b9e4775a7a
- finish cleanup/optimization of instrumentation system (started by mfranz) - improve configuration of special properties by addressing them directly
65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
// heading_indicator.hxx - a vacuum-powered heading indicator.
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// Written by David Megginson, started 2002.
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//
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// This file is in the Public Domain and comes with no warranty.
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#ifndef __INSTRUMENTS_HEADING_INDICATOR_HXX
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#define __INSTRUMENTS_HEADING_INDICATOR_HXX 1
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include <simgear/props/props.hxx>
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#include <simgear/structure/subsystem_mgr.hxx>
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#include "gyro.hxx"
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/**
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* Model a vacuum-powered heading indicator.
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*
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* Input properties:
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*
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* /instrumentation/"name"/serviceable
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* /instrumentation/"name"/spin
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* /instrumentation/"name"/offset-deg
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* /orientation/heading-deg
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* "vacuum_system"/suction-inhg
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*
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* Output properties:
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*
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* /instrumentation/"name"/indicated-heading-deg
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*/
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class HeadingIndicator : public SGSubsystem
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{
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public:
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HeadingIndicator ( SGPropertyNode *node );
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HeadingIndicator ();
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virtual ~HeadingIndicator ();
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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 (double dt);
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private:
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Gyro _gyro;
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double _last_heading_deg;
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string _name;
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int _num;
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string _suction;
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SGPropertyNode_ptr _offset_node;
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SGPropertyNode_ptr _heading_in_node;
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SGPropertyNode_ptr _suction_node;
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SGPropertyNode_ptr _heading_out_node;
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};
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#endif // __INSTRUMENTS_HEADING_INDICATOR_HXX
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