1998-05-20 20:53:53 +00:00
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// tilemgr.hxx -- routines to handle dynamic management of scenery tiles
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//
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// Written by Curtis Olson, started January 1998.
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//
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// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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// (Log is kept at end of this file)
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1998-01-07 23:50:01 +00:00
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1998-04-22 13:21:26 +00:00
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#ifndef _TILEMGR_HXX
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#define _TILEMGR_HXX
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1998-01-22 02:59:23 +00:00
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1998-04-22 13:21:26 +00:00
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#ifndef __cplusplus
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# error This library requires C++
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1998-04-21 17:02:27 +00:00
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#endif
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1998-05-20 20:53:53 +00:00
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// Initialize the Tile Manager subsystem
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1998-02-12 21:58:27 +00:00
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int fgTileMgrInit( void );
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1998-01-07 23:50:01 +00:00
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1998-05-20 20:53:53 +00:00
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// given the current lon/lat, fill in the array of local chunks. If
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// the chunk isn't already in the cache, then read it from disk.
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1998-02-12 21:58:27 +00:00
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int fgTileMgrUpdate( void );
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1998-01-07 23:50:01 +00:00
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1998-08-22 14:49:55 +00:00
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// Determine scenery altitude. Normally this just happens when we
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// render the scene, but we'd also like to be able to do this
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// explicitely. lat & lon are in radians. abs_view_pos in meters.
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// Returns result in meters.
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double fgTileMgrCurElev( double lon, double lat, fgPoint3d *abs_view_pos );
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1998-05-20 20:53:53 +00:00
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// Render the local tiles --- hack, hack, hack
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1998-01-19 18:40:15 +00:00
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void fgTileMgrRender( void );
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1998-01-13 00:23:08 +00:00
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1998-05-20 20:53:53 +00:00
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#endif // _TILEMGR_HXX
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// $Log$
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1998-08-22 14:49:55 +00:00
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// Revision 1.3 1998/08/22 14:49:59 curt
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// Attempting to iron out seg faults and crashes.
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// Did some shuffling to fix a initialization order problem between view
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// position, scenery elevation.
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//
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1998-05-20 20:53:53 +00:00
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// Revision 1.2 1998/05/20 20:53:56 curt
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// Moved global ref point and radius (bounding sphere info, and offset) to
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// data file rather than calculating it on the fly.
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// Fixed polygon winding problem in scenery generation stage rather than
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// compensating for it on the fly.
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// Made a fgTILECACHE class.
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//
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// Revision 1.1 1998/04/22 13:22:49 curt
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// C++ - ifing the code a bit.
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//
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// Revision 1.6 1998/04/21 17:02:45 curt
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// Prepairing for C++ integration.
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//
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// Revision 1.5 1998/02/12 21:59:53 curt
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// Incorporated code changes contributed by Charlie Hotchkiss
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// <chotchkiss@namg.us.anritsu.com>
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//
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// Revision 1.4 1998/01/22 02:59:42 curt
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// Changed #ifdef FILE_H to #ifdef _FILE_H
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//
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// Revision 1.3 1998/01/19 18:40:38 curt
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// Tons of little changes to clean up the code and to remove fatal errors
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// when building with the c++ compiler.
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//
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// Revision 1.2 1998/01/13 00:23:11 curt
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// Initial changes to support loading and management of scenery tiles. Note,
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// there's still a fair amount of work left to be done.
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//
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// Revision 1.1 1998/01/07 23:50:51 curt
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// "area" renamed to "tile"
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