To come back to the reason I'm writing these notes today, I have to say that as a learning animator, I think that I understand now the true importance of using arcs in your animation. I've been reading it for a while, but I just thought that having my animated arms and legs doing arcs like movements would be enough to get a descent animation..... and of course I couldn t be more wrong!! Unless you want to animate a mechanical gadget EVERYTHING in your animation which is moving should describe arc like trajectories if you want to get a natural and organic feel. That was my advice of the day, here is a quick link talking about those animation principles that are really important for every animator
