RP = render_params(scene(space_tree([leaf(space_tree_object(basic_object(11, sphere(constant(surface_properties(22, 33, 44, 55))))))]))) Surface = constant(surface_properties(22, 33, 44, 55)) NewSurface = constant(surface_properties(55, 44, 33, 22)) RP = render_params(scene(space_tree([leaf(space_tree_object(basic_object(11, sphere(constant(surface_properties(22, 33, 44, 55))))))])))