isosurface { //-------------------------------------------------------------

  function{ abs(x)+abs(y)+abs(z)-2.7  }

  contained_by { box { -2, 2 } }
  accuracy 0.003
  max_gradient 5

  texture{ pigment{ color rgb<1,0.25,0.35>}
           normal { bumps 0.5 scale 0.035}
           finish { specular 0.2 phong 1 reflection 0.15}}
  scale 0.5
  rotate<0,10,0>
  translate <0, 1.3, 0>
} // end of isosurface -----------------------------------------------------