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List:       gimp-developer
Subject:    [Gimp-developer] Gimp plug-ins to GEGL operations
From:       thomas.manni () free ! fr
Date:       2015-05-17 11:14:12
Message-ID: 145057348.669330326.1431861252886.JavaMail.root () zimbra12-e2 ! priv ! proxad ! net
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Hi,
some time has gone since my last plug-in port to GEGL.
I would like to know if some reflections has already been made concerning some \
technical issues that made several plug-ins' ports problematic :

1. Plug-ins that enlarge (or reduce) the drawable size

Currently, Gimp does not take into account the resulting output buffer extent of the \
gegl operation.

- Filters > Light and Shadow > Drop shadow
- Filters > Map > Tile
- Filters > Distorts > Curve bend


2. Plug-ins that produce a new image (may be optional)

Should these plug-ins stay gimp plug-ins (to be able to create a new image), and use \
a gegl graph in them to apply the related operation ?

- Filters > Map > Tile
- Colors > Info > Smooth palette


3. Plug-ins that use GimpGradient

Being able to give a GimpGradient parameter to a gegl op would provide the ability to \
modify the gradient with the gradient editor, and have on-canvas preview in the same \
time.  I have a wip GradientMapTool that show how useful it could be : \
http://thomas.manni.free.fr/GimpGradientMapTool-test.webm

- Colors > Map > Gradient Map
- Filters > Distorts > Pagecurl
- Filters > Light and Shadow > Gradient Flare
- Filters > Render > Nature > Flame
- Filters > Render > Fractal Explorer


4. Plug-ins that use several previews / some kind of editors

Some plug-ins provide multiple small previews that simply can not be removed without \
losing an important aspect of their functionalities.

- Colors > Filter Pack
- Filters > Render > Pattern > Qbist
- Filters > Render > Fractals > Flame
- Filters > Light and Shadow > Gradient Flare
 

Thomas Manni
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