David Megginson writes:
> Jim Wilson writes:
>
> > Well I've setup a bare bones class for FGScene and have been
> > browsing through main.cxx. I'm not quite sure what you mean by
> > "all of the scene- and scenery-management code".
>
> I mean the initialization, setup (clip planes, etc.), and drawing of
> the main scene graph. It might not hurt to move more into there
> (i.e. lighting and sky), but one step at a time might not be a bad
> idea.
>
> My ultimate goal is for fgMainLoop to look something like this:
>
> void
> fgMainLoop ()
> {
> long dt = globals->getElapsedTimeSomeHow();
> for (int i = 0; i < globals->getSubsystemCount(); i++)
> globals->getSubsystem(i)->update(dt);
> }
>
> The main.cxx file should be only a couple of hundred lines long at
> most, and should give a good overview of the top-level control flow of
> the program. Next, most modules should be moved out of src/Main,
> leaving only truly main ones like options.[ch]xx, globals.[ch]xx, and
> fgfs.[ch]xx.
My one *big* caution on this is to *think* about and pay *attention*
to opengl state management issues. If you don't have a good handle on
the subtleties involved, you could make a real mess of things or
introduce subtle rendering bugs.
Regards,
Curt.
--
Curtis Olson IVLab / HumanFIRST Program FlightGear Project
Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED]
Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org
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