115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
|
/**************************************************************************
|
||
|
|
* tilecache.c -- routines to hancle 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)
|
||
|
|
**************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef WIN32
|
||
|
|
# include <windows.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <GL/glut.h>
|
||
|
|
#include <XGL/xgl.h>
|
||
|
|
|
||
|
|
#include <Scenery/bucketutils.h>
|
||
|
|
#include <Scenery/obj.h>
|
||
|
|
#include <Scenery/tilecache.h>
|
||
|
|
|
||
|
|
#include <Include/general.h>
|
||
|
|
|
||
|
|
/* tile cache */
|
||
|
|
struct fgTILE tile_cache[FG_TILE_CACHE_SIZE];
|
||
|
|
|
||
|
|
|
||
|
|
/* Initialize the tile cache subsystem */
|
||
|
|
void fgTileCacheInit( void ) {
|
||
|
|
int i;
|
||
|
|
|
||
|
|
printf("Initializing the tile cache.\n");
|
||
|
|
|
||
|
|
for ( i = 0; i < FG_TILE_CACHE_SIZE; i++ ) {
|
||
|
|
tile_cache[i].used = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Return index of next available slot in tile cache */
|
||
|
|
int fgTileCacheNextAvail( void ) {
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for ( i = 0; i < FG_TILE_CACHE_SIZE; i++ ) {
|
||
|
|
if ( tile_cache[i].used == 0 ) {
|
||
|
|
return(i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return(-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Fill in a tile cache entry with real data for the specified bucket */
|
||
|
|
void fgTileCacheEntryFillIn( int index, struct fgBUCKET *p ) {
|
||
|
|
struct fgGENERAL *g;
|
||
|
|
char base_path[256];
|
||
|
|
char file_name[256];
|
||
|
|
|
||
|
|
g = &general;
|
||
|
|
|
||
|
|
/* Mark this cache entry as used */
|
||
|
|
tile_cache[index].used = 1;
|
||
|
|
|
||
|
|
/* Update the bucket */
|
||
|
|
tile_cache[index].tile_bucket.lon = p->lon;
|
||
|
|
tile_cache[index].tile_bucket.lat = p->lat;
|
||
|
|
tile_cache[index].tile_bucket.x = p->x;
|
||
|
|
tile_cache[index].tile_bucket.y = p->y;
|
||
|
|
|
||
|
|
/* Load the appropriate area and get the display list pointer */
|
||
|
|
fgBucketGenBasePath(p, base_path);
|
||
|
|
sprintf(file_name, "%s/Scenery/%s/%ld.obj", g->root_dir,
|
||
|
|
base_path, fgBucketGenIndex(p));
|
||
|
|
tile_cache[index].display_list =
|
||
|
|
fgObjLoad(file_name, &tile_cache[index].local_ref);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Return info for a tile cache entry */
|
||
|
|
void fgTileCacheEntryInfo( int index, GLint *display_list,
|
||
|
|
struct fgCartesianPoint *local_ref ) {
|
||
|
|
*display_list = tile_cache[index].display_list;
|
||
|
|
/* printf("Display list = %d\n", *display_list); */
|
||
|
|
|
||
|
|
local_ref->x = tile_cache[index].local_ref.x;
|
||
|
|
local_ref->y = tile_cache[index].local_ref.y;
|
||
|
|
local_ref->z = tile_cache[index].local_ref.z;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* $Log$
|
||
|
|
/* Revision 1.1 1998/01/24 00:03:29 curt
|
||
|
|
/* Initial revision.
|
||
|
|
/*
|
||
|
|
*/
|
||
|
|
|
||
|
|
|