Assimp / ofxAssimp coded animation

Hi, my goal is to import a rigged mesh and to be able to change its pose with code, I mean not with a pre-recorded animation. Something like what Kyle did :

Can you explain me how to do it please? I’ve got no more hairs on my head.

I already tried Roy’s examples but I get errors.
I tried to use Assimp but… errors too.

Thank you very much!

(OSX 10.9 Xcode 5.0.2)

Ok, i’ve found how to do it.

-including ofxAssimpModelLoader
-getting its aiScene
-searching for the good one (deformation_rig for astroboy_walk.dae)
-learning Quaternions.

Is it the easiest way to do the job?