GIMP's new LCH blend modes are wonderful. But trying to use these new
blend modes without the proper supporting tools is sort of like being
given a new Aston-Martin with a 35-mile-per-hour governor on the engine.
To make the LCH blend modes truly useful GIMP needs:
* an LCH Hue-Chroma tool.
* LCH color sliders added to the "Change Foreground Color" dialog.
* the Luminance blend mode in addition to the LCH Lightness blend mode.
There are already more or less useable patches for the LCH Hue-Chroma
tool and LCH color sliders
(https://bugzilla.gnome.org/show_bug.cgi?id=749902), and for the
Luminance blend mode (https://bugzilla.gnome.org/show_bug.cgi?id=753163).
Adding the LCH Hue-Chroma tool and LCH color picker sliders for GIMP
2.10, right alongside the eventually-to-be-deprecated(?) HSV
Hue-Saturation tool and HSV color picker sliders, would allow GIMP users
a chance to adapt to LCH before HSV is summarily removed from the UI.
How to split tone digital images using LCH and Luminance blend modes
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