//
// Written by Curtis Olson, started May 1998.
//
-// Copyright (C) 1998 - 2001 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1998 - 2001 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.
//
// $Id$
#define _TILEENTRY_HXX
-#ifndef __cplusplus
+#ifndef __cplusplus
# error This library requires C++
-#endif
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
#endif
#include <simgear/compiler.h>
#include <vector>
-#include STL_STRING
-
-#include <plib/ssg.h> // plib includes
+#include <string>
#include <simgear/bucket/newbucket.hxx>
-#include <simgear/math/point3d.hxx>
#include <simgear/misc/sg_path.hxx>
-#if defined( sgi )
-#include <strings.h>
-#endif
-
-SG_USING_STD(string);
-SG_USING_STD(vector);
-
-
-typedef vector < Point3D > point_list;
-typedef point_list::iterator point_list_iterator;
-typedef point_list::const_iterator const_point_list_iterator;
-
-class FGTileEntry;
-
-
-/**
- * A class to hold deferred model loading info
- */
-class FGDeferredModel {
-
-private:
-
- string model_path;
- string texture_path;
- FGTileEntry *tile;
- ssgTransform *obj_trans;
-
-public:
-
- inline FGDeferredModel() { }
- inline FGDeferredModel( const string mp, const string tp,
- FGTileEntry *t, ssgTransform *ot )
- {
- model_path = mp;
- texture_path = tp;
- tile = t;
- obj_trans = ot;
- }
- inline ~FGDeferredModel() { }
- inline string get_model_path() const { return model_path; }
- inline string get_texture_path() const { return texture_path; }
- inline FGTileEntry *get_tile() const { return tile; }
- inline ssgTransform *get_obj_trans() const { return obj_trans; }
-};
-
+#include <osg/ref_ptr>
+#include <osgDB/ReaderWriter>
+#include <osg/Group>
+#include <osg/LOD>
/**
* A class to encapsulate everything we need to know about a scenery tile.
*/
-class FGTileEntry {
+class TileEntry {
public:
-
- // global tile culling data
- Point3D center;
- double bounding_radius;
- Point3D offset;
-
// this tile's official location in the world
SGBucket tile_bucket;
+ std::string tileFileName;
private:
- // ssg tree structure for this tile is as follows:
- // ssgRoot(scene)
- // - ssgBranch(terrain)
- // - ssgTransform(tile)
- // - ssgRangeSelector(tile)
- // - ssgEntity(tile)
- // - kid1(fan)
- // - kid2(fan)
- // ...
- // - kidn(fan)
-
- // pointer to ssg transform for this tile
- ssgTransform *terra_transform;
- ssgTransform *vasi_lights_transform;
- ssgTransform *rwy_lights_transform;
- ssgTransform *taxi_lights_transform;
- ssgTransform *gnd_lights_transform;
-
// pointer to ssg range selector for this tile
- ssgRangeSelector *terra_range;
- ssgRangeSelector *gnd_lights_range;
-
- // we create several preset brightness and can choose which one we
- // want based on lighting conditions.
- ssgSelector *gnd_lights_brightness;
-
- // we need to be able to turn runway lights on or off (doing this
- // via a call back would be nifty, but then the call back needs to
- // know about the higher level application's global state which is
- // a problem if we move the code into simgear.)
- ssgSelector *vasi_lights_selector;
- ssgSelector *rwy_lights_selector;
- ssgSelector *taxi_lights_selector;
-
- /**
- * Indicates this tile has been loaded from a file and connected
- * into the scene graph. Note that this may be set asynchronously
- * by another thread.
- */
- volatile bool loaded;
+ osg::ref_ptr<osg::LOD> _node;
+ // Reference to DatabaseRequest object set and used by the
+ // osgDB::DatabasePager.
+ osg::ref_ptr<osg::Referenced> _databaseRequest;
/**
- * Count of pending models to load for this tile. This tile
- * cannot be removed until this number reaches zero (i.e. no
- * pending models to load for this tile.)
+ * This value is used by the tile scheduler/loader to load tiles
+ * in a useful sequence. The priority is set to reflect the tiles
+ * distance from the center, so all tiles are loaded in an innermost
+ * to outermost sequence.
*/
- volatile int pending_models;
-
- bool obj_load( const string& path,
- ssgBranch* geometry,
- ssgBranch* vasi_lights,
- ssgBranch* rwy_lights,
- ssgBranch* taxi_lights,
- ssgVertexArray* gound_lights,
- bool is_base );
-
- ssgLeaf* gen_lights( SGMaterialLib *matlib, ssgVertexArray *lights,
- int inc, float bright );
-
- double timestamp;
-
- /**
- * this value is used by the tile scheduler/loader to mark which
- * tiles are in the primary ring (i.e. the current tile or the
- * surrounding eight.) Other routines then can use this as an
- * optimization and not do some operation to tiles outside of this
- * inner ring. (For instance vasi color updating)
- */
- bool is_inner_ring;
-
- /**
- * this variable tracks the status of the incremental memory
- * freeing.
