Are there plug-ins that support 3D within After Effects?
Yes. In fact, this is one of the fastest growing types of plug-ins. Boris FX, Inc. Continuum Complete includes 3D DVE with video cubes, spheres, and other 3D shapes. Conoa 3D allows you to make 3D shapes such as spheres, cones and cubes, full with texture maps. Cycore FX and Cycore FX HD is a broad spectrum plug-in package that has plug-ins that interact with AE’s built in camera, and others that simply create elements in 3D, such as hair, page turn, Mr. Mercury, Plastic, Rain, Snow and many others. Boris FX, Inc. Final Effects Complete features some basic 3D transformations and true 3D particle systems. Forge FreeForm AE allows the lighting and manipulation of an articulate 3D plane in a real 3D environment, texture mapped with the contents of a layer. Finally, Zaxwerks 3D Invigorator Pro is practically a complete 3D program in a plug-in. It does modeling, animation, and rendering together.