Hi,

I did not know that. Let's call it: effect by accident :-)

Rene

"Andrew Wilcox" <awi### [at] unpuzzledcom> wrote in message
news:3d4ab15e@news.povray.org...
> I don't know if you intended this but you created the invisible spots
> optical illusion...
>
> Interesting...
>
> http://www.grand-illusions.com/movingspots.htm
>
> --
> #macro Q(A,E,W)box{-A/2,A/2pigment{rgb 9*W}translate E*A+W/1000}#end#macro
> M(D,E)#local A=1/pow(3,D);#if(D<3)#local
C=D+1;union{M(C,1)M(C,x+y)M(C,x+z)
> M(C,y+z)M(C,x+y-z)M(C,x+z-y)M(C,y+z-x)M(C,x-y)M(C,z-x)M(C,y-z)M(C,y-x)M(C,
> x-z)M(C,z-y)M(C,x-y-z)M(C,y-x-z)M(C,z-x-y)translate A*E}#else
Q(A,E,x)Q(A,E
> ,y)Q(A,E,z)#end#end union{M(0,0)rotate<45,145,0>translate z*2}//Andrew
> Wilcox
>
>
>

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