#endif
#include <GL/glut.h>
-#include <XGL/xgl.h>
-
-#include <Aircraft/aircraft.hxx>
-
-#include <Debug/logstream.hxx>
-// #include <Bucket/bucketutils.hxx>
-#include <Include/fg_constants.h>
-#include <Main/options.hxx>
-#include <Main/views.hxx>
-#include <Math/fg_geodesy.hxx>
-#include <Math/mat3.h>
-#include <Math/point3d.hxx>
-#include <Math/polar3d.hxx>
-#include <Math/vector.hxx>
-#include <Objects/materialmgr.hxx>
+
+#include <plib/ssg.h>
+
+#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 <Main/globals.hxx>
+#include <Main/viewer.hxx>
#include <Objects/obj.hxx>
-#include <Weather/weather.hxx>
+#ifndef FG_OLD_WEATHER
+# include <WeatherCM/FGLocalWeatherDatabase.h>
+#else
+# include <Weather/weather.hxx>
+#endif
+
+#include "newcache.hxx"
#include "scenery.hxx"
-#include "tilecache.hxx"
-#include "tileentry.hxx"
#include "tilemgr.hxx"
+#define TEST_LAST_HIT_CACHE
-// to test clipping speedup in fgTileMgrRender()
-#if defined ( USE_FAST_FOV_CLIP )
-// #define TEST_FOV_CLIP
-// #define TEST_ELEV
-#endif
-
+extern ssgRoot *scene;
+extern ssgBranch *terrain;
+extern ssgBranch *ground;
// the tile manager
FGTileMgr global_tile_mgr;
+#ifdef ENABLE_THREADS
+SGLockedQueue<FGTileEntry *> FGTileMgr::attach_queue;
+SGLockedQueue<FGDeferredModel *> FGTileMgr::model_queue;
+#else
+queue<FGTileEntry *> FGTileMgr::attach_queue;
+queue<FGDeferredModel *> FGTileMgr::model_queue;
+#endif // ENABLE_THREADS
+
+
// Constructor
-FGTileMgr::FGTileMgr ( void ):
- state( Start )
+FGTileMgr::FGTileMgr():
+ state( Start ),
+ vis( 16000 ),
+ counter_hack(0)
{
}
// Destructor
-FGTileMgr::~FGTileMgr ( void ) {
+FGTileMgr::~FGTileMgr() {
}
// Initialize the Tile Manager subsystem
-int FGTileMgr::init( void ) {
- FG_LOG( FG_TERRAIN, FG_INFO, "Initializing Tile Manager subsystem." );
+int FGTileMgr::init() {
+ SG_LOG( SG_TERRAIN, SG_INFO, "Initializing Tile Manager subsystem." );
- // load default material library
- if ( ! material_mgr.loaded() ) {
- material_mgr.load_lib();
- }
+ tile_cache.init();
- state = Inited;
+#if 0
- return 1;
-}
+ // instead it's just a lot easier to let any pending work flush
+ // through, rather than trying to arrest the queue and nuke all
+ // the various work at all the various stages and get everything
+ // cleaned up properly.
+ while ( ! attach_queue.empty() ) {
+ attach_queue.pop();
+ }
-// schedule a tile for loading
-void FGTileMgr::sched_tile( const FGBucket& b, int *index ) {
- // see if tile already exists in the cache
- *index = global_tile_cache.exists( b );
- if ( *index < 0 ) {
- // find the next availabel cache entry and mark it as scheduled
- *index = global_tile_cache.next_avail();
- FGTileEntry *t = global_tile_cache.get_tile( *index );
- t->mark_scheduled();
-
- // register a load request
- FGLoadRec request;
- request.b = b;
- request.index = *index;
- load_queue.push_back( request );
+ while ( ! model_queue.empty() ) {
+#ifdef ENABLE_THREADS
+ FGDeferredModel* dm = model_queue.pop();
+#else
+ FGDeferredModel* dm = model_queue.front();
+ model_queue.pop();
+#endif
+ delete dm;
}
-}
+ loader.reinit();
+#endif
+ hit_list.clear();
-// load a tile
-void FGTileMgr::load_tile( const FGBucket& b, int cache_index) {
+ state = Inited;
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Loading tile " << b );
-
- global_tile_cache.fill_in(cache_index, b);
+ previous_bucket.make_bad();
+ current_bucket.make_bad();
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Loaded for cache index: " << cache_index );
+ longitude = latitude = -1000.0;
+ last_longitude = last_latitude = -1000.0;
+
+ return 1;
}
-// Calculate shortest distance from point to line
-static double point_line_dist_squared( const Point3D& tc, const Point3D& vp,
- MAT3vec d )
-{
- MAT3vec p, p0;
+// schedule a tile for loading
+void FGTileMgr::sched_tile( const SGBucket& b ) {
+ // see if tile already exists in the cache
+ FGTileEntry *t = tile_cache.get_tile( b );
- p[0] = tc.x(); p[1] = tc.y(); p[2] = tc.z();
- p0[0] = vp.x(); p0[1] = vp.y(); p0[2] = vp.z();
+ if ( t == NULL ) {
+ // create a new entry
+ FGTileEntry *e = new FGTileEntry( b );
- return fgPointLineSquared(p, p0, d);
+ // insert the tile into the cache
+ if ( tile_cache.insert_tile( e ) ) {
+ // Schedule tile for loading
+ loader.add( e );
+ } else {
+ // insert failed (cache full with no available entries to
+ // delete.) Try again later
+ delete e;
+ }
+ }
}
-// Determine scenery altitude. 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. abs_view_pos in meters.
