Griatch-art's avatar
Thanks for the fave!

You cannot do individual bristle shrinking with this brush, no. GIMP doesn't work that way. To create that effect in GIMP, one would need to manually animate the individual bristles along the pressure axes. Which would be cool, but not really something suitable for a GIMP animated brush but rather something fitting a full procedural brush engine. A MyPaint brush might be able to mimic the effect, but I don't recall seeing this exact behaviour in the default set. If you really want to see this behaviour, you should take a chat with Carmen Miranda (TheShock here on DA) or David Revoy (deevad), they have each contributed full MyPaint brush sets and should be able to tell you what's possible or maybe even help you create the described brush.
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Griatch
JacktheR's avatar
Well, to be honest I'm far from sold on MyPaint. No color adjust tools? Limited layer support? Does it have transform tools? Layer blending modes? Will MyPaint even install on my older version of Ubuntu (8.04)?
Griatch-art's avatar
No, MyPaint has no adjustment tools at all. It's a painting application and is intended as a compliment to GIMP. These days I use it almost exclusively for line and brush work, before moving the image into GIMP for final composition and adjustments (see the latest few of my tutorials if you are interested in the process).

I don't see why it would not install on an older Ubuntu. Just pull the latest GIT repository and compile it, that's by far the best way to run it anyway (it's very stable also in the development version).
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Griatch
JacktheR's avatar
I think the problem is that a lot of the stuff on the 8.04 repository is an older version than what is needed. I tried building Git - it fails on curl-config, even after installing curl.

I tried building MyPaint from source, it fails here -

"cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++"

I'd like to test MyPaint and see if its brush engine is useful for inking a drawing constructed in GIMP.

Does MyPaint save layers that GIMP can open?
Griatch-art's avatar
That's not a compile error, that's just a warning and should not stop the compilation. MyPaint is really a very well-contained package, without much hassle. Make sure you apt-get all requirements mentioned in the INSTALL file (usually this means getting -dev versions, I think you also need python2.x-dev package) before running scons.

MyPaint saves files in OpenRaster format, the next open-source image format. GIMP does not support this out of the box, but there is a neat plugin (created by the MyPaint team) that allows you to import openraster in GIMP. Then you get layer support. Without it you have to export to GIMP as PNG.

I sketch, ink and paint in MyPaint all the time before moving to GIMP for tuning, so for me it works very well - but it's of course always a matter of taste.
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Griatch
JacktheR's avatar
What version of python are you using?
Griatch-art's avatar
Currently I run 2.6, but 2.5 (and 2.7) should work too.
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Griatch
JacktheR's avatar
Eh, well after spending a day chasing down dependencies, I'm licked. MyPaint will have to wait until I have a newer setup and can pull it off the repository. Thanks for your help.