A quick seamless-helper to make it easy to draw seamless textures. After installation it adds three entries in "Layer/Swap" so that the layer you work on has its four quadrants, or right/left sides, or top/bottom swapped so that you can work on the "seams" easily...

For instance:

• Draw on the center (1)
• Then use the script to swap center and corners (2)
• Draw again on the center (3)
• Swap again (4)
• Swap left/right to work on the vertical seam (5,6)
• Swap left/right again, and swap top/down to do the horizontal seam (7,8)
• Swap top down again: finished (9)

Test:



Caveat and gotchas:

• The way it's written, it should work on 2.6 (with Python), and may no work in a layer group on 2.8.
• If you don't come back to the original positions before changing the swap direction, you will be given an occasion to play a low-cost equivalent to Rubik's cube with you own images.

Enjoy.

Thank you Ofnuts. This is really cool.


Pattern attached

Awesome! It works perfectly on 2.6.12, and it's much simpler to use than I expected. Thank you so much, this'll be a real timesaver.

Actually even more efficient/useful on random/irregular patterns:

Whoa! Really cool, ofnuts! I like it!

its a bit like magic

thank you ofnuts, another very useful script !

I used plasma and the smudge tool to clean up the edges on this one. Worked pretty nicely.

ofnuts: oooh, thank you!!! i've been wanting something like this for a long time, so good!

Thanks all for the appreciation... actually on of my life's big mysteries is why nobody did come up with such a script before... unless I overlooked one somewhere...

ahhh.....

I am sure that (for part) the marked similarity to
layer -> transform -> offset -> offset by x/2 y/2
has been noted

nice plugin though.

Augggh In any case that also shows me how I can optimize my code... suddenly becomes much simpler

i like your script a lot better, dabbled will the offset option, but couldnt make much out of it

Uploaded a new version (1.0) on SourceForge:
- now uses the offset() instead of the over-clever cut/merge method, so it works for any layer anywhere
- to work correctly with layers with an odd dimension, will use negative offsets the second time around
- as a consequence there is also a built-in protection against the RUbikc's cube effect, you have to go back to the original to change the swap method
- if the layer is linked, the script will apply to all linked layers with the same dimension and position (ie, all those that exactly overlap the active layer)

That's a very different animal... it creates a pattern, like "Make seamless" while my script just helps making it...

This script is freakn genious.
I was thinking of some hack like extending over the borders and then copying borders over top but its flawed in that you don't know which goes over top of what.
This swapping solved that.... so clever.

Did you also add code to prevent user from scrambling it up? Because i notice i can't swap in a different direction until i do the reverse swap of previous. If so that's even better. At least that's what i think is preventing me from doing stupid swaps.

Yes, there is some scrambling prevention in the code. The script uses "parasites" to remember what state the layer is in.

I'd like to edit this plug-in so it appears under the name of 'Seamless Helper' instead of 'Swap', so i can more easily remember and find it.

I found an entry under Registration: menu='<Image>/Layer/Swap' and edited it.
Is that all it takes or is there more code i have to change ?

Actually for plug-ins such as python or executables you should edit the pluginrc instead.
Its in the userName/.gimp-2.8 folder. Open it in Notepad ++ or some other similar notepad program and search for the word "Swap" and it should show you in the pluginrc file where it is listed as their may be many listings.
Then just change it to whatever you want (as you have in the above post). Save the pluginrc file and reload GIMP. This way you're not messing with the python file at all. Just a suggestion.

just a splash to remind us of this amazing filter featuring mario bg theme.