Thank you saulgoode for helping me with directions to finish this script.

1. make sure you have the latest version of the HatchSelectionLayer.scm <- found in the first post of that thread.

2. You should have an image open in RGB mode, the script will reduce the number of colors down to
same number of hatches (one hatch for each color), it will then convert your image back to RGB then does the auto-hatching for you. It will take some time.


Script will be found under Script-Fu->Create New->Auto Hatch Layers

UPDATED preview of the settings (changed to options between "Lines","Squares","Circles","All"
"All" will alternate through "Lines","Squares","Circles" as it does each hatch so you get a combined effect

Here are some examples using the same image with different settings.

The script currently's maximum number of hatches is 10...i didn't think i needed more but i guess with this image i used 30.. just updated the script maximum to be 255, but i doubt you'll need that many but if you do you can it might take a long while though if you do that many hatches.
test out with 5 and increase as needed.

other prerequisites? I got:
Auto Hatch Layers Warning
Error while executing script-fu-auto-hatch:

Error: (<unknown> : 25099443) eval: unbound variable: script-fu-hatch-selection-layer

this one from other thread:
1. make sure you have the latest version of the HatchSelectionLayer.scm found in the first post.

and in turn that has a requirement for the pattern set to clipboard.

thanks Rich
I read that warning, but didn't understand it was referring to a DIFFERENT THREAD (normally referring to the "first post" is referring to the first post of the SAME thread which could become a multipage one, so....my fault, thanks!)

using 7 hatches, it never ends (or -better- it stops w/o any error on layer hatch #6)
I wait until the script is tested by someone else...

I noticed that as well, I think it is the 255 value in line 104



@trandoductin
Just my opinion but the minimum value for"Hatch Grid Width and Height" (10, both scripts) is a bit 'coarse' for small images, maybe 5 as a starting value.

I agree with Rich about the "minimum", I also like to get thinner lines.
I succeeded in getting an output, but I was obliged to create my own version of the script removing the undo capability otherwise it always crashes because of space usage -in my PC- on images of nowadays "common" size

Just tested it. Only bug that I see is when you first run it (just after opening GIMP). It chooses the default background pattern for whatever reason. Changing that to the Clipboard pattern fixes all (same issue with your original script; strange). No biggy though. Thanks Tran and all that helped with this one. I did do a test (not showing; not a good image) and it was pretty cool.

@Tin:
To get around the problem of the user having to pre-select the Clipboard pattern, use this trick by Rob-A:

This just extracts the first name from the list of patterns - which is always the Clipboard.

[Using the above code is better than (gimp-context-set-pattern "Clipboard") because the actual name of the clipboard pattern is locale-dependent. Rob-A's trick will work for all locales.]

BTW
I notice that you're not saving the caller's context in either script.
I think the first script (HatchSelectionLayer-x.scm) could really do with:

the outcome using defaults as shown

...and setting ON "Hatch With Rectangle"

Just entered this in the beginning of the Auto version and it works great jontait; thanks for the info and here's RobA to the rescue again.

Thanks JT.
I updated the 1st script to push context and set it to use clipboard pattern.
And also changed both scripts to have minimum gridwidth/height of 5 (default is still 10 but you can set it to 5).

using a better source image

You made me update again Tran. lol

Everything works now. Just one more request (but could be complicated so not necessary). It would be cool to combine both straight and square options within the same render. Say, pick the square for the mid or low level colors for instance. Not sure if this would make the Script way too complicated or not. Still, thanks again Tran and all that got this one working.

Suppose I should share a result. Need to find a better subject.

lylejk

update your script.

I added an extra toggle called "Combine Rectangles and Lines" and it'll do rectangles for darker colors
about half of the colors ...so if you did like 6 colors 3 darker colors will be rectangles and 3 will be lines.
if you do 5 colors (I think it 5> 2.5, 4>2.5, 3> 2.5 so i'll do 3 colors in rectangles and 2 brighter will be in lines).

Tin, one question:
if I look to the various areas of the last image I posted, I notice that in one area (attached) the stripes are made with different nuances; is this wanted?


(what looks white is transparent)

dinasset,
i am not sure i understand your question.

Oh I see what you mean, I am not sure why that is, it's a repeated pattern so it shouldn't have different shades, i am not sure but if i had to guess i'd say it's probably computers trying to show patterns that aren't viewed at 100%. But I really have no clue at all.