101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/**************************************************************************
|
|
* tilecache.h -- routines to handle scenery tile caching
|
|
*
|
|
* Written by Curtis Olson, started January 1998.
|
|
*
|
|
* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* 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.
|
|
*
|
|
* $Id$
|
|
* (Log is kept at end of this file)
|
|
**************************************************************************/
|
|
|
|
|
|
#ifndef _TILECACHE_H
|
|
#define _TILECACHE_H
|
|
|
|
|
|
#ifdef WIN32
|
|
# include <windows.h>
|
|
#endif
|
|
|
|
#include <GL/glut.h>
|
|
#include <XGL/xgl.h>
|
|
|
|
#include <Scenery/bucketutils.h>
|
|
#include <Include/fg_types.h>
|
|
|
|
/* For best results ... i.e. to avoid tile load problems and blank areas
|
|
*
|
|
* FG_TILE_CACHE_SIZE >= FG_LOCAL_X_Y + max(FG_LOCAL_X, FG_LOCAL_Y) + 1 */
|
|
#define FG_TILE_CACHE_SIZE 36
|
|
|
|
|
|
/* Tile cache record */
|
|
struct fgTILE {
|
|
struct fgBUCKET tile_bucket;
|
|
GLint display_list;
|
|
struct fgCartesianPoint local_ref;
|
|
double bounding_radius;
|
|
int used;
|
|
int priority;
|
|
};
|
|
|
|
/* tile cache */
|
|
extern struct fgTILE tile_cache[FG_TILE_CACHE_SIZE];
|
|
|
|
|
|
/* Initialize the tile cache subsystem */
|
|
void fgTileCacheInit( void );
|
|
|
|
/* Search for the specified "bucket" in the cache */
|
|
int fgTileCacheExists( struct fgBUCKET *p );
|
|
|
|
/* Return index of next available slot in tile cache */
|
|
int fgTileCacheNextAvail( void );
|
|
|
|
/* Fill in a tile cache entry with real data for the specified bucket */
|
|
void fgTileCacheEntryFillIn( int index, struct fgBUCKET *p );
|
|
|
|
/* Return info for a tile cache entry */
|
|
void fgTileCacheEntryInfo( int index, GLint *display_list,
|
|
struct fgCartesianPoint *local_ref );
|
|
|
|
|
|
#endif /* _TILECACHE_H */
|
|
|
|
|
|
/* $Log$
|
|
/* Revision 1.5 1998/02/16 13:39:45 curt
|
|
/* Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
|
|
/* tiles to occasionally be missing.
|
|
/*
|
|
* Revision 1.4 1998/01/31 00:43:27 curt
|
|
* Added MetroWorks patches from Carmen Volpe.
|
|
*
|
|
* Revision 1.3 1998/01/29 00:51:40 curt
|
|
* First pass at tile cache, dynamic tile loading and tile unloading now works.
|
|
*
|
|
* Revision 1.2 1998/01/27 00:48:04 curt
|
|
* Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
|
|
* system and commandline/config file processing code.
|
|
*
|
|
* Revision 1.1 1998/01/24 00:03:29 curt
|
|
* Initial revision.
|
|
*
|
|
*/
|
|
|
|
|