https://bugs.kde.org/show_bug.cgi?id=391553
Bug ID: 391553
Summary: [wish] [Color-Smudge-Brush] new slider: color
variation
Product: krita
Version: git master
Platform: Compiled Sources
OS: Linux
Status: UNCONFIRMED
Severity: wishlist
Priority: NOR
Component: Brush engines
Assignee: krita-bugs-n...@kde.org
Reporter: i...@davidrevoy.com
Target Milestone: ---
Created attachment 111250
--> https://bugs.kde.org/attachment.cgi?id=111250&action=edit
[^ screenshot of a discution on the #krita Facebook group]
Hi,
In Krita 2.x, 3.x serie, a bug allowed the Color-Smudge Engine in 8bit RGB mode
to get extra mixing of orange/red in the resulting color on the canvas. It was
a glitch and was fixed in Krita 4.x making the Color-Smudge engine ten time
more predictable now in this colorspace. While this was a very welcome fix, the
bug affecting the previous version was also used as a feature; it was a way to
add a bit of color variation in the resulting stroke. That's why I'm opening
here a long term wish list feature for a brave soul who want to experiment
re-adding color sensors to the code of the Color-Smudge Engine :-)
How it could work:
==================
Maybe a way could be to add HSV sliders to the brush settings for this engine;
so it would be possible to offset the color saturation, lightness and hue in
time/pressure/fuzziness. The color affected could be the whole stroke and not
only input color (the color selected by the user, as the one used by Color-Rate
slider). Because HSV sliders would need to work even for "Blender" presets; the
one where there is no Color-rate.
New practical possibilities:
============================
- Create a blender preset that mix colors and make them more "greish/muddy" in
time.
- Create a wet brush with variation of hue in the final mixing, as if a
previous color was loaded on the brush and still leak colors in the final
mixing.
- Create a wet brush that diluate the color to white (high lightness) while
moving the hue in the process to simulate painting with bleach on ink
(marker/watercolor/fabric).
- Convert the Impressionism brush to Color-Smudge engine if the performance
allows it.
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