-// Returns result in meters.
-double
-FGTileMgr::current_elev_new( const FGBucket& p ) {
- FGTileEntry *t;
- fgFRAGMENT *frag_ptr;
- Point3D abs_view_pos = current_view.get_abs_view_pos();
- Point3D earth_center(0.0);
- Point3D result;
- MAT3vec local_up;
- double dist, lat_geod, alt, sea_level_r;
- int index;
-
- local_up[0] = abs_view_pos.x();
- local_up[1] = abs_view_pos.y();
- local_up[2] = abs_view_pos.z();
-
- // Find current translation offset
- // fgBucketFind(lon * RAD_TO_DEG, lat * RAD_TO_DEG, &p);
- index = global_tile_cache.exists(p);
- if ( index < 0 ) {
- FG_LOG( FG_TERRAIN, FG_WARN, "Tile not found" );
- return 0.0;
+// 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;
- t = global_tile_cache.get_tile(index);
+ 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;
- scenery.next_center = t->center;
-
- FG_LOG( FG_TERRAIN, FG_DEBUG,
- "Current bucket = " << p << " Index = " << p.gen_index_str() );
- FG_LOG( FG_TERRAIN, FG_DEBUG,
- "abs_view_pos = " << abs_view_pos );
-
- // calculate tile offset
- // x = (t->offset.x = t->center.x - scenery.center.x);
- // y = (t->offset.y = t->center.y - scenery.center.y);
- // z = (t->offset.z = t->center.z - scenery.center.z);
-
- // calc current terrain elevation calculate distance from
- // vertical tangent line at current position to center of
- // tile.
-
- /* printf("distance squared = %.2f, bounding radius = %.2f\n",
- point_line_dist_squared(&(t->offset), &(v->view_pos),
- v->local_up), t->bounding_radius); */
-
- dist = point_line_dist_squared( t->center, abs_view_pos, local_up );
- if ( dist < FG_SQUARE(t->bounding_radius) ) {
-
- // traverse fragment list for tile
- FGTileEntry::FragmentIterator current = t->begin();
- FGTileEntry::FragmentIterator last = t->end();
-
- for ( ; current != last; ++current ) {
- frag_ptr = &(*current);
- /* printf("distance squared = %.2f, bounding radius = %.2f\n",
- point_line_dist_squared( &(frag_ptr->center),
- &abs_view_pos), local_up),
- frag_ptr->bounding_radius); */
-
- dist = point_line_dist_squared( frag_ptr->center,
- abs_view_pos,
- local_up);
- if ( dist <= FG_SQUARE(frag_ptr->bounding_radius) ) {
- if ( frag_ptr->intersect( abs_view_pos,
- earth_center, 0, result ) ) {
- FG_LOG( FG_TERRAIN, FG_DEBUG, "intersection point " <<
- result );
- // compute geocentric coordinates of tile center
- Point3D pp = fgCartToPolar3d(result);
- FG_LOG( FG_TERRAIN, FG_DEBUG, " polar form = " << pp );
- // convert to geodetic coordinates
- fgGeocToGeod(pp.lat(), pp.radius(), &lat_geod,
- &alt, &sea_level_r);
-
- // printf("alt = %.2f\n", alt);
- // exit since we found an intersection
- if ( alt > -9999.0 ) {
- // printf("returning alt\n");
- return alt;
- } else {
- // printf("returning 0\n");
- return 0.0;
- }
- }
- }
- }
- }
+ 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;
- FG_LOG( FG_TERRAIN, FG_INFO, "(new) no terrain intersection found" );
+ tile_cache.set_max_cache_size( (2*xrange + 2) * (2*yrange + 2) );
- return 0.0;
-}
+ SGBucket b;
+ // schedule center tile first so it can be loaded first
+ b = sgBucketOffset( longitude, latitude, 0, 0 );
+ sched_tile( b );
-// Determine scenery altitude. 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. abs_view_pos in meters.
