I tried to use this in my IRTC entry, but it produces the blocky hf
effect we're all familiar with, plus you can't use the smooth keyword
anymore. On the upside, you can use non-flat blocks by adding a smooth
function...

Tom Melly wrote:
> 
> have I imagined it, or can you use an hf as a pigment and then use that in an
> iso-function?
> 
> If so, can someone post a quick example?
> 
> --
> #macro G(D,E,F)#local I=array[3]{D,E,F}#local B=0;triangle{#while(
> B<3)#while(I[B])A[mod(I[B],10)]+#local I[B]=div(I[B],10);#end<-5,-
> 2,9>#local B=B+1;#end}#end #local A=array[7]{x,x*2,x*4,y,y*2,y*4,z
> }light_source{-x*6-z*9,1}mesh{G(105,10,146)G(105,246,10)G(105,56,
> 146)G(105,1256,246)G(1256,126,220)G(22156,2216,201)pigment{rgb 1}}//TM

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