light_source
{
  <0, 4000, -6000>
  color rgb 1
}

sky_sphere
{
  pigment { color rgb 1 }
}

mesh2
{
  vertex_vectors
  {
    720,
    #declare a=0;
    #while (a<360)
      <sin(radians(a)), cos(radians(a)), 0>-0.1*<sin(radians(a)), cos(radians(a))*cos(radians(90+a/2)), sin(radians(90+a/2))>,
      <sin(radians(a)), cos(radians(a)), 0>+0.1*<sin(radians(a)), cos(radians(a))*cos(radians(90+a/2)), sin(radians(90+a/2))>,
      #declare a=a+1;
    #end
  }
  face_indices
  {
    720,
    #declare a=0;
    #while (a<718)
        <a, a+1, a+2>,
      #declare a=a+1;
    #end
      <718, 719, 0>, <719, 0, 1>
  }
  texture
  {
    pigment { color rgb <0, 0, 1> }
    finish { ambient 0.1 diffuse 1 brilliance 0.2 }
  }
  rotate z*(clock/2)
  rotate y*(clock/2)
}

camera
{
  location <-3.5, 1.5, -2>
  look_at 0
  angle 50
}