-// Returns result in meters.
-double
-FGTileMgr::current_elev( double lon, double lat, const Point3D& abs_view_pos ) {
- FGTileCache *c;
- FGTileEntry *t;
- fgFRAGMENT *frag_ptr;
- Point3D earth_center(0.0);
- Point3D result;
- MAT3vec local_up;
- double dist, lat_geod, alt, sea_level_r;
- int index;
-
- c = &global_tile_cache;
-
- local_up[0] = abs_view_pos.x();
- local_up[1] = abs_view_pos.y();
- local_up[2] = abs_view_pos.z();
-
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Absolute view pos = " << abs_view_pos );
-
- // Find current translation offset
- FGBucket p( lon * RAD_TO_DEG, lat * RAD_TO_DEG );
- index = c->exists(p);
- if ( index < 0 ) {
- FG_LOG( FG_TERRAIN, FG_WARN, "Tile not found" );
- return 0.0;
- }
-
- t = c->get_tile(index);
+ int x, y;
- scenery.next_center = t->center;
-
- FG_LOG( FG_TERRAIN, FG_DEBUG,
- "Pos = (" << lon * RAD_TO_DEG << ", " << lat * RAD_TO_DEG
- << ") Current bucket = " << p
- << " Index = " << p.gen_index_str() );
-
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Tile center " << t->center
- << " bounding radius = " << t->bounding_radius );
-
- // calculate tile offset
- // x = (t->offset.x = t->center.x - scenery.center.x);
- // y = (t->offset.y = t->center.y - scenery.center.y);
- // z = (t->offset.z = t->center.z - scenery.center.z);
+ // schedule next ring of 8 tiles
+ 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 );
+ }
+ }
+ }
- // calc current terrain elevation calculate distance from
- // vertical tangent line at current position to center of
- // tile.
-
- /* printf("distance squared = %.2f, bounding radius = %.2f\n",
- point_line_dist_squared(&(t->offset), &(v->view_pos),
- v->local_up), t->bounding_radius); */
-
- dist = point_line_dist_squared( t->center, abs_view_pos, local_up );
- FG_LOG( FG_TERRAIN, FG_DEBUG, "(gross check) dist squared = " << dist );
-
- if ( dist < FG_SQUARE(t->bounding_radius) ) {
-
- // traverse fragment list for tile
- FGTileEntry::FragmentIterator current = t->begin();
- FGTileEntry::FragmentIterator last = t->end();
-
- for ( ; current != last; ++current ) {
- frag_ptr = &(*current);
- /* printf("distance squared = %.2f, bounding radius = %.2f\n",
- point_line_dist_squared( &(frag_ptr->center),
- &abs_view_pos), local_up),
- frag_ptr->bounding_radius); */
-
- dist = point_line_dist_squared( frag_ptr->center,
- abs_view_pos,
- local_up);
- if ( dist <= FG_SQUARE(frag_ptr->bounding_radius) ) {
- if ( frag_ptr->intersect( abs_view_pos,
- earth_center, 0, result ) ) {
- FG_LOG( FG_TERRAIN, FG_DEBUG, "intersection point " <<
- result );
- // compute geocentric coordinates of tile center
- Point3D pp = fgCartToPolar3d(result);
- FG_LOG( FG_TERRAIN, FG_DEBUG, " polar form = " << pp );
- // convert to geodetic coordinates
- fgGeocToGeod(pp.lat(), pp.radius(), &lat_geod,
- &alt, &sea_level_r);
-
- // printf("alt = %.2f\n", alt);
- // exit since we found an intersection
- if ( alt > -9999.0 ) {
- // printf("returning alt\n");
- return alt;
- } else {
- // printf("returning 0\n");
- return 0.0;
- }
- }
+ // schedule remaining tiles
+ 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 );
}
}
}
-
- FG_LOG( FG_TERRAIN, FG_INFO, "(old) no terrain intersection found" );
-
- return 0.0;
}
-// given the current lon/lat, fill in the array of local chunks. If
-// the chunk isn't already in the cache, then read it from disk.
