Re: [NTG-context] ConTeXt-defined colours broken in TikZ in MkIV with latest betas

16 Apr 2015

      Hi Hans

is it correct, that with the new beta one can just use rgb-colors using
tikz or is there a bug preventing the usage of cmyk-colors as it used to
work before?

Thanks!

Christian

PS.: See mail below for MWE showing false cmyk colors in tikz.

2015-04-14 11:54 GMT+02:00 Christian Prim :
...
Thanks Hans for clarification. But even with simple context color models
(that worked before) I get other colors.
MWE:
\usemodule[tikz]
\setupbodyfont[40pt]
\starttext
\definecolor[mycol][c=0.23,m=0.58,y=0.88,k=0.45]
\definecolor[mycol_h][c=0.115,m=0.29,y=0.44,k=0.225]
\definecolor[mycol_q][c=0.055,m=0.145,y=0.22,k=0.1125]
\startcolor[mycol]
{\bfa •••••••• Test}
\stopcolor
\starttikzpicture
\fill[mycol] (0, 0) rectangle (2,4);
\fill[mycol_h] (2, 0) rectangle ++(2,4);
\fill[mycol_q] (4, 0) rectangle ++(2,4);
\stoptikzpicture
\stoptext
I'm not so familiar with metafun, so I couldn't do the rectangle with
metafun (the different colors between context/metafun and tikz would
certainly be better visible so). But the bullet shows, that the text color
isn't the same as the tikz-figure. But they should as they are identical.
Something must have changed in color handling.
Christian
2015-04-14 10:42 GMT+02:00 Hans Hagen :
...
On 4/14/2015 10:29 AM, Christian Prim wrote:
...
Thanks Hans for the fix!
I have noticed, that spotcolors can be used in tikz, but they are
darker. Is that wanted or a bug?
they will map onto cmyk or rgb depending on definitions ... don't expect
advanced context color models to work with tikz (but they do work with
metafun)
Hans
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