0 0 .4 material 1 1 1 0 1.0 0 0 0 0 0 sphere light 0.6 0.0 0.0 point 3 3 3 light 0.0 0.6 0.0 point 0 -3 3 light 0.0 0.0 0.6 point -3 3 3