: I never played with heigh fields however looking at documentation (6.5.1.5)
: only images are allowed.

  Heightfields can be created from functions. This is mentioned somewhere; if
it's not mentioned in the heightfield section, then I think a note should be
added there.

: But even if function as source could be possible
: then AFAIK using function's engine to evaluate values it could be a little bit
: slower.

  I said it's possible. I didn't say it would be as efficient.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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