Script "slice using guides" and "png export"

[Lamidetlm]

thank you for your responsiveness

(10-24-2022, 04:19 PM)Ofnuts Wrote: Merging all layers can be done with gimp-image-flatten (but this also removes any transparency).

Too bad I really need transparency..

(10-24-2022, 04:19 PM)Ofnuts Wrote: The equivalent to the "slice using guides" in the UI is plugin-guillotine

Good thing , it's work !


(Honestly, I don't really understand what I'm doing. I'm not a coder.)

Quote:gimp-file-save saves the image in whatever format is given as an extension (so as PNG if the file names ends with .png). You can also for a PNG save with gimp-png-save or file-png-save2. Note that all the save operation to "flat" files (PNG, JPG...) only apply to the  specified layer.

I tried the different "png export" the only one that does not crash my code is "file-png-save-defaults".
But it gives me a script that runs in a loop and always outputs .gimp files and not .png files

Code:

(define (script-fu-save-png Image layer)
 (let* ((i (car (gimp-image-list)))
        (image))
   (while (> i 0)
     (set! image (vector-ref (cadr (gimp-image-list)) (- i 1)))
     (plug-in-guillotine RUN-NONINTERACTIVE
                     image
                     (car (gimp-image-merge-visible-layers image 1))
                )
                
     (file-png-save-defaults RUN-NONINTERACTIVE
                     image
                
                     (car (gimp-image-merge-visible-layers image 1))                      
                     (car (gimp-image-get-filename image))
                     (car (gimp-image-get-filename image)))

     (gimp-image-clean-all image)
     (set! i (- i 1)))))



(script-fu-register
  "script-fu-save-png"
  "<Image>/File/Save PNG & Exit"
  "Save PNG file and exit GIMP."
  "kes"
  "kes"
  "October 2017"
  "RGB*, GRAY*, INDEXED*"
  SF-IMAGE         "Image" 0
  SF-DRAWABLE   "Layer" 1
)

---

Quote:This said, I have the gut feeling that this is the wrong way .... layers (so this would be you "flatten, slice and save").

I create textures that are used in several projects. On a large image of 2048*1536 pixels.
The obtimal format for the engine is 512*512px, so I cut the whole thing for each export.

Each project involves small variations / retouching of this image.

Working on the set is very convenient in my case.

But exporting 10 images manually each time is unnecessarily painful.

Your scripts seem rather suitable yes.
I would be interested in seeing this, at least to understand the structure of the code.
If you want to share I take it with joy