Re: [Flightgear-devel] October $250 Flight Gear Developers

[Tim M. <ti...@re...>]

On 10/06/2009 03:14 PM, Curtis Olson wrote:
> On Tue, Oct 6, 2009 at 7:57 AM, Tim Moore <ti...@re...
> <mailto:ti...@re...>> wrote:
> 
>     "3D panel" does not mean that you need a 3D view of the cockpit to
>     see the
>     instruments.
> 
> 
> I guess I've never seen an example of anyone configuring an orthographic
> view in FlightGear, but I'm sure it's doable.  Do we have configuration
> level support for this, or would it be a coding exercise?  The other
It's supported by the camera configuration code that also implements multiple
cameras. There is some additional coding to make this fully practical for 
cockpit panels: an orthographic view is still a view of the entire scene. You
can set the far clipping plane to avoid rendering the whole outside world, but
that is still forcing the OSG culling code to do a lot of work. If there is a
way to "tag" 3d geometry that is part of a panel, then it will be very easy
to render only that geometry in the view.
> part is that the designer would need to carefully align the panel
> surface orthogonal to the view direction to assure there is no warping
> of the panel relative to the view plane, again, should be a relatively
> simple task, but would need to be done and need to be thought about.  So
> it's definitely a solvable problem, but there are several extra steps,
> and I haven't seen an example to work from within FlightGear.  And
> generally, if it's never been done before, the first person blazing the
> path will typically run into some unexpected surprises.
True enough.

Tim
> 
> Regards,
> 
> Curt.
> -- 
> Curtis Olson: http://baron.flightgear.org/~curt/
> 
> 
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