// Moire problem


global_settings { assumed_gamma 1.6}     // 2.2

#include "shapes.inc"
#include "colors.inc"
#include "textures.inc"



 
#declare distance_view=  

camera{location <100, 12, 70>
   direction <0.0, 0.0, 1.0>
   up  <0.0, 1.0, 0.0>
   right <4/3, 0.0, 0.0>
 look_at <15, 3, 30>  } 
 
  
camera {distance_view}

light_source {<200.0, 200.0, -150.0> colour red 1 green 1 blue 1 }     




  

plane { y, 0  
texture {pigment {color red .7 green .7 blue .7}
 finish {     
    ambient 0.5
    diffuse 0.5
    phong 0.75
    phong_size 25

  }  }   }


 
union{ 
box{ <0, 0, 0>  <10,  15, 60> } 
box{ <0, 0, 0>  <10,  7, 60>  translate <75, 0, 10>}
//                                                    ___     ___
// texture simulating trapeziod vertical cladding ___/   \___/   \___
//
 
 texture{
   pigment{
     gradient z  color_map{
     [0.    red 172/255     green 182/255     blue 184/255]        
     [0.24  red 172/255     green 182/255     blue 184/255]
     [0.242 red 172/255*1.2 green 182/255*1.2 blue 184/255*1.2]          
     [0.48  red 172/255*1.2 green 182/255*1.2 blue 184/255*1.2] 
     [0.482 red 172/255     green 182/255     blue 184/255]
     [0.76  red 172/255     green 182/255     blue 184/255]            
     [0.762 red 172/255*0.8 green 182/255*0.8 blue 184/255*0.8]        
     [1.0   red 172/255*0.8 green 182/255*0.8 blue 184/255*0.8]}     scale 0.24
   } 

  finish {     
    ambient 0.5
    diffuse 0.5
    phong 0.75
    phong_size 25

  }  }  
}