//
// Written by Curtis Olson, started January 1998.
//
-// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+// Copyright (C) 1997 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
# include <config.h>
#endif
-#ifdef HAVE_WINDOWS_H
-# include <windows.h>
-#endif
-
-#include <GL/glut.h>
+#include <algorithm>
+#include <functional>
-#include <plib/ssg.h>
+#include <osgViewer/Viewer>
#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
-#include <simgear/math/point3d.hxx>
#include <simgear/math/polar3d.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/math/vector.hxx>
+#include <simgear/structure/exception.hxx>
+#include <simgear/scene/model/modellib.hxx>
+#include <simgear/scene/tgdb/SGReaderWriterBTGOptions.hxx>
#include <Main/globals.hxx>
-#include <Objects/obj.hxx>
-
-#ifndef FG_OLD_WEATHER
-# include <WeatherCM/FGLocalWeatherDatabase.h>
-#else
-# include <Weather/weather.hxx>
-#endif
+#include <Main/fg_props.hxx>
+#include <Main/renderer.hxx>
+#include <Main/viewer.hxx>
+#include <Scripting/NasalSys.hxx>
-#include "newcache.hxx"
#include "scenery.hxx"
+#include "SceneryPager.hxx"
#include "tilemgr.hxx"
-#define TEST_LAST_HIT_CACHE
-
-extern ssgRoot *scene;
-extern ssgBranch *terrain;
-
-// the tile manager
-FGTileMgr global_tile_mgr;
-
-
-// a temporary hack until we get everything rewritten with sgdVec3
-static inline Point3D operator + (const Point3D& a, const sgdVec3 b)
-{
- return Point3D(a.x()+b[0], a.y()+b[1], a.z()+b[2]);
-}
-
+using std::for_each;
+using flightgear::SceneryPager;
+using simgear::SGModelLib;
+using simgear::TileEntry;
+using simgear::TileCache;
-// Constructor
FGTileMgr::FGTileMgr():
state( Start ),
vis( 16000 )
}
-// Destructor
FGTileMgr::~FGTileMgr() {
+ // remove all nodes we might have left behind
+ osg::Group* group = globals->get_scenery()->get_terrain_branch();
+ group->removeChildren(0, group->getNumChildren());
}
// Initialize the Tile Manager subsystem
int FGTileMgr::init() {
- FG_LOG( FG_TERRAIN, FG_INFO, "Initializing Tile Manager subsystem." );
+ SG_LOG( SG_TERRAIN, SG_INFO, "Initializing Tile Manager subsystem." );
- if ( state != Start ) {
- FG_LOG( FG_TERRAIN, FG_INFO,
- "... Reinitializing." );
- destroy_queue();
- } else {
- FG_LOG( FG_TERRAIN, FG_INFO,
- "... First time through." );
- global_tile_cache.init();
- }
+ _options = new SGReaderWriterBTGOptions;
+ _options->setMatlib(globals->get_matlib());
+ _options->setUseRandomObjects(fgGetBool("/sim/rendering/random-objects", true));
+ _options->setUseRandomVegetation(fgGetBool("/sim/rendering/random-vegetation", true));
+ osgDB::FilePathList &fp = _options->getDatabasePathList();
+ const string_list &sc = globals->get_fg_scenery();
+ fp.clear();
+ std::copy(sc.begin(), sc.end(), back_inserter(fp));
+
+ TileEntry::setModelLoadHelper(this);
- hit_list.clear();
+ tile_cache.init();
state = Inited;
current_bucket.make_bad();
longitude = latitude = -1000.0;
- last_longitude = last_latitude = -1000.0;
-
+
return 1;
}
-
// schedule a tile for loading
-void FGTileMgr::sched_tile( const SGBucket& b ) {
+void FGTileMgr::sched_tile( const SGBucket& b, const bool is_inner_ring ) {
// see if tile already exists in the cache
- FGTileEntry *t = global_tile_cache.get_tile( b );
-
- if ( t == NULL ) {
- // register a load request
- load_queue.push_back( b );
- }
-}
-
+ TileEntry *t = tile_cache.get_tile( b );
+
+ if ( !t ) {
+ // make space in the cache
+ SceneryPager* pager = FGScenery::getPagerSingleton();
+ while ( (int)tile_cache.get_size() > tile_cache.get_max_cache_size() ) {
+ long index = tile_cache.get_oldest_tile();
+ if ( index >= 0 ) {
+ TileEntry *old = tile_cache.get_tile( index );
+ tile_cache.clear_entry( index );
+ osg::ref_ptr<osg::Object> subgraph = old->getNode();
+ old->removeFromSceneGraph();
+ delete old;
+ // zeros out subgraph ref_ptr, so subgraph is owned by
+ // the pager and will be deleted in the pager thread.
