[Bollebib]

I was drawing in mypaint when I got to a certain "problem" which made me get an idea.

It's mainly theoretical and to spark a discussion on whether or not it is a good feature or not.


Alpha control mode.

When you  make a stroke most of the times it will be a line where there are different opacities present. soft at the edges , hard in the center.
When drawing you make different strokes,erase,stroke again erase...

you might have made very neat lineart. Only to discover that the opacity wasn't full,so when coloring underneath it you will see your colors through those lines.
This might not be very wanted behaviour. But all the right lines are drawn,everything is in the right place.
So would it be possible to make a pixel fully opaque or transparent with a Alpha control mode?

I imagine it would be like alpha lock mode but instead of affecting color it should affect the alpha:
->add alpha or remove alpha depending on the opacity setting in your brush
->adding alpha would add alpha incrementally without changing color too much(very important!) to the point of being fully opaque
->removing alpha would remove alpha incrementally without changing color as well to the point of being fully transparent,BUT (if possible?) with the effect being that it only LOOKS transparent,the actual line being still present and if you add  alpha again to regain the same line you had?



It's only wishful thinking and possibly impossible...but I'd like to discuss it nonetheless
maybe someone has some idea that IS more feasible and gets a similar result.

[savageorange]

IMO your particular problem would be best achieved by loading the layer into an editor like GIMP, and autolevelling or applying curves to the alpha.
That said, I certainly would have uses for an alpha editing mode myself.. mainly for fade or smoothing effects.

[Bollebib]

wel yes
Gimp is the obvious solution

But I am ideed looking for a bit more control ,manually.

You could produce very nice results with this in a very controlled manner (the lineart example was the clearest I could give)

[darkhog]

You know what I'm doing? I'm adding layer between drawing and actual background and paint white underneath drawing with brush with low feather, such as Set#2\deevad/fill. Thats solves problem, though actual alpha control would be IMO useful.

[Bollebib]

doesn't that only work if the background is white too?

[darkhog]

No

It does work wit any background, however you need to paint only things that you want opaque.