RE: [Flightgear-devel] minimal instrument panel

[Curtis L. O. <cu...@fl...>]

David Megginson writes:
> Norman Vine writes:
> 
>  > The only other 'natural' way I can think of to not have the Panel
>  > block most of the scenery with out a major rewrite of the FGFS SSG 
>  > display pipeline is introduce a 'minor' deflection downwards into the
>  > view vector when the Panel is displayed.  
>  > 
>  > This, IMHO, would be perceived as natural in that when looking at the 
>  > Panel in real life your look vector is probably slightly downwards.
> 
> Perhaps the deflection angle is what we should make adjustable.

I used to understand this code since I originally wrote it, but it's
been optimized quite a bit based on certain assumptions so I'm not
sure how easy it would be to defelect the view forward direction down
by some value.

Conceptually, you would take the view_forward vector and rotate about
the pitch axis.

It would be nice to have a less brittle view frustum setup
approach... (realizing that I'm mostly complaining about my own code.)

Curt.
-- 
Curtis Olson   Human Factors Research Lab       FlightGear Project
Twin Cities    cu...@hf...                cu...@fl...
Minnesota      http://www.menet.umn.edu/~curt   http://www.flightgear.org