James Turner [Thu, 17 Oct 2013 19:13:36 +0000 (20:13 +0100)]
Avoid a divide-by-zero on malformed BTG files.
Encountered while testing v850 airports; some airports
generate materials with no tris, and hence no indices.
This causes a divide-by-zero when computing the index stride.
Detect this, and convert the BTG reader to throw exceptions
in error conditions, and to catch this and report the
appropriate result code.
James Turner [Thu, 3 Oct 2013 20:42:18 +0000 (21:42 +0100)]
Initial work on syncing non-scenery data.
This is some initial pieces to synchronise other pieces of base
data than scenery via the sync mechanism. An additional sync slot is
added to avoid scenery or other data blocking each other.
Thomas Geymayer [Tue, 15 Oct 2013 10:05:09 +0000 (12:05 +0200)]
Nasal: recursive method calling.
New functions naCallMethodCtx and naCallMethod to replace
NasalSystem::callMethod from FlightGear. This has just added an
unneeded level of indirection and fits better directly into Nasal.
naSetErrorHandler can be used to register an error handler/logging
function.
Thomas Geymayer [Mon, 14 Oct 2013 22:19:32 +0000 (00:19 +0200)]
Nasal: add naGCSave/naGCRelease for preventing objects being garbage collected.
These new functions are meant to replace the gcSave/gcRelease
methods of the NasalSystem class in FlightGear, as passing an
adapter to SimGear from FlightGear is quite a lot of useless work
just for being able to save objects.
James Turner [Sat, 5 Oct 2013 22:26:35 +0000 (23:26 +0100)]
Refactor HTTP content-encoding support.
Move content-encoding handler into its own file, which
simplifies the main code. As part of this, fix a bug where we
didn't flush the ZLIB buffers on response completion.
James Turner [Thu, 3 Oct 2013 16:40:17 +0000 (17:40 +0100)]
Extend built-in Nasal math.
- rename mod() to fmod() to prevent collisions with the
version in math.nas (which has different handling of negatives)
- implement pow, tan, acos and asin natively
- add round(x, [p]), which rounds away from 0.0, and takes an
option precision. I.e you can round(479, 50) and get '500'; useful
in many digital cockpit displays.
James Turner [Mon, 30 Sep 2013 11:11:29 +0000 (12:11 +0100)]
Expose active tiles via API, sync by SGBucket.
Provide an API to query which tiles are currently being synced. This
allows the higher levels (TileManager in FlightGear) to safely wait on
TerraSync before loading tiles.
Doing this exposed some bugs in scheduling tiles to sync by integer
lat/lon, related to round-towards-zero with -ve values (western /
souther hemispheres). To resolve these, and also reduce spurious
syncs, switch to an explicit API for requesting tiles by SGBucket.
This keeps TerraSync fully aligned with the TileManager queue, which
has many benefits for both high and low visibility situations.
James Turner [Sat, 28 Sep 2013 13:03:39 +0000 (14:03 +0100)]
HTTP: adjust request-connection assignment.
Prefer existing, idle connections to creating new connections,
even when below the max-connection limit. Gives much better re-use
and pipeline-ing, and hence reduced setup time/trips.
James Turner [Fri, 27 Sep 2013 19:28:43 +0000 (20:28 +0100)]
Reposition hook for terrasync.
When re-init-ing the sim, tell TerraSync what's going on (we don't want
to actually reset it, since that would disturb in-flight downloads).
Add an explicit method so it can reset its last lon/lat, and hence do
the initial sync at the new location correctly.
James Turner [Thu, 26 Sep 2013 11:11:48 +0000 (12:11 +0100)]
Allow TerraSync to be inited early.
Add explicit subsystem state tracking so we can safely init()
terrasync very early during startup, and hence overlap lengthy operations
(Shared Models sync and initial NavCache build)
James Turner [Wed, 25 Sep 2013 15:31:10 +0000 (16:31 +0100)]
Parallel sync of items.
When using built-in sync code, separate items into distinct slots.
Slots process items sequentially, but each slot works in parallel (using
a single shared HTTP engine). This allows tiles to be synced in parallel
with airports/shared models data, greatly increasing responsiveness
to get tiles synced on initial launch.
James Turner [Mon, 23 Sep 2013 17:20:16 +0000 (18:20 +0100)]
Rename WaitingTile to WaitingSyncItem.
We already synchronise other things besides tiles, and will soon want different
behaviour based on the type of item we're syncing (so we can synchronize some items in parallel). Rename the struct to be clearer, and add an enum encoding the type of item for future use.
James Turner [Thu, 19 Sep 2013 21:07:41 +0000 (22:07 +0100)]
Attempting to fix import/export linkage on Windows.
Hopefully this tells the Expat headers not to do any clever
declspec(import) or export stuff, which we don't want since we only
use the symbols within SimGearCore, and don't export them.
James Turner [Thu, 19 Sep 2013 20:42:28 +0000 (21:42 +0100)]
Intermediate static libs have issues.
Switch back to including the bundled expat sources directly in the
targets, since transitive linking of static libs is very awkward.
Makes static build happy again (let's see what else breaks)
James Turner [Thu, 19 Sep 2013 19:12:32 +0000 (20:12 +0100)]
Move bundled Expat to new home.
Renamed bundled Expat headers to avoid any
possibility of accidental including system headers when
using bundled Expat, or vice-versa. Should help with SVN
crashes reported by Thomas.
James Turner [Mon, 24 Jun 2013 06:46:27 +0000 (07:46 +0100)]
Persistent SVN update cache.
Make the already present cache of updated URLs persistent, with a
definable lifetime, currently 24 hours. This ensures terrasync-ed
resources are checked less often (max once per day) instead of each
FGFS launch, which should greatly cut down requests to the backend.
James Turner [Tue, 25 Jun 2013 06:55:20 +0000 (07:55 +0100)]
HTTP Client improvements
- max connections limit, and parallel connections to a single host where possible.
(Will permit updating terrain and Models / Airports / data in parallel)
- add LGPL headers
- give HTTP::Client a private impl class, to keep header simple.
James Turner [Wed, 4 Sep 2013 07:32:05 +0000 (08:32 +0100)]
Ensure sglog() singleton is threadsafe.
Slightly simplistic, but definitiely correct, method
for ensuring singleton creation is threadsafe. Can
be optimised if lock contention is ever an issue.
Thomas Geymayer [Sat, 20 Jul 2013 13:45:02 +0000 (15:45 +0200)]
Canvas: Ensure all element types are initialized before first usage.
If setting properties on a group a check is performed if
this property exists on any possible child element, and
only if this is the case the property is stored in the
groups style.
Previously elements have been only initialized during
their first usage, leading to ignored styles if they
have been set on a parent element before instantiating
an instance of the actual element type.