Initial project for GSoC

[Emanuele Tamponi]

Hello people,
I'll try to explain what I want to do to achieve my soc project.
It's not a pondered decision, it's just what I'm thinking about after 
reading some papers.

My question, through all the post, is: "Is Krita design compatible with 
this?"

I'll try to implement the Van Laerohen model: it's a 3-layer canvas 
structure that updates every dt seconds.
Every update will apply the changes to the layers, and render the canvas 
contents to the screen.

This can be achieved with Overlays (right?).

This implementation is what I called "Physics filter for drying and 
running paint".

The paintop thingie is a bit more challenging.
The paintop has to be able to get the input from tablet, read the status 
of the canvas, and communicate
the result of his computation to the canvas (with "canvas" I'm referring 
to the van laerohen's model).

The model assures that the paintop code will not interfere with the 
overlay behavior since it's just about
"setting" the initial conditions to the canvas.

The color mixer is just a "painterly tool". Do we want to be able to use 
it only with the painterly paintop,
or we want a less "painterly" behavior? In my opinion, the better thing 
is giving to the user an interface exactly like
the "palette" of an artist. So the color mixer would be strictly related 
to the paintop, and will use something
like the 3-layer structure of the overlay.

But, well, the color mixer needs to be reviewed, I'm not too convinced 
about it.

Thank you in advance,
Emanuele