106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
// environment.hxx -- routines to model the natural environment.
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//
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// Written by David Megginson, started February 2002.
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//
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// Copyright (C) 2002 David Megginson - david@megginson.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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#ifndef _ENVIRONMENT_HXX
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#define _ENVIRONMENT_HXX
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#include <simgear/compiler.h>
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#include <GL/gl.h>
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#include <Main/fgfs.hxx>
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#ifdef SG_HAVE_STD_INCLUDES
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# include <cmath>
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#else
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# include <math.h>
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#endif
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/**
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* Model the natural environment.
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*
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* This class models the natural environment at a specific place and
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* time. A separate instance is necessary for each location or time.
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*
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* This class should eventually move to SimGear.
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*/
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class FGEnvironment : public FGSubsystem
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{
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public:
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FGEnvironment();
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virtual ~FGEnvironment();
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virtual void init ();
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virtual void bind ();
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virtual void unbind ();
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virtual void update (int dt);
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inline virtual double get_visibility_m () const { return visibility_m; }
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inline virtual double get_wind_from_heading_deg () const {
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return wind_from_heading_deg;
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}
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inline virtual double get_wind_speed_kt () const { return wind_speed_kt; }
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inline virtual double get_wind_from_north_fps () const {
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return wind_from_north_fps;
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}
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inline virtual double get_wind_from_east_fps () const {
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return wind_from_east_fps;
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}
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inline virtual double get_wind_from_down_fps () const {
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return wind_from_down_fps;
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}
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virtual void set_visibility_m (double v);
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virtual void set_wind_from_heading_deg (double h);
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virtual void set_wind_speed_kt (double s);
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virtual void set_wind_from_north_fps (double n);
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virtual void set_wind_from_east_fps (double e);
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virtual void set_wind_from_down_fps (double d);
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private:
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void _recalc_hdgspd ();
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void _recalc_ne ();
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double visibility_m;
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double wind_from_heading_deg;
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double wind_speed_kt;
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double wind_from_north_fps;
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double wind_from_east_fps;
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double wind_from_down_fps;
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// Do these belong here?
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GLfloat fog_exp_density;
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GLfloat fog_exp2_density;
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};
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// FIXME: move to FGGlobals.
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extern FGEnvironment current_environment;
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#endif // _ENVIRONMENT_HXX
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