src/Instrumentation/attitude_indicator.hxx

   1 // attitude_indicator.hxx - a vacuum-powered attitude indicator.
   2 // Written by David Megginson, started 2002.
   3 //
   4 // This file is in the Public Domain and comes with no warranty.
   5
   6
   7 #ifndef __INSTRUMENTS_ATTITUDE_INDICATOR_HXX
   8 #define __INSTRUMENTS_ATTITUDE_INDICATOR_HXX 1
   9
  10 #ifndef __cplusplus
  11 # error This library requires C++
  12 #endif
  13
  14 #include <simgear/misc/props.hxx>
  15 #include <Main/fgfs.hxx>
  16
  17 #include "gyro.hxx"
  18
  19
  20 /**
  21  * Model a vacuum-powered attitude indicator.
  22  *
  23  * This first, simple draft is hard-wired to vacuum pump #1.
  24  *
  25  * Input properties:
  26  *
  27  * /instrumentation/attitude-indicator/config/tumble-flag
  28  * /instrumentation/attitude-indicator/serviceable
  29  * /orientation/pitch-deg
  30  * /orientation/roll-deg
  31  * /systems/vacuum[0]/suction-inhg
  32  *
  33  * Output properties:
  34  *
  35  * /instrumentation/attitude-indicator/indicated-pitch-deg
  36  * /instrumentation/attitude-indicator/indicated-roll-deg
  37  */
  38 class AttitudeIndicator : public FGSubsystem
  39 {
  40
  41 public:
  42
  43     AttitudeIndicator ();
  44     virtual ~AttitudeIndicator ();
  45
  46     virtual void init ();
  47     virtual void bind ();
  48     virtual void unbind ();
  49     virtual void update (double dt);
  50
  51 private:
  52
  53     Gyro _gyro;
  54
  55     double _tumble;
  56
  57     SGPropertyNode_ptr _tumble_flag_node;
  58     SGPropertyNode_ptr _pitch_in_node;
  59     SGPropertyNode_ptr _roll_in_node;
  60     SGPropertyNode_ptr _suction_node;
  61     SGPropertyNode_ptr _pitch_out_node;
  62     SGPropertyNode_ptr _roll_out_node;
  63
  64 };
  65
  66 #endif // __INSTRUMENTS_ATTITUDE_INDICATOR_HXX