+ pager->queueDeleteRequest(subgraph);
+ } else {
+ // nothing to free ?!? forge ahead
+ break;
+ }
+ }
-// load a tile
-void FGTileMgr::load_tile( const SGBucket& b ) {
- // see if tile already exists in the cache
- FGTileEntry *t = global_tile_cache.get_tile( b );
+ // create a new entry
+ TileEntry *e = new TileEntry( b );
- if ( t == NULL ) {
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Loading tile " << b );
- global_tile_cache.fill_in( b );
- t = global_tile_cache.get_tile( b );
- t->prep_ssg_node( scenery.center, vis);
+ // insert the tile into the cache
+ if ( tile_cache.insert_tile( e ) ) {
+ // update_queues will generate load request
+ } else {
+ // insert failed (cache full with no available entries to
+ // delete.) Try again later
+ delete e;
+ }
+ // Attach to scene graph
+ e->addToSceneGraph(globals->get_scenery()->get_terrain_branch());
} else {
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Tile already in cache " << b );
+ t->set_inner_ring( is_inner_ring );
}
}
-static void CurrentNormalInLocalPlane(sgVec3 dst, sgVec3 src) {
- sgVec3 tmp;
- sgSetVec3(tmp, src[0], src[1], src[2] );
- sgMat4 TMP;
- sgTransposeNegateMat4 ( TMP, globals->get_current_view()->get_UP() ) ;
- sgXformVec3(tmp, tmp, TMP);
- sgSetVec3(dst, tmp[2], tmp[1], tmp[0] );
-}
-
-
-// Determine scenery altitude via ssg. Normally this just happens
-// when we render the scene, but we'd also like to be able to do this
-// explicitely. lat & lon are in radians. view_pos in current world
-// coordinate translated near (0,0,0) (in meters.) Returns result in
-// meters.
-bool FGTileMgr::current_elev_ssg( sgdVec3 abs_view_pos, double *terrain_elev ) {
- sgdVec3 view_pos;
- sgdVec3 sc;
- sgdSetVec3( sc, scenery.center.x(), scenery.center.y(), scenery.center.z());
- sgdSubVec3( view_pos, abs_view_pos, sc );
-
- sgdVec3 orig, dir;
- sgdCopyVec3(orig, view_pos );
- sgdCopyVec3(dir, abs_view_pos );
-
- hit_list.Intersect( terrain, orig, dir );
-
- int this_hit=0;
- Point3D geoc;
- double result = -9999;
-
- int hitcount = hit_list.num_hits();
- for ( int i = 0; i < hitcount; ++i ) {
- geoc = sgCartToPolar3d( scenery.center + hit_list.get_point(i) );
- double lat_geod, alt, sea_level_r;
- sgGeocToGeod(geoc.lat(), geoc.radius(), &lat_geod,
- &alt, &sea_level_r);
- if ( alt > result && alt < 10000 ) {
- result = alt;
- this_hit = i;
- }
- }
-
- if ( result > -9000 ) {
- *terrain_elev = result;
- scenery.cur_radius = geoc.radius();
- sgVec3 tmp;
- sgSetVec3(tmp, hit_list.get_normal(this_hit));
- // cout << "cur_normal: " << tmp[0] << " " << tmp[1] << " "
- // << tmp[2] << endl;
- ssgState *IntersectedLeafState =
- ((ssgLeaf*)hit_list.get_entity(this_hit))->getState();
- CurrentNormalInLocalPlane(tmp, tmp);
- sgdSetVec3( scenery.cur_normal, tmp );
- // cout << "NED: " << tmp[0] << " " << tmp[1] << " " << tmp[2] << endl;
- return true;
- } else {
- FG_LOG( FG_TERRAIN, FG_INFO, "no terrain intersection" );
- *terrain_elev = 0.0;
- float *up = globals->get_current_view()->get_world_up();
- sgdSetVec3(scenery.cur_normal, up[0], up[1], up[2]);
- return false;
+// schedule a needed buckets for loading
+void FGTileMgr::schedule_needed( double vis, const SGBucket& curr_bucket) {
+ // sanity check (unfortunately needed!)
