69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// Radar Altimeter
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//
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// Written by Vivian MEAZZA, started Feb 2008.
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//
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//
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// Copyright (C) 2008 Vivain MEAZZA - vivian.meazza@lineone.net
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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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//
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#ifndef _INST_RADALT_HXX
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#define _INST_RADALT_HXX
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#include <simgear/structure/subsystem_mgr.hxx>
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#include <simgear/props/props.hxx>
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#include <simgear/math/SGMath.hxx>
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class RadarAltimeter : public SGSubsystem
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{
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public:
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RadarAltimeter ( SGPropertyNode *node );
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virtual ~RadarAltimeter ();
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private:
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virtual void init ();
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virtual void update (double dt);
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void update_altitude();
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void updateSetHeight();
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double getDistanceAntennaToHit(const SGVec3d& h) const;
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SGVec3d getCartAntennaPos()const;
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SGVec3d rayVector(double az, double el) const;
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SGPropertyNode_ptr _Instrument;
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SGPropertyNode_ptr _user_alt_agl_node;
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SGPropertyNode_ptr _rad_alt_warning_node;
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SGPropertyNode_ptr _serviceable_node;
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SGPropertyNode_ptr _sceneryLoaded;
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SGVec3d _antennaOffset; // in aircraft local XYZ frame
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std::string _name;
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int _num;
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double _time;
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double _interval;
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double _min_radalt;
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};
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#endif // _INST_AGRADAR_HXX
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