-int FGTileMgr::update( void ) {
- FGTileCache *c;
- FGInterface *f;
- FGBucket p2;
- static FGBucket p_last(false);
- static double last_lon = -1000.0; // in degrees
- static double last_lat = -1000.0; // in degrees
- int tile_diameter;
- int i, j, dw, dh;
-
- c = &global_tile_cache;
- f = current_aircraft.fdm_state;
-
- tile_diameter = current_options.get_tile_diameter();
-
- FGBucket p1( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG );
- dw = tile_diameter / 2;
- dh = tile_diameter / 2;
-
- if ( (p1 == p_last) && (state == Running) ) {
- // same bucket as last time
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Same bucket as last time" );
- } else if ( (state == Start) || (state == Inited) ) {
- state = Running;
+void FGTileMgr::initialize_queue()
+{
+ // First time through or we have teleported, initialize the
+ // system and load all relavant tiles
- // First time through or we have teleporte, initialize the
- // system and load all relavant tiles
+ SG_LOG( SG_TERRAIN, SG_INFO, "Updating Tile list for " << current_bucket );
+ // cout << "tile cache size = " << tile_cache.get_size() << endl;
- FG_LOG( FG_TERRAIN, FG_INFO, "Updating Tile list for " << p1 );
- FG_LOG( FG_TERRAIN, FG_INFO, " First time through ... " );
- FG_LOG( FG_TERRAIN, FG_INFO, " Updating Tile list for " << p1 );
- FG_LOG( FG_TERRAIN, FG_INFO, " Loading "
- << tile_diameter * tile_diameter << " tiles" );
+ // wipe/initialize tile cache
+ // tile_cache.init();
+ previous_bucket.make_bad();
- // wipe/initialize tile cache
- c->init();
- p_last.make_bad();
+ // build the local area list and schedule tiles for loading
- // build the local area list and schedule tiles for loading
+ // start with the center tile and work out in concentric
+ // "rings"
- // start with the center tile and work out in concentric
- // "rings"
+ schedule_needed();
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- 0, 0 );
- sched_tile( p2, &tiles[(dh*tile_diameter) + dw]);
+ // do we really want to lose this? CLO
+#if 0
+ // Now force a load of the center tile and inner ring so we
+ // have something to see in our first frame.
+ int i;
+ for ( i = 0; i < 9; ++i ) {
+ if ( load_queue.size() ) {
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "Load queue not empty, loading a tile" );
+
+ SGBucket pending = load_queue.front();
+ load_queue.pop_front();
+ load_tile( pending );
+ }
+ }
+#endif
+}
- for ( i = 3; i <= tile_diameter; i = i + 2 ) {
- int span = i / 2;
- // bottom row
- for ( j = -span; j <= span; ++j ) {
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- j, -span );
- sched_tile( p2, &tiles[((dh-span)*tile_diameter) + dw+j]);
- }
+// 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 ) {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "FGTileMgr::update()" );
- // top row
- for ( j = -span; j <= span; ++j ) {
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- j, span );
- sched_tile( p2, &tiles[((dh+span)*tile_diameter) + dw+j]);
- }
+ // FGInterface *f = current_aircraft.fdm_state;
- // middle rows
- for ( j = -span + 1; j <= span - 1; ++j ) {
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- -span, j );
- sched_tile( p2, &tiles[((dh+j)*tile_diameter) + dw-span]);
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- span, j );
- sched_tile( p2, &tiles[((dh+j)*tile_diameter) + dw+span]);
- }
+ // lonlat for this update
+ // longitude = f->get_Longitude() * SGD_RADIANS_TO_DEGREES;
+ // latitude = f->get_Latitude() * SGD_RADIANS_TO_DEGREES;
+ longitude = lon;
+ latitude = lat;
+ // SG_LOG( SG_TERRAIN, SG_DEBUG, "lon "<< lonlat[LON] <<
+ // " lat " << lonlat[LAT] );
- }
-
- /* for ( j = 0; j < tile_diameter; j++ ) {
- for ( i = 0; i < tile_diameter; i++ ) {
- // fgBucketOffset(&p1, &p2, i - dw, j - dh);
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- i - dw, j -dh );
- sched_tile( p2, &tiles[(j*tile_diameter) + i]);
- }
- } */
-
- // 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_INFO,
- "Load queue not empty, loading a tile" );
-
- FGLoadRec pending = load_queue.front();
- load_queue.pop_front();
- load_tile( pending.b, pending.index );
- }
- }
+ 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 );
+ scenery.next_center = current_tile->center;
} else {
- // We've moved to a new bucket, we need to scroll our
- // structures, and load in the new tiles
-
- // CURRENTLY THIS ASSUMES WE CAN ONLY MOVE TO ADJACENT TILES.
- // AT ULTRA HIGH SPEEDS THIS ASSUMPTION MAY NOT BE VALID IF
- // THE AIRCRAFT CAN SKIP A TILE IN A SINGLE ITERATION.
