Karl Anders <kar### [at] webde> wrote:
> color_map
> {
>    [0 rgb <1, 0, 0>]
>    [1/3 rgb <0, 1, 0>]
>    [2/3 rgb <0, 0, 1>]
>    [1 rgb <1, 0, 0>]
> }

> so the best approximation to yellow is rgb<0.5,0.5,0> at 1/6.

> I feel that should be changed to
> color_map{
>    [ 0   rgb < 1, 0, 0 > ]
>    [ 1/6 rgb < 1, 1, 0 > ]
>    [ 2/6 rgb < 0, 1, 0 > ]
>    [ 3/6 rgb < 0, 1, 1 > ]
>    [ 4/6 rgb < 0, 0, 1 > ]
>    [ 5/6 rgb < 1, 0, 1 > ]
>    [ 1   rgb < 1, 0, 0 > ]
> }

  I'd say you are right. Linearly interpolating between the three RGB
components is definitely not the same thing as interpolating the hue
ring. While your proposed solution might still not be *exactly* the
same thing as a hue ring (more likely it's a hue hexagon, which is
just slightly different), it definitely is much closer.

-- 
                                                          - Warp

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