Set AJAX options: 5s timeout, no caching.
Don't spool up a second request while the previous one is in progress.
If we repeatedly see the same receiver timestamp, warn the user that the JSON isn't being updated.
Rearrange internal storage of positions.
Maintain sitedist within PlaneObject, not externally.
Clean up speed/dist/etc formatting.
Show both metric & imperial values in the plane detail infobox.
Rejuggle how markers are handled so that we avoid creating lots of new icons all the time.
Rearrange reaping / update times so that it is all based on timestamps from the receiver.
to working directly with the DOM to update the table / selected plane info.
Seems to speed things up (and deflicker them) a lot.
Also stable sorts, allow disabling the clocks, draw ground tracks in a different
color, put "last seen" info on the selected plane infobox, if position updates
are infrequent then combine them into a single estimated line so that dash
placement works properly, probably a bunch of other things..
In the table view of aircraft, the heading was displayed as "330 (NW)"
or similar. However, this cause the entry to scroll over into two lines
of text, and reduces the number of planes that can be seen in the table
at any one time.
There probably should be a way to make the table view wider by scrolling
it, but I can't see any way to do that. So for the moment I've commented
out the extra (NW) bit.
*DISCLAIMER*
I didn't write any of this code initially, I've never tried to use it,
and I don't understand Java Script at all. In-fact I hate the wretched
stuff.
Anyway, it appears that no-one has bothered to test any of the Web
interface code using Microsoft Internet Explorer 8 or 9. I've attempted
to hack out the sections of the code that are causing problems, and at
least the web interface now seems to run.
However, for some reason the planes never move - I know this must be a
bug, but I don't know how to fix it.
Most of the errors relate to trailing commas. My guess it that some
Java engines don't mind trailing commas, but that the Microsoft ones do.
There are also some undefined modules (untrackedDeveloperSettings) and
functions (console.log) which I guess those who wrote the code have on
their machines, but forgot to include in the public distribution. I've
no idea how to fix this, so I've just hacked them out of the code.
