camera {
  location<20,20,-30>
  look_at<0,0,0>
  right <image_width/image_height,0,0>
  up y
}

//light_source { <2000,2000,-2000> color White }

global_settings{assumed_gamma 1.3

        radiosity{
            pretrace_start 1 
            pretrace_end   1
            count 400 
            error_bound 0.05 
            nearest_count 1        // CHANGE - range from 1 to 3 - should correspond with pretrace_end
            recursion_limit 1    // CHANGE
            low_error_factor 1  // leave this
            gray_threshold 0   // leave this
            minimum_reuse 0.015  // leave this
            brightness 1         // leave this
            adc_bailout 0.01/2   // CHANGE - use adc_bailo        
        }


} 


box { 
  <-14,-10,1.5>,<14,10,3.5>
  texture { Aluminum }
}

plane { y,-11
  texture {
    pigment { checker color Black color White }
    finish {
      ambient .5
      specular 1.0
      roughness .001
      reflection .2
    }
    scale 10
  }
}

#declare Cap=union {
  cylinder { <0,5,0>,<0,6,0>,1.25 }
  difference {
    sphere { <0,6,0>,1.25 }
    box { <-10,0,-10>,<10,6,10> }
  }
  box { <-1.25,5.25,0>,<1.25,5.75,5> }
  texture { Aluminum }
}



#macro florcent_bulb(Height, BulbColor)
light_source {
    <0,0,0> color BulbColor
    looks_like {
        union {
            cylinder { 
                <0,-Height,0>,<0,Height,0>,1
                texture {
                    pigment { color BulbColor filter .9 }
                    finish {
                        diffuse 0
                        ambient .75
                    }
                }
            }
            cylinder { 
                <0,-Height,0>,<0,Height,0>,.75
                texture {
                    pigment { color BulbColor }
                    finish {
                        ambient 1
                        diffuse 0
                    }
                }
            }
            no_shadow
        }
    }
}
/*
  light_source {
    <0,-4,0> color BulbColor
  }
*/
  light_source {
    <0,-3,0> color BulbColor
  }
/*
  light_source {
    <0,-2,0> color BulbColor
  }
  light_source {
    <0,-1,0> color BulbColor
  }
  light_source {
    <0,1,0> color BulbColor
  }
  light_source {
    <0,2,0> color BulbColor
  }
  */
  light_source {
    <0,3,0> color BulbColor
  }
  /*
  light_source {
    <0,4,0> color BulbColor
  }
*/
#end


#macro Neon(BulbColor)
union {
    object { Cap }
    object { Cap rotate<0,0,180> }
    florcent_bulb(5, BulbColor)
}
#end


#declare PinkNeon=object { Neon(NeonPink) }
#declare BlueNeon=object { Neon(NeonBlue) }
#declare GreenNeon=object { Neon(Green) }
#declare RedNeon=object { Neon(Red) }
#declare OrangeNeon=object { Neon(Orange) }
#declare YellowNeon=object { Neon(Yellow) }
#declare BlueVioletNeon=object { Neon(BlueViolet) }

/*
object { RedNeon translate<-10,0,0> }
object { OrangeNeon translate<-6,0,0> }
object { YellowNeon translate<-2,0,0> }

object { GreenNeon translate<2,0,0> }
object { BlueNeon translate<6,0,0> }
object { BlueVioletNeon translate<10,0,0> }
*/

object { YellowNeon translate<-2,0,0> }
object { GreenNeon translate<2,0,0> }
object { PinkNeon translate<-6,0,0> }
object { BlueNeon translate<6,0,0> }