I have just discovered Processing software and I have been digging a bit into it. I was looking for a good and easy to use framework where I can work with 3d locomotion and crowd simulation.

I've seen the examples, and all they look (obviously, they are examples!) quite simple, but promising. I wonder if I could use Processing for the following topics:

 - Steering behaviors (like Craig Reynolds  http://www.red3d.com/cwr/steer/) for autonomous characters.

 - 3D biped animation, that can be controlled by code (I have seen no examples about this, that's why I ask).

 - Crowd management. To be more precise, what I need is to put in the scene lots of entities (like in the Birds example:  http://processing.org/learning/3d/birds.html), but with far more complex objects. 

I am pretty sure that all these things can be done with Processing, as well as with many frameworks. The point is that many 3D engines can have severe troubles when pushing them to the limit.

The question is if, using Processing and its libraries I can program all those topics above, maintaining a good performance. To put this in just one question: is it Processing light enough to guarantee (with good programming style, of course) a smooth execution that could require high computational costs?

Thank you all in advance for your feedback, it is really appreciated.

Bests,

Diego.