#include "colors.inc"
camera {
    location  <0, 20, -100>
}
background { color SkyBlue }    

plane { y, -10
    pigment {
      checker color Yellow color Green
      scale 20
    }
}    

sphere { <0, 25, 0>, 40
    pigment { Red }
    finish { ambient .3 diffuse .6 phong 1.0 phong_size 20 }
}   

sphere { <-100, 150, 200>,  20
    pigment { Green }
    finish { phong 1.0 phong_size 20 }
}  

sphere { <100, 25, 100>, 30
    pigment { Blue }
    finish { phong 1.0 phong_size 20 }
}  

light_source { <100, 120, 40> color White} 
light_source { <-150, 120, 40> color White}   


fog {
    distance 150
    color rgbf<1, 1, 1, 1.0>    
    fog_type 2
    fog_offset 10
    fog_alt 30
}