isosurface { //------------------------------------------------------------- function { f_paraboloid(x,-y,z, -1) } contained_by { box { -2, 2 } } accuracy 0.002 max_gradient 4 texture{ pigment{ color rgb<0.5,1,0.1>} finish { phong 1}} scale 1 rotate<0,30,0> translate <0,2.2,0> } // end of isosurface -------------------------------------------------------