I use the "gamut mask" technique when planning colours for my paintings. It was popularized by the traditional painter James Gurney, and is a very effective way of creating and working with a restricted palette.

Theory and method from the dude himself:
http://gurneyjourney.blogspot.ca/2008/0 ... art-1.html
http://gurneyjourney.blogspot.ca/2008/0 ... hemes.html
http://gurneyjourney.blogspot.ca/2008/0 ... lette.html

http://gurneyjourney.blogspot.com/2011/ ... ethod.html
http://gurneyjourney.blogspot.com/2011/ ... ethod.html
http://gurneyjourney.blogspot.com/2011/ ... ethod.html

http://gurneyjourney.blogspot.ca/2011/0 ... ow-up.html

Online gamut mask tool: http://www.livepaintinglessons.com/gamutmask.php

Gamut masking app (windows only, works with wine though): http://gurneyjourney.blogspot.ca/2013/0 ... ndows.html

The only paint software I know of with an integrated gamut mask tool is myPaint, which added it in version 1.1. myPaint implements it simply but effectively, and includes some templates to get started with, too.

Post from Deevad with an overview of myPaint's gamut mask feature:
http://www.davidrevoy.com/article154/my ... w-features

Currently, I experiment with a gamut mask outside of Krita by exporting as ORA and bringing it in to myPaint. An alternate method would be creating a PNG of the gamut mask and docking it, but that's pretty static. Having an integrated, interactive gamut mask docker would streamline my workflow a great deal.

Hm... I guess the artistic color selector docker started out as the beginning for a gamut mask tool. It'll need work though. Could you check the artistic color selector and then add a wish item to bugs.kde.org detailing what needs to be added? Thanks!

Sorry for the delay on my reply - I got busy with moving house/unpacking and this post completely slipped my mind, ha.

boudewijn wrote:Hm... I guess the artistic color selector docker started out as the beginning for a gamut mask tool. It'll need work though. Could you check the artistic color selector and then add a wish item to bugs.kde.org detailing what needs to be added? Thanks!

Yeah, the artistic color selector alone is at least 50% of the way to a gamut mask tool. I'll play with it a bit and hash out a post for the kde bugtracker over the next couple of days.

This is a very interesting idea!
Krita has by far the best and richest color picking methods I have seen in any painting/image software.

I have attempted several times to work with the art color selector, but I find myself returning to the advanced after a while.
A gamut masking method, which in reality just hides part of the color wheel, would make this palette more substancial.

In an ideal world, I imagine the art color selector including an area for mixing colors. This is a feature that already exists, in the brush testing area of the brush creator.

Sorry for resurrecting this old thread, but I think this feature is important.
This gamut masking tool is definitely one of the most useful features for a serious digital (and of course, traditional) painter. MyPaint team made it available in their program. It's super easy to use. So perhaps you Krita devs can check out MyPaint code and create something similar - maybe it can work with artistic color selector.

We are aware of the gamut mask in mypaint.

It's definitely on my 'stuff that is usefull and simple enough for me to implement'-list, similarly, I also implemented HSY' based on mypaint's docker.

However, that list is pretty long, so it'll take a while till it gets a turn.

I have an example of how to do it manually over in this tutorial: http://theratutorial.tumblr.com/post/68 ... -colourful

Any news on this feature? This would really help me out as today the only reason I keep going back to mypaint is to build palletes with the gamut mask! But that kind of gives a bump to my workflow.

I never started work on it because I am a volunteer(and a university student at that) and that mentioned list is genuinely pretty long?

I have been mostly busy trying to fix up color management feedback for profiles as that seems to confuse people most, adding more assistants, working on the resource manager, adding new filters, and will most likely be focussing on assigning color profiles, as well as introducing better mixing methods for the color smudge brush.

Wow , thanks for the fast reply! I know how this "to do"s list can get pretty big, specially with more urgent work always showing! Anyway, was just wondering about this since I saw the reply was back from 2014!

I've also took on boudjewijn's suggestion to try to understand again how the artistic color selector works, for the nth time really, but today it started to click a bit!

Anyway, thanks a lot for your support on Krita! I wish I knew programming to try to help on "smaller" things like this, but my knowledge is limited to some basic javascript/php, and I glanced at the source for the artistic color selector and was sincerely baffled.

Alrigth, so I kept thinking about a solution yesterday, and I came up with one really stupid and simple, and that I should have though up a long time ago, though not really elegant.

I kept thinking that if I could just draw shapes over the color wheel that would be enough, so I started searching how could I draw over my "desktop" and found this post:
http://askubuntu.com/questions/328543/d ... he-desktop

In there they explain plenty of options that enable you to draw over your screen! I use ubuntu-gnome, so the option that worked for me was the last one, installing "gromit-mpx" and using it to draw over Krita's advanced color selector, using the color wheel option that resembled mypaint the most! Though you can use this same solution over the "Artistic color selector" as well!

Here is a screenshot to show it:


As you can see on the screenshot, I also created a palete with the colors on the corners of my "gamut mask" so I can draw it again when I resume working on it later!

here is the manual for gromit in case anyone is interested in using it too!
http://manpages.ubuntu.com/manpages/trusty/man1/gromit-mpx.1.html

That is a neat idea with adding what MyPaint calls a gamut mask. I know I read a James Gurney book a while ago and he spent a great deal of time discussing these limited palettes. I imagine this would be a pretty large coding task as it would be best to affect all color selection that happens, not just one color docker like the advanced color selector. We would need more planning on how we would do it from the user interface.

This seems like something could potentially be a kickstarter stretch goal. Almost everyone that helps with this project is a volunteer that doesn't get paid, so it can be hard to make everyone happy with large amount of requests that come in. Every volunteer also has their own interests too(mine is website and UI). Hopefully if this project continues to grow, there will be more developers that can potentially work on neat features like this.

You can always make a wish bug for it on the bug tracker. That is where feature requests are usually stored.