Scene-graph traversal utilities

[richardolsson]

Create utilities to simplify scene-graph traversal, e.g. by creating an iterator that handles the recursion behind the scenes, and some way of searching for objects by name.

[dungeoneerxx]

That'd be imo a most useful feature.

I'd suggest this be designed using the visitor pattern, that makes it most easy to get a decent core functionality as an early milestone

• e.g. a specialized apply-methods for DefaultMaterialBase first just to dump and set basics like colors, alpha etc. - and more detailed methods for its specializations to be added later when the core functionality is already well tested.

Btw - at away3D team: 4.1 Alpha is an impressive piece of software!

I like it a lot with some bg in OpenGL and OSG programming one can often correctly guess where which functionality or interface is located and what it is called - highly intuitive.