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flightgear/src/Scenery/tilemgr.hxx

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C++
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Moved global ref point and radius (bounding sphere info, and offset) to data file rather than calculating it on the fly. Fixed polygon winding problem in scenery generation stage rather than compensating for it on the fly. Made a fgTILECACHE class.
1998-05-20 20:53:53 +00:00
// tilemgr.hxx -- routines to handle dynamic management of scenery tiles
//
// 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.
//
// $Id$
"area" renamed to "tile"
1998-01-07 23:50:01 +00:00
C++ - ifing the code a bit.
1998-04-22 13:21:26 +00:00
#ifndef _TILEMGR_HXX
#define _TILEMGR_HXX
Changed #ifdef FILE_H to #ifdef _FILE_H
1998-01-22 02:59:23 +00:00
C++ - ifing the code a bit.
1998-04-22 13:21:26 +00:00
#ifndef __cplusplus
# error This library requires C++
Prepairing for C++ integration.
1998-04-21 17:02:27 +00:00
#endif
Code reorganization.
2000-02-15 03:30:01 +00:00
#include <simgear/compiler.h>
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
#include <list>
Prepairing for C++ integration.
1998-04-21 17:02:27 +00:00
Forgot to include ssg.h
2000-03-01 00:31:56 +00:00
#include <plib/ssg.h>
One more pass at a reorg.
2000-02-16 23:01:03 +00:00
#include <simgear/bucket/newbucket.hxx>
Converted fgFLIGHT to a class. Tweaks for Sun Portability. Tweaked current terrain elevation code as per NHV.
1998-12-03 01:18:16 +00:00
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
FG_USING_STD(list);
#define FG_LOCAL_X_Y 81 // max(o->tile_diameter) ** 2
#define FG_SQUARE( X ) ( (X) * (X) )
#if defined(USE_MEM) || defined(WIN32)
# define FG_MEM_COPY(to,from,n) memcpy(to, from, n)
#else
# define FG_MEM_COPY(to,from,n) bcopy(from, to, n)
#endif
class FGLoadRec {
public:
FGBucket b;
(Hopefully) fixed bug which caused corrupt entries to be loaded into the scene graph when a tile shift occured while the tile load queue was not empty.
1999-07-04 07:37:30 +00:00
int cache_index;
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
};
Began work on adding support for loading additional 3d models per tile. Began work on my own ssgLOS() (line of sight) routine.
1999-11-03 21:01:59 +00:00
#define MAX_HITS 100
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
class FGTileMgr {
private:
// Tile loading state
enum load_state {
Start = 0,
Inited = 1,
Running = 2
};
load_state state;
// pending tile load queue
list < FGLoadRec > load_queue;
// schedule a tile for loading
(Hopefully) fixed bug which caused corrupt entries to be loaded into the scene graph when a tile shift occured while the tile load queue was not empty.
1999-07-04 07:37:30 +00:00
int sched_tile( const FGBucket& b );
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
// load a tile
void load_tile( const FGBucket& b, int cache_index );
Began work on adding support for loading additional 3d models per tile. Began work on my own ssgLOS() (line of sight) routine.
1999-11-03 21:01:59 +00:00
int hitcount;
Tweaks to ssg LOS routines and the use of it for height above ground calculations.
1999-11-04 22:55:00 +00:00
sgdVec3 hit_pts [ MAX_HITS ] ;
Began work on adding support for loading additional 3d models per tile. Began work on my own ssgLOS() (line of sight) routine.
1999-11-03 21:01:59 +00:00
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
public:
// Constructor
FGTileMgr ( void );
// Destructor
~FGTileMgr ( void );
"area" renamed to "tile"
1998-01-07 23:50:01 +00:00
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
// Initialize the Tile Manager subsystem
int init( void );
"area" renamed to "tile"
1998-01-07 23:50:01 +00:00
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
// given the current lon/lat, fill in the array of local chunks.
// If the chunk isn't already in the cache, then read it from
// disk.
int update( void );
"area" renamed to "tile"
1998-01-07 23:50:01 +00:00
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
// Determine scenery altitude. Normally this just happens when we
// render the scene, but we'd also like to be able to do this
// explicitely. lat & lon are in radians. abs_view_pos in
// meters. Returns result in meters.
double current_elev( double lon, double lat, const Point3D& abs_view_pos );
Tweaks to ssg LOS routines and the use of it for height above ground calculations.
1999-11-04 22:55:00 +00:00
void my_ssg_los( string s, ssgBranch *branch, sgdMat4 m,
const sgdVec3 p, const sgdVec3 dir );
(Hopefully) fixed bug which caused corrupt entries to be loaded into the scene graph when a tile shift occured while the tile load queue was not empty.
1999-07-04 07:37:30 +00:00
double current_elev_ssg( const Point3D& abs_view_pos,
const Point3D& view_pos );
double current_elev_new( const FGBucket& p );
"area" renamed to "tile"
1998-01-07 23:50:01 +00:00
Ssg tweaks. Better handling of missing tiles. Added a range selector so we can completely ignore tiles that are beyond our visibility range. Added a routine to prep the ssg nodes before rendering by updating the transform and range selector values.
1999-06-30 00:28:20 +00:00
// Prepare the ssg nodes ... for each tile, set it's proper
// transform and update it's range selector based on current
// visibilty
void prep_ssg_nodes( void );
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
};
Attempting to iron out seg faults and crashes. Did some shuffling to fix a initialization order problem between view position, scenery elevation.
1998-08-22 14:49:55 +00:00
Created an FGTileMgr class to encapsulate the high level tile management tasks. Created a tile load queue. When we init, or cross a tile boundary, we stuff the new tiles to be loaded on a load queue, and then only load one tile per frame. This will need further refinement, but it is better than what we had.
1999-06-13 05:58:02 +00:00
// the tile manager
extern FGTileMgr global_tile_mgr;
Initial changes to support loading and management of scenery tiles. Note, there's still a fair amount of work left to be done.
1998-01-13 00:23:08 +00:00
Moved global ref point and radius (bounding sphere info, and offset) to data file rather than calculating it on the fly. Fixed polygon winding problem in scenery generation stage rather than compensating for it on the fly. Made a fgTILECACHE class.
1998-05-20 20:53:53 +00:00
#endif // _TILEMGR_HXX
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