#include <simgear/math/polar3d.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/math/vector.hxx>
+#include <simgear/misc/exception.hxx>
#include <Main/globals.hxx>
#include <Main/fg_props.hxx>
#include <Main/viewer.hxx>
+#include <Model/loader.hxx>
#include <Objects/obj.hxx>
#include "newcache.hxx"
queue<FGTileEntry *> FGTileMgr::attach_queue;
queue<FGDeferredModel *> FGTileMgr::model_queue;
#endif // ENABLE_THREADS
+queue<FGTileEntry *> FGTileMgr::delete_queue;
// Constructor
FGTileEntry *t = tile_cache.get_tile( b );
if ( t == NULL ) {
+ // make space in the cache
+ while ( (int)tile_cache.get_size() > tile_cache.get_max_cache_size() ) {
+ long index = tile_cache.get_oldest_tile();
+ if ( index >= 0 ) {
+ FGTileEntry *old = tile_cache.get_tile( index );
+ old->disconnect_ssg_nodes();
+ delete_queue.push( old );
+ tile_cache.clear_entry( index );
+ } else {
+ // nothing to free ?!? forge ahead
+ break;
+ }
+ }
+
// create a new entry
FGTileEntry *e = new FGTileEntry( b );
// schedule a needed buckets for loading
-void FGTileMgr::schedule_needed( double vis) {
+void FGTileMgr::schedule_needed( double vis, SGBucket curr_bucket) {
// sanity check (unfortunately needed!)
if ( longitude < -180.0 || longitude > 180.0
|| latitude < -90.0 || latitude > 90.0 )
exit(-1);
}
- SG_LOG( SG_TERRAIN, SG_INFO,
- "scheduling needed tiles for " << longitude << " " << latitude );
+ SG_LOG( SG_TERRAIN, SG_INFO,
+ "scheduling needed tiles for " << longitude << " " << latitude );
-// vis = fgGetDouble("/environment/visibility-m");
+ // vis = fgGetDouble("/environment/visibility-m");
- double tile_width = current_bucket.get_width_m();
- double tile_height = current_bucket.get_height_m();
+ 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 ( xrange < 1 ) { xrange /= 1; }
if ( yrange < 1 ) { yrange = 1; }
- // cout << "xrange = " << xrange << " yrange = " << yrange << endl;
- tile_cache.set_max_cache_size( (2*xrange + 2) * (2*yrange + 2) );
+ // note * 2 at end doubles cache size (for fdm and viewer)
+ 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;
+ */
SGBucket b;
// "rings"
double visibility_meters = fgGetDouble("/environment/visibility-m");
- schedule_needed(visibility_meters);
+ schedule_needed(visibility_meters, current_bucket);
// do we really want to lose this? CLO
#if 0
// chunks. If the chunk isn't already in the cache, then read it from
// disk.
int FGTileMgr::update( double lon, double lat, double visibility_meters ) {
+ sgdVec3 abs_pos_vector;
+ sgdCopyVec3(abs_pos_vector , globals->get_current_view()->get_absolute_view_pos());
+ return update( lon, lat, visibility_meters, abs_pos_vector,
+ current_bucket, previous_bucket,
+ globals->get_scenery()->get_center() );
+}
+
+
+int FGTileMgr::update( double lon, double lat, double visibility_meters,
+ sgdVec3 abs_pos_vector, SGBucket p_current,
+ SGBucket p_previous, Point3D center ) {
// SG_LOG( SG_TERRAIN, SG_DEBUG, "FGTileMgr::update() for "
// << lon << " " << lat );
longitude = lon;
latitude = lat;
+ current_bucket = p_current;
+ previous_bucket = p_previous;
+
// SG_LOG( SG_TERRAIN, SG_DEBUG, "lon "<< lonlat[LON] <<
// " lat " << lonlat[LAT] );
- current_bucket.set_bucket( longitude, latitude );
// SG_LOG( SG_TERRAIN, SG_DEBUG, "Updating Tile list for " << current_bucket );
- if ( tile_cache.exists( current_bucket ) ) {
- current_tile = tile_cache.get_tile( current_bucket );
- globals->get_scenery()->set_next_center( current_tile->center );
- } else {
- SG_LOG( SG_TERRAIN, SG_WARN, "Tile not found (Ok if initializing)" );
- globals->get_scenery()->set_next_center( Point3D(0.0) );
- }
+ setCurrentTile( longitude, latitude);
+ // do tile load scheduling.
+ // Note that we need keep track of both viewer buckets and fdm buckets.
if ( state == Running ) {
- 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.
- schedule_needed(visibility_meters);
- }
+ 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.
