Re: [Gimp-user] Image Rotation Auto Center

[Ofnuts <ofnuts gmx com>]

On 11/26/17 20:56, Stratos wrote:
> I'm looking for a way to set the auto center for rotation to 53, 672 instead of
> the image center. I have 1200 images to process and reducing even a few
> keystrokes makes a big difference. tks, S
Several ideas, depending on what you have to do and how good you are at 
scripting...

1) with ofn-preset-guides(*) you can define a pair of guides that 
intersect at (53,672) and add it to your image with one single keystroke 
(and add a keyboard shortcut to it, using Edit>Preferences>Shortcut). 
Then you can very quickly drag the center of rotation to that point when 
you are in the rottion tool.

2) with ofn-layer-straightener(*) you put two points on your image 
(using the Paths tool) (for instance on what should be the horizon, or 
what should be a vertical on a building), and the script determines the 
angle or rotation to apply to make that line on the image exactly 
vertical or horizontal. The script rotates the image around its center, 
but editing to force a different center of rotation is easy.

3) in addition to either of the above, ofn-file-next(*) can help you 
process files in sequence if their name contains a sequence number. With 
one keystroke, it will save the current file and open the next in the 
sequence.

(*) all the scripts can be dowloaded from here: 
https://sourceforge.net/projects/gimp-tools/files/scripts/ The ZIP also 
contains the doc. For more help with these scripts see 
https://www.gimp-forum.net/Forum-Extending-the-GIMP