PhysX-like Trigger class

dumb question, but I couldn't be sure from the topics I read. Is there a class in OgreNewt that's compatible with PhysX (NovodeX)'s Trigger class? I mean, just an area that has a callback when an object enters it and another when an object leaves it?

it's not quite that simple, but you can use the ContactCallback system to do something very similar.

assume the 2 are not colliding every frame, and then if they do, set a flag inside the contactcallback. after calling update() on the World, you can check the flag for changes to see if something has entered or exited the area.