+ if ( longitude < -180.0 || longitude > 180.0
+ || latitude < -90.0 || latitude > 90.0 )
+ {
+ SG_LOG( SG_TERRAIN, SG_ALERT,
+ "Attempting to schedule tiles for bogus lon and lat = ("
+ << longitude << "," << latitude << ")" );
+ return; // FIXME
+ SG_LOG( SG_TERRAIN, SG_ALERT,
+ "This is a FATAL error. Exiting!" );
+ exit(-1);
}
-}
+ SG_LOG( SG_TERRAIN, SG_INFO,
+ "scheduling needed tiles for " << longitude << " " << latitude );
-// schedule a needed buckets for loading
-void FGTileMgr::schedule_needed() {
-#ifndef FG_OLD_WEATHER
- if ( WeatherDatabase != NULL ) {
- vis = WeatherDatabase->getWeatherVisibility();
- } else {
- vis = 16000;
- }
-#else
- vis = current_weather.get_visibility();
-#endif
- cout << "visibility = " << vis << endl;
+ // vis = fgGetDouble("/environment/visibility-m");
- double tile_width = current_bucket.get_width_m();
- double tile_height = current_bucket.get_height_m();
- cout << "tile width = " << tile_width << " tile_height = " << tile_height
- << endl;
+ double tile_width = curr_bucket.get_width_m();
+ double tile_height = curr_bucket.get_height_m();
+ // cout << "tile width = " << tile_width << " tile_height = "
+ // << tile_height << endl;
xrange = (int)(vis / tile_width) + 1;
yrange = (int)(vis / tile_height) + 1;
if ( xrange < 1 ) { xrange = 1; }
if ( yrange < 1 ) { yrange = 1; }
- cout << "xrange = " << xrange << " yrange = " << yrange << endl;
- global_tile_cache.set_max_cache_size( (2*xrange + 2) * (2*yrange + 2) );
+ // make the cache twice as large to avoid losing terrain when switching
+ // between aircraft and tower views
+ tile_cache.set_max_cache_size( (2*xrange + 2) * (2*yrange + 2) * 2 );
+ // cout << "xrange = " << xrange << " yrange = " << yrange << endl;
+ // cout << "max cache size = " << tile_cache.get_max_cache_size()
+ // << " current cache size = " << tile_cache.get_size() << endl;
+
+ // clear the inner ring flags so we can set them below. This
+ // prevents us from having "true" entries we aren't able to find
+ // to get rid of if we teleport a long ways away from the current
+ // location.
+ tile_cache.clear_inner_ring_flags();
SGBucket b;
// schedule center tile first so it can be loaded first
b = sgBucketOffset( longitude, latitude, 0, 0 );
- sched_tile( b );
+ sched_tile( b, true );
+
+ int x, y;
// schedule next ring of 8 tiles
- for ( int x = -1; x <= 1; ++x ) {
- for ( int y = -1; y <= 1; ++y ) {
- if ( x != 0 || y != 0 ) {
- b = sgBucketOffset( longitude, latitude, x, y );
- if ( ! global_tile_cache.exists( b ) ) {
- sched_tile( b );
- }
- }
- }
+ for ( x = -1; x <= 1; ++x ) {
+ for ( y = -1; y <= 1; ++y ) {
+ if ( x != 0 || y != 0 ) {
+ b = sgBucketOffset( longitude, latitude, x, y );
+ sched_tile( b, true );
+ }
+ }
}
-
+
// schedule remaining tiles
- for ( int x = -xrange; x <= xrange; ++x ) {
- for ( int y = -yrange; y <= yrange; ++y ) {
- if ( x < -1 || x > 1 || y < -1 || y > 1 ) {
- SGBucket b = sgBucketOffset( longitude, latitude, x, y );
- if ( ! global_tile_cache.exists( b ) ) {
- sched_tile( b );
- }
- }
- }
+ for ( x = -xrange; x <= xrange; ++x ) {
+ for ( y = -yrange; y <= yrange; ++y ) {
+ if ( x < -1 || x > 1 || y < -1 || y > 1 ) {
+ SGBucket b = sgBucketOffset( longitude, latitude, x, y );
+ sched_tile( b, false );
+ }
+ }
}
}
// First time through or we have teleported, initialize the
// system and load all relavant tiles
- FG_LOG( FG_TERRAIN, FG_INFO, "Updating Tile list for " << current_bucket );
- cout << "tile cache size = " << global_tile_cache.get_size() << endl;
-
- int i;
+ SG_LOG( SG_TERRAIN, SG_INFO, "Initialize_queue(): Updating Tile list for "
+ << current_bucket );
+ // cout << "tile cache size = " << tile_cache.get_size() << endl;
// wipe/initialize tile cache
- // global_tile_cache.init();
+ // tile_cache.init();
previous_bucket.make_bad();
// build the local area list and schedule tiles for loading
// start with the center tile and work out in concentric
// "rings"
- schedule_needed();
-
- // Now force a load of the center tile and inner ring so we
- // have something to see in our first frame.
