Margus Ramst wrote in message <39E6FBC3.74782879@peak.edu.ee>...
> I'm not sure how he got more than 2
> possible pattern values in his previous works, though...


You mean this ?

    #local FunPig1=function{pigment{object{Obj1 color 0 color 1/3}}}
    #local FunPig2=function{pigment{object{Obj2 color 0 color 2/3}}}
    #local FunPig3=function{pigment{object{Obj3 color 0 color 1}}}
    #local EscherFunction=function{FunPig1+FunPig2+FunPig3}

ABX

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