Hi

I had a box and when another box falls into the box , how can i know the box hit the bottom of a body?

Regards

If you want to know the compound shape then maybe
http://away3d.com/forum/viewthread/4537/

I’ve now started out using Away3d, and now trying to learn all I can on collisions. I believe you might be able to create a custom made rigid body (i.e., in the shape of your box), using one of the AWP… classes, but I have not yet explored all of them, and I am still searching unsuccessfully for the APIs or any detailed information on these classes.
However, I made an example with a few collisions. Perhaps one might help you.