Truth - the daughter of time. Engraved on the case. I wanted to simulate real movement. Somewhere in the network have found diagrams and descriptions of different arrangements, chose the easiest no second hand. Initially, (as is always the case) was planning to do once the animation mechanism to make a beautiful post processing, special effects, editing in aftereffekte and Lai Lai ... While doing landed:) However mechanism is quite real and amenable to animation and the script as written. Now the main thing to overcome laziness, gain commitment and take the next step. And yet that is just a pretty picture. Hope you like it too.