1 // tilecache.hxx -- routines to handle scenery tile caching
3 // Written by Curtis Olson, started January 1998.
5 // Copyright (C) 1998, 1999 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #ifndef _TILECACHE_HXX
25 #define _TILECACHE_HXX
29 # error This library requires C++
46 #include <Bucket/newbucket.hxx>
47 #include <Math/point3d.hxx>
49 #include "tileentry.hxx"
54 // A class to store and manage a pile of tiles
57 // cache storage space
65 // Initialize the tile cache subsystem
68 // Search for the specified "bucket" in the cache
69 int exists( const FGBucket& p );
71 // Return index of next available slot in tile cache
72 int next_avail( void );
74 // Free a tile cache entry
75 void entry_free( int index );
77 // Fill in a tile cache entry with real data for the specified bucket
78 void fill_in( int index, const FGBucket& p );
80 // Return a pointer to the specified tile cache entry
81 FGTileEntry *get_tile( int index ) {
82 return &tile_cache[index];
85 // Return the cache size
86 inline size_t get_size() const { return tile_cache.size(); }
94 extern FGTileCache global_tile_cache;
97 #endif // _TILECACHE_HXX