- */
- enum {
- NODES = 0x01,
- VEC_PTRS = 0x02,
- TERRA_NODE = 0x04,
- GROUND_LIGHTS = 0x08,
- VASI_LIGHTS = 0x10,
- RWY_LIGHTS = 0x20,
- TAXI_LIGHTS = 0x40,
- LIGHTMAPS = 0x80
- };
- int free_tracker;
+ float _priority;
+ /** Flag indicating if tile belongs to current view. */
+ bool _current_view;
+ /** Time when tile expires. */
+ double _time_expired;
public:
// Constructor
- FGTileEntry( const SGBucket& b );
+ TileEntry( const SGBucket& b );
+ TileEntry( const TileEntry& t );
// Destructor
- ~FGTileEntry();
-
- // Clean up the memory used by this tile and delete the arrays
- // used by ssg as well as the whole ssg branch. This does a
- // partial clean up and exits so we can spread the load across
- // multiple frames. Returns false if work remaining to be done,
- // true if dynamically allocated memory used by this tile is
- // completely freed.
- bool free_tile();
-
- // Calculate this tile's offset
- void SetOffset( const Point3D& p)
- {
- offset = center - p;
- }
-
- // Return this tile's offset
- inline Point3D get_offset() const { return offset; }
+ ~TileEntry();
// Update the ssg transform node for this tile so it can be
// properly drawn relative to our (0,0,0) point
- void prep_ssg_node( const Point3D& p, sgVec3 up, float vis);
+ void prep_ssg_node(float vis);
/**
- * Load tile data from a file.
- * @param base name of directory containing tile data file.
- * @param is_base is this a base terrain object for which we should generate
- * random ground light points */
- void load( const string_list &base_path, bool is_base );
-
+ * Transition to OSG database pager
+ */
+ static osg::Node* loadTileByFileName(const std::string& index_str,
+ const osgDB::Options*);
/**
* Return true if the tile entry is loaded, otherwise return false
* indicating that the loading thread is still working on this.
*/
- inline bool is_loaded() const { return loaded; }
-
- /**
- * decrement the pending models count
- */
- inline void dec_pending_models() { pending_models--; }
-
- /**
- * return the number of remaining pending models for this tile
- */
- inline int get_pending_models() const { return pending_models; }
+ inline bool is_loaded() const
+ {
+ return _node->getNumChildren() > 0;
+ }
/**
* Return the "bucket" for this tile
*/
- inline SGBucket get_tile_bucket() const { return tile_bucket; }
+ inline const SGBucket& get_tile_bucket() const { return tile_bucket; }
/**
* Add terrain mesh and ground lighting to scene graph.
*/
- void add_ssg_nodes( ssgBranch *terrain_branch,
- ssgBranch *gnd_lights_branch,
- ssgBranch *vasi_lights_branch,
- ssgBranch *rwy_lights_branch,
- ssgBranch *taxi_lights_branch );
+ void addToSceneGraph( osg::Group *terrain_branch);
/**
* disconnect terrain mesh and ground lighting nodes from scene
* graph for this tile.
*/
- void disconnect_ssg_nodes();
+ void removeFromSceneGraph();
+
+ /**
+ * Refresh a tile, reload the node from disk.
+ */
+ void refresh();
-
/**
- * return the SSG Transform node for the terrain
+ * return the scenegraph node for the terrain
*/
- inline ssgTransform *get_terra_transform() { return terra_transform; }
+ osg::LOD *getNode() const { return _node.get(); }
- inline double get_timestamp() const { return timestamp; }
- inline void set_timestamp( double time_ms ) { timestamp = time_ms; }
+ inline double get_time_expired() const { return _time_expired; }
+ inline void update_time_expired( double time_expired ) { if (_time_expired<time_expired) _time_expired = time_expired; }
- inline bool get_inner_ring() const { return is_inner_ring; }
- inline void set_inner_ring( bool val ) { is_inner_ring = val; }
-};
+ inline void set_priority(float priority) { _priority=priority; }
+ inline float get_priority() const { return _priority; }
+ inline void set_current_view(bool current_view) { _current_view = current_view; }
+ inline bool is_current_view() const { return _current_view; }
+
+ /**
+ * Return true if the tile entry is still needed, otherwise return false
+ * indicating that the tile is no longer in active use.
+ */
+ inline bool is_expired(double current_time) const { return (_current_view) ? false : (current_time > _time_expired); }
+ // Get the ref_ptr to the DatabaseRequest object, in order to pass
+ // this to the pager.
+ osg::ref_ptr<osg::Referenced>& getDatabaseRequest()
+ {
+ return _databaseRequest;
+ }
+};
#endif // _TILEENTRY_HXX
projects / flightgear.git / blobdiff