//
// 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.
//
// $Id$
#ifndef _TILEMGR_HXX
#define _TILEMGR_HXX
-
-#ifndef __cplusplus
-# error This library requires C++
-#endif
-
#include <simgear/compiler.h>
-#include <queue>
-
-#include <plib/ssg.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/bucket/newbucket.hxx>
-#ifdef ENABLE_THREADS
-# include <simgear/threads/SGQueue.hxx>
-#endif // ENABLE_THREADS
+#include "SceneryPager.hxx"
+#include "tileentry.hxx"
+#include "tilecache.hxx"
-#include "FGTileLoader.hxx"
-#include "hitlist.hxx"
-#include "newcache.hxx"
+namespace osg
+{
+class Node;
+}
-#if defined(USE_MEM) || defined(WIN32)
-# define FG_MEM_COPY(to,from,n) memcpy(to, from, n)
-#else
-# define FG_MEM_COPY(to,from,n) bcopy(from, to, n)
-#endif
+namespace simgear
+{
+class SGTerraSync;
+class SGReaderWriterOptions;
+}
-
-// forward declaration
-class FGTileEntry;
-class FGDeferredModel;
-
-
-class FGTileMgr {
+class FGTileMgr : public SGSubsystem {
private:
// Tile loading state
enum load_state {
- Start = 0,
- Inited = 1,
- Running = 2
+ Start = 0,
+ Inited = 1,
+ Running = 2
};
- load_state state;
-
- // initialize the cache
- void initialize_queue();
+ load_state state, last_state;
- // forced emptying of the queue. This is necessay to keep
- // bookeeping straight for the tile_cache -- which actually
- // handles all the (de)allocations
- void destroy_queue();
-
- // schedule a tile for loading
- void sched_tile( const SGBucket& b );
+ // schedule a tile for loading, returns true when tile is already loaded
+ bool sched_tile( const SGBucket& b, double priority,bool current_view, double request_time);
// schedule a needed buckets for loading
- void schedule_needed();
-
- // see comment at prep_ssg_nodes()
- void prep_ssg_node( int idx );
-
- // int hitcount;
- // sgdVec3 hit_pts [ MAX_HITS ] ;
-
- // ssgEntity *last_hit;
- FGHitList hit_list;
+ void schedule_needed(const SGBucket& curr_bucket, double rangeM);
SGBucket previous_bucket;
SGBucket current_bucket;
SGBucket pending;
-
- FGTileEntry *current_tile;
-
- // x and y distance of tiles to load/draw
- float vis;
- int xrange, yrange;
-
+ osg::ref_ptr<simgear::SGReaderWriterOptions> _options;
+
// current longitude latitude
double longitude;
double latitude;
- double last_longitude;
- double last_latitude;
+ double scheduled_visibility;
/**
* tile cache
*/
- FGNewCache tile_cache;
+ TileCache tile_cache;
+ simgear::SGTerraSync* _terra_sync;
- /**
- * Queue tiles for loading.
- */
- FGTileLoader loader;
- int counter_hack;
+ // update various queues internal queues
+ void update_queues();
- /**
- * Work queues.
- *
- * attach_queue is the tiles that have been loaded [by the pager]
- * that can be attached to the scene graph by the render thread.
- *
- * model_queue is the set of models that need to be loaded by the
- * primary render thread.
- */
-#ifdef ENABLE_THREADS
- static SGLockedQueue<FGTileEntry *> attach_queue;
- static SGLockedQueue<FGDeferredModel *> model_queue;
-#else
- static queue<FGTileEntry *> attach_queue;
- static queue<FGDeferredModel *> model_queue;
-#endif // ENABLE_THREADS
+ // schedule tiles for the viewer bucket
+ void schedule_tiles_at(const SGGeod& location, double rangeM);
-public:
+ static void refresh_tile(void* tileMgr, long tileIndex);
- /**
- * Add a loaded tile to the 'attach to the scene graph' queue.
- */
- static void ready_to_attach( FGTileEntry *t ) { attach_queue.push( t ); }
-
-#ifdef WISH_PLIB_WAS_THREADED // but it isn't
- /**
- * Tile is detatched from scene graph and is ready to delete
- */
- inline void ready_to_delete( FGTileEntry *t ) { loader.remove( t ); }
-#endif
+ SGPropertyNode_ptr _visibilityMeters;
+ SGPropertyNode_ptr _maxTileRangeM, _disableNasalHooks;
+ SGPropertyNode_ptr _scenery_loaded, _scenery_override;
- /**
- * Add a pending model to the 'deferred model load' queue
- */
- static void model_ready( FGDeferredModel *dm ) { model_queue.push( dm ); }
+ osg::ref_ptr<flightgear::SceneryPager> _pager;
public:
-
- // Constructor
FGTileMgr();
-
- // Destructor
~FGTileMgr();
- // Initialize the Tile Manager subsystem
- int init();
-
- // 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 update( double lon, double lat );
-
- // 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.
- void my_ssg_los( string s, ssgBranch *branch, sgdMat4 m,
- const sgdVec3 p, const sgdVec3 dir, sgdVec3 normal );
-
- void my_ssg_los( ssgBranch *branch, sgdMat4 m,
- const sgdVec3 p, const sgdVec3 dir,
- FGHitList *list );
-
- bool current_elev_ssg( sgdVec3 abs_view_pos, double *terrain_elev );
-
- // Prepare the ssg nodes ... for each tile, set it's proper
- // transform and update it's range selector based on current
- // visibilty
- void prep_ssg_nodes();
-};
+ // Initialize the Tile Manager
+ virtual void init();
+ virtual void reinit();
+ virtual void update(double dt);
+
+ const SGBucket& get_current_bucket () const { return current_bucket; }
+ // Returns true if scenery is available for the given lat, lon position
+ // within a range of range_m.
+ // lat and lon are expected to be in degrees.
+ bool schedule_scenery(const SGGeod& position, double range_m, double duration=0.0);
-// the tile manager
-extern FGTileMgr global_tile_mgr;
+ // Returns true if tiles around current view position have been loaded
+ bool isSceneryLoaded();
+};
#endif // _TILEMGR_HXX
projects / flightgear.git / blobdiff