85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
// simulates ridge lift
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//
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// Written by Patrice Poly
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// Copyright (C) 2009 Patrice Poly - p.polypa@gmail.com
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//
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//
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// Entirely based on the paper :
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// http://carrier.csi.cam.ac.uk/forsterlewis/soaring/sim/fsx/dev/sim_probe/sim_probe_paper.html
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// by Ian Forster-Lewis, University of Cambridge, 26th December 2007
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//
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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#ifndef _FG_RidgeLift_HXX
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#define _FG_RidgeLift_HXX
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#ifdef HAVE_CONFIG
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# include <config.h>
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#endif
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#include <string>
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using std::string;
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class FGRidgeLift : public SGSubsystem {
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public:
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FGRidgeLift();
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~FGRidgeLift();
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virtual void bind();
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virtual void unbind();
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virtual void update(double dt);
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virtual void init();
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inline double getStrength() const { return strength; };
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inline double get_probe_elev_m( int index ) const { return probe_elev_m[index]; };
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inline double get_probe_lat_deg( int index ) const { return probe_lat_deg[index]; };
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inline double get_probe_lon_deg( int index ) const { return probe_lon_deg[index]; };
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inline double get_slope( int index ) const { return slope[index]; };
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private:
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static const double dist_probe_m[5];
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double strength;
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double timer;
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double probe_lat_deg[5];
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double probe_lon_deg[5];
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double probe_elev_m[5];
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double slope[4];
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double lift_factor;
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SGPropertyNode_ptr _enabled_node;
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SGPropertyNode_ptr _ridge_lift_fps_node;
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SGPropertyNode_ptr _surface_wind_from_deg_node;
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SGPropertyNode_ptr _surface_wind_speed_node;
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SGPropertyNode_ptr _user_altitude_agl_ft_node;
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SGPropertyNode_ptr _user_longitude_node;
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SGPropertyNode_ptr _user_latitude_node;
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SGPropertyNode_ptr _ground_elev_node;
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};
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#endif // _FG_RidgeLift_HXX
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