- for ( i = 0; i < 9; ++i ) {
- if ( load_queue.size() ) {
- FG_LOG( FG_TERRAIN, FG_DEBUG,
- "Load queue not empty, loading a tile" );
+ double visibility_meters = fgGetDouble("/environment/visibility-m");
+ schedule_needed(visibility_meters, current_bucket);
+}
- SGBucket pending = load_queue.front();
- load_queue.pop_front();
- load_tile( pending );
- }
+osg::Node*
+FGTileMgr::loadTileModel(const string& modelPath, bool cacheModel)
+{
+ osg::Node* result = 0;
+ try {
+ if(cacheModel)
+ result =
+ SGModelLib::loadModel(modelPath, globals->get_props(),
+ new FGNasalModelData);
+
+ else
+ result=
+ SGModelLib::loadPagedModel(modelPath, globals->get_props(),
+ new FGNasalModelData);
+ } catch (const sg_io_exception& exc) {
+ string m(exc.getMessage());
+ m += " ";
+ m += exc.getLocation().asString();
+ SG_LOG( SG_ALL, SG_ALERT, m );
+ } catch (const sg_exception& exc) { // XXX may be redundant
+ SG_LOG( SG_ALL, SG_ALERT, exc.getMessage());
}
+ return result;
}
-
-// forced emptying of the queue
-// This is necessay to keep bookeeping straight for the
-// tile_cache -- which actually handles all the
-// (de)allocations
-void FGTileMgr::destroy_queue() {
- load_queue.clear();
+// Helper class for STL fun
+class TileLoad : public std::unary_function<TileCache::tile_map::value_type,
+ void>
+{
+public:
+ TileLoad(SceneryPager *pager, osg::FrameStamp* framestamp,
+ osg::Group* terrainBranch, osgDB::ReaderWriter::Options* options) :
+ _pager(pager), _framestamp(framestamp), _options(options) {}
+
+ TileLoad(const TileLoad& rhs) :
+ _pager(rhs._pager), _framestamp(rhs._framestamp),
+ _options(rhs._options) {}
+
+ void operator()(TileCache::tile_map::value_type& tilePair)
+ {
+ TileEntry* entry = tilePair.second;
+ if (entry->getNode()->getNumChildren() == 0) {
+ _pager->queueRequest(entry->tileFileName,
+ entry->getNode(),
+ entry->get_inner_ring() ? 10.0f : 1.0f,
+ _framestamp,
+#ifdef FGOSGPAGER25
+ entry->getDatabaseRequest(),
+#endif
+ _options);
+ }
+ }
+private:
+ SceneryPager* _pager;
+ osg::FrameStamp* _framestamp;
+ osgDB::ReaderWriter::Options* _options;
+};
+
+/**
+ * Update the various queues maintained by the tilemagr (private
+ * internal function, do not call directly.)
+ */
+void FGTileMgr::update_queues()
+{
+ SceneryPager* pager = FGScenery::getPagerSingleton();
+ osg::FrameStamp* framestamp
+ = globals->get_renderer()->getViewer()->getFrameStamp();
+ tile_cache.set_current_time(framestamp->getReferenceTime());
+ for_each(tile_cache.begin(), tile_cache.end(),
+ TileLoad(pager,
+ framestamp,
+ globals->get_scenery()->get_terrain_branch(), _options.get()));
}
// given the current lon/lat (in degrees), fill in the array of local
// chunks. If the chunk isn't already in the cache, then read it from
// disk.
