Fill_painter broken and colordistance in autolayer

[Casper Boemann]

Hi

From: "Boudewijn Rempt" <boud at valdyas.org>
> Bart is the maintainer of floodfill; no doubt he'll be willing to find a
formula
> to make floodfill work with your code & his ideas -- he already mentioned
some colour
> space dependencies in the code.

The colorspace talk was more directed at you as you are the one fiddeling
with lcms , and perhabs you know how to implement such a function.

As an update to my previous mail luv is the prefered model for color
distances as it is a perceptual model based on the full gamut model XYZ.

in luv the colordistance = sqrt(l*l + u*u + v*v)

Percpetually uniform means that two colors that are equally distant in the
colorspace are equally distant perceptually

So - in short - can lcms provide XYZ values or even better luv values

if we have XYZ then we can compute luv ourselves

see http://semmix.pl/color/models/emo111.htm
and http://www.nacs.uci.edu/~wiedeman/cspace/me/infoluv.html

best regards
Casper Boemann