isosurface { //--------------------------------------- 
  function{
   f_rounded_box( x, y, z,
                  0.3,  // radius of curvature
                  0.8,0.8,0.8) // scale<x,y,z>
     -(f_crackle(x/0.4,y/0.4,z/0.4)*0.2)
   }
  threshold 0
  contained_by {box {<-1,-1,-1>*1.5,<1,1,1>*1.5}}
  max_gradient 3.2
  accuracy 0.0001
  texture { pigment{ color rgb<1.0,0.9,0.7>}
            normal { bumps 0.5 scale 0.05}
            finish { phong 0.3}
	  }
  scale 0.90
  rotate <0,-50,0>
  rotate <-20,0,0>  
  translate < 0, 1.4, -0.5>
} // end of isosurface --------------------------------