-int FGTileMgr::update( double lon, double lat ) {
- FG_LOG( FG_TERRAIN, FG_DEBUG, "FGTileMgr::update()" );
+int FGTileMgr::update( double visibility_meters )
+{
+ SGVec3d viewPos = globals->get_current_view()->get_view_pos();
+ return update(SGGeod::fromCart(viewPos), visibility_meters);
+}
- // FGInterface *f = current_aircraft.fdm_state;
+int FGTileMgr::update( const SGGeod& location, double visibility_meters)
+{
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "FGTileMgr::update()" );
- // lonlat for this update
- // longitude = f->get_Longitude() * RAD_TO_DEG;
- // latitude = f->get_Latitude() * RAD_TO_DEG;
- longitude = lon;
- latitude = lat;
- // FG_LOG( FG_TERRAIN, FG_DEBUG, "lon "<< lonlat[LON] <<
- // " lat " << lonlat[LAT] );
+ longitude = location.getLongitudeDeg();
+ latitude = location.getLatitudeDeg();
- current_bucket.set_bucket( longitude, latitude );
- // FG_LOG( FG_TERRAIN, FG_DEBUG, "Updating Tile list for " << current_bucket );
+ // SG_LOG( SG_TERRAIN, SG_DEBUG, "FGTileMgr::update() for "
+ // << longitude << " " << latatitude );
- if ( global_tile_cache.exists( current_bucket ) ) {
- current_tile = global_tile_cache.get_tile( current_bucket );
- scenery.next_center = current_tile->center;
- } else {
- FG_LOG( FG_TERRAIN, FG_WARN, "Tile not found (Ok if initializing)" );
- }
+ current_bucket.set_bucket( location );
+ // SG_LOG( SG_TERRAIN, SG_DEBUG, "Updating tile list for "
+ // << current_bucket );
+ fgSetInt( "/environment/current-tile-id", current_bucket.gen_index() );
+ // do tile load scheduling.
+ // Note that we need keep track of both viewer buckets and fdm buckets.
if ( state == Running ) {
- if ( !(current_bucket == previous_bucket) ) {
- // We've moved to a new bucket, we need to schedule any
- // needed tiles for loading.
- schedule_needed();
- }
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "State == Running" );
+ if (current_bucket != previous_bucket) {
+ // We've moved to a new bucket, we need to schedule any
+ // needed tiles for loading.
+ SG_LOG( SG_TERRAIN, SG_INFO, "FGTileMgr::update()" );
+ schedule_needed(visibility_meters, current_bucket);
+ }
} else if ( state == Start || state == Inited ) {
- initialize_queue();
- state = Running;
- }
-
- if ( load_queue.size() ) {
- FG_LOG( FG_TERRAIN, FG_INFO, "Load queue size = " << load_queue.size()
- << " loading a tile" );
-
- SGBucket pending = load_queue.front();
- load_queue.pop_front();
- load_tile( pending );
- }
-
- if ( scenery.center == Point3D(0.0) ) {
- // initializing
- cout << "initializing scenery current elevation ... " << endl;
- sgdVec3 tmp_abs_view_pos;
- sgVec3 tmp_view_pos;
-
- Point3D geod_pos = Point3D( longitude * DEG_TO_RAD,
- latitude * DEG_TO_RAD,
- 0.0);
- Point3D tmp = sgGeodToCart( geod_pos );
- scenery.center = tmp;
- sgdSetVec3( tmp_abs_view_pos, tmp.x(), tmp.y(), tmp.z() );
-
- // cout << "abs_view_pos = " << tmp_abs_view_pos << endl;
- prep_ssg_nodes();
- sgSetVec3( tmp_view_pos, 0.0, 0.0, 0.0 );
- double tmp_elev;
- if ( current_elev_ssg(tmp_abs_view_pos, &tmp_elev) ) {
- scenery.cur_elev = tmp_elev;
- } else {
- scenery.cur_elev = 0.0;
- }
- cout << "result = " << scenery.cur_elev << endl;
- } else {
- // cout << "abs view pos = " << current_view.abs_view_pos
- // << " view pos = " << current_view.view_pos << endl;
- double tmp_elev;
- if ( current_elev_ssg(globals->get_current_view()->get_abs_view_pos(),
- &tmp_elev) )
- {
- scenery.cur_elev = tmp_elev;
- } else {
- scenery.cur_elev = 0.0;
- }
+ SG_LOG( SG_TERRAIN, SG_INFO, "State == Start || Inited" );
+// initialize_queue();
+ state = Running;
+ if (current_bucket != previous_bucket
+ && current_bucket.get_chunk_lon() != -1000) {
+ SG_LOG( SG_TERRAIN, SG_INFO, "FGTileMgr::update()" );
+ schedule_needed(visibility_meters, current_bucket);
+ }
}
- // cout << "current elevation (ssg) == " << scenery.cur_elev << endl;
+ update_queues();
+ // save bucket...
