mirror of https://github.com/GNOME/gimp.git
12b2abce7c
This is used for the gimp_color_is_perceptually_identical() function, because the Euclidean distance in LCH is extremely limited, if not wrong in many cases. Indeed LCH is not perfectly perceptually uniform, and for this exact reason, the CIE defined the specific Delta E algorithms. Later versions are also based on LCH values, so my intuition to use it for distance was on a good start, yet these algorithms were refined a few times to allow for corrections in perceptual uniformity imperfections. This was in particular needed to verify if a color is out of a CMYK space gamut. The idea is to compare the distance of the RGB (or other) and the CMYK version, since we cannot just check if the CMYK color is out of the [0; 1] range (it never is). Instead if both colors are perceptually identical, then we consider that the RGB color was inside the CMYK space gamut. The naive algorithm was giving any (or nearly) color as out-of-gamut. Now using CIEDE2000, I get a much nicer results. |
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| .gitlab | ||
| .vscode | ||
| app | ||
| app-tools | ||
| build | ||
| cursors | ||
| data | ||
| desktop | ||
| devel-docs | ||
| docs | ||
| etc | ||
| extensions | ||
| icons | ||
| libgimp | ||
| libgimpbase | ||
| libgimpcolor | ||
| libgimpconfig | ||
| libgimpmath | ||
| libgimpmodule | ||
| libgimpthumb | ||
| libgimpwidgets | ||
| menus | ||
| modules | ||
| pdb | ||
| plug-ins | ||
| po | ||
| po-libgimp | ||
| po-plug-ins | ||
| po-python | ||
| po-script-fu | ||
| po-tags | ||
| po-tips | ||
| po-windows-installer | ||
| themes | ||
| tools | ||
| .clang-format | ||
| .dir-locals.el | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .kateconfig | ||
| AUTHORS | ||
| COPYING | ||
| ChangeLog.pre-1-0 | ||
| ChangeLog.pre-1-2 | ||
| ChangeLog.pre-2-0 | ||
| ChangeLog.pre-2-2 | ||
| ChangeLog.pre-2-4 | ||
| ChangeLog.pre-2-6 | ||
| ChangeLog.pre-git | ||
| INSTALL.in | ||
| LICENSE | ||
| MAINTAINERS | ||
| NEWS | ||
| NEWS.pre-2-0 | ||
| NEWS.pre-2-2 | ||
| NEWS.pre-2-4 | ||
| NEWS.pre-2-6 | ||
| NEWS.pre-2-8 | ||
| NEWS.pre-2-10 | ||
| README | ||
| README.i18n | ||
| authors.dtd | ||
| authors.xml | ||
| authors.xsl | ||
| authors4gimp-web.xsl | ||
| gimp.doap | ||
| meson.build | ||
| meson_dist_script.sh | ||
| meson_options.txt | ||
README
------------------------------
GNU Image Manipulation Program
2.99 Development Branch
------------------------------
This is an unstable development release, an intermediate state on the
way to the next stable release: GIMP 3.0. GIMP 2.99 may or may not do
what you expect. Save your work early and often. If you want a stable
version, please use GIMP 2.10 instead.
If you think you found a bug in this version, please make sure that it
hasn't been reported earlier and that it is not just new stuff that is
still being worked on and obviously not quite finished yet.
If you want to hack on GIMP, please read the file devel-docs/README.md.
For detailed installation instructions, see the file INSTALL.
1. Web Resources
================
GIMP's home page is at:
https://www.gimp.org/
Please be sure to visit this site for information, documentation,
tutorials, news, etc. All things GIMP-ish are available from there.
The latest version of GIMP can be found at:
https://www.gimp.org/downloads/
We also have a website dedicated to documentation at:
https://docs.gimp.org/
2. Contributing
===============
GIMP source code can be found at:
https://gitlab.gnome.org/GNOME/gimp/
Resources for contributors:
https://developer.gimp.org/
In particular, you may want to look in the "Core Development" section. Some
articles of particular interest for newcomers could be:
* Setting up your developer environment: https://developer.gimp.org/core/setup/
* GIMP Coding Style: https://developer.gimp.org/core/coding_style/
* Submit your first patch: https://developer.gimp.org/core/submit-patch/
3. Discussion Channels
======================
We have several discussion channels dedicated to GIMP user and
development discussion. There is more info at:
https://www.gimp.org/discuss.html
For the real junkies, there are IRC channels (e.g. #gimp or #gimp-user)
devoted to GIMP on GIMPNet (a private free software oriented network).
Many of the developers hang out there. Some of the GIMPNet servers are:
irc.gimp.org:6667
irc.us.gimp.org:6667
irc.eu.gimp.org:6667
More discussion channels, such as forums, will be listed on the above
"discuss" page when they are moderated by a team member.
Links to archives of former discussion methods (e.g. mailing lists) are
also included in that page.
4. Customizing
==============
The look of GIMP's interface can be customized like any other GTK+ app
by editing files in `${XDG_CONFIG_HOME}/gtk-3.0/` (settings.ini and
gtk.css in particular) or by using "themes" (ready-made customizations).
Additionally, GIMP reads `${XDG_CONFIG_HOME}/GIMP/2.99/gimp.css` so you
can have settings that only apply to GIMP.
You can also manually change the keybindings to any of your choice by
editing: `${XDG_CONFIG_HOME}/GIMP/2.99/shortcutsrc`.
Have fun,
Spencer Kimball
Peter Mattis
Federico Mena
Manish Singh
Sven Neumann
Michael Natterer
Dave Neary
Martin Nordholts
Jehan