global_settings {
  mm_per_unit 50
  subsurface { samples 50, 5 }

}
   
   
  
   
// ----------------------------------------

camera {
  location  <0.0, 2.5, -4.0>
  direction 1.5*z
  right     x*image_width/image_height
  look_at   <0.5, 1.0,  0.0>
}

sky_sphere {
  pigment {
    gradient y
    color_map {
      [0.0 rgb <0.6,0.7,1.0>]
      [0.7 rgb <0.0,0.1,0.8>]
    }
  }
} 
 

light_source {
  <30, 30, -30>
  color rgb <1,1,1>*1
} 
    
light_source {
  <10, 30, 10>
  color rgb <1,1,1>*.25
}    
// ----------------------------------------

// a checkered white marble / grey "plastic" plane
plane {
  y, -0.01
  texture {
    checker
    texture {
      pigment { color rgb 1 }
      finish{  
      ambient 0
        specular 0.6
        reflection { 0.2 }
        // marble physical parameters from Jensen et al. "A Practical Model for Subsurface Light Transport", Siggraph 2001
        //subsurface { <2.19,2.62,3.00>,<0.0021, 0.0041, 0.0071> }
      }
    }
    texture {
      pigment { color rgb 1 }
      finish{ 
      ambient 0
        specular 0.6
        diffuse 0.9
        reflection { 0.2 }
      }
    }
    scale 4
    translate <0.7,0,1>
  }
  interior { ior 1.5 }
}

// the classic chrome sphere
merge
{ 
cylinder { <1.5,0.0,1.5>, <1.5, 1.0, 1.5>, 0.7  }
sphere { <1.5, 1.0, 1.5>, 0.7 }
  pigment { color rgb <0,1,0> }
  finish {
    ambient 0 diffuse .5
    specular 0.7  roughness 0.01
    reflection { 0.01 } 
      
    subsurface { <1, 1, 0>*2, <0.000001, 0.2, 0.7>*1 }
    
  }   
  
   interior { ior 1.33 }     
   
}