put all leaf is a seperated branch so that it is
possible to use a pretrav callback to cull out
terrain without culling out light or dynamic
objects. It appears that plib is not calling the
pretrav callback for leaves.
add an optional parameter that would be called to
build the aircraft panel, so that flightgear's
model_panel no longer duplicate code.
add a pretrav callback to models so that we can
filter out models when calling ssgCullAndDraw on
the global scene.
sgSetModelFilter( true ) means that we want to draw
the models. Use false to cull them out.
popped off the stack in a situation where it could be garbage
collected. I believe this is the source of the spurious "non-object
have no members" bug that has been reported.
The message 'Alert: catching up on tile delete queue'
comes from the fact that 48 tiles are scheduled and
added to the cache at startup before the plane location
is initialized. My proposed patch is to initialize
SGLocation with an invalid position and detect this
fact before scheduling tiles. I prefer to do that
rather than testing for lon and lat being 0,0 because
it is a valid position and someone could want to fly
near Accra.
This patch is for windows only. It hides the console window
until there is a message to print. It only support SG_LOG,
that I think is the right way to display something in FG.
points are too close together, this routine can return a course of "nan"
but the distance is valid. Someday someone who understands the math should
rewrite the gc_calc_course_dist() routine so it is more robust, but for now
it's easiest to simply check for a nan result and code around the limitation.
Here are some updates for the metar class:
- support for empty visibility group
- support for 4-alnum IACO ids (rather than only 4-alpha)
- better diagnosis in exception messages
- check for 404 http response
- replace last constant by constants.h definition
uninitialized by naNum(). If it happened to be constructing it on the
stack in a location previously occupied by a real reference, it would
generate a corrupt naRef.
