#include "colors.inc"    // The include files contain
      #include "shapes.inc"    // pre-defined scene elements
      #include "textures.inc" 


global_settings {

// uncomment this section to do radiosity
/*
assumed_gamma 1

radiosity {
pretrace_start 0.08
pretrace_end 0.02
count 50
error_bound 0.5
recursion_limit 1
}
*/
// end section on radiosity

}

camera {
        location  <0, 2, -8>
        look_at   <0, 1,  2>
      } 
      
sphere {
        <0, 1, 2>, 2
        texture {
          pigment {
           Blue_Agate    // Pre-defined from textures.inc 
          scale 4    // Scale by the same amount in all
                        // directions
          }
          finish {Shiny ambient 0}      // This finish defined in textures.inc
        }
      } 
  
  sphere {
        <4, 1, 2>, 1
        texture {
          pigment {
//		color rgb <1.0 1.0 1.0>*2.5 // uncomment this to do radiosity
            granite    // uncomment this to do raytracing
            scale 4     // uncomment this to do raytracing
          }
          finish {Shiny}      // uncomment this to do raytracing
//            finish{diffuse 1.0 ambient 1.0} // uncomment this to do radiosity
        }
      } 

// uncomment this section to do radiostiy
/*
sphere { // sky for radiosity
  <0, 0, 0>, 1
  texture {
   pigment {
     gradient y
     color_map {
       [0.0 color rgb < 0.2 0.2 1 >]
       [0.3 color rgb < 0 0 0 >]
     }
   }
   finish { diffuse 0 ambient 1 }
  }
  scale 10000
  hollow on
  no_shadow
}
*/
// end of section to uncomment to do radiosity


 plane {
        <0, 1, 0>, -1 
        pigment {
            DMFWood3    // Pre-defined from textures.inc 
            scale 4     // Scale by the same amount in all
                        // directions
        }
finish{ambient 0}
      } 
// uncomment these to do raytracing

light_source { <2, 4, -3> color White} 
light_source { <-2, 4, -3> color White}