Re: obj graphics fly-thru help

[Rick Towler <rtowler(at)u.washington.edu>]

And yes, I have looked at the IDL demo program flythru.pro.  This
interface isn't close to what I would call a flythru.  Try it and you'll
see what I mean.

I am starting to think that the problem is more complex than I first
thought.

Does anybody know if this is even possible in IDL?

-RHT


Rick Towler wrote:
> 
> This is a second cry for help.
> 
> I am trying to develop a set of algorithms that will allow me to
> "fly/walk thru" a 3d scene.  Via keyboard events I translate the op
> model in the XZ plane (forward/back and slide left/right).  This is easy
> enough.
> 
> What I would like to do is us the mouse to adjust pitch and yaw of the
> viewer (look up/down and left/right).  So far my attempts have been less
> than perfect.  As I understand it, the solution is to change the point
> of rotation of the Top Model from 0,0,0 to the "eye" of the viewer.
> Basic trig.  But this isn't yielding the expected results.  My guess is
> that I am not understanding the entire problem.
> 
> Has anybody done anything like this?  Do you have any tips?
> 
> Thanks.
> 
> -Rick Towler