-
- FG_LOG( FG_TERRAIN, FG_INFO, "Updating Tile list for " << p1 );
-
- if ( (p1.get_lon() > p_last.get_lon()) ||
- ( (p1.get_lon() == p_last.get_lon()) && (p1.get_x() > p_last.get_x()) ) ) {
- FG_LOG( FG_TERRAIN, FG_INFO,
- " Loading " << tile_diameter << "tiles" );
- for ( j = 0; j < tile_diameter; j++ ) {
- // scrolling East
- for ( i = 0; i < tile_diameter - 1; i++ ) {
- tiles[(j*tile_diameter) + i] =
- tiles[(j*tile_diameter) + i + 1];
- }
- // load in new column
- // fgBucketOffset(&p_last, &p2, dw + 1, j - dh);
- p2 = fgBucketOffset( last_lon, last_lat, dw + 1, j - dh );
- sched_tile( p2, &tiles[(j*tile_diameter) +
- tile_diameter - 1]);
- }
- } else if ( (p1.get_lon() < p_last.get_lon()) ||
- ( (p1.get_lon() == p_last.get_lon()) && (p1.get_x() < p_last.get_x()) ) ) {
- FG_LOG( FG_TERRAIN, FG_INFO,
- " Loading " << tile_diameter << "tiles" );
- for ( j = 0; j < tile_diameter; j++ ) {
- // scrolling West
- for ( i = tile_diameter - 1; i > 0; i-- ) {
- tiles[(j*tile_diameter) + i] =
- tiles[(j*tile_diameter) + i - 1];
- }
- // load in new column
- // fgBucketOffset(&p_last, &p2, -dw - 1, j - dh);
- p2 = fgBucketOffset( last_lon, last_lat, -dw - 1, j - dh );
- sched_tile( p2, &tiles[(j*tile_diameter) + 0]);
- }
- }
+ SG_LOG( SG_TERRAIN, SG_WARN, "Tile not found (Ok if initializing)" );
+ }
- if ( (p1.get_lat() > p_last.get_lat()) ||
- ( (p1.get_lat() == p_last.get_lat()) && (p1.get_y() > p_last.get_y()) ) ) {
- FG_LOG( FG_TERRAIN, FG_INFO,
- " Loading " << tile_diameter << "tiles" );
- for ( i = 0; i < tile_diameter; i++ ) {
- // scrolling North
- for ( j = 0; j < tile_diameter - 1; j++ ) {
- tiles[(j * tile_diameter) + i] =
- tiles[((j+1) * tile_diameter) + i];
- }
- // load in new column
- // fgBucketOffset(&p_last, &p2, i - dw, dh + 1);
- p2 = fgBucketOffset( last_lon, last_lat, i - dw, dh + 1);
- sched_tile( p2, &tiles[((tile_diameter-1) *
- tile_diameter) + i]);
- }
- } else if ( (p1.get_lat() < p_last.get_lat()) ||
- ( (p1.get_lat() == p_last.get_lat()) && (p1.get_y() < p_last.get_y()) ) ) {
- FG_LOG( FG_TERRAIN, FG_INFO,
- " Loading " << tile_diameter << "tiles" );
- for ( i = 0; i < tile_diameter; i++ ) {
- // scrolling South
- for ( j = tile_diameter - 1; j > 0; j-- ) {
- tiles[(j * tile_diameter) + i] =
- tiles[((j-1) * tile_diameter) + i];
- }
- // load in new column
- // fgBucketOffset(&p_last, &p2, i - dw, -dh - 1);
- p2 = fgBucketOffset( last_lon, last_lat, i - dw, -dh - 1);
- sched_tile( p2, &tiles[0 + i]);
- }
+ 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();
}
+ } else if ( state == Start || state == Inited ) {
+ initialize_queue();
+ state = Running;
}
- if ( load_queue.size() ) {
- FG_LOG( FG_TERRAIN, FG_INFO, "Load queue not empty, loading a tile" );
-
- FGLoadRec pending = load_queue.front();
- load_queue.pop_front();
- load_tile( pending.b, pending.index );
+ // load the next tile in the load queue (or authorize the next
+ // load in the case of the threaded tile pager)
+ 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;
+ // load the next tile in the queue
+#ifdef ENABLE_THREADS
+ FGDeferredModel* dm = model_queue.pop();
+#else
+ FGDeferredModel* dm = model_queue.front();
+ 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();
+
+ delete dm;
}
- // find our current elevation (feed in the current bucket to save work)