+ schedule_needed(visibility_meters, current_bucket);
+ }
} else if ( state == Start || state == Inited ) {
SG_LOG( SG_TERRAIN, SG_INFO, "State == Start || Inited" );
initialize_queue();
loader.update();
}
+
// load the next model in the load queue. Currently this must
// happen in the render thread because model loading can trigger
// texture loading which involves use of the opengl api.
if ( !model_queue.empty() ) {
- // cout << "loading next model ..." << endl;
+ // cout << "loading next model ..." << endl;
// load the next tile in the queue
#ifdef ENABLE_THREADS
FGDeferredModel* dm = model_queue.pop();
#endif
ssgTexturePath( (char *)(dm->get_texture_path().c_str()) );
- ssgEntity *obj_model
- = ssgLoad( (char *)(dm->get_model_path().c_str()) );
- if ( obj_model != NULL ) {
- dm->get_obj_trans()->addKid( obj_model );
- }
- dm->get_tile()->dec_pending_models();
+ try
+ {
+ ssgEntity *obj_model =
+ globals->get_model_loader()->load_model(dm->get_model_path());
+ if ( obj_model != NULL ) {
+ dm->get_obj_trans()->addKid( obj_model );
+ }
+ }
+ catch (const sg_exception& exc)
+ {
+ SG_LOG( SG_ALL, SG_ALERT, exc.getMessage() );
+ }
+ dm->get_tile()->dec_pending_models();
delete dm;
}
-
+
// cout << "current elevation (ssg) == " << scenery.get_cur_elev() << endl;
+
+ // save bucket...
previous_bucket = current_bucket;
- last_longitude = longitude;
- last_latitude = latitude;
// activate loader thread one out of every 5 frames
if ( counter_hack == 0 ) {
- // Notify the tile loader that it can load another tile
-
- loader.update();
-
+ // Notify the tile loader that it can load another tile
+ loader.update();
+ } else {
+ counter_hack = (counter_hack + 1) % 5;
}
- counter_hack = (counter_hack + 1) % 5;
if ( !attach_queue.empty() ) {
#ifdef ENABLE_THREADS
FGTileEntry* e = attach_queue.front();
attach_queue.pop();
#endif
- e->add_ssg_nodes( globals->get_terrain_branch(),
- globals->get_gnd_lights_branch(),
- globals->get_rwy_lights_branch() );
+ e->add_ssg_nodes( globals->get_scenery()->get_terrain_branch(),
+ globals->get_scenery()->get_gnd_lights_branch(),
+ globals->get_scenery()->get_rwy_lights_branch() );
// cout << "Adding ssg nodes for "
}
- sgdVec3 sc;
- sgdSetVec3( sc,
- globals->get_scenery()->get_center()[0],
- globals->get_scenery()->get_center()[1],
- globals->get_scenery()->get_center()[2] );
-
- /*
- cout << "abs view pos = "
- << globals->get_current_view()->get_abs_view_pos()[0] << ","
- << globals->get_current_view()->get_abs_view_pos()[1] << ","
- << globals->get_current_view()->get_abs_view_pos()[2]
- << " view pos = "
- << globals->get_current_view()->get_view_pos()[0] << ","
- << globals->get_current_view()->get_view_pos()[1] << ","
- << globals->get_current_view()->get_view_pos()[2]
- << endl;
- cout << "current_tile = " << current_tile << endl;
- cout << "Scenery center = " << sc[0] << "," << sc[1] << "," << sc[2]
- << endl;
- */
-
- // overridden with actual values if a terrain intersection is
- // found
- double hit_elev = -9999.0;
- double hit_radius = 0.0;
- sgdVec3 hit_normal = { 0.0, 0.0, 0.0 };
-
- bool hit = false;
- if ( fabs(sc[0]) > 1.0 || fabs(sc[1]) > 1.0 || fabs(sc[2]) > 1.0 ) {
- // scenery center has been properly defined so any hit
- // should be valid (and not just luck)
- sgdSetVec3( sc,
- globals->get_scenery()->get_center()[0],
- globals->get_scenery()->get_center()[1],
- globals->get_scenery()->get_center()[2] );
- hit = fgCurrentElev(globals->get_current_view()->get_absolute_view_pos(),
- sc,
- current_tile->get_terra_transform(),
- &hit_list,
- &hit_elev,
- &hit_radius,
- hit_normal);
+ if ( !delete_queue.empty() ) {
+ // cout << "delete queue = " << delete_queue.size() << endl;
+
+ while ( delete_queue.size() > 30 ) {
+ // uh oh, delete queue is blowing up, we aren't clearing
+ // it fast enough. Let's just panic, well not panic, but
+ // get real serious and agressively free up some tiles so
+ // we don't explode our memory usage.
