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Use the airport elevation instead of the actual ground elevation when out of visible range of the user. This should reduce thrashing / pollution of the tile cache.

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daveluff 2004-03-05 16:24:04 +00:00
parent f8ef6d16b4
commit 4c84d11862
1 changed files with 10 additions and 2 deletions
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12
src/ATC/AILocalTraffic.cxx
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@ -38,6 +38,7 @@ during descent to avoid occasionally landing short or long.
#include <Airports/runways.hxx>
#include <Main/globals.hxx>
#include <Main/viewer.hxx>
#include <Scenery/scenery.hxx>
#include <Scenery/tilemgr.hxx>
#include <simgear/math/point3d.hxx>
@ -1511,17 +1512,24 @@ void FGAILocalTraffic::Taxi(double dt) {
// Either this function or the logic of how often it is called
// will almost certainly change.
void FGAILocalTraffic::DoGroundElev() {
// It would be nice if we could set the correct tile center here in order to get a correct
// answer with one call to the function, but what I tried in the two commented-out lines
// below only intermittently worked, and I haven't quite groked why yet.
//SGBucket buck(pos.lon(), pos.lat());
//aip.getSGLocation()->set_tile_center(Point3D(buck.get_center_lon(), buck.get_center_lat(), 0.0));
// Only do the proper hitlist stuff if we are within visible range of the viewer.
double visibility_meters = fgGetDouble("/environment/visibility-m");
FGViewer* vw = globals->get_current_view();
if(dclGetHorizontalSeparation(_pos, Point3D(vw->getLongitude_deg(), vw->getLatitude_deg(), 0.0)) > visibility_meters) {
_aip.getSGLocation()->set_cur_elev_m(aptElev);
return;
}
//globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location,
globals->get_tile_mgr()->prep_ssg_nodes( _aip.getSGLocation(), visibility_meters );
Point3D scenery_center = globals->get_scenery()->get_center();
Point3D scenery_center = globals->get_scenery()->get_center();
globals->get_tile_mgr()->update( _aip.getSGLocation(), visibility_meters, (_aip.getSGLocation())->get_absolute_view_pos( scenery_center ) );
// save results of update in SGLocation for fdm...