//
// 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 <simgear/scene/tgdb/TileEntry.hxx>
+#include <simgear/scene/tgdb/TileCache.hxx>
-#include "hitlist.hxx"
-
-FG_USING_STD(list);
-
+class SGReaderWriterBTGOptions;
-#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 osg
+{
+class Node;
+}
+namespace simgear
+{
+class SGTerraSync;
+}
-// forward declaration
-class FGTileEntry;
-
-
-class FGTileMgr {
+class FGTileMgr : public SGSubsystem, public simgear::ModelLoadHelper {
private:
};
load_state state;
+
+ // 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);
- // pending tile load queue
- list < FGBucket > load_queue;
-
- // initialize the cache
- void initialize_queue();
-
- // 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 FGBucket& b );
+ // schedule a needed buckets for loading
+ void schedule_needed(const SGBucket& curr_bucket, double rangeM);
- // load a tile
- void load_tile( const FGBucket& b );
+ SGBucket previous_bucket;
+ SGBucket current_bucket;
+ SGBucket pending;
+ osg::ref_ptr<SGReaderWriterBTGOptions> _options;
- // schedule a needed buckets for loading
- void FGTileMgr::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;
-
- FGBucket previous_bucket;
- FGBucket current_bucket;
- FGBucket pending;
-
- FGTileEntry *current_tile;
-
// x and y distance of tiles to load/draw
+ float vis;
int xrange, yrange;
-
+
// current longitude latitude
double longitude;
double latitude;
- double last_longitude;
- double last_latitude;
-
+ double scheduled_visibility;
+
+ /**
+ * tile cache
+ */
+ simgear::TileCache tile_cache;
+ simgear::SGTerraSync* _terra_sync;
+
+ // Update the various queues maintained by the tilemagr (private
+ // internal function, do not call directly.)
+ void update_queues();
+
+ SGPropertyNode* _visibilityMeters;
+ SGPropertyChangeListener* _propListener;
+ SGPropertyNode_ptr _randomObjects;
+ SGPropertyNode_ptr _randomVegetation;
+ SGPropertyNode_ptr _maxTileRangeM;
+
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,
- sgVec3 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();
-
- inline int queue_size() const { return load_queue.size(); }
-};
+ // Initialize the Tile Manager
+ virtual void init();
+ virtual void reinit();
+
+ virtual void update(double dt);
+ // update loader configuration options
+ void configChanged();
-// the tile manager
-extern FGTileMgr global_tile_mgr;
+ int schedule_tiles_at(const SGGeod& location, double rangeM);
+
+
+ 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);
+
+ // Load a model for a tile
+ osg::Node* loadTileModel(const std::string& modelPath, bool cacheModel);
+
+ // Returns true if tiles around current view position have been loaded
+ bool isSceneryLoaded();
+};
#endif // _TILEMGR_HXX
projects / flightgear.git / blobdiff