- Point3D geod_pos = Point3D( f->get_Longitude(), f->get_Latitude(), 0.0);
- Point3D tmp_abs_view_pos = fgGeodToCart(geod_pos);
-
- scenery.cur_elev =
- current_elev( f->get_Longitude(), f->get_Latitude(), tmp_abs_view_pos );
-
- p_last = p1;
- last_lon = f->get_Longitude() * RAD_TO_DEG;
- last_lat = f->get_Latitude() * RAD_TO_DEG;
-
- return 1;
-}
-
+ // cout << "current elevation (ssg) == " << scenery.cur_elev << endl;
-// Calculate if point/radius is inside view frustum
-static int viewable( const Point3D& cp, double radius ) {
- int viewable = 1; // start by assuming it's viewable
- double x1, y1;
+ previous_bucket = current_bucket;
+ last_longitude = longitude;
+ last_latitude = latitude;
- /********************************/
-#if defined( USE_FAST_FOV_CLIP ) // views.hxx
- /********************************/
-
- MAT3vec eye;
- double *mat;
- double x, y, z;
+ // 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();
- x = cp.x();
- y = cp.y();
- z = cp.z();
-
- mat = (double *)(current_view.get_WORLD_TO_EYE());
-
- eye[2] = x*mat[2] + y*mat[6] + z*mat[10] + mat[14];
-
- // Check near and far clip plane
- if( ( eye[2] > radius ) ||
- ( eye[2] + radius + current_weather.get_visibility() < 0) )
- {
- return(0);
+ if ( !attach_queue.empty() ) {
+#ifdef ENABLE_THREADS
+ FGTileEntry* e = attach_queue.pop();
+#else
+ FGTileEntry* e = attach_queue.front();
+ attach_queue.pop();
+#endif
+ e->add_ssg_nodes( terrain, ground );
+ // cout << "Adding ssg nodes for "
}
-
- eye[0] = (x*mat[0] + y*mat[4] + z*mat[8] + mat[12])
- * current_view.get_slope_x();
-
- // check right and left clip plane (from eye perspective)
- x1 = radius * current_view.get_fov_x_clip();
- if( (eye[2] > -(eye[0]+x1)) || (eye[2] > (eye[0]-x1)) )
+ }
+ counter_hack = (counter_hack + 1) % 5;
+ sgdVec3 sc;
+ sgdSetVec3( sc, scenery.center[0], scenery.center[1], scenery.center[2] );
+
+ if ( scenery.center == Point3D(0.0) ) {
+ // initializing
+ cout << "initializing scenery current elevation ... " << endl;
+ sgdVec3 tmp_abs_view_pos;
+
+ Point3D geod_pos = Point3D( longitude * SGD_DEGREES_TO_RADIANS,
+ latitude * SGD_DEGREES_TO_RADIANS,
+ 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();
+
+ double tmp_elev;
+ if ( fgCurrentElev(tmp_abs_view_pos, sc, &hit_list,
+ &tmp_elev, &scenery.cur_radius, scenery.cur_normal) )
{
- return(0);
+ scenery.cur_elev = tmp_elev;
+ } else {
+ scenery.cur_elev = 0.0;
}
-
- eye[1] = (x*mat[1] + y*mat[5] + z*mat[9] + mat[13])
- * current_view.get_slope_y();
-
- // check bottom and top clip plane (from eye perspective)
- y1 = radius * current_view.get_fov_y_clip();
- if( (eye[2] > -(eye[1]+y1)) || (eye[2] > (eye[1]-y1)) )
+ 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 ( fgCurrentElev(globals->get_current_view()->get_abs_view_pos(),
+ sc, &hit_list,
+ &tmp_elev, &scenery.cur_radius, scenery.cur_normal) )
{
- return(0);
- }
-
- /********************************/
-#else // DO NOT USE_FAST_FOV_CLIP
- /********************************/
-
- fgVIEW *v;
- MAT3hvec world, eye;
- double x0, slope;
-
- v = ¤t_view;
-
- MAT3_SET_HVEC(world, cp->x, cp->y, cp->z, 1.0);
- // MAT3mult_vec(eye, world, v->WORLD_TO_EYE);
- // printf( "\nworld -> eye = %.2f %.2f %.2f radius = %.2f\n",
- // eye[0], eye[1], eye[2], radius);
-
- // Use lazy evaluation for calculating eye hvec.
