//
// 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 <algorithm>
+#include <functional>
-#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 <Objects/obj.hxx>
-#include <Weather/weather.hxx>
+#include <osgViewer/Viewer>
-#include "scenery.hxx"
-#include "tilecache.hxx"
-#include "tileentry.hxx"
-#include "tilemgr.hxx"
+#include <simgear/constants.h>
+#include <simgear/debug/logstream.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 <Main/fg_props.hxx>
+#include <Main/renderer.hxx>
+#include <Main/viewer.hxx>
+#include <Scripting/NasalSys.hxx>
-// to test clipping speedup in fgTileMgrRender()
-#if defined ( USE_FAST_FOV_CLIP )
-// #define TEST_FOV_CLIP
-// #define TEST_ELEV
-#endif
-
-
-extern ssgRoot *scene;
-
-
-// the tile manager
-FGTileMgr global_tile_mgr;
+#include "scenery.hxx"
+#include "SceneryPager.hxx"
+#include "tilemgr.hxx"
+using std::for_each;
+using flightgear::SceneryPager;
+using simgear::SGModelLib;
+using simgear::TileEntry;
+using simgear::TileCache;
-// Constructor
-FGTileMgr::FGTileMgr ( void ):
- state( Start )
+FGTileMgr::FGTileMgr():
+ state( Start ),
+ vis( 16000 )
{
}
-// Destructor
-FGTileMgr::~FGTileMgr ( void ) {
+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( 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();
- }
+ _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);
+
+ tile_cache.init();
state = Inited;
- return 1;
-}
+ previous_bucket.make_bad();
+ current_bucket.make_bad();
+ longitude = latitude = -1000.0;
-// schedule a tile for loading
-static void disable_tile( int cache_index ) {
- // see if tile already exists in the cache
- cout << "DISABLING CACHE ENTRY = " << cache_index << endl;
- FGTileEntry *t = global_tile_cache.get_tile( cache_index );
- t->ssg_disable();
+ return 1;
}
-
// schedule a tile for loading
-int FGTileMgr::sched_tile( const FGBucket& b ) {
+void FGTileMgr::sched_tile( const SGBucket& b, const bool is_inner_ring ) {
// see if tile already exists in the cache
- int cache_index = global_tile_cache.exists( b );
-
- if ( cache_index >= 0 ) {
- // tile exists in cache, reenable it.
- cout << "REENABLING DISABLED TILE" << endl;
- FGTileEntry *t = global_tile_cache.get_tile( cache_index );
- t->select_ptr->select( 1 );
- t->mark_loaded();
+ 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;
+ }
+ }
+
+ // create a new entry
+ TileEntry *e = new TileEntry( b );
+
+ // 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 {
- // find the next available cache entry and mark it as
- // scheduled
- cache_index = global_tile_cache.next_avail();
- FGTileEntry *t = global_tile_cache.get_tile( cache_index );
- t->mark_scheduled_for_use();
-
- // register a load request
- FGLoadRec request;
- request.b = b;
- request.cache_index = cache_index;
- load_queue.push_back( request );
+ t->set_inner_ring( is_inner_ring );
}
-
- return cache_index;
}
-// load a tile
-void FGTileMgr::load_tile( const FGBucket& b, int cache_index) {
+// 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);
+ }
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Loading tile " << b );
-
- global_tile_cache.fill_in(cache_index, b);
+ SG_LOG( SG_TERRAIN, SG_INFO,
+ "scheduling needed tiles for " << longitude << " " << latitude );
+
+ // vis = fgGetDouble("/environment/visibility-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 ( yrange < 1 ) { yrange = 1; }
+
+ // 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, true );
+
+ int x, y;
+
+ // 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, true );
+ }
+ }
+ }
- FG_LOG( FG_TERRAIN, FG_DEBUG, "Loaded for cache index: " << cache_index );
+ // 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, false );
+ }
+ }
+ }
}
-// Calculate shortest distance from point to line
-static double point_line_dist_squared( const Point3D& tc, const Point3D& vp,
- MAT3vec d )
+void FGTileMgr::initialize_queue()
{
- MAT3vec p, p0;
+ // First time through or we have teleported, initialize the
