//  The orb - globe with gridlines
//  Last edited on 2020-11-08 18:02:20 by jstolfi

//  Requires
//    orb_land_texture
//    orb_sea_texture
//    orb_grid_texture
//    orb_dot_texture
//    orb_focus_lon
//    orb_focus_lat
//  Defines
//    orb

#declare orb =
  union{
    sphere{
      < 0, 0, 0>, 0.95
      texture { orb_sea_texture }
    }
    sphere{
      < 0, 0, 0>, 1
      texture { orb_land_texture }  // pole on Y axis
      rotate < 000, - orb_focus_lon, 000 >  // Bring focus into YZ-plane
      rotate < orb_focus_lat, 000, 000 >  // Bring focus over Z axis
    }
  }