61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
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// 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/misc/props.hxx>
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#include <Main/fgfs.hxx>
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/**
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* Model a vacuum-powered heading indicator.
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*
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* This first, simple draft is hard-wired to vacuum pump #1.
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*
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* Input properties:
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*
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* /instrumentation/heading-indicator/serviceable
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* /instrumentation/heading-indicator/offset-deg
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* /orientation/heading-deg
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* /systems/vacuum[0]/suction-inhg
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*
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* Output properties:
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*
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* /instrumentation/heading-indicator/indicated-heading-deg
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*/
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class HeadingIndicator : public FGSubsystem
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{
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public:
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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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double _spin;
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double _last_heading_deg;
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SGPropertyNode_ptr _serviceable_node;
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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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