(07-03-2018, 10:27 AM)rich2005 Wrote: Some screenshots to go with Blighty's post
Making a seamless pattern (sometimes called a seamless tile) can be a bit of a dark art.
A clip from a photograph of a beach should be straight forward.
Use some common sense when selecting a area, for example avoid cutting noticeable objects in half.
Made a mess of this screenshot but it is the rectangular selection tool and a selection 500x500 pix. Size all depends on the image. https://i.imgur.com/UxrgFoD.jpg
Copy and that can be used in the patterns dialogue, the very first, the clipboard pattern.
If this is filled into an image (bucket fill or drag from dialogue) very probably joins will show https://i.imgur.com/tunvrlw.jpg
One way to make seamless is Filters -> Map -> Tile Seamless In Gimp 2.10 you get a nice on canvas display, Gimp 2.8 just apply the filter. https://i.imgur.com/jAlZ1mN.jpg Copy to the clipboard to test, Copy and paste as a new image and export as a png
Hopefully that tiles a little better: https://i.imgur.com/0aaCQ2J.jpg
Another way is a plugin resynthesizer which you might or might-not have installed.
Thanks a lot for all that. I'm off and running.
I see what you mean about the patterns and the seams. I dislike the whole pattern thing, actually. I've had it happen on some of my web site index pages where html fills them with patterning.
My beach sand or pebble thing is hopefully too amorphous for that to happen... I'm after more of a texture than a 'scene' so to speak.
One of the effects I want, for instance, is metal effects - a wash of 'stainless steel' or 'aluminium' or copper and I hope to get it this way.
Is this right? I've got a copy of your whole post in my reply edit area here. Like a reply with quote or something. I don't remember that happening previously.... I'lll see what happens...
Hmm.... yes, it all appeared. No need for alll that. I guess I should just delete what's not needed....