the next airport or airport with METAR station, but about any type of
airport
- as a side effect this change makes it also 30 to 50% faster :-)
In the long run this linear search shall be replaced with a spatial
algorithm (like octree), which will be a much bigger performance gain.
- preserve information from apt.dat about whether an airport is a "normal"
airport, a seaport, or a heliport. Do it without wasting another byte
in the FGAirport structure (saves 50kB of memory). Yes, I know bitfields. :-)
Fixed bug due to longstanding inconsistency in FGAirport
getter functions return types.
Durk Talsma: Fixed traffic record initialization bug that occured
when taxiing traffic was waiting for traffic on runway
maintain a resonable distance from each other while taxiing on the same
route. The current code does not yet take crossing routes or aircraft
taxiing into opposite directions into account.
* Use "const string&" rather than "string" in function calls when appropriate.
* Use "const Point3D&" instead of "Pint3D" in function calls when appropriate.
* Improved course calculation in calc_gc_course_dist()
* Safer thread handling code.
Vassilii Khachaturov:
Dont use "const Point3D&" for return types unless you're absolutely sure.
Erik Hofman:
* Use SGD_(2)PI(_[24]) as defined in simgear/constants.h rather than
calculating it by hand every time.
Auf Niederlandisch:
Bij deze de patch voor de taxiway code. Deze code is nog gebaseerd
op de bestaaande architectuur, gebaseerd op de FGAirport class in simple.[ch]xx
Ik heb me voornamelijk gericht op nieuwe functionaliteit; de volgende
submissie zal waarschijnlijk bestaan uit opschoning, opsplitsing en een
implementatie van de nieuwe airport architectuur, zoals voorgesteld door
David Luff.
En Anglais:
Here is the patch for the taxiway code. This code is still based on the
exsisting architecture, which is based on the FGAirport class in simple.[ch]xx
I've aimed mostly at new functionality; The next batch will probably contain
code cleanups, splitups and the implementation fo the new airport architecture,
as proposed by David Luff.
Attached is a patch to the airport data storage that I would like committed
after review if acceptable. Currently the storage of airports mapped by ID
is by locally created objects - about 12 Meg or so created on the stack if
I am not mistaken. I've changed this to creating the airports on the heap,
and storing pointers to them - see FGAirportList.add(...) in
src/Airports/simple.cxx. I believe that this is probably better practice,
and it's certainly cured some strange problems I was seeing when accessing
the airport data with some gps unit code. Changes resulting from this have
cascaded through a few files which access the data - 11 files are modified
in all. Melchior and Durk - you might want to test this and shout if there
are problems since the metar and traffic code are probably the biggest
users of the airport data. I've also added a fuzzy search function that
returns the next matching airport code in ASCII sequence in order to
support gps units that have autocompletion of partially entered codes.
More generally, the simple airport class seems to have grown a lot with the
fairly recent addition of the parking, runway preference and schedule time
code. It is no longer just an encapsulation of the global airport data
file, and has grown to 552 bytes in size when unpopulated (about 1/2 a K!).
My personal opinion is that we should look to just store the basic data in
apt.dat for all global airports in a simple airport class, plus globally
needed data (metar available?), and then have the traffic, AI and ATC
subsystems create more advanced airports for themselves as needed in the
area of interest. Once a significant number of airports worldwide have
ground networks and parking defined, it will be impractical and unnecessary
to store them all in memory. That's just a thought for the future though.
I just heard from John Wojnaroski that you and he are going to work on getting
a flightgear demo machine up for the linux expo thursday and Friday. John
indicated that he would very much like to get a CVS version with the new
traffic code up and running before the expo.
Here's again one of the more obscure bugs that valgrind complains about: somehow
the STL container classes manage to read out values before they were ever set.
This patch fixes that. This may not cause any harm in this case, but valgrind
seems to *always* be right about them.
a single apt.dat.gz file which is in the native X-Plane format.
To do this I wrote a front end loader than builds the airport and runway
list. Some of the changes I needed to make had a cascading effect, so there
are minor naming changes scattered throughout the code.
A good elevation is critical for proper glide slope modeling. This patch
assigns the average field elevation to any ILS component that doesn't have
a valid elevation.
Also, for an ILS approach, use the GS transmitter elevation for glide slope
calculations rather than the localizer elevation, in some cases this can
make a big difference.
are many recognized limitations and inefficiencies with this entire approach,
however, it's a quick and dirty way to get something working, where before
we didn't.
The last change from Curt to Airports/simple.[ch]xx made
GUI/AirportList.cxx not compilable because of the loss of
a '*' in getAirport.
Also : fabs is not defined under MSVC unless <math.h> is
included.
