r/GIMP

hey i recently updated from 2.8 ro 3.2.4 and see that everything is big and looks bad compared to back then .... while i already scaled down the text size to 90% and changed the theme color and symbols there are still many things that are so different and bad looking, so i was wondering if there are any options i could change to fix that.

here my gimp 2.8

and here the much ugglier 3.2.4

many of my problems are hre with the 3.2.4 version with the alignment of symbols, the new design for boxes like these drop menux for, for example, px, inches, millimeters and such. Also what i noticed, the headlines like Layer doesn't show icons anymore, only text. which is very tricky for someone who used to recognize options by their icon more then their text xd.

(already tried to use more modern versions of gimp years ago, back then i had he same problem, everything looks worse and seems more complicated xd)

Even when setting the pencil brush size to 2.00, its still 3 pixels wide. How do you make it 2 pixels wide?

I was able to take a jpg image that was a picture taken of an big old yellowed map. Black lines on what is now yellowed text. I could use threshold to make it just black and white, then Invert to change it to white on a black background, the do a color exchange to make the black areas another color. Then run the invert again to make the background black and the lines and text of the drawing the color. From there I have to do some other steps to georeference it and get that in a format that two different gis systems with some different requirements can use.

I got it figured out for that image. I have some other old map images. These were available online as pdfs. I can open them or import them into GIMP. I've tried as layers, as images, setting the create transparent layer. I've also tried exporting as a jpg or tif and trying those. I wanted to do the same with them, but they behave differently.

I can run threshold and invert and they behave normally. If I try to do the color change. I can turn the black to a color and get white lines, letters, etc on the colored background. But when I try to use invert like with the first image I get white lines and text, etc but the background is white.

It seems there is something about this image. The other images from PDFs act the same way.

Anyone have any ideas what it might be? Is there some sort of command or app (linux) to see about the structure/features of an image to find out what they are?

This pops up when I go to change foreground and background color.

What is this image sampler? Why does it pop up instead of the true and time tested color picker that I have to click through? I think it would be way more useful if this was availiable from the color picker, instead of how it is now. I don't really like it as it has broken my workflow a little bit. I understand it is more fitting for an image editor, but could we just get an option to put it behind the classic color picker please? It would be much better.

EDIT: It's because I am working with an indexed image. Now everything makes sense. Sorry y'all.

Hi I am looking to make some sprites for a project within GIMP that will be used in Unity. For context, the sprites are from a top down view and will have basic animations placed in Unity.

YouTube tutorials show 3 main ways to import:

1: upload the edit file directly to unity. Unity will identify and automatically resolve the layers (I've only seen this work with Photoshop.

2: export the GIMP file with all layers separated, then import to unity as a multiple sprite file.

3: export each layer independently and upload them independently.

Which method works best and what tricks have you all learned that I may be missing?

Hi, after a lot of tinkering, I was able to find a solution to the problem presented in this previous thread.

This might be useful to some of you, so here is some example code:

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# your standard imports, don't forget Gegl
import gi
gi.require_version('Gimp', '3.0')
from gi.repository import Gimp
gi.require_version('GimpUi', '3.0')
from gi.repository import GimpUi
gi.require_version('Gegl', '0.4')
from gi.repository import Gegl # << Gegl needed

# [...] other imports [...]

# needed for this example
import random

#
# [...] some code [...]
#

def randomColors(layer) :
    # example on how to iterate over pixels with Gegl and apply these in batches
    # this is much faster than drawing one by one with Gimp.Drawable.set_pixel()
    # important : the changed pixels can't be undone, it's better to draw them on a new layer
    
    thisBuffer = layer.get_buffer()
    startx = 100
    starty = 100
    sizex =   80 # region size, maybe not too huge? iterate if necessary?
    sizey =   80
    
    rectangleRegion = Gegl.Rectangle.new(startx, starty, sizex, sizey)
    
    bufferSize = sizex * sizey
    bufferData = []
    i = 0
    
    while i < bufferSize :
        
        # attribute some random values to rgb
        r = random.randint(0,255)
        g = random.randint(0,255)
        b =  random.randint(0,255)
        
        bufferData.extend([r, g, b])
        
        i += 1
        
    thisBuffer.set(rectangleRegion, "RGB u8", bufferData) # << this is where we write pixels!
    layer.update(startx, starty, sizex, sizey) # << necessary refresh

Edit:

Not sure about the size of the rectangular region you work on, the variable used to iterate doesn't seem to load more RAM than a regular layer, and GIMP frees the memory slowly after the plugin closes.

By default, when zooming and erasing to transparency GIMP automatically changes the background color to a sort of middle grey tone. I'm working with some black and white images and the middle grey tone just muddies what I've erased.

Edit: To clarify, I'm speaking about the automatic color that GIMP adds over the transparency grid when you zoom in on pixels. Not the autofill color you get when erasing without an alpha channel, and not a second layer beneath the primary one with another color. Although that method came to mind when I was asking this question, and definitely fixes my main issue. I'd still like to know if it's possible to change that weird zoom-mask-thing.

Anyone else is having issues downloading GIMP (direct download) from the website? I tried both Mac and Windows.