Can we check the bounding sphere of the model and, if the viewpoint is outside it, use the nearest point of the sphere as a candidate for the clip plane ? Doesn't help for pilot viewpoint, but should for trailing.
> David Megginson <[EMAIL PROTECTED]> said: > > > Curtis L. Olson writes: > > > > > Could the interior be marked as a separate branch of the scene graph > > > and then somehow skipped when viewed from an external view? > > > > We wouldn't want to do that in general -- it would be OK for the 3D > > instruments and controls, but if we killed the cockpit interior walls, > > you'd see nothing but sky through the plane windows (i.e. the other > > side would look like it was missing). That's not a problem if you're > > far enough away, of course. > > > The real problem is that the current CVS is using a different clip > > plane for the 3D model even in external view. Jim's patch is supposed > > to fix that, but I haven't had a chance to test it yet. > > Actually I'm still seeing some pretty bad problems even with that patch. The > patch just puts it back to the functionality we had before which seemed a > little better. Something is still missing though (from before moving the > model rendering stuff). As Erik noted there's some really weird alpha channel > stuff happening to the model. > > What I mentioned before was something "academic" (ie maybe read about it in > the opengl book?). Basically opengl offers a method that uses vertex order to > select out inner facing polygons and yes you'd see clear sky, but it would > only be applied at a certain distance so that wouldn't be much of a problem. > I'm guessing that the same thing could be accomplished with the scenegraph > method if the interior walls, floor and ceiling were seperate polys and the > outside shell was singlesided. All we would need is to have a distance from > eyepoint to origin to decide whether to include the branch. > > Best, > > Jim > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel > > _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
