Re: [Openvrml-develop] Simple Object to Object Collision Detection

[Christopher K. S. J. <cs...@qu...>]

Patrick AS Sinclair wrote:
> 
> I'm using the libVRML97 in my work but I need very simple object to
> object collision detection. Basically, I want to check whether a point
> is inside certain objects in the scene, such as Anchor nodes. Is there
> an easy way to do this or do I have to calculate the bounding boxes
> etc. and check whether the point is inside them myself?
> 

 Check out VrmlNode::getBVolume(), and the comments in
VrmlBVolume.h (and friends). I'm switching jobs right now,
so I'm a little overloaded, but if you've got specific
questions, I can probably answer. Note that if you want
exact results, instead of just bvolumes, then you're on
your own, and possibly in for a lot of work. ray-based
picking and avatar/object collision are on the requirements
list, but aren't implemented yet. Can you
elaborate on your problem/requirements? (If I had to
guess, sounds like a 3d pointing device?)

-cks