+
+ SG_LOG( SG_TERRAIN, SG_ALERT,
+ "Alert: catching up on tile delete queue" );
+
+ FGTileEntry* e = delete_queue.front();
+ while ( !e->free_tile() );
+ delete_queue.pop();
+ delete e;
}
- if ( hit ) {
- globals->get_scenery()->set_cur_elev( hit_elev );
- globals->get_scenery()->set_cur_radius( hit_radius );
- globals->get_scenery()->set_cur_normal( hit_normal );
- } else {
- globals->get_scenery()->set_cur_elev( -9999.0 );
- globals->get_scenery()->set_cur_radius( 0.0 );
- globals->get_scenery()->set_cur_normal( hit_normal );
+ FGTileEntry* e = delete_queue.front();
+ if ( e->free_tile() ) {
+ delete_queue.pop();
+ delete e;
}
- // cout << "Current elevation = " << scenery.get_cur_elev() << endl;
+ }
+
+ // no reason to update this if we haven't moved...
+ if ( longitude != last_longitude || latitude != last_latitude ) {
+ // update current elevation...
+ if (updateCurrentElevAtPos(abs_pos_vector, center)) {
+ last_longitude = longitude;
+ last_latitude = latitude;
+ }
+ }
#if 0
}
return 1;
}
+// timer event driven call to scheduler for the purpose of refreshing the tile timestamps
+void FGTileMgr::refresh_view_timestamps() {
+ SG_LOG( SG_TERRAIN, SG_INFO,
+ "Refreshing timestamps for " << current_bucket.get_center_lon()
+ << " " << current_bucket.get_center_lat() );
+ schedule_needed(fgGetDouble("/environment/visibility-m"), current_bucket);
+}
+
+
+// check and set current tile and scenery center...
+void FGTileMgr::setCurrentTile(double longitude, double latitude) {
+
+ // check tile cache entry...
+ current_bucket.set_bucket( longitude, latitude );
+ if ( tile_cache.exists( current_bucket ) ) {
+ current_tile = tile_cache.get_tile( current_bucket );
+ globals->get_scenery()->set_next_center( current_tile->center );
+ } else {
+ SG_LOG( SG_TERRAIN, SG_WARN, "Tile not found (Ok if initializing)" );
+ globals->get_scenery()->set_next_center( Point3D(0.0) );
+ }
+}
+
+
+int FGTileMgr::updateCurrentElevAtPos(sgdVec3 abs_pos_vector, Point3D center) {
+
+ sgdVec3 sc;
+
+ sgdSetVec3( sc,
+ center[0],
+ center[1],
+ center[2]);
+
+ // overridden with actual values if a terrain intersection is
+ // found
+ double hit_elev = -9999.0;
+ double hit_radius = 0.0;
+ sgdVec3 hit_normal = { 0.0, 0.0, 0.0 };
+
+ bool hit = false;
+ if ( fabs(sc[0]) > 1.0 || fabs(sc[1]) > 1.0 || fabs(sc[2]) > 1.0 ) {
+ // scenery center has been properly defined so any hit
+ // should be valid (and not just luck)
+ hit = fgCurrentElev(abs_pos_vector,
+ sc,
+ current_tile->get_terra_transform(),
+ &hit_list,
+ &hit_elev,
+ &hit_radius,
+ hit_normal);
+ }
+
+ if ( hit ) {
+ globals->get_scenery()->set_cur_elev( hit_elev );
+ globals->get_scenery()->set_cur_radius( hit_radius );
+ globals->get_scenery()->set_cur_normal( hit_normal );
+ } else {
+ globals->get_scenery()->set_cur_elev( -9999.0 );
+ globals->get_scenery()->set_cur_radius( 0.0 );
+ globals->get_scenery()->set_cur_normal( hit_normal );
+ }
+ return hit;
+}
+
void FGTileMgr::prep_ssg_nodes(float vis) {
-// float vis = 0.0;
-// vis = fgGetDouble("/environment/visibility-m");
+ // traverse the potentially viewable tile list and update range
+ // selector and transform
+
+ // just setup and call new function...
+
+ sgVec3 up;
+ sgCopyVec3( up, globals->get_current_view()->get_world_up() );
+
+ Point3D center;
+ center = globals->get_scenery()->get_center();
+ prep_ssg_nodes( vis, up, center );
+
+}
+
+
+void FGTileMgr::prep_ssg_nodes(float vis, sgVec3 up, Point3D center) {
// traverse the potentially viewable tile list and update range
// selector and transform
FGTileEntry *e;
tile_cache.reset_traversal();
- sgVec3 up;
- sgCopyVec3( up, globals->get_current_view()->get_world_up() );
-
while ( ! tile_cache.at_end() ) {
// cout << "processing a tile" << endl;
if ( (e = tile_cache.get_current()) ) {
- e->prep_ssg_node( globals->get_scenery()->get_center(), up, vis);
+ e->prep_ssg_node( center, up, vis);
} else {
SG_LOG(SG_INPUT, SG_ALERT, "warning ... empty tile in cache");
}
projects / flightgear.git / blobdiff