Alan Kong wrote in message ...
>
>  I am feeding coins through the ventilation slots in my computer. Are they
>coming through at your end? :)


// --------8<--------8<-----------8<----------8<-----------8<--------8<-----
#version 3.5;
#declare MoneyAmount=30;

#include "colors.inc"
#include "rand.inc"
#declare Coin=
  union
  { difference
    { cylinder
      { 0,y*.3,2
        pigment { Copper }
        normal
        { radial 1 slope_map { [0 <0,1>][.5 <1,0>][1 <0,-1>] }
          frequency 120
        }
        finish { specular .5 metallic reflection .1 }
      }
      cylinder { -y*.01,y*.05,1.9 }
      cylinder { y*.31,y*.25,1.9 }
    }
    union
    { difference
      { cylinder { <0,.2,.8><0,.35,.8>,1 }
        cylinder { <0,.2,.8><0,.36,.8>,.6 }
        box { <.001,.2,-.2><1,.36,.8> }
      }
      difference
      { cylinder { <0,.2,-.8><0,.35,-.8>,1 }
        cylinder { <0,.2,-.8><0,.36,-.8>,.6 }
        box { <0,.2,.2><-1,.36,-.8> }
      }
      scale <1,1,.8>
    }
    box { <-.08,.2,-1.7><.08,.35,1.7> translate -x*.25 }
    box { <-.08,.2,-1.7><.08,.35,1.7> translate x*.25 }
    pigment { Copper }
    normal { bumps .2 scale .1 }
    finish { specular 1 roughness .002 metallic reflection .1 }
    scale .5

  }

camera { location <0,1,-1>*(sqrt(MoneyAmount)*2+5) look_at 0 angle 35 }
light_source { <50,200,-100> 1 }
plane { y,0 pigment { granite scale 5 } }

#declare Loc=array[MoneyAmount]
#declare R=seed(2);
#declare Ind=0;
#while(Ind<MoneyAmount)
  #declare Dist=Rand_Gauss(0,1,R)*sqrt(Ind)*1.5;
  #declare Ang = rand(R)*pi*2;
  #declare Loc[Ind] = <Dist*sin(Ang),0,Dist*cos(Ang)>;
  #declare Ind2=0;
  #while(Ind2<Ind)
    #declare cx=Loc[Ind2].x-Loc[Ind].x;
    #declare cz=Loc[Ind2].z-Loc[Ind].z;
    #if(cx*cx+cz*cz<4 & Loc[Ind2].y=Loc[Ind].y)
      #declare Loc[Ind]=Loc[Ind]+y*.15;
      #declare Ind2=0;
    #else
      #declare Ind2=Ind2+1;
    #end
  #end
  object {
    Coin
    #if(rand(R) > .5)
      scale <1,-1,1>
      translate y*.15
    #end
    rotate y*rand(R)*360
    translate Loc[Ind]
  }
  #declare Ind=Ind+1;
#end

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