raycasting help

[heaversm]

Hi - it's not an issue per se - but I was hoping you might help me modify your ray casting example to my particular scenario - I'm moving a camera through a scene that contains an obj I've loaded as a mesh, and I want to detect if the camera has collided with any of the walls of my obj.

I've based my code off this threejs example: http://threejs.org/examples/misc_controls_pointerlock.html, and tried to apply your example here: http://stemkoski.github.io/Three.js/Collision-Detection.html - but I can't seem to get a collision.

My example is here

and the relevant javascript is here:

If you could shed any light on how to detect collisions with the camera, that'd be great. Thanks so much for making so many examples and sharing them online.