Bonjour,

A small tool : The selections are reduced or increase by the parameter and saved as paths.

Access on the image with an active selection by :
Paths Iterative Reduction/Increase (Isohypse) ...

Edit : 20130628 : Version 5 : gimp-image-set-active-layer
Edit : 20130628 : Version 4 with Variation Of Distance Between The Paths : "No variation" "Variation +" "Variation -" "Random Spacing" & Coefficient Of Variation Of Distance (Variation + , Variation -)
Edit : 20130626 : Version 3 With a new option : "Reduction VS Increase " '("Reduction" "Increase Mode 1" "Increase Mode 2" "Increase Mode 3") and Paths Iterative Reduction/Increase (Isohypse) ...
Edit : 20130626 : Version 2 with a new option "Set the visibility of the paths (for merging ... manually ... ) " & Select > Paths Iterative Reduction 1

A word a day: http://en.wiktionary.org/wiki/isohypse

this could be useful, thanks !

I did it on a VERY large very square selection at 10 pixels (default value) and let me say it takes its sweet time lol...
Nothing against the script I was simply playing around trying to figure out exactly how it worked and managed to run it on a full Desktop background size square selection lol

Now that I got this figured out very cool!

One question how do you stroke all the paths? Do you have to do it by hand?

New version 2 with a new option "Set the visibility of the paths (for merging ... manually ... )".


Access on the image with an active selection by :
Select > Paths Iterative Reduction 1 (Isohypse) Ofnuts

samj: looks very cool, have to try this!

- Shift-click one of the paths to make them all visible/invisible at the same time
- Merge visible paths
- Stroke the resulting path

I also have a script to stroke all the paths, each on their own layer, so you can make an animation instead.

Hi Samj

This script is very useful for me
You could in addition to reduction could put to increase?

Thanks

New version 3 with a new option : "Reduction VS Increase " '("Reduction" "Increase Mode 1" "Increase Mode 2" "Increase Mode 3")

Mario Bross , there are 3 possibilities to increase selection.

cool !

Thank you so much Samj, very grateful

A script that literally begs to be played with.

This is pretty cool.

Very many possibilities with this one.

Bonjour,



New Version 4 :
Variation Of Distance Between The Paths : "No variation" "Variation +" "Variation -" "Random Spacing"
Coefficient Of Variation Of Distance (Variation + , Variation -)

another (probably) silly question by me.
because the script produces a series of (very nice) paths, I thought it could be possible to call path-blend afterwards (like with pursuit-curve), but at least in my environment I get the path-blend greyed out.
do I make something wrong? or should I perform some action before calling path-blend?
thanks

an addition to the previous question:
if I create simple isohypses from a rectangle, then I aside create a simple (default) pursuit-curve, I can run path blend from the image created by pursuit script but using the paths created by the isohypse script
thus, there are "characteristics" of the pursuit image that isohypse does not have
how may I add those characteristics?
thanks

@Dinasset

Select a layer before applying the brush or anything else.

Version 5 of this script does this automatically.

A couple years ago I posted a script that has one option (Shaped Inward) quite similar to this, but only inside selections:

viewtopic.php?f=9&t=2714#p34988

-Rob A>