Good point I made the path have just one stroke by joining up the letters by hand, but anything goes including just drawing with a paint tool:



'Hue-Chroma' gives a different result to 'Hue-Saturation' so how do you choose which to use?

I'd like to call 'Hue-Chroma' from python but don't know how, I think there maybe some threads on calling GEGL from python. How do you do it from your batch script?

That sounds cool

Ella, Thanks for trying it out I'm loving the teapot

diagrajamal1, very nice kaleidoscope effect

It's very strange but in some recent examples I can't read the text

@Teapot
Glad you posted your plugin.
I have two minor comments about it:
- for animation plugins it should be possible to specify the number of frames (so steps=360/frame



- location in the menu: why not more adequate:
"<Image>/Filters/Animation/Animators"

Regarding Gegl (the hardest first step)

gegl_command by Kevin Payne & Claude Lion [cli345] here: viewtopic.php?f=9&t=18040&start=30p264354
(for the convenience of users, I paste this code into every plugin that uses GEGL - and it is required for Windows)

In your plugin you just need to replace the line:



to:


Quick comparison saturation & chroma:

Hi MareroQ
Nice idea to change the menu path, but in my humble opinion, adding "Animators" as a sub-sub-sub menu is becoming too long, I already did a change on the one I did downloaded, I did put it directly in "Animation" (no third sub menu)


Ella, teapot and diagrajamal1 your last ones very

Hi PixLab.

When you look at the code without trying it, "Animators" seem to create an extra submenu.
But it's not like that.
You've noticed that the "Animation" menu is divided into two sections;
- top: for various creative animations,
- lower: for generic tools?
Adding "Animators" just tells Gimpwi to place the plugin over the dash (and it doesn't show).
And one more thing: three dots [...] at the end of the plugin name indicate that the GUI has been displayed (no dots - the plugin will run automatically as there are no options to choose from)

A little test using an old gif I made.



I'm using the stand alone gegl (sudo apt install gegl)
My script is cave man style and it's easy to understand what it does. I'm interested in how Marero's works. The trick with applying to animation is getting the same number of frames in the effect and in the animation.

Thank you so much MareroQ, I just learn a lot from your very well explained "Animators"

Thus I have a question ,
Do you know if it's the same wording for others menus? In Light and Shadow (Filters > Light & Shadow) there are 2 dashes/3 blocks, how can you define the top/the one in between/ and the bottom?

Again a big-big

@ PixLab

I gave You a 'fish', not a 'fishing rod'...
This can be easily deduced from the "pluginrc" file or from the xml files in ...\share\gimp\2.0\menus\ (a bit more complicated).
You can also look at a specific plugin or script.

Sorry about that, some time I can be a bit too curious.



Thanks a lot, I'll take a look at it, I'll find a way

In all cases, than you so much MareroQ, I very much appreciated your help

MareroQ, Thank you very much for your explanations

I've made the menu changes you suggested.

Thank you. It looks like mainly the file image-menu.xml to see what the placeholders are. Are the conventions like that and the name three dots ... written down somewhere? If there is any documentation it would help to find out about other similar conventions I don't yet know

As you suggested I've switched to have the user specify the number of frames instead of the step.

The hue now starts at 0 instead of -180 to aid doing transitions like Tas_mania's.

Also added a reverse option:

Example output saved as as gif:

Reverse:


PixLab, I'm glad you're curious as you asked the questions I also wanted to know the answers to

That looks great

I think it would be good if the moderator (if he has time) moved the recent posts to a new thread: Gimp Scripts and Plugins/Rotate Hue. (Done!)

@PixLab
I think you misunderstood the proverb.
Just wanted to say that I should have added more information right away.

@Teapot.
There is no code of good rules for writing plugins.
The ones I've written about are by plugin guru Saul Goode (they're available in various old posts), but no one is forcing anyone to use them (sometimes I forget too).
Saul also wrote that the original image should always be preserved.
Typical solutions:
1. Execute the code on the duplicated layer (often unacceptable for animation - but you found a solution: when hue=0 it doesn't change the layer itself, only its name).
2. Move the active layer to the new image (requires adding a few lines of code).

You didn't write anything about Gegl?
Maybe consider an option:




You are using the Apache license version 2.0 (I don't know the details, but there will be no more comments or ready-made solutions from me - sorry Tas_mania).

However, I can post my simple code that anyone can use:
moves the active layer to the new image, removing the layer name extension (if any). In the menu: Layer ➤ Active Layer to New Image

MareroQ, Thnak you for your reply


Thank you for your help with this, I've still got it to do but have had limited time available these last two days.


The Apache license version 2.0 is a standard open source license, is there a problem with it?

An experiment using V2 of the rotatehue script. Original image from here.
Thanks teapot.

Tas_mania that's awesome.

Woww Tas_mania, great idea and well done!

Here's version 3. Additions are:

An option to use hue chroma to change the hue which needs gegl_command.py from here:
viewtopic.php?f=9&t=18040&start=30p264354

Hue saturation works anyway so if you just want that option you can skip installing gegl_command.py.

A choice to have the layers output to a new image. If not chosen the layers are output to the original image as before.

Allows indexed as well as RGB image types.

Hi teapot,
If I may, perhaps you should put it in the thread's very first post (as well as V1 and V2), visitors might not go/read up to the 5th page and surely are not aware of the different versions.

Yes, V3 replaces V1 and V2. They all have the same name so maybe just replace the previous ones?

BTW thanks guys for appreciating my refracted light gif

Thank you PixLab and Tas_mania.

I've updated the first post with links to the versions so as to preserve the history and download numbers.