+ // system and load all relavant tiles
- p[0] = tc.x(); p[1] = tc.y(); p[2] = tc.z();
- p0[0] = vp.x(); p0[1] = vp.y(); p0[2] = vp.z();
-
- return fgPointLineSquared(p, p0, d);
-}
+ 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
+ // tile_cache.init();
+ previous_bucket.make_bad();
-// 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;
- }
+ // build the local area list and schedule tiles for loading
- t = global_tile_cache.get_tile(index);
-
- 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;
- }
- }
- }
- }
- }
+ // start with the center tile and work out in concentric
+ // "rings"
- FG_LOG( FG_TERRAIN, FG_INFO, "(new) no terrain intersection found" );
-
- return 0.0;
+ double visibility_meters = fgGetDouble("/environment/visibility-m");
+ schedule_needed(visibility_meters, current_bucket);
}
-
-// 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);
-
- 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);
-
- // 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;
- }
- }
- }
- }
+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());
}
-
- FG_LOG( FG_TERRAIN, FG_INFO, "(old) no terrain intersection found" );
-
- return 0.0;
+ return result;
}
-
-// 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.
-double
-FGTileMgr::current_elev_ssg( const Point3D& abs_view_pos,
- const Point3D& view_pos )
+// Helper class for STL fun
+class TileLoad : public std::unary_function<TileCache::tile_map::value_type,
+ void>
{
- ssgHit *results ;
-
- // cout << "view pos = " << view_pos << endl;
- // cout << "abs view pos = " << abs_view_pos << endl;
-
- sgMat4 m;
- sgMakeTransMat4( m, view_pos.x(), view_pos.y(), view_pos.z() );
-
- sgVec3 s;
- sgSetVec3(s, -abs_view_pos.x(), -abs_view_pos.y(), -abs_view_pos.z() );
-
- int num_hits = ssgLOS ( scene, s, m, &results ) ;
-
- for ( int i = 0 ; i < num_hits ; i++ ) {
- ssgHit *h = &(results [ i ]) ;
- cout << "got a hit!" << endl;
- /* Do something with 'h' */
+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);
+ }
}
-
- FG_LOG( FG_TERRAIN, FG_INFO, "(ssg) no terrain intersection found" );
-
- return 0.0;
+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, 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;
-
- // 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 " << 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
- c->init();
- p_last.make_bad();
-
- // build the local area list and schedule tiles for loading
-
- // start with the center tile and work out in concentric
- // "rings"
-
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- 0, 0 );
- sched_tile( p2 );
-
- 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 );
- }
-
- // 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 );
- }
-
- // 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 );
- p2 = fgBucketOffset( f->get_Longitude() * RAD_TO_DEG,
- f->get_Latitude() * RAD_TO_DEG,
- span, j );
- sched_tile( p2 );
- }
-
- }
-
- /* 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 );
- }
- } */
-
- // 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.cache_index );
- }
- }
-
- } else {
- // We've moved to a new bucket, we need to scroll our
- // structures, and load in the new tiles
-
-#if 0
- // make sure load queue is flushed before doing shift
- while ( load_queue.size() ) {
- FG_LOG( FG_TERRAIN, FG_INFO,
- "Load queue not empty, flushing queue before tile shift." );
-
- FGLoadRec pending = load_queue.front();
- load_queue.pop_front();
- load_tile( pending.b, pending.index );
- }
-#endif
+// 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 visibility_meters )
+{
+ SGVec3d viewPos = globals->get_current_view()->get_view_pos();
+ return update(SGGeod::fromCart(viewPos), visibility_meters);
+}
- // 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,
- " (East) Loading " << tile_diameter << " tiles" );
- for ( j = 0; j < tile_diameter; j++ ) {
- // scrolling East
- // schedule new column
- p2 = fgBucketOffset( last_lon, last_lat, dw + 1, j - dh );