-#define vec world
-#define mat v->WORLD_TO_EYE
- eye[2] = vec[0]*mat[0][2]+vec[1]*mat[1][2]+vec[2]*mat[2][2]+mat[3][2];
-
- // Check near clip plane
- if ( eye[2] > radius ) {
- return(0);
- }
-
- // Check far clip plane
- if ( eye[2] + radius < -current_weather.get_visibility() ) {
- return(0);
- }
-
- // check right clip plane (from eye perspective)
- // y = m * (x - x0) = equation of a line intercepting X axis at x0
- x1 = v->cos_fov_x * radius;
- y1 = v->sin_fov_x * radius;
- slope = v->slope_x;
- eye[0] = vec[0]*mat[0][0]+vec[1]*mat[1][0]+vec[2]*mat[2][0]+mat[3][0];
-
- if ( eye[2] > ((slope * (eye[0] - x1)) + y1) ) {
- return( false );
- }
-
- // check left clip plane (from eye perspective)
- if ( eye[2] > -((slope * (eye[0] + x1)) - y1) ) {
- return( false );
- }
-
- // check bottom clip plane (from eye perspective)
- x1 = -(v->cos_fov_y) * radius;
- y1 = v->sin_fov_y * radius;
- slope = v->slope_y;
- eye[1] = vec[0]*mat[0][1]+vec[1]*mat[1][1]+vec[2]*mat[2][1]+mat[3][1];
-#undef vec
-#undef mat
-
- if ( eye[2] > ((slope * (eye[1] - x1)) + y1) ) {
- return( false );
- }
-
- // check top clip plane (from eye perspective)
- if ( eye[2] > -((slope * (eye[1] + x1)) - y1) ) {
- return( false );
+ scenery.cur_elev = tmp_elev;
+ } else {
+ scenery.cur_elev = 0.0;
+ }
}
-#endif // defined( USE_FAST_FOV_CLIP )
-
- return(viewable);
-}
-
-
-// NEW
-
-// inrange() IS THIS POINT WITHIN POSSIBLE VIEWING RANGE ?
-// calculate distance from vertical tangent line at
-// current position to center of object.
-// this is equivalent to
-// dist = point_line_dist_squared( &(t->center), &(v->abs_view_pos),
-// v->local_up );
-// if ( dist < FG_SQUARE(t->bounding_radius) ) {
-//
-// the compiler should inline this for us
-
-static int
-inrange( const double radius, const Point3D& center, const Point3D& vp,
- const MAT3vec up)
-{
- MAT3vec u, u1, v;
- // double tmp;
-
- // u = p - p0
- u[0] = center.x() - vp.x();
- u[1] = center.y() - vp.y();
- u[2] = center.z() - vp.z();
-
- // calculate the projection, u1, of u along d.
- // u1 = ( dot_prod(u, d) / dot_prod(d, d) ) * d;
-
- MAT3_SCALE_VEC(u1, up,
- (MAT3_DOT_PRODUCT(u, up) / MAT3_DOT_PRODUCT(up, up)) );
-
- // v = u - u1 = vector from closest point on line, p1, to the
- // original point, p.
- MAT3_SUB_VEC(v, u, u1);
-
- return( FG_SQUARE(radius) >= MAT3_DOT_PRODUCT(v, v));
-}
-
-
-// NEW for legibility
-
-// update this tile's geometry for current view
-// The Compiler should inline this
-static void
-update_tile_geometry( FGTileEntry *t, GLdouble *MODEL_VIEW)
-{
- GLfloat *m;
- double x, y, z;
-
- // calculate tile offset
- t->offset = t->center - scenery.center;
-
- x = t->offset.x();
- y = t->offset.y();
- z = t->offset.z();
-
- m = t->model_view;
-
- // Calculate the model_view transformation matrix for this tile
- FG_MEM_COPY( m, MODEL_VIEW, 16*sizeof(GLdouble) );
-
- // This is equivalent to doing a glTranslatef(x, y, z);
- m[12] += (m[0]*x + m[4]*y + m[8] *z);
- m[13] += (m[1]*x + m[5]*y + m[9] *z);
- m[14] += (m[2]*x + m[6]*y + m[10]*z);
- // m[15] += (m[3]*x + m[7]*y + m[11]*z);
- // m[3] m7[] m[11] are 0.0 see LookAt() in views.cxx
- // so m[15] is unchanged
+ return 1;
}
-// Prepare the ssg nodes ... for each tile, set it's proper
-// transform and update it's range selector based on current
-// visibilty
-void FGTileMgr::prep_ssg_nodes( void ) {
- FGTileEntry *t;
-
- int tile_diameter = current_options.get_tile_diameter();
+void FGTileMgr::prep_ssg_nodes() {
+ float vis = 0.0;
- float ranges[2];
- ranges[0] = 0.0f;
- ranges[1] = current_weather.get_visibility();
+#ifndef FG_OLD_WEATHER
+ if ( WeatherDatabase ) {
+ vis = WeatherDatabase->getWeatherVisibility();
+ } else {
+ vis = 16000;
+ }
+#else
+ vis = current_weather.get_visibility();
+#endif
+ // cout << "visibility = " << vis << endl;
// traverse the potentially viewable tile list and update range
// selector and transform
