/*
 a*x*y^2+a*x*z^2+b*x^2+c*y^2+c*z^2-0.1 = 0
 
 <0,0,0,b,a,0,0,a,0,0,0,0,c,0,0,0,0,c,0,-.1>
 
*/

#include "colors.inc"
#include "stones.inc" 
#include "metals.inc"
 



camera {orthographic  location <0,8,-10>*2 look_at<0,0,0> angle 60}
light_source { <-10,18,-20> color White } 
light_source { <10, -1,-10> color rgb <1,0.6,0>*0.7  }
background{White*1}


#declare a=1;
#declare b=-1;
#declare c=1; 

union {                                                            
    poly {3, <0,0,0,b,a,0,0,a,0,0,0,0,c,0,0,0,0,c,0,-.1>
        clipped_by{sphere{<8,0,0>,10}}
        pigment{rgb <0.7,0.95,1>*0.96 transmit 0.75}
        finish {ambient 0.2 diffuse 0.3 reflection 0.08 roughness 0.001 specular 0.8} 
     }
     /* */
     intersection{
        poly {3, <0,0,0,b,a,0,0,a,0,0,0,0,c,0,0,0,0,c,0,-.1>}
        cylinder{<1,0,0>,<12,0,0>,10}
         texture { pigment { leopard
                                  color_map {                                      
                                      [ 0.6  color red 0.9 green 0.9 blue 0.4 filter 0.99]
                                      // [ 0.6  color red 1 green 0.95 blue 1 filter 0.8]
                                      [ 0.4  color red 1 green 1 blue 1 filter 0.2]
                                     } // color_map
                                  
                                  scale 0.02
                                  } // fin pigment
             
                          finish { diffuse 0.2 ambient 0.6 reflection 0.1 roughness 0.01 specular 0.8 }
                         }
        scale 0.9 }
 
    rotate<-80,-20,90>
    translate <0,-10,0> 
}