Re: [Gimp-developer] [Demo] Porting MyPaint brush engines to the GIMP.

2012/4/30 Alexandre Prokoudine <alexandre prokoudine gmail com>:
> On Mon, Apr 30, 2012 at 1:13 PM, gfxuser wrote:
>> What makes these brushes different to the GIMP brushes with 2.8 dynamic
>> options?
> It's more options that makes it :)
> Install MyPaint and have a look at the advanced options dialog. You'll see it.

MyPaint brush engine has three four advantages:

1. Its back-end has simple "replace-alpha" operations. Current
paint-brush has no such operations. (Only some tools like smudge tools
has such operations.)

2. It has 9 inputs, 42 setting parameters, and 30 internal states to
determine the timing, position, size, color, and blend mode. while the
dynamics has 7 inputs, 11 setting parameters, and no internal states.
MyPaint brush engine can produce more various output.

3. All parameters are defined as brush parameters, while in gimp,
those parameters are not managed in one object,  brush dynamics and
tool options manages some of those parameters.

4. Its implementation is very simple and well designed. This is the
most important things for developers!

And It has some disadvantages:

1. Currently its core supports ellipse dab mask only. (That means no
pixmap brushes.)

2. It only supports "incremental" painting mode.

3. It lacks paint mode at all. (But who uses the painting mode of the
paint brush?)

Finally, both MyPaint and the GIMP lacks:

1. Texture features, which is very common for other painting softwares.

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