- for ( int i = 0; i < (tile_diameter * tile_diameter); i++ ) {
- int index = tiles[i];
- t = global_tile_cache.get_tile(index);
-
- if ( t->is_loaded() ) {
- // set range selector (LOD trick)
- t->range_ptr->setRanges( ranges, 2 );
-
- // calculate tile offset
- t->SetOffset( scenery.center );
-
- // calculate ssg transform
- sgCoord sgcoord;
- sgSetCoord( &sgcoord,
- t->offset.x(), t->offset.y(), t->offset.z(),
- 0.0, 0.0, 0.0 );
- t->branch_ptr->setTransform( &sgcoord );
- }
- }
-}
-
-// Render the local tiles
-void FGTileMgr::render( void ) {
- FGInterface *f;
- FGTileCache *c;
- FGTileEntry *t;
- FGView *v;
- Point3D frag_offset;
- fgFRAGMENT *frag_ptr;
- FGMaterialSlot *mtl_ptr;
- int i;
- int index;
- int culled = 0;
- int drawn = 0;
-
- c = &global_tile_cache;
- f = current_aircraft.fdm_state;
- v = ¤t_view;
-
- int tile_diameter = current_options.get_tile_diameter();
-
- // moved to fgTileMgrUpdate, right after we check if we need to
- // load additional tiles:
- // scenery.cur_elev = fgTileMgrCurElev( FG_Longitude, FG_Latitude,
- // v->abs_view_pos );
-
- // initialize the transient per-material fragment lists
- material_mgr.init_transient_material_lists();
-
- // Pass 1
- // traverse the potentially viewable tile list
- for ( i = 0; i < (tile_diameter * tile_diameter); i++ ) {
- index = tiles[i];
- // fgPrintf( FG_TERRAIN, FG_DEBUG, "Index = %d\n", index);
- t = c->get_tile(index);
-
- if ( t->is_loaded() ) {
-
- // calculate tile offset
- t->SetOffset( scenery.center );
-
- // Course (tile based) culling
- if ( viewable(t->offset, t->bounding_radius) ) {
- // at least a portion of this tile could be viewable
-
- // Calculate the model_view transformation matrix for this tile
- // This is equivalent to doing a glTranslatef(x, y, z);
- t->update_view_matrix( v->get_MODEL_VIEW() );
-
- // xglPushMatrix();
- // xglTranslatef(t->offset.x, t->offset.y, t->offset.z);
-
- // traverse fragment list for tile
- FGTileEntry::FragmentIterator current = t->begin();
- FGTileEntry::FragmentIterator last = t->end();
-
- for ( ; current != last; ++current ) {
- frag_ptr = &(*current);
-
- if ( frag_ptr->display_list >= 0 ) {
- // Fine (fragment based) culling
- frag_offset = frag_ptr->center - scenery.center;
-
- if ( viewable(frag_offset,
- frag_ptr->bounding_radius*2) )
- {
- // add to transient per-material property
- // fragment list
-
- // frag_ptr->tile_offset.x = t->offset.x;
- // frag_ptr->tile_offset.y = t->offset.y;
- // frag_ptr->tile_offset.z = t->offset.z;
-
- mtl_ptr = frag_ptr->material_ptr;
- // printf(" lookup = %s\n", mtl_ptr->texture_name);
- if ( ! mtl_ptr->append_sort_list( frag_ptr ) ) {
- FG_LOG( FG_TERRAIN, FG_ALERT,
- "Overran material sorting array" );
- }
-
- // xglCallList(frag_ptr->display_list);
- drawn++;
- } else {
- // printf("Culled a fragment %.2f %.2f %.2f %.2f\n",
- // frag_ptr->center.x, frag_ptr->center.y,
- // frag_ptr->center.z,
- // frag_ptr->bounding_radius);
- culled++;
- }
- }
- }
-
- // xglPopMatrix();
- } else {
- culled += t->fragment_list.size();
- }
- } else {
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Skipping a not yet loaded tile" );
- }
- }
-
- if ( (drawn + culled) > 0 ) {
- v->set_vfc_ratio( (double)culled / (double)(drawn + culled) );
- } else {
- v->set_vfc_ratio( 0.0 );
- }
- // printf("drawn = %d culled = %d saved = %.2f\n", drawn, culled,
- // v->vfc_ratio);
-
- // Pass 2
- // traverse the transient per-material fragment lists and render
- // out all fragments for each material property.
- xglPushMatrix();
- material_mgr.render_fragments();
- xglPopMatrix();
+ FGTileEntry *e;
+ tile_cache.reset_traversal();
+
+ while ( ! tile_cache.at_end() ) {
+ // cout << "processing a tile" << endl;
+ if ( (e = tile_cache.get_current()) ) {
+ e->prep_ssg_node( scenery.center, vis);
+ } else {
+ cout << "warning ... empty tile in cache" << endl;
+ }
+ tile_cache.next();
+ }
}
projects / flightgear.git / blobdiff