Trying to illustrate movement of small particles through a duct with a 90-degree elbow. Need for the flow to look continuous and like it's staying within the bounds of the duct (a 2D drawing). I'm struggling with whether a particle emitter or a replicator is the way to handle this.
I can get a point emitter to follow a motion path, but that's not the right look. I can keep an emitter stationary, but the particles won't follow the path I need, and I have to mask off the duct. It all looks clunky right now.
Maybe a replicator is better? I've seen how replicators can follow a path, which is cool. I'm not yet sure how it might seem that my small objects "flow" along this path.
I think a repliactor would be the easy way to go. You can set up a "puff" of particles (small dots, not Motion particles) and replicate those. You can then draw a path along the duct to act as the path for the replicator. Then it's just a matter of animating the replicator offset. Here's a quick example: http://homepage.mac.com/specialcase/movies/duct.mov