Well, I'm having a primary light-source, and I want all the objects that fly through not only to block the light, but also to have their shadow-path visible behind the objects that stretches out behind them.
I use steamer for such an effect, also to increase the volumetric light to create "beams" of shine-through light.
A preview can be seen on:
(had to downgrade quality, and it's in dutch, but essentially it's what I'm trying to animate: the shadows behind the objects and the light that shines through).
