#include "functions.inc"
#include "math.inc"

global_settings { 
  max_trace_level 50
  assumed_gamma 1
  ambient_light 1
  noise_generator 3
#if(1)
  radiosity { 
    pretrace_start 16/image_width
    pretrace_end   4/image_width
    count 101            
    nearest_count 15     
    error_bound 0.3    
    recursion_limit 2   
    low_error_factor .02
    gray_threshold 0.0  
    minimum_reuse 0.001 
    brightness 1        
    adc_bailout 0.001/2  
    normal on
  }
#end
}

background { color rgb 0.1*<pow(4/7,4),pow(5.5/7,4),1> }

#declare camPos = <12, 13.5, -17.5>;
#declare camLookAt = <0,0,20>;
#declare camAngle = 60;

camera {
  ultra_wide_angle
	up <0, 1, 0>
	right x*image_width/image_height
	location  camPos
	look_at   camLookAt
	angle     camAngle
}

difference {
  box {-20,20}
  box {-19,19}
  pigment { rgb <.9,.95,.9> }
  finish { ambient 0 diffuse 1 }
}

union {
  box { -<5,1,5>,<5,0,5> scale 1.02 pigment { rgb 1 } finish { ambient 0 diffuse 1 } }
  box { -<5,1,5>,<5,0.02,5> pigment { rgb <1,.95,.9>*2 } finish { ambient 1 diffuse 0 } }
  rotate 30*z
  translate <-5,-7,15>
}