Action plan 2

[Sven Langkamp]

On Tue, May 18, 2010 at 10:46 AM, Cyrille Berger <cberger at cberger.net>wrote:

> On Tuesday 18 May 2010, Sven Langkamp wrote:
> > I think it makes no sense to not do it that way because Photoshop does
> it.
> > I think that the grayscale version has some advantages over the current
> > solution, e.g. gradients work better. Both version have their problem.
> I'm
> > open for suggestions, but I think there is no ideal solution.
> The biggest problem of the current approach is that it is not easy to draw
> transparency. But it is a general problem that we have with normal painting
> too.
>
> Take a "blank" artist that has not being distorted by photoshop use, and
> ask
> him what is opaque or what is transparent, black or white, white or black ?
> Which is my main issue with grayscale mask, it does not make any sense to
> use
> a color to map transparency.
>
> For the gradient, I can only suggest a convert to alpha option. Currently
> it
> should use the alpha part of a gradient (I wanted to test if that was
> working
> but for some reasons masks seems totally broken on my old trunk checkout).
>
>
Even the Krita behaviour isn't very logical. Why do I have to erase on the
transparency mask to hide some area?

Transparency is needed to indicate that a certain piece of the mask
shouldn't be affected. For example if you have a mask and I want the top
less selected, the middle unchanged and the bottom more select, then I could
control the changed area with the alpha channel while the other "color"
channel would control the direction (more or less selected) of the change.
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