1 // environment-ctrl.hxx -- controller for environment information.
3 // Written by David Megginson, started May 2002.
5 // Copyright (C) 2002 David Megginson - david@megginson.com
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #ifndef _ENVIRONMENT_CTRL_HXX
24 #define _ENVIRONMENT_CTRL_HXX
26 #include <simgear/compiler.h>
28 #ifdef SG_HAVE_STD_INCLUDES
36 #include "environment.hxx"
41 * Interface to control environment information for a specific location.
43 class FGEnvironmentCtrl
49 virtual ~FGEnvironmentCtrl ();
51 virtual void setEnvironment (FGEnvironment * environment);
53 virtual FGEnvironment * getEnvironment () const { return _environment; }
55 virtual void setLongitudeDeg (double lon_deg);
56 virtual void setLatitudeDeg (double lat_deg);
57 virtual void setElevationFt (double elev_ft);
58 virtual void setPosition (double lon_deg, double lat_deg, double elev_ft);
60 virtual double getLongitudeDeg () const { return _lon_deg; }
61 virtual double getLatitudeDeg () const { return _lat_deg; }
62 virtual double getElevationFt () const { return _elev_ft; }
64 virtual void init () = 0;
65 virtual void update (double dt) = 0;
69 FGEnvironment * _environment;
79 * Environment controller using user-supplied parameters.
81 class FGUserDefEnvironmentCtrl : public FGEnvironmentCtrl
84 FGUserDefEnvironmentCtrl ();
85 virtual ~FGUserDefEnvironmentCtrl ();
88 virtual void update (double dt);
92 SGPropertyNode * _base_wind_speed_node;
93 SGPropertyNode * _gust_wind_speed_node;
95 double _current_wind_speed_kt;
96 double _delta_wind_speed_kt;
100 #endif // _ENVIRONMENT_CTRL_HXX