previous_bucket = current_bucket;
- last_longitude = longitude;
- last_latitude = latitude;
return 1;
}
-
-void FGTileMgr::prep_ssg_nodes() {
- float vis = 0.0;
-
-#ifndef FG_OLD_WEATHER
- if ( WeatherDatabase ) {
- vis = WeatherDatabase->getWeatherVisibility();
- } else {
- vis = 16000;
- }
-#else
- vis = current_weather.get_visibility();
-#endif
- // cout << "visibility = " << vis << endl;
+void FGTileMgr::prep_ssg_nodes(float vis) {
// traverse the potentially viewable tile list and update range
// selector and transform
- FGTileEntry *e;
- global_tile_cache.reset_traversal();
+ TileEntry *e;
+ tile_cache.reset_traversal();
- while ( ! global_tile_cache.at_end() ) {
+ while ( ! tile_cache.at_end() ) {
// cout << "processing a tile" << endl;
- if ( (e = global_tile_cache.get_current()) ) {
- e->prep_ssg_node( scenery.center, vis);
+ if ( (e = tile_cache.get_current()) ) {
+ e->prep_ssg_node(vis);
} else {
- cout << "warning ... empty tile in cache" << endl;
+ SG_LOG(SG_INPUT, SG_ALERT, "warning ... empty tile in cache");
}
- global_tile_cache.next();
- }
+ tile_cache.next();
+ }
+}
+
+bool FGTileMgr::scenery_available(const SGGeod& position, double range_m)
+{
+ return scenery_available(position.getLatitudeDeg(),
+ position.getLongitudeDeg(), range_m);
+}
+
+bool FGTileMgr::scenery_available(double lat, double lon, double range_m)
+{
+ // sanity check (unfortunately needed!)
+ if ( lon <= -180.0 || lon >= 180.0 || lat <= -90.0 || lat >= 90.0 )
+ return false;
+
+ SGBucket bucket(lon, lat);
+ TileEntry *te = tile_cache.get_tile(bucket);
+ if (!te || !te->is_loaded())
+ return false;
+
+ // Traverse all tiles required to be there for the given visibility.
+ // This uses exactly the same algorithm like the tile scheduler.
+ double tile_width = bucket.get_width_m();
+ double tile_height = bucket.get_height_m();
+
+ int xrange = (int)fabs(range_m / tile_width) + 1;
+ int yrange = (int)fabs(range_m / tile_height) + 1;
+
+ for ( int x = -xrange; x <= xrange; ++x ) {
+ for ( int y = -yrange; y <= yrange; ++y ) {
+ // We have already checked for the center tile.
+ if ( x != 0 || y != 0 ) {
+ SGBucket b = sgBucketOffset( lon, lat, x, y );
+ TileEntry *te = tile_cache.get_tile(b);
+ if (!te || !te->is_loaded())
+ return false;
+ }
+ }
+ }
+
+ // Survived all tests.
+ return true;
+}
+
+namespace
+{
+struct IsTileLoaded :
+ public std::unary_function<TileCache::tile_map::value_type, bool>
+{
+ bool operator()(const TileCache::tile_map::value_type& tilePair) const
+ {
+ return tilePair.second->is_loaded();
+ }
+};
+}
+
+bool FGTileMgr::isSceneryLoaded()
+{
+ return (std::find_if(tile_cache.begin(), tile_cache.end(),
+ std::not1(IsTileLoaded()))
+ == tile_cache.end());
}
projects / flightgear.git / blobdiff