> > > 1. they make the airports easier to spot from a distance, and

Yeah, but unless we put buildings everywhere, the airports will be too
easy to find.  It is already easier to spot airports on the simulator
than they are in real life; let's not make it too trivial.

> > > 2. they give the user a visual cue for distance and altitude during an
> > >    approach.

Maybe; not for me.  I was taught to use perspective off the runway itself
and ignore the terrain underneath/around (other than for clearance of course).

> to add to that thought, it is the relative angular motion of near and
> distance objects that a pilot learns to recognize during an approach/landing

Yes, compressing the view into a flat perspective on the monitor makes the
whole estimation thing a lot easier on the simulator than in real life,
where some people can spend hours of training learning to 'see' perspective.
It's a shame we have to disable antialias for rendering performance.


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