Mike Williams <nos### [at] econymdemoncouk> wrote:
> Wasn't it B. Gimeno who wrote:
> >This one is an image made with an old version of pov-ray.
> >
> >The pigment is very simple.
> >pigment {
> >  checker
> >    color 1
> >    color 2
> >    color 3
> >    ...
> >}
> >
> >How could be made TODAY this effect avoiding error messages?
>
> box {-4.999,4.999
>   pigment {
>     function {(floor(x)+floor(y)+floor(z))/3}
>     colour_map{
>       [0/3 rgb x]
>       [1/3 rgb y]
>       [2/3 rgb z]
>       [3/3 rgb x]
>     }
>   }
> }
>
>
> The .999's are there to prevent the colour changes happening exactly on
> a face or edge, which cause the pigment equivalent of coincident
> surfaces.
>
> --
> Mike Williams
> Gentleman of Leisure

So elegant and concise!

My own solution was at least five times longer.
Learned something again.

Abe

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