X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FScenery%2Ftileentry.hxx;h=54cebe768ead04c2ec6e2d5cdc6429a1a2726343;hb=68c71d5787f2a0309e35c3e05939950113618cb7;hp=612b059e2760f2c43fe65f549bd0d3c8a761d7bb;hpb=39ae3864defa9be90667638efa000bc0ac2fbdfb;p=flightgear.git diff --git a/src/Scenery/tileentry.hxx b/src/Scenery/tileentry.hxx index 612b059e2..54cebe768 100644 --- a/src/Scenery/tileentry.hxx +++ b/src/Scenery/tileentry.hxx @@ -2,7 +2,7 @@ // // Written by Curtis Olson, started May 1998. // -// Copyright (C) 1998, 1999 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 @@ -16,7 +16,7 @@ // // 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. // // $Id$ @@ -25,155 +25,126 @@ #define _TILEENTRY_HXX -#ifndef __cplusplus +#ifndef __cplusplus # error This library requires C++ -#endif - -#ifdef HAVE_CONFIG_H -# include -#endif - -#ifdef HAVE_WINDOWS_H -# include #endif -#include -#include - #include #include -#include STL_STRING - -#include // plib includes +#include #include -#include - -#if defined( sgi ) -#include -#endif - -FG_USING_STD(string); -FG_USING_STD(vector); +#include +#include +#include +#include +#include -typedef vector < Point3D > point_list; -typedef point_list::iterator point_list_iterator; -typedef point_list::const_iterator const_point_list_iterator; - - -// Scenery tile class -class FGTileEntry { - -private: - - // Tile state - enum tile_state { - Unused = 0, - Scheduled_for_use = 1, - Scheduled_for_cache = 2, - Loaded = 3, - Cached = 4 - }; - -public: - - typedef vector < sgVec3 * > free_vec3_list; - typedef vector < sgVec2 * > free_vec2_list; - typedef vector < unsigned short * > free_index_list; +/** + * A class to encapsulate everything we need to know about a scenery tile. + */ +class TileEntry { public: - - // node list - point_list nodes; - int ncount; - - // global tile culling data - Point3D center; - double bounding_radius; - Point3D offset; - // this tile's official location in the world - FGBucket tile_bucket; - - // the tile cache will keep track here if the tile is being used - tile_state state; - - // list of pointers to memory chunks that need to be freed when - // tile entry goes away - free_vec3_list vec3_ptrs; - free_vec2_list vec2_ptrs; - free_index_list index_ptrs; - - // ssg tree structure for this tile is as follows: - // ssgRoot(scene) - // - ssgBranch(terrain) - // - ssgSelector(tile) - // - ssgTransform(tile) - // - ssgRangeSelector(tile) - // - ssgEntity(tile) - // - kid1(fan) - // - kid2(fan) - // ... - // - kidn(fan) - - // selector (turn tile on/off) - ssgSelector *select_ptr; - - // pointer to ssg transform for this tile - ssgTransform *transform_ptr; + SGBucket tile_bucket; + std::string tileFileName; + +private: // pointer to ssg range selector for this tile - ssgRangeSelector *range_ptr; + osg::ref_ptr _node; + // Reference to DatabaseRequest object set and used by the + // osgDB::DatabasePager. + osg::ref_ptr _databaseRequest; + + /** + * 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. + */ + float _priority; + /** Flag indicating if tile belongs to current view. */ + bool _current_view; + /** Time when tile expires. */ + double _time_expired; public: // Constructor - FGTileEntry ( void ); + TileEntry( const SGBucket& b ); + TileEntry( const TileEntry& t ); // Destructor - ~FGTileEntry ( void ); - - // Clean up the memory used by this tile and delete the arrays - // used by ssg as well as the whole ssg branch - void free_tile(); - - // Calculate this tile's offset - void SetOffset( const Point3D& p) + ~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(float vis); + + /** + * 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 { - offset = center - p; + return _node->getNumChildren() > 0; } - // Return this tile's offset - inline Point3D get_offset( void ) const { return offset; } - - inline bool is_unused() const { return state == Unused; } - inline bool is_scheduled_for_use() const { - return state == Scheduled_for_use; - } - inline bool is_scheduled_for_cache() const { - return state == Scheduled_for_cache; + /** + * Return the "bucket" for this tile + */ + inline const SGBucket& get_tile_bucket() const { return tile_bucket; } + + /** + * Add terrain mesh and ground lighting to scene graph. + */ + void addToSceneGraph( osg::Group *terrain_branch); + + /** + * disconnect terrain mesh and ground lighting nodes from scene + * graph for this tile. + */ + void removeFromSceneGraph(); + + /** + * Refresh a tile, reload the node from disk. + */ + void refresh(); + + /** + * return the scenegraph node for the terrain + */ + osg::LOD *getNode() const { return _node.get(); } + + inline double get_time_expired() const { return _time_expired; } + inline void update_time_expired( double time_expired ) { if (_time_expired _time_expired); } + + // Get the ref_ptr to the DatabaseRequest object, in order to pass + // this to the pager. + osg::ref_ptr& getDatabaseRequest() + { + return _databaseRequest; } - inline bool is_loaded() const { return state == Loaded; } - inline bool is_cached() const { return state == Cached; } - - inline void mark_unused() { state = Unused; } - inline void mark_scheduled_for_use() { state = Scheduled_for_use; } - inline void mark_scheduled_for_cache() { state = Scheduled_for_use; } - inline void mark_loaded() { state = Loaded; } - - - // when a tile is still in the cache, but not in the immediate - // draw l ist, it can still remain in the scene graph, but we use - // a range selector to disable it from ever being drawn. - void ssg_disable(); }; - -typedef vector < FGTileEntry > tile_list; -typedef tile_list::iterator tile_list_iterator; -typedef tile_list::const_iterator const_tile_list_iterator; - - #endif // _TILEENTRY_HXX