I already wrote an article on an animation patch for Mypaint by Charbel Jacquin, and a very short try by mouse, there is now a specific branch with a new functionality (background layers/cellulos layers), that will be merged back in trunk as soon as everything is hidden in preferences, and I’ve no a new Wacom graphic tablet to play with it.
Demo of new functionality(Youtube) local copy:
The new branch can be seen and get from this address, installed and launched as follow. Warning, if you have already installed debian package, you have to remove it, and install last version beside this one (following the same process) in /opt/mypaint-xxx, else you will not be able to save picture/animation because of /usr/lib priority.
Debian based only (Debian, Ubuntu…):
sudo apt-get install g++ python-dev libglib2.0-dev python-numpy swig scons gettext python-protobuf protobuf-compiler
git clone git://gitorious.org/~charbelinho/mypaint/charbelinho-mypaint.git
sudo scons install prefix=/opt/charbelinho-mypaint