//default camera {location 0 look_at z}
background {1}	//equivalent to background {color rgb 1}
isosurface {
	function {
		cos(x) + cos(y) + cos(z) + sin(x)*sin(y)*sin(z) + 1
		}
	contained_by {sphere {0, 6}}
	max_gradient 3
	pigment {rgbf 1}
	interior {ior 1.5}
	scale .16
	translate 3*z	//to see it from origin
	}