/*

 S:=a*x^3+b*x^2+c*x-y^2-z^2
n:=4
suite:=<a,0,0,b,0,0,0,0,0,c,0,0,-1,0,0,0,0,-1,0,0.]]
*/
#include "colors.inc"
#include "stones.inc" 
#include "metals.inc"
 



camera {orthographic  location <0,15,-10>*2 look_at<0,0,0> angle 9.5}
light_source { <-10,18,-20> color White } 
light_source { <10, -1,-10> color rgb <1,0.6,0>*0.7  }
light_source { <0,5,-20> color Yellow*0.8}
background{White*0.95}  //  SkyBlue*1.2}
//-------------------------------------
#declare a=-0.2;
#declare b=1.4;
#declare c=0.01; 
#macro surf(tex,cx,r)                                                            
 poly {   3,<a,0,0,b,0,0,0,0,0,c,0,0,-1,0,0,0,0,-1,0,0.>
                clipped_by{ sphere{<cx,0,0>,r}}
        texture{ tex }  //    
  
  }
#end  
//--------------------------
#declare text1=texture{     
       T_Chrome_5A
       finish {ambient 0.2 diffuse 0.2 reflection 0.3 roughness 0.001 specular 0.8} 
     
};
//------------------------- 
#declare text2=texture{     
       T_Gold_5A
       pigment{ Gold transmit 0.4}
       finish {ambient 0.2 diffuse 0.2  roughness 0.001 specular 0.1} 
       
};
//-------------------------
union{
        surf(text2,4,4)
        surf(text1,-10,10)
        
    scale 0.3
    rotate<0,50,-90>

}





   /* normal {
           granite 1
           turbulence 0.8
           scale 0.5
           accuracy 0.2
             } 
  */