//
// 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 <list>
-
-#include <plib/ssg.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/bucket/newbucket.hxx>
+#include "SceneryPager.hxx"
+#include "tileentry.hxx"
+#include "tilecache.hxx"
+namespace osg
+{
+class Node;
+}
-FG_USING_STD(list);
-
-
-#define FG_LOCAL_X_Y 81 // max(o->tile_diameter) ** 2
+namespace simgear
+{
+class SGTerraSync;
+class SGReaderWriterOptions;
+}
-#define FG_SQUARE( X ) ( (X) * (X) )
+class FGTileMgr : public SGSubsystem {
-#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
+private:
+ // Tile loading state
+ enum load_state {
+ Start = 0,
+ Inited = 1,
+ Running = 2
+ };
-class FGLoadRec {
+ load_state state, last_state;
-public:
+ // 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);
- FGBucket b;
- int cache_index;
-};
+ // schedule a needed buckets for loading
+ void schedule_needed(const SGBucket& curr_bucket, double rangeM);
+ SGBucket previous_bucket;
+ SGBucket current_bucket;
+ SGBucket pending;
+ osg::ref_ptr<simgear::SGReaderWriterOptions> _options;
-#define MAX_HITS 100
+ // current longitude latitude
+ double longitude;
+ double latitude;
+ double scheduled_visibility;
+ /**
+ * tile cache
+ */
+ TileCache tile_cache;
+ simgear::SGTerraSync* _terra_sync;
-class FGTileMgr {
+ // update various queues internal queues
+ void update_queues();
-private:
+ // schedule tiles for the viewer bucket
+ void schedule_tiles_at(const SGGeod& location, double rangeM);
- // Tile loading state
- enum load_state {
- Start = 0,
- Inited = 1,
- Running = 2
- };
+ static void refresh_tile(void* tileMgr, long tileIndex);
- load_state state;
+ SGPropertyNode_ptr _visibilityMeters;
+ SGPropertyNode_ptr _maxTileRangeM, _disableNasalHooks;
+ SGPropertyNode_ptr _scenery_loaded, _scenery_override;
- // pending tile load queue
- list < FGLoadRec > load_queue;
+ osg::ref_ptr<flightgear::SceneryPager> _pager;
- // schedule a tile for loading
- int sched_tile( const FGBucket& b );
+public:
+ FGTileMgr();
+ ~FGTileMgr();
- // load a tile
- void load_tile( const FGBucket& b, int cache_index );
+ // Initialize the Tile Manager
+ virtual void init();
+ virtual void reinit();
+ virtual void update(double dt);
- int hitcount;
- sgdVec3 hit_pts [ MAX_HITS ] ;
+ const SGBucket& get_current_bucket () const { return current_bucket; }
-public:
+ // 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);
- // Constructor
- FGTileMgr ( void );
-
- // Destructor
- ~FGTileMgr ( void );
-
- // Initialize the Tile Manager subsystem
- int init( void );
-
- // 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 update( void );
-
- // 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 current_elev( double lon, double lat, const Point3D& abs_view_pos );
- void my_ssg_los( string s, ssgBranch *branch, sgdMat4 m,
- const sgdVec3 p, const sgdVec3 dir );
- double current_elev_ssg( const Point3D& abs_view_pos,
- const Point3D& view_pos );
- double current_elev_new( const FGBucket& p );
-
- // 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( void );
+ // Returns true if tiles around current view position have been loaded
+ bool isSceneryLoaded();
};
-// the tile manager
-extern FGTileMgr global_tile_mgr;
-
-
#endif // _TILEMGR_HXX
-
-
projects / flightgear.git / blobdiff