"Kenneth" <kdw### [at] earthlinknet> wrote:

>
> A  more accurate way of getting the pigment pattern's colors into grayscale
> would be to substitute a PATTERN for the PIGMENT; it's already in grayscale.
> I.e., pattern{bozo...} And--as far as I can tell from section 3.5.11.16 of the
> docs--such patterns have 16-bit resolution.
>

Hmm. I was assuming that eval_pigment could evaluate a PATTERN in place of a
PIGMENT.  That may be wrong.

I.e., if I did this...
#local Mask=pattern {granite poly_wave 2}
instead of
#local Mask=pigment {granite poly_wave 2}

would eval_pigment{Mask....)  still work even though Mask is no longer a
3-component pigment now, but a scalar quantity?

Ken W.

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