Here is an example that utilizes interactivity. Click and drag the watch to rotate it.
http://ryanfenik.com/demos/keyshot.html (http://ryanfenik.com/demos/keyshot.html)
It seems that posting swf files is disabled in this forum, that is why the link goes to an external url.
How did you get this inertia ???
I love this :) Great work !
There are many ways to do it. You can create a "friction" variable that multiplies with the old and new x and y values to give an "ease out" effect.
A much easier way of doing it is to use the Greensock TweenLite engine and apply the easeOut settings. The smoothing functions are already built-in, and you simply select which one you want.
That's really cool! Fun to mess with. specially after a few PBR's :)
The model has been updated to include full 360x180 degree rotation, an explanation behind the process, and a rendered movie clip.
http://ryanfenik.com/demos/keyshot.html
Without the interactivity the movie isn't very impressive, it is only to explain how the clips have to be rendered.