background {1}//eqivalent to background {color rgb 1} camera { angle 50 location <1.3,2,2.4> look_at 0 } isosurface { function { sin(pi*x) + sin(pi*y) + sin(pi*z) } contained_by {sphere {0, 2}} max_gradient 6 pigment {rgbf 1} interior {ior 1.5} scale.5 }