[Libreoffice-ux-advise] [Bug 104052] Add LibreColour HLC palette

https://bugs.documentfoundation.org/show_bug.cgi?id=104052

--- Comment #69 from V Stuart Foote <vstuart.foote@utsa.edu> ---
Created attachment 129799
  --> https://bugs.documentfoundation.org/attachment.cgi?id=129799&action=edit
the CIE HLC palette in charts by Hue spoke

(In reply to Christoph Schäfer from comment #66)
> Yes, please do this. I'd be very grateful. Thanks in advance for your
> efforts!

Attached is a suggested alternative layout in 12 columns with padding to
present the CIE HLC sRGB palette in 36 charts by CIE Hue color wheel spokes. In
essence the same layout as on the freieFarebe, e.V. color fan.

To test, simply add the SOC palette to the share/palette directory and restart
LibreOffice.

If this layout is preferred, it can replace the traditional packed SOC version
that was committed in master for 5.4.0 [1], and possibly be added for 5.3.1 if
strongly preferred.

@Christoph, I used sRGB values as you'd provided. But just to be sure, are we
certain we do not want to instead use the sRGB values for each HLC swatch as
listed on the color fan [2], so that we match the physical reference folks
might use for their process printing?

Stuart

=-ref-=
[1]
https://cgit.freedesktop.org/libreoffice/core/commit/?id=765826abcaa441d4d90ffbe75bc3c626c42e639b

[2] http://dtpstudio.de/cielab/downloads/hlcfaecher.pdf

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