//
// 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/bucket/newbucket.hxx>
-#ifdef ENABLE_THREADS
-# include <simgear/threads/SGQueue.hxx>
-#endif // ENABLE_THREADS
-
-#include "FGTileLoader.hxx"
-#include "hitlist.hxx"
-#include "newcache.hxx"
+#include <simgear/scene/tgdb/TileEntry.hxx>
+#include <simgear/scene/tgdb/TileCache.hxx>
-#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
+class SGReaderWriterBTGOptions;
+namespace osg
+{
+class Node;
+}
-// forward declaration
-class FGTileEntry;
-class FGDeferredModel;
-
-
-class FGTileMgr {
+class FGTileMgr : public simgear::ModelLoadHelper {
private:
// 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 SGBucket& b );
+ void sched_tile( const SGBucket& b, const bool is_inner_ring );
// 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(double visibility_meters, const SGBucket& curr_bucket);
SGBucket previous_bucket;
SGBucket current_bucket;
SGBucket pending;
-
- FGTileEntry *current_tile;
-
+ osg::ref_ptr<SGReaderWriterBTGOptions> _options;
+
// 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;
/**
* tile cache
*/
- FGNewCache tile_cache;
-
- /**
- * Queue tiles for loading.
- */
- FGTileLoader loader;
- int counter_hack;
-
- /**
- * 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
+ simgear::TileCache tile_cache;
public:
-
- /**
- * 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
-
- /**
- * Add a pending model to the 'deferred model load' queue
- */
- static void model_ready( FGDeferredModel *dm ) { model_queue.push( dm ); }
-
-public:
-
- // Constructor
FGTileMgr();
- // Destructor
~FGTileMgr();
- // Initialize the Tile Manager subsystem
+ // Initialize the Tile Manager
int init();
+ // Update the various queues maintained by the tilemagr (private
+ // internal function, do not call directly.)
+ void update_queues();
+
// 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();
-};
+ int update( double visibility_meters );
+ int update( const SGGeod& location, double visibility_meters);
+ // Prepare the ssg nodes corresponding to each tile. For each
+ // tile, set the ssg transform and update it's range selector
+ // based on current visibilty void prep_ssg_nodes( float
+ // visibility_meters );
+ void prep_ssg_nodes(float visibility_meters );
-// the tile manager
-extern FGTileMgr global_tile_mgr;
+ const SGBucket& get_current_bucket () const { return current_bucket; }
+
+ /// Returns true if scenery is avaliable for the given lat, lon position
+ /// within a range of range_m.
+ /// lat and lon are expected to be in degrees.
+ bool scenery_available(const SGGeod& position, double range_m);
+
+ // Load a model for a tile
+ osg::Node* loadTileModel(const string& modelPath, bool cacheModel);
+
+ // Returns true if all the tiles in the tile cache have been loaded
+ bool isSceneryLoaded();
+};
#endif // _TILEMGR_HXX
projects / flightgear.git / blobdiff