/*équations :
S:=2*z*x^2+4*z*x+2*z+y^3+y*x^2-y;
 */

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

 camera { orthographic 
          location <-2.5,0.6,-3>*0.75 look_at<0,0.2,0> }
 
light_source { <-4,5,-10> color White}
light_source { <-5,10,-20> color White shadowless}
light_source { <3,10,-10> color rgb <0.8,0.8,1>*0.5 shadowless}

box {<-20,-1.3,-20>,<5,20,5> 
      pigment {SkyBlue}   // Yellow
      rotate <0,5, 0>  
        }
//--------------------------------
union{
poly {3, <0, 1., 2., 0, 0, 0, 0, 0, 4., 0, 1., 0, 0, 0, 0, -1., 0, 0, 2., 0.>

  texture{
     /* pigment{ granite color_map{[0.0 rgb<1,1,0.7>][1.0 rgb<0.5,0.3,0>]}
             scale 0.08   } */     
     T_Silver_3C  
                    
  finish { ambient 0.5 diffuse 0.4 reflection 0.1
           specular 0.5 roughness 0.008 }
  } 
}
#declare r=0.01 ;
#declare b=5; 
union{
       cylinder{<.172e-28*b-1.,.840e-19*b+.410e-9,-1.00*b>,<-.172e-28*b-1.,-.840e-19*b+.410e-9,1.00*b>,r}
cylinder{<.276e-1*b-.887,-.113*b-.462,.993*b>,<-.276e-1*b-.887,.113*b-.462,-.993*b>,r}
cylinder{<.200*b-.574,-.384*b-.820,.900*b>,<-.200*b-.574,.384*b-.820,-.900*b>,r}
cylinder{<.508*b-.118,-.572*b-.994,.650*b>,<-.508*b-.118,.572*b-.994,-.650*b>,r}
cylinder{<.764*b+.36,-.524*b-.934,.387*b>,<-.764*b+.36,.524*b-.934,-.387*b>,r}
cylinder{<.918*b+.75,-.346*b-.660,.198*b>,<-.918*b+.75,.346*b-.660,-.198*b>,r}
cylinder{<.992*b+.97,-.121*b-.240,.614e-1*b>,<-.992*b+.97,.121*b-.240,-.614e-1*b>,r}
cylinder{<.992*b+.97,.121*b+.240,-.614e-1*b>,<-.992*b+.97,-.121*b+.240,.614e-1*b>,r}
cylinder{<.918*b+.75,.346*b+.660,-.198*b>,<-.918*b+.75,-.346*b+.660,.198*b>,r}
cylinder{<.764*b+.36,.524*b+.934,-.387*b>,<-.764*b+.36,-.524*b+.934,.387*b>,r}
cylinder{<.508*b-.118,.572*b+.994,-.650*b>,<-.508*b-.118,-.572*b+.994,.650*b>,r}
cylinder{<.200*b-.574,.384*b+.820,-.900*b>,<-.200*b-.574,-.384*b+.820,.900*b>,r}


        pigment{ Red }
}
union{
   cylinder{<-1,0,-b>,<-1,0,b>,2*r  }// droite
   torus{1,2*r rotate 90*x }  
   pigment { rgb <0,0.5,0>}
   }
  // axes ----------------------
 union{          
   #declare g=1.5 ;
   #declare r1=0.03;
  
  #declare k=4;// longueur fleche=k*r1
  #declare co=1.8;// rayon base=co*r1
cylinder{ <-g/2,0,0>,<g,0,0>,r1 }
  cone{ <g,0,0>,co*r1,<g+k*r1,0,0>,0  }
  
  cylinder{ <0,-g/2,0>,<0,g,0>,r1  }
  cone{ <0,g,0>,co*r1,<0,g+k*r1,0>,0  }
  
  cylinder{<0,0,-g/2>,<0,0,g>,r1  }
  cone{ <0,0,g>,co*r1,<0,0,g+k*r1>,0 } 
  pigment { Yellow transmit 0.3}
   
}
  //-
    clipped_by { sphere{<0,0.,-0.>, 4 } }
  bounded_by { clipped_by }
  scale 0.33
  rotate <-90,90,20>
  translate <0,0.2,0>
}

text {	ttf "times.ttf" "AE"
        0.5,0 
        pigment { Cyan*1.2 }
        scale 0.08
        rotate <0,40,0> 
        translate <1.9,-1.3,-0.4> }