I'm not affiliated with the project, but I've used openFrameworks (http://www.openframeworks.cc/ http://www.openframeworks.cc/) and really liked the library but

I'm not affiliated with the project, but I've used openFrameworks (http://www.openframeworks.cc/ http://www.openframeworks.cc/) and really liked the library but found the documentation is pretty lacking. It's basically just an API reference and a few small programming guides. Even as an experienced developer I still found myself stumbling over how basic things worked because the documentation didn't really give any guidance.