- sched_tile( p2 );
- }
- } 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,
- " (West) Loading " << tile_diameter << " tiles" );
- for ( j = 0; j < tile_diameter; j++ ) {
- // scrolling West
- // schedule new column
- p2 = fgBucketOffset( last_lon, last_lat, -dw - 1, j - dh );
- sched_tile( p2 );
- }
- }
-
- 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,
- " (North) Loading " << tile_diameter << " tiles" );
- for ( i = 0; i < tile_diameter; i++ ) {
- // scrolling North
- // schedule new row
- p2 = fgBucketOffset( last_lon, last_lat, i - dw, dh + 1);
- sched_tile( p2 );
- }
- } 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,
- " (South) Loading " << tile_diameter << " tiles" );
- for ( i = 0; i < tile_diameter; i++ ) {
- // scrolling South
- // schedule new row
- p2 = fgBucketOffset( last_lon, last_lat, i - dw, -dh - 1);
- sched_tile( p2 );
- }
- }
+int FGTileMgr::update( const SGGeod& location, double visibility_meters)
+{
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "FGTileMgr::update()" );
+
+ longitude = location.getLongitudeDeg();
+ latitude = location.getLatitudeDeg();
+
+ // SG_LOG( SG_TERRAIN, SG_DEBUG, "FGTileMgr::update() for "
+ // << longitude << " " << latatitude );
+
+ 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 ) {
+ 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 ) {
+ 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);
+ }
}
- 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.cache_index );
- }
+ update_queues();
- // 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 );
- // cout << "current elevation == " << scenery.cur_elev << endl;
- // double junk = current_elev_ssg( current_view.abs_view_pos,
- // current_view.view_pos );
- // cout << "current elevation (ssg) == " <<
-
- p_last = p1;
- last_lon = f->get_Longitude() * RAD_TO_DEG;
- last_lat = f->get_Latitude() * RAD_TO_DEG;
+ // save bucket...
+ previous_bucket = current_bucket;
return 1;
}
+void FGTileMgr::prep_ssg_nodes(float vis) {
-// NEW
+ // traverse the potentially viewable tile list and update range
+ // selector and transform
-// 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
+ TileEntry *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(vis);
+ } else {
+ SG_LOG(SG_INPUT, SG_ALERT, "warning ... empty tile in cache");
+ }
+ tile_cache.next();
+ }
+}
-static int
-inrange( const double radius, const Point3D& center, const Point3D& vp,
- const MAT3vec up)
+bool FGTileMgr::scenery_available(const SGGeod& position, double range_m)
{
- 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));
+ 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;
+ }
+ }
+ }
-// NEW for legibility
+ // Survived all tests.
+ return true;
+}
-// update this tile's geometry for current view
-// The Compiler should inline this
-static void
-update_tile_geometry( FGTileEntry *t, GLdouble *MODEL_VIEW)
+namespace
+{
+struct IsTileLoaded :
+ public std::unary_function<TileCache::tile_map::value_type, bool>
{
- 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
+ bool operator()(const TileCache::tile_map::value_type& tilePair) const
+ {
+ return tilePair.second->is_loaded();
+ }
+};
}
-
-// 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;
-
- float ranges[2];
- ranges[0] = 0.0f;
-
- // traverse the potentially viewable tile list and update range
- // selector and transform
- for ( int i = 0; i < (int)global_tile_cache.get_size(); i++ ) {
- t = global_tile_cache.get_tile( i );
-
- if ( t->is_loaded() ) {
- // set range selector (LOD trick) to be distance to center
- // of tile + bounding radius
- ranges[1] = current_weather.get_visibility() + t->bounding_radius;
- 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->transform_ptr->setTransform( &sgcoord );
- }
- }
+bool FGTileMgr::isSceneryLoaded()
+{
+ return (std::find_if(tile_cache.begin(), tile_cache.end(),
+ std::not1(IsTileLoaded()))
+ == tile_cache.end());
}
projects / flightgear.git / blobdiff